--- /dev/null
- struct cleanup *back_to;
- char *ret = cp_comp_to_string (d_left (comp), 10);
+/* Template support for compile.
+
+ Copyright (C) 2016, 2017 Free Software Foundation, Inc.
+
+ This file is part of GDB.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+#include "defs.h"
+#include "compile-internal.h"
+#include "compile-cplus.h"
+#include "cp-support.h"
+#include "demangle.h"
+#include "typeprint.h"
+#include "c-lang.h"
+#include "gdbcmd.h"
+
+#include <algorithm>
+
+using namespace compile;
+
+/* Modifiers for abstract template parameters when used in template function
+ declarations, including CV and ref qualifiers and pointer and reference
+ type modifiers, e.g., const T*. */
+
+enum template_parameter_type_modifier
+{
+ /*/ The abstract parameter type is not qualified at all. */
+ PARAMETER_NONE,
+
+ /* The abstract parameter type was declared `const', const T. */
+ PARAMETER_CONST,
+
+ /* The abstract parameter type was declared `volatile', volatile T. */
+ PARAMETER_VOLATILE,
+
+ /* The abstract parameter type was declared `restrict', restrict T. */
+ PARAMETER_RESTRICT,
+
+ /* The abstract parameter type was declared as a pointer, T*. */
+ PARAMETER_POINTER,
+
+ /* The abstract parameter type was declared as a reference, T&. */
+ PARAMETER_LVALUE_REFERENCE,
+
+ /* The abstract parameter type was declared as rvalue reference,
+ T&&. */
+ PARAMETER_RVALUE_REFERENCE
+};
+typedef enum template_parameter_type_modifier template_parameter_modifier;
+
+/* Forward declarations. */
+
+static void print_template_parameter_list
+ (const struct template_argument_info *arg_info, struct ui_file *stream);
+
+static void print_template_type (const struct demangle_component *comp,
+ const struct template_symbol *tsymbol,
+ struct ui_file *stream);
+
+static void print_conversion_node (const struct demangle_component *comp,
+ const struct template_symbol *tsymbol,
+ struct ui_file *stream);
+
+static void print_function_template_arglist
+ (const struct demangle_component *comp,
+ const struct template_symbol *tsymbol, struct ui_file *stream);
+
+/* See description in compile-cplus-templates.h. */
+
+function_template_defn::function_template_defn
+ (std::string generic, std::unique_ptr<demangle_parse_info> info,
+ const struct template_symbol *tsymbol, struct type *parent_type,
+ int fidx, int midx)
+ : template_defn (compile::decl_name (tsymbol->search_name), generic,
+ tsymbol->template_arguments->n_arguments),
+ m_tsymbol (tsymbol), m_parent_type (parent_type),
+ m_fidx (fidx), m_midx (midx),
+ m_demangle_info (std::move (info))
+{
+}
+
+/* Return a string representing the template declaration for TSYMBOL.
+ All template symbols deriving from the same source declaration should
+ yield the same string representation.
+
+ This string representation is of the generic form
+ RETURN_TYPE QUALIFIED_NAME <parameter list>(argument list), with
+ generic template parameters instead of any instanced type.
+
+ For example, both "void foo<int> (int)" and "void foo<A> (A)" will
+ return "T foo<typename T>(T)". */
+
+static std::string
+function_template_decl (const struct template_symbol *tsymbol,
+ const struct demangle_parse_info *info)
+{
+ gdb_assert (info != NULL);
+
+ string_file stream;
+ struct demangle_component *ret_comp = info->tree;
+
+ if (ret_comp != NULL)
+ {
+ if (ret_comp->type == DEMANGLE_COMPONENT_TYPED_NAME)
+ ret_comp = d_right (ret_comp);
+
+ /* Print out the return type to the stream (if there is one). */
+ if (d_left (ret_comp) != NULL)
+ {
+ if (tsymbol->template_return_index == -1)
+ {
+ struct type *return_type
+ = TYPE_TARGET_TYPE (SYMBOL_TYPE (&tsymbol->base));
+
+ c_print_type (return_type, "", &stream, -1, 0,
+ &type_print_raw_options);
+ }
+ else
+ print_template_type (d_left (ret_comp), tsymbol, &stream);
+ stream.putc (' ');
+ }
+
+ /* Print the name of the template. */
+ if (tsymbol->conversion_operator_index != -1)
+ print_conversion_node (info->tree, tsymbol, &stream);
+ else
+ {
+ stream.puts (tsymbol->search_name);
+ if (tsymbol->search_name[strlen (tsymbol->search_name) - 1] == '<')
+ stream.putc (' ');
+ }
+
+ /* Print out template (generic) arguments. */
+ stream.putc ('<');
+ print_template_parameter_list (tsymbol->template_arguments, &stream);
+ stream.putc ('>');
+
+ /* Print out function arguments. */
+ stream.putc ('(');
+ print_function_template_arglist (ret_comp, tsymbol, &stream);
+ stream.putc (')');
+ }
+
+ return std::move (stream.string ());
+}
+
+/* Compute the generic used by the given function template
+ definition. */
+
+static std::string
+compute_function_template_generic (struct template_symbol *tsymbol,
+ const demangle_parse_info *info)
+{
+ gdb_assert (info->tree != NULL);
+
+ /* Ensure template arguments have been decoded. */
+ cp_decode_template_type_indices (tsymbol, info);
+
+ /* Output the template generic. */
+ return function_template_decl (tsymbol, info);
+}
+
+/* See description in compile-cplus.h. */
+
+void
+compile_cplus_instance::maybe_define_new_function_template
+ (const struct symbol *sym, struct type *parent_type, int f_idx,
+ int m_idx)
+
+{
+ if (sym != NULL && SYMBOL_IS_CPLUS_TEMPLATE_FUNCTION (sym))
+ {
+ struct template_symbol *tsym = (struct template_symbol *) sym;
+
+ if (tsym->linkage_name == NULL)
+ return;
+
+ std::unique_ptr<demangle_parse_info> info
+ = cp_mangled_name_to_comp (tsym->linkage_name, DMGL_ANSI | DMGL_PARAMS);
+
+ std::string generic
+ = compute_function_template_generic (tsym, info.get ());
+ function_template_defn_map_t::iterator pos
+ = m_function_template_defns->find (generic);
+
+ function_template_defn *defn;
+
+ if (pos == m_function_template_defns->end ())
+ {
+ /* Create the new template definition and insert it into
+ the cache. */
+ defn = new function_template_defn (generic, std::move (info), tsym,
+ parent_type, f_idx, m_idx);
+ m_function_template_defns->insert (std::make_pair (generic, defn));
+ }
+ else
+ {
+ /* Or use the existing definition. */
+ defn = pos->second.get ();
+ }
+
+ /* Loop over the template arguments, noting any default values. */
+ for (unsigned int i = 0; i < tsym->template_arguments->n_arguments; ++i)
+ {
+ if (defn->default_argument (i) == NULL
+ && tsym->template_arguments->default_arguments[i] != NULL)
+ {
+ struct symbol *def
+ = tsym->template_arguments->default_arguments[i];
+ defn->set_default_argument (i, def);
+
+ /* We don't want to define them here because it could start
+ emitting template definitions before we're even done
+ collecting the default values. [Easy to demonstrate if the
+ default value is a class.] */
+ }
+ }
+ }
+}
+
+/* See description in compile-cplus-templates.h. */
+
+void
+compile::define_templates (compile_cplus_instance *instance,
+ VEC (block_symbol_d) *symbols)
+{
+ int i;
+ struct block_symbol *elt;
+
+ /* We need to do this in two passes. On the first pass, we collect
+ the list of "unique" template definitions we need (using the template
+ hashing function) and we collect the list of default values for the
+ template (which can only be done after we have a list of all templates).
+ On the second pass, we iterate over the list of templates we need to
+ define, enumerating those definitions (with default values) to the
+ compiler plug-in. */
+
+ for (i = 0; VEC_iterate (block_symbol_d, symbols, i, elt); ++i)
+ instance->maybe_define_new_function_template (elt->symbol, NULL, -1, -1);
+
+ /* From here on out, we MUST have all types declared or defined,
+ otherwise GCC will give us "definition of TYPE in template parameter
+ list." */
+ /* Create any new template definitions we encountered. */
+ instance->emit_function_template_decls ();
+ instance->emit_class_template_decls ();
+}
+
+/* See description in compile-cplus-templates.h. */
+
+function_template_defn *
+compile_cplus_instance::find_function_template_defn
+ (struct template_symbol *tsym)
+{
+ if (tsym->linkage_name == NULL)
+ return NULL;
+
+ std::unique_ptr<demangle_parse_info> info
+ = cp_mangled_name_to_comp (tsym->linkage_name, DMGL_ANSI | DMGL_PARAMS);
+
+ std::string generic = compute_function_template_generic (tsym, info.get ());
+ function_template_defn_map_t::iterator pos
+ = m_function_template_defns->find (generic);
+
+ if (pos != m_function_template_defns->end ())
+ return pos->second.get ();
+
+ return NULL;
+}
+
+/* Compute the generic used by the given function template
+ definition. */
+
+static std::string
+compute_class_template_generic (std::string name, struct type *type)
+{
+ string_file stream;
+
+ /* Format: class|struct|union namespaces::NAME<parameters> */
+ if (TYPE_CODE (type) == TYPE_CODE_STRUCT)
+ {
+ if (TYPE_DECLARED_CLASS (type))
+ stream.puts ("class ");
+ else
+ stream.puts ("struct ");
+ }
+ else
+ {
+ gdb_assert (TYPE_CODE (type) == TYPE_CODE_UNION);
+ stream.puts ("union ");
+ }
+
+ /* Print all namespaces. Note that we do not push the last
+ scope_component -- that's the actual type we are defining. */
+
+ compile::compile_scope scope = type_name_to_scope (TYPE_NAME (type), NULL);
+ std::for_each (scope.begin (), scope.end () - 1, [&] (const auto &comp)
+ {
+ gdb_assert (TYPE_CODE (SYMBOL_TYPE (comp.bsymbol.symbol))
+ == TYPE_CODE_NAMESPACE);
+
+ if (comp.name != CP_ANONYMOUS_NAMESPACE_STR)
+ stream.printf ("%s::", comp.name.c_str ());
+ });
+
+ stream.printf ("%s<", name.c_str ());
+ print_template_parameter_list (TYPE_TEMPLATE_ARGUMENT_INFO (type), &stream);
+ stream.putc ('>');
+
+ return std::move (stream.string ());
+}
+
+/* See description in compile-cplus-templates.h. */
+
+class_template_defn *
+compile_cplus_instance::find_class_template_defn (struct type *type)
+{
+ /* There are no template definitions associated with anonymous types or
+ types without template arguments. */
+ if (TYPE_NAME (type) == NULL || TYPE_TEMPLATE_ARGUMENT_INFO (type) == NULL)
+ return NULL;
+
+ char *name = decl_name (TYPE_NAME (type));
+ struct cleanup *back_to = make_cleanup (xfree, name);
+
+ std::string generic (compute_class_template_generic (name, type));
+ class_template_defn_map_t::iterator pos
+ = m_class_template_defns->find (generic);
+ if (pos != m_class_template_defns->end ())
+ {
+ /* A template generic for this was already defined. */
+ do_cleanups (back_to);
+ return pos->second.get ();
+ }
+
+ /* No generic for this template was found. */
+ do_cleanups (back_to);
+ return NULL;
+}
+
+/* A class providing printing for a single parameter type modifier. */
+
+class one_template_type_modifier_printer
+{
+public:
+ /* Construct a new printer which outputs to STREAM. */
+ explicit one_template_type_modifier_printer (struct ui_file *stream)
+ : m_stream (stream)
+ {
+ }
+
+ /* Unary function to output the modifier. */
+ void operator() (template_parameter_modifier modifier)
+ {
+ switch (modifier)
+ {
+ case PARAMETER_NONE:
+ break;
+
+ case PARAMETER_CONST:
+ fputs_unfiltered (" const", m_stream);
+ break;
+
+ case PARAMETER_VOLATILE:
+ fputs_unfiltered (" volatile", m_stream);
+ break;
+
+ case PARAMETER_RESTRICT:
+ fputs_unfiltered (" restrict", m_stream);
+ break;
+
+ case PARAMETER_POINTER:
+ fputs_unfiltered ("*", m_stream);
+ break;
+
+ case PARAMETER_LVALUE_REFERENCE:
+ fputc_unfiltered ('&', m_stream);
+ break;
+
+ case PARAMETER_RVALUE_REFERENCE:
+ fputs_unfiltered ("&&", m_stream);
+
+ default:
+ gdb_assert_not_reached ("unknown template parameter modifier");
+ }
+ }
+
+private:
+ /* The stream to which to print the modifier. */
+ struct ui_file *m_stream;
+};
+
+/* Print the type modifiers MODIFIERS to STREAM. */
+
+static void
+print_template_type_modifiers
+ (const std::vector<template_parameter_modifier> &modifiers,
+ struct ui_file *stream)
+{
+ one_template_type_modifier_printer printer (stream);
+
+ for (auto &item : modifiers)
+ printer (item);
+}
+
+/* Get the abstract template type described by COMP, returning any
+ type modifiers in MODIFIERS. */
+
+static const struct demangle_component *
+get_template_type (const struct demangle_component *comp,
+ std::vector <template_parameter_modifier> &modifiers)
+{
+ bool done = 0;
+
+ /* This is probably a little too simplistic... */
+ while (!done)
+ {
+ switch (comp->type)
+ {
+ case DEMANGLE_COMPONENT_POINTER:
+ modifiers.insert (modifiers.begin (), PARAMETER_POINTER);
+ comp = d_left (comp);
+ break;
+
+ case DEMANGLE_COMPONENT_REFERENCE:
+ modifiers.insert (modifiers.begin (), PARAMETER_LVALUE_REFERENCE);
+ comp = d_left (comp);
+ break;
+
+ case DEMANGLE_COMPONENT_CONST:
+ modifiers.insert (modifiers.begin (), PARAMETER_CONST);
+ comp = d_left (comp);
+ break;
+
+ case DEMANGLE_COMPONENT_RESTRICT:
+ modifiers.insert (modifiers.begin (), PARAMETER_RESTRICT);
+ comp = d_left (comp);
+ break;
+
+ case DEMANGLE_COMPONENT_VOLATILE:
+ modifiers.insert (modifiers.begin (), PARAMETER_VOLATILE);
+ comp = d_left (comp);
+ break;
+
+ case DEMANGLE_COMPONENT_TEMPLATE_PARAM:
+ default:
+ done = true;
+ break;
+ }
+ }
+
+ return comp;
+}
+
+/* Print the generic parameter type given by COMP from the template symbol
+ TSYMBOL to STREAM. This function prints the generic template parameter
+ type, not the instanced type, e.g., "const T&". */
+
+static void
+print_template_type (const struct demangle_component *comp,
+ const struct template_symbol *tsymbol,
+ struct ui_file *stream)
+{
+ /* Get the template parameter and modifiers. */
+ std::vector<template_parameter_modifier> modifiers;
+ comp = get_template_type (comp, modifiers);
+
+ /* This had better be a template parameter! */
+ gdb_assert (comp->type == DEMANGLE_COMPONENT_TEMPLATE_PARAM);
+
+ /* Using the parameter's index, get the parameter's symbol and print it
+ with modifiers. */
+ long idx = comp->u.s_number.number;
+ struct symbol *sym = tsymbol->template_arguments->arguments[idx];
+
+ fputs_unfiltered (SYMBOL_NATURAL_NAME (sym), stream);
+ print_template_type_modifiers (modifiers, stream);
+}
+
+/* Print the template parameter list of a type/symbol to STREAM. */
+
+static void
+print_template_parameter_list (const struct template_argument_info *arg_info,
+ struct ui_file *stream)
+{
+ for (int i = 0; i < arg_info->n_arguments; ++i)
+ {
+ if (i != 0)
+ fputs_unfiltered (", ", stream);
+
+ switch (arg_info->argument_kinds[i])
+ {
+ case type_parameter:
+ fprintf_unfiltered (stream, "typename %s",
+ SYMBOL_NATURAL_NAME (arg_info->arguments[i]));
+ break;
+
+ case value_parameter:
+ c_print_type (SYMBOL_TYPE (arg_info->arguments[i]), "", stream, -1, 0,
+ &type_print_raw_options);
+ fprintf_unfiltered (stream, " %s",
+ SYMBOL_NATURAL_NAME (arg_info->arguments[i]));
+ break;
+
+ case template_parameter:
+ break;
+
+ case variadic_parameter:
+ break;
+
+ default:
+ gdb_assert_not_reached ("unexpected template parameter kind");
+ }
+ }
+}
+
+/* Print out the generic template function argument list of the template
+ symbol TSYMBOL to STREAM. COMP represents the FUNCTION_TYPE of the
+ demangle tree for TSYMBOL. */
+
+static void
+print_function_template_arglist (const struct demangle_component *comp,
+ const struct template_symbol *tsymbol,
+ struct ui_file *stream)
+{
+ int i, artificials;
+ struct type *ttype = SYMBOL_TYPE (&tsymbol->base);
+
+ for (i = 0, artificials = 0; i < TYPE_NFIELDS (ttype); ++i)
+ {
+ int tidx;
+
+ if (TYPE_FIELD_ARTIFICIAL (ttype, i))
+ {
+ ++artificials;
+ continue;
+ }
+
+ if ((i - artificials) > 0)
+ fputs_unfiltered (", ", stream);
+
+ tidx = tsymbol->template_argument_indices[i - artificials];
+ if (tidx == -1)
+ {
+ /* A concrete type was used to define this argument. */
+ c_print_type (TYPE_FIELD_TYPE (ttype, i), "", stream, -1, 0,
+ &type_print_raw_options);
+ continue;
+ }
+
+ /* The type of this argument was specified by a template parameter,
+ possibly with added CV and ref qualifiers. */
+
+ /* Get the next ARGLIST node and print it. */
+ comp = d_right (comp);
+ gdb_assert (comp != NULL);
+ gdb_assert (comp->type == DEMANGLE_COMPONENT_ARGLIST);
+ print_template_type (d_left (comp), tsymbol, stream);
+ }
+}
+
+/* Print the conversion operator in COMP for the template symbol TSYMBOL
+ to STREAM. */
+
+static void
+print_conversion_node (const struct demangle_component *comp,
+ const struct template_symbol *tsymbol,
+ struct ui_file *stream)
+{
+ while (1)
+ {
+ switch (comp->type)
+ {
+ case DEMANGLE_COMPONENT_TYPED_NAME:
+ case DEMANGLE_COMPONENT_TEMPLATE:
+ comp = d_left (comp);
+ break;
+
+ case DEMANGLE_COMPONENT_QUAL_NAME:
+ {
+ /* Print out the qualified name. */
- back_to = make_cleanup (xfree, ret);
- fprintf_unfiltered (stream, "%s::", ret);
- do_cleanups (back_to);
++ gdb::unique_xmalloc_ptr<char> ret
++ = cp_comp_to_string (d_left (comp), 10);
+
++ fprintf_unfiltered (stream, "%s::", ret.get ());
+
+ /* Follow the rest of the name. */
+ comp = d_right (comp);
+ }
+ break;
+
+ case DEMANGLE_COMPONENT_CONVERSION:
+ fputs_unfiltered ("operator ", stream);
+ print_template_type (d_left (comp), tsymbol, stream);
+ return;
+
+ default:
+ return;
+ }
+ }
+}
+
+/* See description in compile-cplus-templates.h. */
+
+void
+compile_cplus_instance::maybe_define_new_class_template
+ (struct type *type, const char *decl_name)
+{
+ if (TYPE_N_TEMPLATE_ARGUMENTS (type) == 0 || decl_name == NULL)
+ return;
+
+ std::string generic (compute_class_template_generic (decl_name, type));
+ class_template_defn_map_t::iterator pos
+ = m_class_template_defns->find (generic);
+
+ class_template_defn *defn = NULL;
+
+ if (pos == m_class_template_defns->end ())
+ {
+ /* Insert the new template definition into the cache. */
+ defn = new class_template_defn (decl_name, generic, type);
+ m_class_template_defns->insert (std::make_pair (generic, defn));
+ }
+ else
+ {
+ /* If there is an existing definition, use that definition. */
+ defn = pos->second.get ();
+ }
+
+ /* Loop over the template arguments, noting any default values. */
+ for (unsigned int i = 0; i < TYPE_N_TEMPLATE_ARGUMENTS (type); ++i)
+ {
+ if (defn->default_argument (i) == NULL
+ && TYPE_TEMPLATE_DEFAULT_ARGUMENT (type, i) != NULL)
+ {
+ defn->set_default_argument (i,
+ TYPE_TEMPLATE_DEFAULT_ARGUMENT (type, i));
+
+ /* We don't want to define them here because it could start
+ emitting template definitions before we're even done
+ collecting the default values. [Easy to demonstrate if the
+ default value is a class.] */
+ }
+ }
+}
+
+/* See description in compile-cplus-templates.h. */
+
+void
+compile::scan_type_for_function_templates (compile_cplus_instance *instance,
+ struct type *type)
+{
+ for (int i = 0; i < TYPE_NFN_FIELDS (type); ++i)
+ {
+ struct fn_field *methods = TYPE_FN_FIELDLIST1 (type, i);
+
+ for (int j = 0; j < TYPE_FN_FIELDLIST_LENGTH (type, i); ++j)
+ {
+ struct block_symbol sym
+ = lookup_symbol (TYPE_FN_FIELD_PHYSNAME (methods, j),
+ instance->block (), VAR_DOMAIN, NULL);
+
+ instance->maybe_define_new_function_template (sym.symbol, type, i, j);
+ }
+ }
+}
+
+/* Helper function to define and return the `value' of TYPE of the template
+ parameter ARG in compile INSTANCE. */
+
+static gcc_expr
+get_template_argument_value (compile_cplus_instance *instance,
+ gcc_type type, struct symbol *arg)
+{
+ gcc_expr value = 0;
+
+ switch (SYMBOL_CLASS (arg))
+ {
+ /* !!keiths: More (incomplete) fun. */
+ case LOC_CONST:
+ value = instance->build_literal_expr (type, SYMBOL_VALUE (arg));
+ break;
+
+ case LOC_COMPUTED:
+ {
+ struct value *val;
+ struct frame_info *frame = NULL;
+
+ /* !!keiths: I don't think this can happen, but I've been
+ wrong before. */
+ if (symbol_read_needs_frame (arg))
+ {
+ frame = get_selected_frame (NULL);
+ gdb_assert (frame != NULL);
+ }
+ val = read_var_value (arg, instance->block (), frame);
+
+ /* !!keiths: This is a hack, but I don't want to write
+ yet another linkage name translation function. At least
+ not just yet. */
+ value = instance->build_literal_expr (type, value_address (val));
+ }
+ break;
+
+ default:
+ gdb_assert_not_reached
+ ("unhandled template value argument symbol class");
+ }
+
+ return value;
+}
+
+/* Enumerate the template parameters of the generic form of the template
+ definition DEFN into DEST. */
+
+static void
+define_template_parameters_generic
+ (compile_cplus_instance *instance, template_defn *defn,
+ const struct template_argument_info *arg_info,
+ const char *filename, int line)
+{
+ for (int i = 0; i < arg_info->n_arguments; ++i)
+ {
+ const char *id = SYMBOL_NATURAL_NAME (arg_info->arguments[i]);
+
+ switch (arg_info->argument_kinds[i])
+ {
+ case type_parameter:
+ {
+ /* GDB doesn't support variadic templates yet. */
+ int is_pack = 0;
+ gcc_type default_type = 0;
+
+ if (defn->default_argument (i) != NULL)
+ {
+ struct type *type = SYMBOL_TYPE (defn->default_argument (i));
+
+ /* This type must previously have been converted,
+ or GCC will error with "definition of TYPE inside
+ template parameter list." */
+ default_type = instance->convert_type (type);
+ }
+
+ gcc_type abstract_type
+ = instance->build_type_template_parameter (id, is_pack,
+ default_type, filename, line);
+ defn->set_parameter_abstract_type (i, abstract_type);
+ }
+ break;
+
+ case value_parameter:
+ {
+ gcc_expr default_value = 0;
+ struct type *ptype = SYMBOL_TYPE (arg_info->arguments[i]);
+
+ /* Get the argument's type. This type must also have been
+ previously defined (or declared) to prevent errors. */
+ gcc_type abstract_type = instance->convert_type (ptype);
+ defn->set_parameter_abstract_type (i, abstract_type);
+
+ if (defn->default_argument (i) != NULL)
+ {
+ default_value
+ = get_template_argument_value (instance, abstract_type,
+ defn->default_argument (i));
+ }
+
+ instance->build_value_template_parameter (abstract_type, id,
+ default_value,
+ filename, line);
+ }
+ break;
+
+ case template_parameter:
+ /* GDB doesn't support template-template parameters. */
+ break;
+
+ case variadic_parameter:
+ /* GDB doesn't support variadic templates. */
+ break;
+
+ default:
+ gdb_assert_not_reached ("unexpected template parameter kind");
+ }
+ }
+}
+
+/* Populate the `kinds' member of DEST from ARG_INFO. */
+
+static void
+enumerate_template_parameter_kinds
+ (compile_cplus_instance *instance, struct gcc_cp_template_args *dest,
+ const struct template_argument_info *arg_info)
+{
+ for (int i = 0; i < arg_info->n_arguments; ++i)
+ {
+ switch (arg_info->argument_kinds[i])
+ {
+ case type_parameter:
+ dest->kinds[i] = GCC_CP_TPARG_CLASS;
+ break;
+ case value_parameter:
+ dest->kinds[i] = GCC_CP_TPARG_VALUE;
+ break;
+ case template_parameter:
+ dest->kinds[i] = GCC_CP_TPARG_TEMPL;
+ break;
+ case variadic_parameter:
+ dest->kinds[i] = GCC_CP_TPARG_PACK;
+ break;
+ default:
+ gdb_assert_not_reached ("unexpected template parameter kind");
+ }
+ }
+}
+
+/* See description in compile-cplus-templates.h. */
+
+void
+compile_cplus_instance::enumerate_template_arguments
+ (struct gcc_cp_template_args *dest, const template_defn *defn,
+ const struct template_argument_info *arg_info)
+{
+ /* Fill in the parameter kinds. */
+ enumerate_template_parameter_kinds (this, dest, arg_info);
+
+ /* Loop over the arguments, converting parameter types, values, etc
+ into DEST. */
+ for (int i = 0; i < arg_info->n_arguments; ++i)
+ {
+ switch (arg_info->argument_kinds[i])
+ {
+ case type_parameter:
+ {
+ gcc_type type
+ = convert_type (SYMBOL_TYPE (arg_info->arguments[i]));
+
+ dest->elements[i].type = type;
+ }
+ break;
+
+ case value_parameter:
+ {
+ gcc_type type = defn->parameter_abstract_type (i);
+
+ dest->elements[i].value
+ = get_template_argument_value (this, type,
+ arg_info->arguments[i]);
+ }
+ break;
+
+ case template_parameter:
+ break;
+
+ case variadic_parameter:
+ break;
+
+ default:
+ gdb_assert_not_reached ("unexpected template parameter kind");
+ }
+ }
+}
+
+/* Define the type for all default template parameters for the template
+ arguments given by ARGUMENTS. */
+
+static void
+define_default_template_parameter_types
+ (compile_cplus_instance *instance, template_defn *defn,
+ const struct template_argument_info *arg_info)
+{
+ for (int i = 0; i < arg_info->n_arguments; ++i)
+ {
+ if (defn->default_argument (i) != NULL)
+ {
+ switch (arg_info->argument_kinds[i])
+ {
+ case type_parameter:
+ case value_parameter:
+ instance->convert_type (SYMBOL_TYPE (defn->default_argument (i)));
+ break;
+
+ case template_parameter:
+ case variadic_parameter:
+ default:
+ gdb_assert (_("unexpected template parameter kind"));
+ }
+ }
+ }
+}
+
+/* A class to add type modifiers to a given compiler type. */
+
+class template_parameter_type_modifier_adder
+{
+public:
+ template_parameter_type_modifier_adder
+ (compile_cplus_instance *instance, gcc_type the_type)
+ : m_instance (instance), m_flags (0), m_type (the_type)
+ {
+ }
+
+ void operator() (template_parameter_modifier modifier)
+ {
+ switch (modifier)
+ {
+ case PARAMETER_NONE:
+ break;
+
+ case PARAMETER_CONST:
+ m_flags |= GCC_CP_QUALIFIER_CONST;
+ break;
+
+ case PARAMETER_VOLATILE:
+ m_flags |= GCC_CP_QUALIFIER_VOLATILE;
+ break;
+
+ case PARAMETER_RESTRICT:
+ m_flags |= GCC_CP_QUALIFIER_RESTRICT;
+ break;
+
+ case PARAMETER_POINTER:
+ m_type = convert_qualified_base (m_instance, m_type, m_flags);
+ m_type = convert_pointer_base (m_instance, m_type);
+ m_flags = (enum gcc_cp_qualifiers) 0;
+ break;
+
+ case PARAMETER_LVALUE_REFERENCE:
+ m_type = convert_qualified_base (m_instance, m_type, m_flags);
+ m_type = convert_pointer_base (m_instance, m_type);
+ m_flags = (enum gcc_cp_qualifiers) 0;
+ break;
+
+ case PARAMETER_RVALUE_REFERENCE:
+ m_type = convert_qualified_base (m_instance, m_type, m_flags);
+ m_type = convert_reference_base (m_instance, m_type);
+ m_flags = (enum gcc_cp_qualifiers) 0;
+ break;
+
+ default:
+ gdb_assert_not_reached ("unknown template parameter modifier");
+ }
+ }
+
+ /* Returns the modified type. */
+
+ gcc_type type () const
+ {
+ return m_type;
+ }
+
+private:
+ /* The compiler instance into which to define the new type(s). */
+ compile_cplus_instance *m_instance;
+
+ /* The qualifier flags. */
+ gcc_cp_qualifiers_flags m_flags;
+
+ /* The type we are modifying. */
+ gcc_type m_type;
+};
+
+/* Add the modifiers given by MODIFIERS to TYPE. */
+
+static gcc_type
+add_template_type_modifiers
+ (compile_cplus_instance *instance, gcc_type type,
+ const std::vector<template_parameter_modifier> &modifiers)
+{
+ template_parameter_type_modifier_adder adder (instance, type);
+
+ for (auto &item : modifiers)
+ adder (item);
+ return adder.type ();
+}
+
+/* Add the type modifiers described in COMP to BASE_TYPE. */
+
+static gcc_type
+add_type_modifiers (compile_cplus_instance *instance,
+ gcc_type base_type,
+ const struct demangle_component *comp)
+{
+ std::vector<template_parameter_modifier> modifiers;
+
+ get_template_type (comp, modifiers);
+
+ gcc_type result
+ = add_template_type_modifiers (instance, base_type, modifiers);
+
+ return result;
+}
+
+/* A struct to define (to the plug-in) and fill-in the
+ function template definition based on the template instance in SLOT.
+ CALL_DATA should be the compiler instance to use. */
+
+class function_template_definer
+{
+ public:
+
+ function_template_definer (compile_cplus_instance *instance)
+ : m_instance (instance)
+ {
+ }
+
+ void operator() (function_template_defn *defn)
+ {
+ if (defn->defined ())
+ {
+ /* This template has already been defined. Keep looking for more
+ undefined templates. */
+ return;
+ }
+
+ /* Ensure this is one-time operation. */
+ defn->set_defined (true);
+
+ struct fn_field *method_field;
+ struct type *method_type;
+ const struct template_symbol *tsym = defn->template_symbol ();
+ if (defn->parent_type () != NULL
+ && defn->fidx () != -1 && defn->midx () != -1)
+ {
+ struct fn_field *methods
+ = TYPE_FN_FIELDLIST1 (defn->parent_type (), defn->fidx ());
+
+ method_field = &methods[defn->midx ()];
+ method_type = method_field->type;
+ }
+ else
+ {
+ method_field = NULL;
+ method_type = SYMBOL_TYPE (&tsym->base);
+ }
+
+ bool ignore;
+ char *special_name = NULL;
+ const char *id = defn->decl_name ();
+ gdb_assert (!strchr (id, ':'));
+ const char *name = maybe_canonicalize_special_function (id,
+ method_field,
+ method_type,
+ &special_name,
+ &ignore);
+
+ /* Ignore any "ignore" -- we need the template defined even if
+ this specific instance shouldn't emit a template. */
+ struct cleanup *back_to = make_cleanup (null_cleanup, NULL);
+
+ if (special_name != NULL)
+ {
+ make_cleanup (xfree, special_name);
+ name = special_name;
+ }
+
+ gcc_cp_symbol_kind_flags sym_kind = GCC_CP_SYMBOL_FUNCTION;
+
+ if (name != id)
+ sym_kind |= GCC_CP_FLAG_SPECIAL_FUNCTION;
+
+ /* Define any default value types. */
+ define_default_template_parameter_types (m_instance, defn,
+ tsym->template_arguments);
+
+ /* Assess the processing context. */
+ gcc_type result;
+ compile_scope scope
+ = m_instance->new_scope (SYMBOL_NATURAL_NAME (&tsym->base),
+ SYMBOL_TYPE (&tsym->base));
+
+ if (scope.nested_type () != GCC_TYPE_NONE)
+ {
+ do_cleanups (back_to);
+ /* new_scope returned the type of the actual template instance from
+ which we're constructing the template definition. It is already
+ defined. */
+ return;
+ }
+
+ /* Start the new template declaration. */
+ m_instance->enter_scope (scope);
+ m_instance->start_template_decl (defn->generic ().c_str ());
+
+ /* Get the parameters' generic kinds and types. */
+ define_template_parameters_generic (m_instance, defn,
+ tsym->template_arguments,
+ symbol_symtab (&tsym->base)->filename,
+ SYMBOL_LINE (&tsym->base));
+
+ /* Find the function node describing this template function. */
+ gdb_assert (defn->demangle_info ()->tree->type
+ == DEMANGLE_COMPONENT_TYPED_NAME);
+ struct demangle_component *comp = d_right (defn->demangle_info ()->tree);
+
+ gdb_assert (comp->type == DEMANGLE_COMPONENT_FUNCTION_TYPE);
+
+ /* The return type is either a concrete type (TYPE_TARGET_TYPE)
+ or a template parameter. */
+ gcc_type return_type;
+
+ if (tsym->template_return_index != -1)
+ {
+ gcc_type param_type
+ = defn->parameter_abstract_type (tsym->template_return_index);
+
+ return_type
+ = add_type_modifiers (m_instance, param_type, d_left (comp));
+ }
+ else if (tsym->conversion_operator_index != -1)
+ {
+ bool done = false;
+ gcc_type param_type
+ = defn->parameter_abstract_type (tsym->conversion_operator_index);
+
+ /* Conversion operators do not have a return type or arguments,
+ so we need to use the CONVERSION node in the left/name sub-tree
+ of the demangle tree. */
+
+ comp = d_left (defn->demangle_info ()->tree);
+ while (!done)
+ {
+ switch (comp->type)
+ {
+ case DEMANGLE_COMPONENT_TEMPLATE:
+ comp = d_left (comp);
+ break;
+
+ case DEMANGLE_COMPONENT_QUAL_NAME:
+ comp = d_right (comp);
+ break;
+
+ case DEMANGLE_COMPONENT_CONVERSION:
+ default:
+ done = true;
+ break;
+ }
+ }
+
+ /* We had better have found a CONVERSION node if
+ tsym->conversion_operator_index was set! */
+ gdb_assert (comp->type == DEMANGLE_COMPONENT_CONVERSION);
+ return_type = add_type_modifiers (m_instance, param_type,
+ d_left (comp));
+ }
+ else
+ {
+ struct type *temp = TYPE_TARGET_TYPE (SYMBOL_TYPE (&tsym->base));
+
+ return_type = m_instance->convert_type (temp);
+ }
+
+ /* Get the parameters' definitions, and put them into ARRAY. */
+ struct type *templ_type = SYMBOL_TYPE (&tsym->base);
+ int is_varargs = is_varargs_p (templ_type);
+ struct gcc_type_array array;
+
+ array.n_elements = TYPE_NFIELDS (templ_type);
+ array.elements = XNEWVEC (gcc_type, TYPE_NFIELDS (templ_type));
+ make_cleanup (xfree, array.elements);
+
+ int artificials = 0;
+
+ /* d_right (info->tree) is FUNCTION_TYPE (assert above). */
+ comp = d_right (d_right (defn->demangle_info ()->tree));
+ gdb_assert (comp != NULL && comp->type == DEMANGLE_COMPONENT_ARGLIST);
+
+ for (int i = 0; i < TYPE_NFIELDS (templ_type); ++i)
+ {
+ if (TYPE_FIELD_ARTIFICIAL (templ_type, i))
+ {
+ --array.n_elements;
+ ++artificials;
+ }
+ else
+ {
+ int tidx = tsym->template_argument_indices[i - artificials];
+ struct type *arg_type = TYPE_FIELD_TYPE (templ_type, i);
+
+ if (tidx == -1)
+ {
+ /* The parameter's type is a concrete type. */
+ array.elements[i - artificials]
+ = m_instance->convert_type (arg_type);
+ }
+ else
+ {
+ /* The parameter's type is a template parameter. */
+ gcc_type result = defn->parameter_abstract_type (tidx);
+
+ array.elements[i - artificials]
+ = add_type_modifiers (m_instance, result, d_left (comp));
+ }
+
+ /* Move to the next ARGLIST node. */
+ comp = d_right (comp);
+ }
+ }
+
+ gcc_type func_type = m_instance->build_function_type (return_type, &array,
+ is_varargs);
+
+ /* If we have a method, create its type and set additional symbol flags
+ for the compiler. */
+ if (defn->parent_type () != NULL
+ && defn->fidx () != -1 && defn->midx () != -1)
+ {
+ gcc_type class_type;
+ struct fn_field *methods
+ = TYPE_FN_FIELDLIST1 (defn->parent_type (), defn->fidx ());
+
+ /* Get the defining class's type. This should already be in the
+ cache. */
+ class_type = m_instance->convert_type (defn->parent_type ());
+
+ /* Add any virtuality flags. */
+ if (TYPE_FN_FIELD_VIRTUAL_P (methods, defn->midx ()))
+ {
+ sym_kind |= GCC_CP_FLAG_VIRTUAL_FUNCTION;
+
+ /* Unfortunate to have to do a symbol lookup, but this is the only
+ way to know if we have a pure virtual method. */
+ struct block_symbol sym
+ = lookup_symbol (TYPE_FN_FIELD_PHYSNAME (methods, defn->midx ()),
+ m_instance->block (), VAR_DOMAIN, NULL);
+ if (sym.symbol == NULL)
+ {
+ /* !!keiths: The pure virtual hack. See
+ ccp_convert_struct_or_union_methods for more. */
+ sym_kind |= GCC_CP_FLAG_PURE_VIRTUAL_FUNCTION;
+ }
+ }
+
+ /* Add access flags. */
+ sym_kind |= get_method_access_flag (defn->parent_type (),
+ defn->fidx (), defn->midx ());
+
+ /* Create the method type. */
+ if (!TYPE_FN_FIELD_STATIC_P (methods, defn->midx ()))
+ {
+ gcc_cp_qualifiers_flags quals;
+ gcc_cp_ref_qualifiers_flags rquals;
+
+ quals = (enum gcc_cp_qualifiers) 0; /* !!keiths FIXME */
+ rquals = GCC_CP_REF_QUAL_NONE; /* !!keiths FIXME */
+ func_type
+ = m_instance->build_method_type (class_type, func_type, quals,
+ rquals);
+ }
+ }
+
+ /* Finally, define the new generic template declaration. */
+ gcc_decl decl
+ = m_instance->build_decl ("function template", name, sym_kind,
+ func_type, 0, 0,
+ symbol_symtab (&(tsym->base))->filename,
+ SYMBOL_LINE (&(tsym->base)));
+ defn->set_decl (decl);
+
+ m_instance->leave_scope ();
+ do_cleanups (back_to);
+ }
+
+ private:
+
+ /* The compiler instance to use. */
+ compile_cplus_instance *m_instance;
+};
+
+/* See description in compile-cplus-templates.h. */
+
+void
+compile_cplus_instance::emit_function_template_decls ()
+{
+ function_template_definer definer (this);
+
+ for (auto &item : *m_function_template_defns)
+ definer (item.second.get ());
+}
+
+/* A class to define and fill-in class template definitions. */
+
+class class_template_definer
+{
+ public:
+
+ class_template_definer (compile_cplus_instance *instance)
+ : m_instance (instance)
+ {
+ }
+
+ void operator() (class_template_defn *defn)
+ {
+ if (defn->defined ())
+ {
+ /* This template has already been defined. Keep looking for more
+ undefined templates. */
+ return;
+ }
+
+ /* Make sure this is only done once! */
+ defn->set_defined (true);
+
+ /* Define any default value types. */
+ const struct template_argument_info *arg_info
+ = TYPE_TEMPLATE_ARGUMENT_INFO (defn->type ());
+
+ define_default_template_parameter_types (m_instance, defn, arg_info);
+
+ /* Create/push new scope. */
+ compile_scope scope
+ = m_instance->new_scope (TYPE_NAME (defn->type ()), defn->type ());
+
+ if (scope.nested_type () != GCC_TYPE_NONE)
+ {
+ /* new_processing_context returned the type of the actual template
+ instance from which we're constructing the template definition.
+ It is already defined. */
+ return;
+ }
+ m_instance->enter_scope (scope);
+
+ /* Start a new template list for this template. */
+ m_instance->start_template_decl (defn->generic ().c_str ());
+
+ /* Get the parameters' generic kinds and types. */
+ define_template_parameters_generic (m_instance, defn, arg_info,
+ /* filename */ NULL, /*
+ !!keiths FIXME */
+ /* line */ 0
+ /* !!keiths FIXME */
+ );
+
+
+ /* Define the new generic template declaration. */
+ if (TYPE_CODE (defn->type ()) == TYPE_CODE_STRUCT)
+ {
+ gcc_decl decl
+ = m_instance->build_decl ("class template", defn->decl_name (),
+ GCC_CP_SYMBOL_CLASS /* | nested_access? */
+ | (TYPE_DECLARED_CLASS (defn->type ())
+ ? GCC_CP_FLAG_CLASS_NOFLAG
+ : GCC_CP_FLAG_CLASS_IS_STRUCT),
+ 0, NULL, 0, /*filename*/ NULL, /*line*/ 0);
+
+ defn->set_decl (decl);
+ }
+ else
+ {
+ gdb_assert (TYPE_CODE (defn->type ()) == TYPE_CODE_UNION);
+ gcc_decl decl
+ = m_instance->build_decl ("union template", defn->decl_name (),
+ GCC_CP_SYMBOL_UNION /* | nested_access? */,
+ 0, NULL, 0, /*fileanme*/NULL, /*line*/0);
+
+ defn->set_decl (decl);
+ }
+
+ m_instance->leave_scope ();
+ }
+
+ private:
+
+ /* The compiler instance to use. */
+ compile_cplus_instance *m_instance;
+};
+
+/* See description in compile-cplus-templates.h. */
+
+void
+compile_cplus_instance::emit_class_template_decls ()
+{
+ class_template_definer definer (this);
+
+ for (auto &item : *m_class_template_defns)
+ definer (item.second.get ());
+}
+
+/* A command to test function_template_decl. */
+
+static void
+print_template_defn_command (char *arg, int from_tty)
+{
+
+ char *demangled_name
+ = gdb_demangle (arg, DMGL_ANSI | DMGL_PARAMS | DMGL_RET_DROP);
+
+ if (demangled_name == NULL)
+ {
+ fprintf_filtered (gdb_stderr, _("could not demangle \"%s\"\n"), arg);
+ return;
+ }
+
+ struct cleanup *back_to = make_cleanup (xfree, demangled_name);
+ struct block_symbol symbol
+ = lookup_symbol (demangled_name, NULL, VAR_DOMAIN, NULL);
+
+ if (symbol.symbol == NULL)
+ {
+ fprintf_filtered (gdb_stderr, _("could not find symbol for \"%s\"\n"),
+ arg);
+ do_cleanups (back_to);
+ return;
+ }
+
+ if (!SYMBOL_IS_CPLUS_TEMPLATE_FUNCTION (symbol.symbol))
+ {
+ fprintf_filtered (gdb_stderr, _("symbol \"%s\" does not represent a"
+ " template function\n"), arg);
+ do_cleanups (back_to);
+ return;
+ }
+
+ struct template_symbol *tsymbol = (struct template_symbol *) symbol.symbol;
+
+ cp_decode_template_type_indices (tsymbol, NULL);
+
+ std::unique_ptr<demangle_parse_info> info
+ = cp_mangled_name_to_comp (arg, DMGL_ANSI | DMGL_PARAMS);
+ std::string str = function_template_decl (tsymbol, info.get ());
+
+ fprintf_filtered (gdb_stdout, "%s\n", str.c_str ());
+ do_cleanups (back_to);
+}
+
+void _initialize_compile_cplus_templates ();
+
+void
+_initialize_compile_cplus_templates ()
+{
+ add_cmd ("tdef", class_maintenance, print_template_defn_command,
+ _("Print the template generic for the given linkage name."),
+ &maint_cplus_cmd_list);
+}
static VEC (symtab_ptr) *symtabs_from_filename (const char *,
struct program_space *pspace);
-static VEC (symbolp) *find_label_symbols (struct linespec_state *self,
- VEC (symbolp) *function_symbols,
- VEC (symbolp) **label_funcs_ret,
- const char *name,
- bool completion_mode = false);
+static VEC (block_symbol_d) *find_label_symbols
+ (struct linespec_state *self,
+ VEC (block_symbol_d) *function_symbols,
+ VEC (block_symbol_d) **label_funcs_ret,
- const char *name);
++ const char *name,
++ bool completion_mode = false);
static void find_linespec_symbols (struct linespec_state *self,
VEC (symtab_ptr) *file_symtabs,
return sals;
}
- /* Convert the explicit location EXPLICIT_LOC into SaLs. */
+ /* Build RESULT from the explicit location components SOURCE_FILENAME,
+ FUNCTION_NAME, LABEL_NAME and LINE_OFFSET. */
- static struct symtabs_and_lines
- convert_explicit_location_to_sals (struct linespec_state *self,
- linespec_p result,
- const struct explicit_location *explicit_loc)
+ static void
+ convert_explicit_location_to_linespec (struct linespec_state *self,
+ linespec_p result,
+ const char *source_filename,
+ const char *function_name,
+ const char *label_name,
+ struct line_offset line_offset)
{
- VEC (symbolp) *symbols, *labels;
+ VEC (block_symbol_d) *labels;
+ VEC (block_symbol_d) *symbols;
VEC (bound_minimal_symbol_d) *minimal_symbols;
- if (explicit_loc->source_filename != NULL)
+ if (source_filename != NULL)
{
TRY
{
do_cleanups (cleanup);
}
- VEC (symbolp) *label_function_symbols = NULL;
- VEC (symbolp) *labels
+ /* See linespec.h. */
+
+ void
+ linespec_complete_function (completion_tracker &tracker,
+ const char *function,
+ const char *source_filename)
+ {
+ complete_symbol_mode mode = complete_symbol_mode::LINESPEC;
+
+ if (source_filename != NULL)
+ {
+ collect_file_symbol_completion_matches (tracker, mode,
+ function, function,
+ source_filename);
+ }
+ else
+ collect_symbol_completion_matches (tracker, mode, function, function);
+ }
+
+ /* Helper for complete_linespec to simplify it. SOURCE_FILENAME is
+ only meaningful if COMPONENT is FUNCTION. */
+
+ static void
+ complete_linespec_component (linespec_parser *parser,
+ completion_tracker &tracker,
+ const char *text,
+ linespec_complete_what component,
+ const char *source_filename)
+ {
+ if (component == linespec_complete_what::KEYWORD)
+ {
+ complete_on_enum (tracker, linespec_keywords, text, text);
+ }
+ else if (component == linespec_complete_what::EXPRESSION)
+ {
+ const char *word
+ = advance_to_expression_complete_word_point (tracker, text);
+ complete_expression (tracker, text, word);
+ }
+ else if (component == linespec_complete_what::FUNCTION)
+ {
+ completion_list fn_list;
+
+ linespec_complete_function (tracker, text, source_filename);
+ if (source_filename == NULL)
+ {
+ /* Haven't seen a source component, like in "b
+ file.c:function[TAB]". Maybe this wasn't a function, but
+ a filename instead, like "b file.[TAB]". */
+ fn_list = complete_source_filenames (text);
+ }
+
+ /* If we only have a single filename completion, append a ':' for
+ the user, since that's the only thing that can usefully follow
+ the filename. */
+ if (fn_list.size () == 1 && !tracker.have_completions ())
+ {
+ char *fn = fn_list[0].release ();
+
+ /* If we also need to append a quote char, it needs to be
+ appended before the ':'. Append it now, and make ':' the
+ new "quote" char. */
+ if (tracker.quote_char ())
+ {
+ char quote_char_str[2] = { tracker.quote_char () };
+
+ fn = reconcat (fn, fn, quote_char_str, (char *) NULL);
+ tracker.set_quote_char (':');
+ }
+ else
+ fn = reconcat (fn, fn, ":", (char *) NULL);
+ fn_list[0].reset (fn);
+
+ /* Tell readline to skip appending a space. */
+ tracker.set_suppress_append_ws (true);
+ }
+ tracker.add_completions (std::move (fn_list));
+ }
+ }
+
+ /* Helper for linespec_complete_label. Find labels that match
+ LABEL_NAME in the function symbols listed in the PARSER, and add
+ them to the tracker. */
+
+ static void
+ complete_label (completion_tracker &tracker,
+ linespec_parser *parser,
+ const char *label_name)
+ {
- symbol *label;
++ VEC (block_symbol_d) *label_function_symbols = NULL;
++ VEC (block_symbol_d) *labels
+ = find_label_symbols (PARSER_STATE (parser),
+ PARSER_RESULT (parser)->function_symbols,
+ &label_function_symbols,
+ label_name, true);
+
- VEC_iterate (symbolp, labels, ix, label); ++ix)
++ struct block_symbol *label;
+ for (int ix = 0;
- char *match = xstrdup (SYMBOL_SEARCH_NAME (label));
++ VEC_iterate (block_symbol_d, labels, ix, label); ++ix)
+ {
- VEC_free (symbolp, labels);
++ char *match = xstrdup (SYMBOL_SEARCH_NAME (label->symbol));
+ tracker.add_completion (gdb::unique_xmalloc_ptr<char> (match));
+ }
- VEC (symbolp) *function_symbols;
++ VEC_free (block_symbol_d, labels);
+ }
+
+ /* See linespec.h. */
+
+ void
+ linespec_complete_label (completion_tracker &tracker,
+ const struct language_defn *language,
+ const char *source_filename,
+ const char *function_name,
+ const char *label_name)
+ {
+ linespec_parser parser;
+ struct cleanup *cleanup;
+
+ linespec_parser_new (&parser, 0, language, NULL, NULL, 0, NULL);
+ cleanup = make_cleanup (linespec_parser_delete, &parser);
+
+ line_offset unknown_offset = { 0, LINE_OFFSET_UNKNOWN };
+
+ TRY
+ {
+ convert_explicit_location_to_linespec (PARSER_STATE (&parser),
+ PARSER_RESULT (&parser),
+ source_filename,
+ function_name,
+ NULL, unknown_offset);
+ }
+ CATCH (ex, RETURN_MASK_ERROR)
+ {
+ do_cleanups (cleanup);
+ return;
+ }
+ END_CATCH
+
+ complete_label (tracker, &parser, label_name);
+
+ do_cleanups (cleanup);
+ }
+
+ /* See description in linespec.h. */
+
+ void
+ linespec_complete (completion_tracker &tracker, const char *text)
+ {
+ linespec_parser parser;
+ struct cleanup *cleanup;
+ const char *orig = text;
+
+ linespec_parser_new (&parser, 0, current_language, NULL, NULL, 0, NULL);
+ cleanup = make_cleanup (linespec_parser_delete, &parser);
+ parser.lexer.saved_arg = text;
+ PARSER_STREAM (&parser) = text;
+
+ parser.completion_tracker = &tracker;
+ PARSER_STATE (&parser)->is_linespec = 1;
+
+ /* Parse as much as possible. parser.completion_word will hold
+ furthest completion point we managed to parse to. */
+ TRY
+ {
+ parse_linespec (&parser, text);
+ }
+ CATCH (except, RETURN_MASK_ERROR)
+ {
+ }
+ END_CATCH
+
+ if (parser.completion_quote_char != '\0'
+ && parser.completion_quote_end != NULL
+ && parser.completion_quote_end[1] == '\0')
+ {
+ /* If completing a quoted string with the cursor right at
+ terminating quote char, complete the completion word without
+ interpretation, so that readline advances the cursor one
+ whitespace past the quote, even if there's no match. This
+ makes these cases behave the same:
+
+ before: "b function()"
+ after: "b function() "
+
+ before: "b 'function()'"
+ after: "b 'function()' "
+
+ and trusts the user in this case:
+
+ before: "b 'not_loaded_function_yet()'"
+ after: "b 'not_loaded_function_yet()' "
+ */
+ parser.complete_what = linespec_complete_what::NOTHING;
+ parser.completion_quote_char = '\0';
+
+ gdb::unique_xmalloc_ptr<char> text_copy
+ (xstrdup (parser.completion_word));
+ tracker.add_completion (std::move (text_copy));
+ }
+
+ tracker.set_quote_char (parser.completion_quote_char);
+
+ if (parser.complete_what == linespec_complete_what::LABEL)
+ {
+ parser.complete_what = linespec_complete_what::NOTHING;
+
+ const char *func_name = PARSER_EXPLICIT (&parser)->function_name;
+
++ VEC (block_symbol_d) *function_symbols;
+ VEC (bound_minimal_symbol_d) *minimal_symbols;
+ find_linespec_symbols (PARSER_STATE (&parser),
+ PARSER_RESULT (&parser)->file_symtabs,
+ func_name,
+ &function_symbols, &minimal_symbols);
+
+ PARSER_RESULT (&parser)->function_symbols = function_symbols;
+ PARSER_RESULT (&parser)->minimal_symbols = minimal_symbols;
+
+ complete_label (tracker, &parser, parser.completion_word);
+ }
+ else if (parser.complete_what == linespec_complete_what::FUNCTION)
+ {
+ /* While parsing/lexing, we didn't know whether the completion
+ word completes to a unique function/source name already or
+ not.
+
+ E.g.:
+ "b function() <tab>"
+ may need to complete either to:
+ "b function() const"
+ or to:
+ "b function() if/thread/task"
+
+ Or, this:
+ "b foo t"
+ may need to complete either to:
+ "b foo template_fun<T>()"
+ with "foo" being the template function's return type, or to:
+ "b foo thread/task"
+
+ Or, this:
+ "b file<TAB>"
+ may need to complete either to a source file name:
+ "b file.c"
+ or this, also a filename, but a unique completion:
+ "b file.c:"
+ or to a function name:
+ "b file_function"
+
+ Address that by completing assuming source or function, and
+ seeing if we find a completion that matches exactly the
+ completion word. If so, then it must be a function (see note
+ below) and we advance the completion word to the end of input
+ and switch to KEYWORD completion mode.
+
+ Note: if we find a unique completion for a source filename,
+ then it won't match the completion word, because the LCD will
+ contain a trailing ':'. And if we're completing at or after
+ the ':', then complete_linespec_component won't try to
+ complete on source filenames. */
+
+ const char *text = parser.completion_word;
+ const char *word = parser.completion_word;
+
+ complete_linespec_component (&parser, tracker,
+ parser.completion_word,
+ linespec_complete_what::FUNCTION,
+ PARSER_EXPLICIT (&parser)->source_filename);
+
+ parser.complete_what = linespec_complete_what::NOTHING;
+
+ if (tracker.quote_char ())
+ {
+ /* The function/file name was not close-quoted, so this
+ can't be a keyword. Note: complete_linespec_component
+ may have swapped the original quote char for ':' when we
+ get here, but that still indicates the same. */
+ }
+ else if (!tracker.have_completions ())
+ {
+ size_t key_start;
+ size_t wordlen = strlen (parser.completion_word);
+
+ key_start
+ = string_find_incomplete_keyword_at_end (linespec_keywords,
+ parser.completion_word,
+ wordlen);
+
+ if (key_start != -1
+ || (wordlen > 0
+ && parser.completion_word[wordlen - 1] == ' '))
+ {
+ parser.completion_word += key_start;
+ parser.complete_what = linespec_complete_what::KEYWORD;
+ }
+ }
+ else if (tracker.completes_to_completion_word (word))
+ {
+ /* Skip the function and complete on keywords. */
+ parser.completion_word += strlen (word);
+ parser.complete_what = linespec_complete_what::KEYWORD;
+ tracker.discard_completions ();
+ }
+ }
+
+ tracker.advance_custom_word_point_by (parser.completion_word - orig);
+
+ complete_linespec_component (&parser, tracker,
+ parser.completion_word,
+ parser.complete_what,
+ PARSER_EXPLICIT (&parser)->source_filename);
+
+ /* If we're past the "filename:function:label:offset" linespec, and
+ didn't find any match, then assume the user might want to create
+ a pending breakpoint anyway and offer the keyword
+ completions. */
+ if (!parser.completion_quote_char
+ && (parser.complete_what == linespec_complete_what::FUNCTION
+ || parser.complete_what == linespec_complete_what::LABEL
+ || parser.complete_what == linespec_complete_what::NOTHING)
+ && !tracker.have_completions ())
+ {
+ const char *end
+ = parser.completion_word + strlen (parser.completion_word);
+
+ if (end > orig && end[-1] == ' ')
+ {
+ tracker.advance_custom_word_point_by (end - parser.completion_word);
+
+ complete_linespec_component (&parser, tracker, end,
+ linespec_complete_what::KEYWORD,
+ NULL);
+ }
+ }
+
+ do_cleanups (cleanup);
+ }
+
/* A helper function for decode_line_full and decode_line_1 to
turn LOCATION into symtabs_and_lines. */
}
}
- /* Return all labels named NAME in FUNCTION_SYMBOLS. Return the
- actual function symbol in which the label was found in LABEL_FUNC_RET. */
+ /* Helper for find_label_symbols. Find all labels that match name
+ NAME in BLOCK. Return all labels that match in FUNCTION_SYMBOLS.
+ Return the actual function symbol in which the label was found in
+ LABEL_FUNC_RET. If COMPLETION_MODE is true, then NAME is
+ interpreted as a label name prefix. Otherwise, only a label named
+ exactly NAME match. */
+
+ static void
+ find_label_symbols_in_block (const struct block *block,
+ const char *name, struct symbol *fn_sym,
+ bool completion_mode,
- VEC (symbolp) **result,
- VEC (symbolp) **label_funcs_ret)
++ VEC (block_symbol_d) **result,
++ VEC (block_symbol_d) **label_funcs_ret)
+ {
+ if (completion_mode)
+ {
+ struct block_iterator iter;
+ struct symbol *sym;
+ size_t name_len = strlen (name);
+
+ int (*cmp) (const char *, const char *, size_t);
+ cmp = case_sensitivity == case_sensitive_on ? strncmp : strncasecmp;
+
+ ALL_BLOCK_SYMBOLS (block, iter, sym)
+ {
+ if (symbol_matches_domain (SYMBOL_LANGUAGE (sym),
+ SYMBOL_DOMAIN (sym), LABEL_DOMAIN)
+ && cmp (SYMBOL_SEARCH_NAME (sym), name, name_len) == 0)
+ {
- VEC_safe_push (symbolp, *result, sym);
- VEC_safe_push (symbolp, *label_funcs_ret, fn_sym);
++ struct block_symbol label_bsym = {sym, block};
++ struct block_symbol fn_bsym = {fn_sym, block};
++
++ VEC_safe_push (block_symbol_d, *result, &label_bsym);
++ VEC_safe_push (block_symbol_d, *label_funcs_ret, &fn_bsym);
+ }
+ }
+ }
+ else
+ {
- struct symbol *sym = lookup_symbol (name, block, LABEL_DOMAIN, 0).symbol;
++ struct block_symbol label_sym
++ = lookup_symbol (name, block, LABEL_DOMAIN, 0);
+
- if (sym != NULL)
++ if (label_sym.symbol != NULL)
+ {
- VEC_safe_push (symbolp, *result, sym);
- VEC_safe_push (symbolp, *label_funcs_ret, fn_sym);
++ struct block_symbol fn_bsym = {fn_sym, block};
++
++ VEC_safe_push (block_symbol_d, *result, &label_sym);
++ VEC_safe_push (block_symbol_d, *label_funcs_ret, &fn_bsym);
+ }
+ }
+ }
+
+ /* Return all labels that match name NAME in FUNCTION_SYMBOLS. Return
+ the actual function symbol in which the label was found in
+ LABEL_FUNC_RET. If COMPLETION_MODE is true, then NAME is
+ interpreted as a label name prefix. Otherwise, only labels named
+ exactly NAME match. */
-static VEC (symbolp) *
+static VEC (block_symbol_d) *
find_label_symbols (struct linespec_state *self,
- VEC (symbolp) *function_symbols,
- VEC (symbolp) **label_funcs_ret, const char *name,
+ VEC (block_symbol_d) *function_symbols,
- VEC (block_symbol_d) **label_funcs_ret, const char *name)
++ VEC (block_symbol_d) **label_funcs_ret, const char *name,
+ bool completion_mode)
{
int ix;
const struct block *block;
-
- struct symbol *sym;
+ struct symbol *fn_sym;
- VEC (symbolp) *result = NULL;
+ VEC (block_symbol_d) *result = NULL;
if (function_symbols == NULL)
{
- struct block_symbol block_sym;
+ struct block_symbol fn_block_sym;
+
set_current_program_space (self->program_space);
block = get_current_search_block ();
}
else
{
+ struct block_symbol *elt;
+
for (ix = 0;
- VEC_iterate (symbolp, function_symbols, ix, fn_sym); ++ix)
+ VEC_iterate (block_symbol_d, function_symbols, ix, elt); ++ix)
{
- struct symbol *fn_sym = elt->symbol;
- struct block_symbol block_sym;
++ fn_sym = elt->symbol;
+
set_current_program_space (SYMTAB_PSPACE (symbol_symtab (fn_sym)));
block = SYMBOL_BLOCK_VALUE (fn_sym);
- block_sym = lookup_symbol (name, block, LABEL_DOMAIN, 0);
- if (block_sym.symbol != NULL)
- {
- VEC_safe_push (block_symbol_d, result, &block_sym);
- VEC_safe_push (block_symbol_d, *label_funcs_ret, elt);
- }
+ find_label_symbols_in_block (block, name, fn_sym, completion_mode,
+ &result, label_funcs_ret);
}
}
projects / thirdparty / binutils-gdb.git / commitdiff
