1 /* Definitions for c-common.c.
2 Copyright (C) 1987, 1993, 1994, 1995, 1997, 1998,
3 1999, 2000 Free Software Foundation, Inc.
5 This file is part of GNU CC.
7 GNU CC is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GNU CC is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU CC; see the file COPYING. If not, write to
19 the Free Software Foundation, 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
22 #ifndef GCC_C_COMMON_H
23 #define GCC_C_COMMON_H
25 #include "splay-tree.h"
27 /* Usage of TREE_LANG_FLAG_?:
28 0: COMPOUND_STMT_NO_SCOPE (in COMPOUND_STMT).
29 TREE_NEGATED_INT (in INTEGER_CST).
30 IDENTIFIER_MARKED (used by search routines).
31 SCOPE_BEGIN_P (in SCOPE_STMT)
32 DECL_PRETTY_FUNCTION_P (in VAR_DECL)
33 NEW_FOR_SCOPE_P (in FOR_STMT)
34 1: C_DECLARED_LABEL_FLAG (in LABEL_DECL)
35 STMT_IS_FULL_EXPR_P (in _STMT)
36 2: STMT_LINENO_FOR_FN_P (in _STMT)
37 3: SCOPE_NO_CLEANUPS_P (in SCOPE_STMT)
38 4: SCOPE_PARTIAL_P (in SCOPE_STMT)
41 /* Reserved identifiers. This is the union of all the keywords for C,
42 C++, and Objective C. All the type modifiers have to be in one
43 block at the beginning, because they are used as mask bits. There
44 are 27 type modifiers; if we add many more we will have to redesign
45 the mask mechanism. */
50 /* C, in empirical order of frequency. */
52 RID_UNSIGNED
, RID_LONG
, RID_CONST
, RID_EXTERN
,
53 RID_REGISTER
, RID_TYPEDEF
, RID_SHORT
, RID_INLINE
,
54 RID_VOLATILE
, RID_SIGNED
, RID_AUTO
, RID_RESTRICT
,
57 RID_BOUNDED
, RID_UNBOUNDED
, RID_COMPLEX
,
60 RID_FRIEND
, RID_VIRTUAL
, RID_EXPLICIT
, RID_EXPORT
, RID_MUTABLE
,
63 RID_IN
, RID_OUT
, RID_INOUT
, RID_BYCOPY
, RID_BYREF
, RID_ONEWAY
,
66 RID_INT
, RID_CHAR
, RID_FLOAT
, RID_DOUBLE
, RID_VOID
,
67 RID_ENUM
, RID_STRUCT
, RID_UNION
, RID_IF
, RID_ELSE
,
68 RID_WHILE
, RID_DO
, RID_FOR
, RID_SWITCH
, RID_CASE
,
69 RID_DEFAULT
, RID_BREAK
, RID_CONTINUE
, RID_RETURN
, RID_GOTO
,
73 RID_ASM
, RID_TYPEOF
, RID_ALIGNOF
, RID_ATTRIBUTE
, RID_VA_ARG
,
74 RID_EXTENSION
, RID_IMAGPART
, RID_REALPART
, RID_LABEL
, RID_PTRBASE
,
75 RID_PTREXTENT
, RID_PTRVALUE
,
78 RID_BOOL
, RID_WCHAR
, RID_CLASS
,
79 RID_PUBLIC
, RID_PRIVATE
, RID_PROTECTED
,
80 RID_TEMPLATE
, RID_NULL
, RID_CATCH
,
81 RID_DELETE
, RID_FALSE
, RID_NAMESPACE
,
82 RID_NEW
, RID_OPERATOR
, RID_THIS
,
83 RID_THROW
, RID_TRUE
, RID_TRY
,
84 RID_TYPENAME
, RID_TYPEID
, RID_USING
,
87 RID_CONSTCAST
, RID_DYNCAST
, RID_REINTCAST
, RID_STATCAST
,
89 /* alternate spellings */
90 RID_AND
, RID_AND_EQ
, RID_NOT
, RID_NOT_EQ
,
91 RID_OR
, RID_OR_EQ
, RID_XOR
, RID_XOR_EQ
,
92 RID_BITAND
, RID_BITOR
, RID_COMPL
,
95 RID_ID
, RID_AT_ENCODE
, RID_AT_END
,
96 RID_AT_CLASS
, RID_AT_ALIAS
, RID_AT_DEFS
,
97 RID_AT_PRIVATE
, RID_AT_PROTECTED
, RID_AT_PUBLIC
,
98 RID_AT_PROTOCOL
, RID_AT_SELECTOR
, RID_AT_INTERFACE
,
99 RID_AT_IMPLEMENTATION
,
103 RID_FIRST_MODIFIER
= RID_STATIC
,
104 RID_LAST_MODIFIER
= RID_ONEWAY
107 /* The elements of `ridpointers' are identifier nodes for the reserved
108 type names and storage classes. It is indexed by a RID_... value. */
109 extern tree
*ridpointers
;
111 /* Standard named or nameless data types of the C compiler. */
116 CTI_SIGNED_WCHAR_TYPE
,
117 CTI_UNSIGNED_WCHAR_TYPE
,
119 CTI_C_SIZE_TYPE
, /* For format checking only. */
120 CTI_SIGNED_SIZE_TYPE
, /* For format checking only. */
121 CTI_UNSIGNED_PTRDIFF_TYPE
, /* For format checking only. */
124 CTI_WIDEST_INT_LIT_TYPE
,
125 CTI_WIDEST_UINT_LIT_TYPE
,
128 CTI_WCHAR_ARRAY_TYPE
,
131 CTI_CONST_STRING_TYPE
,
136 CTI_DEFAULT_FUNCTION_TYPE
,
142 CTI_PTR_FTYPE_SIZETYPE
,
144 CTI_G77_INTEGER_TYPE
,
145 CTI_G77_UINTEGER_TYPE
,
146 CTI_G77_LONGINT_TYPE
,
147 CTI_G77_ULONGINT_TYPE
,
149 /* These are not types, but we have to look them up all the time. */
151 CTI_PRETTY_FUNCTION_ID
,
159 #define wchar_type_node c_global_trees[CTI_WCHAR_TYPE]
160 #define signed_wchar_type_node c_global_trees[CTI_SIGNED_WCHAR_TYPE]
161 #define unsigned_wchar_type_node c_global_trees[CTI_UNSIGNED_WCHAR_TYPE]
162 #define wint_type_node c_global_trees[CTI_WINT_TYPE]
163 #define c_size_type_node c_global_trees[CTI_C_SIZE_TYPE]
164 #define signed_size_type_node c_global_trees[CTI_SIGNED_SIZE_TYPE]
165 #define unsigned_ptrdiff_type_node c_global_trees[CTI_UNSIGNED_PTRDIFF_TYPE]
166 #define intmax_type_node c_global_trees[CTI_INTMAX_TYPE]
167 #define uintmax_type_node c_global_trees[CTI_UINTMAX_TYPE]
168 #define widest_integer_literal_type_node c_global_trees[CTI_WIDEST_INT_LIT_TYPE]
169 #define widest_unsigned_literal_type_node c_global_trees[CTI_WIDEST_UINT_LIT_TYPE]
171 #define boolean_type_node c_global_trees[CTI_BOOLEAN_TYPE]
172 #define boolean_true_node c_global_trees[CTI_BOOLEAN_TRUE]
173 #define boolean_false_node c_global_trees[CTI_BOOLEAN_FALSE]
175 #define char_array_type_node c_global_trees[CTI_CHAR_ARRAY_TYPE]
176 #define wchar_array_type_node c_global_trees[CTI_WCHAR_ARRAY_TYPE]
177 #define int_array_type_node c_global_trees[CTI_INT_ARRAY_TYPE]
178 #define string_type_node c_global_trees[CTI_STRING_TYPE]
179 #define const_string_type_node c_global_trees[CTI_CONST_STRING_TYPE]
181 #define default_function_type c_global_trees[CTI_DEFAULT_FUNCTION_TYPE]
182 #define void_list_node c_global_trees[CTI_VOID_LIST]
183 #define void_ftype c_global_trees[CTI_VOID_FTYPE]
184 #define void_ftype_ptr c_global_trees[CTI_VOID_FTYPE_PTR]
185 #define int_ftype_int c_global_trees[CTI_INT_FTYPE_INT]
186 #define ptr_ftype_sizetype c_global_trees[CTI_PTR_FTYPE_SIZETYPE]
188 /* g77 integer types, which which must be kept in sync with f/com.h */
189 #define g77_integer_type_node c_global_trees[CTI_G77_INTEGER_TYPE]
190 #define g77_uinteger_type_node c_global_trees[CTI_G77_UINTEGER_TYPE]
191 #define g77_longint_type_node c_global_trees[CTI_G77_LONGINT_TYPE]
192 #define g77_ulongint_type_node c_global_trees[CTI_G77_ULONGINT_TYPE]
194 #define function_id_node c_global_trees[CTI_FUNCTION_ID]
195 #define pretty_function_id_node c_global_trees[CTI_PRETTY_FUNCTION_ID]
196 #define func_id_node c_global_trees[CTI_FUNC_ID]
198 /* A node for `((void) 0)'. */
199 #define void_zero_node c_global_trees[CTI_VOID_ZERO]
201 extern tree c_global_trees
[CTI_MAX
];
203 /* Mark which labels are explicitly declared.
204 These may be shadowed, and may be referenced from nested functions. */
205 #define C_DECLARED_LABEL_FLAG(label) TREE_LANG_FLAG_1 (label)
207 typedef enum c_language_kind
209 clk_c
, /* A dialect of C: K&R C, ANSI/ISO C89, C2000,
211 clk_cplusplus
, /* ANSI/ISO C++ */
212 clk_objective_c
/* Objective C */
216 /* Information about a statement tree. */
219 /* The last statement added to the tree. */
221 /* The type of the last expression statement. (This information is
222 needed to implement the statement-expression extension.) */
223 tree x_last_expr_type
;
224 /* In C++, Non-zero if we should treat statements as full
225 expressions. In particular, this variable is no-zero if at the
226 end of a statement we should destroy any temporaries created
227 during that statement. Similarly, if, at the end of a block, we
228 should destroy any local variables in this block. Normally, this
229 variable is non-zero, since those are the normal semantics of
232 However, in order to represent aggregate initialization code as
233 tree structure, we use statement-expressions. The statements
234 within the statement expression should not result in cleanups
235 being run until the entire enclosing statement is complete.
237 This flag has no effect in C. */
238 int stmts_are_full_exprs_p
;
241 typedef struct stmt_tree_s
*stmt_tree
;
243 /* Global state pertinent to the current function. Some C dialects
244 extend this structure with additional fields. */
246 struct language_function
{
247 /* While we are parsing the function, this contains information
248 about the statement-tree that we are building. */
249 struct stmt_tree_s x_stmt_tree
;
250 /* The stack of SCOPE_STMTs for the current function. */
251 tree x_scope_stmt_stack
;
252 /* Nonzero if __FUNCTION__ and its ilk have been declared in this
254 int x_function_name_declared_p
;
257 /* When building a statement-tree, this is the last statement added to
260 #define last_tree (current_stmt_tree ()->x_last_stmt)
262 /* The type of the last expression-statement we have seen. */
264 #define last_expr_type (current_stmt_tree ()->x_last_expr_type)
266 /* LAST_TREE contains the last statement parsed. These are chained
267 together through the TREE_CHAIN field, but often need to be
268 re-organized since the parse is performed bottom-up. This macro
269 makes LAST_TREE the indicated SUBSTMT of STMT. */
271 #define RECHAIN_STMTS(stmt, substmt) \
273 substmt = TREE_CHAIN (stmt); \
274 TREE_CHAIN (stmt) = NULL_TREE; \
278 /* Language-specific hooks. */
280 extern int (*lang_statement_code_p
) PARAMS ((enum tree_code
));
281 extern void (*lang_expand_stmt
) PARAMS ((tree
));
282 extern void (*lang_expand_decl_stmt
) PARAMS ((tree
));
283 extern void (*lang_expand_function_end
) PARAMS ((void));
285 /* The type of a function that walks over tree structure. */
287 typedef tree (*walk_tree_fn
) PARAMS ((tree
*,
291 extern stmt_tree current_stmt_tree
PARAMS ((void));
292 extern tree
*current_scope_stmt_stack
PARAMS ((void));
293 extern void begin_stmt_tree
PARAMS ((tree
*));
294 extern tree add_stmt
PARAMS ((tree
));
295 extern void add_decl_stmt
PARAMS ((tree
));
296 extern tree add_scope_stmt
PARAMS ((int, int));
297 extern void finish_stmt_tree
PARAMS ((tree
*));
299 extern int statement_code_p
PARAMS ((enum tree_code
));
300 extern tree walk_stmt_tree
PARAMS ((tree
*,
303 extern void prep_stmt
PARAMS ((tree
));
304 extern void expand_stmt
PARAMS ((tree
));
305 extern void mark_stmt_tree
PARAMS ((void *));
307 /* Extra information associated with a DECL. Other C dialects extend
308 this structure in various ways. The C front-end only uses this
309 structure for FUNCTION_DECLs; all other DECLs have a NULL
310 DECL_LANG_SPECIFIC field. */
313 /* In a FUNCTION_DECL, this is DECL_SAVED_TREE. */
317 /* In a FUNCTION_DECL, the saved representation of the body of the
318 entire function. Usually a COMPOUND_STMT, but in C++ this may also
319 be a RETURN_INIT, CTOR_INITIALIZER, or TRY_BLOCK. */
320 #define DECL_SAVED_TREE(NODE) \
321 (((struct c_lang_decl *) DECL_LANG_SPECIFIC (FUNCTION_DECL_CHECK (NODE))) \
324 extern void c_mark_lang_decl
PARAMS ((struct c_lang_decl
*));
326 /* The variant of the C language being processed. Each C language
327 front-end defines this variable. */
329 extern c_language_kind c_language
;
331 /* Nonzero means give string constants the type `const char *', rather
334 extern int flag_const_strings
;
336 /* Warn about *printf or *scanf format/argument anomalies. */
338 extern int warn_format
;
340 /* Warn about possible violations of sequence point rules. */
342 extern int warn_sequence_point
;
344 /* Warn about functions which might be candidates for format attributes. */
346 extern int warn_missing_format_attribute
;
348 /* Nonzero means do some things the same way PCC does. */
350 extern int flag_traditional
;
352 /* Nonzero means enable C89 Amendment 1 features, other than digraphs. */
354 extern int flag_isoc94
;
356 /* Nonzero means use the ISO C99 dialect of C. */
358 extern int flag_isoc99
;
360 /* Nonzero means accept digraphs. */
362 extern int flag_digraphs
;
364 /* Nonzero means environment is hosted (i.e., not freestanding) */
366 extern int flag_hosted
;
368 /* Nonzero means add default format_arg attributes for functions not
371 extern int flag_noniso_default_format_attributes
;
373 /* Nonzero means don't recognize any builtin functions. */
375 extern int flag_no_builtin
;
377 /* Nonzero means don't recognize the non-ANSI builtin functions.
380 extern int flag_no_nonansi_builtin
;
382 /* If non-NULL, dump the tree structure for the entire translation
383 unit to this file. */
385 extern const char *flag_dump_translation_unit
;
387 /* Nonzero means warn about suggesting putting in ()'s. */
389 extern int warn_parentheses
;
391 /* Warn if a type conversion is done that might have confusing results. */
393 extern int warn_conversion
;
395 /* C types are partitioned into three subsets: object, function, and
397 #define C_TYPE_OBJECT_P(type) \
398 (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type))
400 #define C_TYPE_INCOMPLETE_P(type) \
401 (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type) == 0)
403 #define C_TYPE_FUNCTION_P(type) \
404 (TREE_CODE (type) == FUNCTION_TYPE)
406 /* Return the qualifiers that apply to this type. In C++, that means
407 descending through array types. Note that this macro evaluates its
408 arguments mor than once. */
409 #define C_TYPE_QUALS(TYPE) \
410 (TYPE_QUALS ((TREE_CODE (TYPE) == ARRAY_TYPE \
411 && c_language == clk_cplusplus) \
412 ? strip_array_types (TYPE) : TYPE))
414 /* For convenience we define a single macro to identify the class of
415 object or incomplete types. */
416 #define C_TYPE_OBJECT_OR_INCOMPLETE_P(type) \
417 (!C_TYPE_FUNCTION_P (type))
419 /* Record in each node resulting from a binary operator
420 what operator was specified for it. */
421 #define C_EXP_ORIGINAL_CODE(exp) ((enum tree_code) TREE_COMPLEXITY (exp))
423 /* Pointer to function to generate the VAR_DECL for __FUNCTION__ etc.
424 ID is the identifier to use, NAME is the string.
425 TYPE_DEP indicates whether it depends on type of the function or not
426 (i.e. __PRETTY_FUNCTION__). */
428 extern tree (*make_fname_decl
) PARAMS ((tree
, const char *, int));
430 extern void declare_function_name
PARAMS ((void));
431 extern void decl_attributes
PARAMS ((tree
, tree
, tree
));
432 extern void init_function_format_info
PARAMS ((void));
433 extern void check_function_format
PARAMS ((int *, tree
, tree
, tree
));
434 extern void c_apply_type_quals_to_decl
PARAMS ((int, tree
));
435 /* Print an error message for invalid operands to arith operation CODE.
436 NOP_EXPR is used as a special case (see truthvalue_conversion). */
437 extern void binary_op_error
PARAMS ((enum tree_code
));
438 extern void c_expand_expr_stmt
PARAMS ((tree
));
439 extern void c_expand_start_cond
PARAMS ((tree
, int));
440 extern void c_finish_then
PARAMS ((void));
441 extern void c_expand_start_else
PARAMS ((void));
442 extern void c_finish_else
PARAMS ((void));
443 extern void c_expand_end_cond
PARAMS ((void));
444 /* Validate the expression after `case' and apply default promotions. */
445 extern tree check_case_value
PARAMS ((tree
));
446 /* Concatenate a list of STRING_CST nodes into one STRING_CST. */
447 extern tree combine_strings
PARAMS ((tree
));
448 extern void constant_expression_warning
PARAMS ((tree
));
449 extern tree convert_and_check
PARAMS ((tree
, tree
));
450 extern void overflow_warning
PARAMS ((tree
));
451 extern void unsigned_conversion_warning
PARAMS ((tree
, tree
));
453 /* Read the rest of the current #-directive line. */
455 extern char *get_directive_line
PARAMS ((void));
456 #define GET_DIRECTIVE_LINE() get_directive_line ()
458 extern char *get_directive_line
PARAMS ((FILE *));
459 #define GET_DIRECTIVE_LINE() get_directive_line (finput)
462 /* Subroutine of build_binary_op, used for comparison operations.
463 See if the operands have both been converted from subword integer types
464 and, if so, perhaps change them both back to their original type. */
465 extern tree shorten_compare
PARAMS ((tree
*, tree
*, tree
*, enum tree_code
*));
466 /* Prepare expr to be an argument of a TRUTH_NOT_EXPR,
467 or validate its data type for an `if' or `while' statement or ?..: exp. */
468 extern tree truthvalue_conversion
PARAMS ((tree
));
469 extern tree type_for_mode
PARAMS ((enum machine_mode
, int));
470 extern tree type_for_size
PARAMS ((unsigned, int));
472 extern unsigned int min_precision
PARAMS ((tree
, int));
474 /* Add qualifiers to a type, in the fashion for C. */
475 extern tree c_build_qualified_type
PARAMS ((tree
, int));
477 /* Build tree nodes and builtin functions common to both C and C++ language
479 extern void c_common_nodes_and_builtins
PARAMS ((void));
481 extern tree build_va_arg
PARAMS ((tree
, tree
));
483 /* Nonzero if the type T promotes to itself.
484 ANSI C states explicitly the list of types that promote;
485 in particular, short promotes to int even if they have the same width. */
486 #define C_PROMOTING_INTEGER_TYPE_P(t) \
487 (TREE_CODE ((t)) == INTEGER_TYPE \
488 && (TYPE_MAIN_VARIANT (t) == char_type_node \
489 || TYPE_MAIN_VARIANT (t) == signed_char_type_node \
490 || TYPE_MAIN_VARIANT (t) == unsigned_char_type_node \
491 || TYPE_MAIN_VARIANT (t) == short_integer_type_node \
492 || TYPE_MAIN_VARIANT (t) == short_unsigned_type_node))
494 extern int self_promoting_args_p
PARAMS ((tree
));
495 extern tree simple_type_promotes_to
PARAMS ((tree
));
496 extern tree strip_array_types
PARAMS ((tree
));
498 /* These macros provide convenient access to the various _STMT nodes. */
500 /* Nonzero if this statement should be considered a full-expression,
501 i.e., if temporaries created during this statement should have
502 their destructors run at the end of this statement. (In C, this
503 will always be false, since there are no destructors.) */
504 #define STMT_IS_FULL_EXPR_P(NODE) TREE_LANG_FLAG_1 ((NODE))
506 /* IF_STMT accessors. These give access to the condtion of the if
507 statement, the then block of the if statement, and the else block
508 of the if stsatement if it exists. */
509 #define IF_COND(NODE) TREE_OPERAND (IF_STMT_CHECK (NODE), 0)
510 #define THEN_CLAUSE(NODE) TREE_OPERAND (IF_STMT_CHECK (NODE), 1)
511 #define ELSE_CLAUSE(NODE) TREE_OPERAND (IF_STMT_CHECK (NODE), 2)
513 /* WHILE_STMT accessors. These give access to the condtion of the
514 while statement and the body of the while statement, respectively. */
515 #define WHILE_COND(NODE) TREE_OPERAND (WHILE_STMT_CHECK (NODE), 0)
516 #define WHILE_BODY(NODE) TREE_OPERAND (WHILE_STMT_CHECK (NODE), 1)
518 /* DO_STMT accessors. These give access to the condition of the do
519 statement and the body of the do statement, respectively. */
520 #define DO_COND(NODE) TREE_OPERAND (DO_STMT_CHECK (NODE), 0)
521 #define DO_BODY(NODE) TREE_OPERAND (DO_STMT_CHECK (NODE), 1)
523 /* RETURN_STMT accessor. This gives the expression associated with a
525 #define RETURN_EXPR(NODE) TREE_OPERAND (RETURN_STMT_CHECK (NODE), 0)
527 /* EXPR_STMT accessor. This gives the expression associated with an
528 expression statement. */
529 #define EXPR_STMT_EXPR(NODE) TREE_OPERAND (EXPR_STMT_CHECK (NODE), 0)
531 /* FOR_STMT accessors. These give access to the init statement,
532 condition, update expression, and body of the for statement,
534 #define FOR_INIT_STMT(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 0)
535 #define FOR_COND(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 1)
536 #define FOR_EXPR(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 2)
537 #define FOR_BODY(NODE) TREE_OPERAND (FOR_STMT_CHECK (NODE), 3)
539 /* SWITCH_STMT accessors. These give access to the condition and body
540 of the switch statement, respectively. */
541 #define SWITCH_COND(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 0)
542 #define SWITCH_BODY(NODE) TREE_OPERAND (SWITCH_STMT_CHECK (NODE), 1)
544 /* CASE_LABEL accessors. These give access to the high and low values
545 of a case label, respectively. */
546 #define CASE_LOW(NODE) TREE_OPERAND (CASE_LABEL_CHECK (NODE), 0)
547 #define CASE_HIGH(NODE) TREE_OPERAND (CASE_LABEL_CHECK (NODE), 1)
548 #define CASE_LABEL_DECL(NODE) TREE_OPERAND (CASE_LABEL_CHECK (NODE), 2)
550 /* GOTO_STMT accessor. This gives access to the label associated with
552 #define GOTO_DESTINATION(NODE) TREE_OPERAND (GOTO_STMT_CHECK (NODE), 0)
554 /* COMPOUND_STMT accessor. This gives access to the TREE_LIST of
555 statements assocated with a compound statement. The result is the
556 first statement in the list. Succeeding nodes can be acccessed by
557 calling TREE_CHAIN on a node in the list. */
558 #define COMPOUND_BODY(NODE) TREE_OPERAND (COMPOUND_STMT_CHECK (NODE), 0)
560 /* ASM_STMT accessors. ASM_STRING returns a STRING_CST for the
561 instruction (e.g., "mov x, y"). ASM_OUTPUTS, ASM_INPUTS, and
562 ASM_CLOBBERS represent the outputs, inputs, and clobbers for the
564 #define ASM_CV_QUAL(NODE) TREE_OPERAND (ASM_STMT_CHECK (NODE), 0)
565 #define ASM_STRING(NODE) TREE_OPERAND (ASM_STMT_CHECK (NODE), 1)
566 #define ASM_OUTPUTS(NODE) TREE_OPERAND (ASM_STMT_CHECK (NODE), 2)
567 #define ASM_INPUTS(NODE) TREE_OPERAND (ASM_STMT_CHECK (NODE), 3)
568 #define ASM_CLOBBERS(NODE) TREE_OPERAND (ASM_STMT_CHECK (NODE), 4)
570 /* DECL_STMT accessor. This gives access to the DECL associated with
571 the given declaration statement. */
572 #define DECL_STMT_DECL(NODE) TREE_OPERAND (DECL_STMT_CHECK (NODE), 0)
574 /* STMT_EXPR accessor. */
575 #define STMT_EXPR_STMT(NODE) TREE_OPERAND (STMT_EXPR_CHECK (NODE), 0)
577 /* LABEL_STMT accessor. This gives access to the label associated with
578 the given label statement. */
579 #define LABEL_STMT_LABEL(NODE) TREE_OPERAND (LABEL_STMT_CHECK (NODE), 0)
581 /* Nonzero if this SCOPE_STMT is for the beginning of a scope. */
582 #define SCOPE_BEGIN_P(NODE) \
583 (TREE_LANG_FLAG_0 (SCOPE_STMT_CHECK (NODE)))
585 /* Nonzero if this SCOPE_STMT is for the end of a scope. */
586 #define SCOPE_END_P(NODE) \
587 (!SCOPE_BEGIN_P (SCOPE_STMT_CHECK (NODE)))
589 /* The BLOCK containing the declarations contained in this scope. */
590 #define SCOPE_STMT_BLOCK(NODE) \
591 (TREE_OPERAND (SCOPE_STMT_CHECK (NODE), 0))
593 /* Nonzero for a SCOPE_STMT if there were no variables in this scope. */
594 #define SCOPE_NULLIFIED_P(NODE) \
595 (SCOPE_STMT_BLOCK ((NODE)) == NULL_TREE)
597 /* Nonzero for a SCOPE_STMT which represents a lexical scope, but
598 which should be treated as non-existant from the point of view of
599 running cleanup actions. */
600 #define SCOPE_NO_CLEANUPS_P(NODE) \
601 (TREE_LANG_FLAG_3 (SCOPE_STMT_CHECK (NODE)))
603 /* Nonzero for a SCOPE_STMT if this statement is for a partial scope.
611 there is (implicitly) a new scope after `l', even though there are
612 no curly braces. In particular, when we hit the goto, we must
613 destroy s2 and then re-construct it. For the implicit scope,
614 SCOPE_PARTIAL_P will be set. */
615 #define SCOPE_PARTIAL_P(NODE) \
616 (TREE_LANG_FLAG_4 (SCOPE_STMT_CHECK (NODE)))
618 /* Nonzero for an ASM_STMT if the assembly statement is volatile. */
619 #define ASM_VOLATILE_P(NODE) \
620 (ASM_CV_QUAL (ASM_STMT_CHECK (NODE)) != NULL_TREE)
622 /* The line-number at which a statement began. But if
623 STMT_LINENO_FOR_FN_P does holds, then this macro gives the
624 line number for the end of the current function instead. */
625 #define STMT_LINENO(NODE) \
626 (TREE_COMPLEXITY ((NODE)))
628 /* If non-zero, the STMT_LINENO for NODE is the line at which the
630 #define STMT_LINENO_FOR_FN_P(NODE) \
631 (TREE_LANG_FLAG_2 ((NODE)))
633 /* Nonzero if we want the new ISO rules for pushing a new scope for `for'
634 initialization variables. */
635 #define NEW_FOR_SCOPE_P(NODE) (TREE_LANG_FLAG_0 (NODE))
637 #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) SYM,
640 C_DUMMY_TREE_CODE
= LAST_AND_UNUSED_TREE_CODE
,
641 #include "c-common.def"
647 extern void add_c_tree_codes
PARAMS ((void));
648 extern void genrtl_do_pushlevel
PARAMS ((void));
649 extern void genrtl_goto_stmt
PARAMS ((tree
));
650 extern void genrtl_expr_stmt
PARAMS ((tree
));
651 extern void genrtl_decl_stmt
PARAMS ((tree
));
652 extern void genrtl_if_stmt
PARAMS ((tree
));
653 extern void genrtl_while_stmt
PARAMS ((tree
));
654 extern void genrtl_do_stmt
PARAMS ((tree
));
655 extern void genrtl_return_stmt
PARAMS ((tree
));
656 extern void genrtl_for_stmt
PARAMS ((tree
));
657 extern void genrtl_break_stmt
PARAMS ((void));
658 extern void genrtl_continue_stmt
PARAMS ((void));
659 extern void genrtl_scope_stmt
PARAMS ((tree
));
660 extern void genrtl_switch_stmt
PARAMS ((tree
));
661 extern void genrtl_case_label
PARAMS ((tree
));
662 extern void genrtl_compound_stmt
PARAMS ((tree
));
663 extern void genrtl_asm_stmt
PARAMS ((tree
, tree
,
666 extern void genrtl_decl_cleanup
PARAMS ((tree
, tree
));
667 extern int stmts_are_full_exprs_p
PARAMS ((void));
668 extern int anon_aggr_type_p
PARAMS ((tree
));
670 /* For a VAR_DECL that is an anonymous union, these are the various
671 sub-variables that make up the anonymous union. */
672 #define DECL_ANON_UNION_ELEMS(NODE) DECL_ARGUMENTS ((NODE))
674 /* In a FIELD_DECL, nonzero if the decl was originally a bitfield. */
675 #define DECL_C_BIT_FIELD(NODE) \
676 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) == 1)
677 #define SET_DECL_C_BIT_FIELD(NODE) \
678 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 1)
679 #define CLEAR_DECL_C_BIT_FIELD(NODE) \
680 (DECL_LANG_FLAG_4 (FIELD_DECL_CHECK (NODE)) = 0)
682 extern void emit_local_var
PARAMS ((tree
));
683 extern void make_rtl_for_local_static
PARAMS ((tree
));
684 extern tree expand_cond
PARAMS ((tree
));
685 extern void c_expand_return
PARAMS ((tree
));
686 extern void do_case
PARAMS ((tree
, tree
));
687 extern tree build_stmt
PARAMS ((enum tree_code
, ...));
688 extern tree build_case_label
PARAMS ((tree
, tree
, tree
));
689 extern tree build_continue_stmt
PARAMS ((void));
690 extern tree build_break_stmt
PARAMS ((void));
691 extern tree build_return_stmt
PARAMS ((tree
));
693 #define COMPOUND_STMT_NO_SCOPE(NODE) TREE_LANG_FLAG_0 (NODE)
695 extern void c_expand_asm_operands
PARAMS ((tree
, tree
, tree
, tree
, int, const char *, int));
697 /* These functions must be defined by each front-end which implements
698 a variant of the C language. They are used in c-common.c. */
700 extern tree build_unary_op
PARAMS ((enum tree_code
,
702 extern tree build_binary_op
PARAMS ((enum tree_code
,
704 extern int lvalue_p
PARAMS ((tree
));
705 extern tree default_conversion
PARAMS ((tree
));
707 /* Given two integer or real types, return the type for their sum.
708 Given two compatible ANSI C types, returns the merged type. */
710 extern tree common_type
PARAMS ((tree
, tree
));
712 extern tree expand_tree_builtin
PARAMS ((tree
, tree
, tree
));
714 extern tree decl_constant_value
PARAMS ((tree
));
716 /* Hook currently used only by the C++ front end to reset internal state
717 after entering or leaving a header file. */
718 extern void extract_interface_info
PARAMS ((void));
720 extern void mark_c_language_function
PARAMS ((struct language_function
*));
722 extern int case_compare
PARAMS ((splay_tree_key
,
725 extern tree c_add_case_label
PARAMS ((splay_tree
,
729 extern tree build_function_call
PARAMS ((tree
, tree
));
731 /* If this variable is defined to a non-NULL value, it will be called
732 after the file has been completely parsed. The argument will be
733 the GLOBAL_NAMESPACE in C++, or the list of top-level declarations
735 extern void (*back_end_hook
) PARAMS ((tree
));
739 extern struct rtx_def
*c_expand_expr
PARAMS ((tree
, rtx
,
741 enum expand_modifier
));
743 extern int c_safe_from_p
PARAMS ((rtx
, tree
));
749 typedef struct dump_info
*dump_info_p
;
751 /* A callback function used dump language-specific parts of tree
752 nodes. Returns non-zero if it does not want the usual dumping of
753 the second argument. */
755 typedef int (*dump_tree_fn
) PARAMS ((dump_info_p
, tree
));
757 extern dump_tree_fn lang_dump_tree
;
759 extern void dump_node_to_file
PARAMS ((tree
, const char *));
761 /* Information recorded about each file examined during compilation. */
765 int time
; /* Time spent in the file. */
766 short interface_only
; /* Flags - used only by C++ */
767 short interface_unknown
;
770 struct c_fileinfo
*get_fileinfo
PARAMS ((const char *));
771 extern void dump_time_statistics
PARAMS ((void));