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|
/* -*- indented-text -*- */
/* Process source files and output type information.
Copyright (C) 2002, 2004 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
version.
GCC 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 GCC; see the file COPYING. If not, write to the Free
Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA. */
%{
#include "bconfig.h"
#include "system.h"
#include "coretypes.h"
#include "tm.h"
#include "gengtype.h"
#define YYERROR_VERBOSE
%}
%union {
type_p t;
pair_p p;
options_p o;
const char *s;
}
%token <s>ENT_TYPEDEF_STRUCT
%token <s>ENT_STRUCT
%token <s>ENT_TYPEDEF_UNION
%token <s>ENT_UNION
%token ENT_EXTERNSTATIC
%token GTY_TOKEN
%token VEC_TOKEN
%token UNION
%token STRUCT
%token ENUM
%token ALIAS
%token NESTED_PTR
%token <s>PARAM_IS
%token NUM
%token <s>SCALAR
%token <s>ID
%token <s>STRING
%token <s>ARRAY
%token <s>CHAR
%type <p> struct_fields
%type <t> type lasttype
%type <o> optionsopt options optionseq
%type <s> type_option stringseq
%%
start: /* empty */
| typedef_struct start
| externstatic start
| start
;
typedef_struct: ENT_TYPEDEF_STRUCT options '{' struct_fields '}' ID
{
type_p t = new_structure ($1, false, &lexer_line, $4, $2);
do_typedef ($6, t, &lexer_line);
lexer_toplevel_done = 1;
}
';'
| ENT_TYPEDEF_UNION options '{' struct_fields '}' ID
{
type_p t = new_structure ($1, true, &lexer_line, $4, $2);
do_typedef ($6, t, &lexer_line);
lexer_toplevel_done = 1;
}
';'
| ENT_STRUCT options '{' struct_fields '}'
{
new_structure ($1, false, &lexer_line, $4, $2);
lexer_toplevel_done = 1;
}
';'
| ENT_UNION options '{' struct_fields '}'
{
new_structure ($1, true, &lexer_line, $4, $2);
lexer_toplevel_done = 1;
}
';'
;
externstatic: ENT_EXTERNSTATIC options lasttype ID semiequal
{
note_variable ($4, adjust_field_type ($3, $2), $2,
&lexer_line);
}
| ENT_EXTERNSTATIC options lasttype ID ARRAY semiequal
{
note_variable ($4, create_array ($3, $5),
$2, &lexer_line);
}
| ENT_EXTERNSTATIC options lasttype ID ARRAY ARRAY semiequal
{
note_variable ($4, create_array (create_array ($3, $6),
$5),
$2, &lexer_line);
}
;
lasttype: type
{
lexer_toplevel_done = 1;
$$ = $1;
}
;
semiequal: ';'
| '='
;
struct_fields: { $$ = NULL; }
| type optionsopt ID bitfieldopt ';' struct_fields
{
$$ = create_field_at ($6, $1, $3, $2, &lexer_line);
}
| type optionsopt ID ARRAY ';' struct_fields
{
$$ = create_field_at ($6, create_array ($1, $4),
$3, $2, &lexer_line);
}
| type optionsopt ID ARRAY ARRAY ';' struct_fields
{
type_p arr = create_array (create_array ($1, $5), $4);
$$ = create_field_at ($7, arr, $3, $2, &lexer_line);
}
| type ':' bitfieldlen ';' struct_fields
{ $$ = $5; }
;
bitfieldopt: /* empty */
| ':' bitfieldlen
;
bitfieldlen: NUM | ID
{ }
;
type: SCALAR
{ $$ = create_scalar_type ($1); }
| ID
{ $$ = resolve_typedef ($1, &lexer_line); }
| VEC_TOKEN '(' ID ',' ID ')'
{ $$ = resolve_typedef (concat ("VEC_", $3, "_", $5, (char *)0),
&lexer_line); }
| type '*'
{ $$ = create_pointer ($1); }
| STRUCT ID '{' struct_fields '}'
{ $$ = new_structure ($2, 0, &lexer_line, $4, NULL); }
| STRUCT ID
{ $$ = find_structure ($2, 0); }
| UNION ID '{' struct_fields '}'
{ $$ = new_structure ($2, 1, &lexer_line, $4, NULL); }
| UNION ID
{ $$ = find_structure ($2, 1); }
| ENUM ID
{ $$ = create_scalar_type ($2); }
| ENUM ID '{' enum_items '}'
{ $$ = create_scalar_type ($2); }
;
enum_items: /* empty */
| ID '=' NUM ',' enum_items
{ }
| ID ',' enum_items
{ }
| ID enum_items
{ }
;
optionsopt: { $$ = NULL; }
| options { $$ = $1; }
;
options: GTY_TOKEN '(' '(' optionseq ')' ')'
{ $$ = $4; }
;
type_option : ALIAS
{ $$ = "ptr_alias"; }
| PARAM_IS
{ $$ = $1; }
;
optionseq: { $$ = NULL; }
| optionseq commaopt ID
{ $$ = create_option ($1, $3, (void *)""); }
| optionseq commaopt ID '(' stringseq ')'
{ $$ = create_option ($1, $3, (void *)$5); }
| optionseq commaopt type_option '(' type ')'
{ $$ = create_option ($1, $3, adjust_field_type ($5, 0)); }
| optionseq commaopt NESTED_PTR '(' type ',' stringseq ',' stringseq ')'
{ $$ = create_nested_ptr_option ($1, $5, $7, $9); }
commaopt: /* nothing */
| ','
;
stringseq: STRING
{ $$ = $1; }
| stringseq STRING
{
size_t l1 = strlen ($1);
size_t l2 = strlen ($2);
char *s = XRESIZEVEC (char, $1, l1 + l2 + 1);
memcpy (s + l1, $2, l2 + 1);
XDELETE ($2);
$$ = s;
}
;
%%
|
