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_ISGREATER] = PREC_PRIMARY,
172 [EXPR_BINARY_ISGREATEREQUAL] = PREC_PRIMARY,
173 [EXPR_BINARY_ISLESS] = PREC_PRIMARY,
174 [EXPR_BINARY_ISLESSEQUAL] = PREC_PRIMARY,
175 [EXPR_BINARY_ISLESSGREATER] = PREC_PRIMARY,
176 [EXPR_BINARY_ISUNORDERED] = PREC_PRIMARY
178 assert((unsigned)kind < (sizeof(prec)/sizeof(prec[0])));
179 unsigned res = prec[kind];
181 assert(res != PREC_BOTTOM);
186 * Print a constant expression.
188 * @param cnst the constant expression
190 static void print_const(const const_expression_t *cnst)
192 if (cnst->base.type == NULL)
195 const type_t *const type = skip_typeref(cnst->base.type);
197 if (is_type_atomic(type, ATOMIC_TYPE_BOOL)) {
198 fputs(cnst->v.int_value ? "true" : "false", out);
199 } else if (is_type_integer(type)) {
200 fprintf(out, "%lld", cnst->v.int_value);
201 } else if (is_type_float(type)) {
202 long double const val = cnst->v.float_value;
204 /* ARG, no way to print long double */
205 fprintf(out, "%.20g", (double)val);
207 fprintf(out, "%.20Lg", val);
209 if (isfinite(val) && truncl(val) == val)
212 panic("unknown constant");
216 switch (type->atomic.akind) {
217 case ATOMIC_TYPE_UINT: suffix = "U"; break;
218 case ATOMIC_TYPE_LONG: suffix = "L"; break;
219 case ATOMIC_TYPE_ULONG: suffix = "UL"; break;
220 case ATOMIC_TYPE_LONGLONG: suffix = "LL"; break;
221 case ATOMIC_TYPE_ULONGLONG: suffix = "ULL"; break;
222 case ATOMIC_TYPE_FLOAT: suffix = "F"; break;
223 case ATOMIC_TYPE_LONG_DOUBLE: suffix = "L"; break;
231 * Print a quoted string constant.
233 * @param string the string constant
234 * @param border the border char
235 * @param skip number of chars to skip at the end
237 static void print_quoted_string(const string_t *const string, char border, int skip)
240 const char *end = string->begin + string->size - skip;
241 for (const char *c = string->begin; c != end; ++c) {
246 case '\\': fputs("\\\\", out); break;
247 case '\a': fputs("\\a", out); break;
248 case '\b': fputs("\\b", out); break;
249 case '\f': fputs("\\f", out); break;
250 case '\n': fputs("\\n", out); break;
251 case '\r': fputs("\\r", out); break;
252 case '\t': fputs("\\t", out); break;
253 case '\v': fputs("\\v", out); break;
254 case '\?': fputs("\\?", out); break;
256 if (c_mode & _GNUC) {
257 fputs("\\e", out); break;
262 fprintf(out, "\\%03o", (unsigned)(unsigned char)*c);
273 * Prints a wide string literal expression.
275 * @param wstr the wide string literal expression
276 * @param border the border char
277 * @param skip number of chars to skip at the end
279 static void print_quoted_wide_string(const wide_string_t *const wstr,
280 char border, int skip)
284 const wchar_rep_t *end = wstr->begin + wstr->size - skip;
285 for (const wchar_rep_t *c = wstr->begin; c != end; ++c) {
287 case L'\"': fputs("\\\"", out); break;
288 case L'\\': fputs("\\\\", out); break;
289 case L'\a': fputs("\\a", out); break;
290 case L'\b': fputs("\\b", out); break;
291 case L'\f': fputs("\\f", out); break;
292 case L'\n': fputs("\\n", out); break;
293 case L'\r': fputs("\\r", out); break;
294 case L'\t': fputs("\\t", out); break;
295 case L'\v': fputs("\\v", out); break;
296 case L'\?': fputs("\\?", out); break;
298 if (c_mode & _GNUC) {
299 fputs("\\e", out); break;
303 const unsigned tc = *c;
306 fprintf(out, "\\%03o", (char)*c);
310 } else if (tc < 0x800) {
311 fputc(0xC0 | (tc >> 6), out);
312 fputc(0x80 | (tc & 0x3F), out);
313 } else if (tc < 0x10000) {
314 fputc(0xE0 | ( tc >> 12), out);
315 fputc(0x80 | ((tc >> 6) & 0x3F), out);
316 fputc(0x80 | ( tc & 0x3F), out);
318 fputc(0xF0 | ( tc >> 18), out);
319 fputc(0x80 | ((tc >> 12) & 0x3F), out);
320 fputc(0x80 | ((tc >> 6) & 0x3F), out);
321 fputc(0x80 | ( tc & 0x3F), out);
330 * Print a constant character expression.
332 * @param cnst the constant character expression
334 static void print_character_constant(const const_expression_t *cnst)
336 print_quoted_string(&cnst->v.character, '\'', 0);
339 static void print_wide_character_constant(const const_expression_t *cnst)
341 print_quoted_wide_string(&cnst->v.wide_character, '\'', 0);
345 * Prints a string literal expression.
347 * @param string_literal the string literal expression
349 static void print_string_literal(
350 const string_literal_expression_t *string_literal)
352 print_quoted_string(&string_literal->value, '"', 1);
356 * Prints a predefined symbol.
358 static void print_funcname(const funcname_expression_t *funcname)
361 switch (funcname->kind) {
362 case FUNCNAME_FUNCTION: s = (c_mode & _C99) ? "__func__" : "__FUNCTION__"; break;
363 case FUNCNAME_PRETTY_FUNCTION: s = "__PRETTY_FUNCTION__"; break;
364 case FUNCNAME_FUNCSIG: s = "__FUNCSIG__"; break;
365 case FUNCNAME_FUNCDNAME: s = "__FUNCDNAME__"; break;
370 static void print_wide_string_literal(
371 const wide_string_literal_expression_t *const wstr)
373 print_quoted_wide_string(&wstr->value, '"', 1);
376 static void print_compound_literal(
377 const compound_literal_expression_t *expression)
380 print_type(expression->type);
382 print_initializer(expression->initializer);
385 static void print_assignment_expression(const expression_t *const expr)
387 print_expression_prec(expr, PREC_ASSIGNMENT);
391 * Prints a call expression.
393 * @param call the call expression
395 static void print_call_expression(const call_expression_t *call)
397 unsigned prec = get_expression_precedence(call->base.kind);
398 print_expression_prec(call->function, prec);
400 call_argument_t *argument = call->arguments;
402 while (argument != NULL) {
408 print_assignment_expression(argument->expression);
410 argument = argument->next;
416 * Prints a binary expression.
418 * @param binexpr the binary expression
420 static void print_binary_expression(const binary_expression_t *binexpr)
422 unsigned prec = get_expression_precedence(binexpr->base.kind);
423 int r2l = right_to_left(prec);
425 print_expression_prec(binexpr->left, prec + r2l);
427 switch (binexpr->base.kind) {
428 case EXPR_BINARY_COMMA: op = ", "; break;
429 case EXPR_BINARY_ASSIGN: op = " = "; break;
430 case EXPR_BINARY_ADD: op = " + "; break;
431 case EXPR_BINARY_SUB: op = " - "; break;
432 case EXPR_BINARY_MUL: op = " * "; break;
433 case EXPR_BINARY_MOD: op = " % "; break;
434 case EXPR_BINARY_DIV: op = " / "; break;
435 case EXPR_BINARY_BITWISE_OR: op = " | "; break;
436 case EXPR_BINARY_BITWISE_AND: op = " & "; break;
437 case EXPR_BINARY_BITWISE_XOR: op = " ^ "; break;
438 case EXPR_BINARY_LOGICAL_OR: op = " || "; break;
439 case EXPR_BINARY_LOGICAL_AND: op = " && "; break;
440 case EXPR_BINARY_NOTEQUAL: op = " != "; break;
441 case EXPR_BINARY_EQUAL: op = " == "; break;
442 case EXPR_BINARY_LESS: op = " < "; break;
443 case EXPR_BINARY_LESSEQUAL: op = " <= "; break;
444 case EXPR_BINARY_GREATER: op = " > "; break;
445 case EXPR_BINARY_GREATEREQUAL: op = " >= "; break;
446 case EXPR_BINARY_SHIFTLEFT: op = " << "; break;
447 case EXPR_BINARY_SHIFTRIGHT: op = " >> "; break;
449 case EXPR_BINARY_ADD_ASSIGN: op = " += "; break;
450 case EXPR_BINARY_SUB_ASSIGN: op = " -= "; break;
451 case EXPR_BINARY_MUL_ASSIGN: op = " *= "; break;
452 case EXPR_BINARY_MOD_ASSIGN: op = " %= "; break;
453 case EXPR_BINARY_DIV_ASSIGN: op = " /= "; break;
454 case EXPR_BINARY_BITWISE_OR_ASSIGN: op = " |= "; break;
455 case EXPR_BINARY_BITWISE_AND_ASSIGN: op = " &= "; break;
456 case EXPR_BINARY_BITWISE_XOR_ASSIGN: op = " ^= "; break;
457 case EXPR_BINARY_SHIFTLEFT_ASSIGN: op = " <<= "; break;
458 case EXPR_BINARY_SHIFTRIGHT_ASSIGN: op = " >>= "; break;
459 default: panic("invalid binexpression found");
462 print_expression_prec(binexpr->right, prec + 1 - r2l);
466 * Prints an unary expression.
468 * @param unexpr the unary expression
470 static void print_unary_expression(const unary_expression_t *unexpr)
472 unsigned prec = get_expression_precedence(unexpr->base.kind);
473 switch (unexpr->base.kind) {
474 case EXPR_UNARY_NEGATE: fputc('-', out); break;
475 case EXPR_UNARY_PLUS: fputc('+', out); break;
476 case EXPR_UNARY_NOT: fputc('!', out); break;
477 case EXPR_UNARY_BITWISE_NEGATE: fputc('~', out); break;
478 case EXPR_UNARY_PREFIX_INCREMENT: fputs("++", out); break;
479 case EXPR_UNARY_PREFIX_DECREMENT: fputs("--", out); break;
480 case EXPR_UNARY_DEREFERENCE: fputc('*', out); break;
481 case EXPR_UNARY_TAKE_ADDRESS: fputc('&', out); break;
482 case EXPR_UNARY_DELETE: fputs("delete ", out); break;
483 case EXPR_UNARY_DELETE_ARRAY: fputs("delete [] ", out); break;
485 case EXPR_UNARY_POSTFIX_INCREMENT:
486 print_expression_prec(unexpr->value, prec);
489 case EXPR_UNARY_POSTFIX_DECREMENT:
490 print_expression_prec(unexpr->value, prec);
493 case EXPR_UNARY_CAST_IMPLICIT:
494 case EXPR_UNARY_CAST:
496 print_type(unexpr->base.type);
499 case EXPR_UNARY_ASSUME:
500 fputs("__assume(", out);
501 print_assignment_expression(unexpr->value);
505 case EXPR_UNARY_THROW:
506 if (unexpr->value == NULL) {
510 fputs("throw ", out);
514 panic("invalid unary expression found");
516 print_expression_prec(unexpr->value, prec);
520 * Prints a reference expression.
522 * @param ref the reference expression
524 static void print_reference_expression(const reference_expression_t *ref)
526 fputs(ref->entity->base.symbol->string, out);
530 * Prints a label address expression.
532 * @param ref the reference expression
534 static void print_label_address_expression(const label_address_expression_t *le)
536 fprintf(out, "&&%s", le->label->base.symbol->string);
540 * Prints an array expression.
542 * @param expression the array expression
544 static void print_array_expression(const array_access_expression_t *expression)
546 unsigned prec = get_expression_precedence(expression->base.kind);
547 if (!expression->flipped) {
548 print_expression_prec(expression->array_ref, prec);
550 print_expression(expression->index);
553 print_expression_prec(expression->index, prec);
555 print_expression(expression->array_ref);
561 * Prints a typeproperty expression (sizeof or __alignof__).
563 * @param expression the type property expression
565 static void print_typeprop_expression(const typeprop_expression_t *expression)
567 if (expression->base.kind == EXPR_SIZEOF) {
568 fputs("sizeof", out);
570 assert(expression->base.kind == EXPR_ALIGNOF);
571 fputs("__alignof__", out);
573 if (expression->tp_expression != NULL) {
574 /* always print the '()' here, sizeof x is right but unusual */
576 print_expression(expression->tp_expression);
580 print_type(expression->type);
586 * Prints an builtin symbol.
588 * @param expression the builtin symbol expression
590 static void print_builtin_symbol(const builtin_symbol_expression_t *expression)
592 fputs(expression->symbol->string, out);
596 * Prints a builtin constant expression.
598 * @param expression the builtin constant expression
600 static void print_builtin_constant(const builtin_constant_expression_t *expression)
602 fputs("__builtin_constant_p(", out);
603 print_assignment_expression(expression->value);
608 * Prints a builtin prefetch expression.
610 * @param expression the builtin prefetch expression
612 static void print_builtin_prefetch(const builtin_prefetch_expression_t *expression)
614 fputs("__builtin_prefetch(", out);
615 print_assignment_expression(expression->adr);
616 if (expression->rw) {
618 print_assignment_expression(expression->rw);
620 if (expression->locality) {
622 print_assignment_expression(expression->locality);
628 * Prints a conditional expression.
630 * @param expression the conditional expression
632 static void print_conditional(const conditional_expression_t *expression)
634 print_expression_prec(expression->condition, PREC_LOGICAL_OR);
636 if (expression->true_expression != NULL) {
637 print_expression_prec(expression->true_expression, PREC_EXPRESSION);
642 precedence_t prec = c_mode & _CXX ? PREC_ASSIGNMENT : PREC_CONDITIONAL;
643 print_expression_prec(expression->false_expression, prec);
647 * Prints a va_start expression.
649 * @param expression the va_start expression
651 static void print_va_start(const va_start_expression_t *const expression)
653 fputs("__builtin_va_start(", out);
654 print_assignment_expression(expression->ap);
656 fputs(expression->parameter->base.base.symbol->string, out);
661 * Prints a va_arg expression.
663 * @param expression the va_arg expression
665 static void print_va_arg(const va_arg_expression_t *expression)
667 fputs("__builtin_va_arg(", out);
668 print_assignment_expression(expression->ap);
670 print_type(expression->base.type);
675 * Prints a select expression (. or ->).
677 * @param expression the select expression
679 static void print_select(const select_expression_t *expression)
681 unsigned prec = get_expression_precedence(expression->base.kind);
682 print_expression_prec(expression->compound, prec);
683 if (is_type_pointer(skip_typeref(expression->compound->base.type))) {
688 fputs(expression->compound_entry->base.symbol->string, out);
692 * Prints a type classify expression.
694 * @param expr the type classify expression
696 static void print_classify_type_expression(
697 const classify_type_expression_t *const expr)
699 fputs("__builtin_classify_type(", out);
700 print_assignment_expression(expr->type_expression);
705 * Prints a designator.
707 * @param designator the designator
709 static void print_designator(const designator_t *designator)
711 for ( ; designator != NULL; designator = designator->next) {
712 if (designator->symbol == NULL) {
714 print_expression(designator->array_index);
718 fputs(designator->symbol->string, out);
724 * Prints an offsetof expression.
726 * @param expression the offset expression
728 static void print_offsetof_expression(const offsetof_expression_t *expression)
730 fputs("__builtin_offsetof", out);
732 print_type(expression->type);
734 print_designator(expression->designator);
739 * Prints a statement expression.
741 * @param expression the statement expression
743 static void print_statement_expression(const statement_expression_t *expression)
746 print_statement(expression->statement);
751 * Prints an expression with parenthesis if needed.
753 * @param expression the expression to print
754 * @param top_prec the precedence of the user of this expression.
756 static void print_expression_prec(const expression_t *expression, unsigned top_prec)
758 if (expression->kind == EXPR_UNARY_CAST_IMPLICIT && !print_implicit_casts) {
759 expression = expression->unary.value;
763 expression->base.parenthesized ||
764 (print_parenthesis && top_prec != PREC_BOTTOM) ||
765 top_prec > get_expression_precedence(expression->base.kind);
769 switch (expression->kind) {
772 fputs("$invalid expression$", out);
774 case EXPR_CHARACTER_CONSTANT:
775 print_character_constant(&expression->conste);
777 case EXPR_WIDE_CHARACTER_CONSTANT:
778 print_wide_character_constant(&expression->conste);
781 print_const(&expression->conste);
784 print_funcname(&expression->funcname);
786 case EXPR_STRING_LITERAL:
787 print_string_literal(&expression->string);
789 case EXPR_WIDE_STRING_LITERAL:
790 print_wide_string_literal(&expression->wide_string);
792 case EXPR_COMPOUND_LITERAL:
793 print_compound_literal(&expression->compound_literal);
796 print_call_expression(&expression->call);
799 print_binary_expression(&expression->binary);
802 case EXPR_REFERENCE_ENUM_VALUE:
803 print_reference_expression(&expression->reference);
805 case EXPR_ARRAY_ACCESS:
806 print_array_expression(&expression->array_access);
808 case EXPR_LABEL_ADDRESS:
809 print_label_address_expression(&expression->label_address);
812 print_unary_expression(&expression->unary);
816 print_typeprop_expression(&expression->typeprop);
818 case EXPR_BUILTIN_SYMBOL:
819 print_builtin_symbol(&expression->builtin_symbol);
821 case EXPR_BUILTIN_CONSTANT_P:
822 print_builtin_constant(&expression->builtin_constant);
824 case EXPR_BUILTIN_PREFETCH:
825 print_builtin_prefetch(&expression->builtin_prefetch);
827 case EXPR_CONDITIONAL:
828 print_conditional(&expression->conditional);
831 print_va_start(&expression->va_starte);
834 print_va_arg(&expression->va_arge);
837 print_select(&expression->select);
839 case EXPR_CLASSIFY_TYPE:
840 print_classify_type_expression(&expression->classify_type);
843 print_offsetof_expression(&expression->offsetofe);
846 print_statement_expression(&expression->statement);
851 fprintf(out, "some expression of type %d", (int)expression->kind);
859 * Print an compound statement.
861 * @param block the compound statement
863 static void print_compound_statement(const compound_statement_t *block)
868 statement_t *statement = block->statements;
869 while (statement != NULL) {
870 if (statement->base.kind == STATEMENT_CASE_LABEL)
872 if (statement->kind != STATEMENT_LABEL)
874 print_statement(statement);
876 statement = statement->base.next;
884 * Print a return statement.
886 * @param statement the return statement
888 static void print_return_statement(const return_statement_t *statement)
890 expression_t const *const val = statement->value;
892 fputs("return ", out);
893 print_expression(val);
896 fputs("return;\n", out);
901 * Print an expression statement.
903 * @param statement the expression statement
905 static void print_expression_statement(const expression_statement_t *statement)
907 print_expression(statement->expression);
912 * Print a goto statement.
914 * @param statement the goto statement
916 static void print_goto_statement(const goto_statement_t *statement)
919 if (statement->expression != NULL) {
921 print_expression(statement->expression);
923 fputs(statement->label->base.symbol->string, out);
929 * Print a label statement.
931 * @param statement the label statement
933 static void print_label_statement(const label_statement_t *statement)
935 fprintf(out, "%s:\n", statement->label->base.symbol->string);
937 print_statement(statement->statement);
941 * Print an if statement.
943 * @param statement the if statement
945 static void print_if_statement(const if_statement_t *statement)
948 print_expression(statement->condition);
950 print_statement(statement->true_statement);
952 if (statement->false_statement != NULL) {
955 print_statement(statement->false_statement);
960 * Print a switch statement.
962 * @param statement the switch statement
964 static void print_switch_statement(const switch_statement_t *statement)
966 fputs("switch (", out);
967 print_expression(statement->expression);
969 print_statement(statement->body);
973 * Print a case label (including the default label).
975 * @param statement the case label statement
977 static void print_case_label(const case_label_statement_t *statement)
979 if (statement->expression == NULL) {
980 fputs("default:\n", out);
983 print_expression(statement->expression);
984 if (statement->end_range != NULL) {
986 print_expression(statement->end_range);
991 if (statement->statement != NULL) {
992 if (statement->statement->base.kind == STATEMENT_CASE_LABEL) {
996 print_statement(statement->statement);
1000 static void print_local_label(const local_label_statement_t *statement)
1002 fputs("__label__ ", out);
1005 entity_t *entity = statement->labels_begin;
1007 entity != statement->labels_end->base.next;
1008 entity = entity->base.next) {
1014 fputs(entity->base.symbol->string, out);
1019 static void print_typedef(const entity_t *entity)
1021 fputs("typedef ", out);
1022 print_type_ext(entity->typedefe.type, entity->base.symbol, NULL);
1027 * returns true if the entity is a compiler generated one and has no real
1028 * correspondenc in the source file
1030 static bool is_generated_entity(const entity_t *entity)
1032 if (entity->kind == ENTITY_TYPEDEF)
1033 return entity->typedefe.builtin;
1035 if (is_declaration(entity))
1036 return entity->declaration.implicit;
1042 * Print a declaration statement.
1044 * @param statement the statement
1046 static void print_declaration_statement(
1047 const declaration_statement_t *statement)
1050 entity_t *entity = statement->declarations_begin;
1051 if (entity == NULL) {
1052 fputs("/* empty declaration statement */\n", out);
1056 entity_t *const end = statement->declarations_end->base.next;
1057 for (; entity != end; entity = entity->base.next) {
1058 if (!is_declaration(entity) && entity->kind != ENTITY_TYPEDEF)
1060 if (is_generated_entity(entity))
1069 if (entity->kind == ENTITY_TYPEDEF) {
1070 print_typedef(entity);
1072 assert(is_declaration(entity));
1073 print_declaration(entity);
1081 * Print a while statement.
1083 * @param statement the statement
1085 static void print_while_statement(const while_statement_t *statement)
1087 fputs("while (", out);
1088 print_expression(statement->condition);
1090 print_statement(statement->body);
1094 * Print a do-while statement.
1096 * @param statement the statement
1098 static void print_do_while_statement(const do_while_statement_t *statement)
1101 print_statement(statement->body);
1103 fputs("while (", out);
1104 print_expression(statement->condition);
1109 * Print a for statement.
1111 * @param statement the statement
1113 static void print_for_statement(const for_statement_t *statement)
1115 fputs("for (", out);
1116 entity_t *entity = statement->scope.entities;
1117 while (entity != NULL && is_generated_entity(entity))
1118 entity = entity->base.next;
1120 if (entity != NULL) {
1121 assert(statement->initialisation == NULL);
1122 assert(is_declaration(entity));
1123 print_declaration(entity);
1124 if (entity->base.next != NULL) {
1125 panic("multiple declarations in for statement not supported yet");
1128 if (statement->initialisation) {
1129 print_expression(statement->initialisation);
1133 if (statement->condition != NULL) {
1135 print_expression(statement->condition);
1138 if (statement->step != NULL) {
1140 print_expression(statement->step);
1143 print_statement(statement->body);
1147 * Print assembler arguments.
1149 * @param arguments the arguments
1151 static void print_asm_arguments(asm_argument_t *arguments)
1153 asm_argument_t *argument = arguments;
1154 for (; argument != NULL; argument = argument->next) {
1155 if (argument != arguments)
1158 if (argument->symbol) {
1159 fprintf(out, "[%s] ", argument->symbol->string);
1161 print_quoted_string(&argument->constraints, '"', 1);
1163 print_expression(argument->expression);
1169 * Print assembler clobbers.
1171 * @param clobbers the clobbers
1173 static void print_asm_clobbers(asm_clobber_t *clobbers)
1175 asm_clobber_t *clobber = clobbers;
1176 for (; clobber != NULL; clobber = clobber->next) {
1177 if (clobber != clobbers)
1180 print_quoted_string(&clobber->clobber, '"', 1);
1185 * Print an assembler statement.
1187 * @param statement the statement
1189 static void print_asm_statement(const asm_statement_t *statement)
1192 if (statement->is_volatile) {
1193 fputs("volatile ", out);
1196 print_quoted_string(&statement->asm_text, '"', 1);
1197 if (statement->outputs == NULL &&
1198 statement->inputs == NULL &&
1199 statement->clobbers == NULL)
1200 goto end_of_print_asm_statement;
1203 print_asm_arguments(statement->outputs);
1204 if (statement->inputs == NULL && statement->clobbers == NULL)
1205 goto end_of_print_asm_statement;
1208 print_asm_arguments(statement->inputs);
1209 if (statement->clobbers == NULL)
1210 goto end_of_print_asm_statement;
1213 print_asm_clobbers(statement->clobbers);
1215 end_of_print_asm_statement:
1220 * Print a microsoft __try statement.
1222 * @param statement the statement
1224 static void print_ms_try_statement(const ms_try_statement_t *statement)
1226 fputs("__try ", out);
1227 print_statement(statement->try_statement);
1229 if (statement->except_expression != NULL) {
1230 fputs("__except(", out);
1231 print_expression(statement->except_expression);
1234 fputs("__finally ", out);
1236 print_statement(statement->final_statement);
1240 * Print a microsoft __leave statement.
1242 * @param statement the statement
1244 static void print_leave_statement(const leave_statement_t *statement)
1247 fputs("__leave;\n", out);
1251 * Print a statement.
1253 * @param statement the statement
1255 void print_statement(const statement_t *statement)
1257 switch (statement->kind) {
1258 case STATEMENT_EMPTY:
1261 case STATEMENT_COMPOUND:
1262 print_compound_statement(&statement->compound);
1264 case STATEMENT_RETURN:
1265 print_return_statement(&statement->returns);
1267 case STATEMENT_EXPRESSION:
1268 print_expression_statement(&statement->expression);
1270 case STATEMENT_LABEL:
1271 print_label_statement(&statement->label);
1273 case STATEMENT_LOCAL_LABEL:
1274 print_local_label(&statement->local_label);
1276 case STATEMENT_GOTO:
1277 print_goto_statement(&statement->gotos);
1279 case STATEMENT_CONTINUE:
1280 fputs("continue;\n", out);
1282 case STATEMENT_BREAK:
1283 fputs("break;\n", out);
1286 print_if_statement(&statement->ifs);
1288 case STATEMENT_SWITCH:
1289 print_switch_statement(&statement->switchs);
1291 case STATEMENT_CASE_LABEL:
1292 print_case_label(&statement->case_label);
1294 case STATEMENT_DECLARATION:
1295 print_declaration_statement(&statement->declaration);
1297 case STATEMENT_WHILE:
1298 print_while_statement(&statement->whiles);
1300 case STATEMENT_DO_WHILE:
1301 print_do_while_statement(&statement->do_while);
1304 print_for_statement(&statement->fors);
1307 print_asm_statement(&statement->asms);
1309 case STATEMENT_MS_TRY:
1310 print_ms_try_statement(&statement->ms_try);
1312 case STATEMENT_LEAVE:
1313 print_leave_statement(&statement->leave);
1315 case STATEMENT_INVALID:
1316 fputs("$invalid statement$\n", out);
1322 * Print a storage class.
1324 * @param storage_class the storage class
1326 static void print_storage_class(storage_class_tag_t storage_class)
1329 switch (storage_class) {
1330 case STORAGE_CLASS_NONE: return;
1331 case STORAGE_CLASS_TYPEDEF: text = "typedef "; break;
1332 case STORAGE_CLASS_EXTERN: text = "extern "; break;
1333 case STORAGE_CLASS_STATIC: text = "static "; break;
1334 case STORAGE_CLASS_AUTO: text = "auto "; break;
1335 case STORAGE_CLASS_REGISTER: text = "register "; break;
1341 * Print an initializer.
1343 * @param initializer the initializer
1345 void print_initializer(const initializer_t *initializer)
1347 if (initializer == NULL) {
1352 switch (initializer->kind) {
1353 case INITIALIZER_VALUE: {
1354 const initializer_value_t *value = &initializer->value;
1355 print_assignment_expression(value->value);
1358 case INITIALIZER_LIST: {
1359 assert(initializer->kind == INITIALIZER_LIST);
1361 const initializer_list_t *list = &initializer->list;
1363 for (size_t i = 0 ; i < list->len; ++i) {
1364 const initializer_t *sub_init = list->initializers[i];
1365 print_initializer(list->initializers[i]);
1366 if (i < list->len-1) {
1367 if (sub_init == NULL || sub_init->kind != INITIALIZER_DESIGNATOR)
1374 case INITIALIZER_STRING:
1375 print_quoted_string(&initializer->string.string, '"', 1);
1377 case INITIALIZER_WIDE_STRING:
1378 print_quoted_wide_string(&initializer->wide_string.string, '"', 1);
1380 case INITIALIZER_DESIGNATOR:
1381 print_designator(initializer->designator.designator);
1386 panic("invalid initializer kind found");
1390 * Print microsoft extended declaration modifiers.
1392 static void print_ms_modifiers(const declaration_t *declaration)
1394 if ((c_mode & _MS) == 0)
1397 decl_modifiers_t modifiers = declaration->modifiers;
1399 bool ds_shown = false;
1400 const char *next = "(";
1402 if (declaration->base.kind == ENTITY_VARIABLE) {
1403 variable_t *variable = (variable_t*)declaration;
1404 if (variable->alignment != 0
1405 || variable->get_property_sym != NULL
1406 || variable->put_property_sym != NULL) {
1408 fputs("__declspec", out);
1412 if (variable->alignment != 0) {
1413 fputs(next, out); next = ", "; fprintf(out, "align(%u)", variable->alignment);
1415 if (variable->get_property_sym != NULL
1416 || variable->put_property_sym != NULL) {
1418 fputs(next, out); next = ", "; fputs("property(", out);
1419 if (variable->get_property_sym != NULL) {
1420 fprintf(out, "get=%s", variable->get_property_sym->string);
1423 if (variable->put_property_sym != NULL)
1424 fprintf(out, "%sput=%s", comma, variable->put_property_sym->string);
1430 /* DM_FORCEINLINE handled outside. */
1431 if ((modifiers & ~DM_FORCEINLINE) != 0) {
1433 fputs("__declspec", out);
1436 if (modifiers & DM_DLLIMPORT) {
1437 fputs(next, out); next = ", "; fputs("dllimport", out);
1439 if (modifiers & DM_DLLEXPORT) {
1440 fputs(next, out); next = ", "; fputs("dllexport", out);
1442 if (modifiers & DM_THREAD) {
1443 fputs(next, out); next = ", "; fputs("thread", out);
1445 if (modifiers & DM_NAKED) {
1446 fputs(next, out); next = ", "; fputs("naked", out);
1448 if (modifiers & DM_THREAD) {
1449 fputs(next, out); next = ", "; fputs("thread", out);
1451 if (modifiers & DM_SELECTANY) {
1452 fputs(next, out); next = ", "; fputs("selectany", out);
1454 if (modifiers & DM_NOTHROW) {
1455 fputs(next, out); next = ", "; fputs("nothrow", out);
1457 if (modifiers & DM_NORETURN) {
1458 fputs(next, out); next = ", "; fputs("noreturn", out);
1460 if (modifiers & DM_NOINLINE) {
1461 fputs(next, out); next = ", "; fputs("noinline", out);
1463 if (modifiers & DM_DEPRECATED) {
1464 fputs(next, out); next = ", "; fputs("deprecated", out);
1465 if (declaration->deprecated_string != NULL)
1466 fprintf(out, "(\"%s\")",
1467 declaration->deprecated_string);
1469 if (modifiers & DM_RESTRICT) {
1470 fputs(next, out); next = ", "; fputs("restrict", out);
1472 if (modifiers & DM_NOALIAS) {
1473 fputs(next, out); next = ", "; fputs("noalias", out);
1481 static void print_scope(const scope_t *scope)
1483 const entity_t *entity = scope->entities;
1484 for ( ; entity != NULL; entity = entity->base.next) {
1486 print_entity(entity);
1491 static void print_namespace(const namespace_t *namespace)
1493 fputs("namespace ", out);
1494 if (namespace->base.symbol != NULL) {
1495 fputs(namespace->base.symbol->string, out);
1502 print_scope(&namespace->members);
1510 * Print a variable or function declaration
1512 void print_declaration(const entity_t *entity)
1514 assert(is_declaration(entity));
1515 const declaration_t *declaration = &entity->declaration;
1517 print_storage_class((storage_class_tag_t)declaration->declared_storage_class);
1518 if (entity->kind == ENTITY_FUNCTION) {
1519 function_t *function = (function_t*)declaration;
1520 if (function->is_inline) {
1521 if (declaration->modifiers & DM_FORCEINLINE) {
1522 fputs("__forceinline ", out);
1523 } else if (declaration->modifiers & DM_MICROSOFT_INLINE) {
1524 fputs("__inline ", out);
1526 fputs("inline ", out);
1530 print_ms_modifiers(declaration);
1531 switch (entity->kind) {
1532 case ENTITY_FUNCTION:
1533 print_type_ext(entity->declaration.type, entity->base.symbol,
1534 &entity->function.parameters);
1536 if (entity->function.statement != NULL) {
1539 print_statement(entity->function.statement);
1544 case ENTITY_VARIABLE:
1545 if (entity->variable.thread_local)
1546 fputs("__thread ", out);
1547 print_type_ext(declaration->type, declaration->base.symbol, NULL);
1548 if (entity->variable.initializer != NULL) {
1550 print_initializer(entity->variable.initializer);
1555 print_type_ext(declaration->type, declaration->base.symbol, NULL);
1562 * Prints an expression.
1564 * @param expression the expression
1566 void print_expression(const expression_t *expression)
1568 print_expression_prec(expression, PREC_BOTTOM);
1572 * Print a declaration.
1574 * @param declaration the declaration
1576 void print_entity(const entity_t *entity)
1578 if (entity->base.namespc != NAMESPACE_NORMAL && entity->base.symbol == NULL)
1581 switch ((entity_kind_tag_t)entity->kind) {
1582 case ENTITY_VARIABLE:
1583 case ENTITY_PARAMETER:
1584 case ENTITY_COMPOUND_MEMBER:
1585 print_declaration(entity);
1587 case ENTITY_FUNCTION:
1588 print_declaration(entity);
1590 case ENTITY_TYPEDEF:
1591 print_typedef(entity);
1594 fputs("struct ", out);
1595 fputs(entity->base.symbol->string, out);
1596 if (entity->structe.complete) {
1598 print_compound_definition(&entity->structe);
1603 fputs("union ", out);
1604 fputs(entity->base.symbol->string, out);
1605 if (entity->unione.complete) {
1607 print_compound_definition(&entity->unione);
1612 fputs("enum ", out);
1613 fputs(entity->base.symbol->string, out);
1615 print_enum_definition(&entity->enume);
1618 case ENTITY_NAMESPACE:
1619 print_namespace(&entity->namespacee);
1622 case ENTITY_ENUM_VALUE:
1623 case ENTITY_LOCAL_LABEL:
1624 panic("print_entity used on unexpected entity type");
1625 case ENTITY_INVALID:
1628 panic("Invalid entity type encountered");
1632 * Print the AST of a translation unit.
1634 * @param unit the translation unit
1636 void print_ast(const translation_unit_t *unit)
1640 entity_t *entity = unit->scope.entities;
1641 for ( ; entity != NULL; entity = entity->base.next) {
1642 if (entity->kind == ENTITY_ENUM_VALUE)
1644 if (entity->base.namespc != NAMESPACE_NORMAL
1645 && entity->base.symbol == NULL)
1647 if (is_generated_entity(entity))
1651 print_entity(entity);
1656 bool is_constant_initializer(const initializer_t *initializer)
1658 switch (initializer->kind) {
1659 case INITIALIZER_STRING:
1660 case INITIALIZER_WIDE_STRING:
1661 case INITIALIZER_DESIGNATOR:
1664 case INITIALIZER_VALUE:
1665 return is_constant_expression(initializer->value.value);
1667 case INITIALIZER_LIST:
1668 for (size_t i = 0; i < initializer->list.len; ++i) {
1669 initializer_t *sub_initializer = initializer->list.initializers[i];
1670 if (!is_constant_initializer(sub_initializer))
1675 panic("invalid initializer kind found");
1678 static bool is_object_with_linker_constant_address(const expression_t *expression)
1680 switch (expression->kind) {
1681 case EXPR_UNARY_DEREFERENCE:
1682 return is_address_constant(expression->unary.value);
1685 type_t *base_type = skip_typeref(expression->select.compound->base.type);
1686 if (is_type_pointer(base_type)) {
1688 return is_address_constant(expression->select.compound);
1690 return is_object_with_linker_constant_address(expression->select.compound);
1694 case EXPR_ARRAY_ACCESS:
1695 return is_constant_expression(expression->array_access.index)
1696 && is_address_constant(expression->array_access.array_ref);
1698 case EXPR_REFERENCE: {
1699 entity_t *entity = expression->reference.entity;
1700 if (is_declaration(entity)) {
1701 switch ((storage_class_tag_t)entity->declaration.storage_class) {
1702 case STORAGE_CLASS_NONE:
1703 case STORAGE_CLASS_EXTERN:
1704 case STORAGE_CLASS_STATIC:
1706 entity->kind != ENTITY_VARIABLE ||
1707 !entity->variable.thread_local;
1709 case STORAGE_CLASS_REGISTER:
1710 case STORAGE_CLASS_TYPEDEF:
1711 case STORAGE_CLASS_AUTO:
1723 bool is_address_constant(const expression_t *expression)
1725 switch (expression->kind) {
1726 case EXPR_UNARY_TAKE_ADDRESS:
1727 return is_object_with_linker_constant_address(expression->unary.value);
1729 case EXPR_UNARY_DEREFERENCE: {
1731 = revert_automatic_type_conversion(expression->unary.value);
1732 /* dereferencing a function is a NOP */
1733 if (is_type_function(real_type)) {
1734 return is_address_constant(expression->unary.value);
1739 case EXPR_UNARY_CAST: {
1740 type_t *dest = skip_typeref(expression->base.type);
1741 if (!is_type_pointer(dest) && (
1742 dest->kind != TYPE_ATOMIC ||
1743 !(get_atomic_type_flags(dest->atomic.akind) & ATOMIC_TYPE_FLAG_INTEGER) ||
1744 get_atomic_type_size(dest->atomic.akind) < get_atomic_type_size(get_intptr_kind())
1748 return (is_constant_expression(expression->unary.value)
1749 || is_address_constant(expression->unary.value));
1752 case EXPR_BINARY_ADD:
1753 case EXPR_BINARY_SUB: {
1754 expression_t *left = expression->binary.left;
1755 expression_t *right = expression->binary.right;
1757 if (is_type_pointer(skip_typeref(left->base.type))) {
1758 return is_address_constant(left) && is_constant_expression(right);
1759 } else if (is_type_pointer(skip_typeref(right->base.type))) {
1760 return is_constant_expression(left) && is_address_constant(right);
1766 case EXPR_REFERENCE: {
1767 entity_t *entity = expression->reference.entity;
1768 if (!is_declaration(entity))
1771 type_t *type = skip_typeref(entity->declaration.type);
1772 if (is_type_function(type))
1774 if (is_type_array(type)) {
1775 return is_object_with_linker_constant_address(expression);
1777 /* Prevent stray errors */
1778 if (!is_type_valid(type))
1783 case EXPR_ARRAY_ACCESS: {
1784 type_t *const type =
1785 skip_typeref(revert_automatic_type_conversion(expression));
1787 is_type_array(type) &&
1788 is_constant_expression(expression->array_access.index) &&
1789 is_address_constant(expression->array_access.array_ref);
1797 static bool is_builtin_const_call(const expression_t *expression)
1799 expression_t *function = expression->call.function;
1800 if (function->kind != EXPR_BUILTIN_SYMBOL) {
1804 symbol_t *symbol = function->builtin_symbol.symbol;
1806 switch (symbol->ID) {
1807 case T___builtin_huge_val:
1808 case T___builtin_inf:
1809 case T___builtin_inff:
1810 case T___builtin_infl:
1811 case T___builtin_nan:
1812 case T___builtin_nanf:
1813 case T___builtin_nanl:
1820 static bool is_constant_pointer(const expression_t *expression)
1822 if (is_constant_expression(expression))
1825 switch (expression->kind) {
1826 case EXPR_UNARY_CAST:
1827 return is_constant_pointer(expression->unary.value);
1833 static bool is_object_with_constant_address(const expression_t *expression)
1835 switch (expression->kind) {
1837 expression_t *compound = expression->select.compound;
1838 type_t *compound_type = compound->base.type;
1839 compound_type = skip_typeref(compound_type);
1840 if (is_type_pointer(compound_type)) {
1841 return is_constant_pointer(compound);
1843 return is_object_with_constant_address(compound);
1847 case EXPR_ARRAY_ACCESS: {
1848 array_access_expression_t const* const array_access =
1849 &expression->array_access;
1851 is_constant_expression(array_access->index) && (
1852 is_object_with_constant_address(array_access->array_ref) ||
1853 is_constant_pointer(array_access->array_ref)
1857 case EXPR_UNARY_DEREFERENCE:
1858 return is_constant_pointer(expression->unary.value);
1864 bool is_constant_expression(const expression_t *expression)
1866 switch (expression->kind) {
1869 case EXPR_CHARACTER_CONSTANT:
1870 case EXPR_WIDE_CHARACTER_CONSTANT:
1871 case EXPR_STRING_LITERAL:
1872 case EXPR_WIDE_STRING_LITERAL:
1873 case EXPR_CLASSIFY_TYPE:
1877 case EXPR_BUILTIN_CONSTANT_P:
1878 case EXPR_LABEL_ADDRESS:
1879 case EXPR_REFERENCE_ENUM_VALUE:
1883 type_t *type = expression->typeprop.type;
1885 type = expression->typeprop.tp_expression->base.type;
1887 type = skip_typeref(type);
1888 if (is_type_array(type) && type->array.is_vla)
1893 case EXPR_BUILTIN_SYMBOL:
1894 case EXPR_BUILTIN_PREFETCH:
1898 case EXPR_STATEMENT:
1899 case EXPR_REFERENCE:
1900 case EXPR_UNARY_POSTFIX_INCREMENT:
1901 case EXPR_UNARY_POSTFIX_DECREMENT:
1902 case EXPR_UNARY_PREFIX_INCREMENT:
1903 case EXPR_UNARY_PREFIX_DECREMENT:
1904 case EXPR_UNARY_ASSUME: /* has VOID type */
1905 case EXPR_UNARY_DEREFERENCE:
1906 case EXPR_UNARY_DELETE:
1907 case EXPR_UNARY_DELETE_ARRAY:
1908 case EXPR_UNARY_THROW:
1909 case EXPR_BINARY_ASSIGN:
1910 case EXPR_BINARY_MUL_ASSIGN:
1911 case EXPR_BINARY_DIV_ASSIGN:
1912 case EXPR_BINARY_MOD_ASSIGN:
1913 case EXPR_BINARY_ADD_ASSIGN:
1914 case EXPR_BINARY_SUB_ASSIGN:
1915 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
1916 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
1917 case EXPR_BINARY_BITWISE_AND_ASSIGN:
1918 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
1919 case EXPR_BINARY_BITWISE_OR_ASSIGN:
1920 case EXPR_BINARY_COMMA:
1921 case EXPR_ARRAY_ACCESS:
1924 case EXPR_UNARY_TAKE_ADDRESS:
1925 return is_object_with_constant_address(expression->unary.value);
1928 return is_builtin_const_call(expression);
1930 case EXPR_UNARY_NEGATE:
1931 case EXPR_UNARY_PLUS:
1932 case EXPR_UNARY_BITWISE_NEGATE:
1933 case EXPR_UNARY_NOT:
1934 return is_constant_expression(expression->unary.value);
1936 case EXPR_UNARY_CAST:
1937 case EXPR_UNARY_CAST_IMPLICIT:
1938 return is_type_arithmetic(skip_typeref(expression->base.type))
1939 && is_constant_expression(expression->unary.value);
1941 case EXPR_BINARY_ADD:
1942 case EXPR_BINARY_SUB:
1943 case EXPR_BINARY_MUL:
1944 case EXPR_BINARY_DIV:
1945 case EXPR_BINARY_MOD:
1946 case EXPR_BINARY_EQUAL:
1947 case EXPR_BINARY_NOTEQUAL:
1948 case EXPR_BINARY_LESS:
1949 case EXPR_BINARY_LESSEQUAL:
1950 case EXPR_BINARY_GREATER:
1951 case EXPR_BINARY_GREATEREQUAL:
1952 case EXPR_BINARY_BITWISE_AND:
1953 case EXPR_BINARY_BITWISE_OR:
1954 case EXPR_BINARY_BITWISE_XOR:
1955 case EXPR_BINARY_LOGICAL_AND:
1956 case EXPR_BINARY_LOGICAL_OR:
1957 case EXPR_BINARY_SHIFTLEFT:
1958 case EXPR_BINARY_SHIFTRIGHT:
1959 case EXPR_BINARY_ISGREATER:
1960 case EXPR_BINARY_ISGREATEREQUAL:
1961 case EXPR_BINARY_ISLESS:
1962 case EXPR_BINARY_ISLESSEQUAL:
1963 case EXPR_BINARY_ISLESSGREATER:
1964 case EXPR_BINARY_ISUNORDERED:
1965 return is_constant_expression(expression->binary.left)
1966 && is_constant_expression(expression->binary.right);
1968 case EXPR_COMPOUND_LITERAL:
1969 return is_constant_initializer(expression->compound_literal.initializer);
1971 case EXPR_CONDITIONAL: {
1972 expression_t *condition = expression->conditional.condition;
1973 if (!is_constant_expression(condition))
1976 long val = fold_constant(condition);
1978 return is_constant_expression(expression->conditional.true_expression);
1980 return is_constant_expression(expression->conditional.false_expression);
1989 panic("invalid expression found (is constant expression)");
1993 * Initialize the AST construction.
1997 obstack_init(&ast_obstack);
2005 obstack_free(&ast_obstack, NULL);
2009 * Set the output stream for the AST printer.
2011 * @param stream the output stream
2013 void ast_set_output(FILE *stream)
2016 type_set_output(stream);
2020 * Allocate an AST object of the given size.
2022 * @param size the size of the object to allocate
2024 * @return A new allocated object in the AST memeory space.
2026 void *(allocate_ast)(size_t size)
2028 return _allocate_ast(size);