/* -*- indented-text -*- */
/* Process source files and output type information.
- Copyright (C) 2002 Free Software Foundation, Inc.
+ Copyright (C) 2002-2014 Free Software Foundation, Inc.
This file is part of GCC.
GCC 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 2, or (at your option) any later
+Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
for more details.
You should have received a copy of the GNU General Public License
-along with GCC; see the file COPYING. If not, write to the Free
-Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-02111-1307, USA. */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
+
+%option noinput
%{
+#ifdef GENERATOR_FILE
+#include "bconfig.h"
+#else
+#include "config.h"
+#endif
+#include "system.h"
+
#define malloc xmalloc
#define realloc xrealloc
-#include "bconfig.h"
-#include "coretypes.h"
-#include "system.h"
-#include "system.h"
#include "gengtype.h"
-#include "gengtype-yacc.h"
-
-#undef YY_USE_PROTOS
-#define YY_DECL int yylex ()
-static void update_lineno PARAMS ((const char *l, size_t len));
+#define YY_DECL int yylex (const char **yylval)
+#define yyterminate() return EOF_TOKEN
struct fileloc lexer_line;
int lexer_toplevel_done;
static void
-update_lineno (l, len)
- const char *l;
- size_t len;
+update_lineno (const char *l, size_t len)
{
while (len-- > 0)
if (*l++ == '\n')
%}
-ID [[:alpha:]_][[:alnum:]_]*
+CID [[:alpha:]_][[:alnum:]_]*
WS [[:space:]]+
-IWORD short|long|(un)?signed|char|int|HOST_WIDE_INT|bool|size_t
+HWS [ \t\r\v\f]*
+IWORD short|long|(un)?signed|char|int|HOST_WIDE_INT|uint64_t|int64_t|bool|size_t|BOOL_BITFIELD|CPPCHAR_SIGNED_T|ino_t|dev_t|HARD_REG_SET
ITYPE {IWORD}({WS}{IWORD})*
+ /* Include '::' in identifiers to capture C++ scope qualifiers. */
+ID {CID}({HWS}::{HWS}{CID})*
+EOID [^[:alnum:]_]
+CXX_KEYWORD inline|public:|private:|protected:|template|operator|friend|static
-%x in_struct in_struct_comment in_comment in_yacc_escape
+%x in_struct in_struct_comment in_comment
%option warn noyywrap nounput nodefault perf-report
%option 8bit never-interactive
%%
+ /* Do this on entry to yylex(): */
+ *yylval = 0;
+ if (lexer_toplevel_done)
+ {
+ BEGIN(INITIAL);
+ lexer_toplevel_done = 0;
+ }
-[^[:alnum:]_]typedef{WS}(struct|union){WS}{ID}{WS}?[*[:space:]]{WS}?{ID}{WS}?";" {
- char *tagstart;
- size_t taglen;
- char *namestart;
- size_t namelen;
- int is_pointer = 0;
- struct type *t;
- int union_p;
-
- tagstart = yytext + strlen (" typedef ");
- while (ISSPACE (*tagstart))
- tagstart++;
- union_p = tagstart[0] == 'u';
- tagstart += strlen ("union ");
- while (ISSPACE (*tagstart))
- tagstart++;
- for (taglen = 1; ISIDNUM (tagstart[taglen]); taglen++)
- ;
- for (namestart = tagstart + taglen;
- ! ISIDNUM (*namestart);
- namestart++)
- if (*namestart == '*')
- is_pointer = 1;
- for (namelen = 1; ISIDNUM (namestart[namelen]); namelen++)
- ;
- t = find_structure (xmemdup (tagstart, taglen, taglen+1), union_p);
- if (is_pointer)
- t = create_pointer (t);
- do_typedef (xmemdup (namestart, namelen, namelen+1), t, &lexer_line);
- update_lineno (yytext, yyleng);
-}
-
-[^[:alnum:]_]typedef{WS}{ITYPE}{WS}{ID}{WS}?";" {
-
- char *namestart;
- size_t namelen;
- struct type *t;
- char *typestart;
- size_t typelen;
-
- for (namestart = yytext + yyleng - 2; ISSPACE (*namestart); namestart--)
- ;
- for (namelen = 1; !ISSPACE (namestart[-namelen]); namelen++)
- ;
- namestart -= namelen - 1;
- for (typestart = yytext + strlen (" typedef ");
- ISSPACE(*typestart);
- typestart++)
- ;
- for (typelen = namestart - typestart;
- ISSPACE(typestart[typelen-1]);
- typelen--)
- ;
-
- t = create_scalar_type (typestart, typelen);
- do_typedef (xmemdup (namestart, namelen, namelen+1), t, &lexer_line);
- update_lineno (yytext, yyleng);
+ /* Things we look for in skipping mode: */
+<INITIAL>{
+^{HWS}typedef/{EOID} {
+ BEGIN(in_struct);
+ return TYPEDEF;
}
-
-[^[:alnum:]_]typedef{WS}{ID}{WS}{ID}{WS}PARAMS {
- char *namestart;
- size_t namelen;
- struct type *t;
-
- for (namestart = yytext + yyleng - 7; ISSPACE (*namestart); namestart--)
- ;
- for (namelen = 1; !ISSPACE (namestart[-namelen]); namelen++)
- ;
- namestart -= namelen - 1;
-
- t = create_scalar_type ("function type", sizeof ("function type")-1);
- do_typedef (xmemdup (namestart, namelen, namelen+1), t, &lexer_line);
- update_lineno (yytext, yyleng);
+^{HWS}struct/{EOID} {
+ BEGIN(in_struct);
+ return STRUCT;
}
-[^[:alnum:]_]typedef{WS}{ID}{WS}?"("{WS}?"*"{WS}?{ID}{WS}?")"{WS}?PARAMS {
- char *namestart;
- size_t namelen;
- struct type *t;
-
- for (namestart = yytext + yyleng - 7; !ISIDNUM (*namestart); namestart--)
- ;
- for (namelen = 1; ISIDNUM (namestart[-namelen]); namelen++)
- ;
- namestart -= namelen - 1;
-
- t = create_scalar_type ("function type", sizeof ("function type")-1);
- do_typedef (xmemdup (namestart, namelen, namelen+1), t, &lexer_line);
- update_lineno (yytext, yyleng);
+^{HWS}union/{EOID} {
+ BEGIN(in_struct);
+ return UNION;
}
-
-[^[:alnum:]_](typedef{WS})?(struct|union){WS}{ID}{WS}/"GTY" {
- char *tagstart;
- size_t taglen;
- int typedef_p;
- int union_p;
-
- typedef_p = yytext[1] == 't';
- if (typedef_p)
- for (tagstart = yytext + strlen (" typedef ");
- ISSPACE(*tagstart);
- tagstart++)
- ;
- else
- tagstart = yytext + 1;
-
- union_p = tagstart[0] == 'u';
- tagstart += strlen ("union ");
- while (ISSPACE (*tagstart))
- tagstart++;
- for (taglen = 1; ISIDNUM (tagstart[taglen]); taglen++)
- ;
-
- yylval.t = find_structure (xmemdup (tagstart, taglen, taglen + 1), union_p);
+^{HWS}class/{EOID} {
BEGIN(in_struct);
- update_lineno (yytext, yyleng);
- return typedef_p ? ENT_TYPEDEF_STRUCT : ENT_STRUCT;
+ return STRUCT;
}
-
-[^[:alnum:]_](extern|static){WS}/"GTY" {
+^{HWS}extern/{EOID} {
BEGIN(in_struct);
- update_lineno (yytext, yyleng);
- return ENT_EXTERNSTATIC;
+ return EXTERN;
}
-
-^"%union"{WS}"{"{WS}/"GTY" {
+^{HWS}static/{EOID} {
BEGIN(in_struct);
- update_lineno (yytext, yyleng);
- return ENT_YACCUNION;
+ return STATIC;
+}
}
+ /* Parsing inside a struct, union or class declaration. */
<in_struct>{
-
"/*" { BEGIN(in_struct_comment); }
-
-^"%{" { BEGIN(in_yacc_escape); }
+"//".*\n { lexer_line.line++; }
{WS} { update_lineno (yytext, yyleng); }
-
-"const"/[^[:alnum:]_] /* don't care */
-
-"GTY"/[^[:alnum:]_] { return GTY_TOKEN; }
-"union"/[^[:alnum:]_] { return UNION; }
-"struct"/[^[:alnum:]_] { return STRUCT; }
-"enum"/[^[:alnum:]_] { return ENUM; }
-"ptr_alias"/[^[:alnum:]_] { return ALIAS; }
+\\\n { lexer_line.line++; }
+
+"const"/{EOID} /* don't care */
+{CXX_KEYWORD}/{EOID} |
+"~" |
+"^" |
+"&" {
+ *yylval = XDUPVAR (const char, yytext, yyleng, yyleng + 1);
+ return IGNORABLE_CXX_KEYWORD;
+}
+"GTY"/{EOID} { return GTY_TOKEN; }
+"union"/{EOID} { return UNION; }
+"struct"/{EOID} { return STRUCT; }
+"class"/{EOID} { return STRUCT; }
+"typedef"/{EOID} { return TYPEDEF; }
+"enum"/{EOID} { return ENUM; }
+"ptr_alias"/{EOID} { return PTR_ALIAS; }
+"nested_ptr"/{EOID} { return NESTED_PTR; }
+"user"/{EOID} { return USER_GTY; }
[0-9]+ { return NUM; }
-"param"[0-9]*"_is"/[^[:alnum:]_] {
- yylval.s = xmemdup (yytext, yyleng, yyleng+1);
+"param"[0-9]*"_is"/{EOID} {
+ *yylval = XDUPVAR (const char, yytext, yyleng, yyleng+1);
return PARAM_IS;
}
-{IWORD}({WS}{IWORD})*/[^[:alnum:]_] |
+{IWORD}({WS}{IWORD})*/{EOID} |
"ENUM_BITFIELD"{WS}?"("{WS}?{ID}{WS}?")" {
size_t len;
for (len = yyleng; ISSPACE (yytext[len-1]); len--)
;
- yylval.t = create_scalar_type (yytext, len);
+ *yylval = XDUPVAR (const char, yytext, len, len+1);
update_lineno (yytext, yyleng);
return SCALAR;
}
-{ID}/[^[:alnum:]_] {
- yylval.s = xmemdup (yytext, yyleng, yyleng+1);
+{ID}/{EOID} {
+ *yylval = XDUPVAR (const char, yytext, yyleng, yyleng+1);
return ID;
}
\"([^"\\]|\\.)*\" {
- yylval.s = xmemdup (yytext+1, yyleng-2, yyleng-1);
+ *yylval = XDUPVAR (const char, yytext+1, yyleng-2, yyleng-1);
return STRING;
}
+ /* This "terminal" avoids having to parse integer constant expressions. */
"["[^\[\]]*"]" {
- yylval.s = xmemdup (yytext+1, yyleng-2, yyleng-1);
+ *yylval = XDUPVAR (const char, yytext+1, yyleng-2, yyleng-1);
return ARRAY;
}
-^"%"{ID} {
- yylval.s = xmemdup (yytext+1, yyleng-1, yyleng);
- return PERCENT_ID;
-}
"'"("\\".|[^\\])"'" {
- yylval.s = xmemdup (yytext+1, yyleng-2, yyleng);
+ *yylval = XDUPVAR (const char, yytext+1, yyleng-2, yyleng);
return CHAR;
}
-[(){},*:<>] { return yytext[0]; }
-
-[;=] {
- if (lexer_toplevel_done)
- {
- BEGIN(INITIAL);
- lexer_toplevel_done = 0;
- }
- return yytext[0];
-}
+"..." { return ELLIPSIS; }
+[(){},*:<>;=%|+\!\?\.-] { return yytext[0]; }
-^"%%" {
- BEGIN(INITIAL);
- return PERCENTPERCENT;
-}
+ /* ignore pp-directives */
+^{HWS}"#"{HWS}[a-z_]+[^\n]*\n {lexer_line.line++;}
. {
error_at_line (&lexer_line, "unexpected character `%s'", yytext);
}
"/*" { BEGIN(in_comment); }
+"//".*\n { lexer_line.line++; }
\n { lexer_line.line++; }
{ID} |
"'"("\\".|[^\\])"'" |
[^*\n] /* do nothing */
"*"/[^/] /* do nothing */
}
+
<in_comment>"*/" { BEGIN(INITIAL); }
<in_struct_comment>"*/" { BEGIN(in_struct); }
-<in_yacc_escape>{
-\n { lexer_line.line++; }
-[^%]{16} |
-[^%] /* do nothing */
-"%"/[^}] /* do nothing */
-"%}" { BEGIN(in_struct); }
-"%" {
- error_at_line (&lexer_line,
- "unterminated %%{; unexpected EOF");
-}
-}
-
-
["/] |
<in_struct_comment,in_comment>"*" {
error_at_line (&lexer_line,
"unterminated comment or string; unexpected EOF");
}
-%%
+^{HWS}"#"{HWS}"define"{WS}"GTY(" /* do nothing */
-void
-yyerror (s)
- const char *s;
-{
- error_at_line (&lexer_line, s);
-}
+%%
void
-parse_file (fname)
- const char *fname;
+yybegin (const char *fname)
{
yyin = fopen (fname, "r");
- lexer_line.file = fname;
- lexer_line.line = 1;
if (yyin == NULL)
{
perror (fname);
exit (1);
}
- if (yyparse() != 0)
- exit (1);
+ lexer_line.file = input_file_by_name (fname);
+ lexer_line.line = 1;
+}
+
+void
+yyend (void)
+{
fclose (yyin);
}