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)
77 case 2*PREC_ASSIGNMENT:
78 case 2*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_UNARY,
130 [EXPR_UNARY_POSTFIX_DECREMENT] = PREC_UNARY,
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);
183 /* we need the lowest bit for right-to-left precedence */
188 * Print a constant expression.
190 * @param cnst the constant expression
192 static void print_const(const const_expression_t *cnst)
194 if(cnst->base.type == NULL)
197 const type_t *const type = skip_typeref(cnst->base.type);
199 if (is_type_atomic(type, ATOMIC_TYPE_BOOL)) {
200 fputs(cnst->v.int_value ? "true" : "false", out);
201 } else if (is_type_integer(type)) {
202 fprintf(out, "%lld", cnst->v.int_value);
203 } else if (is_type_float(type)) {
204 long double const val = cnst->v.float_value;
206 /* ARG, no way to print long double */
207 fprintf(out, "%.20g", (double)val);
209 fprintf(out, "%.20Lg", val);
211 if (isfinite(val) && truncl(val) == val)
214 panic("unknown constant");
218 switch (type->atomic.akind) {
219 case ATOMIC_TYPE_UINT: suffix = "U"; break;
220 case ATOMIC_TYPE_LONG: suffix = "L"; break;
221 case ATOMIC_TYPE_ULONG: suffix = "UL"; break;
222 case ATOMIC_TYPE_LONGLONG: suffix = "LL"; break;
223 case ATOMIC_TYPE_ULONGLONG: suffix = "ULL"; break;
224 case ATOMIC_TYPE_FLOAT: suffix = "F"; break;
225 case ATOMIC_TYPE_LONG_DOUBLE: suffix = "L"; break;
227 default: suffix = NULL; break;
234 * Print a quoted string constant.
236 * @param string the string constant
237 * @param border the border char
238 * @param skip number of chars to skip at the end
240 static void print_quoted_string(const string_t *const string, char border, int skip)
243 const char *end = string->begin + string->size - skip;
244 for (const char *c = string->begin; c != end; ++c) {
249 case '\\': fputs("\\\\", out); break;
250 case '\a': fputs("\\a", out); break;
251 case '\b': fputs("\\b", out); break;
252 case '\f': fputs("\\f", out); break;
253 case '\n': fputs("\\n", out); break;
254 case '\r': fputs("\\r", out); break;
255 case '\t': fputs("\\t", out); break;
256 case '\v': fputs("\\v", out); break;
257 case '\?': fputs("\\?", out); break;
259 if (c_mode & _GNUC) {
260 fputs("\\e", out); break;
265 fprintf(out, "\\%03o", (unsigned)*c);
276 * Prints a wide string literal expression.
278 * @param wstr the wide string literal expression
279 * @param border the border char
280 * @param skip number of chars to skip at the end
282 static void print_quoted_wide_string(const wide_string_t *const wstr,
283 char border, int skip)
287 const wchar_rep_t *end = wstr->begin + wstr->size - skip;
288 for (const wchar_rep_t *c = wstr->begin; c != end; ++c) {
290 case L'\"': fputs("\\\"", out); break;
291 case L'\\': fputs("\\\\", out); break;
292 case L'\a': fputs("\\a", out); break;
293 case L'\b': fputs("\\b", out); break;
294 case L'\f': fputs("\\f", out); break;
295 case L'\n': fputs("\\n", out); break;
296 case L'\r': fputs("\\r", out); break;
297 case L'\t': fputs("\\t", out); break;
298 case L'\v': fputs("\\v", out); break;
299 case L'\?': fputs("\\?", out); break;
301 if (c_mode & _GNUC) {
302 fputs("\\e", out); break;
306 const unsigned tc = *c;
309 fprintf(out, "\\%03o", (char)*c);
313 } else if (tc < 0x800) {
314 fputc(0xC0 | (tc >> 6), out);
315 fputc(0x80 | (tc & 0x3F), out);
316 } else if (tc < 0x10000) {
317 fputc(0xE0 | ( tc >> 12), out);
318 fputc(0x80 | ((tc >> 6) & 0x3F), out);
319 fputc(0x80 | ( tc & 0x3F), out);
321 fputc(0xF0 | ( tc >> 18), out);
322 fputc(0x80 | ((tc >> 12) & 0x3F), out);
323 fputc(0x80 | ((tc >> 6) & 0x3F), out);
324 fputc(0x80 | ( tc & 0x3F), out);
333 * Print a constant character expression.
335 * @param cnst the constant character expression
337 static void print_character_constant(const const_expression_t *cnst)
339 print_quoted_string(&cnst->v.character, '\'', 0);
342 static void print_wide_character_constant(const const_expression_t *cnst)
344 print_quoted_wide_string(&cnst->v.wide_character, '\'', 0);
348 * Prints a string literal expression.
350 * @param string_literal the string literal expression
352 static void print_string_literal(
353 const string_literal_expression_t *string_literal)
355 print_quoted_string(&string_literal->value, '"', 1);
359 * Prints a predefined symbol.
361 static void print_funcname(
362 const funcname_expression_t *funcname)
365 switch (funcname->kind) {
366 case FUNCNAME_FUNCTION: s = (c_mode & _C99) ? "__func__" : "__FUNCTION__"; break;
367 case FUNCNAME_PRETTY_FUNCTION: s = "__PRETTY_FUNCTION__"; break;
368 case FUNCNAME_FUNCSIG: s = "__FUNCSIG__"; break;
369 case FUNCNAME_FUNCDNAME: s = "__FUNCDNAME__"; break;
376 static void print_wide_string_literal(
377 const wide_string_literal_expression_t *const wstr)
379 print_quoted_wide_string(&wstr->value, '"', 1);
382 static void print_compound_literal(
383 const compound_literal_expression_t *expression)
386 print_type(expression->type);
388 print_initializer(expression->initializer);
392 * Prints a call expression.
394 * @param call the call expression
396 static void print_call_expression(const call_expression_t *call)
398 unsigned prec = get_expression_precedence(call->base.kind);
399 print_expression_prec(call->function, prec);
401 call_argument_t *argument = call->arguments;
403 while(argument != NULL) {
409 print_expression_prec(argument->expression, 2 * PREC_ASSIGNMENT);
411 argument = argument->next;
417 * Prints a binary expression.
419 * @param binexpr the binary expression
421 static void print_binary_expression(const binary_expression_t *binexpr)
423 unsigned prec = get_expression_precedence(binexpr->base.kind);
424 int r2l = right_to_left(prec);
426 if(binexpr->base.kind == EXPR_BINARY_BUILTIN_EXPECT) {
427 fputs("__builtin_expect(", out);
428 print_expression_prec(binexpr->left, prec);
430 print_expression_prec(binexpr->right, prec);
435 print_expression_prec(binexpr->left, prec + r2l);
437 switch (binexpr->base.kind) {
438 case EXPR_BINARY_COMMA: op = ", "; break;
439 case EXPR_BINARY_ASSIGN: op = " = "; break;
440 case EXPR_BINARY_ADD: op = " + "; break;
441 case EXPR_BINARY_SUB: op = " - "; break;
442 case EXPR_BINARY_MUL: op = " * "; break;
443 case EXPR_BINARY_MOD: op = " % "; break;
444 case EXPR_BINARY_DIV: op = " / "; break;
445 case EXPR_BINARY_BITWISE_OR: op = " | "; break;
446 case EXPR_BINARY_BITWISE_AND: op = " & "; break;
447 case EXPR_BINARY_BITWISE_XOR: op = " ^ "; break;
448 case EXPR_BINARY_LOGICAL_OR: op = " || "; break;
449 case EXPR_BINARY_LOGICAL_AND: op = " && "; break;
450 case EXPR_BINARY_NOTEQUAL: op = " != "; break;
451 case EXPR_BINARY_EQUAL: op = " == "; break;
452 case EXPR_BINARY_LESS: op = " < "; break;
453 case EXPR_BINARY_LESSEQUAL: op = " <= "; break;
454 case EXPR_BINARY_GREATER: op = " > "; break;
455 case EXPR_BINARY_GREATEREQUAL: op = " >= "; break;
456 case EXPR_BINARY_SHIFTLEFT: op = " << "; break;
457 case EXPR_BINARY_SHIFTRIGHT: op = " >> "; break;
459 case EXPR_BINARY_ADD_ASSIGN: op = " += "; break;
460 case EXPR_BINARY_SUB_ASSIGN: op = " -= "; break;
461 case EXPR_BINARY_MUL_ASSIGN: op = " *= "; break;
462 case EXPR_BINARY_MOD_ASSIGN: op = " %= "; break;
463 case EXPR_BINARY_DIV_ASSIGN: op = " /= "; break;
464 case EXPR_BINARY_BITWISE_OR_ASSIGN: op = " |= "; break;
465 case EXPR_BINARY_BITWISE_AND_ASSIGN: op = " &= "; break;
466 case EXPR_BINARY_BITWISE_XOR_ASSIGN: op = " ^= "; break;
467 case EXPR_BINARY_SHIFTLEFT_ASSIGN: op = " <<= "; break;
468 case EXPR_BINARY_SHIFTRIGHT_ASSIGN: op = " >>= "; break;
469 default: panic("invalid binexpression found");
472 print_expression_prec(binexpr->right, prec - r2l);
476 * Prints an unary expression.
478 * @param unexpr the unary expression
480 static void print_unary_expression(const unary_expression_t *unexpr)
482 unsigned prec = get_expression_precedence(unexpr->base.kind);
483 switch (unexpr->base.kind) {
484 case EXPR_UNARY_NEGATE: fputc('-', out); break;
485 case EXPR_UNARY_PLUS: fputc('+', out); break;
486 case EXPR_UNARY_NOT: fputc('!', out); break;
487 case EXPR_UNARY_BITWISE_NEGATE: fputc('~', out); break;
488 case EXPR_UNARY_PREFIX_INCREMENT: fputs("++", out); break;
489 case EXPR_UNARY_PREFIX_DECREMENT: fputs("--", out); break;
490 case EXPR_UNARY_DEREFERENCE: fputc('*', out); break;
491 case EXPR_UNARY_TAKE_ADDRESS: fputc('&', out); break;
492 case EXPR_UNARY_DELETE: fputs("delete ", out); break;
493 case EXPR_UNARY_DELETE_ARRAY: fputs("delete [] ", out); break;
495 case EXPR_UNARY_POSTFIX_INCREMENT:
496 print_expression_prec(unexpr->value, prec);
499 case EXPR_UNARY_POSTFIX_DECREMENT:
500 print_expression_prec(unexpr->value, prec);
503 case EXPR_UNARY_CAST_IMPLICIT:
504 case EXPR_UNARY_CAST:
506 print_type(unexpr->base.type);
509 case EXPR_UNARY_ASSUME:
510 fputs("__assume(", out);
511 print_expression_prec(unexpr->value, 2 * PREC_ASSIGNMENT);
515 case EXPR_UNARY_THROW:
516 if (unexpr->value == NULL) {
520 fputs("throw ", out);
524 panic("invalid unary expression found");
526 print_expression_prec(unexpr->value, prec);
530 * Prints a reference expression.
532 * @param ref the reference expression
534 static void print_reference_expression(const reference_expression_t *ref)
536 fputs(ref->entity->base.symbol->string, out);
540 * Prints a label address expression.
542 * @param ref the reference expression
544 static void print_label_address_expression(const label_address_expression_t *le)
546 fprintf(out, "&&%s", le->label->base.symbol->string);
550 * Prints an array expression.
552 * @param expression the array expression
554 static void print_array_expression(const array_access_expression_t *expression)
556 unsigned prec = get_expression_precedence(expression->base.kind);
557 if(!expression->flipped) {
558 print_expression_prec(expression->array_ref, prec);
560 print_expression(expression->index);
563 print_expression_prec(expression->index, prec);
565 print_expression(expression->array_ref);
571 * Prints a typeproperty expression (sizeof or __alignof__).
573 * @param expression the type property expression
575 static void print_typeprop_expression(const typeprop_expression_t *expression)
577 if (expression->base.kind == EXPR_SIZEOF) {
578 fputs("sizeof", out);
580 assert(expression->base.kind == EXPR_ALIGNOF);
581 fputs("__alignof__", out);
583 if(expression->tp_expression != NULL) {
584 /* always print the '()' here, sizeof x is right but unusual */
586 print_expression(expression->tp_expression);
590 print_type(expression->type);
596 * Prints an builtin symbol.
598 * @param expression the builtin symbol expression
600 static void print_builtin_symbol(const builtin_symbol_expression_t *expression)
602 fputs(expression->symbol->string, out);
606 * Prints a builtin constant expression.
608 * @param expression the builtin constant expression
610 static void print_builtin_constant(const builtin_constant_expression_t *expression)
612 fputs("__builtin_constant_p(", out);
613 print_expression_prec(expression->value, 2 * PREC_ASSIGNMENT);
618 * Prints a builtin prefetch expression.
620 * @param expression the builtin prefetch expression
622 static void print_builtin_prefetch(const builtin_prefetch_expression_t *expression)
624 fputs("__builtin_prefetch(", out);
625 print_expression_prec(expression->adr, 2 * PREC_ASSIGNMENT);
626 if (expression->rw) {
628 print_expression_prec(expression->rw, 2 * PREC_ASSIGNMENT);
630 if (expression->locality) {
632 print_expression_prec(expression->locality, 2 * PREC_ASSIGNMENT);
638 * Prints a conditional expression.
640 * @param expression the conditional expression
642 static void print_conditional(const conditional_expression_t *expression)
644 print_expression_prec(expression->condition, 2 * PREC_LOGICAL_OR);
646 if (expression->true_expression != NULL) {
647 print_expression_prec(expression->true_expression, 2 * PREC_EXPRESSION);
652 print_expression_prec(expression->false_expression, 2 * PREC_CONDITIONAL);
656 * Prints a va_start expression.
658 * @param expression the va_start expression
660 static void print_va_start(const va_start_expression_t *const expression)
662 fputs("__builtin_va_start(", out);
663 print_expression_prec(expression->ap, 2 * PREC_ASSIGNMENT);
665 fputs(expression->parameter->base.base.symbol->string, out);
670 * Prints a va_arg expression.
672 * @param expression the va_arg expression
674 static void print_va_arg(const va_arg_expression_t *expression)
676 fputs("__builtin_va_arg(", out);
677 print_expression_prec(expression->ap, 2 * PREC_ASSIGNMENT);
679 print_type(expression->base.type);
684 * Prints a select expression (. or ->).
686 * @param expression the select expression
688 static void print_select(const select_expression_t *expression)
690 unsigned prec = get_expression_precedence(expression->base.kind);
691 print_expression_prec(expression->compound, prec);
692 if(is_type_pointer(skip_typeref(expression->compound->base.type))) {
697 fputs(expression->compound_entry->base.symbol->string, out);
701 * Prints a type classify expression.
703 * @param expr the type classify expression
705 static void print_classify_type_expression(
706 const classify_type_expression_t *const expr)
708 fputs("__builtin_classify_type(", out);
709 print_expression_prec(expr->type_expression, 2 * PREC_ASSIGNMENT);
714 * Prints a designator.
716 * @param designator the designator
718 static void print_designator(const designator_t *designator)
720 for ( ; designator != NULL; designator = designator->next) {
721 if (designator->symbol == NULL) {
723 print_expression(designator->array_index);
727 fputs(designator->symbol->string, out);
733 * Prints an offsetof expression.
735 * @param expression the offset expression
737 static void print_offsetof_expression(const offsetof_expression_t *expression)
739 fputs("__builtin_offsetof", out);
741 print_type(expression->type);
743 print_designator(expression->designator);
748 * Prints a statement expression.
750 * @param expression the statement expression
752 static void print_statement_expression(const statement_expression_t *expression)
755 print_statement(expression->statement);
760 * Prints an expression with parenthesis if needed.
762 * @param expression the expression to print
763 * @param top_prec the precedence of the user of this expression.
765 static void print_expression_prec(const expression_t *expression, unsigned top_prec)
767 if (expression->kind == EXPR_UNARY_CAST_IMPLICIT && !print_implicit_casts) {
768 expression = expression->unary.value;
770 unsigned prec = get_expression_precedence(expression->base.kind);
771 if (print_parenthesis && top_prec != PREC_BOTTOM)
775 switch (expression->kind) {
778 fputs("$invalid expression$", out);
780 case EXPR_CHARACTER_CONSTANT:
781 print_character_constant(&expression->conste);
783 case EXPR_WIDE_CHARACTER_CONSTANT:
784 print_wide_character_constant(&expression->conste);
787 print_const(&expression->conste);
790 print_funcname(&expression->funcname);
792 case EXPR_STRING_LITERAL:
793 print_string_literal(&expression->string);
795 case EXPR_WIDE_STRING_LITERAL:
796 print_wide_string_literal(&expression->wide_string);
798 case EXPR_COMPOUND_LITERAL:
799 print_compound_literal(&expression->compound_literal);
802 print_call_expression(&expression->call);
805 print_binary_expression(&expression->binary);
808 case EXPR_REFERENCE_ENUM_VALUE:
809 print_reference_expression(&expression->reference);
811 case EXPR_ARRAY_ACCESS:
812 print_array_expression(&expression->array_access);
814 case EXPR_LABEL_ADDRESS:
815 print_label_address_expression(&expression->label_address);
818 print_unary_expression(&expression->unary);
822 print_typeprop_expression(&expression->typeprop);
824 case EXPR_BUILTIN_SYMBOL:
825 print_builtin_symbol(&expression->builtin_symbol);
827 case EXPR_BUILTIN_CONSTANT_P:
828 print_builtin_constant(&expression->builtin_constant);
830 case EXPR_BUILTIN_PREFETCH:
831 print_builtin_prefetch(&expression->builtin_prefetch);
833 case EXPR_CONDITIONAL:
834 print_conditional(&expression->conditional);
837 print_va_start(&expression->va_starte);
840 print_va_arg(&expression->va_arge);
843 print_select(&expression->select);
845 case EXPR_CLASSIFY_TYPE:
846 print_classify_type_expression(&expression->classify_type);
849 print_offsetof_expression(&expression->offsetofe);
852 print_statement_expression(&expression->statement);
857 fprintf(out, "some expression of type %d", (int) expression->kind);
865 * Print an compound statement.
867 * @param block the compound statement
869 static void print_compound_statement(const compound_statement_t *block)
874 statement_t *statement = block->statements;
875 while (statement != NULL) {
876 if (statement->base.kind == STATEMENT_CASE_LABEL)
878 if (statement->kind != STATEMENT_LABEL)
880 print_statement(statement);
882 statement = statement->base.next;
890 * Print a return statement.
892 * @param statement the return statement
894 static void print_return_statement(const return_statement_t *statement)
896 fputs("return ", out);
897 if(statement->value != NULL)
898 print_expression(statement->value);
903 * Print an expression statement.
905 * @param statement the expression statement
907 static void print_expression_statement(const expression_statement_t *statement)
909 print_expression(statement->expression);
914 * Print a goto statement.
916 * @param statement the goto statement
918 static void print_goto_statement(const goto_statement_t *statement)
921 if (statement->expression != NULL) {
923 print_expression(statement->expression);
925 fputs(statement->label->base.symbol->string, out);
931 * Print a label statement.
933 * @param statement the label statement
935 static void print_label_statement(const label_statement_t *statement)
937 fprintf(out, "%s:\n", statement->label->base.symbol->string);
939 print_statement(statement->statement);
943 * Print an if statement.
945 * @param statement the if statement
947 static void print_if_statement(const if_statement_t *statement)
950 print_expression(statement->condition);
952 print_statement(statement->true_statement);
954 if(statement->false_statement != NULL) {
957 print_statement(statement->false_statement);
962 * Print a switch statement.
964 * @param statement the switch statement
966 static void print_switch_statement(const switch_statement_t *statement)
968 fputs("switch (", out);
969 print_expression(statement->expression);
971 print_statement(statement->body);
975 * Print a case label (including the default label).
977 * @param statement the case label statement
979 static void print_case_label(const case_label_statement_t *statement)
981 if(statement->expression == NULL) {
982 fputs("default:\n", out);
985 print_expression(statement->expression);
986 if (statement->end_range != NULL) {
988 print_expression(statement->end_range);
993 if(statement->statement != NULL) {
994 if (statement->statement->base.kind == STATEMENT_CASE_LABEL) {
998 print_statement(statement->statement);
1002 static void print_local_label(const local_label_statement_t *statement)
1004 fputs("__label__ ", out);
1007 entity_t *entity = statement->labels_begin;
1009 entity != statement->labels_end->base.next;
1010 entity = entity->base.next) {
1016 fputs(entity->base.symbol->string, out);
1021 static void print_typedef(const entity_t *entity)
1023 fputs("typedef ", out);
1024 print_type_ext(entity->typedefe.type, entity->base.symbol, NULL);
1029 * returns true if the entity is a compiler generated one and has no real
1030 * correspondenc in the source file
1032 static bool is_generated_entity(const entity_t *entity)
1034 if (entity->kind == ENTITY_TYPEDEF)
1035 return entity->typedefe.builtin;
1037 if (is_declaration(entity))
1038 return entity->declaration.implicit;
1044 * Print a declaration statement.
1046 * @param statement the statement
1048 static void print_declaration_statement(
1049 const declaration_statement_t *statement)
1052 entity_t *entity = statement->declarations_begin;
1054 entity != statement->declarations_end->base.next;
1055 entity = entity->base.next) {
1056 if (!is_declaration(entity) && entity->kind != ENTITY_TYPEDEF)
1058 if (is_generated_entity(entity))
1067 if (entity->kind == ENTITY_TYPEDEF) {
1068 print_typedef(entity);
1070 assert(is_declaration(entity));
1071 print_declaration(entity);
1079 * Print a while statement.
1081 * @param statement the statement
1083 static void print_while_statement(const while_statement_t *statement)
1085 fputs("while (", out);
1086 print_expression(statement->condition);
1088 print_statement(statement->body);
1092 * Print a do-while statement.
1094 * @param statement the statement
1096 static void print_do_while_statement(const do_while_statement_t *statement)
1099 print_statement(statement->body);
1101 fputs("while (", out);
1102 print_expression(statement->condition);
1107 * Print a for statement.
1109 * @param statement the statement
1111 static void print_for_statement(const for_statement_t *statement)
1113 fputs("for (", out);
1114 entity_t *entity = statement->scope.entities;
1115 while (entity != NULL && is_generated_entity(entity))
1116 entity = entity->base.next;
1118 if (entity != NULL) {
1119 assert(statement->initialisation == NULL);
1120 assert(is_declaration(entity));
1121 print_declaration(entity);
1122 if (entity->base.next != NULL) {
1123 panic("multiple declarations in for statement not supported yet");
1127 if(statement->initialisation) {
1128 print_expression(statement->initialisation);
1132 if(statement->condition != NULL) {
1133 print_expression(statement->condition);
1136 if(statement->step != NULL) {
1137 print_expression(statement->step);
1140 print_statement(statement->body);
1144 * Print assembler arguments.
1146 * @param arguments the arguments
1148 static void print_asm_arguments(asm_argument_t *arguments)
1150 asm_argument_t *argument = arguments;
1151 for( ; argument != NULL; argument = argument->next) {
1152 if(argument != arguments)
1155 if(argument->symbol) {
1156 fprintf(out, "[%s] ", argument->symbol->string);
1158 print_quoted_string(&argument->constraints, '"', 1);
1160 print_expression(argument->expression);
1166 * Print assembler clobbers.
1168 * @param clobbers the clobbers
1170 static void print_asm_clobbers(asm_clobber_t *clobbers)
1172 asm_clobber_t *clobber = clobbers;
1173 for( ; clobber != NULL; clobber = clobber->next) {
1174 if(clobber != clobbers)
1177 print_quoted_string(&clobber->clobber, '"', 1);
1182 * Print an assembler statement.
1184 * @param statement the statement
1186 static void print_asm_statement(const asm_statement_t *statement)
1189 if(statement->is_volatile) {
1190 fputs("volatile ", out);
1193 print_quoted_string(&statement->asm_text, '"', 1);
1194 if (statement->outputs == NULL &&
1195 statement->inputs == NULL &&
1196 statement->clobbers == NULL)
1197 goto end_of_print_asm_statement;
1200 print_asm_arguments(statement->outputs);
1201 if (statement->inputs == NULL && statement->clobbers == NULL)
1202 goto end_of_print_asm_statement;
1205 print_asm_arguments(statement->inputs);
1206 if (statement->clobbers == NULL)
1207 goto end_of_print_asm_statement;
1210 print_asm_clobbers(statement->clobbers);
1212 end_of_print_asm_statement:
1217 * Print a microsoft __try statement.
1219 * @param statement the statement
1221 static void print_ms_try_statement(const ms_try_statement_t *statement)
1223 fputs("__try ", out);
1224 print_statement(statement->try_statement);
1226 if(statement->except_expression != NULL) {
1227 fputs("__except(", out);
1228 print_expression(statement->except_expression);
1231 fputs("__finally ", out);
1233 print_statement(statement->final_statement);
1237 * Print a microsoft __leave statement.
1239 * @param statement the statement
1241 static void print_leave_statement(const leave_statement_t *statement)
1244 fputs("__leave;\n", out);
1248 * Print a statement.
1250 * @param statement the statement
1252 void print_statement(const statement_t *statement)
1254 switch (statement->kind) {
1255 case STATEMENT_EMPTY:
1258 case STATEMENT_COMPOUND:
1259 print_compound_statement(&statement->compound);
1261 case STATEMENT_RETURN:
1262 print_return_statement(&statement->returns);
1264 case STATEMENT_EXPRESSION:
1265 print_expression_statement(&statement->expression);
1267 case STATEMENT_LABEL:
1268 print_label_statement(&statement->label);
1270 case STATEMENT_LOCAL_LABEL:
1271 print_local_label(&statement->local_label);
1273 case STATEMENT_GOTO:
1274 print_goto_statement(&statement->gotos);
1276 case STATEMENT_CONTINUE:
1277 fputs("continue;\n", out);
1279 case STATEMENT_BREAK:
1280 fputs("break;\n", out);
1283 print_if_statement(&statement->ifs);
1285 case STATEMENT_SWITCH:
1286 print_switch_statement(&statement->switchs);
1288 case STATEMENT_CASE_LABEL:
1289 print_case_label(&statement->case_label);
1291 case STATEMENT_DECLARATION:
1292 print_declaration_statement(&statement->declaration);
1294 case STATEMENT_WHILE:
1295 print_while_statement(&statement->whiles);
1297 case STATEMENT_DO_WHILE:
1298 print_do_while_statement(&statement->do_while);
1301 print_for_statement(&statement->fors);
1304 print_asm_statement(&statement->asms);
1306 case STATEMENT_MS_TRY:
1307 print_ms_try_statement(&statement->ms_try);
1309 case STATEMENT_LEAVE:
1310 print_leave_statement(&statement->leave);
1312 case STATEMENT_INVALID:
1313 fputs("$invalid statement$\n", out);
1319 * Print a storage class.
1321 * @param storage_class the storage class
1323 static void print_storage_class(storage_class_tag_t storage_class)
1325 switch (storage_class) {
1326 case STORAGE_CLASS_NONE:
1328 case STORAGE_CLASS_TYPEDEF: fputs("typedef ", out); break;
1329 case STORAGE_CLASS_EXTERN: fputs("extern ", out); break;
1330 case STORAGE_CLASS_STATIC: fputs("static ", out); break;
1331 case STORAGE_CLASS_AUTO: fputs("auto ", out); break;
1332 case STORAGE_CLASS_REGISTER: fputs("register ", out); break;
1333 case STORAGE_CLASS_THREAD: fputs("__thread", out); break;
1334 case STORAGE_CLASS_THREAD_EXTERN: fputs("extern __thread", out); break;
1335 case STORAGE_CLASS_THREAD_STATIC: fputs("static __thread", out); break;
1340 * Print an initializer.
1342 * @param initializer the initializer
1344 void print_initializer(const initializer_t *initializer)
1346 if(initializer == NULL) {
1351 switch (initializer->kind) {
1352 case INITIALIZER_VALUE: {
1353 const initializer_value_t *value = &initializer->value;
1354 print_expression(value->value);
1357 case INITIALIZER_LIST: {
1358 assert(initializer->kind == INITIALIZER_LIST);
1360 const initializer_list_t *list = &initializer->list;
1362 for(size_t i = 0 ; i < list->len; ++i) {
1363 const initializer_t *sub_init = list->initializers[i];
1364 print_initializer(list->initializers[i]);
1365 if(i < list->len-1) {
1366 if(sub_init == NULL || sub_init->kind != INITIALIZER_DESIGNATOR)
1373 case INITIALIZER_STRING:
1374 print_quoted_string(&initializer->string.string, '"', 1);
1376 case INITIALIZER_WIDE_STRING:
1377 print_quoted_wide_string(&initializer->wide_string.string, '"', 1);
1379 case INITIALIZER_DESIGNATOR:
1380 print_designator(initializer->designator.designator);
1385 panic("invalid initializer kind found");
1389 * Print microsoft extended declaration modifiers.
1391 static void print_ms_modifiers(const declaration_t *declaration)
1393 if((c_mode & _MS) == 0)
1396 decl_modifiers_t modifiers = declaration->modifiers;
1398 bool ds_shown = false;
1399 const char *next = "(";
1401 if (declaration->base.kind == ENTITY_VARIABLE) {
1402 variable_t *variable = (variable_t*) declaration;
1403 if (variable->alignment != 0
1404 || variable->get_property_sym != NULL
1405 || variable->put_property_sym != NULL) {
1407 fputs("__declspec", out);
1411 if(variable->alignment != 0) {
1412 fputs(next, out); next = ", "; fprintf(out, "align(%u)", variable->alignment);
1414 if(variable->get_property_sym != NULL
1415 || variable->put_property_sym != NULL) {
1417 fputs(next, out); next = ", "; fputs("property(", out);
1418 if(variable->get_property_sym != NULL) {
1419 fprintf(out, "get=%s", variable->get_property_sym->string);
1422 if(variable->put_property_sym != NULL)
1423 fprintf(out, "%sput=%s", comma, variable->put_property_sym->string);
1429 /* DM_FORCEINLINE handled outside. */
1430 if ((modifiers & ~DM_FORCEINLINE) != 0) {
1432 fputs("__declspec", out);
1435 if(modifiers & DM_DLLIMPORT) {
1436 fputs(next, out); next = ", "; fputs("dllimport", out);
1438 if(modifiers & DM_DLLEXPORT) {
1439 fputs(next, out); next = ", "; fputs("dllexport", out);
1441 if(modifiers & DM_THREAD) {
1442 fputs(next, out); next = ", "; fputs("thread", out);
1444 if(modifiers & DM_NAKED) {
1445 fputs(next, out); next = ", "; fputs("naked", out);
1447 if(modifiers & DM_THREAD) {
1448 fputs(next, out); next = ", "; fputs("thread", out);
1450 if(modifiers & DM_SELECTANY) {
1451 fputs(next, out); next = ", "; fputs("selectany", out);
1453 if(modifiers & DM_NOTHROW) {
1454 fputs(next, out); next = ", "; fputs("nothrow", out);
1456 if(modifiers & DM_NORETURN) {
1457 fputs(next, out); next = ", "; fputs("noreturn", out);
1459 if(modifiers & DM_NOINLINE) {
1460 fputs(next, out); next = ", "; fputs("noinline", out);
1462 if (modifiers & DM_DEPRECATED) {
1463 fputs(next, out); next = ", "; fputs("deprecated", out);
1464 if(declaration->deprecated_string != NULL)
1465 fprintf(out, "(\"%s\")",
1466 declaration->deprecated_string);
1468 if(modifiers & DM_RESTRICT) {
1469 fputs(next, out); next = ", "; fputs("restrict", out);
1471 if(modifiers & DM_NOALIAS) {
1472 fputs(next, out); next = ", "; fputs("noalias", out);
1481 * Print a variable or function declaration
1483 void print_declaration(const entity_t *entity)
1485 assert(is_declaration(entity));
1486 const declaration_t *declaration = &entity->declaration;
1488 print_storage_class((storage_class_tag_t) declaration->declared_storage_class);
1489 if (entity->kind == ENTITY_FUNCTION) {
1490 function_t *function = (function_t*) declaration;
1491 if (function->is_inline) {
1492 if (declaration->modifiers & DM_FORCEINLINE) {
1493 fputs("__forceinline ", out);
1494 } else if (declaration->modifiers & DM_MICROSOFT_INLINE) {
1495 fputs("__inline ", out);
1497 fputs("inline ", out);
1501 print_ms_modifiers(declaration);
1502 if (entity->kind == ENTITY_FUNCTION) {
1503 print_type_ext(entity->declaration.type, entity->base.symbol,
1504 &entity->function.parameters);
1506 if (entity->function.statement != NULL) {
1509 print_statement(entity->function.statement);
1513 print_type_ext(declaration->type, declaration->base.symbol, NULL);
1515 if (entity->kind == ENTITY_VARIABLE
1516 && entity->variable.initializer != NULL) {
1518 print_initializer(entity->variable.initializer);
1525 * Prints an expression.
1527 * @param expression the expression
1529 void print_expression(const expression_t *expression)
1531 print_expression_prec(expression, 2 * PREC_BOTTOM);
1535 * Print a declaration.
1537 * @param declaration the declaration
1539 void print_entity(const entity_t *entity)
1541 if (entity->base.namespc != NAMESPACE_NORMAL && entity->base.symbol == NULL)
1544 switch ((entity_kind_tag_t) entity->kind) {
1545 case ENTITY_VARIABLE:
1546 case ENTITY_FUNCTION:
1547 case ENTITY_COMPOUND_MEMBER:
1548 print_declaration(entity);
1550 case ENTITY_TYPEDEF:
1551 print_typedef(entity);
1554 fputs("struct ", out);
1555 fputs(entity->base.symbol->string, out);
1556 if (entity->structe.complete) {
1558 print_compound_definition(&entity->structe);
1563 fputs("union ", out);
1564 fputs(entity->base.symbol->string, out);
1565 if (entity->unione.complete) {
1567 print_compound_definition(&entity->unione);
1572 fputs("enum ", out);
1573 fputs(entity->base.symbol->string, out);
1575 print_enum_definition(&entity->enume);
1579 case ENTITY_ENUM_VALUE:
1580 case ENTITY_LOCAL_LABEL:
1581 panic("print_entity used on unexpected entity type");
1582 case ENTITY_INVALID:
1585 panic("Invalid entity type encountered");
1589 * Print the AST of a translation unit.
1591 * @param unit the translation unit
1593 void print_ast(const translation_unit_t *unit)
1597 entity_t *entity = unit->scope.entities;
1598 for ( ; entity != NULL; entity = entity->base.next) {
1599 if (entity->kind == ENTITY_ENUM_VALUE)
1601 if (entity->base.namespc != NAMESPACE_NORMAL
1602 && entity->base.symbol == NULL)
1604 if (is_generated_entity(entity))
1608 print_entity(entity);
1613 bool is_constant_initializer(const initializer_t *initializer)
1615 switch (initializer->kind) {
1616 case INITIALIZER_STRING:
1617 case INITIALIZER_WIDE_STRING:
1618 case INITIALIZER_DESIGNATOR:
1621 case INITIALIZER_VALUE:
1622 return is_constant_expression(initializer->value.value);
1624 case INITIALIZER_LIST:
1625 for(size_t i = 0; i < initializer->list.len; ++i) {
1626 initializer_t *sub_initializer = initializer->list.initializers[i];
1627 if(!is_constant_initializer(sub_initializer))
1632 panic("invalid initializer kind found");
1635 static bool is_object_with_linker_constant_address(const expression_t *expression)
1637 switch (expression->kind) {
1638 case EXPR_UNARY_DEREFERENCE:
1639 return is_address_constant(expression->unary.value);
1642 type_t *base_type = skip_typeref(expression->select.compound->base.type);
1643 if(is_type_pointer(base_type)) {
1645 return is_address_constant(expression->select.compound);
1647 return is_object_with_linker_constant_address(expression->select.compound);
1651 case EXPR_ARRAY_ACCESS:
1652 return is_constant_expression(expression->array_access.index)
1653 && is_address_constant(expression->array_access.array_ref);
1655 case EXPR_REFERENCE: {
1656 entity_t *entity = expression->reference.entity;
1657 if (is_declaration(entity)) {
1658 switch ((storage_class_tag_t) entity->declaration.storage_class) {
1659 case STORAGE_CLASS_NONE:
1660 case STORAGE_CLASS_EXTERN:
1661 case STORAGE_CLASS_STATIC:
1664 case STORAGE_CLASS_REGISTER:
1665 case STORAGE_CLASS_TYPEDEF:
1666 case STORAGE_CLASS_AUTO:
1667 case STORAGE_CLASS_THREAD:
1668 case STORAGE_CLASS_THREAD_EXTERN:
1669 case STORAGE_CLASS_THREAD_STATIC:
1681 bool is_address_constant(const expression_t *expression)
1683 switch (expression->kind) {
1684 case EXPR_UNARY_TAKE_ADDRESS:
1685 return is_object_with_linker_constant_address(expression->unary.value);
1687 case EXPR_UNARY_DEREFERENCE: {
1689 = revert_automatic_type_conversion(expression->unary.value);
1690 /* dereferencing a function is a NOP */
1691 if(is_type_function(real_type)) {
1692 return is_address_constant(expression->unary.value);
1698 case EXPR_UNARY_CAST: {
1699 type_t *dest = skip_typeref(expression->base.type);
1700 if (!is_type_pointer(dest) && (
1701 dest->kind != TYPE_ATOMIC ||
1702 !(get_atomic_type_flags(dest->atomic.akind) & ATOMIC_TYPE_FLAG_INTEGER) ||
1703 (get_atomic_type_size(dest->atomic.akind) < get_atomic_type_size(get_intptr_kind())
1707 return (is_constant_expression(expression->unary.value)
1708 || is_address_constant(expression->unary.value));
1711 case EXPR_BINARY_ADD:
1712 case EXPR_BINARY_SUB: {
1713 expression_t *left = expression->binary.left;
1714 expression_t *right = expression->binary.right;
1716 if(is_type_pointer(skip_typeref(left->base.type))) {
1717 return is_address_constant(left) && is_constant_expression(right);
1718 } else if(is_type_pointer(skip_typeref(right->base.type))) {
1719 return is_constant_expression(left) && is_address_constant(right);
1725 case EXPR_REFERENCE: {
1726 entity_t *entity = expression->reference.entity;
1727 if (!is_declaration(entity))
1730 type_t *type = skip_typeref(entity->declaration.type);
1731 if(is_type_function(type))
1733 if(is_type_array(type)) {
1734 return is_object_with_linker_constant_address(expression);
1736 /* Prevent stray errors */
1737 if (!is_type_valid(type))
1742 case EXPR_ARRAY_ACCESS: {
1743 type_t *const type =
1744 skip_typeref(revert_automatic_type_conversion(expression));
1746 is_type_array(type) &&
1747 is_constant_expression(expression->array_access.index) &&
1748 is_address_constant(expression->array_access.array_ref);
1756 static bool is_builtin_const_call(const expression_t *expression)
1758 expression_t *function = expression->call.function;
1759 if (function->kind != EXPR_BUILTIN_SYMBOL) {
1763 symbol_t *symbol = function->builtin_symbol.symbol;
1765 switch (symbol->ID) {
1766 case T___builtin_huge_val:
1767 case T___builtin_inf:
1768 case T___builtin_inff:
1769 case T___builtin_infl:
1770 case T___builtin_nan:
1771 case T___builtin_nanf:
1772 case T___builtin_nanl:
1779 static bool is_constant_pointer(const expression_t *expression)
1781 if (is_constant_expression(expression))
1784 switch (expression->kind) {
1785 case EXPR_UNARY_CAST:
1786 return is_constant_pointer(expression->unary.value);
1792 static bool is_object_with_constant_address(const expression_t *expression)
1794 switch (expression->kind) {
1796 expression_t *compound = expression->select.compound;
1797 type_t *compound_type = compound->base.type;
1798 compound_type = skip_typeref(compound_type);
1799 if(is_type_pointer(compound_type)) {
1800 return is_constant_pointer(compound);
1802 return is_object_with_constant_address(compound);
1806 case EXPR_ARRAY_ACCESS: {
1807 array_access_expression_t const* const array_access =
1808 &expression->array_access;
1810 is_constant_expression(array_access->index) && (
1811 is_object_with_constant_address(array_access->array_ref) ||
1812 is_constant_pointer(array_access->array_ref)
1816 case EXPR_UNARY_DEREFERENCE:
1817 return is_constant_pointer(expression->unary.value);
1823 bool is_constant_expression(const expression_t *expression)
1825 switch (expression->kind) {
1828 case EXPR_CHARACTER_CONSTANT:
1829 case EXPR_WIDE_CHARACTER_CONSTANT:
1830 case EXPR_STRING_LITERAL:
1831 case EXPR_WIDE_STRING_LITERAL:
1832 case EXPR_CLASSIFY_TYPE:
1836 case EXPR_BUILTIN_CONSTANT_P:
1837 case EXPR_LABEL_ADDRESS:
1838 case EXPR_REFERENCE_ENUM_VALUE:
1842 type_t *type = expression->typeprop.type;
1844 type = expression->typeprop.tp_expression->base.type;
1846 type = skip_typeref(type);
1847 if (is_type_array(type) && type->array.is_vla)
1852 case EXPR_BUILTIN_SYMBOL:
1853 case EXPR_BUILTIN_PREFETCH:
1857 case EXPR_STATEMENT:
1858 case EXPR_REFERENCE:
1859 case EXPR_UNARY_POSTFIX_INCREMENT:
1860 case EXPR_UNARY_POSTFIX_DECREMENT:
1861 case EXPR_UNARY_PREFIX_INCREMENT:
1862 case EXPR_UNARY_PREFIX_DECREMENT:
1863 case EXPR_UNARY_ASSUME: /* has VOID type */
1864 case EXPR_UNARY_DEREFERENCE:
1865 case EXPR_UNARY_DELETE:
1866 case EXPR_UNARY_DELETE_ARRAY:
1867 case EXPR_UNARY_THROW:
1868 case EXPR_BINARY_ASSIGN:
1869 case EXPR_BINARY_MUL_ASSIGN:
1870 case EXPR_BINARY_DIV_ASSIGN:
1871 case EXPR_BINARY_MOD_ASSIGN:
1872 case EXPR_BINARY_ADD_ASSIGN:
1873 case EXPR_BINARY_SUB_ASSIGN:
1874 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
1875 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
1876 case EXPR_BINARY_BITWISE_AND_ASSIGN:
1877 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
1878 case EXPR_BINARY_BITWISE_OR_ASSIGN:
1879 case EXPR_BINARY_COMMA:
1880 case EXPR_ARRAY_ACCESS:
1883 case EXPR_UNARY_TAKE_ADDRESS:
1884 return is_object_with_constant_address(expression->unary.value);
1887 return is_builtin_const_call(expression);
1889 case EXPR_UNARY_NEGATE:
1890 case EXPR_UNARY_PLUS:
1891 case EXPR_UNARY_BITWISE_NEGATE:
1892 case EXPR_UNARY_NOT:
1893 return is_constant_expression(expression->unary.value);
1895 case EXPR_UNARY_CAST:
1896 case EXPR_UNARY_CAST_IMPLICIT:
1897 return is_type_arithmetic(skip_typeref(expression->base.type))
1898 && is_constant_expression(expression->unary.value);
1900 case EXPR_BINARY_ADD:
1901 case EXPR_BINARY_SUB:
1902 case EXPR_BINARY_MUL:
1903 case EXPR_BINARY_DIV:
1904 case EXPR_BINARY_MOD:
1905 case EXPR_BINARY_EQUAL:
1906 case EXPR_BINARY_NOTEQUAL:
1907 case EXPR_BINARY_LESS:
1908 case EXPR_BINARY_LESSEQUAL:
1909 case EXPR_BINARY_GREATER:
1910 case EXPR_BINARY_GREATEREQUAL:
1911 case EXPR_BINARY_BITWISE_AND:
1912 case EXPR_BINARY_BITWISE_OR:
1913 case EXPR_BINARY_BITWISE_XOR:
1914 case EXPR_BINARY_LOGICAL_AND:
1915 case EXPR_BINARY_LOGICAL_OR:
1916 case EXPR_BINARY_SHIFTLEFT:
1917 case EXPR_BINARY_SHIFTRIGHT:
1918 case EXPR_BINARY_BUILTIN_EXPECT:
1919 case EXPR_BINARY_ISGREATER:
1920 case EXPR_BINARY_ISGREATEREQUAL:
1921 case EXPR_BINARY_ISLESS:
1922 case EXPR_BINARY_ISLESSEQUAL:
1923 case EXPR_BINARY_ISLESSGREATER:
1924 case EXPR_BINARY_ISUNORDERED:
1925 return is_constant_expression(expression->binary.left)
1926 && is_constant_expression(expression->binary.right);
1928 case EXPR_COMPOUND_LITERAL:
1929 return is_constant_initializer(expression->compound_literal.initializer);
1931 case EXPR_CONDITIONAL: {
1932 expression_t *condition = expression->conditional.condition;
1933 if(!is_constant_expression(condition))
1936 long val = fold_constant(condition);
1938 return is_constant_expression(expression->conditional.true_expression);
1940 return is_constant_expression(expression->conditional.false_expression);
1949 panic("invalid expression found (is constant expression)");
1953 * Initialize the AST construction.
1957 obstack_init(&ast_obstack);
1965 obstack_free(&ast_obstack, NULL);
1969 * Set the output stream for the AST printer.
1971 * @param stream the output stream
1973 void ast_set_output(FILE *stream)
1976 type_set_output(stream);
1980 * Allocate an AST object of the given size.
1982 * @param size the size of the object to allocate
1984 * @return A new allocated object in the AST memeory space.
1986 void *(allocate_ast)(size_t size)
1988 return _allocate_ast(size);