2 * This file is part of cparser.
3 * Copyright (C) 2007-2008 Matthias Braun <matze@braunis.de>
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version 2
8 * of the License, or (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
26 #include "lang_features.h"
34 #ifdef __INTEL_COMPILER
40 #include "adt/error.h"
42 struct obstack ast_obstack;
47 /** If set, implicit casts are printed. */
48 bool print_implicit_casts = false;
50 /** If set parenthesis are printed to indicate operator precedence. */
51 bool print_parenthesis = false;
53 static void print_statement(const statement_t *statement);
54 static void print_expression_prec(const expression_t *expression, unsigned prec);
56 void change_indent(int delta)
62 void print_indent(void)
64 for (int i = 0; i < indent; ++i)
69 * Returns 1 if a given precedence level has right-to-left
70 * associativity, else 0.
72 * @param precedence the operator precedence
74 static int right_to_left(unsigned precedence)
78 case PREC_CONDITIONAL:
88 * Return the precedence of an expression given by its kind.
90 * @param kind the expression kind
92 static unsigned get_expression_precedence(expression_kind_t kind)
94 static const unsigned prec[] = {
95 [EXPR_UNKNOWN] = PREC_PRIMARY,
96 [EXPR_INVALID] = PREC_PRIMARY,
97 [EXPR_REFERENCE] = PREC_PRIMARY,
98 [EXPR_REFERENCE_ENUM_VALUE] = PREC_PRIMARY,
99 [EXPR_CHARACTER_CONSTANT] = PREC_PRIMARY,
100 [EXPR_WIDE_CHARACTER_CONSTANT] = PREC_PRIMARY,
101 [EXPR_CONST] = PREC_PRIMARY,
102 [EXPR_STRING_LITERAL] = PREC_PRIMARY,
103 [EXPR_WIDE_STRING_LITERAL] = PREC_PRIMARY,
104 [EXPR_COMPOUND_LITERAL] = PREC_UNARY,
105 [EXPR_CALL] = PREC_POSTFIX,
106 [EXPR_CONDITIONAL] = PREC_CONDITIONAL,
107 [EXPR_SELECT] = PREC_POSTFIX,
108 [EXPR_ARRAY_ACCESS] = PREC_POSTFIX,
109 [EXPR_SIZEOF] = PREC_UNARY,
110 [EXPR_CLASSIFY_TYPE] = PREC_UNARY,
111 [EXPR_ALIGNOF] = PREC_UNARY,
113 [EXPR_FUNCNAME] = PREC_PRIMARY,
114 [EXPR_BUILTIN_SYMBOL] = PREC_PRIMARY,
115 [EXPR_BUILTIN_CONSTANT_P] = PREC_PRIMARY,
116 [EXPR_BUILTIN_PREFETCH] = PREC_PRIMARY,
117 [EXPR_OFFSETOF] = PREC_PRIMARY,
118 [EXPR_VA_START] = PREC_PRIMARY,
119 [EXPR_VA_ARG] = PREC_PRIMARY,
120 [EXPR_STATEMENT] = PREC_PRIMARY,
121 [EXPR_LABEL_ADDRESS] = PREC_PRIMARY,
123 [EXPR_UNARY_NEGATE] = PREC_UNARY,
124 [EXPR_UNARY_PLUS] = PREC_UNARY,
125 [EXPR_UNARY_BITWISE_NEGATE] = PREC_UNARY,
126 [EXPR_UNARY_NOT] = PREC_UNARY,
127 [EXPR_UNARY_DEREFERENCE] = PREC_UNARY,
128 [EXPR_UNARY_TAKE_ADDRESS] = PREC_UNARY,
129 [EXPR_UNARY_POSTFIX_INCREMENT] = PREC_POSTFIX,
130 [EXPR_UNARY_POSTFIX_DECREMENT] = PREC_POSTFIX,
131 [EXPR_UNARY_PREFIX_INCREMENT] = PREC_UNARY,
132 [EXPR_UNARY_PREFIX_DECREMENT] = PREC_UNARY,
133 [EXPR_UNARY_CAST] = PREC_UNARY,
134 [EXPR_UNARY_CAST_IMPLICIT] = PREC_UNARY,
135 [EXPR_UNARY_ASSUME] = PREC_PRIMARY,
136 [EXPR_UNARY_DELETE] = PREC_UNARY,
137 [EXPR_UNARY_DELETE_ARRAY] = PREC_UNARY,
138 [EXPR_UNARY_THROW] = PREC_ASSIGNMENT,
140 [EXPR_BINARY_ADD] = PREC_ADDITIVE,
141 [EXPR_BINARY_SUB] = PREC_ADDITIVE,
142 [EXPR_BINARY_MUL] = PREC_MULTIPLICATIVE,
143 [EXPR_BINARY_DIV] = PREC_MULTIPLICATIVE,
144 [EXPR_BINARY_MOD] = PREC_MULTIPLICATIVE,
145 [EXPR_BINARY_EQUAL] = PREC_EQUALITY,
146 [EXPR_BINARY_NOTEQUAL] = PREC_EQUALITY,
147 [EXPR_BINARY_LESS] = PREC_RELATIONAL,
148 [EXPR_BINARY_LESSEQUAL] = PREC_RELATIONAL,
149 [EXPR_BINARY_GREATER] = PREC_RELATIONAL,
150 [EXPR_BINARY_GREATEREQUAL] = PREC_RELATIONAL,
151 [EXPR_BINARY_BITWISE_AND] = PREC_AND,
152 [EXPR_BINARY_BITWISE_OR] = PREC_OR,
153 [EXPR_BINARY_BITWISE_XOR] = PREC_XOR,
154 [EXPR_BINARY_LOGICAL_AND] = PREC_LOGICAL_AND,
155 [EXPR_BINARY_LOGICAL_OR] = PREC_LOGICAL_OR,
156 [EXPR_BINARY_SHIFTLEFT] = PREC_SHIFT,
157 [EXPR_BINARY_SHIFTRIGHT] = PREC_SHIFT,
158 [EXPR_BINARY_ASSIGN] = PREC_ASSIGNMENT,
159 [EXPR_BINARY_MUL_ASSIGN] = PREC_ASSIGNMENT,
160 [EXPR_BINARY_DIV_ASSIGN] = PREC_ASSIGNMENT,
161 [EXPR_BINARY_MOD_ASSIGN] = PREC_ASSIGNMENT,
162 [EXPR_BINARY_ADD_ASSIGN] = PREC_ASSIGNMENT,
163 [EXPR_BINARY_SUB_ASSIGN] = PREC_ASSIGNMENT,
164 [EXPR_BINARY_SHIFTLEFT_ASSIGN] = PREC_ASSIGNMENT,
165 [EXPR_BINARY_SHIFTRIGHT_ASSIGN] = PREC_ASSIGNMENT,
166 [EXPR_BINARY_BITWISE_AND_ASSIGN] = PREC_ASSIGNMENT,
167 [EXPR_BINARY_BITWISE_XOR_ASSIGN] = PREC_ASSIGNMENT,
168 [EXPR_BINARY_BITWISE_OR_ASSIGN] = PREC_ASSIGNMENT,
169 [EXPR_BINARY_COMMA] = PREC_EXPRESSION,
171 [EXPR_BINARY_BUILTIN_EXPECT] = PREC_PRIMARY,
172 [EXPR_BINARY_ISGREATER] = PREC_PRIMARY,
173 [EXPR_BINARY_ISGREATEREQUAL] = PREC_PRIMARY,
174 [EXPR_BINARY_ISLESS] = PREC_PRIMARY,
175 [EXPR_BINARY_ISLESSEQUAL] = PREC_PRIMARY,
176 [EXPR_BINARY_ISLESSGREATER] = PREC_PRIMARY,
177 [EXPR_BINARY_ISUNORDERED] = PREC_PRIMARY
179 assert((unsigned)kind < (sizeof(prec)/sizeof(prec[0])));
180 unsigned res = prec[kind];
182 assert(res != PREC_BOTTOM);
187 * Print a constant expression.
189 * @param cnst the constant expression
191 static void print_const(const const_expression_t *cnst)
193 if (cnst->base.type == NULL)
196 const type_t *const type = skip_typeref(cnst->base.type);
198 if (is_type_atomic(type, ATOMIC_TYPE_BOOL)) {
199 fputs(cnst->v.int_value ? "true" : "false", out);
200 } else if (is_type_integer(type)) {
201 fprintf(out, "%lld", cnst->v.int_value);
202 } else if (is_type_float(type)) {
203 long double const val = cnst->v.float_value;
205 /* ARG, no way to print long double */
206 fprintf(out, "%.20g", (double)val);
208 fprintf(out, "%.20Lg", val);
210 if (isfinite(val) && truncl(val) == val)
213 panic("unknown constant");
217 switch (type->atomic.akind) {
218 case ATOMIC_TYPE_UINT: suffix = "U"; break;
219 case ATOMIC_TYPE_LONG: suffix = "L"; break;
220 case ATOMIC_TYPE_ULONG: suffix = "UL"; break;
221 case ATOMIC_TYPE_LONGLONG: suffix = "LL"; break;
222 case ATOMIC_TYPE_ULONGLONG: suffix = "ULL"; break;
223 case ATOMIC_TYPE_FLOAT: suffix = "F"; break;
224 case ATOMIC_TYPE_LONG_DOUBLE: suffix = "L"; break;
232 * Print a quoted string constant.
234 * @param string the string constant
235 * @param border the border char
236 * @param skip number of chars to skip at the end
238 static void print_quoted_string(const string_t *const string, char border, int skip)
241 const char *end = string->begin + string->size - skip;
242 for (const char *c = string->begin; c != end; ++c) {
247 case '\\': fputs("\\\\", out); break;
248 case '\a': fputs("\\a", out); break;
249 case '\b': fputs("\\b", out); break;
250 case '\f': fputs("\\f", out); break;
251 case '\n': fputs("\\n", out); break;
252 case '\r': fputs("\\r", out); break;
253 case '\t': fputs("\\t", out); break;
254 case '\v': fputs("\\v", out); break;
255 case '\?': fputs("\\?", out); break;
257 if (c_mode & _GNUC) {
258 fputs("\\e", out); break;
263 fprintf(out, "\\%03o", (unsigned)*c);
274 * Prints a wide string literal expression.
276 * @param wstr the wide string literal expression
277 * @param border the border char
278 * @param skip number of chars to skip at the end
280 static void print_quoted_wide_string(const wide_string_t *const wstr,
281 char border, int skip)
285 const wchar_rep_t *end = wstr->begin + wstr->size - skip;
286 for (const wchar_rep_t *c = wstr->begin; c != end; ++c) {
288 case L'\"': fputs("\\\"", out); break;
289 case L'\\': fputs("\\\\", out); break;
290 case L'\a': fputs("\\a", out); break;
291 case L'\b': fputs("\\b", out); break;
292 case L'\f': fputs("\\f", out); break;
293 case L'\n': fputs("\\n", out); break;
294 case L'\r': fputs("\\r", out); break;
295 case L'\t': fputs("\\t", out); break;
296 case L'\v': fputs("\\v", out); break;
297 case L'\?': fputs("\\?", out); break;
299 if (c_mode & _GNUC) {
300 fputs("\\e", out); break;
304 const unsigned tc = *c;
307 fprintf(out, "\\%03o", (char)*c);
311 } else if (tc < 0x800) {
312 fputc(0xC0 | (tc >> 6), out);
313 fputc(0x80 | (tc & 0x3F), out);
314 } else if (tc < 0x10000) {
315 fputc(0xE0 | ( tc >> 12), out);
316 fputc(0x80 | ((tc >> 6) & 0x3F), out);
317 fputc(0x80 | ( tc & 0x3F), out);
319 fputc(0xF0 | ( tc >> 18), out);
320 fputc(0x80 | ((tc >> 12) & 0x3F), out);
321 fputc(0x80 | ((tc >> 6) & 0x3F), out);
322 fputc(0x80 | ( tc & 0x3F), out);
331 * Print a constant character expression.
333 * @param cnst the constant character expression
335 static void print_character_constant(const const_expression_t *cnst)
337 print_quoted_string(&cnst->v.character, '\'', 0);
340 static void print_wide_character_constant(const const_expression_t *cnst)
342 print_quoted_wide_string(&cnst->v.wide_character, '\'', 0);
346 * Prints a string literal expression.
348 * @param string_literal the string literal expression
350 static void print_string_literal(
351 const string_literal_expression_t *string_literal)
353 print_quoted_string(&string_literal->value, '"', 1);
357 * Prints a predefined symbol.
359 static void print_funcname(const funcname_expression_t *funcname)
362 switch (funcname->kind) {
363 case FUNCNAME_FUNCTION: s = (c_mode & _C99) ? "__func__" : "__FUNCTION__"; break;
364 case FUNCNAME_PRETTY_FUNCTION: s = "__PRETTY_FUNCTION__"; break;
365 case FUNCNAME_FUNCSIG: s = "__FUNCSIG__"; break;
366 case FUNCNAME_FUNCDNAME: s = "__FUNCDNAME__"; break;
371 static void print_wide_string_literal(
372 const wide_string_literal_expression_t *const wstr)
374 print_quoted_wide_string(&wstr->value, '"', 1);
377 static void print_compound_literal(
378 const compound_literal_expression_t *expression)
381 print_type(expression->type);
383 print_initializer(expression->initializer);
387 * Prints a call expression.
389 * @param call the call expression
391 static void print_call_expression(const call_expression_t *call)
393 unsigned prec = get_expression_precedence(call->base.kind);
394 print_expression_prec(call->function, prec);
396 call_argument_t *argument = call->arguments;
398 while (argument != NULL) {
404 print_expression_prec(argument->expression, PREC_ASSIGNMENT);
406 argument = argument->next;
412 * Prints a binary expression.
414 * @param binexpr the binary expression
416 static void print_binary_expression(const binary_expression_t *binexpr)
418 unsigned prec = get_expression_precedence(binexpr->base.kind);
419 int r2l = right_to_left(prec);
421 if (binexpr->base.kind == EXPR_BINARY_BUILTIN_EXPECT) {
422 fputs("__builtin_expect(", out);
423 print_expression_prec(binexpr->left, prec);
425 print_expression_prec(binexpr->right, prec);
430 print_expression_prec(binexpr->left, prec + r2l);
432 switch (binexpr->base.kind) {
433 case EXPR_BINARY_COMMA: op = ", "; break;
434 case EXPR_BINARY_ASSIGN: op = " = "; break;
435 case EXPR_BINARY_ADD: op = " + "; break;
436 case EXPR_BINARY_SUB: op = " - "; break;
437 case EXPR_BINARY_MUL: op = " * "; break;
438 case EXPR_BINARY_MOD: op = " % "; break;
439 case EXPR_BINARY_DIV: op = " / "; break;
440 case EXPR_BINARY_BITWISE_OR: op = " | "; break;
441 case EXPR_BINARY_BITWISE_AND: op = " & "; break;
442 case EXPR_BINARY_BITWISE_XOR: op = " ^ "; break;
443 case EXPR_BINARY_LOGICAL_OR: op = " || "; break;
444 case EXPR_BINARY_LOGICAL_AND: op = " && "; break;
445 case EXPR_BINARY_NOTEQUAL: op = " != "; break;
446 case EXPR_BINARY_EQUAL: op = " == "; break;
447 case EXPR_BINARY_LESS: op = " < "; break;
448 case EXPR_BINARY_LESSEQUAL: op = " <= "; break;
449 case EXPR_BINARY_GREATER: op = " > "; break;
450 case EXPR_BINARY_GREATEREQUAL: op = " >= "; break;
451 case EXPR_BINARY_SHIFTLEFT: op = " << "; break;
452 case EXPR_BINARY_SHIFTRIGHT: op = " >> "; break;
454 case EXPR_BINARY_ADD_ASSIGN: op = " += "; break;
455 case EXPR_BINARY_SUB_ASSIGN: op = " -= "; break;
456 case EXPR_BINARY_MUL_ASSIGN: op = " *= "; break;
457 case EXPR_BINARY_MOD_ASSIGN: op = " %= "; break;
458 case EXPR_BINARY_DIV_ASSIGN: op = " /= "; break;
459 case EXPR_BINARY_BITWISE_OR_ASSIGN: op = " |= "; break;
460 case EXPR_BINARY_BITWISE_AND_ASSIGN: op = " &= "; break;
461 case EXPR_BINARY_BITWISE_XOR_ASSIGN: op = " ^= "; break;
462 case EXPR_BINARY_SHIFTLEFT_ASSIGN: op = " <<= "; break;
463 case EXPR_BINARY_SHIFTRIGHT_ASSIGN: op = " >>= "; break;
464 default: panic("invalid binexpression found");
467 print_expression_prec(binexpr->right, prec + 1 - r2l);
471 * Prints an unary expression.
473 * @param unexpr the unary expression
475 static void print_unary_expression(const unary_expression_t *unexpr)
477 unsigned prec = get_expression_precedence(unexpr->base.kind);
478 switch (unexpr->base.kind) {
479 case EXPR_UNARY_NEGATE: fputc('-', out); break;
480 case EXPR_UNARY_PLUS: fputc('+', out); break;
481 case EXPR_UNARY_NOT: fputc('!', out); break;
482 case EXPR_UNARY_BITWISE_NEGATE: fputc('~', out); break;
483 case EXPR_UNARY_PREFIX_INCREMENT: fputs("++", out); break;
484 case EXPR_UNARY_PREFIX_DECREMENT: fputs("--", out); break;
485 case EXPR_UNARY_DEREFERENCE: fputc('*', out); break;
486 case EXPR_UNARY_TAKE_ADDRESS: fputc('&', out); break;
487 case EXPR_UNARY_DELETE: fputs("delete ", out); break;
488 case EXPR_UNARY_DELETE_ARRAY: fputs("delete [] ", out); break;
490 case EXPR_UNARY_POSTFIX_INCREMENT:
491 print_expression_prec(unexpr->value, prec);
494 case EXPR_UNARY_POSTFIX_DECREMENT:
495 print_expression_prec(unexpr->value, prec);
498 case EXPR_UNARY_CAST_IMPLICIT:
499 case EXPR_UNARY_CAST:
501 print_type(unexpr->base.type);
504 case EXPR_UNARY_ASSUME:
505 fputs("__assume(", out);
506 print_expression_prec(unexpr->value, PREC_ASSIGNMENT);
510 case EXPR_UNARY_THROW:
511 if (unexpr->value == NULL) {
515 fputs("throw ", out);
519 panic("invalid unary expression found");
521 print_expression_prec(unexpr->value, prec);
525 * Prints a reference expression.
527 * @param ref the reference expression
529 static void print_reference_expression(const reference_expression_t *ref)
531 fputs(ref->entity->base.symbol->string, out);
535 * Prints a label address expression.
537 * @param ref the reference expression
539 static void print_label_address_expression(const label_address_expression_t *le)
541 fprintf(out, "&&%s", le->label->base.symbol->string);
545 * Prints an array expression.
547 * @param expression the array expression
549 static void print_array_expression(const array_access_expression_t *expression)
551 unsigned prec = get_expression_precedence(expression->base.kind);
552 if (!expression->flipped) {
553 print_expression_prec(expression->array_ref, prec);
555 print_expression(expression->index);
558 print_expression_prec(expression->index, prec);
560 print_expression(expression->array_ref);
566 * Prints a typeproperty expression (sizeof or __alignof__).
568 * @param expression the type property expression
570 static void print_typeprop_expression(const typeprop_expression_t *expression)
572 if (expression->base.kind == EXPR_SIZEOF) {
573 fputs("sizeof", out);
575 assert(expression->base.kind == EXPR_ALIGNOF);
576 fputs("__alignof__", out);
578 if (expression->tp_expression != NULL) {
579 /* always print the '()' here, sizeof x is right but unusual */
581 print_expression(expression->tp_expression);
585 print_type(expression->type);
591 * Prints an builtin symbol.
593 * @param expression the builtin symbol expression
595 static void print_builtin_symbol(const builtin_symbol_expression_t *expression)
597 fputs(expression->symbol->string, out);
601 * Prints a builtin constant expression.
603 * @param expression the builtin constant expression
605 static void print_builtin_constant(const builtin_constant_expression_t *expression)
607 fputs("__builtin_constant_p(", out);
608 print_expression_prec(expression->value, PREC_ASSIGNMENT);
613 * Prints a builtin prefetch expression.
615 * @param expression the builtin prefetch expression
617 static void print_builtin_prefetch(const builtin_prefetch_expression_t *expression)
619 fputs("__builtin_prefetch(", out);
620 print_expression_prec(expression->adr, PREC_ASSIGNMENT);
621 if (expression->rw) {
623 print_expression_prec(expression->rw, PREC_ASSIGNMENT);
625 if (expression->locality) {
627 print_expression_prec(expression->locality, PREC_ASSIGNMENT);
633 * Prints a conditional expression.
635 * @param expression the conditional expression
637 static void print_conditional(const conditional_expression_t *expression)
639 print_expression_prec(expression->condition, PREC_LOGICAL_OR);
641 if (expression->true_expression != NULL) {
642 print_expression_prec(expression->true_expression, PREC_EXPRESSION);
647 precedence_t prec = c_mode & _CXX ? PREC_ASSIGNMENT : PREC_CONDITIONAL;
648 print_expression_prec(expression->false_expression, prec);
652 * Prints a va_start expression.
654 * @param expression the va_start expression
656 static void print_va_start(const va_start_expression_t *const expression)
658 fputs("__builtin_va_start(", out);
659 print_expression_prec(expression->ap, PREC_ASSIGNMENT);
661 fputs(expression->parameter->base.base.symbol->string, out);
666 * Prints a va_arg expression.
668 * @param expression the va_arg expression
670 static void print_va_arg(const va_arg_expression_t *expression)
672 fputs("__builtin_va_arg(", out);
673 print_expression_prec(expression->ap, PREC_ASSIGNMENT);
675 print_type(expression->base.type);
680 * Prints a select expression (. or ->).
682 * @param expression the select expression
684 static void print_select(const select_expression_t *expression)
686 unsigned prec = get_expression_precedence(expression->base.kind);
687 print_expression_prec(expression->compound, prec);
688 if (is_type_pointer(skip_typeref(expression->compound->base.type))) {
693 fputs(expression->compound_entry->base.symbol->string, out);
697 * Prints a type classify expression.
699 * @param expr the type classify expression
701 static void print_classify_type_expression(
702 const classify_type_expression_t *const expr)
704 fputs("__builtin_classify_type(", out);
705 print_expression_prec(expr->type_expression, PREC_ASSIGNMENT);
710 * Prints a designator.
712 * @param designator the designator
714 static void print_designator(const designator_t *designator)
716 for ( ; designator != NULL; designator = designator->next) {
717 if (designator->symbol == NULL) {
719 print_expression(designator->array_index);
723 fputs(designator->symbol->string, out);
729 * Prints an offsetof expression.
731 * @param expression the offset expression
733 static void print_offsetof_expression(const offsetof_expression_t *expression)
735 fputs("__builtin_offsetof", out);
737 print_type(expression->type);
739 print_designator(expression->designator);
744 * Prints a statement expression.
746 * @param expression the statement expression
748 static void print_statement_expression(const statement_expression_t *expression)
751 print_statement(expression->statement);
756 * Prints an expression with parenthesis if needed.
758 * @param expression the expression to print
759 * @param top_prec the precedence of the user of this expression.
761 static void print_expression_prec(const expression_t *expression, unsigned top_prec)
763 if (expression->kind == EXPR_UNARY_CAST_IMPLICIT && !print_implicit_casts) {
764 expression = expression->unary.value;
766 unsigned prec = get_expression_precedence(expression->base.kind);
767 if (print_parenthesis && top_prec != PREC_BOTTOM)
771 switch (expression->kind) {
774 fputs("$invalid expression$", out);
776 case EXPR_CHARACTER_CONSTANT:
777 print_character_constant(&expression->conste);
779 case EXPR_WIDE_CHARACTER_CONSTANT:
780 print_wide_character_constant(&expression->conste);
783 print_const(&expression->conste);
786 print_funcname(&expression->funcname);
788 case EXPR_STRING_LITERAL:
789 print_string_literal(&expression->string);
791 case EXPR_WIDE_STRING_LITERAL:
792 print_wide_string_literal(&expression->wide_string);
794 case EXPR_COMPOUND_LITERAL:
795 print_compound_literal(&expression->compound_literal);
798 print_call_expression(&expression->call);
801 print_binary_expression(&expression->binary);
804 case EXPR_REFERENCE_ENUM_VALUE:
805 print_reference_expression(&expression->reference);
807 case EXPR_ARRAY_ACCESS:
808 print_array_expression(&expression->array_access);
810 case EXPR_LABEL_ADDRESS:
811 print_label_address_expression(&expression->label_address);
814 print_unary_expression(&expression->unary);
818 print_typeprop_expression(&expression->typeprop);
820 case EXPR_BUILTIN_SYMBOL:
821 print_builtin_symbol(&expression->builtin_symbol);
823 case EXPR_BUILTIN_CONSTANT_P:
824 print_builtin_constant(&expression->builtin_constant);
826 case EXPR_BUILTIN_PREFETCH:
827 print_builtin_prefetch(&expression->builtin_prefetch);
829 case EXPR_CONDITIONAL:
830 print_conditional(&expression->conditional);
833 print_va_start(&expression->va_starte);
836 print_va_arg(&expression->va_arge);
839 print_select(&expression->select);
841 case EXPR_CLASSIFY_TYPE:
842 print_classify_type_expression(&expression->classify_type);
845 print_offsetof_expression(&expression->offsetofe);
848 print_statement_expression(&expression->statement);
853 fprintf(out, "some expression of type %d", (int)expression->kind);
861 * Print an compound statement.
863 * @param block the compound statement
865 static void print_compound_statement(const compound_statement_t *block)
870 statement_t *statement = block->statements;
871 while (statement != NULL) {
872 if (statement->base.kind == STATEMENT_CASE_LABEL)
874 if (statement->kind != STATEMENT_LABEL)
876 print_statement(statement);
878 statement = statement->base.next;
886 * Print a return statement.
888 * @param statement the return statement
890 static void print_return_statement(const return_statement_t *statement)
892 fputs("return ", out);
893 if (statement->value != NULL)
894 print_expression(statement->value);
899 * Print an expression statement.
901 * @param statement the expression statement
903 static void print_expression_statement(const expression_statement_t *statement)
905 print_expression(statement->expression);
910 * Print a goto statement.
912 * @param statement the goto statement
914 static void print_goto_statement(const goto_statement_t *statement)
917 if (statement->expression != NULL) {
919 print_expression(statement->expression);
921 fputs(statement->label->base.symbol->string, out);
927 * Print a label statement.
929 * @param statement the label statement
931 static void print_label_statement(const label_statement_t *statement)
933 fprintf(out, "%s:\n", statement->label->base.symbol->string);
935 print_statement(statement->statement);
939 * Print an if statement.
941 * @param statement the if statement
943 static void print_if_statement(const if_statement_t *statement)
946 print_expression(statement->condition);
948 print_statement(statement->true_statement);
950 if (statement->false_statement != NULL) {
953 print_statement(statement->false_statement);
958 * Print a switch statement.
960 * @param statement the switch statement
962 static void print_switch_statement(const switch_statement_t *statement)
964 fputs("switch (", out);
965 print_expression(statement->expression);
967 print_statement(statement->body);
971 * Print a case label (including the default label).
973 * @param statement the case label statement
975 static void print_case_label(const case_label_statement_t *statement)
977 if (statement->expression == NULL) {
978 fputs("default:\n", out);
981 print_expression(statement->expression);
982 if (statement->end_range != NULL) {
984 print_expression(statement->end_range);
989 if (statement->statement != NULL) {
990 if (statement->statement->base.kind == STATEMENT_CASE_LABEL) {
994 print_statement(statement->statement);
998 static void print_local_label(const local_label_statement_t *statement)
1000 fputs("__label__ ", out);
1003 entity_t *entity = statement->labels_begin;
1005 entity != statement->labels_end->base.next;
1006 entity = entity->base.next) {
1012 fputs(entity->base.symbol->string, out);
1017 static void print_typedef(const entity_t *entity)
1019 fputs("typedef ", out);
1020 print_type_ext(entity->typedefe.type, entity->base.symbol, NULL);
1025 * returns true if the entity is a compiler generated one and has no real
1026 * correspondenc in the source file
1028 static bool is_generated_entity(const entity_t *entity)
1030 if (entity->kind == ENTITY_TYPEDEF)
1031 return entity->typedefe.builtin;
1033 if (is_declaration(entity))
1034 return entity->declaration.implicit;
1040 * Print a declaration statement.
1042 * @param statement the statement
1044 static void print_declaration_statement(
1045 const declaration_statement_t *statement)
1048 entity_t *entity = statement->declarations_begin;
1050 entity != statement->declarations_end->base.next;
1051 entity = entity->base.next) {
1052 if (!is_declaration(entity) && entity->kind != ENTITY_TYPEDEF)
1054 if (is_generated_entity(entity))
1063 if (entity->kind == ENTITY_TYPEDEF) {
1064 print_typedef(entity);
1066 assert(is_declaration(entity));
1067 print_declaration(entity);
1075 * Print a while statement.
1077 * @param statement the statement
1079 static void print_while_statement(const while_statement_t *statement)
1081 fputs("while (", out);
1082 print_expression(statement->condition);
1084 print_statement(statement->body);
1088 * Print a do-while statement.
1090 * @param statement the statement
1092 static void print_do_while_statement(const do_while_statement_t *statement)
1095 print_statement(statement->body);
1097 fputs("while (", out);
1098 print_expression(statement->condition);
1103 * Print a for statement.
1105 * @param statement the statement
1107 static void print_for_statement(const for_statement_t *statement)
1109 fputs("for (", out);
1110 entity_t *entity = statement->scope.entities;
1111 while (entity != NULL && is_generated_entity(entity))
1112 entity = entity->base.next;
1114 if (entity != NULL) {
1115 assert(statement->initialisation == NULL);
1116 assert(is_declaration(entity));
1117 print_declaration(entity);
1118 if (entity->base.next != NULL) {
1119 panic("multiple declarations in for statement not supported yet");
1123 if (statement->initialisation) {
1124 print_expression(statement->initialisation);
1128 if (statement->condition != NULL) {
1129 print_expression(statement->condition);
1132 if (statement->step != NULL) {
1133 print_expression(statement->step);
1136 print_statement(statement->body);
1140 * Print assembler arguments.
1142 * @param arguments the arguments
1144 static void print_asm_arguments(asm_argument_t *arguments)
1146 asm_argument_t *argument = arguments;
1147 for (; argument != NULL; argument = argument->next) {
1148 if (argument != arguments)
1151 if (argument->symbol) {
1152 fprintf(out, "[%s] ", argument->symbol->string);
1154 print_quoted_string(&argument->constraints, '"', 1);
1156 print_expression(argument->expression);
1162 * Print assembler clobbers.
1164 * @param clobbers the clobbers
1166 static void print_asm_clobbers(asm_clobber_t *clobbers)
1168 asm_clobber_t *clobber = clobbers;
1169 for (; clobber != NULL; clobber = clobber->next) {
1170 if (clobber != clobbers)
1173 print_quoted_string(&clobber->clobber, '"', 1);
1178 * Print an assembler statement.
1180 * @param statement the statement
1182 static void print_asm_statement(const asm_statement_t *statement)
1185 if (statement->is_volatile) {
1186 fputs("volatile ", out);
1189 print_quoted_string(&statement->asm_text, '"', 1);
1190 if (statement->outputs == NULL &&
1191 statement->inputs == NULL &&
1192 statement->clobbers == NULL)
1193 goto end_of_print_asm_statement;
1196 print_asm_arguments(statement->outputs);
1197 if (statement->inputs == NULL && statement->clobbers == NULL)
1198 goto end_of_print_asm_statement;
1201 print_asm_arguments(statement->inputs);
1202 if (statement->clobbers == NULL)
1203 goto end_of_print_asm_statement;
1206 print_asm_clobbers(statement->clobbers);
1208 end_of_print_asm_statement:
1213 * Print a microsoft __try statement.
1215 * @param statement the statement
1217 static void print_ms_try_statement(const ms_try_statement_t *statement)
1219 fputs("__try ", out);
1220 print_statement(statement->try_statement);
1222 if (statement->except_expression != NULL) {
1223 fputs("__except(", out);
1224 print_expression(statement->except_expression);
1227 fputs("__finally ", out);
1229 print_statement(statement->final_statement);
1233 * Print a microsoft __leave statement.
1235 * @param statement the statement
1237 static void print_leave_statement(const leave_statement_t *statement)
1240 fputs("__leave;\n", out);
1244 * Print a statement.
1246 * @param statement the statement
1248 void print_statement(const statement_t *statement)
1250 switch (statement->kind) {
1251 case STATEMENT_EMPTY:
1254 case STATEMENT_COMPOUND:
1255 print_compound_statement(&statement->compound);
1257 case STATEMENT_RETURN:
1258 print_return_statement(&statement->returns);
1260 case STATEMENT_EXPRESSION:
1261 print_expression_statement(&statement->expression);
1263 case STATEMENT_LABEL:
1264 print_label_statement(&statement->label);
1266 case STATEMENT_LOCAL_LABEL:
1267 print_local_label(&statement->local_label);
1269 case STATEMENT_GOTO:
1270 print_goto_statement(&statement->gotos);
1272 case STATEMENT_CONTINUE:
1273 fputs("continue;\n", out);
1275 case STATEMENT_BREAK:
1276 fputs("break;\n", out);
1279 print_if_statement(&statement->ifs);
1281 case STATEMENT_SWITCH:
1282 print_switch_statement(&statement->switchs);
1284 case STATEMENT_CASE_LABEL:
1285 print_case_label(&statement->case_label);
1287 case STATEMENT_DECLARATION:
1288 print_declaration_statement(&statement->declaration);
1290 case STATEMENT_WHILE:
1291 print_while_statement(&statement->whiles);
1293 case STATEMENT_DO_WHILE:
1294 print_do_while_statement(&statement->do_while);
1297 print_for_statement(&statement->fors);
1300 print_asm_statement(&statement->asms);
1302 case STATEMENT_MS_TRY:
1303 print_ms_try_statement(&statement->ms_try);
1305 case STATEMENT_LEAVE:
1306 print_leave_statement(&statement->leave);
1308 case STATEMENT_INVALID:
1309 fputs("$invalid statement$\n", out);
1315 * Print a storage class.
1317 * @param storage_class the storage class
1319 static void print_storage_class(storage_class_tag_t storage_class)
1322 switch (storage_class) {
1323 case STORAGE_CLASS_NONE: return;
1324 case STORAGE_CLASS_TYPEDEF: text = "typedef "; break;
1325 case STORAGE_CLASS_EXTERN: text = "extern "; break;
1326 case STORAGE_CLASS_STATIC: text = "static "; break;
1327 case STORAGE_CLASS_AUTO: text = "auto "; break;
1328 case STORAGE_CLASS_REGISTER: text = "register "; break;
1334 * Print an initializer.
1336 * @param initializer the initializer
1338 void print_initializer(const initializer_t *initializer)
1340 if (initializer == NULL) {
1345 switch (initializer->kind) {
1346 case INITIALIZER_VALUE: {
1347 const initializer_value_t *value = &initializer->value;
1348 print_expression(value->value);
1351 case INITIALIZER_LIST: {
1352 assert(initializer->kind == INITIALIZER_LIST);
1354 const initializer_list_t *list = &initializer->list;
1356 for (size_t i = 0 ; i < list->len; ++i) {
1357 const initializer_t *sub_init = list->initializers[i];
1358 print_initializer(list->initializers[i]);
1359 if (i < list->len-1) {
1360 if (sub_init == NULL || sub_init->kind != INITIALIZER_DESIGNATOR)
1367 case INITIALIZER_STRING:
1368 print_quoted_string(&initializer->string.string, '"', 1);
1370 case INITIALIZER_WIDE_STRING:
1371 print_quoted_wide_string(&initializer->wide_string.string, '"', 1);
1373 case INITIALIZER_DESIGNATOR:
1374 print_designator(initializer->designator.designator);
1379 panic("invalid initializer kind found");
1383 * Print microsoft extended declaration modifiers.
1385 static void print_ms_modifiers(const declaration_t *declaration)
1387 if ((c_mode & _MS) == 0)
1390 decl_modifiers_t modifiers = declaration->modifiers;
1392 bool ds_shown = false;
1393 const char *next = "(";
1395 if (declaration->base.kind == ENTITY_VARIABLE) {
1396 variable_t *variable = (variable_t*)declaration;
1397 if (variable->alignment != 0
1398 || variable->get_property_sym != NULL
1399 || variable->put_property_sym != NULL) {
1401 fputs("__declspec", out);
1405 if (variable->alignment != 0) {
1406 fputs(next, out); next = ", "; fprintf(out, "align(%u)", variable->alignment);
1408 if (variable->get_property_sym != NULL
1409 || variable->put_property_sym != NULL) {
1411 fputs(next, out); next = ", "; fputs("property(", out);
1412 if (variable->get_property_sym != NULL) {
1413 fprintf(out, "get=%s", variable->get_property_sym->string);
1416 if (variable->put_property_sym != NULL)
1417 fprintf(out, "%sput=%s", comma, variable->put_property_sym->string);
1423 /* DM_FORCEINLINE handled outside. */
1424 if ((modifiers & ~DM_FORCEINLINE) != 0) {
1426 fputs("__declspec", out);
1429 if (modifiers & DM_DLLIMPORT) {
1430 fputs(next, out); next = ", "; fputs("dllimport", out);
1432 if (modifiers & DM_DLLEXPORT) {
1433 fputs(next, out); next = ", "; fputs("dllexport", out);
1435 if (modifiers & DM_THREAD) {
1436 fputs(next, out); next = ", "; fputs("thread", out);
1438 if (modifiers & DM_NAKED) {
1439 fputs(next, out); next = ", "; fputs("naked", out);
1441 if (modifiers & DM_THREAD) {
1442 fputs(next, out); next = ", "; fputs("thread", out);
1444 if (modifiers & DM_SELECTANY) {
1445 fputs(next, out); next = ", "; fputs("selectany", out);
1447 if (modifiers & DM_NOTHROW) {
1448 fputs(next, out); next = ", "; fputs("nothrow", out);
1450 if (modifiers & DM_NORETURN) {
1451 fputs(next, out); next = ", "; fputs("noreturn", out);
1453 if (modifiers & DM_NOINLINE) {
1454 fputs(next, out); next = ", "; fputs("noinline", out);
1456 if (modifiers & DM_DEPRECATED) {
1457 fputs(next, out); next = ", "; fputs("deprecated", out);
1458 if (declaration->deprecated_string != NULL)
1459 fprintf(out, "(\"%s\")",
1460 declaration->deprecated_string);
1462 if (modifiers & DM_RESTRICT) {
1463 fputs(next, out); next = ", "; fputs("restrict", out);
1465 if (modifiers & DM_NOALIAS) {
1466 fputs(next, out); next = ", "; fputs("noalias", out);
1474 static void print_scope(const scope_t *scope)
1476 const entity_t *entity = scope->entities;
1477 for ( ; entity != NULL; entity = entity->base.next) {
1479 print_entity(entity);
1484 static void print_namespace(const namespace_t *namespace)
1486 fputs("namespace ", out);
1487 if (namespace->base.symbol != NULL) {
1488 fputs(namespace->base.symbol->string, out);
1495 print_scope(&namespace->members);
1503 * Print a variable or function declaration
1505 void print_declaration(const entity_t *entity)
1507 assert(is_declaration(entity));
1508 const declaration_t *declaration = &entity->declaration;
1510 print_storage_class((storage_class_tag_t)declaration->declared_storage_class);
1511 if (entity->kind == ENTITY_FUNCTION) {
1512 function_t *function = (function_t*)declaration;
1513 if (function->is_inline) {
1514 if (declaration->modifiers & DM_FORCEINLINE) {
1515 fputs("__forceinline ", out);
1516 } else if (declaration->modifiers & DM_MICROSOFT_INLINE) {
1517 fputs("__inline ", out);
1519 fputs("inline ", out);
1523 print_ms_modifiers(declaration);
1524 switch (entity->kind) {
1525 case ENTITY_FUNCTION:
1526 print_type_ext(entity->declaration.type, entity->base.symbol,
1527 &entity->function.parameters);
1529 if (entity->function.statement != NULL) {
1532 print_statement(entity->function.statement);
1537 case ENTITY_VARIABLE:
1538 if (entity->variable.thread_local)
1539 fputs("__thread ", out);
1540 print_type_ext(declaration->type, declaration->base.symbol, NULL);
1541 if (entity->variable.initializer != NULL) {
1543 print_initializer(entity->variable.initializer);
1548 print_type_ext(declaration->type, declaration->base.symbol, NULL);
1555 * Prints an expression.
1557 * @param expression the expression
1559 void print_expression(const expression_t *expression)
1561 print_expression_prec(expression, PREC_BOTTOM);
1565 * Print a declaration.
1567 * @param declaration the declaration
1569 void print_entity(const entity_t *entity)
1571 if (entity->base.namespc != NAMESPACE_NORMAL && entity->base.symbol == NULL)
1574 switch ((entity_kind_tag_t)entity->kind) {
1575 case ENTITY_VARIABLE:
1576 case ENTITY_COMPOUND_MEMBER:
1577 print_declaration(entity);
1579 case ENTITY_FUNCTION:
1580 print_declaration(entity);
1582 case ENTITY_TYPEDEF:
1583 print_typedef(entity);
1586 fputs("struct ", out);
1587 fputs(entity->base.symbol->string, out);
1588 if (entity->structe.complete) {
1590 print_compound_definition(&entity->structe);
1595 fputs("union ", out);
1596 fputs(entity->base.symbol->string, out);
1597 if (entity->unione.complete) {
1599 print_compound_definition(&entity->unione);
1604 fputs("enum ", out);
1605 fputs(entity->base.symbol->string, out);
1607 print_enum_definition(&entity->enume);
1610 case ENTITY_NAMESPACE:
1611 print_namespace(&entity->namespacee);
1614 case ENTITY_ENUM_VALUE:
1615 case ENTITY_LOCAL_LABEL:
1616 panic("print_entity used on unexpected entity type");
1617 case ENTITY_INVALID:
1620 panic("Invalid entity type encountered");
1624 * Print the AST of a translation unit.
1626 * @param unit the translation unit
1628 void print_ast(const translation_unit_t *unit)
1632 entity_t *entity = unit->scope.entities;
1633 for ( ; entity != NULL; entity = entity->base.next) {
1634 if (entity->kind == ENTITY_ENUM_VALUE)
1636 if (entity->base.namespc != NAMESPACE_NORMAL
1637 && entity->base.symbol == NULL)
1639 if (is_generated_entity(entity))
1643 print_entity(entity);
1648 bool is_constant_initializer(const initializer_t *initializer)
1650 switch (initializer->kind) {
1651 case INITIALIZER_STRING:
1652 case INITIALIZER_WIDE_STRING:
1653 case INITIALIZER_DESIGNATOR:
1656 case INITIALIZER_VALUE:
1657 return is_constant_expression(initializer->value.value);
1659 case INITIALIZER_LIST:
1660 for (size_t i = 0; i < initializer->list.len; ++i) {
1661 initializer_t *sub_initializer = initializer->list.initializers[i];
1662 if (!is_constant_initializer(sub_initializer))
1667 panic("invalid initializer kind found");
1670 static bool is_object_with_linker_constant_address(const expression_t *expression)
1672 switch (expression->kind) {
1673 case EXPR_UNARY_DEREFERENCE:
1674 return is_address_constant(expression->unary.value);
1677 type_t *base_type = skip_typeref(expression->select.compound->base.type);
1678 if (is_type_pointer(base_type)) {
1680 return is_address_constant(expression->select.compound);
1682 return is_object_with_linker_constant_address(expression->select.compound);
1686 case EXPR_ARRAY_ACCESS:
1687 return is_constant_expression(expression->array_access.index)
1688 && is_address_constant(expression->array_access.array_ref);
1690 case EXPR_REFERENCE: {
1691 entity_t *entity = expression->reference.entity;
1692 if (is_declaration(entity)) {
1693 switch ((storage_class_tag_t)entity->declaration.storage_class) {
1694 case STORAGE_CLASS_NONE:
1695 case STORAGE_CLASS_EXTERN:
1696 case STORAGE_CLASS_STATIC:
1698 entity->kind != ENTITY_VARIABLE ||
1699 !entity->variable.thread_local;
1701 case STORAGE_CLASS_REGISTER:
1702 case STORAGE_CLASS_TYPEDEF:
1703 case STORAGE_CLASS_AUTO:
1715 bool is_address_constant(const expression_t *expression)
1717 switch (expression->kind) {
1718 case EXPR_UNARY_TAKE_ADDRESS:
1719 return is_object_with_linker_constant_address(expression->unary.value);
1721 case EXPR_UNARY_DEREFERENCE: {
1723 = revert_automatic_type_conversion(expression->unary.value);
1724 /* dereferencing a function is a NOP */
1725 if (is_type_function(real_type)) {
1726 return is_address_constant(expression->unary.value);
1731 case EXPR_UNARY_CAST: {
1732 type_t *dest = skip_typeref(expression->base.type);
1733 if (!is_type_pointer(dest) && (
1734 dest->kind != TYPE_ATOMIC ||
1735 !(get_atomic_type_flags(dest->atomic.akind) & ATOMIC_TYPE_FLAG_INTEGER) ||
1736 get_atomic_type_size(dest->atomic.akind) < get_atomic_type_size(get_intptr_kind())
1740 return (is_constant_expression(expression->unary.value)
1741 || is_address_constant(expression->unary.value));
1744 case EXPR_BINARY_ADD:
1745 case EXPR_BINARY_SUB: {
1746 expression_t *left = expression->binary.left;
1747 expression_t *right = expression->binary.right;
1749 if (is_type_pointer(skip_typeref(left->base.type))) {
1750 return is_address_constant(left) && is_constant_expression(right);
1751 } else if (is_type_pointer(skip_typeref(right->base.type))) {
1752 return is_constant_expression(left) && is_address_constant(right);
1758 case EXPR_REFERENCE: {
1759 entity_t *entity = expression->reference.entity;
1760 if (!is_declaration(entity))
1763 type_t *type = skip_typeref(entity->declaration.type);
1764 if (is_type_function(type))
1766 if (is_type_array(type)) {
1767 return is_object_with_linker_constant_address(expression);
1769 /* Prevent stray errors */
1770 if (!is_type_valid(type))
1775 case EXPR_ARRAY_ACCESS: {
1776 type_t *const type =
1777 skip_typeref(revert_automatic_type_conversion(expression));
1779 is_type_array(type) &&
1780 is_constant_expression(expression->array_access.index) &&
1781 is_address_constant(expression->array_access.array_ref);
1789 static bool is_builtin_const_call(const expression_t *expression)
1791 expression_t *function = expression->call.function;
1792 if (function->kind != EXPR_BUILTIN_SYMBOL) {
1796 symbol_t *symbol = function->builtin_symbol.symbol;
1798 switch (symbol->ID) {
1799 case T___builtin_huge_val:
1800 case T___builtin_inf:
1801 case T___builtin_inff:
1802 case T___builtin_infl:
1803 case T___builtin_nan:
1804 case T___builtin_nanf:
1805 case T___builtin_nanl:
1812 static bool is_constant_pointer(const expression_t *expression)
1814 if (is_constant_expression(expression))
1817 switch (expression->kind) {
1818 case EXPR_UNARY_CAST:
1819 return is_constant_pointer(expression->unary.value);
1825 static bool is_object_with_constant_address(const expression_t *expression)
1827 switch (expression->kind) {
1829 expression_t *compound = expression->select.compound;
1830 type_t *compound_type = compound->base.type;
1831 compound_type = skip_typeref(compound_type);
1832 if (is_type_pointer(compound_type)) {
1833 return is_constant_pointer(compound);
1835 return is_object_with_constant_address(compound);
1839 case EXPR_ARRAY_ACCESS: {
1840 array_access_expression_t const* const array_access =
1841 &expression->array_access;
1843 is_constant_expression(array_access->index) && (
1844 is_object_with_constant_address(array_access->array_ref) ||
1845 is_constant_pointer(array_access->array_ref)
1849 case EXPR_UNARY_DEREFERENCE:
1850 return is_constant_pointer(expression->unary.value);
1856 bool is_constant_expression(const expression_t *expression)
1858 switch (expression->kind) {
1861 case EXPR_CHARACTER_CONSTANT:
1862 case EXPR_WIDE_CHARACTER_CONSTANT:
1863 case EXPR_STRING_LITERAL:
1864 case EXPR_WIDE_STRING_LITERAL:
1865 case EXPR_CLASSIFY_TYPE:
1869 case EXPR_BUILTIN_CONSTANT_P:
1870 case EXPR_LABEL_ADDRESS:
1871 case EXPR_REFERENCE_ENUM_VALUE:
1875 type_t *type = expression->typeprop.type;
1877 type = expression->typeprop.tp_expression->base.type;
1879 type = skip_typeref(type);
1880 if (is_type_array(type) && type->array.is_vla)
1885 case EXPR_BUILTIN_SYMBOL:
1886 case EXPR_BUILTIN_PREFETCH:
1890 case EXPR_STATEMENT:
1891 case EXPR_REFERENCE:
1892 case EXPR_UNARY_POSTFIX_INCREMENT:
1893 case EXPR_UNARY_POSTFIX_DECREMENT:
1894 case EXPR_UNARY_PREFIX_INCREMENT:
1895 case EXPR_UNARY_PREFIX_DECREMENT:
1896 case EXPR_UNARY_ASSUME: /* has VOID type */
1897 case EXPR_UNARY_DEREFERENCE:
1898 case EXPR_UNARY_DELETE:
1899 case EXPR_UNARY_DELETE_ARRAY:
1900 case EXPR_UNARY_THROW:
1901 case EXPR_BINARY_ASSIGN:
1902 case EXPR_BINARY_MUL_ASSIGN:
1903 case EXPR_BINARY_DIV_ASSIGN:
1904 case EXPR_BINARY_MOD_ASSIGN:
1905 case EXPR_BINARY_ADD_ASSIGN:
1906 case EXPR_BINARY_SUB_ASSIGN:
1907 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
1908 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
1909 case EXPR_BINARY_BITWISE_AND_ASSIGN:
1910 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
1911 case EXPR_BINARY_BITWISE_OR_ASSIGN:
1912 case EXPR_BINARY_COMMA:
1913 case EXPR_ARRAY_ACCESS:
1916 case EXPR_UNARY_TAKE_ADDRESS:
1917 return is_object_with_constant_address(expression->unary.value);
1920 return is_builtin_const_call(expression);
1922 case EXPR_UNARY_NEGATE:
1923 case EXPR_UNARY_PLUS:
1924 case EXPR_UNARY_BITWISE_NEGATE:
1925 case EXPR_UNARY_NOT:
1926 return is_constant_expression(expression->unary.value);
1928 case EXPR_UNARY_CAST:
1929 case EXPR_UNARY_CAST_IMPLICIT:
1930 return is_type_arithmetic(skip_typeref(expression->base.type))
1931 && is_constant_expression(expression->unary.value);
1933 case EXPR_BINARY_ADD:
1934 case EXPR_BINARY_SUB:
1935 case EXPR_BINARY_MUL:
1936 case EXPR_BINARY_DIV:
1937 case EXPR_BINARY_MOD:
1938 case EXPR_BINARY_EQUAL:
1939 case EXPR_BINARY_NOTEQUAL:
1940 case EXPR_BINARY_LESS:
1941 case EXPR_BINARY_LESSEQUAL:
1942 case EXPR_BINARY_GREATER:
1943 case EXPR_BINARY_GREATEREQUAL:
1944 case EXPR_BINARY_BITWISE_AND:
1945 case EXPR_BINARY_BITWISE_OR:
1946 case EXPR_BINARY_BITWISE_XOR:
1947 case EXPR_BINARY_LOGICAL_AND:
1948 case EXPR_BINARY_LOGICAL_OR:
1949 case EXPR_BINARY_SHIFTLEFT:
1950 case EXPR_BINARY_SHIFTRIGHT:
1951 case EXPR_BINARY_BUILTIN_EXPECT:
1952 case EXPR_BINARY_ISGREATER:
1953 case EXPR_BINARY_ISGREATEREQUAL:
1954 case EXPR_BINARY_ISLESS:
1955 case EXPR_BINARY_ISLESSEQUAL:
1956 case EXPR_BINARY_ISLESSGREATER:
1957 case EXPR_BINARY_ISUNORDERED:
1958 return is_constant_expression(expression->binary.left)
1959 && is_constant_expression(expression->binary.right);
1961 case EXPR_COMPOUND_LITERAL:
1962 return is_constant_initializer(expression->compound_literal.initializer);
1964 case EXPR_CONDITIONAL: {
1965 expression_t *condition = expression->conditional.condition;
1966 if (!is_constant_expression(condition))
1969 long val = fold_constant(condition);
1971 return is_constant_expression(expression->conditional.true_expression);
1973 return is_constant_expression(expression->conditional.false_expression);
1982 panic("invalid expression found (is constant expression)");
1986 * Initialize the AST construction.
1990 obstack_init(&ast_obstack);
1998 obstack_free(&ast_obstack, NULL);
2002 * Set the output stream for the AST printer.
2004 * @param stream the output stream
2006 void ast_set_output(FILE *stream)
2009 type_set_output(stream);
2013 * Allocate an AST object of the given size.
2015 * @param size the size of the object to allocate
2017 * @return A new allocated object in the AST memeory space.
2019 void *(allocate_ast)(size_t size)
2021 return _allocate_ast(size);