423963 Error in child thread when CLONE_PIDFD is used
429375 PPC ISA 3.1 support is missing, part 9
431157 PPC_FEATURE2_SCV needs to be masked in AT_HWCAP2
+431306 Update demangler to support Rust v0 name mangling
433801 PPC ISA 3.1 support is missing, part 10 (ISA 3.1 support complete)
433863 s390x: memcheck/tests/s390x/{cds,cs,csg} failures
434840 PPC64 darn instruction not supported
#---------------------------------------------------------------------
# You need to modify these revision numbers for your update.
-old_gcc_revision=r240068 # the revision of the previous update
-new_gcc_revision=r246502 # the revision for this update
+old_gcc_revision=7a312bbd41e190379d80b47e308a32c8bc4575c3 # the revision of the previous update
+new_gcc_revision=01d92cfd79872e4cffc78bf233bb9b767336beb8 # the revision for this update
# Unless the organization of demangler related files has changed, no
# changes below this line should be necessary.
echo "Updating the demangler in $DIR"
-# 1) Check out files from old GCC revision
-echo "Checking out GCC files @ $old_gcc_revision"
-
-mkdir gcc-$old_gcc_revision
-cd gcc-$old_gcc_revision
-svn co -$old_gcc_revision svn://gcc.gnu.org/svn/gcc/trunk/libiberty libiberty > /dev/null
-svn co -$old_gcc_revision svn://gcc.gnu.org/svn/gcc/trunk/include include > /dev/null
-rm -rf libiberty/.svn
-rm -rf include/.svn
+# 1) Make a shallow clone of the GCC repo containing only the 2 commits we need
+mkdir gcc
+cd gcc
+git init
+git remote add origin git://gcc.gnu.org/git/gcc.git
+git config core.sparsecheckout true
+echo "libiberty/*" > .git/info/sparse-checkout
+echo "include/*" >> .git/info/sparse-checkout
+git fetch --depth 1 origin $old_gcc_revision $new_gcc_revision
+git checkout $old_gcc_revision
cd ..
-# 2) Assemble the ones we need in $DIR/$old_gcc_revision
+# 2) Check out files from old GCC revision
+echo "Checking out GCC files @ $old_gcc_revision"
+
+# 3) Assemble the ones we need in $DIR/$old_gcc_revision
mkdir $old_gcc_revision
cd $old_gcc_revision
-cp ../gcc-$old_gcc_revision/include/ansidecl.h .
-cp ../gcc-$old_gcc_revision/include/demangle.h .
-cp ../gcc-$old_gcc_revision/include/dyn-string.h .
-cp ../gcc-$old_gcc_revision/include/safe-ctype.h .
-cp ../gcc-$old_gcc_revision/libiberty/cp-demangle.c .
-cp ../gcc-$old_gcc_revision/libiberty/cp-demangle.h .
-cp ../gcc-$old_gcc_revision/libiberty/cplus-dem.c .
-cp ../gcc-$old_gcc_revision/libiberty/dyn-string.c .
-cp ../gcc-$old_gcc_revision/libiberty/d-demangle.c .
-cp ../gcc-$old_gcc_revision/libiberty/rust-demangle.c .
-cp ../gcc-$old_gcc_revision/libiberty/safe-ctype.c .
+cp ../gcc/include/ansidecl.h .
+cp ../gcc/include/demangle.h .
+cp ../gcc/include/dyn-string.h .
+cp ../gcc/include/safe-ctype.h .
+cp ../gcc/libiberty/cp-demangle.c .
+cp ../gcc/libiberty/cp-demangle.h .
+cp ../gcc/libiberty/cplus-dem.c .
+cp ../gcc/libiberty/dyn-string.c .
+cp ../gcc/libiberty/d-demangle.c .
+cp ../gcc/libiberty/rust-demangle.c .
+cp ../gcc/libiberty/safe-ctype.c .
cd ..
-# 3) Check out files from new GCC revision
-
+# 4) Check out files from new GCC revision
echo "Checking out GCC files @ $new_gcc_revision"
-mkdir gcc-$new_gcc_revision
-cd gcc-$new_gcc_revision
-svn co -$new_gcc_revision svn://gcc.gnu.org/svn/gcc/trunk/libiberty libiberty > /dev/null
-svn co -$new_gcc_revision svn://gcc.gnu.org/svn/gcc/trunk/include include > /dev/null
-rm -rf libiberty/.svn
-rm -rf include/.svn
+cd gcc
+git checkout $new_gcc_revision
cd ..
-# 4) Assemble the ones we need in $DIR/$new_gcc_revision
-
+# 5) Assemble the ones we need in $DIR/$new_gcc_revision
mkdir $new_gcc_revision
cd $new_gcc_revision
-cp ../gcc-$new_gcc_revision/include/ansidecl.h .
-cp ../gcc-$new_gcc_revision/include/demangle.h .
-cp ../gcc-$new_gcc_revision/include/dyn-string.h .
-cp ../gcc-$new_gcc_revision/include/safe-ctype.h .
-cp ../gcc-$new_gcc_revision/libiberty/cp-demangle.c .
-cp ../gcc-$new_gcc_revision/libiberty/cp-demangle.h .
-cp ../gcc-$new_gcc_revision/libiberty/cplus-dem.c .
-cp ../gcc-$new_gcc_revision/libiberty/dyn-string.c .
-cp ../gcc-$new_gcc_revision/libiberty/d-demangle.c .
-cp ../gcc-$new_gcc_revision/libiberty/rust-demangle.c .
-cp ../gcc-$new_gcc_revision/libiberty/safe-ctype.c .
+cp ../gcc/include/ansidecl.h .
+cp ../gcc/include/demangle.h .
+cp ../gcc/include/dyn-string.h .
+cp ../gcc/include/safe-ctype.h .
+cp ../gcc/libiberty/cp-demangle.c .
+cp ../gcc/libiberty/cp-demangle.h .
+cp ../gcc/libiberty/cplus-dem.c .
+cp ../gcc/libiberty/dyn-string.c .
+cp ../gcc/libiberty/d-demangle.c .
+cp ../gcc/libiberty/rust-demangle.c .
+cp ../gcc/libiberty/safe-ctype.c .
cd ..
-# 5) Sparse check out valgrind coregrind/m_demangle into old_m_demangle
+# 6) Sparse check out valgrind coregrind/m_demangle into old_m_demangle
echo "Checking out coregrind/m_demangle"
mkdir valgrind-sparse-clone
cd valgrind-sparse-clone
mv valgrind-sparse-clone/coregrind/m_demangle old_m_demangle
rm -rf valgrind-sparse-clone
-# 6) Create new_m_demangle
+# 7) Create new_m_demangle
cp -rp old_m_demangle new_m_demangle
cp -rp $new_gcc_revision/*.[ch] new_m_demangle
-# 7) Compare files from previous GCC revision against old_m_demangle
+# 8) Compare files from previous GCC revision against old_m_demangle
# (This gets us the changes we made to the demangler).
echo "Creating patch"
set +e
diff -r -u $old_gcc_revision old_m_demangle > our-changes
echo "Patch file 'our-changes' created"
-# 7) See how the patch would apply
+# 9) See how the patch would apply
echo "Attempting to apply the patch (but not actualy doing it)."
cd new_m_demangle
patch --dry -p1 < ../our-changes
/* ANSI and traditional C compatibility macros
- Copyright (C) 1991-2017 Free Software Foundation, Inc.
+ Copyright (C) 1991-2021 Free Software Foundation, Inc.
This file is part of the GNU C Library.
This program is free software; you can redistribute it and/or modify
# endif /* GNUC >= 3.0 */
#endif /* ATTRIBUTE_ALIGNED_ALIGNOF */
-/* Useful for structures whose layout must much some binary specification
+/* Useful for structures whose layout must match some binary specification
regardless of the alignment and padding qualities of the compiler. */
#ifndef ATTRIBUTE_PACKED
# define ATTRIBUTE_PACKED __attribute__ ((packed))
# endif /* GNUC >= 4.9 */
#endif /* ATTRIBUTE_NO_SANITIZE_UNDEFINED */
+/* Attribute 'nonstring' was valid as of gcc 8. */
+#ifndef ATTRIBUTE_NONSTRING
+# if GCC_VERSION >= 8000
+# define ATTRIBUTE_NONSTRING __attribute__ ((__nonstring__))
+# else
+# define ATTRIBUTE_NONSTRING
+# endif
+#endif
+
+/* Attribute `alloc_size' was valid as of gcc 4.3. */
+#ifndef ATTRIBUTE_RESULT_SIZE_1
+# if (GCC_VERSION >= 4003)
+# define ATTRIBUTE_RESULT_SIZE_1 __attribute__ ((alloc_size (1)))
+# else
+# define ATTRIBUTE_RESULT_SIZE_1
+#endif
+#endif
+
+#ifndef ATTRIBUTE_RESULT_SIZE_2
+# if (GCC_VERSION >= 4003)
+# define ATTRIBUTE_RESULT_SIZE_2 __attribute__ ((alloc_size (2)))
+# else
+# define ATTRIBUTE_RESULT_SIZE_2
+#endif
+#endif
+
+#ifndef ATTRIBUTE_RESULT_SIZE_1_2
+# if (GCC_VERSION >= 4003)
+# define ATTRIBUTE_RESULT_SIZE_1_2 __attribute__ ((alloc_size (1, 2)))
+# else
+# define ATTRIBUTE_RESULT_SIZE_1_2
+#endif
+#endif
+
+/* Attribute `warn_unused_result' was valid as of gcc 3.3. */
+#ifndef ATTRIBUTE_WARN_UNUSED_RESULT
+# if GCC_VERSION >= 3003
+# define ATTRIBUTE_WARN_UNUSED_RESULT __attribute__ ((warn_unused_result))
+# else
+# define ATTRIBUTE_WARN_UNUSED_RESULT
+# endif
+#endif
+
/* We use __extension__ in some places to suppress -pedantic warnings
about GCC extensions. This feature didn't work properly before
gcc 2.8. */
#define ENUM_BITFIELD(TYPE) unsigned int
#endif
+#if __cpp_constexpr >= 200704
+#define CONSTEXPR constexpr
+#else
+#define CONSTEXPR
+#endif
+
/* C++11 adds the ability to add "override" after an implementation of a
virtual function in a subclass, to:
(A) document that this is an override of a virtual function
For gcc, use "-std=c++11" to enable C++11 support; gcc 6 onwards enables
this by default (actually GNU++14). */
-#if __cplusplus >= 201103
-/* C++11 claims to be available: use it. final/override were only
- implemented in 4.7, though. */
-# if GCC_VERSION < 4007
+#if defined __cplusplus
+# if __cplusplus >= 201103
+ /* C++11 claims to be available: use it. Final/override were only
+ implemented in 4.7, though. */
+# if GCC_VERSION < 4007
+# define OVERRIDE
+# define FINAL
+# else
+# define OVERRIDE override
+# define FINAL final
+# endif
+# elif GCC_VERSION >= 4007
+ /* G++ 4.7 supports __final in C++98. */
# define OVERRIDE
-# define FINAL
+# define FINAL __final
# else
-# define OVERRIDE override
-# define FINAL final
+ /* No C++11 support; leave the macros empty. */
+# define OVERRIDE
+# define FINAL
# endif
-#elif GCC_VERSION >= 4007
-/* G++ 4.7 supports __final in C++98. */
-# define OVERRIDE
-# define FINAL __final
#else
-/* No C++11 support; leave the macros empty: */
+ /* No C++11 support; leave the macros empty. */
# define OVERRIDE
# define FINAL
#endif
+/* A macro to disable the copy constructor and assignment operator.
+ When building with C++11 and above, the methods are explicitly
+ deleted, causing a compile-time error if something tries to copy.
+ For C++03, this just declares the methods, causing a link-time
+ error if the methods end up called (assuming you don't
+ define them). For C++03, for best results, place the macro
+ under the private: access specifier, like this,
+
+ class name_lookup
+ {
+ private:
+ DISABLE_COPY_AND_ASSIGN (name_lookup);
+ };
+
+ so that most attempts at copy are caught at compile-time. */
+
+#if __cplusplus >= 201103
+#define DISABLE_COPY_AND_ASSIGN(TYPE) \
+ TYPE (const TYPE&) = delete; \
+ void operator= (const TYPE &) = delete
+ #else
+#define DISABLE_COPY_AND_ASSIGN(TYPE) \
+ TYPE (const TYPE&); \
+ void operator= (const TYPE &)
+#endif /* __cplusplus >= 201103 */
+
#ifdef __cplusplus
}
#endif
/* Demangler for g++ V3 ABI.
- Copyright (C) 2003-2017 Free Software Foundation, Inc.
+ Copyright (C) 2003-2021 Free Software Foundation, Inc.
Written by Ian Lance Taylor <ian@wasabisystems.com>.
This file is part of the libiberty library, which is part of GCC.
/* This code implements a demangler for the g++ V3 ABI. The ABI is
described on this web page:
- http://www.codesourcery.com/cxx-abi/abi.html#mangling
+ https://itanium-cxx-abi.github.io/cxx-abi/abi.html#mangling
This code was written while looking at the demangler written by
Alex Samuel <samuel@codesourcery.com>.
#else
#ifdef __STDC__
#ifdef __STDC_VERSION__
-#if __STDC_VERSION__ >= 199901L
+#if __STDC_VERSION__ >= 199901L && !__STDC_NO_VLA__
#define CP_DYNAMIC_ARRAYS
-#endif /* __STDC__VERSION >= 199901L */
+#endif /* __STDC_VERSION__ >= 199901L && !__STDC_NO_VLA__ */
#endif /* defined (__STDC_VERSION__) */
#endif /* defined (__STDC__) */
#endif /* ! defined (__GNUC__) */
const char *n;
int next_comp;
int next_sub;
- int did_subs;
int expansion;
};
+/* Maximum number of times d_print_comp may be called recursively. */
+#define MAX_RECURSION_COUNT 1024
+
enum { D_PRINT_BUFFER_LENGTH = 256 };
struct d_print_info
{
struct d_print_mod *modifiers;
/* Set to 1 if we saw a demangling error. */
int demangle_failure;
+ /* Number of times d_print_comp was recursively called. Should not
+ be bigger than MAX_RECURSION_COUNT. */
+ int recursion;
/* Non-zero if we're printing a lambda argument. A template
parameter reference actually means 'auto'. */
int is_lambda_arg;
static struct demangle_component *d_nested_name (struct d_info *);
-static struct demangle_component *d_prefix (struct d_info *);
+static struct demangle_component *d_prefix (struct d_info *, int);
static struct demangle_component *d_unqualified_name (struct d_info *);
static void
d_print_init (struct d_print_info *, demangle_callbackref, void *,
- const struct demangle_component *);
+ struct demangle_component *);
static inline void d_print_error (struct d_print_info *);
demangle_callbackref, void *);
static char *d_demangle (const char *, int, size_t *);
-/* True iff TYPE is a demangling component representing a
- function-type-qualifier. */
-
-static int
-is_fnqual_component_type (enum demangle_component_type type)
-{
- return (type == DEMANGLE_COMPONENT_RESTRICT_THIS
- || type == DEMANGLE_COMPONENT_VOLATILE_THIS
- || type == DEMANGLE_COMPONENT_CONST_THIS
- || type == DEMANGLE_COMPONENT_RVALUE_REFERENCE_THIS
- || type == DEMANGLE_COMPONENT_TRANSACTION_SAFE
- || type == DEMANGLE_COMPONENT_NOEXCEPT
- || type == DEMANGLE_COMPONENT_THROW_SPEC
- || type == DEMANGLE_COMPONENT_REFERENCE_THIS);
-}
-
#define FNQUAL_COMPONENT_CASE \
case DEMANGLE_COMPONENT_RESTRICT_THIS: \
case DEMANGLE_COMPONENT_VOLATILE_THIS: \
case DEMANGLE_COMPONENT_NOEXCEPT: \
case DEMANGLE_COMPONENT_THROW_SPEC
+/* True iff TYPE is a demangling component representing a
+ function-type-qualifier. */
+
+static int
+is_fnqual_component_type (enum demangle_component_type type)
+{
+ switch (type)
+ {
+ FNQUAL_COMPONENT_CASE:
+ return 1;
+ default:
+ break;
+ }
+ return 0;
+}
+
+
#ifdef CP_DEMANGLE_DEBUG
static void
case DEMANGLE_COMPONENT_TEMPLATE_PARAM:
printf ("template parameter %ld\n", dc->u.s_number.number);
return;
+ case DEMANGLE_COMPONENT_TPARM_OBJ:
+ printf ("template parameter object\n");
+ break;
case DEMANGLE_COMPONENT_FUNCTION_PARAM:
printf ("function parameter %ld\n", dc->u.s_number.number);
return;
int
cplus_demangle_fill_name (struct demangle_component *p, const char *s, int len)
{
- if (p == NULL || s == NULL || len == 0)
+ if (p == NULL || s == NULL || len <= 0)
return 0;
p->d_printing = 0;
+ p->d_counting = 0;
p->type = DEMANGLE_COMPONENT_NAME;
p->u.s_name.s = s;
p->u.s_name.len = len;
if (p == NULL || args < 0 || name == NULL)
return 0;
p->d_printing = 0;
+ p->d_counting = 0;
p->type = DEMANGLE_COMPONENT_EXTENDED_OPERATOR;
p->u.s_extended_operator.args = args;
p->u.s_extended_operator.name = name;
|| (int) kind > gnu_v3_object_ctor_group)
return 0;
p->d_printing = 0;
+ p->d_counting = 0;
p->type = DEMANGLE_COMPONENT_CTOR;
p->u.s_ctor.kind = kind;
p->u.s_ctor.name = name;
|| (int) kind > gnu_v3_object_dtor_group)
return 0;
p->d_printing = 0;
+ p->d_counting = 0;
p->type = DEMANGLE_COMPONENT_DTOR;
p->u.s_dtor.kind = kind;
p->u.s_dtor.name = name;
return NULL;
p = &di->comps[di->next_comp];
p->d_printing = 0;
+ p->d_counting = 0;
++di->next_comp;
return p;
}
case DEMANGLE_COMPONENT_GLOBAL_DESTRUCTORS:
case DEMANGLE_COMPONENT_NULLARY:
case DEMANGLE_COMPONENT_TRINARY_ARG2:
+ case DEMANGLE_COMPONENT_TPARM_OBJ:
if (left == NULL)
return NULL;
break;
{
default:
return 0;
+ case DEMANGLE_COMPONENT_LOCAL_NAME:
+ return has_return_type (d_right (dc));
case DEMANGLE_COMPONENT_TEMPLATE:
return ! is_ctor_dtor_or_conversion (d_left (dc));
FNQUAL_COMPONENT_CASE:
d_encoding (struct d_info *di, int top_level)
{
char peek = d_peek_char (di);
+ struct demangle_component *dc;
if (peek == 'G' || peek == 'T')
- return d_special_name (di);
+ dc = d_special_name (di);
else
{
- struct demangle_component *dc;
-
dc = d_name (di);
- if (dc != NULL && top_level && (di->options & DMGL_PARAMS) == 0)
+ if (!dc)
+ /* Failed already. */;
+ else if (top_level && (di->options & DMGL_PARAMS) == 0)
{
/* Strip off any initial CV-qualifiers, as they really apply
to the `this' parameter, and they were not output by the
v2 demangler without DMGL_PARAMS. */
- while (dc->type == DEMANGLE_COMPONENT_RESTRICT_THIS
- || dc->type == DEMANGLE_COMPONENT_VOLATILE_THIS
- || dc->type == DEMANGLE_COMPONENT_CONST_THIS
- || dc->type == DEMANGLE_COMPONENT_REFERENCE_THIS
- || dc->type == DEMANGLE_COMPONENT_RVALUE_REFERENCE_THIS)
+ while (is_fnqual_component_type (dc->type))
dc = d_left (dc);
/* If the top level is a DEMANGLE_COMPONENT_LOCAL_NAME, then
which is local to a function. */
if (dc->type == DEMANGLE_COMPONENT_LOCAL_NAME)
{
- struct demangle_component *dcr;
+ while (d_right (dc) != NULL
+ && is_fnqual_component_type (d_right (dc)->type))
+ d_right (dc) = d_left (d_right (dc));
- dcr = d_right (dc);
- while (is_fnqual_component_type (dcr->type))
- dcr = d_left (dcr);
- dc->u.s_binary.right = dcr;
+ if (d_right (dc) == NULL)
+ dc = NULL;
}
-
- return dc;
}
+ else
+ {
+ peek = d_peek_char (di);
+ if (peek != '\0' && peek != 'E')
+ {
+ struct demangle_component *ftype;
- peek = d_peek_char (di);
- if (dc == NULL || peek == '\0' || peek == 'E')
- return dc;
- return d_make_comp (di, DEMANGLE_COMPONENT_TYPED_NAME, dc,
- d_bare_function_type (di, has_return_type (dc)));
+ ftype = d_bare_function_type (di, has_return_type (dc));
+ if (ftype)
+ {
+ /* If this is a non-top-level local-name, clear the
+ return type, so it doesn't confuse the user by
+ being confused with the return type of whaever
+ this is nested within. */
+ if (!top_level && dc->type == DEMANGLE_COMPONENT_LOCAL_NAME
+ && ftype->type == DEMANGLE_COMPONENT_FUNCTION_TYPE)
+ d_left (ftype) = NULL;
+
+ dc = d_make_comp (di, DEMANGLE_COMPONENT_TYPED_NAME,
+ dc, ftype);
+ }
+ else
+ dc = NULL;
+ }
+ }
}
+
+ return dc;
}
/* <tagged-name> ::= <name> B <source-name> */
once we have something to attach it to. */
rqual = d_ref_qualifier (di, NULL);
- *pret = d_prefix (di);
+ *pret = d_prefix (di, 1);
if (*pret == NULL)
return NULL;
<template-prefix> ::= <prefix> <(template) unqualified-name>
::= <template-param>
::= <substitution>
-*/
+
+ SUBST is true if we should add substitutions (as normal), false
+ if not (in an unresolved-name). */
static struct demangle_component *
-d_prefix (struct d_info *di)
+d_prefix (struct d_info *di, int subst)
{
struct demangle_component *ret = NULL;
else
ret = d_make_comp (di, comb_type, ret, dc);
- if (peek != 'S' && d_peek_char (di) != 'E')
+ if (peek != 'S' && d_peek_char (di) != 'E' && subst)
{
if (! d_add_substitution (di, ret))
return NULL;
ret = d_source_name (di);
else if (IS_LOWER (peek))
{
+ int was_expr = di->is_expression;
if (peek == 'o' && d_peek_next_char (di) == 'n')
- d_advance (di, 2);
+ {
+ d_advance (di, 2);
+ /* Treat cv as naming a conversion operator. */
+ di->is_expression = 0;
+ }
ret = d_operator_name (di);
+ di->is_expression = was_expr;
if (ret != NULL && ret->type == DEMANGLE_COMPONENT_OPERATOR)
{
di->expansion += sizeof "operator" + ret->u.s_operator.op->len - 2;
ret = - ret;
return ret;
}
- ret = ret * 10 + peek - '0';
+ if (ret > ((INT_MAX - (peek - '0')) / 10))
+ return -1;
+ ret = ret * 10 + (peek - '0');
d_advance (di, 1);
peek = d_peek_char (di);
}
{ "ad", NL ("&"), 1 },
{ "an", NL ("&"), 2 },
{ "at", NL ("alignof "), 1 },
+ { "aw", NL ("co_await "), 1 },
{ "az", NL ("alignof "), 1 },
{ "cc", NL ("const_cast"), 2 },
{ "cl", NL ("()"), 2 },
{ "cm", NL (","), 2 },
{ "co", NL ("~"), 1 },
{ "dV", NL ("/="), 2 },
+ { "dX", NL ("[...]="), 3 }, /* [expr...expr] = expr */
{ "da", NL ("delete[] "), 1 },
{ "dc", NL ("dynamic_cast"), 2 },
{ "de", NL ("*"), 1 },
+ { "di", NL ("="), 2 }, /* .name = expr */
{ "dl", NL ("delete "), 1 },
{ "ds", NL (".*"), 2 },
{ "dt", NL ("."), 2 },
{ "dv", NL ("/"), 2 },
+ { "dx", NL ("]="), 2 }, /* [expr] = expr */
{ "eO", NL ("^="), 2 },
{ "eo", NL ("^"), 2 },
{ "eq", NL ("=="), 2 },
{ "sP", NL ("sizeof..."), 1 },
{ "sZ", NL ("sizeof..."), 1 },
{ "sc", NL ("static_cast"), 2 },
+ { "ss", NL ("<=>"), 2 },
{ "st", NL ("sizeof "), 1 },
{ "sz", NL ("sizeof "), 1 },
{ "tr", NL ("throw"), 0 },
::= TT <type>
::= TI <type>
::= TS <type>
+ ::= TA <template-arg>
::= GV <(object) name>
::= T <call-offset> <(base) encoding>
::= Tc <call-offset> <call-offset> <(base) encoding>
return d_make_comp (di, DEMANGLE_COMPONENT_TLS_WRAPPER,
d_name (di), NULL);
+ case 'A':
+ return d_make_comp (di, DEMANGLE_COMPONENT_TPARM_OBJ,
+ d_template_arg (di), NULL);
+
default:
return NULL;
}
switch (d_next_char (di))
{
case 'V':
- return d_make_comp (di, DEMANGLE_COMPONENT_GUARD, d_name (di), NULL);
+ return d_make_comp (di, DEMANGLE_COMPONENT_GUARD,
+ d_name (di), NULL);
case 'R':
{
/* 27 */ { NL ("decimal64"), NL ("decimal64"), D_PRINT_DEFAULT },
/* 28 */ { NL ("decimal128"), NL ("decimal128"), D_PRINT_DEFAULT },
/* 29 */ { NL ("half"), NL ("half"), D_PRINT_FLOAT },
- /* 30 */ { NL ("char16_t"), NL ("char16_t"), D_PRINT_DEFAULT },
- /* 31 */ { NL ("char32_t"), NL ("char32_t"), D_PRINT_DEFAULT },
- /* 32 */ { NL ("decltype(nullptr)"), NL ("decltype(nullptr)"),
+ /* 30 */ { NL ("char8_t"), NL ("char8_t"), D_PRINT_DEFAULT },
+ /* 31 */ { NL ("char16_t"), NL ("char16_t"), D_PRINT_DEFAULT },
+ /* 32 */ { NL ("char32_t"), NL ("char32_t"), D_PRINT_DEFAULT },
+ /* 33 */ { NL ("decltype(nullptr)"), NL ("decltype(nullptr)"),
D_PRINT_DEFAULT },
};
ret = d_make_builtin_type (di, &cplus_demangle_builtin_types[29]);
di->expansion += ret->u.s_builtin.type->len;
break;
+ case 'u':
+ /* char8_t */
+ ret = d_make_builtin_type (di, &cplus_demangle_builtin_types[30]);
+ di->expansion += ret->u.s_builtin.type->len;
+ break;
case 's':
/* char16_t */
- ret = d_make_builtin_type (di, &cplus_demangle_builtin_types[30]);
+ ret = d_make_builtin_type (di, &cplus_demangle_builtin_types[31]);
di->expansion += ret->u.s_builtin.type->len;
break;
case 'i':
/* char32_t */
- ret = d_make_builtin_type (di, &cplus_demangle_builtin_types[31]);
+ ret = d_make_builtin_type (di, &cplus_demangle_builtin_types[32]);
di->expansion += ret->u.s_builtin.type->len;
break;
case 'n':
/* decltype(nullptr) */
- ret = d_make_builtin_type (di, &cplus_demangle_builtin_types[32]);
+ ret = d_make_builtin_type (di, &cplus_demangle_builtin_types[33]);
di->expansion += ret->u.s_builtin.type->len;
break;
static struct demangle_component *
d_function_type (struct d_info *di)
{
- struct demangle_component *ret;
+ struct demangle_component *ret = NULL;
- if (! d_check_char (di, 'F'))
- return NULL;
- if (d_peek_char (di) == 'Y')
+ if ((di->options & DMGL_NO_RECURSE_LIMIT) == 0)
{
- /* Function has C linkage. We don't print this information.
- FIXME: We should print it in verbose mode. */
- d_advance (di, 1);
+ if (di->recursion_level > DEMANGLE_RECURSION_LIMIT)
+ /* FIXME: There ought to be a way to report
+ that the recursion limit has been reached. */
+ return NULL;
+
+ di->recursion_level ++;
}
- ret = d_bare_function_type (di, 1);
- ret = d_ref_qualifier (di, ret);
- if (! d_check_char (di, 'E'))
- return NULL;
+ if (d_check_char (di, 'F'))
+ {
+ if (d_peek_char (di) == 'Y')
+ {
+ /* Function has C linkage. We don't print this information.
+ FIXME: We should print it in verbose mode. */
+ d_advance (di, 1);
+ }
+ ret = d_bare_function_type (di, 1);
+ ret = d_ref_qualifier (di, ret);
+
+ if (! d_check_char (di, 'E'))
+ ret = NULL;
+ }
+
+ if ((di->options & DMGL_NO_RECURSE_LIMIT) == 0)
+ di->recursion_level --;
return ret;
}
if (param < 0)
return NULL;
- ++di->did_subs;
-
return d_make_template_param (di, param);
}
|| code[0] == 'c' || code[0] == 'r'));
}
+/* <unresolved-name> ::= [gs] <base-unresolved-name> # x or (with "gs") ::x
+ ::= sr <unresolved-type> <base-unresolved-name> # T::x / decltype(p)::x
+ # T::N::x /decltype(p)::N::x
+ ::= srN <unresolved-type> <unresolved-qualifier-level>+ E <base-unresolved-name>
+ # A::x, N::y, A<T>::z; "gs" means leading "::"
+ ::= [gs] sr <unresolved-qualifier-level>+ E <base-unresolved-name>
+
+ "gs" is handled elsewhere, as a unary operator. */
+
+static struct demangle_component *
+d_unresolved_name (struct d_info *di)
+{
+ struct demangle_component *type;
+ struct demangle_component *name;
+ char peek;
+
+ /* Consume the "sr". */
+ d_advance (di, 2);
+
+ peek = d_peek_char (di);
+ if (di->unresolved_name_state
+ && (IS_DIGIT (peek)
+ || IS_LOWER (peek)
+ || peek == 'C'
+ || peek == 'U'
+ || peek == 'L'))
+ {
+ /* The third production is ambiguous with the old unresolved-name syntax
+ of <type> <base-unresolved-name>; in the old mangling, A::x was mangled
+ as sr1A1x, now sr1AE1x. So we first try to demangle using the new
+ mangling, then with the old if that fails. */
+ di->unresolved_name_state = -1;
+ type = d_prefix (di, 0);
+ if (d_peek_char (di) == 'E')
+ d_advance (di, 1);
+ }
+ else
+ type = cplus_demangle_type (di);
+ name = d_unqualified_name (di);
+ if (d_peek_char (di) == 'I')
+ name = d_make_comp (di, DEMANGLE_COMPONENT_TEMPLATE, name,
+ d_template_args (di));
+ return d_make_comp (di, DEMANGLE_COMPONENT_QUAL_NAME, type, name);
+}
+
/* <expression> ::= <(unary) operator-name> <expression>
::= <(binary) operator-name> <expression> <expression>
::= <(trinary) operator-name> <expression> <expression> <expression>
::= cl <expression>+ E
::= st <type>
::= <template-param>
- ::= sr <type> <unqualified-name>
- ::= sr <type> <unqualified-name> <template-args>
+ ::= <unresolved-name>
::= <expr-primary>
+
+ <braced-expression> ::= <expression>
+ ::= di <field source-name> <braced-expression> # .name = expr
+ ::= dx <index expression> <braced-expression> # [expr] = expr
+ ::= dX <range begin expression> <range end expression> <braced-expression>
+ # [expr ... expr] = expr
*/
-static inline struct demangle_component *
+static struct demangle_component *
d_expression_1 (struct d_info *di)
{
char peek;
else if (peek == 'T')
return d_template_param (di);
else if (peek == 's' && d_peek_next_char (di) == 'r')
- {
- struct demangle_component *type;
- struct demangle_component *name;
-
- d_advance (di, 2);
- type = cplus_demangle_type (di);
- name = d_unqualified_name (di);
- if (d_peek_char (di) != 'I')
- return d_make_comp (di, DEMANGLE_COMPONENT_QUAL_NAME, type, name);
- else
- return d_make_comp (di, DEMANGLE_COMPONENT_QUAL_NAME, type,
- d_make_comp (di, DEMANGLE_COMPONENT_TEMPLATE, name,
- d_template_args (di)));
- }
+ return d_unresolved_name (di);
else if (peek == 's' && d_peek_next_char (di) == 'p')
{
d_advance (di, 2);
{
/* Brace-enclosed initializer list, untyped or typed. */
struct demangle_component *type = NULL;
+ d_advance (di, 2);
if (peek == 't')
type = cplus_demangle_type (di);
- if (!d_peek_next_char (di))
+ if (!d_peek_char (di) || !d_peek_next_char (di))
return NULL;
- d_advance (di, 2);
return d_make_comp (di, DEMANGLE_COMPONENT_INITIALIZER_LIST,
type, d_exprlist (di, 'E'));
}
if (suffix)
/* Indicate the suffix variant for d_print_comp. */
- return d_make_comp (di, DEMANGLE_COMPONENT_UNARY, op,
- d_make_comp (di,
- DEMANGLE_COMPONENT_BINARY_ARGS,
- operand, operand));
- else
- return d_make_comp (di, DEMANGLE_COMPONENT_UNARY, op,
- operand);
+ operand = d_make_comp (di, DEMANGLE_COMPONENT_BINARY_ARGS,
+ operand, operand);
+
+ return d_make_comp (di, DEMANGLE_COMPONENT_UNARY, op, operand);
}
case 2:
{
else if (code[0] == 'f')
/* fold-expression. */
left = d_operator_name (di);
+ else if (!strcmp (code, "di"))
+ left = d_unqualified_name (di);
else
left = d_expression_1 (di);
if (!strcmp (code, "cl"))
right = d_exprlist (di, 'E');
else if (!strcmp (code, "dt") || !strcmp (code, "pt"))
{
- right = d_unqualified_name (di);
- if (d_peek_char (di) == 'I')
- right = d_make_comp (di, DEMANGLE_COMPONENT_TEMPLATE,
- right, d_template_args (di));
+ peek = d_peek_char (di);
+ /* These codes start a qualified name. */
+ if ((peek == 'g' && d_peek_next_char (di) == 's')
+ || (peek == 's' && d_peek_next_char (di) == 'r'))
+ right = d_expression_1 (di);
+ else
+ {
+ /* Otherwise it's an unqualified name. We use
+ d_unqualified_name rather than d_expression_1 here for
+ old mangled names that didn't add 'on' before operator
+ names. */
+ right = d_unqualified_name (di);
+ if (d_peek_char (di) == 'I')
+ right = d_make_comp (di, DEMANGLE_COMPONENT_TEMPLATE,
+ right, d_template_args (di));
+ }
}
else
right = d_expression_1 (di);
if (code == NULL)
return NULL;
- else if (!strcmp (code, "qu"))
+ else if (!strcmp (code, "qu")
+ || !strcmp (code, "dX"))
{
/* ?: expression. */
first = d_expression_1 (di);
&& type->u.s_builtin.type->print != D_PRINT_DEFAULT)
di->expansion -= type->u.s_builtin.type->len;
+ if (type->type == DEMANGLE_COMPONENT_BUILTIN_TYPE
+ && strcmp (type->u.s_builtin.type->name,
+ cplus_demangle_builtin_types[33].name) == 0)
+ {
+ if (d_peek_char (di) == 'E')
+ {
+ d_advance (di, 1);
+ return type;
+ }
+ }
+
/* Rather than try to interpret the literal value, we just
collect it as a string. Note that it's possible to have a
floating point literal here. The ABI specifies that the
d_local_name (struct d_info *di)
{
struct demangle_component *function;
+ struct demangle_component *name;
if (! d_check_char (di, 'Z'))
return NULL;
function = d_encoding (di, 0);
+ if (!function)
+ return NULL;
if (! d_check_char (di, 'E'))
return NULL;
d_advance (di, 1);
if (! d_discriminator (di))
return NULL;
- return d_make_comp (di, DEMANGLE_COMPONENT_LOCAL_NAME, function,
- d_make_name (di, "string literal",
- sizeof "string literal" - 1));
+ name = d_make_name (di, "string literal", sizeof "string literal" - 1);
}
else
{
- struct demangle_component *name;
int num = -1;
if (d_peek_char (di) == 'd')
}
name = d_name (di);
- if (name)
- switch (name->type)
- {
- /* Lambdas and unnamed types have internal discriminators. */
- case DEMANGLE_COMPONENT_LAMBDA:
- case DEMANGLE_COMPONENT_UNNAMED_TYPE:
- break;
- default:
- if (! d_discriminator (di))
- return NULL;
- }
+
+ if (name
+ /* Lambdas and unnamed types have internal discriminators
+ and are not functions. */
+ && name->type != DEMANGLE_COMPONENT_LAMBDA
+ && name->type != DEMANGLE_COMPONENT_UNNAMED_TYPE)
+ {
+ /* Read and ignore an optional discriminator. */
+ if (! d_discriminator (di))
+ return NULL;
+ }
+
if (num >= 0)
name = d_make_default_arg (di, num, name);
- return d_make_comp (di, DEMANGLE_COMPONENT_LOCAL_NAME, function, name);
}
+
+ /* Elide the return type of the containing function so as to not
+ confuse the user thinking it is the return type of whatever local
+ function we might be containing. */
+ if (function->type == DEMANGLE_COMPONENT_TYPED_NAME
+ && d_right (function)->type == DEMANGLE_COMPONENT_FUNCTION_TYPE)
+ d_left (d_right (function)) = NULL;
+
+ return d_make_comp (di, DEMANGLE_COMPONENT_LOCAL_NAME, function, name);
}
/* <discriminator> ::= _ <number> # when number < 10
ret->u.s_unary_num.num = num;
}
- if (! d_add_substitution (di, ret))
- return NULL;
-
return ret;
}
if (id >= (unsigned int) di->next_sub)
return NULL;
- ++di->did_subs;
-
return di->subs[id];
}
else
/* If there are ABI tags on the abbreviation, it becomes
a substitution candidate. */
dc = d_abi_tags (di, dc);
- d_add_substitution (di, dc);
+ if (! d_add_substitution (di, dc))
+ return NULL;
}
return dc;
}
checkpoint->n = di->n;
checkpoint->next_comp = di->next_comp;
checkpoint->next_sub = di->next_sub;
- checkpoint->did_subs = di->did_subs;
checkpoint->expansion = di->expansion;
}
di->n = checkpoint->n;
di->next_comp = checkpoint->next_comp;
di->next_sub = checkpoint->next_sub;
- di->did_subs = checkpoint->did_subs;
di->expansion = checkpoint->expansion;
}
are larger than the actual numbers encountered. */
static void
-d_count_templates_scopes (int *num_templates, int *num_scopes,
- const struct demangle_component *dc)
+d_count_templates_scopes (struct d_print_info *dpi,
+ struct demangle_component *dc)
{
- if (dc == NULL)
+ if (dc == NULL || dc->d_counting > 1 || dpi->recursion > MAX_RECURSION_COUNT)
return;
+ ++ dc->d_counting;
+
switch (dc->type)
{
case DEMANGLE_COMPONENT_NAME:
break;
case DEMANGLE_COMPONENT_TEMPLATE:
- (*num_templates)++;
+ dpi->num_copy_templates++;
goto recurse_left_right;
case DEMANGLE_COMPONENT_REFERENCE:
case DEMANGLE_COMPONENT_RVALUE_REFERENCE:
if (d_left (dc)->type == DEMANGLE_COMPONENT_TEMPLATE_PARAM)
- (*num_scopes)++;
+ dpi->num_saved_scopes++;
goto recurse_left_right;
case DEMANGLE_COMPONENT_QUAL_NAME:
case DEMANGLE_COMPONENT_VECTOR_TYPE:
case DEMANGLE_COMPONENT_ARGLIST:
case DEMANGLE_COMPONENT_TEMPLATE_ARGLIST:
+ case DEMANGLE_COMPONENT_TPARM_OBJ:
case DEMANGLE_COMPONENT_INITIALIZER_LIST:
case DEMANGLE_COMPONENT_CAST:
case DEMANGLE_COMPONENT_CONVERSION:
case DEMANGLE_COMPONENT_TAGGED_NAME:
case DEMANGLE_COMPONENT_CLONE:
recurse_left_right:
- d_count_templates_scopes (num_templates, num_scopes,
- d_left (dc));
- d_count_templates_scopes (num_templates, num_scopes,
- d_right (dc));
+ /* PR 89394 - Check for too much recursion. */
+ if (dpi->recursion > DEMANGLE_RECURSION_LIMIT)
+ /* FIXME: There ought to be a way to report to the
+ user that the recursion limit has been reached. */
+ return;
+
+ ++ dpi->recursion;
+ d_count_templates_scopes (dpi, d_left (dc));
+ d_count_templates_scopes (dpi, d_right (dc));
+ -- dpi->recursion;
break;
case DEMANGLE_COMPONENT_CTOR:
- d_count_templates_scopes (num_templates, num_scopes,
- dc->u.s_ctor.name);
+ d_count_templates_scopes (dpi, dc->u.s_ctor.name);
break;
case DEMANGLE_COMPONENT_DTOR:
- d_count_templates_scopes (num_templates, num_scopes,
- dc->u.s_dtor.name);
+ d_count_templates_scopes (dpi, dc->u.s_dtor.name);
break;
case DEMANGLE_COMPONENT_EXTENDED_OPERATOR:
- d_count_templates_scopes (num_templates, num_scopes,
- dc->u.s_extended_operator.name);
+ d_count_templates_scopes (dpi, dc->u.s_extended_operator.name);
break;
case DEMANGLE_COMPONENT_FIXED_TYPE:
- d_count_templates_scopes (num_templates, num_scopes,
- dc->u.s_fixed.length);
+ d_count_templates_scopes (dpi, dc->u.s_fixed.length);
break;
case DEMANGLE_COMPONENT_GLOBAL_CONSTRUCTORS:
case DEMANGLE_COMPONENT_GLOBAL_DESTRUCTORS:
- d_count_templates_scopes (num_templates, num_scopes,
- d_left (dc));
+ d_count_templates_scopes (dpi, d_left (dc));
break;
case DEMANGLE_COMPONENT_LAMBDA:
case DEMANGLE_COMPONENT_DEFAULT_ARG:
- d_count_templates_scopes (num_templates, num_scopes,
- dc->u.s_unary_num.sub);
+ d_count_templates_scopes (dpi, dc->u.s_unary_num.sub);
break;
}
}
static void
d_print_init (struct d_print_info *dpi, demangle_callbackref callback,
- void *opaque, const struct demangle_component *dc)
+ void *opaque, struct demangle_component *dc)
{
dpi->len = 0;
dpi->last_char = '\0';
dpi->opaque = opaque;
dpi->demangle_failure = 0;
+ dpi->recursion = 0;
dpi->is_lambda_arg = 0;
dpi->component_stack = NULL;
dpi->next_copy_template = 0;
dpi->num_copy_templates = 0;
- d_count_templates_scopes (&dpi->num_copy_templates,
- &dpi->num_saved_scopes, dc);
+ d_count_templates_scopes (dpi, dc);
+ /* If we did not reach the recursion limit, then reset the
+ current recursion value back to 0, so that we can print
+ the templates. */
+ if (dpi->recursion < DEMANGLE_RECURSION_LIMIT)
+ dpi->recursion = 0;
dpi->num_copy_templates *= dpi->num_saved_scopes;
dpi->current_template = NULL;
return 1;
}
+/* True iff DC represents a C99-style designated initializer. */
+
+static int
+is_designated_init (struct demangle_component *dc)
+{
+ if (dc->type != DEMANGLE_COMPONENT_BINARY
+ && dc->type != DEMANGLE_COMPONENT_TRINARY)
+ return 0;
+
+ struct demangle_component *op = d_left (dc);
+ const char *code = op->u.s_operator.op->code;
+ return (code[0] == 'd'
+ && (code[1] == 'i' || code[1] == 'x' || code[1] == 'X'));
+}
+
+/* If DC represents a C99-style designated initializer, print it and return
+ true; otherwise, return false. */
+
+static int
+d_maybe_print_designated_init (struct d_print_info *dpi, int options,
+ struct demangle_component *dc)
+{
+ if (!is_designated_init (dc))
+ return 0;
+
+ const char *code = d_left (dc)->u.s_operator.op->code;
+
+ struct demangle_component *operands = d_right (dc);
+ struct demangle_component *op1 = d_left (operands);
+ struct demangle_component *op2 = d_right (operands);
+
+ if (code[1] == 'i')
+ d_append_char (dpi, '.');
+ else
+ d_append_char (dpi, '[');
+
+ d_print_comp (dpi, options, op1);
+ if (code[1] == 'X')
+ {
+ d_append_string (dpi, " ... ");
+ d_print_comp (dpi, options, d_left (op2));
+ op2 = d_right (op2);
+ }
+ if (code[1] != 'i')
+ d_append_char (dpi, ']');
+ if (is_designated_init (op2))
+ {
+ /* Don't put '=' or '(' between chained designators. */
+ d_print_comp (dpi, options, op2);
+ }
+ else
+ {
+ d_append_char (dpi, '=');
+ d_print_subexpr (dpi, options, op2);
+ }
+ return 1;
+}
+
/* Subroutine to handle components. */
static void
return;
}
- /* If typed_name is a template, then it applies to the
- function type as well. */
- if (typed_name->type == DEMANGLE_COMPONENT_TEMPLATE)
- {
- dpt.next = dpi->templates;
- dpi->templates = &dpt;
- dpt.template_decl = typed_name;
- }
-
/* If typed_name is a DEMANGLE_COMPONENT_LOCAL_NAME, then
there may be CV-qualifiers on its right argument which
- really apply here; this happens when parsing a class which
+ really apply here; this happens when parsing a class that
is local to a function. */
if (typed_name->type == DEMANGLE_COMPONENT_LOCAL_NAME)
{
- struct demangle_component *local_name;
-
- local_name = d_right (typed_name);
- if (local_name->type == DEMANGLE_COMPONENT_DEFAULT_ARG)
- local_name = local_name->u.s_unary_num.sub;
- if (local_name == NULL)
- {
- d_print_error (dpi);
- return;
- }
- while (is_fnqual_component_type (local_name->type))
+ typed_name = d_right (typed_name);
+ if (typed_name->type == DEMANGLE_COMPONENT_DEFAULT_ARG)
+ typed_name = typed_name->u.s_unary_num.sub;
+ while (typed_name != NULL
+ && is_fnqual_component_type (typed_name->type))
{
if (i >= sizeof adpm / sizeof adpm[0])
{
adpm[i].next = &adpm[i - 1];
dpi->modifiers = &adpm[i];
- adpm[i - 1].mod = local_name;
+ adpm[i - 1].mod = typed_name;
adpm[i - 1].printed = 0;
adpm[i - 1].templates = dpi->templates;
++i;
- local_name = d_left (local_name);
+ typed_name = d_left (typed_name);
+ }
+ if (typed_name == NULL)
+ {
+ d_print_error (dpi);
+ return;
}
}
+ /* If typed_name is a template, then it applies to the
+ function type as well. */
+ if (typed_name->type == DEMANGLE_COMPONENT_TEMPLATE)
+ {
+ dpt.next = dpi->templates;
+ dpi->templates = &dpt;
+ dpt.template_decl = typed_name;
+ }
+
d_print_comp (dpi, options, d_right (dc));
if (typed_name->type == DEMANGLE_COMPONENT_TEMPLATE)
}
return;
+ case DEMANGLE_COMPONENT_TPARM_OBJ:
+ d_append_string (dpi, "template parameter object for ");
+ d_print_comp (dpi, options, d_left (dc));
+ return;
+
case DEMANGLE_COMPONENT_CTOR:
d_print_comp (dpi, options, dc->u.s_ctor.name);
return;
}
case DEMANGLE_COMPONENT_EXTENDED_OPERATOR:
- d_append_string (dpi, "operator ");
- d_print_comp (dpi, options, dc->u.s_extended_operator.name);
- return;
+ {
+ struct demangle_component *name = dc->u.s_extended_operator.name;
+ if (name->type == DEMANGLE_COMPONENT_NAME
+ && !strncmp (name->u.s_name.s, "__alignof__", name->u.s_name.len))
+ d_print_comp (dpi, options, dc->u.s_extended_operator.name);
+ else
+ {
+ d_append_string (dpi, "operator ");
+ d_print_comp (dpi, options, dc->u.s_extended_operator.name);
+ }
+ return;
+ }
case DEMANGLE_COMPONENT_CONVERSION:
d_append_string (dpi, "operator ");
if (code && !strcmp (code, "gs"))
/* Avoid parens after '::'. */
d_print_comp (dpi, options, operand);
- else if (code && !strcmp (code, "st"))
- /* Always print parens for sizeof (type). */
+ else if ((code && !strcmp (code, "st"))
+ || (op->type == DEMANGLE_COMPONENT_EXTENDED_OPERATOR
+ && (op->u.s_extended_operator.name->type
+ == DEMANGLE_COMPONENT_NAME)
+ && !strncmp (op->u.s_extended_operator.name->u.s_name.s,
+ "__alignof__",
+ op->u.s_extended_operator.name->u.s_name.len)))
+ /* Always print parens for sizeof (type) and __alignof__. */
{
d_append_char (dpi, '(');
d_print_comp (dpi, options, operand);
if (d_maybe_print_fold_expression (dpi, options, dc))
return;
+ if (d_maybe_print_designated_init (dpi, options, dc))
+ return;
+
/* We wrap an expression which uses the greater-than operator in
an extra layer of parens so that it does not get confused
with the '>' which ends the template parameters. */
}
if (d_maybe_print_fold_expression (dpi, options, dc))
return;
+ if (d_maybe_print_designated_init (dpi, options, dc))
+ return;
{
struct demangle_component *op = d_left (dc);
struct demangle_component *first = d_left (d_right (dc));
struct demangle_component *dc)
{
struct d_component_stack self;
- if (dc == NULL || dc->d_printing > 1)
+ if (dc == NULL || dc->d_printing > 1 || dpi->recursion > MAX_RECURSION_COUNT)
{
d_print_error (dpi);
return;
}
- else
- dc->d_printing++;
+
+ dc->d_printing++;
+ dpi->recursion++;
self.dc = dc;
self.parent = dpi->component_stack;
dpi->component_stack = self.parent;
dc->d_printing--;
+ dpi->recursion--;
}
/* Print a Java dentifier. For Java we try to handle encoded extended
d_append_string (dpi, "&&");
return;
case DEMANGLE_COMPONENT_COMPLEX:
- d_append_string (dpi, "complex ");
+ d_append_string (dpi, " _Complex");
return;
case DEMANGLE_COMPONENT_IMAGINARY:
- d_append_string (dpi, "imaginary ");
+ d_append_string (dpi, " _Imaginary");
return;
case DEMANGLE_COMPONENT_PTRMEM_TYPE:
if (d_last_char (dpi) != '(')
di->n = mangled;
- /* We can not need more components than twice the number of chars in
+ /* We cannot need more components than twice the number of chars in
the mangled string. Most components correspond directly to
chars, but the ARGLIST types are exceptions. */
di->num_comps = 2 * len;
di->next_comp = 0;
- /* Similarly, we can not need more substitutions than there are
+ /* Similarly, we cannot need more substitutions than there are
chars in the mangled string. */
di->num_subs = len;
di->next_sub = 0;
- di->did_subs = 0;
di->last_name = NULL;
di->expansion = 0;
di->is_expression = 0;
di->is_conversion = 0;
+ di->recursion_level = 0;
}
/* Internal implementation for the demangler. If MANGLED is a g++ v3 ABI
type = DCT_TYPE;
}
+ di.unresolved_name_state = 1;
+
+ again:
cplus_demangle_init_info (mangled, options, strlen (mangled), &di);
+ /* PR 87675 - Check for a mangled string that is so long
+ that we do not have enough stack space to demangle it. */
+ if (((options & DMGL_NO_RECURSE_LIMIT) == 0)
+ /* This check is a bit arbitrary, since what we really want to do is to
+ compare the sizes of the di.comps and di.subs arrays against the
+ amount of stack space remaining. But there is no portable way to do
+ this, so instead we use the recursion limit as a guide to the maximum
+ size of the arrays. */
+ && (unsigned long) di.num_comps > DEMANGLE_RECURSION_LIMIT)
+ {
+ /* FIXME: We need a way to indicate that a stack limit has been reached. */
+ return 0;
+ }
+
{
#if 0 /* in valgrind */
#ifdef CP_DYNAMIC_ARRAYS
if (((options & DMGL_PARAMS) != 0) && d_peek_char (&di) != '\0')
dc = NULL;
+ /* See discussion in d_unresolved_name. */
+ if (dc == NULL && di.unresolved_name_state == -1)
+ {
+ di.unresolved_name_state = 0;
+ goto again;
+ }
+
#ifdef CP_DEMANGLE_DEBUG
d_dump (dc, 0);
#endif
/* Internal demangler interface for g++ V3 ABI.
- Copyright (C) 2003-2017 Free Software Foundation, Inc.
+ Copyright (C) 2003-2021 Free Software Foundation, Inc.
Written by Ian Lance Taylor <ian@wasabisystems.com>.
This file is part of the libiberty library, which is part of GCC.
int next_sub;
/* The number of available entries in the subs array. */
int num_subs;
- /* The number of substitutions which we actually made from the subs
- array, plus the number of template parameter references we
- saw. */
- int did_subs;
/* The last name we saw, for constructors and destructors. */
struct demangle_component *last_name;
/* A running total of the length of large expansions from the
/* Non-zero if we are parsing the type operand of a conversion
operator, but not when in an expression. */
int is_conversion;
+ /* 1: using new unresolved-name grammar.
+ -1: using new unresolved-name grammar and saw an unresolved-name.
+ 0: using old unresolved-name grammar. */
+ int unresolved_name_state;
+ /* If DMGL_NO_RECURSE_LIMIT is not active then this is set to
+ the current recursion level. */
+ unsigned int recursion_level;
};
/* To avoid running past the ending '\0', don't:
extern const struct demangle_operator_info cplus_demangle_operators[];
#endif
-#define D_BUILTIN_TYPE_COUNT (33)
+#define D_BUILTIN_TYPE_COUNT (34)
CP_STATIC_IF_GLIBCPP_V3
const struct demangle_builtin_type_info
/* Demangler for GNU C++
- Copyright (C) 1989-2017 Free Software Foundation, Inc.
+ Copyright (C) 1989-2021 Free Software Foundation, Inc.
Written by James Clark (jjc@jclark.uucp)
Rewritten by Fred Fish (fnf@cygnus.com) for ARM and Lucid demangling
Modified by Satish Pai (pai@apollo.hp.com) for HP demangling
not, write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
Boston, MA 02110-1301, USA. */
-/* This file exports two functions; cplus_mangle_opname and cplus_demangle.
-
- This file imports xmalloc and xrealloc, which are like malloc and
- realloc except that they generate a fatal error if there is no
- available memory. */
-
/* This file lives in both GCC and libiberty. When making changes, please
try not to break either. */
#endif /* ! in valgrind */
#if 0 /* in valgrind */
-#include <sys/types.h>
#include <string.h>
-#include <stdio.h>
#endif /* ! in valgrind */
#if 0 /* in valgrind */
#endif
#endif /* ! in valgrind */
-#if 0 /* in valgrind */
-#ifdef HAVE_LIMITS_H
-#include <limits.h>
-#endif
-#endif /* ! in valgrind */
-#ifndef INT_MAX
-# define INT_MAX (int)(((unsigned int) ~0) >> 1) /* 0x7FFFFFFF */
-#endif
-
#if 0 /* in valgrind */
#include <demangle.h>
#undef CURRENT_DEMANGLING_STYLE
-#define CURRENT_DEMANGLING_STYLE work->options
+#define CURRENT_DEMANGLING_STYLE options
#endif /* ! in valgrind */
#if 0 /* in valgrind */
#include "demangle.h"
#include "safe-ctype.h"
-#define min(X,Y) (((X) < (Y)) ? (X) : (Y))
-
-/* A value at least one greater than the maximum number of characters
- that will be output when using the `%d' format with `printf'. */
-#define INTBUF_SIZE 32
-
-extern void fancy_abort (void) ATTRIBUTE_NORETURN;
-
-/* In order to allow a single demangler executable to demangle strings
- using various common values of CPLUS_MARKER, as well as any specific
- one set at compile time, we maintain a string containing all the
- commonly used ones, and check to see if the marker we are looking for
- is in that string. CPLUS_MARKER is usually '$' on systems where the
- assembler can deal with that. Where the assembler can't, it's usually
- '.' (but on many systems '.' is used for other things). We put the
- current defined CPLUS_MARKER first (which defaults to '$'), followed
- by the next most common value, followed by an explicit '$' in case
- the value of CPLUS_MARKER is not '$'.
-
- We could avoid this if we could just get g++ to tell us what the actual
- cplus marker character is as part of the debug information, perhaps by
- ensuring that it is the character that terminates the gcc<n>_compiled
- marker symbol (FIXME). */
-
-#if !defined (CPLUS_MARKER)
-#define CPLUS_MARKER '$'
-#endif
-
enum demangling_styles current_demangling_style = auto_demangling;
-static char cplus_markers[] = { CPLUS_MARKER, '.', '$', '\0' };
-
-static char char_str[2] = { '\000', '\000' };
-
-void
-set_cplus_marker_for_demangling (int ch)
-{
- cplus_markers[0] = ch;
-}
-
-typedef struct string /* Beware: these aren't required to be */
-{ /* '\0' terminated. */
- char *b; /* pointer to start of string */
- char *p; /* pointer after last character */
- char *e; /* pointer after end of allocated space */
-} string;
-
-/* Stuff that is shared between sub-routines.
- Using a shared structure allows cplus_demangle to be reentrant. */
-
-struct work_stuff
-{
- int options;
- char **typevec;
- char **ktypevec;
- char **btypevec;
- int numk;
- int numb;
- int ksize;
- int bsize;
- int ntypes;
- int typevec_size;
- int constructor;
- int destructor;
- int static_type; /* A static member function */
- int temp_start; /* index in demangled to start of template args */
- int type_quals; /* The type qualifiers. */
- int dllimported; /* Symbol imported from a PE DLL */
- char **tmpl_argvec; /* Template function arguments. */
- int ntmpl_args; /* The number of template function arguments. */
- int forgetting_types; /* Nonzero if we are not remembering the types
- we see. */
- string* previous_argument; /* The last function argument demangled. */
- int nrepeats; /* The number of times to repeat the previous
- argument. */
- int *proctypevec; /* Indices of currently processed remembered typevecs. */
- int proctypevec_size;
- int nproctypes;
-};
-
-#define PRINT_ANSI_QUALIFIERS (work -> options & DMGL_ANSI)
-#define PRINT_ARG_TYPES (work -> options & DMGL_PARAMS)
-
-static const struct optable
-{
- const char *const in;
- const char *const out;
- const int flags;
-} optable[] = {
- {"nw", " new", DMGL_ANSI}, /* new (1.92, ansi) */
- {"dl", " delete", DMGL_ANSI}, /* new (1.92, ansi) */
- {"new", " new", 0}, /* old (1.91, and 1.x) */
- {"delete", " delete", 0}, /* old (1.91, and 1.x) */
- {"vn", " new []", DMGL_ANSI}, /* GNU, pending ansi */
- {"vd", " delete []", DMGL_ANSI}, /* GNU, pending ansi */
- {"as", "=", DMGL_ANSI}, /* ansi */
- {"ne", "!=", DMGL_ANSI}, /* old, ansi */
- {"eq", "==", DMGL_ANSI}, /* old, ansi */
- {"ge", ">=", DMGL_ANSI}, /* old, ansi */
- {"gt", ">", DMGL_ANSI}, /* old, ansi */
- {"le", "<=", DMGL_ANSI}, /* old, ansi */
- {"lt", "<", DMGL_ANSI}, /* old, ansi */
- {"plus", "+", 0}, /* old */
- {"pl", "+", DMGL_ANSI}, /* ansi */
- {"apl", "+=", DMGL_ANSI}, /* ansi */
- {"minus", "-", 0}, /* old */
- {"mi", "-", DMGL_ANSI}, /* ansi */
- {"ami", "-=", DMGL_ANSI}, /* ansi */
- {"mult", "*", 0}, /* old */
- {"ml", "*", DMGL_ANSI}, /* ansi */
- {"amu", "*=", DMGL_ANSI}, /* ansi (ARM/Lucid) */
- {"aml", "*=", DMGL_ANSI}, /* ansi (GNU/g++) */
- {"convert", "+", 0}, /* old (unary +) */
- {"negate", "-", 0}, /* old (unary -) */
- {"trunc_mod", "%", 0}, /* old */
- {"md", "%", DMGL_ANSI}, /* ansi */
- {"amd", "%=", DMGL_ANSI}, /* ansi */
- {"trunc_div", "/", 0}, /* old */
- {"dv", "/", DMGL_ANSI}, /* ansi */
- {"adv", "/=", DMGL_ANSI}, /* ansi */
- {"truth_andif", "&&", 0}, /* old */
- {"aa", "&&", DMGL_ANSI}, /* ansi */
- {"truth_orif", "||", 0}, /* old */
- {"oo", "||", DMGL_ANSI}, /* ansi */
- {"truth_not", "!", 0}, /* old */
- {"nt", "!", DMGL_ANSI}, /* ansi */
- {"postincrement","++", 0}, /* old */
- {"pp", "++", DMGL_ANSI}, /* ansi */
- {"postdecrement","--", 0}, /* old */
- {"mm", "--", DMGL_ANSI}, /* ansi */
- {"bit_ior", "|", 0}, /* old */
- {"or", "|", DMGL_ANSI}, /* ansi */
- {"aor", "|=", DMGL_ANSI}, /* ansi */
- {"bit_xor", "^", 0}, /* old */
- {"er", "^", DMGL_ANSI}, /* ansi */
- {"aer", "^=", DMGL_ANSI}, /* ansi */
- {"bit_and", "&", 0}, /* old */
- {"ad", "&", DMGL_ANSI}, /* ansi */
- {"aad", "&=", DMGL_ANSI}, /* ansi */
- {"bit_not", "~", 0}, /* old */
- {"co", "~", DMGL_ANSI}, /* ansi */
- {"call", "()", 0}, /* old */
- {"cl", "()", DMGL_ANSI}, /* ansi */
- {"alshift", "<<", 0}, /* old */
- {"ls", "<<", DMGL_ANSI}, /* ansi */
- {"als", "<<=", DMGL_ANSI}, /* ansi */
- {"arshift", ">>", 0}, /* old */
- {"rs", ">>", DMGL_ANSI}, /* ansi */
- {"ars", ">>=", DMGL_ANSI}, /* ansi */
- {"component", "->", 0}, /* old */
- {"pt", "->", DMGL_ANSI}, /* ansi; Lucid C++ form */
- {"rf", "->", DMGL_ANSI}, /* ansi; ARM/GNU form */
- {"indirect", "*", 0}, /* old */
- {"method_call", "->()", 0}, /* old */
- {"addr", "&", 0}, /* old (unary &) */
- {"array", "[]", 0}, /* old */
- {"vc", "[]", DMGL_ANSI}, /* ansi */
- {"compound", ", ", 0}, /* old */
- {"cm", ", ", DMGL_ANSI}, /* ansi */
- {"cond", "?:", 0}, /* old */
- {"cn", "?:", DMGL_ANSI}, /* pseudo-ansi */
- {"max", ">?", 0}, /* old */
- {"mx", ">?", DMGL_ANSI}, /* pseudo-ansi */
- {"min", "<?", 0}, /* old */
- {"mn", "<?", DMGL_ANSI}, /* pseudo-ansi */
- {"nop", "", 0}, /* old (for operator=) */
- {"rm", "->*", DMGL_ANSI}, /* ansi */
- {"sz", "sizeof ", DMGL_ANSI} /* pseudo-ansi */
-};
-
-/* These values are used to indicate the various type varieties.
- They are all non-zero so that they can be used as `success'
- values. */
-typedef enum type_kind_t
-{
- tk_none,
- tk_pointer,
- tk_reference,
- tk_rvalue_reference,
- tk_integral,
- tk_bool,
- tk_char,
- tk_real
-} type_kind_t;
-
const struct demangler_engine libiberty_demanglers[] =
{
{
"Automatic selection based on executable"
}
,
- {
- GNU_DEMANGLING_STYLE_STRING,
- gnu_demangling,
- "GNU (g++) style demangling"
- }
- ,
- {
- LUCID_DEMANGLING_STYLE_STRING,
- lucid_demangling,
- "Lucid (lcc) style demangling"
- }
- ,
- {
- ARM_DEMANGLING_STYLE_STRING,
- arm_demangling,
- "ARM style demangling"
- }
- ,
- {
- HP_DEMANGLING_STYLE_STRING,
- hp_demangling,
- "HP (aCC) style demangling"
- }
- ,
- {
- EDG_DEMANGLING_STYLE_STRING,
- edg_demangling,
- "EDG style demangling"
- }
- ,
{
GNU_V3_DEMANGLING_STYLE_STRING,
gnu_v3_demangling,
- "GNU (g++) V3 ABI-style demangling"
+ "GNU (g++) V3 (Itanium C++ ABI) style demangling"
}
,
{
}
};
-#define STRING_EMPTY(str) ((str) -> b == (str) -> p)
-#define APPEND_BLANK(str) {if (!STRING_EMPTY(str)) \
- string_append(str, " ");}
-#define LEN_STRING(str) ( (STRING_EMPTY(str))?0:((str)->p - (str)->b))
-
-/* The scope separator appropriate for the language being demangled. */
-
-#define SCOPE_STRING(work) ((work->options & DMGL_JAVA) ? "." : "::")
-
-#define ARM_VTABLE_STRING "__vtbl__" /* Lucid/ARM virtual table prefix */
-#define ARM_VTABLE_STRLEN 8 /* strlen (ARM_VTABLE_STRING) */
-
-/* Prototypes for local functions */
-
-static void delete_work_stuff (struct work_stuff *);
-
-static void delete_non_B_K_work_stuff (struct work_stuff *);
-
-static char *mop_up (struct work_stuff *, string *, int);
-
-static void squangle_mop_up (struct work_stuff *);
-
-static void work_stuff_copy_to_from (struct work_stuff *, struct work_stuff *);
-
-#if 0
-static int
-demangle_method_args (struct work_stuff *, const char **, string *);
-#endif
-
-static char *
-internal_cplus_demangle (struct work_stuff *, const char *);
-
-static int
-demangle_template_template_parm (struct work_stuff *work,
- const char **, string *);
-
-static int
-demangle_template (struct work_stuff *work, const char **, string *,
- string *, int, int);
-
-static int
-arm_pt (const char *, int, const char **, const char **);
-
-static int
-demangle_class_name (struct work_stuff *, const char **, string *);
-
-static int
-demangle_qualified (struct work_stuff *, const char **, string *,
- int, int);
-
-static int demangle_class (struct work_stuff *, const char **, string *);
-
-static int demangle_fund_type (struct work_stuff *, const char **, string *);
-
-static int demangle_signature (struct work_stuff *, const char **, string *);
-
-static int demangle_prefix (struct work_stuff *, const char **, string *);
-
-static int gnu_special (struct work_stuff *, const char **, string *);
-
-static int arm_special (const char **, string *);
-
-static void string_need (string *, int);
-
-static void string_delete (string *);
-
-static void
-string_init (string *);
-
-static void string_clear (string *);
-
-#if 0
-static int string_empty (string *);
-#endif
-
-static void string_append (string *, const char *);
-
-static void string_appends (string *, string *);
-
-static void string_appendn (string *, const char *, int);
-
-static void string_prepend (string *, const char *);
-
-static void string_prependn (string *, const char *, int);
-
-static void string_append_template_idx (string *, int);
-
-static int get_count (const char **, int *);
-
-static int consume_count (const char **);
-
-static int consume_count_with_underscores (const char**);
-
-static int demangle_args (struct work_stuff *, const char **, string *);
-
-static int demangle_nested_args (struct work_stuff*, const char**, string*);
-
-static int do_type (struct work_stuff *, const char **, string *);
-
-static int do_arg (struct work_stuff *, const char **, string *);
-
-static int
-demangle_function_name (struct work_stuff *, const char **, string *,
- const char *);
-
-static int
-iterate_demangle_function (struct work_stuff *,
- const char **, string *, const char *);
-
-static void remember_type (struct work_stuff *, const char *, int);
-
-static void push_processed_type (struct work_stuff *, int);
-
-static void pop_processed_type (struct work_stuff *);
-
-static void remember_Btype (struct work_stuff *, const char *, int, int);
-
-static int register_Btype (struct work_stuff *);
-
-static void remember_Ktype (struct work_stuff *, const char *, int);
-
-static void forget_types (struct work_stuff *);
-
-static void forget_B_and_K_types (struct work_stuff *);
-
-static void string_prepends (string *, string *);
-
-static int
-demangle_template_value_parm (struct work_stuff*, const char**,
- string*, type_kind_t);
-
-static int
-do_hpacc_template_const_value (struct work_stuff *, const char **, string *);
-
-static int
-do_hpacc_template_literal (struct work_stuff *, const char **, string *);
-
-static int snarf_numeric_literal (const char **, string *);
-
-/* There is a TYPE_QUAL value for each type qualifier. They can be
- combined by bitwise-or to form the complete set of qualifiers for a
- type. */
-
-#define TYPE_UNQUALIFIED 0x0
-#define TYPE_QUAL_CONST 0x1
-#define TYPE_QUAL_VOLATILE 0x2
-#define TYPE_QUAL_RESTRICT 0x4
-
-static int code_for_qualifier (int);
-
-static const char* qualifier_string (int);
-
-static const char* demangle_qualifier (int);
-
-static int demangle_expression (struct work_stuff *, const char **, string *,
- type_kind_t);
-
-static int
-demangle_integral_value (struct work_stuff *, const char **, string *);
-
-static int
-demangle_real_value (struct work_stuff *, const char **, string *);
-
-static void
-demangle_arm_hp_template (struct work_stuff *, const char **, int, string *);
-
-static void
-recursively_demangle (struct work_stuff *, const char **, string *, int);
-
-/* Translate count to integer, consuming tokens in the process.
- Conversion terminates on the first non-digit character.
-
- Trying to consume something that isn't a count results in no
- consumption of input and a return of -1.
-
- Overflow consumes the rest of the digits, and returns -1. */
-
-static int
-consume_count (const char **type)
-{
- int count = 0;
-
- if (! ISDIGIT ((unsigned char)**type))
- return -1;
-
- while (ISDIGIT ((unsigned char)**type))
- {
- count *= 10;
-
- /* Check for overflow.
- We assume that count is represented using two's-complement;
- no power of two is divisible by ten, so if an overflow occurs
- when multiplying by ten, the result will not be a multiple of
- ten. */
- if ((count % 10) != 0)
- {
- while (ISDIGIT ((unsigned char) **type))
- (*type)++;
- return -1;
- }
-
- count += **type - '0';
- (*type)++;
- }
-
- if (count < 0)
- count = -1;
-
- return (count);
-}
-
-
-/* Like consume_count, but for counts that are preceded and followed
- by '_' if they are greater than 10. Also, -1 is returned for
- failure, since 0 can be a valid value. */
-
-static int
-consume_count_with_underscores (const char **mangled)
-{
- int idx;
-
- if (**mangled == '_')
- {
- (*mangled)++;
- if (!ISDIGIT ((unsigned char)**mangled))
- return -1;
-
- idx = consume_count (mangled);
- if (**mangled != '_')
- /* The trailing underscore was missing. */
- return -1;
-
- (*mangled)++;
- }
- else
- {
- if (**mangled < '0' || **mangled > '9')
- return -1;
-
- idx = **mangled - '0';
- (*mangled)++;
- }
-
- return idx;
-}
-
-/* C is the code for a type-qualifier. Return the TYPE_QUAL
- corresponding to this qualifier. */
-
-static int
-code_for_qualifier (int c)
-{
- switch (c)
- {
- case 'C':
- return TYPE_QUAL_CONST;
-
- case 'V':
- return TYPE_QUAL_VOLATILE;
-
- case 'u':
- return TYPE_QUAL_RESTRICT;
-
- default:
- break;
- }
-
- /* C was an invalid qualifier. */
- abort ();
-}
-
-/* Return the string corresponding to the qualifiers given by
- TYPE_QUALS. */
-
-static const char*
-qualifier_string (int type_quals)
-{
- switch (type_quals)
- {
- case TYPE_UNQUALIFIED:
- return "";
-
- case TYPE_QUAL_CONST:
- return "const";
-
- case TYPE_QUAL_VOLATILE:
- return "volatile";
-
- case TYPE_QUAL_RESTRICT:
- return "__restrict";
-
- case TYPE_QUAL_CONST | TYPE_QUAL_VOLATILE:
- return "const volatile";
-
- case TYPE_QUAL_CONST | TYPE_QUAL_RESTRICT:
- return "const __restrict";
-
- case TYPE_QUAL_VOLATILE | TYPE_QUAL_RESTRICT:
- return "volatile __restrict";
-
- case TYPE_QUAL_CONST | TYPE_QUAL_VOLATILE | TYPE_QUAL_RESTRICT:
- return "const volatile __restrict";
-
- default:
- break;
- }
-
- /* TYPE_QUALS was an invalid qualifier set. */
- abort ();
-}
-
-/* C is the code for a type-qualifier. Return the string
- corresponding to this qualifier. This function should only be
- called with a valid qualifier code. */
-
-static const char*
-demangle_qualifier (int c)
-{
- return qualifier_string (code_for_qualifier (c));
-}
-
-int
-cplus_demangle_opname (const char *opname, char *result, int options)
-{
- int len, len1, ret;
- string type;
- struct work_stuff work[1];
- const char *tem;
-
- len = strlen(opname);
- result[0] = '\0';
- ret = 0;
- memset ((char *) work, 0, sizeof (work));
- work->options = options;
-
- if (opname[0] == '_' && opname[1] == '_'
- && opname[2] == 'o' && opname[3] == 'p')
- {
- /* ANSI. */
- /* type conversion operator. */
- tem = opname + 4;
- if (do_type (work, &tem, &type))
- {
- strcat (result, "operator ");
- strncat (result, type.b, type.p - type.b);
- string_delete (&type);
- ret = 1;
- }
- }
- else if (opname[0] == '_' && opname[1] == '_'
- && ISLOWER((unsigned char)opname[2])
- && ISLOWER((unsigned char)opname[3]))
- {
- if (opname[4] == '\0')
- {
- /* Operator. */
- size_t i;
- for (i = 0; i < ARRAY_SIZE (optable); i++)
- {
- if (strlen (optable[i].in) == 2
- && memcmp (optable[i].in, opname + 2, 2) == 0)
- {
- strcat (result, "operator");
- strcat (result, optable[i].out);
- ret = 1;
- break;
- }
- }
- }
- else
- {
- if (opname[2] == 'a' && opname[5] == '\0')
- {
- /* Assignment. */
- size_t i;
- for (i = 0; i < ARRAY_SIZE (optable); i++)
- {
- if (strlen (optable[i].in) == 3
- && memcmp (optable[i].in, opname + 2, 3) == 0)
- {
- strcat (result, "operator");
- strcat (result, optable[i].out);
- ret = 1;
- break;
- }
- }
- }
- }
- }
- else if (len >= 3
- && opname[0] == 'o'
- && opname[1] == 'p'
- && strchr (cplus_markers, opname[2]) != NULL)
- {
- /* see if it's an assignment expression */
- if (len >= 10 /* op$assign_ */
- && memcmp (opname + 3, "assign_", 7) == 0)
- {
- size_t i;
- for (i = 0; i < ARRAY_SIZE (optable); i++)
- {
- len1 = len - 10;
- if ((int) strlen (optable[i].in) == len1
- && memcmp (optable[i].in, opname + 10, len1) == 0)
- {
- strcat (result, "operator");
- strcat (result, optable[i].out);
- strcat (result, "=");
- ret = 1;
- break;
- }
- }
- }
- else
- {
- size_t i;
- for (i = 0; i < ARRAY_SIZE (optable); i++)
- {
- len1 = len - 3;
- if ((int) strlen (optable[i].in) == len1
- && memcmp (optable[i].in, opname + 3, len1) == 0)
- {
- strcat (result, "operator");
- strcat (result, optable[i].out);
- ret = 1;
- break;
- }
- }
- }
- }
- else if (len >= 5 && memcmp (opname, "type", 4) == 0
- && strchr (cplus_markers, opname[4]) != NULL)
- {
- /* type conversion operator */
- tem = opname + 5;
- if (do_type (work, &tem, &type))
- {
- strcat (result, "operator ");
- strncat (result, type.b, type.p - type.b);
- string_delete (&type);
- ret = 1;
- }
- }
- squangle_mop_up (work);
- return ret;
-
-}
-
-/* Takes operator name as e.g. "++" and returns mangled
- operator name (e.g. "postincrement_expr"), or NULL if not found.
-
- If OPTIONS & DMGL_ANSI == 1, return the ANSI name;
- if OPTIONS & DMGL_ANSI == 0, return the old GNU name. */
-
-const char *
-cplus_mangle_opname (const char *opname, int options)
-{
- size_t i;
- int len;
-
- len = strlen (opname);
- for (i = 0; i < ARRAY_SIZE (optable); i++)
- {
- if ((int) strlen (optable[i].out) == len
- && (options & DMGL_ANSI) == (optable[i].flags & DMGL_ANSI)
- && memcmp (optable[i].out, opname, len) == 0)
- return optable[i].in;
- }
- return (0);
-}
-
/* Add a routine to set the demangling style to be sure it is valid and
allow for any demangler initialization that maybe necessary. */
It is the caller's responsibility to free the string which
is returned.
- The OPTIONS arg may contain one or more of the following bits:
-
- DMGL_ANSI ANSI qualifiers such as `const' and `void' are
- included.
- DMGL_PARAMS Function parameters are included.
-
- For example,
-
- cplus_demangle ("foo__1Ai", DMGL_PARAMS) => "A::foo(int)"
- cplus_demangle ("foo__1Ai", DMGL_PARAMS | DMGL_ANSI) => "A::foo(int)"
- cplus_demangle ("foo__1Ai", 0) => "A::foo"
-
- cplus_demangle ("foo__1Afe", DMGL_PARAMS) => "A::foo(float,...)"
- cplus_demangle ("foo__1Afe", DMGL_PARAMS | DMGL_ANSI)=> "A::foo(float,...)"
- cplus_demangle ("foo__1Afe", 0) => "A::foo"
-
Note that any leading underscores, or other such characters prepended by
the compilation system, are presumed to have already been stripped from
MANGLED. */
ML_(cplus_demangle) (const char *mangled, int options)
{
char *ret;
- struct work_stuff work[1];
if (current_demangling_style == no_demangling)
return xstrdup (mangled);
- memset ((char *) work, 0, sizeof (work));
- work->options = options;
- if ((work->options & DMGL_STYLE_MASK) == 0)
- work->options |= (int) current_demangling_style & DMGL_STYLE_MASK;
+ if ((options & DMGL_STYLE_MASK) == 0)
+ options |= (int) current_demangling_style & DMGL_STYLE_MASK;
- /* The V3 ABI demangling is implemented elsewhere. */
- if (GNU_V3_DEMANGLING || RUST_DEMANGLING || AUTO_DEMANGLING)
+ /* The Rust demangling is implemented elsewhere.
+ Legacy Rust symbols overlap with GNU_V3, so try Rust first. */
+ if (RUST_DEMANGLING || AUTO_DEMANGLING)
{
- ret = cplus_demangle_v3 (mangled, work->options);
- if (GNU_V3_DEMANGLING)
- return ret;
-
- if (ret)
- {
- /* Rust symbols are GNU_V3 mangled plus some extra subtitutions.
- The subtitutions are always smaller, so do in place changes. */
- if (rust_is_mangled (ret))
- rust_demangle_sym (ret);
- else if (RUST_DEMANGLING)
- {
- free (ret);
- ret = NULL;
- }
- }
-
+ ret = rust_demangle (mangled, options);
if (ret || RUST_DEMANGLING)
+ return ret;
+ }
+
+ /* The V3 ABI demangling is implemented elsewhere. */
+ if (GNU_V3_DEMANGLING || AUTO_DEMANGLING)
+ {
+ ret = cplus_demangle_v3 (mangled, options);
+ if (ret || GNU_V3_DEMANGLING)
return ret;
}
return ret;
}
- ret = internal_cplus_demangle (work, mangled);
- squangle_mop_up (work);
return (ret);
}
-char *
-rust_demangle (const char *mangled, int options)
-{
- /* Rust symbols are GNU_V3 mangled plus some extra subtitutions. */
- char *ret = cplus_demangle_v3 (mangled, options);
-
- /* The Rust subtitutions are always smaller, so do in place changes. */
- if (ret != NULL)
- {
- if (rust_is_mangled (ret))
- rust_demangle_sym (ret);
- else
- {
- free (ret);
- ret = NULL;
- }
- }
-
- return ret;
-}
-
/* Demangle ada names. The encoding is documented in gcc/ada/exp_dbug.ads. */
char *
return demangled;
}
-
-/* This function performs most of what cplus_demangle use to do, but
- to be able to demangle a name with a B, K or n code, we need to
- have a longer term memory of what types have been seen. The original
- now initializes and cleans up the squangle code info, while internal
- calls go directly to this routine to avoid resetting that info. */
-
-static char *
-internal_cplus_demangle (struct work_stuff *work, const char *mangled)
-{
-
- string decl;
- int success = 0;
- char *demangled = NULL;
- int s1, s2, s3, s4;
- s1 = work->constructor;
- s2 = work->destructor;
- s3 = work->static_type;
- s4 = work->type_quals;
- work->constructor = work->destructor = 0;
- work->type_quals = TYPE_UNQUALIFIED;
- work->dllimported = 0;
-
- if ((mangled != NULL) && (*mangled != '\0'))
- {
- string_init (&decl);
-
- /* First check to see if gnu style demangling is active and if the
- string to be demangled contains a CPLUS_MARKER. If so, attempt to
- recognize one of the gnu special forms rather than looking for a
- standard prefix. In particular, don't worry about whether there
- is a "__" string in the mangled string. Consider "_$_5__foo" for
- example. */
-
- if ((AUTO_DEMANGLING || GNU_DEMANGLING))
- {
- success = gnu_special (work, &mangled, &decl);
- if (!success)
- {
- delete_work_stuff (work);
- string_delete (&decl);
- }
- }
- if (!success)
- {
- success = demangle_prefix (work, &mangled, &decl);
- }
- if (success && (*mangled != '\0'))
- {
- success = demangle_signature (work, &mangled, &decl);
- }
- if (work->constructor == 2)
- {
- string_prepend (&decl, "global constructors keyed to ");
- work->constructor = 0;
- }
- else if (work->destructor == 2)
- {
- string_prepend (&decl, "global destructors keyed to ");
- work->destructor = 0;
- }
- else if (work->dllimported == 1)
- {
- string_prepend (&decl, "import stub for ");
- work->dllimported = 0;
- }
- demangled = mop_up (work, &decl, success);
- }
- work->constructor = s1;
- work->destructor = s2;
- work->static_type = s3;
- work->type_quals = s4;
- return demangled;
-}
-
-
-/* Clear out and squangling related storage */
-static void
-squangle_mop_up (struct work_stuff *work)
-{
- /* clean up the B and K type mangling types. */
- forget_B_and_K_types (work);
- if (work -> btypevec != NULL)
- {
- free ((char *) work -> btypevec);
- work->btypevec = NULL;
- work->bsize = 0;
- }
- if (work -> ktypevec != NULL)
- {
- free ((char *) work -> ktypevec);
- work->ktypevec = NULL;
- work->ksize = 0;
- }
-}
-
-
-/* Copy the work state and storage. */
-
-static void
-work_stuff_copy_to_from (struct work_stuff *to, struct work_stuff *from)
-{
- int i;
-
- delete_work_stuff (to);
-
- /* Shallow-copy scalars. */
- memcpy (to, from, sizeof (*to));
-
- /* Deep-copy dynamic storage. */
- if (from->typevec_size)
- to->typevec = XNEWVEC (char *, from->typevec_size);
-
- for (i = 0; i < from->ntypes; i++)
- {
- int len = strlen (from->typevec[i]) + 1;
-
- to->typevec[i] = XNEWVEC (char, len);
- memcpy (to->typevec[i], from->typevec[i], len);
- }
-
- if (from->ksize)
- to->ktypevec = XNEWVEC (char *, from->ksize);
-
- for (i = 0; i < from->numk; i++)
- {
- int len = strlen (from->ktypevec[i]) + 1;
-
- to->ktypevec[i] = XNEWVEC (char, len);
- memcpy (to->ktypevec[i], from->ktypevec[i], len);
- }
-
- if (from->bsize)
- to->btypevec = XNEWVEC (char *, from->bsize);
-
- for (i = 0; i < from->numb; i++)
- {
- int len = strlen (from->btypevec[i]) + 1;
-
- to->btypevec[i] = XNEWVEC (char , len);
- memcpy (to->btypevec[i], from->btypevec[i], len);
- }
-
- if (from->proctypevec)
- to->proctypevec =
- XDUPVEC (int, from->proctypevec, from->proctypevec_size);
-
- if (from->ntmpl_args)
- to->tmpl_argvec = XNEWVEC (char *, from->ntmpl_args);
-
- for (i = 0; i < from->ntmpl_args; i++)
- {
- int len = strlen (from->tmpl_argvec[i]) + 1;
-
- to->tmpl_argvec[i] = XNEWVEC (char, len);
- memcpy (to->tmpl_argvec[i], from->tmpl_argvec[i], len);
- }
-
- if (from->previous_argument)
- {
- to->previous_argument = XNEW (string);
- string_init (to->previous_argument);
- string_appends (to->previous_argument, from->previous_argument);
- }
-}
-
-
-/* Delete dynamic stuff in work_stuff that is not to be re-used. */
-
-static void
-delete_non_B_K_work_stuff (struct work_stuff *work)
-{
- /* Discard the remembered types, if any. */
-
- forget_types (work);
- if (work->typevec != NULL)
- {
- free ((char *) work->typevec);
- work->typevec = NULL;
- work->typevec_size = 0;
- }
- if (work->proctypevec != NULL)
- {
- free (work->proctypevec);
- work->proctypevec = NULL;
- work->proctypevec_size = 0;
- }
- if (work->tmpl_argvec)
- {
- int i;
-
- for (i = 0; i < work->ntmpl_args; i++)
- free ((char*) work->tmpl_argvec[i]);
-
- free ((char*) work->tmpl_argvec);
- work->tmpl_argvec = NULL;
- }
- if (work->previous_argument)
- {
- string_delete (work->previous_argument);
- free ((char*) work->previous_argument);
- work->previous_argument = NULL;
- }
-}
-
-
-/* Delete all dynamic storage in work_stuff. */
-static void
-delete_work_stuff (struct work_stuff *work)
-{
- delete_non_B_K_work_stuff (work);
- squangle_mop_up (work);
-}
-
-
-/* Clear out any mangled storage */
-
-static char *
-mop_up (struct work_stuff *work, string *declp, int success)
-{
- char *demangled = NULL;
-
- delete_non_B_K_work_stuff (work);
-
- /* If demangling was successful, ensure that the demangled string is null
- terminated and return it. Otherwise, free the demangling decl. */
-
- if (!success)
- {
- string_delete (declp);
- }
- else
- {
- string_appendn (declp, "", 1);
- demangled = declp->b;
- }
- return (demangled);
-}
-
-/*
-
-LOCAL FUNCTION
-
- demangle_signature -- demangle the signature part of a mangled name
-
-SYNOPSIS
-
- static int
- demangle_signature (struct work_stuff *work, const char **mangled,
- string *declp);
-
-DESCRIPTION
-
- Consume and demangle the signature portion of the mangled name.
-
- DECLP is the string where demangled output is being built. At
- entry it contains the demangled root name from the mangled name
- prefix. I.E. either a demangled operator name or the root function
- name. In some special cases, it may contain nothing.
-
- *MANGLED points to the current unconsumed location in the mangled
- name. As tokens are consumed and demangling is performed, the
- pointer is updated to continuously point at the next token to
- be consumed.
-
- Demangling GNU style mangled names is nasty because there is no
- explicit token that marks the start of the outermost function
- argument list. */
-
-static int
-demangle_signature (struct work_stuff *work,
- const char **mangled, string *declp)
-{
- int success = 1;
- int func_done = 0;
- int expect_func = 0;
- int expect_return_type = 0;
- const char *oldmangled = NULL;
- string trawname;
- string tname;
-
- while (success && (**mangled != '\0'))
- {
- switch (**mangled)
- {
- case 'Q':
- oldmangled = *mangled;
- success = demangle_qualified (work, mangled, declp, 1, 0);
- if (success)
- remember_type (work, oldmangled, *mangled - oldmangled);
- if (AUTO_DEMANGLING || GNU_DEMANGLING)
- expect_func = 1;
- oldmangled = NULL;
- break;
-
- case 'K':
- //oldmangled = *mangled;
- success = demangle_qualified (work, mangled, declp, 1, 0);
- if (AUTO_DEMANGLING || GNU_DEMANGLING)
- {
- expect_func = 1;
- }
- oldmangled = NULL;
- break;
-
- case 'S':
- /* Static member function */
- if (oldmangled == NULL)
- {
- oldmangled = *mangled;
- }
- (*mangled)++;
- work -> static_type = 1;
- break;
-
- case 'C':
- case 'V':
- case 'u':
- work->type_quals |= code_for_qualifier (**mangled);
-
- /* a qualified member function */
- if (oldmangled == NULL)
- oldmangled = *mangled;
- (*mangled)++;
- break;
-
- case 'L':
- /* Local class name follows after "Lnnn_" */
- if (HP_DEMANGLING)
- {
- while (**mangled && (**mangled != '_'))
- (*mangled)++;
- if (!**mangled)
- success = 0;
- else
- (*mangled)++;
- }
- else
- success = 0;
- break;
-
- case '0': case '1': case '2': case '3': case '4':
- case '5': case '6': case '7': case '8': case '9':
- if (oldmangled == NULL)
- {
- oldmangled = *mangled;
- }
- work->temp_start = -1; /* uppermost call to demangle_class */
- success = demangle_class (work, mangled, declp);
- if (success)
- {
- remember_type (work, oldmangled, *mangled - oldmangled);
- }
- if (AUTO_DEMANGLING || GNU_DEMANGLING || EDG_DEMANGLING)
- {
- /* EDG and others will have the "F", so we let the loop cycle
- if we are looking at one. */
- if (**mangled != 'F')
- expect_func = 1;
- }
- oldmangled = NULL;
- break;
-
- case 'B':
- {
- string s;
- success = do_type (work, mangled, &s);
- if (success)
- {
- string_append (&s, SCOPE_STRING (work));
- string_prepends (declp, &s);
- string_delete (&s);
- }
- oldmangled = NULL;
- expect_func = 1;
- }
- break;
-
- case 'F':
- /* Function */
- /* ARM/HP style demangling includes a specific 'F' character after
- the class name. For GNU style, it is just implied. So we can
- safely just consume any 'F' at this point and be compatible
- with either style. */
-
- oldmangled = NULL;
- func_done = 1;
- (*mangled)++;
-
- /* For lucid/ARM/HP style we have to forget any types we might
- have remembered up to this point, since they were not argument
- types. GNU style considers all types seen as available for
- back references. See comment in demangle_args() */
-
- if (LUCID_DEMANGLING || ARM_DEMANGLING || HP_DEMANGLING || EDG_DEMANGLING)
- {
- forget_types (work);
- }
- success = demangle_args (work, mangled, declp);
- /* After picking off the function args, we expect to either
- find the function return type (preceded by an '_') or the
- end of the string. */
- if (success && (AUTO_DEMANGLING || EDG_DEMANGLING) && **mangled == '_')
- {
- ++(*mangled);
- /* At this level, we do not care about the return type. */
- success = do_type (work, mangled, &tname);
- string_delete (&tname);
- }
-
- break;
-
- case 't':
- /* G++ Template */
- string_init(&trawname);
- string_init(&tname);
- if (oldmangled == NULL)
- {
- oldmangled = *mangled;
- }
- success = demangle_template (work, mangled, &tname,
- &trawname, 1, 1);
- if (success)
- {
- remember_type (work, oldmangled, *mangled - oldmangled);
- }
- string_append (&tname, SCOPE_STRING (work));
-
- string_prepends(declp, &tname);
- if (work -> destructor & 1)
- {
- string_prepend (&trawname, "~");
- string_appends (declp, &trawname);
- work->destructor -= 1;
- }
- if ((work->constructor & 1) || (work->destructor & 1))
- {
- string_appends (declp, &trawname);
- work->constructor -= 1;
- }
- string_delete(&trawname);
- string_delete(&tname);
- oldmangled = NULL;
- expect_func = 1;
- break;
-
- case '_':
- if ((AUTO_DEMANGLING || GNU_DEMANGLING) && expect_return_type)
- {
- /* Read the return type. */
- string return_type;
-
- (*mangled)++;
- success = do_type (work, mangled, &return_type);
- APPEND_BLANK (&return_type);
-
- string_prepends (declp, &return_type);
- string_delete (&return_type);
- break;
- }
- else
- /* At the outermost level, we cannot have a return type specified,
- so if we run into another '_' at this point we are dealing with
- a mangled name that is either bogus, or has been mangled by
- some algorithm we don't know how to deal with. So just
- reject the entire demangling. */
- /* However, "_nnn" is an expected suffix for alternate entry point
- numbered nnn for a function, with HP aCC, so skip over that
- without reporting failure. pai/1997-09-04 */
- if (HP_DEMANGLING)
- {
- (*mangled)++;
- while (**mangled && ISDIGIT ((unsigned char)**mangled))
- (*mangled)++;
- }
- else
- success = 0;
- break;
-
- case 'H':
- if (AUTO_DEMANGLING || GNU_DEMANGLING)
- {
- /* A G++ template function. Read the template arguments. */
- success = demangle_template (work, mangled, declp, 0, 0,
- 0);
- if (!(work->constructor & 1))
- expect_return_type = 1;
- if (!**mangled)
- success = 0;
- else
- (*mangled)++;
- break;
- }
- /* fall through */
-
- default:
- if (AUTO_DEMANGLING || GNU_DEMANGLING)
- {
- /* Assume we have stumbled onto the first outermost function
- argument token, and start processing args. */
- func_done = 1;
- success = demangle_args (work, mangled, declp);
- }
- else
- {
- /* Non-GNU demanglers use a specific token to mark the start
- of the outermost function argument tokens. Typically 'F',
- for ARM/HP-demangling, for example. So if we find something
- we are not prepared for, it must be an error. */
- success = 0;
- }
- break;
- }
- /*
- if (AUTO_DEMANGLING || GNU_DEMANGLING)
- */
- {
- if (success && expect_func)
- {
- func_done = 1;
- if (LUCID_DEMANGLING || ARM_DEMANGLING || EDG_DEMANGLING)
- {
- forget_types (work);
- }
- success = demangle_args (work, mangled, declp);
- /* Since template include the mangling of their return types,
- we must set expect_func to 0 so that we don't try do
- demangle more arguments the next time we get here. */
- expect_func = 0;
- }
- }
- }
- if (success && !func_done)
- {
- if (AUTO_DEMANGLING || GNU_DEMANGLING)
- {
- /* With GNU style demangling, bar__3foo is 'foo::bar(void)', and
- bar__3fooi is 'foo::bar(int)'. We get here when we find the
- first case, and need to ensure that the '(void)' gets added to
- the current declp. Note that with ARM/HP, the first case
- represents the name of a static data member 'foo::bar',
- which is in the current declp, so we leave it alone. */
- success = demangle_args (work, mangled, declp);
- }
- }
- if (success && PRINT_ARG_TYPES)
- {
- if (work->static_type)
- string_append (declp, " static");
- if (work->type_quals != TYPE_UNQUALIFIED)
- {
- APPEND_BLANK (declp);
- string_append (declp, qualifier_string (work->type_quals));
- }
- }
-
- return (success);
-}
-
-#if 0
-
-static int
-demangle_method_args (struct work_stuff *work, const char **mangled,
- string *declp)
-{
- int success = 0;
-
- if (work -> static_type)
- {
- string_append (declp, *mangled + 1);
- *mangled += strlen (*mangled);
- success = 1;
- }
- else
- {
- success = demangle_args (work, mangled, declp);
- }
- return (success);
-}
-
-#endif
-
-static int
-demangle_template_template_parm (struct work_stuff *work,
- const char **mangled, string *tname)
-{
- int i;
- int r;
- int need_comma = 0;
- int success = 1;
- string temp;
-
- string_append (tname, "template <");
- /* get size of template parameter list */
- if (get_count (mangled, &r))
- {
- for (i = 0; i < r; i++)
- {
- if (need_comma)
- {
- string_append (tname, ", ");
- }
-
- /* Z for type parameters */
- if (**mangled == 'Z')
- {
- (*mangled)++;
- string_append (tname, "class");
- }
- /* z for template parameters */
- else if (**mangled == 'z')
- {
- (*mangled)++;
- success =
- demangle_template_template_parm (work, mangled, tname);
- if (!success)
- {
- break;
- }
- }
- else
- {
- /* temp is initialized in do_type */
- success = do_type (work, mangled, &temp);
- if (success)
- {
- string_appends (tname, &temp);
- }
- string_delete(&temp);
- if (!success)
- {
- break;
- }
- }
- need_comma = 1;
- }
-
- }
- if (tname->p[-1] == '>')
- string_append (tname, " ");
- string_append (tname, "> class");
- return (success);
-}
-
-static int
-demangle_expression (struct work_stuff *work, const char **mangled,
- string *s, type_kind_t tk)
-{
- int need_operator = 0;
- int success;
-
- success = 1;
- string_appendn (s, "(", 1);
- (*mangled)++;
- while (success && **mangled != 'W' && **mangled != '\0')
- {
- if (need_operator)
- {
- size_t i;
- size_t len;
-
- success = 0;
-
- len = strlen (*mangled);
-
- for (i = 0; i < ARRAY_SIZE (optable); ++i)
- {
- size_t l = strlen (optable[i].in);
-
- if (l <= len
- && memcmp (optable[i].in, *mangled, l) == 0)
- {
- string_appendn (s, " ", 1);
- string_append (s, optable[i].out);
- string_appendn (s, " ", 1);
- success = 1;
- (*mangled) += l;
- break;
- }
- }
-
- if (!success)
- break;
- }
- else
- need_operator = 1;
-
- success = demangle_template_value_parm (work, mangled, s, tk);
- }
-
- if (**mangled != 'W')
- success = 0;
- else
- {
- string_appendn (s, ")", 1);
- (*mangled)++;
- }
-
- return success;
-}
-
-static int
-demangle_integral_value (struct work_stuff *work,
- const char **mangled, string *s)
-{
- int success;
-
- if (**mangled == 'E')
- success = demangle_expression (work, mangled, s, tk_integral);
- else if (**mangled == 'Q' || **mangled == 'K')
- success = demangle_qualified (work, mangled, s, 0, 1);
- else
- {
- int value;
-
- /* By default, we let the number decide whether we shall consume an
- underscore. */
- int multidigit_without_leading_underscore = 0;
- int leave_following_underscore = 0;
-
- success = 0;
-
- if (**mangled == '_')
- {
- if (mangled[0][1] == 'm')
- {
- /* Since consume_count_with_underscores does not handle the
- `m'-prefix we must do it here, using consume_count and
- adjusting underscores: we have to consume the underscore
- matching the prepended one. */
- multidigit_without_leading_underscore = 1;
- string_appendn (s, "-", 1);
- (*mangled) += 2;
- }
- else
- {
- /* Do not consume a following underscore;
- consume_count_with_underscores will consume what
- should be consumed. */
- leave_following_underscore = 1;
- }
- }
- else
- {
- /* Negative numbers are indicated with a leading `m'. */
- if (**mangled == 'm')
- {
- string_appendn (s, "-", 1);
- (*mangled)++;
- }
- /* Since consume_count_with_underscores does not handle
- multi-digit numbers that do not start with an underscore,
- and this number can be an integer template parameter,
- we have to call consume_count. */
- multidigit_without_leading_underscore = 1;
- /* These multi-digit numbers never end on an underscore,
- so if there is one then don't eat it. */
- leave_following_underscore = 1;
- }
-
- /* We must call consume_count if we expect to remove a trailing
- underscore, since consume_count_with_underscores expects
- the leading underscore (that we consumed) if it is to handle
- multi-digit numbers. */
- if (multidigit_without_leading_underscore)
- value = consume_count (mangled);
- else
- value = consume_count_with_underscores (mangled);
-
- if (value != -1)
- {
- char buf[INTBUF_SIZE];
- sprintf (buf, "%d", value);
- string_append (s, buf);
-
- /* Numbers not otherwise delimited, might have an underscore
- appended as a delimiter, which we should skip.
-
- ??? This used to always remove a following underscore, which
- is wrong. If other (arbitrary) cases are followed by an
- underscore, we need to do something more radical. */
-
- if ((value > 9 || multidigit_without_leading_underscore)
- && ! leave_following_underscore
- && **mangled == '_')
- (*mangled)++;
-
- /* All is well. */
- success = 1;
- }
- }
-
- return success;
-}
-
-/* Demangle the real value in MANGLED. */
-
-static int
-demangle_real_value (struct work_stuff *work,
- const char **mangled, string *s)
-{
- if (**mangled == 'E')
- return demangle_expression (work, mangled, s, tk_real);
-
- if (**mangled == 'm')
- {
- string_appendn (s, "-", 1);
- (*mangled)++;
- }
- while (ISDIGIT ((unsigned char)**mangled))
- {
- string_appendn (s, *mangled, 1);
- (*mangled)++;
- }
- if (**mangled == '.') /* fraction */
- {
- string_appendn (s, ".", 1);
- (*mangled)++;
- while (ISDIGIT ((unsigned char)**mangled))
- {
- string_appendn (s, *mangled, 1);
- (*mangled)++;
- }
- }
- if (**mangled == 'e') /* exponent */
- {
- string_appendn (s, "e", 1);
- (*mangled)++;
- while (ISDIGIT ((unsigned char)**mangled))
- {
- string_appendn (s, *mangled, 1);
- (*mangled)++;
- }
- }
-
- return 1;
-}
-
-static int
-demangle_template_value_parm (struct work_stuff *work, const char **mangled,
- string *s, type_kind_t tk)
-{
- int success = 1;
-
- if (**mangled == 'Y')
- {
- /* The next argument is a template parameter. */
- int idx;
-
- (*mangled)++;
- idx = consume_count_with_underscores (mangled);
- if (idx == -1
- || (work->tmpl_argvec && idx >= work->ntmpl_args)
- || consume_count_with_underscores (mangled) == -1)
- return -1;
- if (work->tmpl_argvec)
- string_append (s, work->tmpl_argvec[idx]);
- else
- string_append_template_idx (s, idx);
- }
- else if (tk == tk_integral)
- success = demangle_integral_value (work, mangled, s);
- else if (tk == tk_char)
- {
- char tmp[2];
- int val;
- if (**mangled == 'm')
- {
- string_appendn (s, "-", 1);
- (*mangled)++;
- }
- string_appendn (s, "'", 1);
- val = consume_count(mangled);
- if (val <= 0)
- success = 0;
- else
- {
- tmp[0] = (char)val;
- tmp[1] = '\0';
- string_appendn (s, &tmp[0], 1);
- string_appendn (s, "'", 1);
- }
- }
- else if (tk == tk_bool)
- {
- int val = consume_count (mangled);
- if (val == 0)
- string_appendn (s, "false", 5);
- else if (val == 1)
- string_appendn (s, "true", 4);
- else
- success = 0;
- }
- else if (tk == tk_real)
- success = demangle_real_value (work, mangled, s);
- else if (tk == tk_pointer || tk == tk_reference
- || tk == tk_rvalue_reference)
- {
- if (**mangled == 'Q')
- success = demangle_qualified (work, mangled, s,
- /*isfuncname=*/0,
- /*append=*/1);
- else
- {
- int symbol_len = consume_count (mangled);
- if (symbol_len == -1
- || symbol_len > (long) strlen (*mangled))
- return -1;
- if (symbol_len == 0)
- string_appendn (s, "0", 1);
- else
- {
- char *p = XNEWVEC (char, symbol_len + 1), *q;
- strncpy (p, *mangled, symbol_len);
- p [symbol_len] = '\0';
- /* We use cplus_demangle here, rather than
- internal_cplus_demangle, because the name of the entity
- mangled here does not make use of any of the squangling
- or type-code information we have built up thus far; it is
- mangled independently. */
- q = ML_(cplus_demangle) (p, work->options);
- if (tk == tk_pointer)
- string_appendn (s, "&", 1);
- /* FIXME: Pointer-to-member constants should get a
- qualifying class name here. */
- if (q)
- {
- string_append (s, q);
- free (q);
- }
- else
- string_append (s, p);
- free (p);
- }
- *mangled += symbol_len;
- }
- }
-
- return success;
-}
-
-/* Demangle the template name in MANGLED. The full name of the
- template (e.g., S<int>) is placed in TNAME. The name without the
- template parameters (e.g. S) is placed in TRAWNAME if TRAWNAME is
- non-NULL. If IS_TYPE is nonzero, this template is a type template,
- not a function template. If both IS_TYPE and REMEMBER are nonzero,
- the template is remembered in the list of back-referenceable
- types. */
-
-static int
-demangle_template (struct work_stuff *work, const char **mangled,
- string *tname, string *trawname,
- int is_type, int remember)
-{
- int i;
- int r;
- int need_comma = 0;
- int success = 0;
- int is_java_array = 0;
- string temp;
-
- (*mangled)++;
- if (is_type)
- {
- /* get template name */
- if (**mangled == 'z')
- {
- int idx;
- (*mangled)++;
- if (**mangled == '\0')
- return (0);
- (*mangled)++;
-
- idx = consume_count_with_underscores (mangled);
- if (idx == -1
- || (work->tmpl_argvec && idx >= work->ntmpl_args)
- || consume_count_with_underscores (mangled) == -1)
- return (0);
-
- if (work->tmpl_argvec)
- {
- string_append (tname, work->tmpl_argvec[idx]);
- if (trawname)
- string_append (trawname, work->tmpl_argvec[idx]);
- }
- else
- {
- string_append_template_idx (tname, idx);
- if (trawname)
- string_append_template_idx (trawname, idx);
- }
- }
- else
- {
- if ((r = consume_count (mangled)) <= 0
- || (int) strlen (*mangled) < r)
- {
- return (0);
- }
- is_java_array = (work -> options & DMGL_JAVA)
- && strncmp (*mangled, "JArray1Z", 8) == 0;
- if (! is_java_array)
- {
- string_appendn (tname, *mangled, r);
- }
- if (trawname)
- string_appendn (trawname, *mangled, r);
- *mangled += r;
- }
- }
- if (!is_java_array)
- string_append (tname, "<");
- /* get size of template parameter list */
- if (!get_count (mangled, &r))
- {
- return (0);
- }
- if (!is_type)
- {
- /* Create an array for saving the template argument values. */
- work->tmpl_argvec = XNEWVEC (char *, r);
- work->ntmpl_args = r;
- for (i = 0; i < r; i++)
- work->tmpl_argvec[i] = 0;
- }
- for (i = 0; i < r; i++)
- {
- if (need_comma)
- {
- string_append (tname, ", ");
- }
- /* Z for type parameters */
- if (**mangled == 'Z')
- {
- (*mangled)++;
- /* temp is initialized in do_type */
- success = do_type (work, mangled, &temp);
- if (success)
- {
- string_appends (tname, &temp);
-
- if (!is_type)
- {
- /* Save the template argument. */
- int len = temp.p - temp.b;
- work->tmpl_argvec[i] = XNEWVEC (char, len + 1);
- memcpy (work->tmpl_argvec[i], temp.b, len);
- work->tmpl_argvec[i][len] = '\0';
- }
- }
- string_delete(&temp);
- if (!success)
- {
- break;
- }
- }
- /* z for template parameters */
- else if (**mangled == 'z')
- {
- int r2;
- (*mangled)++;
- success = demangle_template_template_parm (work, mangled, tname);
-
- if (success
- && (r2 = consume_count (mangled)) > 0
- && (int) strlen (*mangled) >= r2)
- {
- string_append (tname, " ");
- string_appendn (tname, *mangled, r2);
- if (!is_type)
- {
- /* Save the template argument. */
- int len = r2;
- work->tmpl_argvec[i] = XNEWVEC (char, len + 1);
- memcpy (work->tmpl_argvec[i], *mangled, len);
- work->tmpl_argvec[i][len] = '\0';
- }
- *mangled += r2;
- }
- if (!success)
- {
- break;
- }
- }
- else
- {
- string param;
- string* s;
-
- /* otherwise, value parameter */
-
- /* temp is initialized in do_type */
- success = do_type (work, mangled, &temp);
- string_delete(&temp);
- if (!success)
- break;
-
- if (!is_type)
- {
- s = ¶m;
- string_init (s);
- }
- else
- s = tname;
-
- success = demangle_template_value_parm (work, mangled, s,
- (type_kind_t) success);
-
- if (!success)
- {
- if (!is_type)
- string_delete (s);
- success = 0;
- break;
- }
-
- if (!is_type)
- {
- int len = s->p - s->b;
- work->tmpl_argvec[i] = XNEWVEC (char, len + 1);
- memcpy (work->tmpl_argvec[i], s->b, len);
- work->tmpl_argvec[i][len] = '\0';
-
- string_appends (tname, s);
- string_delete (s);
- }
- }
- need_comma = 1;
- }
- if (is_java_array)
- {
- string_append (tname, "[]");
- }
- else
- {
- if (tname->p[-1] == '>')
- string_append (tname, " ");
- string_append (tname, ">");
- }
-
- if (is_type && remember)
- {
- const int bindex = register_Btype (work);
- remember_Btype (work, tname->b, LEN_STRING (tname), bindex);
- }
-
- /*
- if (work -> static_type)
- {
- string_append (declp, *mangled + 1);
- *mangled += strlen (*mangled);
- success = 1;
- }
- else
- {
- success = demangle_args (work, mangled, declp);
- }
- }
- */
- return (success);
-}
-
-static int
-arm_pt (const char *mangled,
- int n, const char **anchor, const char **args)
-{
- /* Check if ARM template with "__pt__" in it ("parameterized type") */
- /* Allow HP also here, because HP's cfront compiler follows ARM to some extent */
- if ((ARM_DEMANGLING || HP_DEMANGLING) && (*anchor = strstr (mangled, "__pt__")))
- {
- int len;
- *args = *anchor + 6;
- len = consume_count (args);
- if (len == -1)
- return 0;
- if (*args + len == mangled + n && **args == '_')
- {
- ++*args;
- return 1;
- }
- }
- if (AUTO_DEMANGLING || EDG_DEMANGLING)
- {
- if ((*anchor = strstr (mangled, "__tm__"))
- || (*anchor = strstr (mangled, "__ps__"))
- || (*anchor = strstr (mangled, "__pt__")))
- {
- int len;
- *args = *anchor + 6;
- len = consume_count (args);
- if (len == -1)
- return 0;
- if (*args + len == mangled + n && **args == '_')
- {
- ++*args;
- return 1;
- }
- }
- else if ((*anchor = strstr (mangled, "__S")))
- {
- int len;
- *args = *anchor + 3;
- len = consume_count (args);
- if (len == -1)
- return 0;
- if (*args + len == mangled + n && **args == '_')
- {
- ++*args;
- return 1;
- }
- }
- }
-
- return 0;
-}
-
-static void
-demangle_arm_hp_template (struct work_stuff *work, const char **mangled,
- int n, string *declp)
-{
- const char *p;
- const char *args;
- const char *e = *mangled + n;
- string arg;
-
- /* Check for HP aCC template spec: classXt1t2 where t1, t2 are
- template args */
- if (HP_DEMANGLING && ((*mangled)[n] == 'X'))
- {
- char *start_spec_args = NULL;
- int hold_options;
-
- /* First check for and omit template specialization pseudo-arguments,
- such as in "Spec<#1,#1.*>" */
- start_spec_args = strchr (*mangled, '<');
- if (start_spec_args && (start_spec_args - *mangled < n))
- string_appendn (declp, *mangled, start_spec_args - *mangled);
- else
- string_appendn (declp, *mangled, n);
- (*mangled) += n + 1;
- string_init (&arg);
- if (work->temp_start == -1) /* non-recursive call */
- work->temp_start = declp->p - declp->b;
-
- /* We want to unconditionally demangle parameter types in
- template parameters. */
- hold_options = work->options;
- work->options |= DMGL_PARAMS;
-
- string_append (declp, "<");
- while (1)
- {
- string_delete (&arg);
- switch (**mangled)
- {
- case 'T':
- /* 'T' signals a type parameter */
- (*mangled)++;
- if (!do_type (work, mangled, &arg))
- goto hpacc_template_args_done;
- break;
-
- case 'U':
- case 'S':
- /* 'U' or 'S' signals an integral value */
- if (!do_hpacc_template_const_value (work, mangled, &arg))
- goto hpacc_template_args_done;
- break;
-
- case 'A':
- /* 'A' signals a named constant expression (literal) */
- if (!do_hpacc_template_literal (work, mangled, &arg))
- goto hpacc_template_args_done;
- break;
-
- default:
- /* Today, 1997-09-03, we have only the above types
- of template parameters */
- /* FIXME: maybe this should fail and return null */
- goto hpacc_template_args_done;
- }
- string_appends (declp, &arg);
- /* Check if we're at the end of template args.
- 0 if at end of static member of template class,
- _ if done with template args for a function */
- if ((**mangled == '\000') || (**mangled == '_'))
- break;
- else
- string_append (declp, ",");
- }
- hpacc_template_args_done:
- string_append (declp, ">");
- string_delete (&arg);
- if (**mangled == '_')
- (*mangled)++;
- work->options = hold_options;
- return;
- }
- /* ARM template? (Also handles HP cfront extensions) */
- else if (arm_pt (*mangled, n, &p, &args))
- {
- int hold_options;
- string type_str;
-
- string_init (&arg);
- string_appendn (declp, *mangled, p - *mangled);
- if (work->temp_start == -1) /* non-recursive call */
- work->temp_start = declp->p - declp->b;
-
- /* We want to unconditionally demangle parameter types in
- template parameters. */
- hold_options = work->options;
- work->options |= DMGL_PARAMS;
-
- string_append (declp, "<");
- /* should do error checking here */
- while (args < e) {
- string_delete (&arg);
-
- /* Check for type or literal here */
- switch (*args)
- {
- /* HP cfront extensions to ARM for template args */
- /* spec: Xt1Lv1 where t1 is a type, v1 is a literal value */
- /* FIXME: We handle only numeric literals for HP cfront */
- case 'X':
- /* A typed constant value follows */
- args++;
- if (!do_type (work, &args, &type_str))
- goto cfront_template_args_done;
- string_append (&arg, "(");
- string_appends (&arg, &type_str);
- string_delete (&type_str);
- string_append (&arg, ")");
- if (*args != 'L')
- goto cfront_template_args_done;
- args++;
- /* Now snarf a literal value following 'L' */
- if (!snarf_numeric_literal (&args, &arg))
- goto cfront_template_args_done;
- break;
-
- case 'L':
- /* Snarf a literal following 'L' */
- args++;
- if (!snarf_numeric_literal (&args, &arg))
- goto cfront_template_args_done;
- break;
- default:
- /* Not handling other HP cfront stuff */
- {
- const char* old_args = args;
- if (!do_type (work, &args, &arg))
- goto cfront_template_args_done;
-
- /* Fail if we didn't make any progress: prevent infinite loop. */
- if (args == old_args)
- {
- work->options = hold_options;
- return;
- }
- }
- }
- string_appends (declp, &arg);
- string_append (declp, ",");
- }
- cfront_template_args_done:
- string_delete (&arg);
- if (args >= e)
- --declp->p; /* remove extra comma */
- string_append (declp, ">");
- work->options = hold_options;
- }
- else if (n>10 && strncmp (*mangled, "_GLOBAL_", 8) == 0
- && (*mangled)[9] == 'N'
- && (*mangled)[8] == (*mangled)[10]
- && strchr (cplus_markers, (*mangled)[8]))
- {
- /* A member of the anonymous namespace. */
- string_append (declp, "{anonymous}");
- }
- else
- {
- if (work->temp_start == -1) /* non-recursive call only */
- work->temp_start = 0; /* disable in recursive calls */
- string_appendn (declp, *mangled, n);
- }
- *mangled += n;
-}
-
-/* Extract a class name, possibly a template with arguments, from the
- mangled string; qualifiers, local class indicators, etc. have
- already been dealt with */
-
-static int
-demangle_class_name (struct work_stuff *work, const char **mangled,
- string *declp)
-{
- int n;
- int success = 0;
-
- n = consume_count (mangled);
- if (n == -1)
- return 0;
- if ((int) strlen (*mangled) >= n)
- {
- demangle_arm_hp_template (work, mangled, n, declp);
- success = 1;
- }
-
- return (success);
-}
-
-/*
-
-LOCAL FUNCTION
-
- demangle_class -- demangle a mangled class sequence
-
-SYNOPSIS
-
- static int
- demangle_class (struct work_stuff *work, const char **mangled,
- strint *declp)
-
-DESCRIPTION
-
- DECLP points to the buffer into which demangling is being done.
-
- *MANGLED points to the current token to be demangled. On input,
- it points to a mangled class (I.E. "3foo", "13verylongclass", etc.)
- On exit, it points to the next token after the mangled class on
- success, or the first unconsumed token on failure.
-
- If the CONSTRUCTOR or DESTRUCTOR flags are set in WORK, then
- we are demangling a constructor or destructor. In this case
- we prepend "class::class" or "class::~class" to DECLP.
-
- Otherwise, we prepend "class::" to the current DECLP.
-
- Reset the constructor/destructor flags once they have been
- "consumed". This allows demangle_class to be called later during
- the same demangling, to do normal class demangling.
-
- Returns 1 if demangling is successful, 0 otherwise.
-
-*/
-
-static int
-demangle_class (struct work_stuff *work, const char **mangled, string *declp)
-{
- int success = 0;
- int btype;
- string class_name;
- char *save_class_name_end = 0;
-
- string_init (&class_name);
- btype = register_Btype (work);
- if (demangle_class_name (work, mangled, &class_name))
- {
- save_class_name_end = class_name.p;
- if ((work->constructor & 1) || (work->destructor & 1))
- {
- /* adjust so we don't include template args */
- if (work->temp_start && (work->temp_start != -1))
- {
- class_name.p = class_name.b + work->temp_start;
- }
- string_prepends (declp, &class_name);
- if (work -> destructor & 1)
- {
- string_prepend (declp, "~");
- work -> destructor -= 1;
- }
- else
- {
- work -> constructor -= 1;
- }
- }
- class_name.p = save_class_name_end;
- remember_Ktype (work, class_name.b, LEN_STRING(&class_name));
- remember_Btype (work, class_name.b, LEN_STRING(&class_name), btype);
- string_prepend (declp, SCOPE_STRING (work));
- string_prepends (declp, &class_name);
- success = 1;
- }
- string_delete (&class_name);
- return (success);
-}
-
-
-/* Called when there's a "__" in the mangled name, with `scan' pointing to
- the rightmost guess.
-
- Find the correct "__"-sequence where the function name ends and the
- signature starts, which is ambiguous with GNU mangling.
- Call demangle_signature here, so we can make sure we found the right
- one; *mangled will be consumed so caller will not make further calls to
- demangle_signature. */
-
-static int
-iterate_demangle_function (struct work_stuff *work, const char **mangled,
- string *declp, const char *scan)
-{
- const char *mangle_init = *mangled;
- int success = 0;
- string decl_init;
- struct work_stuff work_init;
-
- if (*(scan + 2) == '\0')
- return 0;
-
- /* Do not iterate for some demangling modes, or if there's only one
- "__"-sequence. This is the normal case. */
- if (ARM_DEMANGLING || LUCID_DEMANGLING || HP_DEMANGLING || EDG_DEMANGLING
- || strstr (scan + 2, "__") == NULL)
- return demangle_function_name (work, mangled, declp, scan);
-
- /* Save state so we can restart if the guess at the correct "__" was
- wrong. */
- string_init (&decl_init);
- string_appends (&decl_init, declp);
- memset (&work_init, 0, sizeof work_init);
- work_stuff_copy_to_from (&work_init, work);
-
- /* Iterate over occurrences of __, allowing names and types to have a
- "__" sequence in them. We must start with the first (not the last)
- occurrence, since "__" most often occur between independent mangled
- parts, hence starting at the last occurrence inside a signature
- might get us a "successful" demangling of the signature. */
-
- while (scan[2])
- {
- if (demangle_function_name (work, mangled, declp, scan))
- {
- success = demangle_signature (work, mangled, declp);
- if (success)
- break;
- }
-
- /* Reset demangle state for the next round. */
- *mangled = mangle_init;
- string_clear (declp);
- string_appends (declp, &decl_init);
- work_stuff_copy_to_from (work, &work_init);
-
- /* Leave this underscore-sequence. */
- scan += 2;
-
- /* Scan for the next "__" sequence. */
- while (*scan && (scan[0] != '_' || scan[1] != '_'))
- scan++;
-
- /* Move to last "__" in this sequence. */
- while (*scan && *scan == '_')
- scan++;
- scan -= 2;
- }
-
- /* Delete saved state. */
- delete_work_stuff (&work_init);
- string_delete (&decl_init);
-
- return success;
-}
-
-/*
-
-LOCAL FUNCTION
-
- demangle_prefix -- consume the mangled name prefix and find signature
-
-SYNOPSIS
-
- static int
- demangle_prefix (struct work_stuff *work, const char **mangled,
- string *declp);
-
-DESCRIPTION
-
- Consume and demangle the prefix of the mangled name.
- While processing the function name root, arrange to call
- demangle_signature if the root is ambiguous.
-
- DECLP points to the string buffer into which demangled output is
- placed. On entry, the buffer is empty. On exit it contains
- the root function name, the demangled operator name, or in some
- special cases either nothing or the completely demangled result.
-
- MANGLED points to the current pointer into the mangled name. As each
- token of the mangled name is consumed, it is updated. Upon entry
- the current mangled name pointer points to the first character of
- the mangled name. Upon exit, it should point to the first character
- of the signature if demangling was successful, or to the first
- unconsumed character if demangling of the prefix was unsuccessful.
-
- Returns 1 on success, 0 otherwise.
- */
-
-static int
-demangle_prefix (struct work_stuff *work, const char **mangled,
- string *declp)
-{
- int success = 1;
- const char *scan;
- int i;
-
- if (strlen(*mangled) > 6
- && (strncmp(*mangled, "_imp__", 6) == 0
- || strncmp(*mangled, "__imp_", 6) == 0))
- {
- /* it's a symbol imported from a PE dynamic library. Check for both
- new style prefix _imp__ and legacy __imp_ used by older versions
- of dlltool. */
- (*mangled) += 6;
- work->dllimported = 1;
- }
- else if (strlen(*mangled) >= 11 && strncmp(*mangled, "_GLOBAL_", 8) == 0)
- {
- char *marker = strchr (cplus_markers, (*mangled)[8]);
- if (marker != NULL && *marker == (*mangled)[10])
- {
- if ((*mangled)[9] == 'D')
- {
- /* it's a GNU global destructor to be executed at program exit */
- (*mangled) += 11;
- work->destructor = 2;
- if (gnu_special (work, mangled, declp))
- return success;
- }
- else if ((*mangled)[9] == 'I')
- {
- /* it's a GNU global constructor to be executed at program init */
- (*mangled) += 11;
- work->constructor = 2;
- if (gnu_special (work, mangled, declp))
- return success;
- }
- }
- }
- else if ((ARM_DEMANGLING || HP_DEMANGLING || EDG_DEMANGLING) && strncmp(*mangled, "__std__", 7) == 0)
- {
- /* it's a ARM global destructor to be executed at program exit */
- (*mangled) += 7;
- work->destructor = 2;
- }
- else if ((ARM_DEMANGLING || HP_DEMANGLING || EDG_DEMANGLING) && strncmp(*mangled, "__sti__", 7) == 0)
- {
- /* it's a ARM global constructor to be executed at program initial */
- (*mangled) += 7;
- work->constructor = 2;
- }
-
- /* This block of code is a reduction in strength time optimization
- of:
- scan = strstr (*mangled, "__"); */
-
- {
- scan = *mangled;
-
- do {
- scan = strchr (scan, '_');
- } while (scan != NULL && *++scan != '_');
-
- if (scan != NULL) --scan;
- }
-
- if (scan != NULL)
- {
- /* We found a sequence of two or more '_', ensure that we start at
- the last pair in the sequence. */
- i = strspn (scan, "_");
- if (i > 2)
- {
- scan += (i - 2);
- }
- }
-
- if (scan == NULL)
- {
- success = 0;
- }
- else if (work -> static_type)
- {
- if (!ISDIGIT ((unsigned char)scan[0]) && (scan[0] != 't'))
- {
- success = 0;
- }
- }
- else if ((scan == *mangled)
- && (ISDIGIT ((unsigned char)scan[2]) || (scan[2] == 'Q')
- || (scan[2] == 't') || (scan[2] == 'K') || (scan[2] == 'H')))
- {
- /* The ARM says nothing about the mangling of local variables.
- But cfront mangles local variables by prepending __<nesting_level>
- to them. As an extension to ARM demangling we handle this case. */
- if ((LUCID_DEMANGLING || ARM_DEMANGLING || HP_DEMANGLING)
- && ISDIGIT ((unsigned char)scan[2]))
- {
- *mangled = scan + 2;
- consume_count (mangled);
- string_append (declp, *mangled);
- *mangled += strlen (*mangled);
- success = 1;
- }
- else
- {
- /* A GNU style constructor starts with __[0-9Qt]. But cfront uses
- names like __Q2_3foo3bar for nested type names. So don't accept
- this style of constructor for cfront demangling. A GNU
- style member-template constructor starts with 'H'. */
- if (!(LUCID_DEMANGLING || ARM_DEMANGLING || HP_DEMANGLING || EDG_DEMANGLING))
- work -> constructor += 1;
- *mangled = scan + 2;
- }
- }
- else if (ARM_DEMANGLING && scan[2] == 'p' && scan[3] == 't')
- {
- /* Cfront-style parameterized type. Handled later as a signature. */
- success = 1;
-
- /* ARM template? */
- demangle_arm_hp_template (work, mangled, strlen (*mangled), declp);
- }
- else if (EDG_DEMANGLING && ((scan[2] == 't' && scan[3] == 'm')
- || (scan[2] == 'p' && scan[3] == 's')
- || (scan[2] == 'p' && scan[3] == 't')))
- {
- /* EDG-style parameterized type. Handled later as a signature. */
- success = 1;
-
- /* EDG template? */
- demangle_arm_hp_template (work, mangled, strlen (*mangled), declp);
- }
- else if ((scan == *mangled) && !ISDIGIT ((unsigned char)scan[2])
- && (scan[2] != 't'))
- {
- /* Mangled name starts with "__". Skip over any leading '_' characters,
- then find the next "__" that separates the prefix from the signature.
- */
- if (!(ARM_DEMANGLING || LUCID_DEMANGLING || HP_DEMANGLING || EDG_DEMANGLING)
- || (arm_special (mangled, declp) == 0))
- {
- while (*scan == '_')
- {
- scan++;
- }
- if ((scan = strstr (scan, "__")) == NULL || (*(scan + 2) == '\0'))
- {
- /* No separator (I.E. "__not_mangled"), or empty signature
- (I.E. "__not_mangled_either__") */
- success = 0;
- }
- else
- return iterate_demangle_function (work, mangled, declp, scan);
- }
- }
- else if (*(scan + 2) != '\0')
- {
- /* Mangled name does not start with "__" but does have one somewhere
- in there with non empty stuff after it. Looks like a global
- function name. Iterate over all "__":s until the right
- one is found. */
- return iterate_demangle_function (work, mangled, declp, scan);
- }
- else
- {
- /* Doesn't look like a mangled name */
- success = 0;
- }
-
- if (!success && (work->constructor == 2 || work->destructor == 2))
- {
- string_append (declp, *mangled);
- *mangled += strlen (*mangled);
- success = 1;
- }
- return (success);
-}
-
-/*
-
-LOCAL FUNCTION
-
- gnu_special -- special handling of gnu mangled strings
-
-SYNOPSIS
-
- static int
- gnu_special (struct work_stuff *work, const char **mangled,
- string *declp);
-
-
-DESCRIPTION
-
- Process some special GNU style mangling forms that don't fit
- the normal pattern. For example:
-
- _$_3foo (destructor for class foo)
- _vt$foo (foo virtual table)
- _vt$foo$bar (foo::bar virtual table)
- __vt_foo (foo virtual table, new style with thunks)
- _3foo$varname (static data member)
- _Q22rs2tu$vw (static data member)
- __t6vector1Zii (constructor with template)
- __thunk_4__$_7ostream (virtual function thunk)
- */
-
-static int
-gnu_special (struct work_stuff *work, const char **mangled, string *declp)
-{
- int n;
- int success = 1;
- const char *p;
-
- if ((*mangled)[0] == '_' && (*mangled)[1] != '\0'
- && strchr (cplus_markers, (*mangled)[1]) != NULL
- && (*mangled)[2] == '_')
- {
- /* Found a GNU style destructor, get past "_<CPLUS_MARKER>_" */
- (*mangled) += 3;
- work -> destructor += 1;
- }
- else if ((*mangled)[0] == '_'
- && (((*mangled)[1] == '_'
- && (*mangled)[2] == 'v'
- && (*mangled)[3] == 't'
- && (*mangled)[4] == '_')
- || ((*mangled)[1] == 'v'
- && (*mangled)[2] == 't' && (*mangled)[3] != '\0'
- && strchr (cplus_markers, (*mangled)[3]) != NULL)))
- {
- /* Found a GNU style virtual table, get past "_vt<CPLUS_MARKER>"
- and create the decl. Note that we consume the entire mangled
- input string, which means that demangle_signature has no work
- to do. */
- if ((*mangled)[2] == 'v')
- (*mangled) += 5; /* New style, with thunks: "__vt_" */
- else
- (*mangled) += 4; /* Old style, no thunks: "_vt<CPLUS_MARKER>" */
- while (**mangled != '\0')
- {
- switch (**mangled)
- {
- case 'Q':
- case 'K':
- success = demangle_qualified (work, mangled, declp, 0, 1);
- break;
- case 't':
- success = demangle_template (work, mangled, declp, 0, 1,
- 1);
- break;
- default:
- if (ISDIGIT((unsigned char)*mangled[0]))
- {
- n = consume_count(mangled);
- /* We may be seeing a too-large size, or else a
- ".<digits>" indicating a static local symbol. In
- any case, declare victory and move on; *don't* try
- to use n to allocate. */
- if (n > (int) strlen (*mangled))
- {
- success = 1;
- break;
- }
- else if (n == -1)
- {
- success = 0;
- break;
- }
- }
- else
- {
- n = strcspn (*mangled, cplus_markers);
- }
- string_appendn (declp, *mangled, n);
- (*mangled) += n;
- }
-
- p = strpbrk (*mangled, cplus_markers);
- if (success && ((p == NULL) || (p == *mangled)))
- {
- if (p != NULL)
- {
- string_append (declp, SCOPE_STRING (work));
- (*mangled)++;
- }
- }
- else
- {
- success = 0;
- break;
- }
- }
- if (success)
- string_append (declp, " virtual table");
- }
- else if ((*mangled)[0] == '_'
- && (strchr("0123456789Qt", (*mangled)[1]) != NULL)
- && (p = strpbrk (*mangled, cplus_markers)) != NULL)
- {
- /* static data member, "_3foo$varname" for example */
- (*mangled)++;
- switch (**mangled)
- {
- case 'Q':
- case 'K':
- success = demangle_qualified (work, mangled, declp, 0, 1);
- break;
- case 't':
- success = demangle_template (work, mangled, declp, 0, 1, 1);
- break;
- default:
- n = consume_count (mangled);
- if (n < 0 || n > (long) strlen (*mangled))
- {
- success = 0;
- break;
- }
-
- if (n > 10 && strncmp (*mangled, "_GLOBAL_", 8) == 0
- && (*mangled)[9] == 'N'
- && (*mangled)[8] == (*mangled)[10]
- && strchr (cplus_markers, (*mangled)[8]))
- {
- /* A member of the anonymous namespace. There's information
- about what identifier or filename it was keyed to, but
- it's just there to make the mangled name unique; we just
- step over it. */
- string_append (declp, "{anonymous}");
- (*mangled) += n;
-
- /* Now p points to the marker before the N, so we need to
- update it to the first marker after what we consumed. */
- p = strpbrk (*mangled, cplus_markers);
- break;
- }
-
- string_appendn (declp, *mangled, n);
- (*mangled) += n;
- }
- if (success && (p == *mangled))
- {
- /* Consumed everything up to the cplus_marker, append the
- variable name. */
- (*mangled)++;
- string_append (declp, SCOPE_STRING (work));
- n = strlen (*mangled);
- string_appendn (declp, *mangled, n);
- (*mangled) += n;
- }
- else
- {
- success = 0;
- }
- }
- else if (strncmp (*mangled, "__thunk_", 8) == 0)
- {
- int delta;
-
- (*mangled) += 8;
- delta = consume_count (mangled);
- if (delta == -1)
- success = 0;
- else
- {
- char *method = internal_cplus_demangle (work, ++*mangled);
-
- if (method)
- {
- char buf[50];
- sprintf (buf, "virtual function thunk (delta:%d) for ", -delta);
- string_append (declp, buf);
- string_append (declp, method);
- free (method);
- n = strlen (*mangled);
- (*mangled) += n;
- }
- else
- {
- success = 0;
- }
- }
- }
- else if (strncmp (*mangled, "__t", 3) == 0
- && ((*mangled)[3] == 'i' || (*mangled)[3] == 'f'))
- {
- p = (*mangled)[3] == 'i' ? " type_info node" : " type_info function";
- (*mangled) += 4;
- switch (**mangled)
- {
- case 'Q':
- case 'K':
- success = demangle_qualified (work, mangled, declp, 0, 1);
- break;
- case 't':
- success = demangle_template (work, mangled, declp, 0, 1, 1);
- break;
- default:
- success = do_type (work, mangled, declp);
- break;
- }
- if (success && **mangled != '\0')
- success = 0;
- if (success)
- string_append (declp, p);
- }
- else
- {
- success = 0;
- }
- return (success);
-}
-
-static void
-recursively_demangle(struct work_stuff *work, const char **mangled,
- string *result, int namelength)
-{
- char * recurse = (char *)NULL;
- char * recurse_dem = (char *)NULL;
-
- recurse = XNEWVEC (char, namelength + 1);
- memcpy (recurse, *mangled, namelength);
- recurse[namelength] = '\000';
-
- recurse_dem = ML_(cplus_demangle) (recurse, work->options);
-
- if (recurse_dem)
- {
- string_append (result, recurse_dem);
- free (recurse_dem);
- }
- else
- {
- string_appendn (result, *mangled, namelength);
- }
- free (recurse);
- *mangled += namelength;
-}
-
-/*
-
-LOCAL FUNCTION
-
- arm_special -- special handling of ARM/lucid mangled strings
-
-SYNOPSIS
-
- static int
- arm_special (const char **mangled,
- string *declp);
-
-
-DESCRIPTION
-
- Process some special ARM style mangling forms that don't fit
- the normal pattern. For example:
-
- __vtbl__3foo (foo virtual table)
- __vtbl__3foo__3bar (bar::foo virtual table)
-
- */
-
-static int
-arm_special (const char **mangled, string *declp)
-{
- int n;
- int success = 1;
- const char *scan;
-
- if (strncmp (*mangled, ARM_VTABLE_STRING, ARM_VTABLE_STRLEN) == 0)
- {
- /* Found a ARM style virtual table, get past ARM_VTABLE_STRING
- and create the decl. Note that we consume the entire mangled
- input string, which means that demangle_signature has no work
- to do. */
- scan = *mangled + ARM_VTABLE_STRLEN;
- while (*scan != '\0') /* first check it can be demangled */
- {
- n = consume_count (&scan);
- if (n == -1)
- {
- return (0); /* no good */
- }
- scan += n;
- if (scan[0] == '_' && scan[1] == '_')
- {
- scan += 2;
- }
- }
- (*mangled) += ARM_VTABLE_STRLEN;
- while (**mangled != '\0')
- {
- n = consume_count (mangled);
- if (n == -1
- || n > (long) strlen (*mangled))
- return 0;
- string_prependn (declp, *mangled, n);
- (*mangled) += n;
- if ((*mangled)[0] == '_' && (*mangled)[1] == '_')
- {
- string_prepend (declp, "::");
- (*mangled) += 2;
- }
- }
- string_append (declp, " virtual table");
- }
- else
- {
- success = 0;
- }
- return (success);
-}
-
-/*
-
-LOCAL FUNCTION
-
- demangle_qualified -- demangle 'Q' qualified name strings
-
-SYNOPSIS
-
- static int
- demangle_qualified (struct work_stuff *, const char *mangled,
- string *result, int isfuncname, int append);
-
-DESCRIPTION
-
- Demangle a qualified name, such as "Q25Outer5Inner" which is
- the mangled form of "Outer::Inner". The demangled output is
- prepended or appended to the result string according to the
- state of the append flag.
-
- If isfuncname is nonzero, then the qualified name we are building
- is going to be used as a member function name, so if it is a
- constructor or destructor function, append an appropriate
- constructor or destructor name. I.E. for the above example,
- the result for use as a constructor is "Outer::Inner::Inner"
- and the result for use as a destructor is "Outer::Inner::~Inner".
-
-BUGS
-
- Numeric conversion is ASCII dependent (FIXME).
-
- */
-
-static int
-demangle_qualified (struct work_stuff *work, const char **mangled,
- string *result, int isfuncname, int append)
-{
- int qualifiers = 0;
- int success = 1;
- char num[2];
- string temp;
- string last_name;
- int bindex = register_Btype (work);
-
- /* We only make use of ISFUNCNAME if the entity is a constructor or
- destructor. */
- isfuncname = (isfuncname
- && ((work->constructor & 1) || (work->destructor & 1)));
-
- string_init (&temp);
- string_init (&last_name);
-
- if ((*mangled)[0] == 'K')
- {
- /* Squangling qualified name reuse */
- int idx;
- (*mangled)++;
- idx = consume_count_with_underscores (mangled);
- if (idx == -1 || idx >= work -> numk)
- success = 0;
- else
- string_append (&temp, work -> ktypevec[idx]);
- }
- else
- switch ((*mangled)[1])
- {
- case '_':
- /* GNU mangled name with more than 9 classes. The count is preceded
- by an underscore (to distinguish it from the <= 9 case) and followed
- by an underscore. */
- (*mangled)++;
- qualifiers = consume_count_with_underscores (mangled);
- if (qualifiers == -1)
- success = 0;
- break;
-
- case '1':
- case '2':
- case '3':
- case '4':
- case '5':
- case '6':
- case '7':
- case '8':
- case '9':
- /* The count is in a single digit. */
- num[0] = (*mangled)[1];
- num[1] = '\0';
- qualifiers = atoi (num);
-
- /* If there is an underscore after the digit, skip it. This is
- said to be for ARM-qualified names, but the ARM makes no
- mention of such an underscore. Perhaps cfront uses one. */
- if ((*mangled)[2] == '_')
- {
- (*mangled)++;
- }
- (*mangled) += 2;
- break;
-
- case '0':
- default:
- success = 0;
- }
-
- if (!success)
- return success;
-
- /* Pick off the names and collect them in the temp buffer in the order
- in which they are found, separated by '::'. */
-
- while (qualifiers-- > 0)
- {
- int remember_K = 1;
- string_clear (&last_name);
-
- if (*mangled[0] == '_')
- (*mangled)++;
-
- if (*mangled[0] == 't')
- {
- /* Here we always append to TEMP since we will want to use
- the template name without the template parameters as a
- constructor or destructor name. The appropriate
- (parameter-less) value is returned by demangle_template
- in LAST_NAME. We do not remember the template type here,
- in order to match the G++ mangling algorithm. */
- success = demangle_template(work, mangled, &temp,
- &last_name, 1, 0);
- if (!success)
- break;
- }
- else if (*mangled[0] == 'K')
- {
- int idx;
- (*mangled)++;
- idx = consume_count_with_underscores (mangled);
- if (idx == -1 || idx >= work->numk)
- success = 0;
- else
- string_append (&temp, work->ktypevec[idx]);
- remember_K = 0;
-
- if (!success) break;
- }
- else
- {
- if (EDG_DEMANGLING)
- {
- int namelength;
- /* Now recursively demangle the qualifier
- * This is necessary to deal with templates in
- * mangling styles like EDG */
- namelength = consume_count (mangled);
- if (namelength == -1)
- {
- success = 0;
- break;
- }
- recursively_demangle(work, mangled, &temp, namelength);
- }
- else
- {
- string_delete (&last_name);
- success = do_type (work, mangled, &last_name);
- if (!success)
- break;
- string_appends (&temp, &last_name);
- }
- }
-
- if (remember_K)
- remember_Ktype (work, temp.b, LEN_STRING (&temp));
-
- if (qualifiers > 0)
- string_append (&temp, SCOPE_STRING (work));
- }
-
- remember_Btype (work, temp.b, LEN_STRING (&temp), bindex);
-
- /* If we are using the result as a function name, we need to append
- the appropriate '::' separated constructor or destructor name.
- We do this here because this is the most convenient place, where
- we already have a pointer to the name and the length of the name. */
-
- if (isfuncname)
- {
- string_append (&temp, SCOPE_STRING (work));
- if (work -> destructor & 1)
- string_append (&temp, "~");
- string_appends (&temp, &last_name);
- }
-
- /* Now either prepend the temp buffer to the result, or append it,
- depending upon the state of the append flag. */
-
- if (append)
- string_appends (result, &temp);
- else
- {
- if (!STRING_EMPTY (result))
- string_append (&temp, SCOPE_STRING (work));
- string_prepends (result, &temp);
- }
-
- string_delete (&last_name);
- string_delete (&temp);
- return (success);
-}
-
-/*
-
-LOCAL FUNCTION
-
- get_count -- convert an ascii count to integer, consuming tokens
-
-SYNOPSIS
-
- static int
- get_count (const char **type, int *count)
-
-DESCRIPTION
-
- Assume that *type points at a count in a mangled name; set
- *count to its value, and set *type to the next character after
- the count. There are some weird rules in effect here.
-
- If *type does not point at a string of digits, return zero.
-
- If *type points at a string of digits followed by an
- underscore, set *count to their value as an integer, advance
- *type to point *after the underscore, and return 1.
-
- If *type points at a string of digits not followed by an
- underscore, consume only the first digit. Set *count to its
- value as an integer, leave *type pointing after that digit,
- and return 1.
-
- The excuse for this odd behavior: in the ARM and HP demangling
- styles, a type can be followed by a repeat count of the form
- `Nxy', where:
-
- `x' is a single digit specifying how many additional copies
- of the type to append to the argument list, and
-
- `y' is one or more digits, specifying the zero-based index of
- the first repeated argument in the list. Yes, as you're
- unmangling the name you can figure this out yourself, but
- it's there anyway.
-
- So, for example, in `bar__3fooFPiN51', the first argument is a
- pointer to an integer (`Pi'), and then the next five arguments
- are the same (`N5'), and the first repeat is the function's
- second argument (`1').
-*/
-
-static int
-get_count (const char **type, int *count)
-{
- const char *p;
- int n;
-
- if (!ISDIGIT ((unsigned char)**type))
- return (0);
- else
- {
- *count = **type - '0';
- (*type)++;
- if (ISDIGIT ((unsigned char)**type))
- {
- p = *type;
- n = *count;
- do
- {
- n *= 10;
- n += *p - '0';
- p++;
- }
- while (ISDIGIT ((unsigned char)*p));
- if (*p == '_')
- {
- *type = p + 1;
- *count = n;
- }
- }
- }
- return (1);
-}
-
-/* RESULT will be initialised here; it will be freed on failure. The
- value returned is really a type_kind_t. */
-
-static int
-do_type (struct work_stuff *work, const char **mangled, string *result)
-{
- int n;
- int i;
- int is_proctypevec;
- int done;
- int success;
- string decl;
- const char *remembered_type;
- int type_quals;
- type_kind_t tk = tk_none;
-
- string_init (&decl);
- string_init (result);
-
- done = 0;
- success = 1;
- is_proctypevec = 0;
- while (success && !done)
- {
- int member;
- switch (**mangled)
- {
-
- /* A pointer type */
- case 'P':
- case 'p':
- (*mangled)++;
- if (! (work -> options & DMGL_JAVA))
- string_prepend (&decl, "*");
- if (tk == tk_none)
- tk = tk_pointer;
- break;
-
- /* A reference type */
- case 'R':
- (*mangled)++;
- string_prepend (&decl, "&");
- if (tk == tk_none)
- tk = tk_reference;
- break;
-
- /* An rvalue reference type */
- case 'O':
- (*mangled)++;
- string_prepend (&decl, "&&");
- if (tk == tk_none)
- tk = tk_rvalue_reference;
- break;
-
- /* An array */
- case 'A':
- {
- ++(*mangled);
- if (!STRING_EMPTY (&decl)
- && (decl.b[0] == '*' || decl.b[0] == '&'))
- {
- string_prepend (&decl, "(");
- string_append (&decl, ")");
- }
- string_append (&decl, "[");
- if (**mangled != '_')
- success = demangle_template_value_parm (work, mangled, &decl,
- tk_integral);
- if (**mangled == '_')
- ++(*mangled);
- string_append (&decl, "]");
- break;
- }
-
- /* A back reference to a previously seen type */
- case 'T':
- (*mangled)++;
- if (!get_count (mangled, &n) || n < 0 || n >= work -> ntypes)
- {
- success = 0;
- }
- else
- for (i = 0; i < work->nproctypes; i++)
- if (work -> proctypevec [i] == n)
- success = 0;
-
- if (success)
- {
- is_proctypevec = 1;
- push_processed_type (work, n);
- remembered_type = work->typevec[n];
- mangled = &remembered_type;
- }
- break;
-
- /* A function */
- case 'F':
- (*mangled)++;
- if (!STRING_EMPTY (&decl)
- && (decl.b[0] == '*' || decl.b[0] == '&'))
- {
- string_prepend (&decl, "(");
- string_append (&decl, ")");
- }
- /* After picking off the function args, we expect to either find the
- function return type (preceded by an '_') or the end of the
- string. */
- if (!demangle_nested_args (work, mangled, &decl)
- || (**mangled != '_' && **mangled != '\0'))
- {
- success = 0;
- break;
- }
- if (success && (**mangled == '_'))
- (*mangled)++;
- break;
-
- case 'M':
- {
- type_quals = TYPE_UNQUALIFIED;
-
- member = **mangled == 'M';
- (*mangled)++;
-
- string_append (&decl, ")");
-
- /* We don't need to prepend `::' for a qualified name;
- demangle_qualified will do that for us. */
- if (**mangled != 'Q')
- string_prepend (&decl, SCOPE_STRING (work));
-
- if (ISDIGIT ((unsigned char)**mangled))
- {
- n = consume_count (mangled);
- if (n == -1
- || (int) strlen (*mangled) < n)
- {
- success = 0;
- break;
- }
- string_prependn (&decl, *mangled, n);
- *mangled += n;
- }
- else if (**mangled == 'X' || **mangled == 'Y')
- {
- string temp;
- do_type (work, mangled, &temp);
- string_prepends (&decl, &temp);
- string_delete (&temp);
- }
- else if (**mangled == 't')
- {
- string temp;
- string_init (&temp);
- success = demangle_template (work, mangled, &temp,
- NULL, 1, 1);
- if (success)
- {
- string_prependn (&decl, temp.b, temp.p - temp.b);
- string_delete (&temp);
- }
- else
- {
- string_delete (&temp);
- break;
- }
- }
- else if (**mangled == 'Q')
- {
- success = demangle_qualified (work, mangled, &decl,
- /*isfuncnam=*/0,
- /*append=*/0);
- if (!success)
- break;
- }
- else
- {
- success = 0;
- break;
- }
-
- string_prepend (&decl, "(");
- if (member)
- {
- switch (**mangled)
- {
- case 'C':
- case 'V':
- case 'u':
- type_quals |= code_for_qualifier (**mangled);
- (*mangled)++;
- break;
-
- default:
- break;
- }
-
- if (*(*mangled) != 'F')
- {
- success = 0;
- break;
- }
- (*mangled)++;
- }
- if ((member && !demangle_nested_args (work, mangled, &decl))
- || **mangled != '_')
- {
- success = 0;
- break;
- }
- (*mangled)++;
- if (! PRINT_ANSI_QUALIFIERS)
- {
- break;
- }
- if (type_quals != TYPE_UNQUALIFIED)
- {
- APPEND_BLANK (&decl);
- string_append (&decl, qualifier_string (type_quals));
- }
- break;
- }
- case 'G':
- (*mangled)++;
- break;
-
- case 'C':
- case 'V':
- case 'u':
- if (PRINT_ANSI_QUALIFIERS)
- {
- if (!STRING_EMPTY (&decl))
- string_prepend (&decl, " ");
-
- string_prepend (&decl, demangle_qualifier (**mangled));
- }
- (*mangled)++;
- break;
- /*
- }
- */
-
- /* fall through */
- default:
- done = 1;
- break;
- }
- }
-
- if (success) switch (**mangled)
- {
- /* A qualified name, such as "Outer::Inner". */
- case 'Q':
- case 'K':
- {
- success = demangle_qualified (work, mangled, result, 0, 1);
- break;
- }
-
- /* A back reference to a previously seen squangled type */
- case 'B':
- (*mangled)++;
- if (!get_count (mangled, &n) || n < 0 || n >= work -> numb)
- success = 0;
- else
- string_append (result, work->btypevec[n]);
- break;
-
- case 'X':
- case 'Y':
- /* A template parm. We substitute the corresponding argument. */
- {
- int idx;
-
- (*mangled)++;
- idx = consume_count_with_underscores (mangled);
-
- if (idx == -1
- || (work->tmpl_argvec && idx >= work->ntmpl_args)
- || consume_count_with_underscores (mangled) == -1)
- {
- success = 0;
- break;
- }
-
- if (work->tmpl_argvec)
- string_append (result, work->tmpl_argvec[idx]);
- else
- string_append_template_idx (result, idx);
-
- success = 1;
- }
- break;
-
- default:
- success = demangle_fund_type (work, mangled, result);
- if (tk == tk_none)
- tk = (type_kind_t) success;
- break;
- }
-
- if (success)
- {
- if (!STRING_EMPTY (&decl))
- {
- string_append (result, " ");
- string_appends (result, &decl);
- }
- }
- else
- string_delete (result);
- string_delete (&decl);
-
- if (is_proctypevec)
- pop_processed_type (work);
-
- if (success)
- /* Assume an integral type, if we're not sure. */
- return (int) ((tk == tk_none) ? tk_integral : tk);
- else
- return 0;
-}
-
-/* Given a pointer to a type string that represents a fundamental type
- argument (int, long, unsigned int, etc) in TYPE, a pointer to the
- string in which the demangled output is being built in RESULT, and
- the WORK structure, decode the types and add them to the result.
-
- For example:
-
- "Ci" => "const int"
- "Sl" => "signed long"
- "CUs" => "const unsigned short"
-
- The value returned is really a type_kind_t. */
-
-static int
-demangle_fund_type (struct work_stuff *work,
- const char **mangled, string *result)
-{
- int done = 0;
- int success = 1;
- char buf[INTBUF_SIZE + 5 /* 'int%u_t' */];
- /* unsigned int dec = 0; */ /* JRS 2008-Oct-26: unused (see below) */
- type_kind_t tk = tk_integral;
-
- /* First pick off any type qualifiers. There can be more than one. */
-
- while (!done)
- {
- switch (**mangled)
- {
- case 'C':
- case 'V':
- case 'u':
- if (PRINT_ANSI_QUALIFIERS)
- {
- if (!STRING_EMPTY (result))
- string_prepend (result, " ");
- string_prepend (result, demangle_qualifier (**mangled));
- }
- (*mangled)++;
- break;
- case 'U':
- (*mangled)++;
- APPEND_BLANK (result);
- string_append (result, "unsigned");
- break;
- case 'S': /* signed char only */
- (*mangled)++;
- APPEND_BLANK (result);
- string_append (result, "signed");
- break;
- case 'J':
- (*mangled)++;
- APPEND_BLANK (result);
- string_append (result, "__complex");
- break;
- default:
- done = 1;
- break;
- }
- }
-
- /* Now pick off the fundamental type. There can be only one. */
-
- switch (**mangled)
- {
- case '\0':
- case '_':
- break;
- case 'v':
- (*mangled)++;
- APPEND_BLANK (result);
- string_append (result, "void");
- break;
- case 'x':
- (*mangled)++;
- APPEND_BLANK (result);
- string_append (result, "long long");
- break;
- case 'l':
- (*mangled)++;
- APPEND_BLANK (result);
- string_append (result, "long");
- break;
- case 'i':
- (*mangled)++;
- APPEND_BLANK (result);
- string_append (result, "int");
- break;
- case 's':
- (*mangled)++;
- APPEND_BLANK (result);
- string_append (result, "short");
- break;
- case 'b':
- (*mangled)++;
- APPEND_BLANK (result);
- string_append (result, "bool");
- tk = tk_bool;
- break;
- case 'c':
- (*mangled)++;
- APPEND_BLANK (result);
- string_append (result, "char");
- tk = tk_char;
- break;
- case 'w':
- (*mangled)++;
- APPEND_BLANK (result);
- string_append (result, "wchar_t");
- tk = tk_char;
- break;
- case 'r':
- (*mangled)++;
- APPEND_BLANK (result);
- string_append (result, "long double");
- tk = tk_real;
- break;
- case 'd':
- (*mangled)++;
- APPEND_BLANK (result);
- string_append (result, "double");
- tk = tk_real;
- break;
- case 'f':
- (*mangled)++;
- APPEND_BLANK (result);
- string_append (result, "float");
- tk = tk_real;
- break;
- case 'G':
- (*mangled)++;
- if (!ISDIGIT ((unsigned char)**mangled))
- {
- success = 0;
- break;
- }
- /* fall through */
- case 'I':
- (*mangled)++;
- if (**mangled == '_')
- {
- int i;
- (*mangled)++;
- for (i = 0;
- i < (long) sizeof (buf) - 1 && **mangled && **mangled != '_';
- (*mangled)++, i++)
- buf[i] = **mangled;
- if (**mangled != '_')
- {
- success = 0;
- break;
- }
- buf[i] = '\0';
- (*mangled)++;
- }
- else
- {
- strncpy (buf, *mangled, 2);
- buf[2] = '\0';
- *mangled += min (strlen (*mangled), 2);
- }
- /* JRS 2008-Oct-26: the next two commented out lines have been
- replaced by the sprintf that follows. This is to avoid use
- of sscanf. This hack is merely copied from the old demangler
- port (by Michael Matz, Simon Hausmann?) -- I have no idea if
- it is really correct/safe, but it looks ok. */
- /*sscanf (buf, "%x", &dec);
- sprintf (buf, "int%u_t", dec);*/
- sprintf (buf, "%s", "intXX_t");
- /* end JRS 2008-Oct-26 */
- APPEND_BLANK (result);
- string_append (result, buf);
- break;
-
- /* fall through */
- /* An explicit type, such as "6mytype" or "7integer" */
- case '0':
- case '1':
- case '2':
- case '3':
- case '4':
- case '5':
- case '6':
- case '7':
- case '8':
- case '9':
- {
- int bindex = register_Btype (work);
- string btype;
- string_init (&btype);
- if (demangle_class_name (work, mangled, &btype)) {
- remember_Btype (work, btype.b, LEN_STRING (&btype), bindex);
- APPEND_BLANK (result);
- string_appends (result, &btype);
- }
- else
- success = 0;
- string_delete (&btype);
- break;
- }
- case 't':
- {
- string btype;
- string_init (&btype);
- success = demangle_template (work, mangled, &btype, 0, 1, 1);
- string_appends (result, &btype);
- string_delete (&btype);
- break;
- }
- default:
- success = 0;
- break;
- }
-
- return success ? ((int) tk) : 0;
-}
-
-
-/* Handle a template's value parameter for HP aCC (extension from ARM)
- **mangled points to 'S' or 'U' */
-
-static int
-do_hpacc_template_const_value (struct work_stuff *work ATTRIBUTE_UNUSED,
- const char **mangled, string *result)
-{
- int unsigned_const;
-
- if (**mangled != 'U' && **mangled != 'S')
- return 0;
-
- unsigned_const = (**mangled == 'U');
-
- (*mangled)++;
-
- switch (**mangled)
- {
- case 'N':
- string_append (result, "-");
- /* fall through */
- case 'P':
- (*mangled)++;
- break;
- case 'M':
- /* special case for -2^31 */
- string_append (result, "-2147483648");
- (*mangled)++;
- return 1;
- default:
- return 0;
- }
-
- /* We have to be looking at an integer now */
- if (!(ISDIGIT ((unsigned char)**mangled)))
- return 0;
-
- /* We only deal with integral values for template
- parameters -- so it's OK to look only for digits */
- while (ISDIGIT ((unsigned char)**mangled))
- {
- char_str[0] = **mangled;
- string_append (result, char_str);
- (*mangled)++;
- }
-
- if (unsigned_const)
- string_append (result, "U");
-
- /* FIXME? Some day we may have 64-bit (or larger :-) ) constants
- with L or LL suffixes. pai/1997-09-03 */
-
- return 1; /* success */
-}
-
-/* Handle a template's literal parameter for HP aCC (extension from ARM)
- **mangled is pointing to the 'A' */
-
-static int
-do_hpacc_template_literal (struct work_stuff *work, const char **mangled,
- string *result)
-{
- int literal_len = 0;
- char * recurse;
- char * recurse_dem;
-
- if (**mangled != 'A')
- return 0;
-
- (*mangled)++;
-
- literal_len = consume_count (mangled);
-
- if (literal_len <= 0
- || literal_len > (long) strlen (*mangled))
- return 0;
-
- /* Literal parameters are names of arrays, functions, etc. and the
- canonical representation uses the address operator */
- string_append (result, "&");
-
- /* Now recursively demangle the literal name */
- recurse = XNEWVEC (char, literal_len + 1);
- memcpy (recurse, *mangled, literal_len);
- recurse[literal_len] = '\000';
-
- recurse_dem = ML_(cplus_demangle) (recurse, work->options);
-
- if (recurse_dem)
- {
- string_append (result, recurse_dem);
- free (recurse_dem);
- }
- else
- {
- string_appendn (result, *mangled, literal_len);
- }
- (*mangled) += literal_len;
- free (recurse);
-
- return 1;
-}
-
-static int
-snarf_numeric_literal (const char **args, string *arg)
-{
- if (**args == '-')
- {
- char_str[0] = '-';
- string_append (arg, char_str);
- (*args)++;
- }
- else if (**args == '+')
- (*args)++;
-
- if (!ISDIGIT ((unsigned char)**args))
- return 0;
-
- while (ISDIGIT ((unsigned char)**args))
- {
- char_str[0] = **args;
- string_append (arg, char_str);
- (*args)++;
- }
-
- return 1;
-}
-
-/* Demangle the next argument, given by MANGLED into RESULT, which
- *should be an uninitialized* string. It will be initialized here,
- and free'd should anything go wrong. */
-
-static int
-do_arg (struct work_stuff *work, const char **mangled, string *result)
-{
- /* Remember where we started so that we can record the type, for
- non-squangling type remembering. */
- const char *start = *mangled;
-
- string_init (result);
-
- if (work->nrepeats > 0)
- {
- --work->nrepeats;
-
- if (work->previous_argument == 0)
- return 0;
-
- /* We want to reissue the previous type in this argument list. */
- string_appends (result, work->previous_argument);
- return 1;
- }
-
- if (**mangled == 'n')
- {
- /* A squangling-style repeat. */
- (*mangled)++;
- work->nrepeats = consume_count(mangled);
-
- if (work->nrepeats <= 0)
- /* This was not a repeat count after all. */
- return 0;
-
- if (work->nrepeats > 9)
- {
- if (**mangled != '_')
- /* The repeat count should be followed by an '_' in this
- case. */
- return 0;
- else
- (*mangled)++;
- }
-
- /* Now, the repeat is all set up. */
- return do_arg (work, mangled, result);
- }
-
- /* Save the result in WORK->previous_argument so that we can find it
- if it's repeated. Note that saving START is not good enough: we
- do not want to add additional types to the back-referenceable
- type vector when processing a repeated type. */
- if (work->previous_argument)
- string_delete (work->previous_argument);
- else
- work->previous_argument = XNEW (string);
-
- if (!do_type (work, mangled, work->previous_argument))
- return 0;
-
- string_appends (result, work->previous_argument);
-
- remember_type (work, start, *mangled - start);
- return 1;
-}
-
-static void
-push_processed_type (struct work_stuff *work, int typevec_index)
-{
- if (work->nproctypes >= work->proctypevec_size)
- {
- if (!work->proctypevec_size)
- {
- work->proctypevec_size = 4;
- work->proctypevec = XNEWVEC (int, work->proctypevec_size);
- }
- else
- {
- if (work->proctypevec_size < 16)
- /* Double when small. */
- work->proctypevec_size *= 2;
- else
- {
- /* Grow slower when large. */
- if (work->proctypevec_size > (INT_MAX / 3) * 2)
- xmalloc_failed (INT_MAX);
- work->proctypevec_size = (work->proctypevec_size * 3 / 2);
- }
- work->proctypevec
- = XRESIZEVEC (int, work->proctypevec, work->proctypevec_size);
- }
- }
- work->proctypevec [work->nproctypes++] = typevec_index;
-}
-
-static void
-pop_processed_type (struct work_stuff *work)
-{
- work->nproctypes--;
-}
-
-static void
-remember_type (struct work_stuff *work, const char *start, int len)
-{
- char *tem;
-
- if (work->forgetting_types)
- return;
-
- if (work -> ntypes >= work -> typevec_size)
- {
- if (work -> typevec_size == 0)
- {
- work -> typevec_size = 3;
- work -> typevec = XNEWVEC (char *, work->typevec_size);
- }
- else
- {
- if (work -> typevec_size > INT_MAX / 2)
- xmalloc_failed (INT_MAX);
- work -> typevec_size *= 2;
- work -> typevec
- = XRESIZEVEC (char *, work->typevec, work->typevec_size);
- }
- }
- tem = XNEWVEC (char, len + 1);
- memcpy (tem, start, len);
- tem[len] = '\0';
- work -> typevec[work -> ntypes++] = tem;
-}
-
-
-/* Remember a K type class qualifier. */
-static void
-remember_Ktype (struct work_stuff *work, const char *start, int len)
-{
- char *tem;
-
- if (work -> numk >= work -> ksize)
- {
- if (work -> ksize == 0)
- {
- work -> ksize = 5;
- work -> ktypevec = XNEWVEC (char *, work->ksize);
- }
- else
- {
- if (work -> ksize > INT_MAX / 2)
- xmalloc_failed (INT_MAX);
- work -> ksize *= 2;
- work -> ktypevec
- = XRESIZEVEC (char *, work->ktypevec, work->ksize);
- }
- }
- tem = XNEWVEC (char, len + 1);
- memcpy (tem, start, len);
- tem[len] = '\0';
- work -> ktypevec[work -> numk++] = tem;
-}
-
-/* Register a B code, and get an index for it. B codes are registered
- as they are seen, rather than as they are completed, so map<temp<char> >
- registers map<temp<char> > as B0, and temp<char> as B1 */
-
-static int
-register_Btype (struct work_stuff *work)
-{
- int ret;
-
- if (work -> numb >= work -> bsize)
- {
- if (work -> bsize == 0)
- {
- work -> bsize = 5;
- work -> btypevec = XNEWVEC (char *, work->bsize);
- }
- else
- {
- if (work -> bsize > INT_MAX / 2)
- xmalloc_failed (INT_MAX);
- work -> bsize *= 2;
- work -> btypevec
- = XRESIZEVEC (char *, work->btypevec, work->bsize);
- }
- }
- ret = work -> numb++;
- work -> btypevec[ret] = NULL;
- return(ret);
-}
-
-/* Store a value into a previously registered B code type. */
-
-static void
-remember_Btype (struct work_stuff *work, const char *start,
- int len, int indx)
-{
- char *tem;
-
- tem = XNEWVEC (char, len + 1);
- memcpy (tem, start, len);
- tem[len] = '\0';
- work -> btypevec[indx] = tem;
-}
-
-/* Lose all the info related to B and K type codes. */
-static void
-forget_B_and_K_types (struct work_stuff *work)
-{
- int i;
-
- while (work -> numk > 0)
- {
- i = --(work -> numk);
- if (work -> ktypevec[i] != NULL)
- {
- free (work -> ktypevec[i]);
- work -> ktypevec[i] = NULL;
- }
- }
-
- while (work -> numb > 0)
- {
- i = --(work -> numb);
- if (work -> btypevec[i] != NULL)
- {
- free (work -> btypevec[i]);
- work -> btypevec[i] = NULL;
- }
- }
-}
-/* Forget the remembered types, but not the type vector itself. */
-
-static void
-forget_types (struct work_stuff *work)
-{
- int i;
-
- while (work -> ntypes > 0)
- {
- i = --(work -> ntypes);
- if (work -> typevec[i] != NULL)
- {
- free (work -> typevec[i]);
- work -> typevec[i] = NULL;
- }
- }
-}
-
-/* Process the argument list part of the signature, after any class spec
- has been consumed, as well as the first 'F' character (if any). For
- example:
-
- "__als__3fooRT0" => process "RT0"
- "complexfunc5__FPFPc_PFl_i" => process "PFPc_PFl_i"
-
- DECLP must be already initialised, usually non-empty. It won't be freed
- on failure.
-
- Note that g++ differs significantly from ARM and lucid style mangling
- with regards to references to previously seen types. For example, given
- the source fragment:
-
- class foo {
- public:
- foo::foo (int, foo &ia, int, foo &ib, int, foo &ic);
- };
-
- foo::foo (int, foo &ia, int, foo &ib, int, foo &ic) { ia = ib = ic; }
- void foo (int, foo &ia, int, foo &ib, int, foo &ic) { ia = ib = ic; }
-
- g++ produces the names:
-
- __3fooiRT0iT2iT2
- foo__FiR3fooiT1iT1
-
- while lcc (and presumably other ARM style compilers as well) produces:
-
- foo__FiR3fooT1T2T1T2
- __ct__3fooFiR3fooT1T2T1T2
-
- Note that g++ bases its type numbers starting at zero and counts all
- previously seen types, while lucid/ARM bases its type numbers starting
- at one and only considers types after it has seen the 'F' character
- indicating the start of the function args. For lucid/ARM style, we
- account for this difference by discarding any previously seen types when
- we see the 'F' character, and subtracting one from the type number
- reference.
-
- */
-
-static int
-demangle_args (struct work_stuff *work, const char **mangled,
- string *declp)
-{
- string arg;
- int need_comma = 0;
- int r;
- int t;
- const char *tem;
- char temptype;
-
- if (PRINT_ARG_TYPES)
- {
- string_append (declp, "(");
- if (**mangled == '\0')
- {
- string_append (declp, "void");
- }
- }
-
- while ((**mangled != '_' && **mangled != '\0' && **mangled != 'e')
- || work->nrepeats > 0)
- {
- if ((**mangled == 'N') || (**mangled == 'T'))
- {
- temptype = *(*mangled)++;
-
- if (temptype == 'N')
- {
- if (!get_count (mangled, &r))
- {
- return (0);
- }
- }
- else
- {
- r = 1;
- }
- if ((HP_DEMANGLING || ARM_DEMANGLING || EDG_DEMANGLING) && work -> ntypes >= 10)
- {
- /* If we have 10 or more types we might have more than a 1 digit
- index so we'll have to consume the whole count here. This
- will lose if the next thing is a type name preceded by a
- count but it's impossible to demangle that case properly
- anyway. Eg if we already have 12 types is T12Pc "(..., type1,
- Pc, ...)" or "(..., type12, char *, ...)" */
- if ((t = consume_count(mangled)) <= 0)
- {
- return (0);
- }
- }
- else
- {
- if (!get_count (mangled, &t))
- {
- return (0);
- }
- }
- if (LUCID_DEMANGLING || ARM_DEMANGLING || HP_DEMANGLING || EDG_DEMANGLING)
- {
- t--;
- }
- /* Validate the type index. Protect against illegal indices from
- malformed type strings. */
- if ((t < 0) || (t >= work -> ntypes))
- {
- return (0);
- }
- while (work->nrepeats > 0 || --r >= 0)
- {
- tem = work -> typevec[t];
- if (need_comma && PRINT_ARG_TYPES)
- {
- string_append (declp, ", ");
- }
- push_processed_type (work, t);
- if (!do_arg (work, &tem, &arg))
- {
- pop_processed_type (work);
- return (0);
- }
- pop_processed_type (work);
- if (PRINT_ARG_TYPES)
- {
- string_appends (declp, &arg);
- }
- string_delete (&arg);
- need_comma = 1;
- }
- }
- else
- {
- if (need_comma && PRINT_ARG_TYPES)
- string_append (declp, ", ");
- if (!do_arg (work, mangled, &arg))
- return (0);
- if (PRINT_ARG_TYPES)
- string_appends (declp, &arg);
- string_delete (&arg);
- need_comma = 1;
- }
- }
-
- if (**mangled == 'e')
- {
- (*mangled)++;
- if (PRINT_ARG_TYPES)
- {
- if (need_comma)
- {
- string_append (declp, ",");
- }
- string_append (declp, "...");
- }
- }
-
- if (PRINT_ARG_TYPES)
- {
- string_append (declp, ")");
- }
- return (1);
-}
-
-/* Like demangle_args, but for demangling the argument lists of function
- and method pointers or references, not top-level declarations. */
-
-static int
-demangle_nested_args (struct work_stuff *work, const char **mangled,
- string *declp)
-{
- string* saved_previous_argument;
- int result;
- int saved_nrepeats;
-
- /* The G++ name-mangling algorithm does not remember types on nested
- argument lists, unless -fsquangling is used, and in that case the
- type vector updated by remember_type is not used. So, we turn
- off remembering of types here. */
- ++work->forgetting_types;
-
- /* For the repeat codes used with -fsquangling, we must keep track of
- the last argument. */
- saved_previous_argument = work->previous_argument;
- saved_nrepeats = work->nrepeats;
- work->previous_argument = 0;
- work->nrepeats = 0;
-
- /* Actually demangle the arguments. */
- result = demangle_args (work, mangled, declp);
-
- /* Restore the previous_argument field. */
- if (work->previous_argument)
- {
- string_delete (work->previous_argument);
- free ((char *) work->previous_argument);
- }
- work->previous_argument = saved_previous_argument;
- --work->forgetting_types;
- work->nrepeats = saved_nrepeats;
-
- return result;
-}
-
-/* Returns 1 if a valid function name was found or 0 otherwise. */
-
-static int
-demangle_function_name (struct work_stuff *work, const char **mangled,
- string *declp, const char *scan)
-{
- size_t i;
- string type;
- const char *tem;
-
- string_appendn (declp, (*mangled), scan - (*mangled));
- string_need (declp, 1);
- *(declp -> p) = '\0';
-
- /* Consume the function name, including the "__" separating the name
- from the signature. We are guaranteed that SCAN points to the
- separator. */
-
- (*mangled) = scan + 2;
- /* We may be looking at an instantiation of a template function:
- foo__Xt1t2_Ft3t4, where t1, t2, ... are template arguments and a
- following _F marks the start of the function arguments. Handle
- the template arguments first. */
-
- if (HP_DEMANGLING && (**mangled == 'X'))
- {
- demangle_arm_hp_template (work, mangled, 0, declp);
- /* This leaves MANGLED pointing to the 'F' marking func args */
- }
-
- if (LUCID_DEMANGLING || ARM_DEMANGLING || HP_DEMANGLING || EDG_DEMANGLING)
- {
-
- /* See if we have an ARM style constructor or destructor operator.
- If so, then just record it, clear the decl, and return.
- We can't build the actual constructor/destructor decl until later,
- when we recover the class name from the signature. */
-
- if (strcmp (declp -> b, "__ct") == 0)
- {
- work -> constructor += 1;
- string_clear (declp);
- return 1;
- }
- else if (strcmp (declp -> b, "__dt") == 0)
- {
- work -> destructor += 1;
- string_clear (declp);
- return 1;
- }
- }
-
- if (declp->p - declp->b >= 3
- && declp->b[0] == 'o'
- && declp->b[1] == 'p'
- && strchr (cplus_markers, declp->b[2]) != NULL)
- {
- /* see if it's an assignment expression */
- if (declp->p - declp->b >= 10 /* op$assign_ */
- && memcmp (declp->b + 3, "assign_", 7) == 0)
- {
- for (i = 0; i < ARRAY_SIZE (optable); i++)
- {
- int len = declp->p - declp->b - 10;
- if ((int) strlen (optable[i].in) == len
- && memcmp (optable[i].in, declp->b + 10, len) == 0)
- {
- string_clear (declp);
- string_append (declp, "operator");
- string_append (declp, optable[i].out);
- string_append (declp, "=");
- break;
- }
- }
- }
- else
- {
- for (i = 0; i < ARRAY_SIZE (optable); i++)
- {
- int len = declp->p - declp->b - 3;
- if ((int) strlen (optable[i].in) == len
- && memcmp (optable[i].in, declp->b + 3, len) == 0)
- {
- string_clear (declp);
- string_append (declp, "operator");
- string_append (declp, optable[i].out);
- break;
- }
- }
- }
- }
- else if (declp->p - declp->b >= 5 && memcmp (declp->b, "type", 4) == 0
- && strchr (cplus_markers, declp->b[4]) != NULL)
- {
- /* type conversion operator */
- tem = declp->b + 5;
- if (do_type (work, &tem, &type))
- {
- string_clear (declp);
- string_append (declp, "operator ");
- string_appends (declp, &type);
- string_delete (&type);
- }
- }
- else if (declp->b[0] == '_' && declp->b[1] == '_'
- && declp->b[2] == 'o' && declp->b[3] == 'p')
- {
- /* ANSI. */
- /* type conversion operator. */
- tem = declp->b + 4;
- if (do_type (work, &tem, &type))
- {
- string_clear (declp);
- string_append (declp, "operator ");
- string_appends (declp, &type);
- string_delete (&type);
- }
- }
- else if (declp->b[0] == '_' && declp->b[1] == '_'
- && ISLOWER((unsigned char)declp->b[2])
- && ISLOWER((unsigned char)declp->b[3]))
- {
- if (declp->b[4] == '\0')
- {
- /* Operator. */
- for (i = 0; i < ARRAY_SIZE (optable); i++)
- {
- if (strlen (optable[i].in) == 2
- && memcmp (optable[i].in, declp->b + 2, 2) == 0)
- {
- string_clear (declp);
- string_append (declp, "operator");
- string_append (declp, optable[i].out);
- break;
- }
- }
- }
-
- /* BEGIN hack inserted 20050403 by JRS to deal with apparently
- non-cfront compliant new[]/delete[] manglings generated by
- the Portland Group's C++ compiler. */
- else
- if (strcmp (declp -> b, "__nwa") == 0) {
- string_clear (declp);
- string_append (declp, "operator new[]");
- }
- else
- if (strcmp (declp -> b, "__dla") == 0) {
- string_clear (declp);
- string_append (declp, "operator delete[]");
- }
- /* END hack */
-
- else
- {
- if (declp->b[2] == 'a' && declp->b[5] == '\0')
- {
- /* Assignment. */
- for (i = 0; i < ARRAY_SIZE (optable); i++)
- {
- if (strlen (optable[i].in) == 3
- && memcmp (optable[i].in, declp->b + 2, 3) == 0)
- {
- string_clear (declp);
- string_append (declp, "operator");
- string_append (declp, optable[i].out);
- break;
- }
- }
- }
- }
- }
-
- /* If a function name was obtained but it's not valid, we were not
- successful. */
- if (LEN_STRING (declp) == 1 && declp->b[0] == '.')
- return 0;
- else
- return 1;
-}
-
-/* a mini string-handling package */
-
-static void
-string_need (string *s, int n)
-{
- int tem;
-
- if (s->b == NULL)
- {
- if (n < 32)
- {
- n = 32;
- }
- s->p = s->b = XNEWVEC (char, n);
- s->e = s->b + n;
- }
- else if (s->e - s->p < n)
- {
- tem = s->p - s->b;
- if (n > INT_MAX / 2 - tem)
- xmalloc_failed (INT_MAX);
- n += tem;
- n *= 2;
- s->b = XRESIZEVEC (char, s->b, n);
- s->p = s->b + tem;
- s->e = s->b + n;
- }
-}
-
-static void
-string_delete (string *s)
-{
- if (s->b != NULL)
- {
- free (s->b);
- s->b = s->e = s->p = NULL;
- }
-}
-
-static void
-string_init (string *s)
-{
- s->b = s->p = s->e = NULL;
-}
-
-static void
-string_clear (string *s)
-{
- s->p = s->b;
-}
-
-#if 0
-
-static int
-string_empty (string *s)
-{
- return (s->b == s->p);
-}
-
-#endif
-
-static void
-string_append (string *p, const char *s)
-{
- int n;
- if (s == NULL || *s == '\0')
- return;
- n = strlen (s);
- string_need (p, n);
- memcpy (p->p, s, n);
- p->p += n;
-}
-
-static void
-string_appends (string *p, string *s)
-{
- int n;
-
- if (s->b != s->p)
- {
- n = s->p - s->b;
- string_need (p, n);
- memcpy (p->p, s->b, n);
- p->p += n;
- }
-}
-
-static void
-string_appendn (string *p, const char *s, int n)
-{
- if (n != 0)
- {
- string_need (p, n);
- memcpy (p->p, s, n);
- p->p += n;
- }
-}
-
-static void
-string_prepend (string *p, const char *s)
-{
- if (s != NULL && *s != '\0')
- {
- string_prependn (p, s, strlen (s));
- }
-}
-
-static void
-string_prepends (string *p, string *s)
-{
- if (s->b != s->p)
- {
- string_prependn (p, s->b, s->p - s->b);
- }
-}
-
-static void
-string_prependn (string *p, const char *s, int n)
-{
- char *q;
-
- if (n != 0)
- {
- string_need (p, n);
- for (q = p->p - 1; q >= p->b; q--)
- {
- q[n] = q[0];
- }
- memcpy (p->b, s, n);
- p->p += n;
- }
-}
-
-static void
-string_append_template_idx (string *s, int idx)
-{
- char buf[INTBUF_SIZE + 1 /* 'T' */];
- sprintf(buf, "T%d", idx);
- string_append (s, buf);
-}
/* Demangler for the D programming language
- Copyright (C) 2014-2017 Free Software Foundation, Inc.
+ Copyright (C) 2014-2021 Free Software Foundation, Inc.
Written by Iain Buclaw (ibuclaw@gdcproject.org)
This file is part of the libiberty library.
License along with libiberty; see the file COPYING.LIB.
If not, see <http://www.gnu.org/licenses/>. */
-/* This file exports one function; dlang_demangle.
-
- This file imports strtol for decoding mangled literals. */
+/* This file exports one function; dlang_demangle. */
#if 0 /* in valgrind */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
+#ifdef HAVE_LIMITS_H
+#include <limits.h>
+#endif
#endif /* ! in valgrind */
#if 0 /* in valgrind */
#if 0 /* in valgrind */
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
-#else
-extern long strtol (const char *nptr, char **endptr, int base);
#endif
#endif /* ! in valgrind */
#include "demangle.h"
#include "safe-ctype.h"
+#ifndef ULONG_MAX
+#define ULONG_MAX (~0UL)
+#endif
+#ifndef UINT_MAX
+#define UINT_MAX (~0U)
+#endif
+
/* A mini string-handling package */
typedef struct string /* Beware: these aren't required to be */
} string;
static void
-string_need (string *s, int n)
+string_need (string *s, size_t n)
{
- int tem;
+ size_t tem;
if (s->b == NULL)
{
s->p = s->b = XNEWVEC (char, n);
s->e = s->b + n;
}
- else if (s->e - s->p < n)
+ else if ((size_t) (s->e - s->p) < n)
{
tem = s->p - s->b;
n += tem;
static void
string_append (string *p, const char *s)
{
- int n = strlen (s);
+ size_t n = strlen (s);
string_need (p, n);
memcpy (p->p, s, n);
p->p += n;
}
static void
-string_appendn (string *p, const char *s, int n)
+string_appendn (string *p, const char *s, size_t n)
{
if (n != 0)
{
}
static void
-string_prependn (string *p, const char *s, int n)
+string_prependn (string *p, const char *s, size_t n)
{
char *q;
}
}
-/* What kinds of symbol we could be parsing. */
-enum dlang_symbol_kinds
+/* Demangle information structure we pass around. */
+struct dlang_info
{
- /* Top-level symbol, needs it's type checked. */
- dlang_top_level,
- /* Function symbol, needs it's type checked. */
- dlang_function,
- /* Strongly typed name, such as for classes, structs and enums. */
- dlang_type_name,
- /* Template identifier. */
- dlang_template_ident,
- /* Template symbol parameter. */
- dlang_template_param
+ /* The string we are demangling. */
+ const char *s;
+ /* The index of the last back reference. */
+ int last_backref;
};
+/* Pass as the LEN to dlang_parse_template if symbol length is not known. */
+#define TEMPLATE_LENGTH_UNKNOWN (-1UL)
+
/* Prototypes for forward referenced functions */
-static const char *dlang_function_args (string *, const char *);
+static const char *dlang_function_type (string *, const char *,
+ struct dlang_info *);
-static const char *dlang_type (string *, const char *);
+static const char *dlang_function_args (string *, const char *,
+ struct dlang_info *);
+
+static const char *dlang_type (string *, const char *, struct dlang_info *);
static const char *dlang_value (string *, const char *, const char *, char);
-static const char *dlang_parse_symbol (string *, const char *,
- enum dlang_symbol_kinds);
+static const char *dlang_parse_qualified (string *, const char *,
+ struct dlang_info *, int);
+
+static const char *dlang_parse_mangle (string *, const char *,
+ struct dlang_info *);
+
+static const char *dlang_parse_tuple (string *, const char *,
+ struct dlang_info *);
+
+static const char *dlang_parse_template (string *, const char *,
+ struct dlang_info *, unsigned long);
+
+static const char *dlang_lname (string *, const char *, unsigned long);
+
+
+/* Extract the number from MANGLED, and assign the result to RET.
+ Return the remaining string on success or NULL on failure.
+ A result larger than UINT_MAX is considered a failure. */
+static const char *
+dlang_number (const char *mangled, unsigned long *ret)
+{
+ /* Return NULL if trying to extract something that isn't a digit. */
+ if (mangled == NULL || !ISDIGIT (*mangled))
+ return NULL;
+
+ unsigned long val = 0;
+
+ while (ISDIGIT (*mangled))
+ {
+ unsigned long digit = mangled[0] - '0';
+
+ /* Check for overflow. */
+ if (val > (UINT_MAX - digit) / 10)
+ return NULL;
+
+ val = val * 10 + digit;
+ mangled++;
+ }
+
+ if (*mangled == '\0')
+ return NULL;
+
+ *ret = val;
+ return mangled;
+}
+
+/* Extract the hex-digit from MANGLED, and assign the result to RET.
+ Return the remaining string on success or NULL on failure. */
+static const char *
+dlang_hexdigit (const char *mangled, char *ret)
+{
+ char c;
+
+ /* Return NULL if trying to extract something that isn't a hexdigit. */
+ if (mangled == NULL || !ISXDIGIT (mangled[0]) || !ISXDIGIT (mangled[1]))
+ return NULL;
+
+ c = mangled[0];
+ if (!ISDIGIT (c))
+ (*ret) = (c - (ISUPPER (c) ? 'A' : 'a') + 10);
+ else
+ (*ret) = (c - '0');
+
+ c = mangled[1];
+ if (!ISDIGIT (c))
+ (*ret) = (*ret << 4) | (c - (ISUPPER (c) ? 'A' : 'a') + 10);
+ else
+ (*ret) = (*ret << 4) | (c - '0');
+
+ mangled += 2;
+
+ return mangled;
+}
+
+/* Extract the function calling convention from MANGLED and
+ return 1 on success or 0 on failure. */
+static int
+dlang_call_convention_p (const char *mangled)
+{
+ switch (*mangled)
+ {
+ case 'F': case 'U': case 'V':
+ case 'W': case 'R': case 'Y':
+ return 1;
+
+ default:
+ return 0;
+ }
+}
+
+/* Extract the back reference position from MANGLED, and assign the result
+ to RET. Return the remaining string on success or NULL on failure.
+ A result <= 0 is a failure. */
+static const char *
+dlang_decode_backref (const char *mangled, long *ret)
+{
+ /* Return NULL if trying to extract something that isn't a digit. */
+ if (mangled == NULL || !ISALPHA (*mangled))
+ return NULL;
+
+ /* Any identifier or non-basic type that has been emitted to the mangled
+ symbol before will not be emitted again, but is referenced by a special
+ sequence encoding the relative position of the original occurrence in the
+ mangled symbol name.
+
+ Numbers in back references are encoded with base 26 by upper case letters
+ A-Z for higher digits but lower case letters a-z for the last digit.
+
+ NumberBackRef:
+ [a-z]
+ [A-Z] NumberBackRef
+ ^
+ */
+ unsigned long val = 0;
+
+ while (ISALPHA (*mangled))
+ {
+ /* Check for overflow. */
+ if (val > (ULONG_MAX - 25) / 26)
+ break;
+
+ val *= 26;
+
+ if (mangled[0] >= 'a' && mangled[0] <= 'z')
+ {
+ val += mangled[0] - 'a';
+ if ((long) val <= 0)
+ break;
+ *ret = val;
+ return mangled + 1;
+ }
+
+ val += mangled[0] - 'A';
+ mangled++;
+ }
+
+ return NULL;
+}
+
+/* Extract the symbol pointed at by the back reference and assign the result
+ to RET. Return the remaining string on success or NULL on failure. */
+static const char *
+dlang_backref (const char *mangled, const char **ret, struct dlang_info *info)
+{
+ (*ret) = NULL;
+
+ if (mangled == NULL || *mangled != 'Q')
+ return NULL;
+
+ /* Position of 'Q'. */
+ const char *qpos = mangled;
+ long refpos;
+ mangled++;
+
+ mangled = dlang_decode_backref (mangled, &refpos);
+ if (mangled == NULL)
+ return NULL;
+
+ if (refpos > qpos - info->s)
+ return NULL;
+
+ /* Set the position of the back reference. */
+ (*ret) = qpos - refpos;
+
+ return mangled;
+}
+
+/* Demangle a back referenced symbol from MANGLED and append it to DECL.
+ Return the remaining string on success or NULL on failure. */
+static const char *
+dlang_symbol_backref (string *decl, const char *mangled,
+ struct dlang_info *info)
+{
+ /* An identifier back reference always points to a digit 0 to 9.
+
+ IdentifierBackRef:
+ Q NumberBackRef
+ ^
+ */
+ const char *backref;
+ unsigned long len;
+
+ /* Get position of the back reference. */
+ mangled = dlang_backref (mangled, &backref, info);
+
+ /* Must point to a simple identifier. */
+ backref = dlang_number (backref, &len);
+ if (backref == NULL)
+ return NULL;
+
+ backref = dlang_lname (decl, backref, len);
+ if (backref == NULL)
+ return NULL;
+
+ return mangled;
+}
+
+/* Demangle a back referenced type from MANGLED and append it to DECL.
+ IS_FUNCTION is 1 if the back referenced type is expected to be a function.
+ Return the remaining string on success or NULL on failure. */
+static const char *
+dlang_type_backref (string *decl, const char *mangled, struct dlang_info *info,
+ int is_function)
+{
+ /* A type back reference always points to a letter.
+
+ TypeBackRef:
+ Q NumberBackRef
+ ^
+ */
+ const char *backref;
+
+ /* If we appear to be moving backwards through the mangle string, then
+ bail as this may be a recursive back reference. */
+ if (mangled - info->s >= info->last_backref)
+ return NULL;
+
+ int save_refpos = info->last_backref;
+ info->last_backref = mangled - info->s;
+
+ /* Get position of the back reference. */
+ mangled = dlang_backref (mangled, &backref, info);
+
+ /* Must point to a type. */
+ if (is_function)
+ backref = dlang_function_type (decl, backref, info);
+ else
+ backref = dlang_type (decl, backref, info);
+
+ info->last_backref = save_refpos;
+
+ if (backref == NULL)
+ return NULL;
+
+ return mangled;
+}
+
+/* Extract the beginning of a symbol name from MANGLED and
+ return 1 on success or 0 on failure. */
+static int
+dlang_symbol_name_p (const char *mangled, struct dlang_info *info)
+{
+ long ret;
+ const char *qref = mangled;
-static const char *dlang_parse_tuple (string *, const char *);
+ if (ISDIGIT (*mangled))
+ return 1;
-static const char *dlang_parse_template (string *, const char *, long);
+ if (mangled[0] == '_' && mangled[1] == '_'
+ && (mangled[2] == 'T' || mangled[2] == 'U'))
+ return 1;
+ if (*mangled != 'Q')
+ return 0;
+
+ mangled = dlang_decode_backref (mangled + 1, &ret);
+ if (mangled == NULL || ret > qref - info->s)
+ return 0;
+
+ return ISDIGIT (qref[-ret]);
+}
/* Demangle the calling convention from MANGLED and append it to DECL.
Return the remaining string on success or NULL on failure. */
mangled++;
string_append (decl, "return ");
continue;
+ case 'l': /* scope */
+ mangled++;
+ string_append (decl, "scope ");
+ continue;
+ case 'm': /* @live */
+ mangled++;
+ string_append (decl, "@live ");
+ continue;
default: /* unknown attribute */
return NULL;
return mangled;
}
+/* Demangle the function type from MANGLED without the return type.
+ The arguments are appended to ARGS, the calling convention is appended
+ to CALL and attributes are appended to ATTR. Any of these can be NULL
+ to throw the information away. Return the remaining string on success
+ or NULL on failure. */
+static const char *
+dlang_function_type_noreturn (string *args, string *call, string *attr,
+ const char *mangled, struct dlang_info *info)
+{
+ string dump;
+ string_init (&dump);
+
+ /* Skip over calling convention and attributes. */
+ mangled = dlang_call_convention (call ? call : &dump, mangled);
+ mangled = dlang_attributes (attr ? attr : &dump, mangled);
+
+ if (args)
+ string_append (args, "(");
+
+ mangled = dlang_function_args (args ? args : &dump, mangled, info);
+ if (args)
+ string_append (args, ")");
+
+ string_delete (&dump);
+ return mangled;
+}
+
/* Demangle the function type from MANGLED and append it to DECL.
Return the remaining string on success or NULL on failure. */
static const char *
-dlang_function_type (string *decl, const char *mangled)
+dlang_function_type (string *decl, const char *mangled, struct dlang_info *info)
{
string attr, args, type;
- size_t szattr, szargs, sztype;
if (mangled == NULL || *mangled == '\0')
return NULL;
string_init (&args);
string_init (&type);
- /* Function call convention. */
- mangled = dlang_call_convention (decl, mangled);
-
- /* Function attributes. */
- mangled = dlang_attributes (&attr, mangled);
- szattr = string_length (&attr);
-
- /* Function arguments. */
- mangled = dlang_function_args (&args, mangled);
- szargs = string_length (&args);
+ mangled = dlang_function_type_noreturn (&args, decl, &attr, mangled, info);
/* Function return type. */
- mangled = dlang_type (&type, mangled);
- sztype = string_length (&type);
+ mangled = dlang_type (&type, mangled, info);
/* Append to decl in order. */
- string_appendn (decl, type.b, sztype);
- string_append (decl, "(");
- string_appendn (decl, args.b, szargs);
- string_append (decl, ") ");
- string_appendn (decl, attr.b, szattr);
+ string_appendn (decl, type.b, string_length (&type));
+ string_appendn (decl, args.b, string_length (&args));
+ string_append (decl, " ");
+ string_appendn (decl, attr.b, string_length (&attr));
string_delete (&attr);
string_delete (&args);
/* Demangle the argument list from MANGLED and append it to DECL.
Return the remaining string on success or NULL on failure. */
static const char *
-dlang_function_args (string *decl, const char *mangled)
+dlang_function_args (string *decl, const char *mangled, struct dlang_info *info)
{
size_t n = 0;
switch (*mangled)
{
+ case 'I': /* in(T) */
+ mangled++;
+ string_append (decl, "in ");
+ if (*mangled == 'K') /* in ref(T) */
+ {
+ mangled++;
+ string_append (decl, "ref ");
+ }
+ break;
case 'J': /* out(T) */
mangled++;
string_append (decl, "out ");
string_append (decl, "lazy ");
break;
}
- mangled = dlang_type (decl, mangled);
+ mangled = dlang_type (decl, mangled, info);
}
return mangled;
/* Demangle the type from MANGLED and append it to DECL.
Return the remaining string on success or NULL on failure. */
static const char *
-dlang_type (string *decl, const char *mangled)
+dlang_type (string *decl, const char *mangled, struct dlang_info *info)
{
if (mangled == NULL || *mangled == '\0')
return NULL;
case 'O': /* shared(T) */
mangled++;
string_append (decl, "shared(");
- mangled = dlang_type (decl, mangled);
+ mangled = dlang_type (decl, mangled, info);
string_append (decl, ")");
return mangled;
case 'x': /* const(T) */
mangled++;
string_append (decl, "const(");
- mangled = dlang_type (decl, mangled);
+ mangled = dlang_type (decl, mangled, info);
string_append (decl, ")");
return mangled;
case 'y': /* immutable(T) */
mangled++;
string_append (decl, "immutable(");
- mangled = dlang_type (decl, mangled);
+ mangled = dlang_type (decl, mangled, info);
string_append (decl, ")");
return mangled;
case 'N':
{
mangled++;
string_append (decl, "inout(");
- mangled = dlang_type (decl, mangled);
+ mangled = dlang_type (decl, mangled, info);
string_append (decl, ")");
return mangled;
}
{
mangled++;
string_append (decl, "__vector(");
- mangled = dlang_type (decl, mangled);
+ mangled = dlang_type (decl, mangled, info);
string_append (decl, ")");
return mangled;
}
return NULL;
case 'A': /* dynamic array (T[]) */
mangled++;
- mangled = dlang_type (decl, mangled);
+ mangled = dlang_type (decl, mangled, info);
string_append (decl, "[]");
return mangled;
case 'G': /* static array (T[N]) */
num++;
mangled++;
}
- mangled = dlang_type (decl, mangled);
+ mangled = dlang_type (decl, mangled, info);
string_append (decl, "[");
string_appendn (decl, numptr, num);
string_append (decl, "]");
mangled++;
string_init (&type);
- mangled = dlang_type (&type, mangled);
+ mangled = dlang_type (&type, mangled, info);
sztype = string_length (&type);
- mangled = dlang_type (decl, mangled);
+ mangled = dlang_type (decl, mangled, info);
string_append (decl, "[");
string_appendn (decl, type.b, sztype);
string_append (decl, "]");
}
case 'P': /* pointer (T*) */
mangled++;
- /* Function pointer types don't include the trailing asterisk. */
- switch (*mangled)
+ if (!dlang_call_convention_p (mangled))
{
- case 'F': case 'U': case 'W':
- case 'V': case 'R': case 'Y':
- mangled = dlang_function_type (decl, mangled);
- string_append (decl, "function");
+ mangled = dlang_type (decl, mangled, info);
+ string_append (decl, "*");
return mangled;
}
- mangled = dlang_type (decl, mangled);
- string_append (decl, "*");
+ /* Fall through */
+ case 'F': /* function T (D) */
+ case 'U': /* function T (C) */
+ case 'W': /* function T (Windows) */
+ case 'V': /* function T (Pascal) */
+ case 'R': /* function T (C++) */
+ case 'Y': /* function T (Objective-C) */
+ /* Function pointer types don't include the trailing asterisk. */
+ mangled = dlang_function_type (decl, mangled, info);
+ string_append (decl, "function");
return mangled;
- case 'I': /* ident T */
case 'C': /* class T */
case 'S': /* struct T */
case 'E': /* enum T */
case 'T': /* typedef T */
mangled++;
- return dlang_parse_symbol (decl, mangled, dlang_type_name);
+ return dlang_parse_qualified (decl, mangled, info, 0);
case 'D': /* delegate T */
{
string mods;
mangled = dlang_type_modifiers (&mods, mangled);
szmods = string_length (&mods);
- mangled = dlang_function_type (decl, mangled);
+ /* Back referenced function type. */
+ if (*mangled == 'Q')
+ mangled = dlang_type_backref (decl, mangled, info, 1);
+ else
+ mangled = dlang_function_type (decl, mangled, info);
+
string_append (decl, "delegate");
string_appendn (decl, mods.b, szmods);
}
case 'B': /* tuple T */
mangled++;
- return dlang_parse_tuple (decl, mangled);
+ return dlang_parse_tuple (decl, mangled, info);
/* Basic types */
case 'n':
}
return NULL;
+ /* Back referenced type. */
+ case 'Q':
+ return dlang_type_backref (decl, mangled, info, 0);
+
default: /* unhandled */
return NULL;
}
/* Extract the identifier from MANGLED and append it to DECL.
Return the remaining string on success or NULL on failure. */
static const char *
-dlang_identifier (string *decl, const char *mangled,
- enum dlang_symbol_kinds kind)
+dlang_identifier (string *decl, const char *mangled, struct dlang_info *info)
{
- char *endptr;
- long len;
+ unsigned long len;
if (mangled == NULL || *mangled == '\0')
return NULL;
- len = strtol (mangled, &endptr, 10);
+ if (*mangled == 'Q')
+ return dlang_symbol_backref (decl, mangled, info);
- if (endptr == NULL || len <= 0)
- return NULL;
+ /* May be a template instance without a length prefix. */
+ if (mangled[0] == '_' && mangled[1] == '_'
+ && (mangled[2] == 'T' || mangled[2] == 'U'))
+ return dlang_parse_template (decl, mangled, info, TEMPLATE_LENGTH_UNKNOWN);
- /* In template parameter symbols, the first character of the mangled
- name can be a digit. This causes ambiguity issues because the
- digits of the two numbers are adjacent. */
- if (kind == dlang_template_param)
- {
- long psize = len;
- char *pend;
- int saved = string_length (decl);
+ const char *endptr = dlang_number (mangled, &len);
- /* Work backwards until a match is found. */
- for (pend = endptr; endptr != NULL; pend--)
- {
- mangled = pend;
+ if (endptr == NULL || len == 0)
+ return NULL;
- /* Reached the beginning of the pointer to the name length,
- try parsing the entire symbol. */
- if (psize == 0)
- {
- psize = len;
- pend = endptr;
- endptr = NULL;
- }
+ if (strlen (endptr) < len)
+ return NULL;
- /* Check whether template parameter is a function with a valid
- return type or an untyped identifier. */
- if (ISDIGIT (*mangled))
- mangled = dlang_parse_symbol (decl, mangled, dlang_template_ident);
- else if (strncmp (mangled, "_D", 2) == 0)
- {
- mangled += 2;
- mangled = dlang_parse_symbol (decl, mangled, dlang_function);
- }
+ mangled = endptr;
- /* Check for name length mismatch. */
- if (mangled && (mangled - pend) == psize)
- return mangled;
+ /* May be a template instance with a length prefix. */
+ if (len >= 5 && mangled[0] == '_' && mangled[1] == '_'
+ && (mangled[2] == 'T' || mangled[2] == 'U'))
+ return dlang_parse_template (decl, mangled, info, len);
- psize /= 10;
- string_setlength (decl, saved);
- }
+ return dlang_lname (decl, mangled, len);
+}
- /* No match on any combinations. */
- return NULL;
- }
- else
+/* Extract the plain identifier from MANGLED and prepend/append it to DECL
+ with special treatment for some magic compiler generted symbols.
+ Return the remaining string on success or NULL on failure. */
+static const char *
+dlang_lname (string *decl, const char *mangled, unsigned long len)
+{
+ switch (len)
{
- if (strlen (endptr) < (size_t) len)
- return NULL;
-
- mangled = endptr;
-
- /* May be a template instance. */
- if (len >= 5 && strncmp (mangled, "__T", 3) == 0)
+ case 6:
+ if (strncmp (mangled, "__ctor", len) == 0)
{
- /* Template symbol. */
- if (ISDIGIT (mangled[3]) && mangled[3] != '0')
- return dlang_parse_template (decl, mangled, len);
-
- return NULL;
+ /* Constructor symbol for a class/struct. */
+ string_append (decl, "this");
+ mangled += len;
+ return mangled;
}
-
- switch (len)
+ else if (strncmp (mangled, "__dtor", len) == 0)
{
- case 6:
- if (strncmp (mangled, "__ctor", len) == 0)
- {
- /* Constructor symbol for a class/struct. */
- string_append (decl, "this");
- mangled += len;
- return mangled;
- }
- else if (strncmp (mangled, "__dtor", len) == 0)
- {
- /* Destructor symbol for a class/struct. */
- string_append (decl, "~this");
- mangled += len;
- return mangled;
- }
- else if (strncmp (mangled, "__initZ", len+1) == 0)
- {
- /* The static initialiser for a given symbol. */
- string_append (decl, "init$");
- mangled += len;
- return mangled;
- }
- else if (strncmp (mangled, "__vtblZ", len+1) == 0)
- {
- /* The vtable symbol for a given class. */
- string_prepend (decl, "vtable for ");
- string_setlength (decl, string_length (decl) - 1);
- mangled += len;
- return mangled;
- }
- break;
-
- case 7:
- if (strncmp (mangled, "__ClassZ", len+1) == 0)
- {
- /* The classinfo symbol for a given class. */
- string_prepend (decl, "ClassInfo for ");
- string_setlength (decl, string_length (decl) - 1);
- mangled += len;
- return mangled;
- }
- break;
+ /* Destructor symbol for a class/struct. */
+ string_append (decl, "~this");
+ mangled += len;
+ return mangled;
+ }
+ else if (strncmp (mangled, "__initZ", len + 1) == 0)
+ {
+ /* The static initialiser for a given symbol. */
+ string_prepend (decl, "initializer for ");
+ string_setlength (decl, string_length (decl) - 1);
+ mangled += len;
+ return mangled;
+ }
+ else if (strncmp (mangled, "__vtblZ", len + 1) == 0)
+ {
+ /* The vtable symbol for a given class. */
+ string_prepend (decl, "vtable for ");
+ string_setlength (decl, string_length (decl) - 1);
+ mangled += len;
+ return mangled;
+ }
+ break;
- case 10:
- if (strncmp (mangled, "__postblitMFZ", len+3) == 0)
- {
- /* Postblit symbol for a struct. */
- string_append (decl, "this(this)");
- mangled += len + 3;
- return mangled;
- }
- break;
+ case 7:
+ if (strncmp (mangled, "__ClassZ", len + 1) == 0)
+ {
+ /* The classinfo symbol for a given class. */
+ string_prepend (decl, "ClassInfo for ");
+ string_setlength (decl, string_length (decl) - 1);
+ mangled += len;
+ return mangled;
+ }
+ break;
- case 11:
- if (strncmp (mangled, "__InterfaceZ", len+1) == 0)
- {
- /* The interface symbol for a given class. */
- string_prepend (decl, "Interface for ");
- string_setlength (decl, string_length (decl) - 1);
- mangled += len;
- return mangled;
- }
- break;
+ case 10:
+ if (strncmp (mangled, "__postblitMFZ", len + 3) == 0)
+ {
+ /* Postblit symbol for a struct. */
+ string_append (decl, "this(this)");
+ mangled += len + 3;
+ return mangled;
+ }
+ break;
- case 12:
- if (strncmp (mangled, "__ModuleInfoZ", len+1) == 0)
- {
- /* The ModuleInfo symbol for a given module. */
- string_prepend (decl, "ModuleInfo for ");
- string_setlength (decl, string_length (decl) - 1);
- mangled += len;
- return mangled;
- }
- break;
+ case 11:
+ if (strncmp (mangled, "__InterfaceZ", len + 1) == 0)
+ {
+ /* The interface symbol for a given class. */
+ string_prepend (decl, "Interface for ");
+ string_setlength (decl, string_length (decl) - 1);
+ mangled += len;
+ return mangled;
}
+ break;
- string_appendn (decl, mangled, len);
- mangled += len;
+ case 12:
+ if (strncmp (mangled, "__ModuleInfoZ", len + 1) == 0)
+ {
+ /* The ModuleInfo symbol for a given module. */
+ string_prepend (decl, "ModuleInfo for ");
+ string_setlength (decl, string_length (decl) - 1);
+ mangled += len;
+ return mangled;
+ }
+ break;
}
+ string_appendn (decl, mangled, len);
+ mangled += len;
+
return mangled;
}
if (type == 'a' || type == 'u' || type == 'w')
{
/* Parse character value. */
- char value[10];
- int pos = 10;
+ char value[20];
+ int pos = sizeof(value);
int width = 0;
- char *endptr;
- long val = strtol (mangled, &endptr, 10);
+ unsigned long val;
- if (endptr == NULL || val < 0)
+ mangled = dlang_number (mangled, &val);
+ if (mangled == NULL)
return NULL;
string_append (decl, "'");
for (; width > 0; width--)
value[--pos] = '0';
- string_appendn (decl, &(value[pos]), 10 - pos);
+ string_appendn (decl, &(value[pos]), sizeof(value) - pos);
}
string_append (decl, "'");
- mangled = endptr;
}
else if (type == 'b')
{
/* Parse boolean value. */
- char *endptr;
- long val = strtol (mangled, &endptr, 10);
+ unsigned long val;
- if (endptr == NULL || val < 0)
+ mangled = dlang_number (mangled, &val);
+ if (mangled == NULL)
return NULL;
string_append (decl, val ? "true" : "false");
- mangled = endptr;
}
else
{
const char *numptr = mangled;
size_t num = 0;
+ if (! ISDIGIT (*mangled))
+ return NULL;
+
while (ISDIGIT (*mangled))
{
num++;
static const char *
dlang_parse_real (string *decl, const char *mangled)
{
- char buffer[64];
- int len = 0;
-
/* Handle NAN and +-INF. */
if (strncmp (mangled, "NAN", 3) == 0)
{
/* Hexadecimal prefix and leading bit. */
if (*mangled == 'N')
{
- buffer[len++] = '-';
+ string_append (decl, "-");
mangled++;
}
if (!ISXDIGIT (*mangled))
return NULL;
- buffer[len++] = '0';
- buffer[len++] = 'x';
- buffer[len++] = *mangled;
- buffer[len++] = '.';
+ string_append (decl, "0x");
+ string_appendn (decl, mangled, 1);
+ string_append (decl, ".");
mangled++;
/* Significand. */
while (ISXDIGIT (*mangled))
{
- buffer[len++] = *mangled;
+ string_appendn (decl, mangled, 1);
mangled++;
}
if (*mangled != 'P')
return NULL;
- buffer[len++] = 'p';
+ string_append (decl, "p");
mangled++;
if (*mangled == 'N')
{
- buffer[len++] = '-';
+ string_append (decl, "-");
mangled++;
}
while (ISDIGIT (*mangled))
{
- buffer[len++] = *mangled;
+ string_appendn (decl, mangled, 1);
mangled++;
}
- /* Write out the demangled hexadecimal, rather than trying to
- convert the buffer into a floating-point value. */
- buffer[len] = '\0';
- len = strlen (buffer);
- string_appendn (decl, buffer, len);
return mangled;
}
-/* Convert VAL from an ascii hexdigit to value. */
-static char
-ascii2hex (char val)
-{
- if (val >= 'a' && val <= 'f')
- return (val - 'a' + 10);
-
- if (val >= 'A' && val <= 'F')
- return (val - 'A' + 10);
-
- if (val >= '0' && val <= '9')
- return (val - '0');
-
- return 0;
-}
-
/* Extract the string value from MANGLED and append it to DECL.
Return the remaining string on success or NULL on failure. */
static const char *
dlang_parse_string (string *decl, const char *mangled)
{
char type = *mangled;
- char *endptr;
- long len;
+ unsigned long len;
mangled++;
- len = strtol (mangled, &endptr, 10);
-
- if (endptr == NULL || len < 0)
- return NULL;
-
- mangled = endptr;
- if (*mangled != '_')
+ mangled = dlang_number (mangled, &len);
+ if (mangled == NULL || *mangled != '_')
return NULL;
mangled++;
string_append (decl, "\"");
while (len--)
{
- if (ISXDIGIT (mangled[0]) && ISXDIGIT (mangled[1]))
+ char val;
+ const char *endptr = dlang_hexdigit (mangled, &val);
+
+ if (endptr == NULL)
+ return NULL;
+
+ /* Sanitize white and non-printable characters. */
+ switch (val)
{
- char a = ascii2hex (mangled[0]);
- char b = ascii2hex (mangled[1]);
- char val = (a << 4) | b;
+ case ' ':
+ string_append (decl, " ");
+ break;
+ case '\t':
+ string_append (decl, "\\t");
+ break;
+ case '\n':
+ string_append (decl, "\\n");
+ break;
+ case '\r':
+ string_append (decl, "\\r");
+ break;
+ case '\f':
+ string_append (decl, "\\f");
+ break;
+ case '\v':
+ string_append (decl, "\\v");
+ break;
- /* Sanitize white and non-printable characters. */
- switch (val)
+ default:
+ if (ISPRINT (val))
+ string_appendn (decl, &val, 1);
+ else
{
- case ' ':
- string_append (decl, " ");
- break;
- case '\t':
- string_append (decl, "\\t");
- break;
- case '\n':
- string_append (decl, "\\n");
- break;
- case '\r':
- string_append (decl, "\\r");
- break;
- case '\f':
- string_append (decl, "\\f");
- break;
- case '\v':
- string_append (decl, "\\v");
- break;
-
- default:
- if (ISPRINT (val))
- string_appendn (decl, &val, 1);
- else
- {
- string_append (decl, "\\x");
- string_appendn (decl, mangled, 2);
- }
+ string_append (decl, "\\x");
+ string_appendn (decl, mangled, 2);
}
}
- else
- return NULL;
- mangled += 2;
+ mangled = endptr;
}
string_append (decl, "\"");
static const char *
dlang_parse_arrayliteral (string *decl, const char *mangled)
{
- char *endptr;
- long elements = strtol (mangled, &endptr, 10);
+ unsigned long elements;
- if (endptr == NULL || elements < 0)
+ mangled = dlang_number (mangled, &elements);
+ if (mangled == NULL)
return NULL;
- mangled = endptr;
string_append (decl, "[");
while (elements--)
{
mangled = dlang_value (decl, mangled, NULL, '\0');
+ if (mangled == NULL)
+ return NULL;
+
if (elements != 0)
string_append (decl, ", ");
}
static const char *
dlang_parse_assocarray (string *decl, const char *mangled)
{
- char *endptr;
- long elements = strtol (mangled, &endptr, 10);
+ unsigned long elements;
- if (endptr == NULL || elements < 0)
+ mangled = dlang_number (mangled, &elements);
+ if (mangled == NULL)
return NULL;
- mangled = endptr;
string_append (decl, "[");
while (elements--)
{
mangled = dlang_value (decl, mangled, NULL, '\0');
+ if (mangled == NULL)
+ return NULL;
+
string_append (decl, ":");
mangled = dlang_value (decl, mangled, NULL, '\0');
+ if (mangled == NULL)
+ return NULL;
if (elements != 0)
string_append (decl, ", ");
static const char *
dlang_parse_structlit (string *decl, const char *mangled, const char *name)
{
- char *endptr;
- long args = strtol (mangled, &endptr, 10);
+ unsigned long args;
- if (endptr == NULL || args < 0)
+ mangled = dlang_number (mangled, &args);
+ if (mangled == NULL)
return NULL;
- mangled = endptr;
if (name != NULL)
string_append (decl, name);
while (args--)
{
mangled = dlang_value (decl, mangled, NULL, '\0');
+ if (mangled == NULL)
+ return NULL;
+
if (args != 0)
string_append (decl, ", ");
}
case 'i':
mangled++;
- if (*mangled < '0' || *mangled > '9')
- return NULL;
/* Fall through */
+
+ /* There really should always be an `i' before encoded numbers, but there
+ wasn't in early versions of D2, so this case range must remain for
+ backwards compatibility. */
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
mangled = dlang_parse_integer (decl, mangled, type);
return mangled;
}
-/* Extract the type modifiers from MANGLED and return the string
- length that it consumes in MANGLED on success or 0 on failure. */
-static int
-dlang_type_modifier_p (const char *mangled)
+/* Extract and demangle the symbol in MANGLED and append it to DECL.
+ Returns the remaining signature on success or NULL on failure. */
+static const char *
+dlang_parse_mangle (string *decl, const char *mangled, struct dlang_info *info)
{
- int i;
-
- switch (*mangled)
- {
- case 'x': case 'y':
- return 1;
+ /* A D mangled symbol is comprised of both scope and type information.
+
+ MangleName:
+ _D QualifiedName Type
+ _D QualifiedName Z
+ ^
+ The caller should have guaranteed that the start pointer is at the
+ above location.
+ Note that type is never a function type, but only the return type of
+ a function or the type of a variable.
+ */
+ mangled += 2;
- case 'O':
- mangled++;
- i = dlang_type_modifier_p (mangled);
- return i + 1;
+ mangled = dlang_parse_qualified (decl, mangled, info, 1);
- case 'N':
- mangled++;
- if (*mangled == 'g')
+ if (mangled != NULL)
+ {
+ /* Artificial symbols end with 'Z' and have no type. */
+ if (*mangled == 'Z')
+ mangled++;
+ else
{
- mangled++;
- i = dlang_type_modifier_p (mangled);
- return i + 2;
- }
- }
-
- return 0;
-}
+ /* Discard the declaration or return type. */
+ string type;
-/* Extract the function calling convention from MANGLED and
- return 1 on success or 0 on failure. */
-static int
-dlang_call_convention_p (const char *mangled)
-{
- /* Prefix for functions needing 'this' */
- if (*mangled == 'M')
- {
- mangled++;
- /* Also skip over any type modifiers. */
- mangled += dlang_type_modifier_p (mangled);
+ string_init (&type);
+ mangled = dlang_type (&type, mangled, info);
+ string_delete (&type);
+ }
}
- switch (*mangled)
- {
- case 'F': case 'U': case 'V':
- case 'W': case 'R': case 'Y':
- return 1;
-
- default:
- return 0;
- }
+ return mangled;
}
-/* Extract and demangle the symbol in MANGLED and append it to DECL.
+/* Extract and demangle the qualified symbol in MANGLED and append it to DECL.
+ SUFFIX_MODIFIERS is 1 if we are printing modifiers on this after the symbol.
Returns the remaining signature on success or NULL on failure. */
static const char *
-dlang_parse_symbol (string *decl, const char *mangled,
- enum dlang_symbol_kinds kind)
+dlang_parse_qualified (string *decl, const char *mangled,
+ struct dlang_info *info, int suffix_modifiers)
{
- int saved;
+ /* Qualified names are identifiers separated by their encoded length.
+ Nested functions also encode their argument types without specifying
+ what they return.
+
+ QualifiedName:
+ SymbolFunctionName
+ SymbolFunctionName QualifiedName
+ ^
+
+ SymbolFunctionName:
+ SymbolName
+ SymbolName TypeFunctionNoReturn
+ SymbolName M TypeFunctionNoReturn
+ SymbolName M TypeModifiers TypeFunctionNoReturn
+
+ The start pointer should be at the above location.
+ */
size_t n = 0;
do
{
if (n++)
string_append (decl, ".");
- mangled = dlang_identifier (decl, mangled, kind);
+ /* Skip over anonymous symbols. */
+ while (*mangled == '0')
+ mangled++;
+
+ mangled = dlang_identifier (decl, mangled, info);
- if (mangled && dlang_call_convention_p (mangled))
+ /* Consume the encoded arguments. However if this is not followed by the
+ next encoded length or mangle type, then this is not a continuation of
+ a qualified name, in which case we backtrack and return the current
+ unconsumed position of the mangled decl. */
+ if (mangled && (*mangled == 'M' || dlang_call_convention_p (mangled)))
{
string mods;
- const char *start = NULL;
- int checkpoint = 0;
+ const char *start = mangled;
+ int saved = string_length (decl);
- /* Skip over 'this' parameter. */
- if (*mangled == 'M')
- mangled++;
+ /* Save the type modifiers for appending at the end if needed. */
+ string_init (&mods);
- /* We have reached here because we expect an extern(Pascal) function.
- However this is so rare, that it is more likely a template value
- parameter. Since this can't be assumed, first attempt parsing
- the symbol as a function, and then back out on failure. */
- if (*mangled == 'V')
+ /* Skip over 'this' parameter and type modifiers. */
+ if (*mangled == 'M')
{
- start = mangled;
- checkpoint = string_length (decl);
+ mangled++;
+ mangled = dlang_type_modifiers (&mods, mangled);
+ string_setlength (decl, saved);
}
- /* Save the type modifiers for appending at the end. */
- string_init (&mods);
- mangled = dlang_type_modifiers (&mods, mangled);
-
- /* Skip over calling convention and attributes in qualified name. */
- saved = string_length (decl);
- mangled = dlang_call_convention (decl, mangled);
- mangled = dlang_attributes (decl, mangled);
- string_setlength (decl, saved);
+ mangled = dlang_function_type_noreturn (decl, NULL, NULL,
+ mangled, info);
+ if (suffix_modifiers)
+ string_appendn (decl, mods.b, string_length (&mods));
- string_append (decl, "(");
- mangled = dlang_function_args (decl, mangled);
- string_append (decl, ")");
-
- /* Add any const/immutable/shared modifier. */
- string_appendn (decl, mods.b, string_length (&mods));
- string_delete (&mods);
-
- if (mangled == NULL && checkpoint != 0)
+ if (mangled == NULL || *mangled == '\0')
{
+ /* Did not match the rule we were looking for. */
mangled = start;
- string_setlength (decl, checkpoint);
+ string_setlength (decl, saved);
}
- }
- }
- while (mangled && ISDIGIT (*mangled));
-
- /* Only top-level symbols or function template parameters have
- a type that needs checking. */
- if (kind == dlang_top_level || kind == dlang_function)
- {
- /* Artificial symbols end with 'Z' and have no type. */
- if (mangled && *mangled == 'Z')
- mangled++;
- else
- {
- saved = string_length (decl);
- mangled = dlang_type (decl, mangled);
- string_setlength (decl, saved);
- }
- /* Check that the entire symbol was successfully demangled. */
- if (kind == dlang_top_level)
- {
- if (mangled == NULL || *mangled != '\0')
- return NULL;
+ string_delete (&mods);
}
}
+ while (mangled && dlang_symbol_name_p (mangled, info));
return mangled;
}
/* Demangle the tuple from MANGLED and append it to DECL.
Return the remaining string on success or NULL on failure. */
static const char *
-dlang_parse_tuple (string *decl, const char *mangled)
+dlang_parse_tuple (string *decl, const char *mangled, struct dlang_info *info)
{
- char *endptr;
- long elements = strtol (mangled, &endptr, 10);
+ unsigned long elements;
- if (endptr == NULL || elements < 0)
+ mangled = dlang_number (mangled, &elements);
+ if (mangled == NULL)
return NULL;
- mangled = endptr;
string_append (decl, "Tuple!(");
while (elements--)
{
- mangled = dlang_type (decl, mangled);
+ mangled = dlang_type (decl, mangled, info);
+ if (mangled == NULL)
+ return NULL;
+
if (elements != 0)
string_append (decl, ", ");
}
return mangled;
}
+/* Demangle the template symbol parameter from MANGLED and append it to DECL.
+ Return the remaining string on success or NULL on failure. */
+static const char *
+dlang_template_symbol_param (string *decl, const char *mangled,
+ struct dlang_info *info)
+{
+ if (strncmp (mangled, "_D", 2) == 0
+ && dlang_symbol_name_p (mangled + 2, info))
+ return dlang_parse_mangle (decl, mangled, info);
+
+ if (*mangled == 'Q')
+ return dlang_parse_qualified (decl, mangled, info, 0);
+
+ unsigned long len;
+ const char *endptr = dlang_number (mangled, &len);
+
+ if (endptr == NULL || len == 0)
+ return NULL;
+
+ /* In template parameter symbols generated by the frontend up to 2.076,
+ the symbol length is encoded and the first character of the mangled
+ name can be a digit. This causes ambiguity issues because the digits
+ of the two numbers are adjacent. */
+ long psize = len;
+ const char *pend;
+ int saved = string_length (decl);
+
+ /* Work backwards until a match is found. */
+ for (pend = endptr; endptr != NULL; pend--)
+ {
+ mangled = pend;
+
+ /* Reached the beginning of the pointer to the name length,
+ try parsing the entire symbol. */
+ if (psize == 0)
+ {
+ psize = len;
+ pend = endptr;
+ endptr = NULL;
+ }
+
+ /* Check whether template parameter is a function with a valid
+ return type or an untyped identifier. */
+ if (dlang_symbol_name_p (mangled, info))
+ mangled = dlang_parse_qualified (decl, mangled, info, 0);
+ else if (strncmp (mangled, "_D", 2) == 0
+ && dlang_symbol_name_p (mangled + 2, info))
+ mangled = dlang_parse_mangle (decl, mangled, info);
+
+ /* Check for name length mismatch. */
+ if (mangled && (endptr == NULL || (mangled - pend) == psize))
+ return mangled;
+
+ psize /= 10;
+ string_setlength (decl, saved);
+ }
+
+ /* No match on any combinations. */
+ return NULL;
+}
+
/* Demangle the argument list from MANGLED and append it to DECL.
Return the remaining string on success or NULL on failure. */
static const char *
-dlang_template_args (string *decl, const char *mangled)
+dlang_template_args (string *decl, const char *mangled, struct dlang_info *info)
{
size_t n = 0;
{
case 'S': /* Symbol parameter. */
mangled++;
- mangled = dlang_parse_symbol (decl, mangled, dlang_template_param);
+ mangled = dlang_template_symbol_param (decl, mangled, info);
break;
case 'T': /* Type parameter. */
mangled++;
- mangled = dlang_type (decl, mangled);
+ mangled = dlang_type (decl, mangled, info);
break;
case 'V': /* Value parameter. */
{
mangled++;
type = *mangled;
+ if (type == 'Q')
+ {
+ /* Value type is a back reference, peek at the real type. */
+ const char *backref;
+ if (dlang_backref (mangled, &backref, info) == NULL)
+ return NULL;
+
+ type = *backref;
+ }
+
/* In the few instances where the type is actually desired in
the output, it should precede the value from dlang_value. */
string_init (&name);
- mangled = dlang_type (&name, mangled);
+ mangled = dlang_type (&name, mangled, info);
string_need (&name, 1);
*(name.p) = '\0';
string_delete (&name);
break;
}
+ case 'X': /* Externally mangled parameter. */
+ {
+ unsigned long len;
+ const char *endptr;
+
+ mangled++;
+ endptr = dlang_number (mangled, &len);
+ if (endptr == NULL || strlen (endptr) < len)
+ return NULL;
+ string_appendn (decl, endptr, len);
+ mangled = endptr + len;
+ break;
+ }
default:
return NULL;
}
}
/* Extract and demangle the template symbol in MANGLED, expected to
- be made up of LEN characters, and append it to DECL.
+ be made up of LEN characters (-1 if unknown), and append it to DECL.
Returns the remaining signature on success or NULL on failure. */
static const char *
-dlang_parse_template (string *decl, const char *mangled, long len)
+dlang_parse_template (string *decl, const char *mangled,
+ struct dlang_info *info, unsigned long len)
{
const char *start = mangled;
+ string args;
/* Template instance names have the types and values of its parameters
encoded into it.
TemplateInstanceName:
Number __T LName TemplateArgs Z
+ Number __U LName TemplateArgs Z
^
The start pointer should be at the above location, and LEN should be
the value of the decoded number.
*/
- if (strncmp (mangled, "__T", 3) != 0)
+
+ /* Template symbol. */
+ if (!dlang_symbol_name_p (mangled + 3, info) || mangled[3] == '0')
return NULL;
mangled += 3;
/* Template identifier. */
- mangled = dlang_identifier (decl, mangled, dlang_template_ident);
+ mangled = dlang_identifier (decl, mangled, info);
/* Template arguments. */
+ string_init (&args);
+ mangled = dlang_template_args (&args, mangled, info);
+
string_append (decl, "!(");
- mangled = dlang_template_args (decl, mangled);
+ string_appendn (decl, args.b, string_length (&args));
string_append (decl, ")");
+ string_delete (&args);
+
/* Check for template name length mismatch. */
- if (mangled && (mangled - start) != len)
+ if (len != TEMPLATE_LENGTH_UNKNOWN
+ && mangled
+ && (unsigned long) (mangled - start) != len)
return NULL;
return mangled;
}
+/* Initialize the information structure we use to pass around information. */
+static void
+dlang_demangle_init_info (const char *mangled, int last_backref,
+ struct dlang_info *info)
+{
+ info->s = mangled;
+ info->last_backref = last_backref;
+}
+
/* Extract and demangle the symbol in MANGLED. Returns the demangled
signature on success or NULL on failure. */
}
else
{
- mangled += 2;
+ struct dlang_info info;
+
+ dlang_demangle_init_info (mangled, strlen (mangled), &info);
+ mangled = dlang_parse_mangle (&decl, mangled, &info);
- if (dlang_parse_symbol (&decl, mangled, dlang_top_level) == NULL)
+ /* Check that the entire symbol was successfully demangled. */
+ if (mangled == NULL || *mangled != '\0')
string_delete (&decl);
}
/*------------------------------------------------------------*/
/* The demangler's job is to take a raw symbol name and turn it into
- something a Human Bean can understand. Our mangling model
- comprises a three stage pipeline. Mangling pushes names forward
- through the pipeline (0, then 1, then 2) and demangling is
- obviously the reverse. In practice it is highly unlikely that a
- name would require all stages, but it is not impossible either.
+ something a Human Bean can understand. There are two levels of
+ mangling.
- 0. If we're working with Rust, Rust names are lightly mangled by
- the Rust front end.
-
- 1. Then the name is subject to standard C++ mangling.
+ 1. First, C++ names are mangled by the compiler. So we'll have to
+ undo that.
2. Optionally, in relatively rare cases, the resulting name is then
itself encoded using Z-escaping (see pub_core_redir.h) so as to
Therefore, VG_(demangle) first tries to undo (2). If successful,
the soname part is discarded (humans don't want to see that).
- Then, it tries to undo (1) (using demangling code from GNU/FSF) and
- finally it tries to undo (0).
+ Then, it tries to undo (1) (using demangling code from GNU/FSF).
Finally, it changes the name of all symbols which are known to be
functions below main() to "(below main)". This helps reduce
If do_cxx_demangle == True, it does all the above stages:
- undo (2) [Z-encoding]
- undo (1) [C++ mangling]
- - if (1) succeeds, undo (0) [Rust mangling]
- do the below-main hack
- Rust demangling (0) is only done if C++ demangling (1) succeeds
- because Rust demangling is performed in-place, and it is difficult
- to prove that we "own" the storage -- hence, that the in-place
- operation is safe -- unless it is clear that it has come from the
- C++ demangler, which returns its output in a heap-allocated buffer
- which we can be sure we own. In practice (Nov 2016) this does not
- seem to be a problem, since the Rust compiler appears to apply C++
- mangling after Rust mangling, so we never encounter symbols that
- require Rust demangling but not C++ demangling.
-
If do_cxx_demangle == False, the C++ and Rust stags are skipped:
- undo (2) [Z-encoding]
- do the below-main hack
demangled = ML_(cplus_demangle) ( orig, DMGL_ANSI | DMGL_PARAMS );
*result = (demangled == NULL) ? orig : demangled;
-
- if (demangled) {
- /* Possibly undo (0). This is the only place where it is
- safe, from a storage management perspective, to
- Rust-demangle the symbol. That's because Rust demangling
- happens in place, so we need to be sure that the storage
- it is happening in is actually owned by us, and non-const.
- In this case, the value returned by ML_(cplus_demangle)
- does have that property. */
- if (rust_is_mangled(demangled)) {
- rust_demangle_sym(demangled);
- }
- *result = demangled;
- } else {
- *result = orig;
- }
-
} else {
*result = orig;
}
/* Defs for interface to demanglers.
- Copyright (C) 1992-2017 Free Software Foundation, Inc.
+ Copyright (C) 1992-2021 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License
*/
#define DMGL_AUTO (1 << 8)
-#define DMGL_GNU (1 << 9)
-#define DMGL_LUCID (1 << 10)
-#define DMGL_ARM (1 << 11)
-#define DMGL_HP (1 << 12) /* For the HP aCC compiler;
- same as ARM except for
- template arguments, etc. */
-#define DMGL_EDG (1 << 13)
#define DMGL_GNU_V3 (1 << 14)
#define DMGL_GNAT (1 << 15)
#define DMGL_DLANG (1 << 16)
#define DMGL_RUST (1 << 17) /* Rust wraps GNU_V3 style mangling. */
/* If none of these are set, use 'current_demangling_style' as the default. */
-#define DMGL_STYLE_MASK (DMGL_AUTO|DMGL_GNU|DMGL_LUCID|DMGL_ARM|DMGL_HP|DMGL_EDG|DMGL_GNU_V3|DMGL_JAVA|DMGL_GNAT|DMGL_DLANG|DMGL_RUST)
-
+#define DMGL_STYLE_MASK (DMGL_AUTO|DMGL_GNU_V3|DMGL_JAVA|DMGL_GNAT|DMGL_DLANG|DMGL_RUST)
+
+/* Disable a limit on the depth of recursion in mangled strings.
+ Note if this limit is disabled then stack exhaustion is possible when
+ demangling pathologically complicated strings. Bug reports about stack
+ exhaustion when the option is enabled will be rejected. */
+#define DMGL_NO_RECURSE_LIMIT (1 << 18)
+
+/* If DMGL_NO_RECURSE_LIMIT is not enabled, then this is the value used as
+ the maximum depth of recursion allowed. It should be enough for any
+ real-world mangled name. */
+#define DEMANGLE_RECURSION_LIMIT 2048
+
/* Enumeration of possible demangling styles.
Lucid and ARM styles are still kept logically distinct, even though
no_demangling = -1,
unknown_demangling = 0,
auto_demangling = DMGL_AUTO,
- gnu_demangling = DMGL_GNU,
- lucid_demangling = DMGL_LUCID,
- arm_demangling = DMGL_ARM,
- hp_demangling = DMGL_HP,
- edg_demangling = DMGL_EDG,
gnu_v3_demangling = DMGL_GNU_V3,
java_demangling = DMGL_JAVA,
gnat_demangling = DMGL_GNAT,
#define NO_DEMANGLING_STYLE_STRING "none"
#define AUTO_DEMANGLING_STYLE_STRING "auto"
-#define GNU_DEMANGLING_STYLE_STRING "gnu"
-#define LUCID_DEMANGLING_STYLE_STRING "lucid"
-#define ARM_DEMANGLING_STYLE_STRING "arm"
-#define HP_DEMANGLING_STYLE_STRING "hp"
-#define EDG_DEMANGLING_STYLE_STRING "edg"
#define GNU_V3_DEMANGLING_STYLE_STRING "gnu-v3"
#define JAVA_DEMANGLING_STYLE_STRING "java"
#define GNAT_DEMANGLING_STYLE_STRING "gnat"
#define CURRENT_DEMANGLING_STYLE current_demangling_style
#define AUTO_DEMANGLING (((int) CURRENT_DEMANGLING_STYLE) & DMGL_AUTO)
-#define GNU_DEMANGLING (((int) CURRENT_DEMANGLING_STYLE) & DMGL_GNU)
-#define LUCID_DEMANGLING (((int) CURRENT_DEMANGLING_STYLE) & DMGL_LUCID)
-#define ARM_DEMANGLING (((int) CURRENT_DEMANGLING_STYLE) & DMGL_ARM)
-#define HP_DEMANGLING (((int) CURRENT_DEMANGLING_STYLE) & DMGL_HP)
-#define EDG_DEMANGLING (((int) CURRENT_DEMANGLING_STYLE) & DMGL_EDG)
#define GNU_V3_DEMANGLING (((int) CURRENT_DEMANGLING_STYLE) & DMGL_GNU_V3)
#define JAVA_DEMANGLING (((int) CURRENT_DEMANGLING_STYLE) & DMGL_JAVA)
#define GNAT_DEMANGLING (((int) CURRENT_DEMANGLING_STYLE) & DMGL_GNAT)
extern char *
ML_(cplus_demangle) (const char *mangled, int options);
-extern int
-cplus_demangle_opname (const char *opname, char *result, int options);
-
-extern const char *
-cplus_mangle_opname (const char *opname, int options);
-
/* Note: This sets global state. FIXME if you care about multi-threading. */
-extern void
-set_cplus_marker_for_demangling (int ch);
-
extern enum demangling_styles
cplus_demangle_set_style (enum demangling_styles style);
extern char *
dlang_demangle (const char *mangled, int options);
-/* Returns non-zero iff MANGLED is a rust mangled symbol. MANGLED must
- already have been demangled through cplus_demangle_v3. If this function
- returns non-zero then MANGLED can be demangled (in-place) using
- RUST_DEMANGLE_SYM. */
extern int
-rust_is_mangled (const char *mangled);
-
-/* Demangles SYM (in-place) if RUST_IS_MANGLED returned non-zero for SYM.
- If RUST_IS_MANGLED returned zero for SYM then RUST_DEMANGLE_SYM might
- replace characters that cannot be demangled with '?' and might truncate
- SYM. After calling RUST_DEMANGLE_SYM SYM might be shorter, but never
- larger. */
-extern void
-rust_demangle_sym (char *sym);
-
-/* Demangles MANGLED if it was GNU_V3 and then RUST mangled, otherwise
- returns NULL. Uses CPLUS_DEMANGLE_V3, RUST_IS_MANGLED and
- RUST_DEMANGLE_SYM. Returns a new string that is owned by the caller. */
+rust_demangle_callback (const char *mangled, int options,
+ demangle_callbackref callback, void *opaque);
+
+
extern char *
rust_demangle (const char *mangled, int options);
template argument, and the right subtree is either NULL or
another TEMPLATE_ARGLIST node. */
DEMANGLE_COMPONENT_TEMPLATE_ARGLIST,
+ /* A template parameter object (C++20). The left subtree is the
+ corresponding template argument. */
+ DEMANGLE_COMPONENT_TPARM_OBJ,
/* An initializer list. The left subtree is either an explicit type or
NULL, and the right subtree is a DEMANGLE_COMPONENT_ARGLIST. */
DEMANGLE_COMPONENT_INITIALIZER_LIST,
Initialize to zero. Private to d_print_comp.
All other fields are final after initialization. */
int d_printing;
+ int d_counting;
union
{
/* An abstract string datatype.
- Copyright (C) 1998-2017 Free Software Foundation, Inc.
+ Copyright (C) 1998-2021 Free Software Foundation, Inc.
Contributed by Mark Mitchell (mark@markmitchell.com).
This file is part of GNU CC.
/* An abstract string datatype.
- Copyright (C) 1998-2017 Free Software Foundation, Inc.
+ Copyright (C) 1998-2021 Free Software Foundation, Inc.
Contributed by Mark Mitchell (mark@markmitchell.com).
This file is part of GCC.
/* Demangler for the Rust programming language
- Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ Copyright (C) 2016-2021 Free Software Foundation, Inc.
Written by David Tolnay (dtolnay@gmail.com).
+ Rewritten by Eduard-Mihai Burtescu (eddyb@lyken.rs) for v0 support.
This file is part of the libiberty library.
Libiberty is free software; you can redistribute it and/or
#endif /* ! in valgrind */
#if 0 /* in valgrind */
+#include <inttypes.h>
#include <sys/types.h>
#include <string.h>
#include <stdio.h>
+#include <stdlib.h>
#endif /* ! in valgrind */
#if 0 /* in valgrind */
#include "demangle.h"
#include "safe-ctype.h"
-/* Mangled Rust symbols look like this:
- _$LT$std..sys..fd..FileDesc$u20$as$u20$core..ops..Drop$GT$::drop::hc68340e1baa4987a
+typedef UChar uint8_t;
+typedef Char int8_t;
+typedef UShort uint16_t;
+typedef Short int16_t;
+typedef UInt uint32_t;
+typedef Int int32_t;
+typedef ULong uint64_t;
+typedef Long int64_t;
+#define PRIu64 "llu"
+#define PRIx64 "llx"
- The original symbol is:
- <std::sys::fd::FileDesc as core::ops::Drop>::drop
+struct rust_demangler
+{
+ const char *sym;
+ size_t sym_len;
- The last component of the path is a 64-bit hash in lowercase hex,
- prefixed with "h". Rust does not have a global namespace between
- crates, an illusion which Rust maintains by using the hash to
- distinguish things that would otherwise have the same symbol.
+ void *callback_opaque;
+ demangle_callbackref callback;
- Any path component not starting with a XID_Start character is
- prefixed with "_".
+ /* Position of the next character to read from the symbol. */
+ size_t next;
- The following escape sequences are used:
+ /* Non-zero if any error occurred. */
+ int errored;
- "," => $C$
- "@" => $SP$
- "*" => $BP$
- "&" => $RF$
- "<" => $LT$
- ">" => $GT$
- "(" => $LP$
- ")" => $RP$
- " " => $u20$
- "\"" => $u22$
- "'" => $u27$
- "+" => $u2b$
- ";" => $u3b$
- "[" => $u5b$
- "]" => $u5d$
- "{" => $u7b$
- "}" => $u7d$
- "~" => $u7e$
+ /* Non-zero if nothing should be printed. */
+ int skipping_printing;
- A double ".." means "::" and a single "." means "-".
+ /* Non-zero if printing should be verbose (e.g. include hashes). */
+ int verbose;
- The only characters allowed in the mangled symbol are a-zA-Z0-9 and _.:$ */
+ /* Rust mangling version, with legacy mangling being -1. */
+ int version;
-static const char *hash_prefix = "::h";
-static const size_t hash_prefix_len = 3;
-static const size_t hash_len = 16;
+ uint64_t bound_lifetime_depth;
+};
-static int is_prefixed_hash (const char *start);
-static int looks_like_rust (const char *sym, size_t len);
-static int unescape (const char **in, char **out, const char *seq, char value);
+/* Parsing functions. */
-/* INPUT: sym: symbol that has been through C++ (gnu v3) demangling
+static char
+peek (const struct rust_demangler *rdm)
+{
+ if (rdm->next < rdm->sym_len)
+ return rdm->sym[rdm->next];
+ return 0;
+}
- This function looks for the following indicators:
+static int
+eat (struct rust_demangler *rdm, char c)
+{
+ if (peek (rdm) == c)
+ {
+ rdm->next++;
+ return 1;
+ }
+ else
+ return 0;
+}
- 1. The hash must consist of "h" followed by 16 lowercase hex digits.
+static char
+next (struct rust_demangler *rdm)
+{
+ char c = peek (rdm);
+ if (!c)
+ rdm->errored = 1;
+ else
+ rdm->next++;
+ return c;
+}
- 2. As a sanity check, the hash must use between 5 and 15 of the 16
- possible hex digits. This is true of 99.9998% of hashes so once
- in your life you may see a false negative. The point is to
- notice path components that could be Rust hashes but are
- probably not, like "haaaaaaaaaaaaaaaa". In this case a false
- positive (non-Rust symbol has an important path component
- removed because it looks like a Rust hash) is worse than a false
- negative (the rare Rust symbol is not demangled) so this sets
- the balance in favor of false negatives.
+static uint64_t
+parse_integer_62 (struct rust_demangler *rdm)
+{
+ char c;
+ uint64_t x;
- 3. There must be no characters other than a-zA-Z0-9 and _.:$
+ if (eat (rdm, '_'))
+ return 0;
- 4. There must be no unrecognized $-sign sequences.
+ x = 0;
+ while (!eat (rdm, '_'))
+ {
+ c = next (rdm);
+ x *= 62;
+ if (ISDIGIT (c))
+ x += c - '0';
+ else if (ISLOWER (c))
+ x += 10 + (c - 'a');
+ else if (ISUPPER (c))
+ x += 10 + 26 + (c - 'A');
+ else
+ {
+ rdm->errored = 1;
+ return 0;
+ }
+ }
+ return x + 1;
+}
- 5. There must be no sequence of three or more dots in a row ("..."). */
+static uint64_t
+parse_opt_integer_62 (struct rust_demangler *rdm, char tag)
+{
+ if (!eat (rdm, tag))
+ return 0;
+ return 1 + parse_integer_62 (rdm);
+}
-int
-rust_is_mangled (const char *sym)
+static uint64_t
+parse_disambiguator (struct rust_demangler *rdm)
{
- size_t len, len_without_hash;
+ return parse_opt_integer_62 (rdm, 's');
+}
- if (!sym)
- return 0;
+static size_t
+parse_hex_nibbles (struct rust_demangler *rdm, uint64_t *value)
+{
+ char c;
+ size_t hex_len;
- len = strlen (sym);
- if (len <= hash_prefix_len + hash_len)
- /* Not long enough to contain "::h" + hash + something else */
- return 0;
+ hex_len = 0;
+ *value = 0;
- len_without_hash = len - (hash_prefix_len + hash_len);
- if (!is_prefixed_hash (sym + len_without_hash))
- return 0;
+ while (!eat (rdm, '_'))
+ {
+ *value <<= 4;
+
+ c = next (rdm);
+ if (ISDIGIT (c))
+ *value |= c - '0';
+ else if (c >= 'a' && c <= 'f')
+ *value |= 10 + (c - 'a');
+ else
+ {
+ rdm->errored = 1;
+ return 0;
+ }
+ hex_len++;
+ }
- return looks_like_rust (sym, len_without_hash);
+ return hex_len;
}
-/* A hash is the prefix "::h" followed by 16 lowercase hex digits. The
- hex digits must comprise between 5 and 15 (inclusive) distinct
- digits. */
+struct rust_mangled_ident
+{
+ /* ASCII part of the identifier. */
+ const char *ascii;
+ size_t ascii_len;
+
+ /* Punycode insertion codes for Unicode codepoints, if any. */
+ const char *punycode;
+ size_t punycode_len;
+};
+
+static struct rust_mangled_ident
+parse_ident (struct rust_demangler *rdm)
+{
+ char c;
+ size_t start, len;
+ int is_punycode = 0;
+ struct rust_mangled_ident ident;
+
+ ident.ascii = NULL;
+ ident.ascii_len = 0;
+ ident.punycode = NULL;
+ ident.punycode_len = 0;
+
+ if (rdm->version != -1)
+ is_punycode = eat (rdm, 'u');
+
+ c = next (rdm);
+ if (!ISDIGIT (c))
+ {
+ rdm->errored = 1;
+ return ident;
+ }
+ len = c - '0';
+
+ if (c != '0')
+ while (ISDIGIT (peek (rdm)))
+ len = len * 10 + (next (rdm) - '0');
+
+ /* Skip past the optional `_` separator (v0). */
+ if (rdm->version != -1)
+ eat (rdm, '_');
+
+ start = rdm->next;
+ rdm->next += len;
+ /* Check for overflows. */
+ if ((start > rdm->next) || (rdm->next > rdm->sym_len))
+ {
+ rdm->errored = 1;
+ return ident;
+ }
+ ident.ascii = rdm->sym + start;
+ ident.ascii_len = len;
+
+ if (is_punycode)
+ {
+ ident.punycode_len = 0;
+ while (ident.ascii_len > 0)
+ {
+ ident.ascii_len--;
+
+ /* The last '_' is a separator between ascii & punycode. */
+ if (ident.ascii[ident.ascii_len] == '_')
+ break;
+
+ ident.punycode_len++;
+ }
+ if (!ident.punycode_len)
+ {
+ rdm->errored = 1;
+ return ident;
+ }
+ ident.punycode = ident.ascii + (len - ident.punycode_len);
+ }
+
+ if (ident.ascii_len == 0)
+ ident.ascii = NULL;
+
+ return ident;
+}
+
+/* Printing functions. */
+
+static void
+print_str (struct rust_demangler *rdm, const char *data, size_t len)
+{
+ if (!rdm->errored && !rdm->skipping_printing)
+ rdm->callback (data, len, rdm->callback_opaque);
+}
+
+#define PRINT(s) print_str (rdm, s, strlen (s))
+
+static void
+print_uint64 (struct rust_demangler *rdm, uint64_t x)
+{
+ char s[21];
+ snprintf (s, 21, "%" PRIu64, x);
+ PRINT (s);
+}
+
+static void
+print_uint64_hex (struct rust_demangler *rdm, uint64_t x)
+{
+ char s[17];
+ snprintf (s, 17, "%" PRIx64, x);
+ PRINT (s);
+}
+
+/* Return a 0x0-0xf value if the char is 0-9a-f, and -1 otherwise. */
static int
-is_prefixed_hash (const char *str)
+decode_lower_hex_nibble (char nibble)
+{
+ if ('0' <= nibble && nibble <= '9')
+ return nibble - '0';
+ if ('a' <= nibble && nibble <= 'f')
+ return 0xa + (nibble - 'a');
+ return -1;
+}
+
+/* Return the unescaped character for a "$...$" escape, or 0 if invalid. */
+static char
+decode_legacy_escape (const char *e, size_t len, size_t *out_len)
{
- const char *end;
- char seen[16];
- size_t i;
- int count;
+ char c = 0;
+ size_t escape_len = 0;
+ int lo_nibble = -1, hi_nibble = -1;
- if (strncmp (str, hash_prefix, hash_prefix_len))
+ if (len < 3 || e[0] != '$')
return 0;
- str += hash_prefix_len;
-
- memset (seen, 0, sizeof(seen));
- for (end = str + hash_len; str < end; str++)
- if (*str >= '0' && *str <= '9')
- seen[*str - '0'] = 1;
- else if (*str >= 'a' && *str <= 'f')
- seen[*str - 'a' + 10] = 1;
- else
- return 0;
- /* Count how many distinct digits seen */
- count = 0;
- for (i = 0; i < 16; i++)
- if (seen[i])
- count++;
+ e++;
+ len--;
+
+ if (e[0] == 'C')
+ {
+ escape_len = 1;
+
+ c = ',';
+ }
+ else if (len > 2)
+ {
+ escape_len = 2;
+
+ if (e[0] == 'S' && e[1] == 'P')
+ c = '@';
+ else if (e[0] == 'B' && e[1] == 'P')
+ c = '*';
+ else if (e[0] == 'R' && e[1] == 'F')
+ c = '&';
+ else if (e[0] == 'L' && e[1] == 'T')
+ c = '<';
+ else if (e[0] == 'G' && e[1] == 'T')
+ c = '>';
+ else if (e[0] == 'L' && e[1] == 'P')
+ c = '(';
+ else if (e[0] == 'R' && e[1] == 'P')
+ c = ')';
+ else if (e[0] == 'u' && len > 3)
+ {
+ escape_len = 3;
+
+ hi_nibble = decode_lower_hex_nibble (e[1]);
+ if (hi_nibble < 0)
+ return 0;
+ lo_nibble = decode_lower_hex_nibble (e[2]);
+ if (lo_nibble < 0)
+ return 0;
+
+ /* Only allow non-control ASCII characters. */
+ if (hi_nibble > 7)
+ return 0;
+ c = (hi_nibble << 4) | lo_nibble;
+ if (c < 0x20)
+ return 0;
+ }
+ }
+
+ if (!c || len <= escape_len || e[escape_len] != '$')
+ return 0;
- return count >= 5 && count <= 15;
+ *out_len = 2 + escape_len;
+ return c;
}
+static void
+print_ident (struct rust_demangler *rdm, struct rust_mangled_ident ident)
+{
+ char unescaped;
+ uint8_t *out, *p, d;
+ size_t len, cap, punycode_pos, j;
+ /* Punycode parameters and state. */
+ uint32_t c;
+ size_t base, t_min, t_max, skew, damp, bias, i;
+ size_t delta, w, k, t;
+
+ if (rdm->errored || rdm->skipping_printing)
+ return;
+
+ if (rdm->version == -1)
+ {
+ /* Ignore leading underscores preceding escape sequences.
+ The mangler inserts an underscore to make sure the
+ identifier begins with a XID_Start character. */
+ if (ident.ascii_len >= 2 && ident.ascii[0] == '_'
+ && ident.ascii[1] == '$')
+ {
+ ident.ascii++;
+ ident.ascii_len--;
+ }
+
+ while (ident.ascii_len > 0)
+ {
+ /* Handle legacy escape sequences ("$...$", ".." or "."). */
+ if (ident.ascii[0] == '$')
+ {
+ unescaped
+ = decode_legacy_escape (ident.ascii, ident.ascii_len, &len);
+ if (unescaped)
+ print_str (rdm, &unescaped, 1);
+ else
+ {
+ /* Unexpected escape sequence, print the rest verbatim. */
+ print_str (rdm, ident.ascii, ident.ascii_len);
+ return;
+ }
+ }
+ else if (ident.ascii[0] == '.')
+ {
+ if (ident.ascii_len >= 2 && ident.ascii[1] == '.')
+ {
+ /* ".." becomes "::" */
+ PRINT ("::");
+ len = 2;
+ }
+ else
+ {
+ PRINT (".");
+ len = 1;
+ }
+ }
+ else
+ {
+ /* Print everything before the next escape sequence, at once. */
+ for (len = 0; len < ident.ascii_len; len++)
+ if (ident.ascii[len] == '$' || ident.ascii[len] == '.')
+ break;
+
+ print_str (rdm, ident.ascii, len);
+ }
+
+ ident.ascii += len;
+ ident.ascii_len -= len;
+ }
+
+ return;
+ }
+
+ if (!ident.punycode)
+ {
+ print_str (rdm, ident.ascii, ident.ascii_len);
+ return;
+ }
+
+ len = 0;
+ cap = 4;
+ while (cap < ident.ascii_len)
+ {
+ cap *= 2;
+ /* Check for overflows. */
+ if ((cap * 4) / 4 != cap)
+ {
+ rdm->errored = 1;
+ return;
+ }
+ }
+
+ /* Store the output codepoints as groups of 4 UTF-8 bytes. */
+ out = (uint8_t *)xmalloc (cap * 4);
+ if (!out)
+ {
+ rdm->errored = 1;
+ return;
+ }
+
+ /* Populate initial output from ASCII fragment. */
+ for (len = 0; len < ident.ascii_len; len++)
+ {
+ p = out + 4 * len;
+ p[0] = 0;
+ p[1] = 0;
+ p[2] = 0;
+ p[3] = ident.ascii[len];
+ }
+
+ /* Punycode parameters and initial state. */
+ base = 36;
+ t_min = 1;
+ t_max = 26;
+ skew = 38;
+ damp = 700;
+ bias = 72;
+ i = 0;
+ c = 0x80;
+
+ punycode_pos = 0;
+ while (punycode_pos < ident.punycode_len)
+ {
+ /* Read one delta value. */
+ delta = 0;
+ w = 1;
+ k = 0;
+ do
+ {
+ k += base;
+ t = k < bias ? 0 : (k - bias);
+ if (t < t_min)
+ t = t_min;
+ if (t > t_max)
+ t = t_max;
+
+ if (punycode_pos >= ident.punycode_len)
+ goto cleanup;
+ d = ident.punycode[punycode_pos++];
+
+ if (ISLOWER (d))
+ d = d - 'a';
+ else if (ISDIGIT (d))
+ d = 26 + (d - '0');
+ else
+ {
+ rdm->errored = 1;
+ goto cleanup;
+ }
+
+ delta += d * w;
+ w *= base - t;
+ }
+ while (d >= t);
+
+ /* Compute the new insert position and character. */
+ len++;
+ i += delta;
+ c += i / len;
+ i %= len;
+
+ /* Ensure enough space is available. */
+ if (cap < len)
+ {
+ cap *= 2;
+ /* Check for overflows. */
+ if ((cap * 4) / 4 != cap || cap < len)
+ {
+ rdm->errored = 1;
+ goto cleanup;
+ }
+ }
+ p = (uint8_t *)xrealloc (out, cap * 4);
+ if (!p)
+ {
+ rdm->errored = 1;
+ goto cleanup;
+ }
+ out = p;
+
+ /* Move the characters after the insert position. */
+ p = out + i * 4;
+ memmove (p + 4, p, (len - i - 1) * 4);
+
+ /* Insert the new character, as UTF-8 bytes. */
+ p[0] = c >= 0x10000 ? 0xf0 | (c >> 18) : 0;
+ p[1] = c >= 0x800 ? (c < 0x10000 ? 0xe0 : 0x80) | ((c >> 12) & 0x3f) : 0;
+ p[2] = (c < 0x800 ? 0xc0 : 0x80) | ((c >> 6) & 0x3f);
+ p[3] = 0x80 | (c & 0x3f);
+
+ /* If there are no more deltas, decoding is complete. */
+ if (punycode_pos == ident.punycode_len)
+ break;
+
+ i++;
+
+ /* Perform bias adaptation. */
+ delta /= damp;
+ damp = 2;
+
+ delta += delta / len;
+ k = 0;
+ while (delta > ((base - t_min) * t_max) / 2)
+ {
+ delta /= base - t_min;
+ k += base;
+ }
+ bias = k + ((base - t_min + 1) * delta) / (delta + skew);
+ }
+
+ /* Remove all the 0 bytes to leave behind an UTF-8 string. */
+ for (i = 0, j = 0; i < len * 4; i++)
+ if (out[i] != 0)
+ out[j++] = out[i];
+
+ print_str (rdm, (const char *)out, j);
+
+cleanup:
+ free (out);
+}
+
+/* Print the lifetime according to the previously decoded index.
+ An index of `0` always refers to `'_`, but starting with `1`,
+ indices refer to late-bound lifetimes introduced by a binder. */
+static void
+print_lifetime_from_index (struct rust_demangler *rdm, uint64_t lt)
+{
+ char c;
+ uint64_t depth;
+
+ PRINT ("'");
+ if (lt == 0)
+ {
+ PRINT ("_");
+ return;
+ }
+
+ depth = rdm->bound_lifetime_depth - lt;
+ /* Try to print lifetimes alphabetically first. */
+ if (depth < 26)
+ {
+ c = 'a' + depth;
+ print_str (rdm, &c, 1);
+ }
+ else
+ {
+ /* Use `'_123` after running out of letters. */
+ PRINT ("_");
+ print_uint64 (rdm, depth);
+ }
+}
+
+/* Demangling functions. */
+
+static void demangle_binder (struct rust_demangler *rdm);
+static void demangle_path (struct rust_demangler *rdm, int in_value);
+static void demangle_generic_arg (struct rust_demangler *rdm);
+static void demangle_type (struct rust_demangler *rdm);
+static int demangle_path_maybe_open_generics (struct rust_demangler *rdm);
+static void demangle_dyn_trait (struct rust_demangler *rdm);
+static void demangle_const (struct rust_demangler *rdm);
+static void demangle_const_uint (struct rust_demangler *rdm);
+static void demangle_const_int (struct rust_demangler *rdm);
+static void demangle_const_bool (struct rust_demangler *rdm);
+static void demangle_const_char (struct rust_demangler *rdm);
+
+/* Optionally enter a binder ('G') for late-bound lifetimes,
+ printing e.g. `for<'a, 'b> `, and make those lifetimes visible
+ to the caller (via depth level, which the caller should reset). */
+static void
+demangle_binder (struct rust_demangler *rdm)
+{
+ uint64_t i, bound_lifetimes;
+
+ if (rdm->errored)
+ return;
+
+ bound_lifetimes = parse_opt_integer_62 (rdm, 'G');
+ if (bound_lifetimes > 0)
+ {
+ PRINT ("for<");
+ for (i = 0; i < bound_lifetimes; i++)
+ {
+ if (i > 0)
+ PRINT (", ");
+ rdm->bound_lifetime_depth++;
+ print_lifetime_from_index (rdm, 1);
+ }
+ PRINT ("> ");
+ }
+}
+
+static void
+demangle_path (struct rust_demangler *rdm, int in_value)
+{
+ char tag, ns;
+ int was_skipping_printing;
+ size_t i, backref, old_next;
+ uint64_t dis;
+ struct rust_mangled_ident name;
+
+ if (rdm->errored)
+ return;
+
+ switch (tag = next (rdm))
+ {
+ case 'C':
+ dis = parse_disambiguator (rdm);
+ name = parse_ident (rdm);
+
+ print_ident (rdm, name);
+ if (rdm->verbose)
+ {
+ PRINT ("[");
+ print_uint64_hex (rdm, dis);
+ PRINT ("]");
+ }
+ break;
+ case 'N':
+ ns = next (rdm);
+ if (!ISLOWER (ns) && !ISUPPER (ns))
+ {
+ rdm->errored = 1;
+ return;
+ }
+
+ demangle_path (rdm, in_value);
+
+ dis = parse_disambiguator (rdm);
+ name = parse_ident (rdm);
+
+ if (ISUPPER (ns))
+ {
+ /* Special namespaces, like closures and shims. */
+ PRINT ("::{");
+ switch (ns)
+ {
+ case 'C':
+ PRINT ("closure");
+ break;
+ case 'S':
+ PRINT ("shim");
+ break;
+ default:
+ print_str (rdm, &ns, 1);
+ }
+ if (name.ascii || name.punycode)
+ {
+ PRINT (":");
+ print_ident (rdm, name);
+ }
+ PRINT ("#");
+ print_uint64 (rdm, dis);
+ PRINT ("}");
+ }
+ else
+ {
+ /* Implementation-specific/unspecified namespaces. */
+
+ if (name.ascii || name.punycode)
+ {
+ PRINT ("::");
+ print_ident (rdm, name);
+ }
+ }
+ break;
+ case 'M':
+ case 'X':
+ /* Ignore the `impl`'s own path.*/
+ parse_disambiguator (rdm);
+ was_skipping_printing = rdm->skipping_printing;
+ rdm->skipping_printing = 1;
+ demangle_path (rdm, in_value);
+ rdm->skipping_printing = was_skipping_printing;
+ /* fallthrough */
+ case 'Y':
+ PRINT ("<");
+ demangle_type (rdm);
+ if (tag != 'M')
+ {
+ PRINT (" as ");
+ demangle_path (rdm, 0);
+ }
+ PRINT (">");
+ break;
+ case 'I':
+ demangle_path (rdm, in_value);
+ if (in_value)
+ PRINT ("::");
+ PRINT ("<");
+ for (i = 0; !rdm->errored && !eat (rdm, 'E'); i++)
+ {
+ if (i > 0)
+ PRINT (", ");
+ demangle_generic_arg (rdm);
+ }
+ PRINT (">");
+ break;
+ case 'B':
+ backref = parse_integer_62 (rdm);
+ if (!rdm->skipping_printing)
+ {
+ old_next = rdm->next;
+ rdm->next = backref;
+ demangle_path (rdm, in_value);
+ rdm->next = old_next;
+ }
+ break;
+ default:
+ rdm->errored = 1;
+ return;
+ }
+}
+
+static void
+demangle_generic_arg (struct rust_demangler *rdm)
+{
+ uint64_t lt;
+ if (eat (rdm, 'L'))
+ {
+ lt = parse_integer_62 (rdm);
+ print_lifetime_from_index (rdm, lt);
+ }
+ else if (eat (rdm, 'K'))
+ demangle_const (rdm);
+ else
+ demangle_type (rdm);
+}
+
+static const char *
+basic_type (char tag)
+{
+ switch (tag)
+ {
+ case 'b':
+ return "bool";
+ case 'c':
+ return "char";
+ case 'e':
+ return "str";
+ case 'u':
+ return "()";
+ case 'a':
+ return "i8";
+ case 's':
+ return "i16";
+ case 'l':
+ return "i32";
+ case 'x':
+ return "i64";
+ case 'n':
+ return "i128";
+ case 'i':
+ return "isize";
+ case 'h':
+ return "u8";
+ case 't':
+ return "u16";
+ case 'm':
+ return "u32";
+ case 'y':
+ return "u64";
+ case 'o':
+ return "u128";
+ case 'j':
+ return "usize";
+ case 'f':
+ return "f32";
+ case 'd':
+ return "f64";
+ case 'z':
+ return "!";
+ case 'p':
+ return "_";
+ case 'v':
+ return "...";
+
+ default:
+ return NULL;
+ }
+}
+
+static void
+demangle_type (struct rust_demangler *rdm)
+{
+ char tag;
+ size_t i, old_next, backref;
+ uint64_t lt, old_bound_lifetime_depth;
+ const char *basic;
+ struct rust_mangled_ident abi;
+
+ if (rdm->errored)
+ return;
+
+ tag = next (rdm);
+
+ basic = basic_type (tag);
+ if (basic)
+ {
+ PRINT (basic);
+ return;
+ }
+
+ switch (tag)
+ {
+ case 'R':
+ case 'Q':
+ PRINT ("&");
+ if (eat (rdm, 'L'))
+ {
+ lt = parse_integer_62 (rdm);
+ if (lt)
+ {
+ print_lifetime_from_index (rdm, lt);
+ PRINT (" ");
+ }
+ }
+ if (tag != 'R')
+ PRINT ("mut ");
+ demangle_type (rdm);
+ break;
+ case 'P':
+ case 'O':
+ PRINT ("*");
+ if (tag != 'P')
+ PRINT ("mut ");
+ else
+ PRINT ("const ");
+ demangle_type (rdm);
+ break;
+ case 'A':
+ case 'S':
+ PRINT ("[");
+ demangle_type (rdm);
+ if (tag == 'A')
+ {
+ PRINT ("; ");
+ demangle_const (rdm);
+ }
+ PRINT ("]");
+ break;
+ case 'T':
+ PRINT ("(");
+ for (i = 0; !rdm->errored && !eat (rdm, 'E'); i++)
+ {
+ if (i > 0)
+ PRINT (", ");
+ demangle_type (rdm);
+ }
+ if (i == 1)
+ PRINT (",");
+ PRINT (")");
+ break;
+ case 'F':
+ old_bound_lifetime_depth = rdm->bound_lifetime_depth;
+ demangle_binder (rdm);
+
+ if (eat (rdm, 'U'))
+ PRINT ("unsafe ");
+
+ if (eat (rdm, 'K'))
+ {
+ if (eat (rdm, 'C'))
+ {
+ abi.ascii = "C";
+ abi.ascii_len = 1;
+ }
+ else
+ {
+ abi = parse_ident (rdm);
+ if (!abi.ascii || abi.punycode)
+ {
+ rdm->errored = 1;
+ goto restore;
+ }
+ }
+
+ PRINT ("extern \"");
+
+ /* If the ABI had any `-`, they were replaced with `_`,
+ so the parts between `_` have to be re-joined with `-`. */
+ for (i = 0; i < abi.ascii_len; i++)
+ {
+ if (abi.ascii[i] == '_')
+ {
+ print_str (rdm, abi.ascii, i);
+ PRINT ("-");
+ abi.ascii += i + 1;
+ abi.ascii_len -= i + 1;
+ i = 0;
+ }
+ }
+ print_str (rdm, abi.ascii, abi.ascii_len);
+
+ PRINT ("\" ");
+ }
+
+ PRINT ("fn(");
+ for (i = 0; !rdm->errored && !eat (rdm, 'E'); i++)
+ {
+ if (i > 0)
+ PRINT (", ");
+ demangle_type (rdm);
+ }
+ PRINT (")");
+
+ if (eat (rdm, 'u'))
+ {
+ /* Skip printing the return type if it's 'u', i.e. `()`. */
+ }
+ else
+ {
+ PRINT (" -> ");
+ demangle_type (rdm);
+ }
+
+ /* Restore `bound_lifetime_depth` to outside the binder. */
+ restore:
+ rdm->bound_lifetime_depth = old_bound_lifetime_depth;
+ break;
+ case 'D':
+ PRINT ("dyn ");
+
+ old_bound_lifetime_depth = rdm->bound_lifetime_depth;
+ demangle_binder (rdm);
+
+ for (i = 0; !rdm->errored && !eat (rdm, 'E'); i++)
+ {
+ if (i > 0)
+ PRINT (" + ");
+ demangle_dyn_trait (rdm);
+ }
+
+ /* Restore `bound_lifetime_depth` to outside the binder. */
+ rdm->bound_lifetime_depth = old_bound_lifetime_depth;
+
+ if (!eat (rdm, 'L'))
+ {
+ rdm->errored = 1;
+ return;
+ }
+ lt = parse_integer_62 (rdm);
+ if (lt)
+ {
+ PRINT (" + ");
+ print_lifetime_from_index (rdm, lt);
+ }
+ break;
+ case 'B':
+ backref = parse_integer_62 (rdm);
+ if (!rdm->skipping_printing)
+ {
+ old_next = rdm->next;
+ rdm->next = backref;
+ demangle_type (rdm);
+ rdm->next = old_next;
+ }
+ break;
+ default:
+ /* Go back to the tag, so `demangle_path` also sees it. */
+ rdm->next--;
+ demangle_path (rdm, 0);
+ }
+}
+
+/* A trait in a trait object may have some "existential projections"
+ (i.e. associated type bindings) after it, which should be printed
+ in the `<...>` of the trait, e.g. `dyn Trait<T, U, Assoc=X>`.
+ To this end, this method will keep the `<...>` of an 'I' path
+ open, by omitting the `>`, and return `Ok(true)` in that case. */
static int
-looks_like_rust (const char *str, size_t len)
-{
- const char *end = str + len;
-
- while (str < end)
- switch (*str)
- {
- case '$':
- if (!strncmp (str, "$C$", 3))
- str += 3;
- else if (!strncmp (str, "$SP$", 4)
- || !strncmp (str, "$BP$", 4)
- || !strncmp (str, "$RF$", 4)
- || !strncmp (str, "$LT$", 4)
- || !strncmp (str, "$GT$", 4)
- || !strncmp (str, "$LP$", 4)
- || !strncmp (str, "$RP$", 4))
- str += 4;
- else if (!strncmp (str, "$u20$", 5)
- || !strncmp (str, "$u22$", 5)
- || !strncmp (str, "$u27$", 5)
- || !strncmp (str, "$u2b$", 5)
- || !strncmp (str, "$u3b$", 5)
- || !strncmp (str, "$u5b$", 5)
- || !strncmp (str, "$u5d$", 5)
- || !strncmp (str, "$u7b$", 5)
- || !strncmp (str, "$u7d$", 5)
- || !strncmp (str, "$u7e$", 5))
- str += 5;
- else
- return 0;
- break;
- case '.':
- /* Do not allow three or more consecutive dots */
- if (!strncmp (str, "...", 3))
- return 0;
- /* Fall through */
- case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
- case 'g': case 'h': case 'i': case 'j': case 'k': case 'l':
- case 'm': case 'n': case 'o': case 'p': case 'q': case 'r':
- case 's': case 't': case 'u': case 'v': case 'w': case 'x':
- case 'y': case 'z':
- case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
- case 'G': case 'H': case 'I': case 'J': case 'K': case 'L':
- case 'M': case 'N': case 'O': case 'P': case 'Q': case 'R':
- case 'S': case 'T': case 'U': case 'V': case 'W': case 'X':
- case 'Y': case 'Z':
- case '0': case '1': case '2': case '3': case '4': case '5':
- case '6': case '7': case '8': case '9':
- case '_':
- case ':':
- str++;
- break;
- default:
- return 0;
- }
-
- return 1;
-}
-
-/*
- INPUT: sym: symbol for which rust_is_mangled(sym) returned 1.
-
- The input is demangled in-place because the mangled name is always
- longer than the demangled one. */
-
-void
-rust_demangle_sym (char *sym)
-{
- const char *in;
- char *out;
- const char *end;
-
- if (!sym)
+demangle_path_maybe_open_generics (struct rust_demangler *rdm)
+{
+ int open;
+ size_t i, old_next, backref;
+
+ open = 0;
+
+ if (rdm->errored)
+ return open;
+
+ if (eat (rdm, 'B'))
+ {
+ backref = parse_integer_62 (rdm);
+ if (!rdm->skipping_printing)
+ {
+ old_next = rdm->next;
+ rdm->next = backref;
+ open = demangle_path_maybe_open_generics (rdm);
+ rdm->next = old_next;
+ }
+ }
+ else if (eat (rdm, 'I'))
+ {
+ demangle_path (rdm, 0);
+ PRINT ("<");
+ open = 1;
+ for (i = 0; !rdm->errored && !eat (rdm, 'E'); i++)
+ {
+ if (i > 0)
+ PRINT (", ");
+ demangle_generic_arg (rdm);
+ }
+ }
+ else
+ demangle_path (rdm, 0);
+ return open;
+}
+
+static void
+demangle_dyn_trait (struct rust_demangler *rdm)
+{
+ int open;
+ struct rust_mangled_ident name;
+
+ if (rdm->errored)
return;
- in = sym;
- out = sym;
- end = sym + strlen (sym) - (hash_prefix_len + hash_len);
-
- while (in < end)
- switch (*in)
- {
- case '$':
- if (!(unescape (&in, &out, "$C$", ',')
- || unescape (&in, &out, "$SP$", '@')
- || unescape (&in, &out, "$BP$", '*')
- || unescape (&in, &out, "$RF$", '&')
- || unescape (&in, &out, "$LT$", '<')
- || unescape (&in, &out, "$GT$", '>')
- || unescape (&in, &out, "$LP$", '(')
- || unescape (&in, &out, "$RP$", ')')
- || unescape (&in, &out, "$u20$", ' ')
- || unescape (&in, &out, "$u22$", '\"')
- || unescape (&in, &out, "$u27$", '\'')
- || unescape (&in, &out, "$u2b$", '+')
- || unescape (&in, &out, "$u3b$", ';')
- || unescape (&in, &out, "$u5b$", '[')
- || unescape (&in, &out, "$u5d$", ']')
- || unescape (&in, &out, "$u7b$", '{')
- || unescape (&in, &out, "$u7d$", '}')
- || unescape (&in, &out, "$u7e$", '~'))) {
- /* unexpected escape sequence, not looks_like_rust. */
- goto fail;
- }
- break;
- case '_':
- /* If this is the start of a path component and the next
- character is an escape sequence, ignore the underscore. The
- mangler inserts an underscore to make sure the path
- component begins with a XID_Start character. */
- if ((in == sym || in[-1] == ':') && in[1] == '$')
- in++;
- else
- *out++ = *in++;
- break;
- case '.':
- if (in[1] == '.')
- {
- /* ".." becomes "::" */
- *out++ = ':';
- *out++ = ':';
- in += 2;
- }
- else
- {
- /* "." becomes "-" */
- *out++ = '-';
- in++;
- }
- break;
- case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
- case 'g': case 'h': case 'i': case 'j': case 'k': case 'l':
- case 'm': case 'n': case 'o': case 'p': case 'q': case 'r':
- case 's': case 't': case 'u': case 'v': case 'w': case 'x':
- case 'y': case 'z':
- case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
- case 'G': case 'H': case 'I': case 'J': case 'K': case 'L':
- case 'M': case 'N': case 'O': case 'P': case 'Q': case 'R':
- case 'S': case 'T': case 'U': case 'V': case 'W': case 'X':
- case 'Y': case 'Z':
- case '0': case '1': case '2': case '3': case '4': case '5':
- case '6': case '7': case '8': case '9':
- case ':':
- *out++ = *in++;
- break;
- default:
- /* unexpected character in symbol, not looks_like_rust. */
- goto fail;
- }
- goto done;
-
-fail:
- *out++ = '?'; /* This is pretty lame, but it's hard to do better. */
-done:
- *out = '\0';
+ open = demangle_path_maybe_open_generics (rdm);
+
+ while (eat (rdm, 'p'))
+ {
+ if (!open)
+ PRINT ("<");
+ else
+ PRINT (", ");
+ open = 1;
+
+ name = parse_ident (rdm);
+ print_ident (rdm, name);
+ PRINT (" = ");
+ demangle_type (rdm);
+ }
+
+ if (open)
+ PRINT (">");
}
+static void
+demangle_const (struct rust_demangler *rdm)
+{
+ char ty_tag;
+ size_t old_next, backref;
+
+ if (rdm->errored)
+ return;
+
+ if (eat (rdm, 'B'))
+ {
+ backref = parse_integer_62 (rdm);
+ if (!rdm->skipping_printing)
+ {
+ old_next = rdm->next;
+ rdm->next = backref;
+ demangle_const (rdm);
+ rdm->next = old_next;
+ }
+ return;
+ }
+
+ ty_tag = next (rdm);
+ switch (ty_tag)
+ {
+ /* Placeholder. */
+ case 'p':
+ PRINT ("_");
+ return;
+
+ /* Unsigned integer types. */
+ case 'h':
+ case 't':
+ case 'm':
+ case 'y':
+ case 'o':
+ case 'j':
+ demangle_const_uint (rdm);
+ break;
+
+ /* Signed integer types. */
+ case 'a':
+ case 's':
+ case 'l':
+ case 'x':
+ case 'n':
+ case 'i':
+ demangle_const_int (rdm);
+ break;
+
+ /* Boolean. */
+ case 'b':
+ demangle_const_bool (rdm);
+ break;
+
+ /* Character. */
+ case 'c':
+ demangle_const_char (rdm);
+ break;
+
+ default:
+ rdm->errored = 1;
+ return;
+ }
+
+ if (rdm->errored)
+ return;
+
+ if (rdm->verbose)
+ {
+ PRINT (": ");
+ PRINT (basic_type (ty_tag));
+ }
+}
+
+static void
+demangle_const_uint (struct rust_demangler *rdm)
+{
+ size_t hex_len;
+ uint64_t value;
+
+ if (rdm->errored)
+ return;
+
+ hex_len = parse_hex_nibbles (rdm, &value);
+
+ if (hex_len > 16)
+ {
+ /* Print anything that doesn't fit in `uint64_t` verbatim. */
+ PRINT ("0x");
+ print_str (rdm, rdm->sym + (rdm->next - hex_len), hex_len);
+ }
+ else if (hex_len > 0)
+ print_uint64 (rdm, value);
+ else
+ rdm->errored = 1;
+}
+
+static void
+demangle_const_int (struct rust_demangler *rdm)
+{
+ if (eat (rdm, 'n'))
+ PRINT ("-");
+ demangle_const_uint (rdm);
+}
+
+static void
+demangle_const_bool (struct rust_demangler *rdm)
+{
+ uint64_t value;
+
+ if (parse_hex_nibbles (rdm, &value) != 1)
+ {
+ rdm->errored = 1;
+ return;
+ }
+
+ if (value == 0)
+ PRINT ("false");
+ else if (value == 1)
+ PRINT ("true");
+ else
+ rdm->errored = 1;
+}
+
+static void
+demangle_const_char (struct rust_demangler *rdm)
+{
+ size_t hex_len;
+ uint64_t value;
+
+ hex_len = parse_hex_nibbles (rdm, &value);
+
+ if (hex_len == 0 || hex_len > 8)
+ {
+ rdm->errored = 1;
+ return;
+ }
+
+ /* Match Rust's character "debug" output as best as we can. */
+ PRINT ("'");
+ if (value == '\t')
+ PRINT ("\\t");
+ else if (value == '\r')
+ PRINT ("\\r");
+ else if (value == '\n')
+ PRINT ("\\n");
+ else if (value > ' ' && value < '~')
+ /* Rust also considers many non-ASCII codepoints to be printable, but
+ that logic is not easily ported to C. */
+ print_str (rdm, (char *) &value, 1);
+ else
+ {
+ PRINT ("\\u{");
+ print_uint64_hex (rdm, value);
+ PRINT ("}");
+ }
+ PRINT ("'");
+}
+
+/* A legacy hash is the prefix "h" followed by 16 lowercase hex digits.
+ The hex digits must contain at least 5 distinct digits. */
static int
-unescape (const char **in, char **out, const char *seq, char value)
+is_legacy_prefixed_hash (struct rust_mangled_ident ident)
+{
+ uint16_t seen;
+ int nibble;
+ size_t i, count;
+
+ if (ident.ascii_len != 17 || ident.ascii[0] != 'h')
+ return 0;
+
+ seen = 0;
+ for (i = 0; i < 16; i++)
+ {
+ nibble = decode_lower_hex_nibble (ident.ascii[1 + i]);
+ if (nibble < 0)
+ return 0;
+ seen |= (uint16_t)1 << nibble;
+ }
+
+ /* Count how many distinct digits were seen. */
+ count = 0;
+ while (seen)
+ {
+ if (seen & 1)
+ count++;
+ seen >>= 1;
+ }
+
+ return count >= 5;
+}
+
+int
+rust_demangle_callback (const char *mangled, int options,
+ demangle_callbackref callback, void *opaque)
{
- size_t len = strlen (seq);
+ const char *p;
+ struct rust_demangler rdm;
+ struct rust_mangled_ident ident;
+
+ rdm.sym = mangled;
+ rdm.sym_len = 0;
+
+ rdm.callback_opaque = opaque;
+ rdm.callback = callback;
+
+ rdm.next = 0;
+ rdm.errored = 0;
+ rdm.skipping_printing = 0;
+ rdm.verbose = (options & DMGL_VERBOSE) != 0;
+ rdm.version = 0;
+ rdm.bound_lifetime_depth = 0;
- if (strncmp (*in, seq, len))
+ /* Rust symbols always start with _R (v0) or _ZN (legacy). */
+ if (rdm.sym[0] == '_' && rdm.sym[1] == 'R')
+ rdm.sym += 2;
+ else if (rdm.sym[0] == '_' && rdm.sym[1] == 'Z' && rdm.sym[2] == 'N')
+ {
+ rdm.sym += 3;
+ rdm.version = -1;
+ }
+ else
return 0;
- **out = value;
+ /* Paths (v0) always start with uppercase characters. */
+ if (rdm.version != -1 && !ISUPPER (rdm.sym[0]))
+ return 0;
+
+ /* Rust symbols (v0) use only [_0-9a-zA-Z] characters. */
+ for (p = rdm.sym; *p; p++)
+ {
+ rdm.sym_len++;
+
+ if (*p == '_' || ISALNUM (*p))
+ continue;
+
+ /* Legacy Rust symbols can also contain [.:$] characters. */
+ if (rdm.version == -1 && (*p == '$' || *p == '.' || *p == ':'))
+ continue;
+
+ return 0;
+ }
+
+ /* Legacy Rust symbols need to be handled separately. */
+ if (rdm.version == -1)
+ {
+ /* Legacy Rust symbols always end with E. */
+ if (!(rdm.sym_len > 0 && rdm.sym[rdm.sym_len - 1] == 'E'))
+ return 0;
+ rdm.sym_len--;
+
+ /* Legacy Rust symbols also always end with a path segment
+ that encodes a 16 hex digit hash, i.e. '17h[a-f0-9]{16}'.
+ This early check, before any parse_ident calls, should
+ quickly filter out most C++ symbols unrelated to Rust. */
+ if (!(rdm.sym_len > 19
+ && !memcmp (&rdm.sym[rdm.sym_len - 19], "17h", 3)))
+ return 0;
+
+ do
+ {
+ ident = parse_ident (&rdm);
+ if (rdm.errored || !ident.ascii)
+ return 0;
+ }
+ while (rdm.next < rdm.sym_len);
+
+ /* The last path segment should be the hash. */
+ if (!is_legacy_prefixed_hash (ident))
+ return 0;
+
+ /* Reset the state for a second pass, to print the symbol. */
+ rdm.next = 0;
+ if (!rdm.verbose && rdm.sym_len > 19)
+ {
+ /* Hide the last segment, containing the hash, if not verbose. */
+ rdm.sym_len -= 19;
+ }
+
+ do
+ {
+ if (rdm.next > 0)
+ print_str (&rdm, "::", 2);
+
+ ident = parse_ident (&rdm);
+ print_ident (&rdm, ident);
+ }
+ while (rdm.next < rdm.sym_len);
+ }
+ else
+ {
+ demangle_path (&rdm, 1);
+
+ /* Skip instantiating crate. */
+ if (!rdm.errored && rdm.next < rdm.sym_len)
+ {
+ rdm.skipping_printing = 1;
+ demangle_path (&rdm, 0);
+ }
+
+ /* It's an error to not reach the end. */
+ rdm.errored |= rdm.next != rdm.sym_len;
+ }
+
+ return !rdm.errored;
+}
+
+/* Growable string buffers. */
+struct str_buf
+{
+ char *ptr;
+ size_t len;
+ size_t cap;
+ int errored;
+};
+
+static void
+str_buf_reserve (struct str_buf *buf, size_t extra)
+{
+ size_t available, min_new_cap, new_cap;
+ char *new_ptr;
+
+ /* Allocation failed before. */
+ if (buf->errored)
+ return;
+
+ available = buf->cap - buf->len;
+
+ if (extra <= available)
+ return;
+
+ min_new_cap = buf->cap + (extra - available);
+
+ /* Check for overflows. */
+ if (min_new_cap < buf->cap)
+ {
+ buf->errored = 1;
+ return;
+ }
+
+ new_cap = buf->cap;
+
+ if (new_cap == 0)
+ new_cap = 4;
+
+ /* Double capacity until sufficiently large. */
+ while (new_cap < min_new_cap)
+ {
+ new_cap *= 2;
+
+ /* Check for overflows. */
+ if (new_cap < buf->cap)
+ {
+ buf->errored = 1;
+ return;
+ }
+ }
+
+ new_ptr = (char *)xrealloc (buf->ptr, new_cap);
+ if (new_ptr == NULL)
+ {
+ free (buf->ptr);
+ buf->ptr = NULL;
+ buf->len = 0;
+ buf->cap = 0;
+ buf->errored = 1;
+ }
+ else
+ {
+ buf->ptr = new_ptr;
+ buf->cap = new_cap;
+ }
+}
+
+static void
+str_buf_append (struct str_buf *buf, const char *data, size_t len)
+{
+ str_buf_reserve (buf, len);
+ if (buf->errored)
+ return;
+
+ memcpy (buf->ptr + buf->len, data, len);
+ buf->len += len;
+}
+
+static void
+str_buf_demangle_callback (const char *data, size_t len, void *opaque)
+{
+ str_buf_append ((struct str_buf *)opaque, data, len);
+}
+
+char *
+rust_demangle (const char *mangled, int options)
+{
+ struct str_buf out;
+ int success;
+
+ out.ptr = NULL;
+ out.len = 0;
+ out.cap = 0;
+ out.errored = 0;
+
+ success = rust_demangle_callback (mangled, options,
+ str_buf_demangle_callback, &out);
- *in += len;
- *out += 1;
+ if (!success)
+ {
+ free (out.ptr);
+ return NULL;
+ }
- return 1;
+ str_buf_append (&out, "\0", 1);
+ return out.ptr;
}
/* <ctype.h> replacement macros.
- Copyright (C) 2000-2017 Free Software Foundation, Inc.
+ Copyright (C) 2000-2021 Free Software Foundation, Inc.
Contributed by Zack Weinberg <zackw@stanford.edu>.
This file is part of the libiberty library.
/* <ctype.h> replacement macros.
- Copyright (C) 2000-2017 Free Software Foundation, Inc.
+ Copyright (C) 2000-2021 Free Software Foundation, Inc.
Contributed by Zack Weinberg <zackw@stanford.edu>.
This file is part of the libiberty library.
#define free(_pt) VG_(arena_free) (VG_AR_DEMANGLE,(_pt))
#define memcmp(_s1,_s2,_sz) VG_(memcmp)((_s1),(_s2),(_sz))
#define memcpy(_dd,_ss,_sz) VG_(memcpy)((_dd),(_ss),(_sz))
+#define memmove(_dd,_ss,_sz) VG_(memmove)((_dd),(_ss),(_sz))
#define memset(_ss,_cc,_sz) VG_(memset)((_ss),(_cc),(_sz))
#define realloc(_cc,_pt,_sz) VG_(arena_realloc)(VG_AR_DEMANGLE,(_cc),(_pt),(_sz))
-#define sprintf(_buf,_fmt,_args...) VG_(sprintf)((_buf),(_fmt),(_args))
+#define sprintf(_buf,_fmt,_args...) VG_(sprintf)((_buf),(_fmt),(_args))
+#define snprintf(_buf,_size,_fmt,_args...) VG_(snprintf)((_buf),(_size),(_fmt),(_args))
#define strcat(_dd,_ss) VG_(strcat)((_dd),(_ss))
#define strchr(_ss,_cc) VG_(strchr)((_ss),(_cc))
#define strcmp(_s1,_s2) VG_(strcmp)((_s1),(_s2))
<frame>
<ip>0x........</ip>
<obj>...</obj>
- 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+ 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<dir>...</dir>
<file>long_namespace_xml.cpp</file>
<line>...</line>
projects / thirdparty / valgrind.git / commitdiff
