2 * Stupid C parser, version 1e-6.
4 * Let's see how hard this is to do.
6 * Copyright (C) 2003 Transmeta Corp.
7 * 2003-2004 Linus Torvalds
8 * Copyright (C) 2004 Christopher Li
10 * Licensed under the Open Software License version 1.1
28 #include "expression.h"
31 #define warn_on_mixed (1)
33 static struct symbol_list
**function_symbol_list
;
34 struct symbol_list
*function_computed_target_list
;
35 struct statement_list
*function_computed_goto_list
;
37 static struct token
*statement(struct token
*token
, struct statement
**tree
);
38 static struct token
*handle_attributes(struct token
*token
, struct ctype
*ctype
, unsigned int keywords
);
40 static struct token
*struct_specifier(struct token
*token
, struct ctype
*ctype
);
41 static struct token
*union_specifier(struct token
*token
, struct ctype
*ctype
);
42 static struct token
*enum_specifier(struct token
*token
, struct ctype
*ctype
);
43 static struct token
*attribute_specifier(struct token
*token
, struct ctype
*ctype
);
44 static struct token
*typeof_specifier(struct token
*token
, struct ctype
*ctype
);
46 static struct token
*parse_if_statement(struct token
*token
, struct statement
*stmt
);
47 static struct token
*parse_return_statement(struct token
*token
, struct statement
*stmt
);
48 static struct token
*parse_loop_iterator(struct token
*token
, struct statement
*stmt
);
49 static struct token
*parse_default_statement(struct token
*token
, struct statement
*stmt
);
50 static struct token
*parse_case_statement(struct token
*token
, struct statement
*stmt
);
51 static struct token
*parse_switch_statement(struct token
*token
, struct statement
*stmt
);
52 static struct token
*parse_for_statement(struct token
*token
, struct statement
*stmt
);
53 static struct token
*parse_while_statement(struct token
*token
, struct statement
*stmt
);
54 static struct token
*parse_do_statement(struct token
*token
, struct statement
*stmt
);
55 static struct token
*parse_goto_statement(struct token
*token
, struct statement
*stmt
);
56 static struct token
*parse_context_statement(struct token
*token
, struct statement
*stmt
);
57 static struct token
*parse_range_statement(struct token
*token
, struct statement
*stmt
);
58 static struct token
*parse_asm_statement(struct token
*token
, struct statement
*stmt
);
59 static struct token
*toplevel_asm_declaration(struct token
*token
, struct symbol_list
**list
);
60 static struct token
*parse_asm_declarator(struct token
*token
, struct ctype
*ctype
);
63 static struct token
*attribute_packed(struct token
*token
, struct symbol
*attr
, struct ctype
*ctype
);
64 static struct token
*attribute_modifier(struct token
*token
, struct symbol
*attr
, struct ctype
*ctype
);
65 static struct token
*attribute_address_space(struct token
*token
, struct symbol
*attr
, struct ctype
*ctype
);
66 static struct token
*attribute_aligned(struct token
*token
, struct symbol
*attr
, struct ctype
*ctype
);
67 static struct token
*attribute_mode(struct token
*token
, struct symbol
*attr
, struct ctype
*ctype
);
68 static struct token
*attribute_context(struct token
*token
, struct symbol
*attr
, struct ctype
*ctype
);
69 static struct token
*attribute_transparent_union(struct token
*token
, struct symbol
*attr
, struct ctype
*ctype
);
70 static struct token
*ignore_attribute(struct token
*token
, struct symbol
*attr
, struct ctype
*ctype
);
73 static struct symbol_op modifier_op
= {
77 static struct symbol_op qualifier_op
= {
81 static struct symbol_op typeof_op
= {
83 .declarator
= typeof_specifier
,
86 static struct symbol_op attribute_op
= {
88 .declarator
= attribute_specifier
,
91 static struct symbol_op struct_op
= {
93 .declarator
= struct_specifier
,
96 static struct symbol_op union_op
= {
98 .declarator
= union_specifier
,
101 static struct symbol_op enum_op
= {
102 .type
= KW_SPECIFIER
,
103 .declarator
= enum_specifier
,
108 static struct symbol_op if_op
= {
109 .statement
= parse_if_statement
,
112 static struct symbol_op return_op
= {
113 .statement
= parse_return_statement
,
116 static struct symbol_op loop_iter_op
= {
117 .statement
= parse_loop_iterator
,
120 static struct symbol_op default_op
= {
121 .statement
= parse_default_statement
,
124 static struct symbol_op case_op
= {
125 .statement
= parse_case_statement
,
128 static struct symbol_op switch_op
= {
129 .statement
= parse_switch_statement
,
132 static struct symbol_op for_op
= {
133 .statement
= parse_for_statement
,
136 static struct symbol_op while_op
= {
137 .statement
= parse_while_statement
,
140 static struct symbol_op do_op
= {
141 .statement
= parse_do_statement
,
144 static struct symbol_op goto_op
= {
145 .statement
= parse_goto_statement
,
148 static struct symbol_op __context___op
= {
149 .statement
= parse_context_statement
,
152 static struct symbol_op range_op
= {
153 .statement
= parse_range_statement
,
156 static struct symbol_op asm_op
= {
158 .declarator
= parse_asm_declarator
,
159 .statement
= parse_asm_statement
,
160 .toplevel
= toplevel_asm_declaration
,
163 static struct symbol_op packed_op
= {
164 .attribute
= attribute_packed
,
167 static struct symbol_op aligned_op
= {
168 .attribute
= attribute_aligned
,
171 static struct symbol_op attr_mod_op
= {
172 .attribute
= attribute_modifier
,
175 static struct symbol_op address_space_op
= {
176 .attribute
= attribute_address_space
,
179 static struct symbol_op mode_op
= {
180 .attribute
= attribute_mode
,
183 static struct symbol_op context_op
= {
184 .attribute
= attribute_context
,
187 static struct symbol_op transparent_union_op
= {
188 .attribute
= attribute_transparent_union
,
191 static struct symbol_op ignore_attr_op
= {
192 .attribute
= ignore_attribute
,
195 static struct symbol_op mode_spec_op
= {
199 static struct init_keyword
{
202 unsigned long modifiers
;
203 struct symbol_op
*op
;
204 } keyword_table
[] = {
205 /* Type qualifiers */
206 { "const", NS_TYPEDEF
, MOD_CONST
, .op
= &qualifier_op
},
207 { "__const", NS_TYPEDEF
, MOD_CONST
, .op
= &qualifier_op
},
208 { "__const__", NS_TYPEDEF
, MOD_CONST
, .op
= &qualifier_op
},
209 { "volatile", NS_TYPEDEF
, MOD_VOLATILE
, .op
= &qualifier_op
},
210 { "__volatile", NS_TYPEDEF
, MOD_VOLATILE
, .op
= &qualifier_op
},
211 { "__volatile__", NS_TYPEDEF
, MOD_VOLATILE
, .op
= &qualifier_op
},
214 { "typedef", NS_TYPEDEF
, MOD_TYPEDEF
, .op
= &modifier_op
},
217 { "typeof", NS_TYPEDEF
, .op
= &typeof_op
},
218 { "__typeof", NS_TYPEDEF
, .op
= &typeof_op
},
219 { "__typeof__", NS_TYPEDEF
, .op
= &typeof_op
},
221 { "__attribute", NS_TYPEDEF
, .op
= &attribute_op
},
222 { "__attribute__", NS_TYPEDEF
, .op
= &attribute_op
},
224 { "struct", NS_TYPEDEF
, .op
= &struct_op
},
225 { "union", NS_TYPEDEF
, .op
= &union_op
},
226 { "enum", NS_TYPEDEF
, .op
= &enum_op
},
228 { "inline", NS_TYPEDEF
, MOD_INLINE
, .op
= &modifier_op
},
229 { "__inline", NS_TYPEDEF
, MOD_INLINE
, .op
= &modifier_op
},
230 { "__inline__", NS_TYPEDEF
, MOD_INLINE
, .op
= &modifier_op
},
232 /* Ignored for now.. */
233 { "restrict", NS_TYPEDEF
, .op
= &qualifier_op
},
234 { "__restrict", NS_TYPEDEF
, .op
= &qualifier_op
},
237 { "if", NS_KEYWORD
, .op
= &if_op
},
238 { "return", NS_KEYWORD
, .op
= &return_op
},
239 { "break", NS_KEYWORD
, .op
= &loop_iter_op
},
240 { "continue", NS_KEYWORD
, .op
= &loop_iter_op
},
241 { "default", NS_KEYWORD
, .op
= &default_op
},
242 { "case", NS_KEYWORD
, .op
= &case_op
},
243 { "switch", NS_KEYWORD
, .op
= &switch_op
},
244 { "for", NS_KEYWORD
, .op
= &for_op
},
245 { "while", NS_KEYWORD
, .op
= &while_op
},
246 { "do", NS_KEYWORD
, .op
= &do_op
},
247 { "goto", NS_KEYWORD
, .op
= &goto_op
},
248 { "__context__",NS_KEYWORD
, .op
= &__context___op
},
249 { "__range__", NS_KEYWORD
, .op
= &range_op
},
250 { "asm", NS_KEYWORD
, .op
= &asm_op
},
251 { "__asm", NS_KEYWORD
, .op
= &asm_op
},
252 { "__asm__", NS_KEYWORD
, .op
= &asm_op
},
255 { "packed", NS_KEYWORD
, .op
= &packed_op
},
256 { "__packed__", NS_KEYWORD
, .op
= &packed_op
},
257 { "aligned", NS_KEYWORD
, .op
= &aligned_op
},
258 { "__aligned__",NS_KEYWORD
, .op
= &aligned_op
},
259 { "nocast", NS_KEYWORD
, MOD_NOCAST
, .op
= &attr_mod_op
},
260 { "noderef", NS_KEYWORD
, MOD_NODEREF
, .op
= &attr_mod_op
},
261 { "safe", NS_KEYWORD
, MOD_SAFE
, .op
= &attr_mod_op
},
262 { "force", NS_KEYWORD
, MOD_FORCE
, .op
= &attr_mod_op
},
263 { "bitwise", NS_KEYWORD
, MOD_BITWISE
, .op
= &attr_mod_op
},
264 { "__bitwise__",NS_KEYWORD
, MOD_BITWISE
, .op
= &attr_mod_op
},
265 { "address_space",NS_KEYWORD
, .op
= &address_space_op
},
266 { "mode", NS_KEYWORD
, .op
= &mode_op
},
267 { "context", NS_KEYWORD
, .op
= &context_op
},
268 { "__transparent_union__", NS_KEYWORD
, .op
= &transparent_union_op
},
270 { "__mode__", NS_KEYWORD
, .op
= &mode_op
},
271 { "QI", NS_KEYWORD
, MOD_CHAR
, .op
= &mode_spec_op
},
272 { "__QI__", NS_KEYWORD
, MOD_CHAR
, .op
= &mode_spec_op
},
273 { "HI", NS_KEYWORD
, MOD_SHORT
, .op
= &mode_spec_op
},
274 { "__HI__", NS_KEYWORD
, MOD_SHORT
, .op
= &mode_spec_op
},
275 { "SI", NS_KEYWORD
, .op
= &mode_spec_op
},
276 { "__SI__", NS_KEYWORD
, .op
= &mode_spec_op
},
277 { "DI", NS_KEYWORD
, MOD_LONGLONG
, .op
= &mode_spec_op
},
278 { "__DI__", NS_KEYWORD
, MOD_LONGLONG
, .op
= &mode_spec_op
},
279 { "word", NS_KEYWORD
, MOD_LONG
, .op
= &mode_spec_op
},
280 { "__word__", NS_KEYWORD
, MOD_LONG
, .op
= &mode_spec_op
},
282 /* Ignored attributes */
283 { "nothrow", NS_KEYWORD
, .op
= &ignore_attr_op
},
284 { "__nothrow", NS_KEYWORD
, .op
= &ignore_attr_op
},
285 { "__nothrow__", NS_KEYWORD
, .op
= &ignore_attr_op
},
286 { "__malloc__", NS_KEYWORD
, .op
= &ignore_attr_op
},
287 { "nonnull", NS_KEYWORD
, .op
= &ignore_attr_op
},
288 { "__nonnull", NS_KEYWORD
, .op
= &ignore_attr_op
},
289 { "__nonnull__", NS_KEYWORD
, .op
= &ignore_attr_op
},
290 { "format", NS_KEYWORD
, .op
= &ignore_attr_op
},
291 { "__format__", NS_KEYWORD
, .op
= &ignore_attr_op
},
292 { "format_arg", NS_KEYWORD
, .op
= &ignore_attr_op
},
293 { "__format_arg__", NS_KEYWORD
, .op
= &ignore_attr_op
},
294 { "section", NS_KEYWORD
, .op
= &ignore_attr_op
},
295 { "__section__",NS_KEYWORD
, .op
= &ignore_attr_op
},
296 { "unused", NS_KEYWORD
, .op
= &ignore_attr_op
},
297 { "__unused__", NS_KEYWORD
, .op
= &ignore_attr_op
},
298 { "const", NS_KEYWORD
, .op
= &ignore_attr_op
},
299 { "__const", NS_KEYWORD
, .op
= &ignore_attr_op
},
300 { "__const__", NS_KEYWORD
, .op
= &ignore_attr_op
},
301 { "noreturn", NS_KEYWORD
, .op
= &ignore_attr_op
},
302 { "__noreturn__", NS_KEYWORD
, .op
= &ignore_attr_op
},
303 { "no_instrument_function", NS_KEYWORD
, .op
= &ignore_attr_op
},
304 { "__no_instrument_function__", NS_KEYWORD
, .op
= &ignore_attr_op
},
305 { "sentinel", NS_KEYWORD
, .op
= &ignore_attr_op
},
306 { "__sentinel__", NS_KEYWORD
, .op
= &ignore_attr_op
},
307 { "regparm", NS_KEYWORD
, .op
= &ignore_attr_op
},
308 { "__regparm__", NS_KEYWORD
, .op
= &ignore_attr_op
},
309 { "weak", NS_KEYWORD
, .op
= &ignore_attr_op
},
310 { "__weak__", NS_KEYWORD
, .op
= &ignore_attr_op
},
311 { "alias", NS_KEYWORD
, .op
= &ignore_attr_op
},
312 { "__alias__", NS_KEYWORD
, .op
= &ignore_attr_op
},
313 { "pure", NS_KEYWORD
, .op
= &ignore_attr_op
},
314 { "__pure__", NS_KEYWORD
, .op
= &ignore_attr_op
},
315 { "always_inline", NS_KEYWORD
, .op
= &ignore_attr_op
},
316 { "__always_inline__", NS_KEYWORD
, .op
= &ignore_attr_op
},
317 { "syscall_linkage", NS_KEYWORD
, .op
= &ignore_attr_op
},
318 { "__syscall_linkage__", NS_KEYWORD
, .op
= &ignore_attr_op
},
319 { "visibility", NS_KEYWORD
, .op
= &ignore_attr_op
},
320 { "__visibility__", NS_KEYWORD
, .op
= &ignore_attr_op
},
321 { "deprecated", NS_KEYWORD
, .op
= &ignore_attr_op
},
322 { "__deprecated__", NS_KEYWORD
, .op
= &ignore_attr_op
},
323 { "noinline", NS_KEYWORD
, .op
= &ignore_attr_op
},
324 { "__noinline__", NS_KEYWORD
, .op
= &ignore_attr_op
},
325 { "used", NS_KEYWORD
, .op
= &ignore_attr_op
},
326 { "__used__", NS_KEYWORD
, .op
= &ignore_attr_op
},
327 { "warn_unused_result", NS_KEYWORD
, .op
= &ignore_attr_op
},
328 { "__warn_unused_result__", NS_KEYWORD
, .op
= &ignore_attr_op
},
329 { "model", NS_KEYWORD
, .op
= &ignore_attr_op
},
330 { "__model__", NS_KEYWORD
, .op
= &ignore_attr_op
},
331 { "cdecl", NS_KEYWORD
, .op
= &ignore_attr_op
},
332 { "__cdecl__", NS_KEYWORD
, .op
= &ignore_attr_op
},
333 { "stdcall", NS_KEYWORD
, .op
= &ignore_attr_op
},
334 { "__stdcall__", NS_KEYWORD
, .op
= &ignore_attr_op
},
335 { "fastcall", NS_KEYWORD
, .op
= &ignore_attr_op
},
336 { "__fastcall__", NS_KEYWORD
, .op
= &ignore_attr_op
},
337 { "dllimport", NS_KEYWORD
, .op
= &ignore_attr_op
},
338 { "__dllimport__", NS_KEYWORD
, .op
= &ignore_attr_op
},
339 { "dllexport", NS_KEYWORD
, .op
= &ignore_attr_op
},
340 { "__dllexport__", NS_KEYWORD
, .op
= &ignore_attr_op
},
341 { "constructor", NS_KEYWORD
, .op
= &ignore_attr_op
},
342 { "__constructor__", NS_KEYWORD
, .op
= &ignore_attr_op
},
343 { "destructor", NS_KEYWORD
, .op
= &ignore_attr_op
},
344 { "__destructor__", NS_KEYWORD
, .op
= &ignore_attr_op
},
347 void init_parser(int stream
)
350 for (i
= 0; i
< sizeof keyword_table
/sizeof keyword_table
[0]; i
++) {
351 struct init_keyword
*ptr
= keyword_table
+ i
;
352 struct symbol
*sym
= create_symbol(stream
, ptr
->name
, SYM_KEYWORD
, ptr
->ns
);
353 sym
->ident
->keyword
= 1;
354 sym
->ctype
.modifiers
= ptr
->modifiers
;
359 // Add a symbol to the list of function-local symbols
360 static void fn_local_symbol(struct symbol
*sym
)
362 if (function_symbol_list
)
363 add_symbol(function_symbol_list
, sym
);
366 static int SENTINEL_ATTR
match_idents(struct token
*token
, ...)
370 if (token_type(token
) != TOKEN_IDENT
)
373 va_start(args
, token
);
375 struct ident
* next
= va_arg(args
, struct ident
*);
378 if (token
->ident
== next
)
384 struct statement
*alloc_statement(struct position pos
, int type
)
386 struct statement
*stmt
= __alloc_statement(0);
392 static struct token
*struct_declaration_list(struct token
*token
, struct symbol_list
**list
);
394 static int apply_modifiers(struct position pos
, struct ctype
*ctype
)
398 while ((base
= ctype
->base_type
)) {
399 switch (base
->type
) {
405 ctype
= &base
->ctype
;
411 /* Turn the "virtual types" into real types with real sizes etc */
412 if (ctype
->base_type
== &int_type
) {
413 ctype
->base_type
= ctype_integer(ctype
->modifiers
);
414 ctype
->modifiers
&= ~MOD_SPECIFIER
;
415 } else if (ctype
->base_type
== &fp_type
) {
416 ctype
->base_type
= ctype_fp(ctype
->modifiers
);
417 ctype
->modifiers
&= ~MOD_SPECIFIER
;
420 if (ctype
->modifiers
& MOD_BITWISE
) {
422 ctype
->modifiers
&= ~(MOD_BITWISE
| MOD_SPECIFIER
);
423 if (!is_int_type(ctype
->base_type
)) {
424 sparse_error(pos
, "invalid modifier");
427 type
= alloc_symbol(pos
, SYM_BASETYPE
);
428 *type
= *ctype
->base_type
;
429 type
->ctype
.base_type
= ctype
->base_type
;
430 type
->type
= SYM_RESTRICT
;
431 type
->ctype
.modifiers
&= ~MOD_SPECIFIER
;
432 ctype
->base_type
= type
;
438 static struct symbol
* alloc_indirect_symbol(struct position pos
, struct ctype
*ctype
, int type
)
440 struct symbol
*sym
= alloc_symbol(pos
, type
);
442 sym
->ctype
.base_type
= ctype
->base_type
;
443 sym
->ctype
.modifiers
= ctype
->modifiers
& ~MOD_STORAGE
;
445 ctype
->base_type
= sym
;
446 ctype
->modifiers
&= MOD_STORAGE
;
450 static struct symbol
*lookup_or_create_symbol(enum namespace ns
, enum type type
, struct token
*token
)
452 struct symbol
*sym
= lookup_symbol(token
->ident
, ns
);
454 sym
= alloc_symbol(token
->pos
, type
);
455 bind_symbol(sym
, token
->ident
, ns
);
456 if (type
== SYM_LABEL
)
457 fn_local_symbol(sym
);
463 * NOTE! NS_LABEL is not just a different namespace,
464 * it also ends up using function scope instead of the
465 * regular symbol scope.
467 struct symbol
*label_symbol(struct token
*token
)
469 return lookup_or_create_symbol(NS_LABEL
, SYM_LABEL
, token
);
472 static struct token
*struct_union_enum_specifier(enum type type
,
473 struct token
*token
, struct ctype
*ctype
,
474 struct token
*(*parse
)(struct token
*, struct symbol
*))
477 struct position
*repos
;
479 ctype
->modifiers
= 0;
480 token
= handle_attributes(token
, ctype
, KW_ATTRIBUTE
| KW_ASM
);
481 if (token_type(token
) == TOKEN_IDENT
) {
482 sym
= lookup_symbol(token
->ident
, NS_STRUCT
);
484 (sym
->scope
!= block_scope
&&
485 (match_op(token
->next
,';') || match_op(token
->next
,'{')))) {
486 // Either a new symbol, or else an out-of-scope
487 // symbol being redefined.
488 sym
= alloc_symbol(token
->pos
, type
);
489 bind_symbol(sym
, token
->ident
, NS_STRUCT
);
491 if (sym
->type
!= type
)
492 error_die(token
->pos
, "invalid tag applied to %s", show_typename (sym
));
493 ctype
->base_type
= sym
;
496 if (match_op(token
, '{')) {
497 // The following test is actually wrong for empty
498 // structs, but (1) they are not C99, (2) gcc does
499 // the same thing, and (3) it's easier.
500 if (sym
->symbol_list
)
501 error_die(token
->pos
, "redefinition of %s", show_typename (sym
));
503 token
= parse(token
->next
, sym
);
504 token
= expect(token
, '}', "at end of struct-union-enum-specifier");
506 // Mark the structure as needing re-examination
512 // private struct/union/enum type
513 if (!match_op(token
, '{')) {
514 sparse_error(token
->pos
, "expected declaration");
515 ctype
->base_type
= &bad_ctype
;
519 sym
= alloc_symbol(token
->pos
, type
);
520 token
= parse(token
->next
, sym
);
521 ctype
->base_type
= sym
;
522 return expect(token
, '}', "at end of specifier");
525 static struct token
*parse_struct_declaration(struct token
*token
, struct symbol
*sym
)
527 return struct_declaration_list(token
, &sym
->symbol_list
);
530 static struct token
*struct_specifier(struct token
*token
, struct ctype
*ctype
)
532 return struct_union_enum_specifier(SYM_STRUCT
, token
, ctype
, parse_struct_declaration
);
535 static struct token
*union_specifier(struct token
*token
, struct ctype
*ctype
)
537 return struct_union_enum_specifier(SYM_UNION
, token
, ctype
, parse_struct_declaration
);
543 unsigned long long y
;
546 static void upper_boundary(Num
*n
, Num
*v
)
558 static void lower_boundary(Num
*n
, Num
*v
)
570 static int type_is_ok(struct symbol
*type
, Num
*upper
, Num
*lower
)
572 int shift
= type
->bit_size
;
573 int is_unsigned
= type
->ctype
.modifiers
& MOD_UNSIGNED
;
577 if (upper
->x
== 0 && upper
->y
>> shift
)
579 if (lower
->x
== 0 || (!is_unsigned
&& (~lower
->y
>> shift
) == 0))
584 static struct symbol
*bigger_enum_type(struct symbol
*s1
, struct symbol
*s2
)
586 if (s1
->bit_size
< s2
->bit_size
) {
588 } else if (s1
->bit_size
== s2
->bit_size
) {
589 if (s2
->ctype
.modifiers
& MOD_UNSIGNED
)
592 if (s1
->bit_size
< bits_in_int
)
597 static void cast_enum_list(struct symbol_list
*list
, struct symbol
*base_type
)
601 FOR_EACH_PTR(list
, sym
) {
602 struct expression
*expr
= sym
->initializer
;
603 struct symbol
*ctype
;
604 if (expr
->type
!= EXPR_VALUE
)
607 if (ctype
->bit_size
== base_type
->bit_size
)
609 cast_value(expr
, base_type
, expr
, ctype
);
610 } END_FOR_EACH_PTR(sym
);
613 static struct token
*parse_enum_declaration(struct token
*token
, struct symbol
*parent
)
615 unsigned long long lastval
= 0;
616 struct symbol
*ctype
= NULL
, *base_type
= NULL
;
617 Num upper
= {-1, 0}, lower
= {1, 0};
618 struct symbol_list
*entries
= NULL
;
620 parent
->examined
= 1;
621 parent
->ctype
.base_type
= &int_ctype
;
622 while (token_type(token
) == TOKEN_IDENT
) {
623 struct expression
*expr
= NULL
;
624 struct token
*next
= token
->next
;
627 sym
= alloc_symbol(token
->pos
, SYM_NODE
);
628 bind_symbol(sym
, token
->ident
, NS_SYMBOL
);
629 sym
->ctype
.modifiers
&= ~MOD_ADDRESSABLE
;
631 if (match_op(next
, '=')) {
632 next
= constant_expression(next
->next
, &expr
);
633 lastval
= get_expression_value(expr
);
635 if (expr
&& expr
->ctype
)
639 } else if (is_int_type(ctype
)) {
642 error_die(token
->pos
, "can't increment the last enum member");
646 expr
= alloc_expression(token
->pos
, EXPR_VALUE
);
647 expr
->value
= lastval
;
651 sym
->initializer
= expr
;
652 sym
->ctype
.base_type
= parent
;
653 add_ptr_list(&entries
, sym
);
655 if (base_type
!= &bad_ctype
) {
656 if (ctype
->type
== SYM_NODE
)
657 ctype
= ctype
->ctype
.base_type
;
658 if (ctype
->type
== SYM_ENUM
) {
662 ctype
= ctype
->ctype
.base_type
;
666 * - if all enums are of the same type, then
667 * the base_type is that type (two first
669 * - if enums are of different types, they
670 * all have to be integer types, and the
671 * base type is at least "int_ctype".
672 * - otherwise the base_type is "bad_ctype".
676 } else if (ctype
== base_type
) {
678 } else if (is_int_type(base_type
) && is_int_type(ctype
)) {
679 base_type
= bigger_enum_type(base_type
, ctype
);
681 base_type
= &bad_ctype
;
682 parent
->ctype
.base_type
= base_type
;
684 if (is_int_type(base_type
)) {
685 Num v
= {.y
= lastval
};
686 if (ctype
->ctype
.modifiers
& MOD_UNSIGNED
)
688 else if ((long long)lastval
>= 0)
692 upper_boundary(&upper
, &v
);
693 lower_boundary(&lower
, &v
);
696 if (!match_op(token
, ','))
701 sparse_error(token
->pos
, "bad enum definition");
702 base_type
= &bad_ctype
;
704 else if (!is_int_type(base_type
))
705 base_type
= base_type
;
706 else if (type_is_ok(base_type
, &upper
, &lower
))
707 base_type
= base_type
;
708 else if (type_is_ok(&int_ctype
, &upper
, &lower
))
709 base_type
= &int_ctype
;
710 else if (type_is_ok(&uint_ctype
, &upper
, &lower
))
711 base_type
= &uint_ctype
;
712 else if (type_is_ok(&long_ctype
, &upper
, &lower
))
713 base_type
= &long_ctype
;
714 else if (type_is_ok(&ulong_ctype
, &upper
, &lower
))
715 base_type
= &ulong_ctype
;
716 else if (type_is_ok(&llong_ctype
, &upper
, &lower
))
717 base_type
= &llong_ctype
;
718 else if (type_is_ok(&ullong_ctype
, &upper
, &lower
))
719 base_type
= &ullong_ctype
;
721 base_type
= &bad_ctype
;
722 parent
->ctype
.base_type
= base_type
;
723 parent
->ctype
.modifiers
|= (base_type
->ctype
.modifiers
& MOD_UNSIGNED
);
724 parent
->examined
= 0;
726 cast_enum_list(entries
, base_type
);
727 free_ptr_list(&entries
);
732 static struct token
*enum_specifier(struct token
*token
, struct ctype
*ctype
)
734 struct token
*ret
= struct_union_enum_specifier(SYM_ENUM
, token
, ctype
, parse_enum_declaration
);
736 ctype
= &ctype
->base_type
->ctype
;
737 if (!ctype
->base_type
)
738 ctype
->base_type
= &incomplete_ctype
;
743 static struct token
*typeof_specifier(struct token
*token
, struct ctype
*ctype
)
747 if (!match_op(token
, '(')) {
748 sparse_error(token
->pos
, "expected '(' after typeof");
751 if (lookup_type(token
->next
)) {
752 token
= typename(token
->next
, &sym
);
755 struct symbol
*typeof_sym
= alloc_symbol(token
->pos
, SYM_TYPEOF
);
756 token
= parse_expression(token
->next
, &typeof_sym
->initializer
);
758 ctype
->modifiers
= 0;
759 ctype
->base_type
= typeof_sym
;
761 return expect(token
, ')', "after typeof");
764 static struct token
*ignore_attribute(struct token
*token
, struct symbol
*attr
, struct ctype
*ctype
)
766 struct expression
*expr
= NULL
;
767 if (match_op(token
, '('))
768 token
= parens_expression(token
, &expr
, "in attribute");
772 static struct token
*attribute_packed(struct token
*token
, struct symbol
*attr
, struct ctype
*ctype
)
774 ctype
->alignment
= 1;
778 static struct token
*attribute_aligned(struct token
*token
, struct symbol
*attr
, struct ctype
*ctype
)
780 int alignment
= max_alignment
;
781 struct expression
*expr
= NULL
;
783 if (match_op(token
, '(')) {
784 token
= parens_expression(token
, &expr
, "in attribute");
786 alignment
= get_expression_value(expr
);
788 ctype
->alignment
= alignment
;
792 static struct token
*attribute_modifier(struct token
*token
, struct symbol
*attr
, struct ctype
*ctype
)
794 ctype
->modifiers
|= attr
->ctype
.modifiers
;
798 static struct token
*attribute_address_space(struct token
*token
, struct symbol
*attr
, struct ctype
*ctype
)
800 struct expression
*expr
= NULL
;
801 token
= expect(token
, '(', "after address_space attribute");
802 token
= conditional_expression(token
, &expr
);
804 ctype
->as
= get_expression_value(expr
);
805 token
= expect(token
, ')', "after address_space attribute");
809 static struct token
*attribute_mode(struct token
*token
, struct symbol
*attr
, struct ctype
*ctype
)
811 token
= expect(token
, '(', "after mode attribute");
812 if (token_type(token
) == TOKEN_IDENT
) {
813 struct symbol
*mode
= lookup_keyword(token
->ident
, NS_KEYWORD
);
814 if (mode
&& mode
->op
->type
== KW_MODE
)
815 ctype
->modifiers
|= mode
->ctype
.modifiers
;
817 sparse_error(token
->pos
, "unknown mode attribute %s\n", show_ident(token
->ident
));
820 sparse_error(token
->pos
, "expect attribute mode symbol\n");
821 token
= expect(token
, ')', "after mode attribute");
825 static struct token
*attribute_context(struct token
*token
, struct symbol
*attr
, struct ctype
*ctype
)
827 struct context
*context
= alloc_context();
828 struct expression
*args
[3];
831 token
= expect(token
, '(', "after context attribute");
832 while (!match_op(token
, ')')) {
833 struct expression
*expr
= NULL
;
834 token
= conditional_expression(token
, &expr
);
839 if (!match_op(token
, ','))
846 sparse_error(token
->pos
, "expected context input/output values");
849 context
->in
= get_expression_value(args
[0]);
852 context
->in
= get_expression_value(args
[0]);
853 context
->out
= get_expression_value(args
[1]);
856 context
->context
= args
[0];
857 context
->in
= get_expression_value(args
[1]);
858 context
->out
= get_expression_value(args
[2]);
863 add_ptr_list(&ctype
->contexts
, context
);
865 token
= expect(token
, ')', "after context attribute");
869 static struct token
*attribute_transparent_union(struct token
*token
, struct symbol
*attr
, struct ctype
*ctype
)
871 if (Wtransparent_union
)
872 sparse_error(token
->pos
, "ignoring attribute __transparent_union__");
876 static struct token
*recover_unknown_attribute(struct token
*token
)
878 struct expression
*expr
= NULL
;
880 sparse_error(token
->pos
, "attribute '%s': unknown attribute", show_ident(token
->ident
));
882 if (match_op(token
, '('))
883 token
= parens_expression(token
, &expr
, "in attribute");
887 static struct token
*attribute_specifier(struct token
*token
, struct ctype
*ctype
)
889 ctype
->modifiers
= 0;
890 token
= expect(token
, '(', "after attribute");
891 token
= expect(token
, '(', "after attribute");
894 struct ident
*attribute_name
;
897 if (eof_token(token
))
899 if (match_op(token
, ';'))
901 if (token_type(token
) != TOKEN_IDENT
)
903 attribute_name
= token
->ident
;
904 attr
= lookup_keyword(attribute_name
, NS_KEYWORD
);
905 if (attr
&& attr
->op
->attribute
)
906 token
= attr
->op
->attribute(token
->next
, attr
, ctype
);
908 token
= recover_unknown_attribute(token
);
910 if (!match_op(token
, ','))
915 token
= expect(token
, ')', "after attribute");
916 token
= expect(token
, ')', "after attribute");
920 struct symbol
* ctype_integer(unsigned long spec
)
922 static struct symbol
*const integer_ctypes
[][3] = {
923 { &llong_ctype
, &sllong_ctype
, &ullong_ctype
},
924 { &long_ctype
, &slong_ctype
, &ulong_ctype
},
925 { &short_ctype
, &sshort_ctype
, &ushort_ctype
},
926 { &char_ctype
, &schar_ctype
, &uchar_ctype
},
927 { &int_ctype
, &sint_ctype
, &uint_ctype
},
929 struct symbol
*const (*ctype
)[3];
932 ctype
= integer_ctypes
;
933 if (!(spec
& MOD_LONGLONG
)) {
935 if (!(spec
& MOD_LONG
)) {
937 if (!(spec
& MOD_SHORT
)) {
939 if (!(spec
& MOD_CHAR
))
945 sub
= ((spec
& MOD_UNSIGNED
)
947 : ((spec
& MOD_EXPLICITLY_SIGNED
)
951 return ctype
[0][sub
];
954 struct symbol
* ctype_fp(unsigned long spec
)
956 if (spec
& MOD_LONGLONG
)
957 return &ldouble_ctype
;
959 return &double_ctype
;
963 static void apply_ctype(struct position pos
, struct ctype
*thistype
, struct ctype
*ctype
)
965 unsigned long mod
= thistype
->modifiers
;
968 unsigned long old
= ctype
->modifiers
;
969 unsigned long extra
= 0, dup
, conflict
;
971 if (mod
& old
& MOD_LONG
) {
972 extra
= MOD_LONGLONG
| MOD_LONG
;
976 dup
= (mod
& old
) | (extra
& old
) | (extra
& mod
);
978 sparse_error(pos
, "Just how %sdo you want this type to be?",
979 modifier_string(dup
));
981 conflict
= !(~mod
& ~old
& (MOD_LONG
| MOD_SHORT
));
983 sparse_error(pos
, "You cannot have both long and short modifiers.");
985 conflict
= !(~mod
& ~old
& (MOD_SIGNED
| MOD_UNSIGNED
));
987 sparse_error(pos
, "You cannot have both signed and unsigned modifiers.");
989 // Only one storage modifier allowed, except that "inline" doesn't count.
990 conflict
= (mod
| old
) & (MOD_STORAGE
& ~MOD_INLINE
);
991 conflict
&= (conflict
- 1);
993 sparse_error(pos
, "multiple storage classes");
995 ctype
->modifiers
= old
| mod
| extra
;
999 concat_ptr_list((struct ptr_list
*)thistype
->contexts
,
1000 (struct ptr_list
**)&ctype
->contexts
);
1003 if (thistype
->alignment
& (thistype
->alignment
-1)) {
1004 warning(pos
, "I don't like non-power-of-2 alignments");
1005 thistype
->alignment
= 0;
1007 if (thistype
->alignment
> ctype
->alignment
)
1008 ctype
->alignment
= thistype
->alignment
;
1012 ctype
->as
= thistype
->as
;
1015 static void check_modifiers(struct position
*pos
, struct symbol
*s
, unsigned long mod
)
1017 unsigned long banned
, wrong
;
1018 const unsigned long BANNED_SIZE
= MOD_LONG
| MOD_LONGLONG
| MOD_SHORT
;
1019 const unsigned long BANNED_SIGN
= MOD_SIGNED
| MOD_UNSIGNED
;
1021 if (s
->type
== SYM_KEYWORD
)
1022 banned
= s
->op
->type
== KW_SPECIFIER
? (BANNED_SIZE
| BANNED_SIGN
) : 0;
1023 else if (s
->ctype
.base_type
== &fp_type
)
1024 banned
= BANNED_SIGN
;
1025 else if (s
->ctype
.base_type
== &int_type
|| !s
->ctype
.base_type
|| is_int_type (s
))
1031 // vector_type <-- whatever that is
1032 banned
= BANNED_SIZE
| BANNED_SIGN
;
1035 wrong
= mod
& banned
;
1037 sparse_error(*pos
, "modifier %sis invalid in this context",
1038 modifier_string (wrong
));
1041 static struct token
*declaration_specifiers(struct token
*next
, struct ctype
*ctype
, int qual
)
1043 struct token
*token
;
1045 while ( (token
= next
) != NULL
) {
1046 struct ctype thistype
;
1047 struct ident
*ident
;
1048 struct symbol
*s
, *type
;
1052 if (token_type(token
) != TOKEN_IDENT
)
1054 ident
= token
->ident
;
1056 s
= lookup_symbol(ident
, NS_TYPEDEF
);
1059 thistype
= s
->ctype
;
1060 mod
= thistype
.modifiers
;
1062 if (s
->type
!= SYM_KEYWORD
)
1064 if (!(s
->op
->type
& (KW_ATTRIBUTE
| KW_QUALIFIER
)))
1067 if (s
->type
== SYM_KEYWORD
&& s
->op
->declarator
) {
1068 next
= s
->op
->declarator(next
, &thistype
);
1069 mod
= thistype
.modifiers
;
1071 type
= thistype
.base_type
;
1075 if (ctype
->base_type
)
1077 /* User types only mix with qualifiers */
1078 if (mod
& MOD_USERTYPE
) {
1079 if (ctype
->modifiers
& MOD_SPECIFIER
)
1082 ctype
->base_type
= type
;
1085 check_modifiers(&token
->pos
, s
, ctype
->modifiers
);
1086 apply_ctype(token
->pos
, &thistype
, ctype
);
1089 if (!ctype
->base_type
) {
1090 struct symbol
*base
= &incomplete_ctype
;
1093 * If we have modifiers, we'll default to an integer
1094 * type, and "ctype_integer()" will turn this into
1097 if (ctype
->modifiers
& MOD_SPECIFIER
)
1099 ctype
->base_type
= base
;
1104 static struct token
*abstract_array_declarator(struct token
*token
, struct symbol
*sym
)
1106 struct expression
*expr
= NULL
;
1108 token
= parse_expression(token
, &expr
);
1109 sym
->array_size
= expr
;
1113 static struct token
*parameter_type_list(struct token
*, struct symbol
*, struct ident
**p
);
1114 static struct token
*declarator(struct token
*token
, struct symbol
*sym
, struct ident
**p
);
1116 static struct token
*handle_attributes(struct token
*token
, struct ctype
*ctype
, unsigned int keywords
)
1118 struct symbol
*keyword
;
1120 struct ctype thistype
= { 0, };
1121 if (token_type(token
) != TOKEN_IDENT
)
1123 keyword
= lookup_keyword(token
->ident
, NS_KEYWORD
| NS_TYPEDEF
);
1124 if (!keyword
|| keyword
->type
!= SYM_KEYWORD
)
1126 if (!(keyword
->op
->type
& keywords
))
1128 token
= keyword
->op
->declarator(token
->next
, &thistype
);
1129 apply_ctype(token
->pos
, &thistype
, ctype
);
1134 static struct token
*direct_declarator(struct token
*token
, struct symbol
*decl
, struct ident
**p
)
1136 struct ctype
*ctype
= &decl
->ctype
;
1138 if (p
&& token_type(token
) == TOKEN_IDENT
) {
1140 token
= token
->next
;
1144 token
= handle_attributes(token
, ctype
, KW_ATTRIBUTE
| KW_ASM
);
1146 if (token_type(token
) != TOKEN_SPECIAL
)
1150 * This can be either a parameter list or a grouping.
1151 * For the direct (non-abstract) case, we know if must be
1152 * a parameter list if we already saw the identifier.
1153 * For the abstract case, we know if must be a parameter
1154 * list if it is empty or starts with a type.
1156 if (token
->special
== '(') {
1158 struct token
*next
= token
->next
;
1161 next
= handle_attributes(next
, ctype
, KW_ATTRIBUTE
);
1162 fn
= (p
&& *p
) || match_op(next
, ')') || lookup_type(next
);
1165 struct symbol
*base_type
= ctype
->base_type
;
1166 token
= declarator(next
, decl
, p
);
1167 token
= expect(token
, ')', "in nested declarator");
1168 while (ctype
->base_type
!= base_type
)
1169 ctype
= &ctype
->base_type
->ctype
;
1174 sym
= alloc_indirect_symbol(token
->pos
, ctype
, SYM_FN
);
1175 token
= parameter_type_list(next
, sym
, p
);
1176 token
= expect(token
, ')', "in function declarator");
1179 if (token
->special
== '[') {
1180 struct symbol
*array
= alloc_indirect_symbol(token
->pos
, ctype
, SYM_ARRAY
);
1181 token
= abstract_array_declarator(token
->next
, array
);
1182 token
= expect(token
, ']', "in abstract_array_declarator");
1183 ctype
= &array
->ctype
;
1191 static struct token
*pointer(struct token
*token
, struct ctype
*ctype
)
1193 unsigned long modifiers
;
1194 struct symbol
*base_type
;
1196 modifiers
= ctype
->modifiers
& ~MOD_TYPEDEF
;
1197 base_type
= ctype
->base_type
;
1198 ctype
->modifiers
= modifiers
;
1200 while (match_op(token
,'*')) {
1201 struct symbol
*ptr
= alloc_symbol(token
->pos
, SYM_PTR
);
1202 ptr
->ctype
.modifiers
= modifiers
& ~MOD_STORAGE
;
1203 ptr
->ctype
.as
= ctype
->as
;
1204 concat_ptr_list((struct ptr_list
*)ctype
->contexts
,
1205 (struct ptr_list
**)&ptr
->ctype
.contexts
);
1206 ptr
->ctype
.base_type
= base_type
;
1209 ctype
->modifiers
= modifiers
& MOD_STORAGE
;
1210 ctype
->base_type
= base_type
;
1212 free_ptr_list(&ctype
->contexts
);
1214 token
= declaration_specifiers(token
->next
, ctype
, 1);
1215 modifiers
= ctype
->modifiers
;
1220 static struct token
*declarator(struct token
*token
, struct symbol
*sym
, struct ident
**p
)
1222 token
= pointer(token
, &sym
->ctype
);
1223 return direct_declarator(token
, sym
, p
);
1226 static struct token
*handle_bitfield(struct token
*token
, struct symbol
*decl
)
1228 struct ctype
*ctype
= &decl
->ctype
;
1229 struct expression
*expr
;
1230 struct symbol
*bitfield
;
1233 if (ctype
->base_type
!= &int_type
&& !is_int_type(ctype
->base_type
)) {
1234 sparse_error(token
->pos
, "invalid bitfield specifier for type %s.",
1235 show_typename(ctype
->base_type
));
1236 // Parse this to recover gracefully.
1237 return conditional_expression(token
->next
, &expr
);
1240 bitfield
= alloc_indirect_symbol(token
->pos
, ctype
, SYM_BITFIELD
);
1241 token
= conditional_expression(token
->next
, &expr
);
1242 width
= get_expression_value(expr
);
1243 bitfield
->bit_size
= width
;
1245 if (width
< 0 || width
> INT_MAX
) {
1246 sparse_error(token
->pos
, "invalid bitfield width, %lld.", width
);
1248 } else if (decl
->ident
&& width
== 0) {
1249 sparse_error(token
->pos
, "invalid named zero-width bitfield `%s'",
1250 show_ident(decl
->ident
));
1252 } else if (decl
->ident
) {
1253 struct symbol
*base_type
= bitfield
->ctype
.base_type
;
1254 struct symbol
*bitfield_type
= base_type
== &int_type
? bitfield
: base_type
;
1255 int is_signed
= !(bitfield_type
->ctype
.modifiers
& MOD_UNSIGNED
);
1256 if (Wone_bit_signed_bitfield
&& width
== 1 && is_signed
) {
1257 // Valid values are either {-1;0} or {0}, depending on integer
1258 // representation. The latter makes for very efficient code...
1259 sparse_error(token
->pos
, "dubious one-bit signed bitfield");
1261 if (Wdefault_bitfield_sign
&&
1262 bitfield_type
->type
!= SYM_ENUM
&&
1263 !(bitfield_type
->ctype
.modifiers
& MOD_EXPLICITLY_SIGNED
) &&
1265 // The sign of bitfields is unspecified by default.
1266 sparse_error(token
->pos
, "dubious bitfield without explicit `signed' or `unsigned'");
1269 bitfield
->bit_size
= width
;
1273 static struct token
*declaration_list(struct token
*token
, struct symbol_list
**list
)
1275 struct ctype ctype
= {0, };
1277 token
= declaration_specifiers(token
, &ctype
, 0);
1279 struct ident
*ident
= NULL
;
1280 struct symbol
*decl
= alloc_symbol(token
->pos
, SYM_NODE
);
1281 decl
->ctype
= ctype
;
1282 token
= declarator(token
, decl
, &ident
);
1283 decl
->ident
= ident
;
1284 if (match_op(token
, ':')) {
1285 token
= handle_bitfield(token
, decl
);
1286 token
= handle_attributes(token
, &decl
->ctype
, KW_ATTRIBUTE
| KW_ASM
);
1288 apply_modifiers(token
->pos
, &decl
->ctype
);
1289 add_symbol(list
, decl
);
1290 if (!match_op(token
, ','))
1292 token
= token
->next
;
1297 static struct token
*struct_declaration_list(struct token
*token
, struct symbol_list
**list
)
1299 while (!match_op(token
, '}')) {
1300 if (!match_op(token
, ';'))
1301 token
= declaration_list(token
, list
);
1302 if (!match_op(token
, ';')) {
1303 sparse_error(token
->pos
, "expected ; at end of declaration");
1306 token
= token
->next
;
1311 static struct token
*parameter_declaration(struct token
*token
, struct symbol
**tree
)
1313 struct ident
*ident
= NULL
;
1315 struct ctype ctype
= { 0, };
1317 token
= declaration_specifiers(token
, &ctype
, 0);
1318 sym
= alloc_symbol(token
->pos
, SYM_NODE
);
1321 token
= declarator(token
, sym
, &ident
);
1323 apply_modifiers(token
->pos
, &sym
->ctype
);
1327 struct token
*typename(struct token
*token
, struct symbol
**p
)
1329 struct symbol
*sym
= alloc_symbol(token
->pos
, SYM_NODE
);
1331 token
= declaration_specifiers(token
, &sym
->ctype
, 0);
1332 token
= declarator(token
, sym
, NULL
);
1333 apply_modifiers(token
->pos
, &sym
->ctype
);
1337 static struct token
*expression_statement(struct token
*token
, struct expression
**tree
)
1339 token
= parse_expression(token
, tree
);
1340 return expect(token
, ';', "at end of statement");
1343 static struct token
*parse_asm_operands(struct token
*token
, struct statement
*stmt
,
1344 struct expression_list
**inout
)
1346 struct expression
*expr
;
1348 /* Allow empty operands */
1349 if (match_op(token
->next
, ':') || match_op(token
->next
, ')'))
1352 struct ident
*ident
= NULL
;
1353 if (match_op(token
->next
, '[') &&
1354 token_type(token
->next
->next
) == TOKEN_IDENT
&&
1355 match_op(token
->next
->next
->next
, ']')) {
1356 ident
= token
->next
->next
->ident
;
1357 token
= token
->next
->next
->next
;
1359 add_expression(inout
, (struct expression
*)ident
); /* UGGLEE!!! */
1360 token
= primary_expression(token
->next
, &expr
);
1361 add_expression(inout
, expr
);
1362 token
= parens_expression(token
, &expr
, "in asm parameter");
1363 add_expression(inout
, expr
);
1364 } while (match_op(token
, ','));
1368 static struct token
*parse_asm_clobbers(struct token
*token
, struct statement
*stmt
,
1369 struct expression_list
**clobbers
)
1371 struct expression
*expr
;
1374 token
= primary_expression(token
->next
, &expr
);
1375 add_expression(clobbers
, expr
);
1376 } while (match_op(token
, ','));
1380 static struct token
*parse_asm_statement(struct token
*token
, struct statement
*stmt
)
1382 token
= token
->next
;
1383 stmt
->type
= STMT_ASM
;
1384 if (match_idents(token
, &__volatile___ident
, &__volatile_ident
, &volatile_ident
, NULL
)) {
1385 token
= token
->next
;
1387 token
= expect(token
, '(', "after asm");
1388 token
= parse_expression(token
, &stmt
->asm_string
);
1389 if (match_op(token
, ':'))
1390 token
= parse_asm_operands(token
, stmt
, &stmt
->asm_outputs
);
1391 if (match_op(token
, ':'))
1392 token
= parse_asm_operands(token
, stmt
, &stmt
->asm_inputs
);
1393 if (match_op(token
, ':'))
1394 token
= parse_asm_clobbers(token
, stmt
, &stmt
->asm_clobbers
);
1395 token
= expect(token
, ')', "after asm");
1396 return expect(token
, ';', "at end of asm-statement");
1399 static struct token
*parse_asm_declarator(struct token
*token
, struct ctype
*ctype
)
1401 struct expression
*expr
;
1402 token
= expect(token
, '(', "after asm");
1403 token
= parse_expression(token
->next
, &expr
);
1404 token
= expect(token
, ')', "after asm");
1408 /* Make a statement out of an expression */
1409 static struct statement
*make_statement(struct expression
*expr
)
1411 struct statement
*stmt
;
1415 stmt
= alloc_statement(expr
->pos
, STMT_EXPRESSION
);
1416 stmt
->expression
= expr
;
1421 * All iterators have two symbols associated with them:
1422 * the "continue" and "break" symbols, which are targets
1423 * for continue and break statements respectively.
1425 * They are in a special name-space, but they follow
1426 * all the normal visibility rules, so nested iterators
1427 * automatically work right.
1429 static void start_iterator(struct statement
*stmt
)
1431 struct symbol
*cont
, *brk
;
1433 start_symbol_scope();
1434 cont
= alloc_symbol(stmt
->pos
, SYM_NODE
);
1435 bind_symbol(cont
, &continue_ident
, NS_ITERATOR
);
1436 brk
= alloc_symbol(stmt
->pos
, SYM_NODE
);
1437 bind_symbol(brk
, &break_ident
, NS_ITERATOR
);
1439 stmt
->type
= STMT_ITERATOR
;
1440 stmt
->iterator_break
= brk
;
1441 stmt
->iterator_continue
= cont
;
1442 fn_local_symbol(brk
);
1443 fn_local_symbol(cont
);
1446 static void end_iterator(struct statement
*stmt
)
1451 static struct statement
*start_function(struct symbol
*sym
)
1454 struct statement
*stmt
= alloc_statement(sym
->pos
, STMT_COMPOUND
);
1456 start_function_scope();
1457 ret
= alloc_symbol(sym
->pos
, SYM_NODE
);
1458 ret
->ctype
= sym
->ctype
.base_type
->ctype
;
1459 ret
->ctype
.modifiers
&= ~(MOD_STORAGE
| MOD_CONST
| MOD_VOLATILE
| MOD_INLINE
| MOD_ADDRESSABLE
| MOD_NOCAST
| MOD_NODEREF
| MOD_ACCESSED
| MOD_TOPLEVEL
);
1460 ret
->ctype
.modifiers
|= (MOD_AUTO
| MOD_REGISTER
);
1461 bind_symbol(ret
, &return_ident
, NS_ITERATOR
);
1463 fn_local_symbol(ret
);
1465 // Currently parsed symbol for __func__/__FUNCTION__/__PRETTY_FUNCTION__
1471 static void end_function(struct symbol
*sym
)
1474 end_function_scope();
1478 * A "switch()" statement, like an iterator, has a
1479 * the "break" symbol associated with it. It works
1480 * exactly like the iterator break - it's the target
1481 * for any break-statements in scope, and means that
1482 * "break" handling doesn't even need to know whether
1483 * it's breaking out of an iterator or a switch.
1485 * In addition, the "case" symbol is a marker for the
1486 * case/default statements to find the switch statement
1487 * that they are associated with.
1489 static void start_switch(struct statement
*stmt
)
1491 struct symbol
*brk
, *switch_case
;
1493 start_symbol_scope();
1494 brk
= alloc_symbol(stmt
->pos
, SYM_NODE
);
1495 bind_symbol(brk
, &break_ident
, NS_ITERATOR
);
1497 switch_case
= alloc_symbol(stmt
->pos
, SYM_NODE
);
1498 bind_symbol(switch_case
, &case_ident
, NS_ITERATOR
);
1499 switch_case
->stmt
= stmt
;
1501 stmt
->type
= STMT_SWITCH
;
1502 stmt
->switch_break
= brk
;
1503 stmt
->switch_case
= switch_case
;
1505 fn_local_symbol(brk
);
1506 fn_local_symbol(switch_case
);
1509 static void end_switch(struct statement
*stmt
)
1511 if (!stmt
->switch_case
->symbol_list
)
1512 warning(stmt
->pos
, "switch with no cases");
1516 static void add_case_statement(struct statement
*stmt
)
1518 struct symbol
*target
= lookup_symbol(&case_ident
, NS_ITERATOR
);
1522 sparse_error(stmt
->pos
, "not in switch scope");
1523 stmt
->type
= STMT_NONE
;
1526 sym
= alloc_symbol(stmt
->pos
, SYM_NODE
);
1527 add_symbol(&target
->symbol_list
, sym
);
1529 stmt
->case_label
= sym
;
1530 fn_local_symbol(sym
);
1533 static struct token
*parse_return_statement(struct token
*token
, struct statement
*stmt
)
1535 struct symbol
*target
= lookup_symbol(&return_ident
, NS_ITERATOR
);
1538 error_die(token
->pos
, "internal error: return without a function target");
1539 stmt
->type
= STMT_RETURN
;
1540 stmt
->ret_target
= target
;
1541 return expression_statement(token
->next
, &stmt
->ret_value
);
1544 static struct token
*parse_for_statement(struct token
*token
, struct statement
*stmt
)
1546 struct symbol_list
*syms
;
1547 struct expression
*e1
, *e2
, *e3
;
1548 struct statement
*iterator
;
1550 start_iterator(stmt
);
1551 token
= expect(token
->next
, '(', "after 'for'");
1555 /* C99 variable declaration? */
1556 if (lookup_type(token
)) {
1557 token
= external_declaration(token
, &syms
);
1559 token
= parse_expression(token
, &e1
);
1560 token
= expect(token
, ';', "in 'for'");
1562 token
= parse_expression(token
, &e2
);
1563 token
= expect(token
, ';', "in 'for'");
1564 token
= parse_expression(token
, &e3
);
1565 token
= expect(token
, ')', "in 'for'");
1566 token
= statement(token
, &iterator
);
1568 stmt
->iterator_syms
= syms
;
1569 stmt
->iterator_pre_statement
= make_statement(e1
);
1570 stmt
->iterator_pre_condition
= e2
;
1571 stmt
->iterator_post_statement
= make_statement(e3
);
1572 stmt
->iterator_post_condition
= NULL
;
1573 stmt
->iterator_statement
= iterator
;
1579 static struct token
*parse_while_statement(struct token
*token
, struct statement
*stmt
)
1581 struct expression
*expr
;
1582 struct statement
*iterator
;
1584 start_iterator(stmt
);
1585 token
= parens_expression(token
->next
, &expr
, "after 'while'");
1586 token
= statement(token
, &iterator
);
1588 stmt
->iterator_pre_condition
= expr
;
1589 stmt
->iterator_post_condition
= NULL
;
1590 stmt
->iterator_statement
= iterator
;
1596 static struct token
*parse_do_statement(struct token
*token
, struct statement
*stmt
)
1598 struct expression
*expr
;
1599 struct statement
*iterator
;
1601 start_iterator(stmt
);
1602 token
= statement(token
->next
, &iterator
);
1603 if (token_type(token
) == TOKEN_IDENT
&& token
->ident
== &while_ident
)
1604 token
= token
->next
;
1606 sparse_error(token
->pos
, "expected 'while' after 'do'");
1607 token
= parens_expression(token
, &expr
, "after 'do-while'");
1609 stmt
->iterator_post_condition
= expr
;
1610 stmt
->iterator_statement
= iterator
;
1613 if (iterator
&& iterator
->type
!= STMT_COMPOUND
&& Wdo_while
)
1614 warning(iterator
->pos
, "do-while statement is not a compound statement");
1616 return expect(token
, ';', "after statement");
1619 static struct token
*parse_if_statement(struct token
*token
, struct statement
*stmt
)
1621 stmt
->type
= STMT_IF
;
1622 token
= parens_expression(token
->next
, &stmt
->if_conditional
, "after if");
1623 token
= statement(token
, &stmt
->if_true
);
1624 if (token_type(token
) != TOKEN_IDENT
)
1626 if (token
->ident
!= &else_ident
)
1628 return statement(token
->next
, &stmt
->if_false
);
1631 static inline struct token
*case_statement(struct token
*token
, struct statement
*stmt
)
1633 stmt
->type
= STMT_CASE
;
1634 token
= expect(token
, ':', "after default/case");
1635 add_case_statement(stmt
);
1636 return statement(token
, &stmt
->case_statement
);
1639 static struct token
*parse_case_statement(struct token
*token
, struct statement
*stmt
)
1641 token
= parse_expression(token
->next
, &stmt
->case_expression
);
1642 if (match_op(token
, SPECIAL_ELLIPSIS
))
1643 token
= parse_expression(token
->next
, &stmt
->case_to
);
1644 return case_statement(token
, stmt
);
1647 static struct token
*parse_default_statement(struct token
*token
, struct statement
*stmt
)
1649 return case_statement(token
->next
, stmt
);
1652 static struct token
*parse_loop_iterator(struct token
*token
, struct statement
*stmt
)
1654 struct symbol
*target
= lookup_symbol(token
->ident
, NS_ITERATOR
);
1655 stmt
->type
= STMT_GOTO
;
1656 stmt
->goto_label
= target
;
1658 sparse_error(stmt
->pos
, "break/continue not in iterator scope");
1659 return expect(token
->next
, ';', "at end of statement");
1662 static struct token
*parse_switch_statement(struct token
*token
, struct statement
*stmt
)
1664 stmt
->type
= STMT_SWITCH
;
1666 token
= parens_expression(token
->next
, &stmt
->switch_expression
, "after 'switch'");
1667 token
= statement(token
, &stmt
->switch_statement
);
1672 static struct token
*parse_goto_statement(struct token
*token
, struct statement
*stmt
)
1674 stmt
->type
= STMT_GOTO
;
1675 token
= token
->next
;
1676 if (match_op(token
, '*')) {
1677 token
= parse_expression(token
->next
, &stmt
->goto_expression
);
1678 add_statement(&function_computed_goto_list
, stmt
);
1679 } else if (token_type(token
) == TOKEN_IDENT
) {
1680 stmt
->goto_label
= label_symbol(token
);
1681 token
= token
->next
;
1683 sparse_error(token
->pos
, "Expected identifier or goto expression");
1685 return expect(token
, ';', "at end of statement");
1688 static struct token
*parse_context_statement(struct token
*token
, struct statement
*stmt
)
1690 stmt
->type
= STMT_CONTEXT
;
1691 token
= parse_expression(token
->next
, &stmt
->expression
);
1692 if(stmt
->expression
->type
== EXPR_PREOP
1693 && stmt
->expression
->op
== '('
1694 && stmt
->expression
->unop
->type
== EXPR_COMMA
) {
1695 struct expression
*expr
;
1696 expr
= stmt
->expression
->unop
;
1697 stmt
->context
= expr
->left
;
1698 stmt
->expression
= expr
->right
;
1700 return expect(token
, ';', "at end of statement");
1703 static struct token
*parse_range_statement(struct token
*token
, struct statement
*stmt
)
1705 stmt
->type
= STMT_RANGE
;
1706 token
= assignment_expression(token
->next
, &stmt
->range_expression
);
1707 token
= expect(token
, ',', "after range expression");
1708 token
= assignment_expression(token
, &stmt
->range_low
);
1709 token
= expect(token
, ',', "after low range");
1710 token
= assignment_expression(token
, &stmt
->range_high
);
1711 return expect(token
, ';', "after range statement");
1714 static struct token
*statement(struct token
*token
, struct statement
**tree
)
1716 struct statement
*stmt
= alloc_statement(token
->pos
, STMT_NONE
);
1719 if (token_type(token
) == TOKEN_IDENT
) {
1720 struct symbol
*s
= lookup_keyword(token
->ident
, NS_KEYWORD
);
1721 if (s
&& s
->op
->statement
)
1722 return s
->op
->statement(token
, stmt
);
1724 if (match_op(token
->next
, ':')) {
1725 stmt
->type
= STMT_LABEL
;
1726 stmt
->label_identifier
= label_symbol(token
);
1727 token
= handle_attributes(token
->next
->next
, &stmt
->label_identifier
->ctype
, KW_ATTRIBUTE
);
1728 return statement(token
, &stmt
->label_statement
);
1732 if (match_op(token
, '{')) {
1733 stmt
->type
= STMT_COMPOUND
;
1734 start_symbol_scope();
1735 token
= compound_statement(token
->next
, stmt
);
1738 return expect(token
, '}', "at end of compound statement");
1741 stmt
->type
= STMT_EXPRESSION
;
1742 return expression_statement(token
, &stmt
->expression
);
1745 static struct token
* statement_list(struct token
*token
, struct statement_list
**list
)
1747 int seen_statement
= 0;
1749 struct statement
* stmt
;
1750 if (eof_token(token
))
1752 if (match_op(token
, '}'))
1754 if (lookup_type(token
)) {
1755 if (seen_statement
) {
1756 warning(token
->pos
, "mixing declarations and code");
1759 stmt
= alloc_statement(token
->pos
, STMT_DECLARATION
);
1760 token
= external_declaration(token
, &stmt
->declaration
);
1762 seen_statement
= warn_on_mixed
;
1763 token
= statement(token
, &stmt
);
1765 add_statement(list
, stmt
);
1770 static struct token
*parameter_type_list(struct token
*token
, struct symbol
*fn
, struct ident
**p
)
1772 struct symbol_list
**list
= &fn
->arguments
;
1774 if (match_op(token
, ')')) {
1775 // No warning for "void oink ();"
1776 // Bug or feature: warns for "void oink () __attribute__ ((noreturn));"
1777 if (p
&& !match_op(token
->next
, ';'))
1778 warning(token
->pos
, "non-ANSI function declaration of function '%s'", show_ident(*p
));
1785 if (match_op(token
, SPECIAL_ELLIPSIS
)) {
1787 warning(token
->pos
, "variadic functions must have one named argument");
1789 token
= token
->next
;
1793 sym
= alloc_symbol(token
->pos
, SYM_NODE
);
1794 token
= parameter_declaration(token
, &sym
);
1795 if (sym
->ctype
.base_type
== &void_ctype
) {
1796 /* Special case: (void) */
1797 if (!*list
&& !sym
->ident
)
1799 warning(token
->pos
, "void parameter");
1801 add_symbol(list
, sym
);
1802 if (!match_op(token
, ','))
1804 token
= token
->next
;
1810 struct token
*compound_statement(struct token
*token
, struct statement
*stmt
)
1812 token
= statement_list(token
, &stmt
->stmts
);
1816 static struct expression
*identifier_expression(struct token
*token
)
1818 struct expression
*expr
= alloc_expression(token
->pos
, EXPR_IDENTIFIER
);
1819 expr
->expr_ident
= token
->ident
;
1823 static struct expression
*index_expression(struct expression
*from
, struct expression
*to
)
1825 int idx_from
, idx_to
;
1826 struct expression
*expr
= alloc_expression(from
->pos
, EXPR_INDEX
);
1828 idx_from
= get_expression_value(from
);
1831 idx_to
= get_expression_value(to
);
1832 if (idx_to
< idx_from
|| idx_from
< 0)
1833 warning(from
->pos
, "nonsense array initializer index range");
1835 expr
->idx_from
= idx_from
;
1836 expr
->idx_to
= idx_to
;
1840 static struct token
*single_initializer(struct expression
**ep
, struct token
*token
)
1842 int expect_equal
= 0;
1843 struct token
*next
= token
->next
;
1844 struct expression
**tail
= ep
;
1849 if ((token_type(token
) == TOKEN_IDENT
) && match_op(next
, ':')) {
1850 struct expression
*expr
= identifier_expression(token
);
1851 if (Wold_initializer
)
1852 warning(token
->pos
, "obsolete struct initializer, use C99 syntax");
1853 token
= initializer(&expr
->ident_expression
, next
->next
);
1854 if (expr
->ident_expression
)
1859 for (tail
= ep
, nested
= 0; ; nested
++, next
= token
->next
) {
1860 if (match_op(token
, '.') && (token_type(next
) == TOKEN_IDENT
)) {
1861 struct expression
*expr
= identifier_expression(next
);
1863 tail
= &expr
->ident_expression
;
1866 } else if (match_op(token
, '[')) {
1867 struct expression
*from
= NULL
, *to
= NULL
, *expr
;
1868 token
= constant_expression(token
->next
, &from
);
1870 sparse_error(token
->pos
, "Expected constant expression");
1873 if (match_op(token
, SPECIAL_ELLIPSIS
))
1874 token
= constant_expression(token
->next
, &to
);
1875 expr
= index_expression(from
, to
);
1877 tail
= &expr
->idx_expression
;
1878 token
= expect(token
, ']', "at end of initializer index");
1885 if (nested
&& !expect_equal
) {
1886 if (!match_op(token
, '='))
1887 warning(token
->pos
, "obsolete array initializer, use C99 syntax");
1892 token
= expect(token
, '=', "at end of initializer index");
1894 token
= initializer(tail
, token
);
1900 static struct token
*initializer_list(struct expression_list
**list
, struct token
*token
)
1902 struct expression
*expr
;
1905 token
= single_initializer(&expr
, token
);
1908 add_expression(list
, expr
);
1909 if (!match_op(token
, ','))
1911 token
= token
->next
;
1916 struct token
*initializer(struct expression
**tree
, struct token
*token
)
1918 if (match_op(token
, '{')) {
1919 struct expression
*expr
= alloc_expression(token
->pos
, EXPR_INITIALIZER
);
1921 token
= initializer_list(&expr
->expr_list
, token
->next
);
1922 return expect(token
, '}', "at end of initializer");
1924 return assignment_expression(token
, tree
);
1927 static void declare_argument(struct symbol
*sym
, struct symbol
*fn
)
1930 sparse_error(sym
->pos
, "no identifier for function argument");
1933 bind_symbol(sym
, sym
->ident
, NS_SYMBOL
);
1936 static struct token
*parse_function_body(struct token
*token
, struct symbol
*decl
,
1937 struct symbol_list
**list
)
1939 struct symbol_list
**old_symbol_list
;
1940 struct symbol
*base_type
= decl
->ctype
.base_type
;
1941 struct statement
*stmt
, **p
;
1944 old_symbol_list
= function_symbol_list
;
1945 if (decl
->ctype
.modifiers
& MOD_INLINE
) {
1946 function_symbol_list
= &decl
->inline_symbol_list
;
1947 p
= &base_type
->inline_stmt
;
1949 function_symbol_list
= &decl
->symbol_list
;
1950 p
= &base_type
->stmt
;
1952 function_computed_target_list
= NULL
;
1953 function_computed_goto_list
= NULL
;
1955 if (decl
->ctype
.modifiers
& MOD_EXTERN
) {
1956 if (!(decl
->ctype
.modifiers
& MOD_INLINE
))
1957 warning(decl
->pos
, "function '%s' with external linkage has definition", show_ident(decl
->ident
));
1959 if (!(decl
->ctype
.modifiers
& MOD_STATIC
))
1960 decl
->ctype
.modifiers
|= MOD_EXTERN
;
1962 stmt
= start_function(decl
);
1965 FOR_EACH_PTR (base_type
->arguments
, arg
) {
1966 declare_argument(arg
, base_type
);
1967 } END_FOR_EACH_PTR(arg
);
1969 token
= compound_statement(token
->next
, stmt
);
1972 if (!(decl
->ctype
.modifiers
& MOD_INLINE
))
1973 add_symbol(list
, decl
);
1974 check_declaration(decl
);
1975 function_symbol_list
= old_symbol_list
;
1976 if (function_computed_goto_list
) {
1977 if (!function_computed_target_list
)
1978 warning(decl
->pos
, "function '%s' has computed goto but no targets?", show_ident(decl
->ident
));
1980 FOR_EACH_PTR(function_computed_goto_list
, stmt
) {
1981 stmt
->target_list
= function_computed_target_list
;
1982 } END_FOR_EACH_PTR(stmt
);
1985 return expect(token
, '}', "at end of function");
1988 static void promote_k_r_types(struct symbol
*arg
)
1990 struct symbol
*base
= arg
->ctype
.base_type
;
1991 if (base
&& base
->ctype
.base_type
== &int_type
&& (base
->ctype
.modifiers
& (MOD_CHAR
| MOD_SHORT
))) {
1992 arg
->ctype
.base_type
= &int_ctype
;
1996 static void apply_k_r_types(struct symbol_list
*argtypes
, struct symbol
*fn
)
1998 struct symbol_list
*real_args
= fn
->ctype
.base_type
->arguments
;
2001 FOR_EACH_PTR(real_args
, arg
) {
2002 struct symbol
*type
;
2004 /* This is quadratic in the number of arguments. We _really_ don't care */
2005 FOR_EACH_PTR(argtypes
, type
) {
2006 if (type
->ident
== arg
->ident
)
2008 } END_FOR_EACH_PTR(type
);
2009 sparse_error(arg
->pos
, "missing type declaration for parameter '%s'", show_ident(arg
->ident
));
2013 /* "char" and "short" promote to "int" */
2014 promote_k_r_types(type
);
2016 arg
->ctype
= type
->ctype
;
2017 } END_FOR_EACH_PTR(arg
);
2019 FOR_EACH_PTR(argtypes
, arg
) {
2021 warning(arg
->pos
, "nonsensical parameter declaration '%s'", show_ident(arg
->ident
));
2022 } END_FOR_EACH_PTR(arg
);
2026 static struct token
*parse_k_r_arguments(struct token
*token
, struct symbol
*decl
,
2027 struct symbol_list
**list
)
2029 struct symbol_list
*args
= NULL
;
2031 warning(token
->pos
, "non-ANSI definition of function '%s'", show_ident(decl
->ident
));
2033 token
= declaration_list(token
, &args
);
2034 if (!match_op(token
, ';')) {
2035 sparse_error(token
->pos
, "expected ';' at end of parameter declaration");
2038 token
= token
->next
;
2039 } while (lookup_type(token
));
2041 apply_k_r_types(args
, decl
);
2043 if (!match_op(token
, '{')) {
2044 sparse_error(token
->pos
, "expected function body");
2047 return parse_function_body(token
, decl
, list
);
2050 static struct token
*toplevel_asm_declaration(struct token
*token
, struct symbol_list
**list
)
2052 struct symbol
*anon
= alloc_symbol(token
->pos
, SYM_NODE
);
2053 struct symbol
*fn
= alloc_symbol(token
->pos
, SYM_FN
);
2054 struct statement
*stmt
;
2056 anon
->ctype
.base_type
= fn
;
2057 stmt
= alloc_statement(token
->pos
, STMT_NONE
);
2060 token
= parse_asm_statement(token
, stmt
);
2062 add_symbol(list
, anon
);
2066 struct token
*external_declaration(struct token
*token
, struct symbol_list
**list
)
2068 struct ident
*ident
= NULL
;
2069 struct symbol
*decl
;
2070 struct ctype ctype
= { 0, };
2071 struct symbol
*base_type
;
2074 /* Top-level inline asm? */
2075 if (token_type(token
) == TOKEN_IDENT
) {
2076 struct symbol
*s
= lookup_keyword(token
->ident
, NS_KEYWORD
);
2077 if (s
&& s
->op
->toplevel
)
2078 return s
->op
->toplevel(token
, list
);
2081 /* Parse declaration-specifiers, if any */
2082 token
= declaration_specifiers(token
, &ctype
, 0);
2083 decl
= alloc_symbol(token
->pos
, SYM_NODE
);
2084 decl
->ctype
= ctype
;
2085 token
= declarator(token
, decl
, &ident
);
2086 apply_modifiers(token
->pos
, &decl
->ctype
);
2088 /* Just a type declaration? */
2090 return expect(token
, ';', "end of type declaration");
2092 /* type define declaration? */
2093 is_typedef
= (ctype
.modifiers
& MOD_TYPEDEF
) != 0;
2095 /* Typedefs don't have meaningful storage */
2097 ctype
.modifiers
&= ~MOD_STORAGE
;
2098 decl
->ctype
.modifiers
&= ~MOD_STORAGE
;
2099 decl
->ctype
.modifiers
|= MOD_USERTYPE
;
2102 bind_symbol(decl
, ident
, is_typedef
? NS_TYPEDEF
: NS_SYMBOL
);
2104 base_type
= decl
->ctype
.base_type
;
2107 if (base_type
&& !base_type
->ident
)
2108 base_type
->ident
= ident
;
2109 } else if (base_type
&& base_type
->type
== SYM_FN
) {
2110 /* K&R argument declaration? */
2111 if (lookup_type(token
))
2112 return parse_k_r_arguments(token
, decl
, list
);
2113 if (match_op(token
, '{'))
2114 return parse_function_body(token
, decl
, list
);
2116 if (!(decl
->ctype
.modifiers
& MOD_STATIC
))
2117 decl
->ctype
.modifiers
|= MOD_EXTERN
;
2118 } else if (base_type
== &void_ctype
&& !(decl
->ctype
.modifiers
& MOD_EXTERN
)) {
2119 sparse_error(token
->pos
, "void declaration");
2123 if (!is_typedef
&& match_op(token
, '=')) {
2124 if (decl
->ctype
.modifiers
& MOD_EXTERN
) {
2125 warning(decl
->pos
, "symbol with external linkage has initializer");
2126 decl
->ctype
.modifiers
&= ~MOD_EXTERN
;
2128 token
= initializer(&decl
->initializer
, token
->next
);
2131 if (!(decl
->ctype
.modifiers
& (MOD_EXTERN
| MOD_INLINE
))) {
2132 add_symbol(list
, decl
);
2133 fn_local_symbol(decl
);
2136 check_declaration(decl
);
2138 if (!match_op(token
, ','))
2141 token
= token
->next
;
2143 decl
= alloc_symbol(token
->pos
, SYM_NODE
);
2144 decl
->ctype
= ctype
;
2145 token
= declaration_specifiers(token
, &decl
->ctype
, 1);
2146 token
= declarator(token
, decl
, &ident
);
2147 apply_modifiers(token
->pos
, &decl
->ctype
);
2149 sparse_error(token
->pos
, "expected identifier name in type definition");
2153 bind_symbol(decl
, ident
, is_typedef
? NS_TYPEDEF
: NS_SYMBOL
);
2155 /* Function declarations are automatically extern unless specifically static */
2156 base_type
= decl
->ctype
.base_type
;
2157 if (!is_typedef
&& base_type
&& base_type
->type
== SYM_FN
) {
2158 if (!(decl
->ctype
.modifiers
& MOD_STATIC
))
2159 decl
->ctype
.modifiers
|= MOD_EXTERN
;
2162 return expect(token
, ';', "at end of declaration");