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 #if defined(__INTEL_COMPILER)
36 #elif defined(__CYGWIN__)
37 #include "win32/cygwin_math_ext.h"
42 #include "adt/error.h"
45 struct obstack ast_obstack;
50 /** If set, implicit casts are printed. */
51 bool print_implicit_casts = false;
53 /** If set parenthesis are printed to indicate operator precedence. */
54 bool print_parenthesis = false;
56 static void print_statement(const statement_t *statement);
57 static void print_expression_prec(const expression_t *expression, unsigned prec);
59 void change_indent(int delta)
65 void print_indent(void)
67 for (int i = 0; i < indent; ++i)
72 * Returns 1 if a given precedence level has right-to-left
73 * associativity, else 0.
75 * @param precedence the operator precedence
77 static int right_to_left(unsigned precedence)
81 case PREC_CONDITIONAL:
91 * Return the precedence of an expression given by its kind.
93 * @param kind the expression kind
95 static unsigned get_expression_precedence(expression_kind_t kind)
97 static const unsigned prec[] = {
98 [EXPR_UNKNOWN] = PREC_PRIMARY,
99 [EXPR_INVALID] = PREC_PRIMARY,
100 [EXPR_REFERENCE] = PREC_PRIMARY,
101 [EXPR_REFERENCE_ENUM_VALUE] = PREC_PRIMARY,
102 [EXPR_CHARACTER_CONSTANT] = PREC_PRIMARY,
103 [EXPR_WIDE_CHARACTER_CONSTANT] = PREC_PRIMARY,
104 [EXPR_CONST] = PREC_PRIMARY,
105 [EXPR_STRING_LITERAL] = PREC_PRIMARY,
106 [EXPR_WIDE_STRING_LITERAL] = PREC_PRIMARY,
107 [EXPR_COMPOUND_LITERAL] = PREC_UNARY,
108 [EXPR_CALL] = PREC_POSTFIX,
109 [EXPR_CONDITIONAL] = PREC_CONDITIONAL,
110 [EXPR_SELECT] = PREC_POSTFIX,
111 [EXPR_ARRAY_ACCESS] = PREC_POSTFIX,
112 [EXPR_SIZEOF] = PREC_UNARY,
113 [EXPR_CLASSIFY_TYPE] = PREC_UNARY,
114 [EXPR_ALIGNOF] = PREC_UNARY,
116 [EXPR_FUNCNAME] = PREC_PRIMARY,
117 [EXPR_BUILTIN_CONSTANT_P] = PREC_PRIMARY,
118 [EXPR_BUILTIN_TYPES_COMPATIBLE_P] = PREC_PRIMARY,
119 [EXPR_OFFSETOF] = PREC_PRIMARY,
120 [EXPR_VA_START] = PREC_PRIMARY,
121 [EXPR_VA_ARG] = PREC_PRIMARY,
122 [EXPR_STATEMENT] = PREC_PRIMARY,
123 [EXPR_LABEL_ADDRESS] = PREC_PRIMARY,
125 [EXPR_UNARY_NEGATE] = PREC_UNARY,
126 [EXPR_UNARY_PLUS] = PREC_UNARY,
127 [EXPR_UNARY_BITWISE_NEGATE] = PREC_UNARY,
128 [EXPR_UNARY_NOT] = PREC_UNARY,
129 [EXPR_UNARY_DEREFERENCE] = PREC_UNARY,
130 [EXPR_UNARY_TAKE_ADDRESS] = PREC_UNARY,
131 [EXPR_UNARY_POSTFIX_INCREMENT] = PREC_POSTFIX,
132 [EXPR_UNARY_POSTFIX_DECREMENT] = PREC_POSTFIX,
133 [EXPR_UNARY_PREFIX_INCREMENT] = PREC_UNARY,
134 [EXPR_UNARY_PREFIX_DECREMENT] = PREC_UNARY,
135 [EXPR_UNARY_CAST] = PREC_UNARY,
136 [EXPR_UNARY_CAST_IMPLICIT] = PREC_UNARY,
137 [EXPR_UNARY_ASSUME] = PREC_PRIMARY,
138 [EXPR_UNARY_DELETE] = PREC_UNARY,
139 [EXPR_UNARY_DELETE_ARRAY] = PREC_UNARY,
140 [EXPR_UNARY_THROW] = PREC_ASSIGNMENT,
142 [EXPR_BINARY_ADD] = PREC_ADDITIVE,
143 [EXPR_BINARY_SUB] = PREC_ADDITIVE,
144 [EXPR_BINARY_MUL] = PREC_MULTIPLICATIVE,
145 [EXPR_BINARY_DIV] = PREC_MULTIPLICATIVE,
146 [EXPR_BINARY_MOD] = PREC_MULTIPLICATIVE,
147 [EXPR_BINARY_EQUAL] = PREC_EQUALITY,
148 [EXPR_BINARY_NOTEQUAL] = PREC_EQUALITY,
149 [EXPR_BINARY_LESS] = PREC_RELATIONAL,
150 [EXPR_BINARY_LESSEQUAL] = PREC_RELATIONAL,
151 [EXPR_BINARY_GREATER] = PREC_RELATIONAL,
152 [EXPR_BINARY_GREATEREQUAL] = PREC_RELATIONAL,
153 [EXPR_BINARY_BITWISE_AND] = PREC_AND,
154 [EXPR_BINARY_BITWISE_OR] = PREC_OR,
155 [EXPR_BINARY_BITWISE_XOR] = PREC_XOR,
156 [EXPR_BINARY_LOGICAL_AND] = PREC_LOGICAL_AND,
157 [EXPR_BINARY_LOGICAL_OR] = PREC_LOGICAL_OR,
158 [EXPR_BINARY_SHIFTLEFT] = PREC_SHIFT,
159 [EXPR_BINARY_SHIFTRIGHT] = PREC_SHIFT,
160 [EXPR_BINARY_ASSIGN] = PREC_ASSIGNMENT,
161 [EXPR_BINARY_MUL_ASSIGN] = PREC_ASSIGNMENT,
162 [EXPR_BINARY_DIV_ASSIGN] = PREC_ASSIGNMENT,
163 [EXPR_BINARY_MOD_ASSIGN] = PREC_ASSIGNMENT,
164 [EXPR_BINARY_ADD_ASSIGN] = PREC_ASSIGNMENT,
165 [EXPR_BINARY_SUB_ASSIGN] = PREC_ASSIGNMENT,
166 [EXPR_BINARY_SHIFTLEFT_ASSIGN] = PREC_ASSIGNMENT,
167 [EXPR_BINARY_SHIFTRIGHT_ASSIGN] = PREC_ASSIGNMENT,
168 [EXPR_BINARY_BITWISE_AND_ASSIGN] = PREC_ASSIGNMENT,
169 [EXPR_BINARY_BITWISE_XOR_ASSIGN] = PREC_ASSIGNMENT,
170 [EXPR_BINARY_BITWISE_OR_ASSIGN] = PREC_ASSIGNMENT,
171 [EXPR_BINARY_COMMA] = PREC_EXPRESSION,
173 [EXPR_BINARY_ISGREATER] = PREC_PRIMARY,
174 [EXPR_BINARY_ISGREATEREQUAL] = PREC_PRIMARY,
175 [EXPR_BINARY_ISLESS] = PREC_PRIMARY,
176 [EXPR_BINARY_ISLESSEQUAL] = PREC_PRIMARY,
177 [EXPR_BINARY_ISLESSGREATER] = PREC_PRIMARY,
178 [EXPR_BINARY_ISUNORDERED] = PREC_PRIMARY
180 assert((size_t)kind < lengthof(prec));
181 unsigned res = prec[kind];
183 assert(res != PREC_BOTTOM);
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;
233 * Print a quoted string constant.
235 * @param string the string constant
236 * @param border the border char
237 * @param skip number of chars to skip at the end
239 static void print_quoted_string(const string_t *const string, char border, int skip)
242 const char *end = string->begin + string->size - skip;
243 for (const char *c = string->begin; c != end; ++c) {
244 unsigned char const tc = *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;
264 if (tc < 0x80 && !isprint(tc)) {
265 fprintf(out, "\\%03o", (unsigned)tc);
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;
311 fprintf(out, "\\%03o", tc);
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(const funcname_expression_t *funcname)
364 switch (funcname->kind) {
365 case FUNCNAME_FUNCTION: s = (c_mode & _C99) ? "__func__" : "__FUNCTION__"; break;
366 case FUNCNAME_PRETTY_FUNCTION: s = "__PRETTY_FUNCTION__"; break;
367 case FUNCNAME_FUNCSIG: s = "__FUNCSIG__"; break;
368 case FUNCNAME_FUNCDNAME: s = "__FUNCDNAME__"; break;
373 static void print_wide_string_literal(
374 const wide_string_literal_expression_t *const wstr)
376 print_quoted_wide_string(&wstr->value, '"', 1);
379 static void print_compound_literal(
380 const compound_literal_expression_t *expression)
383 print_type(expression->type);
385 print_initializer(expression->initializer);
388 static void print_assignment_expression(const expression_t *const expr)
390 print_expression_prec(expr, PREC_ASSIGNMENT);
394 * Prints a call expression.
396 * @param call the call expression
398 static void print_call_expression(const call_expression_t *call)
400 print_expression_prec(call->function, PREC_POSTFIX);
402 call_argument_t *argument = call->arguments;
404 while (argument != NULL) {
410 print_assignment_expression(argument->expression);
412 argument = argument->next;
418 * Prints a binary expression.
420 * @param binexpr the binary expression
422 static void print_binary_expression(const binary_expression_t *binexpr)
424 unsigned prec = get_expression_precedence(binexpr->base.kind);
425 int r2l = right_to_left(prec);
427 print_expression_prec(binexpr->left, prec + r2l);
429 switch (binexpr->base.kind) {
430 case EXPR_BINARY_COMMA: op = ", "; break;
431 case EXPR_BINARY_ASSIGN: op = " = "; break;
432 case EXPR_BINARY_ADD: op = " + "; break;
433 case EXPR_BINARY_SUB: op = " - "; break;
434 case EXPR_BINARY_MUL: op = " * "; break;
435 case EXPR_BINARY_MOD: op = " % "; break;
436 case EXPR_BINARY_DIV: op = " / "; break;
437 case EXPR_BINARY_BITWISE_OR: op = " | "; break;
438 case EXPR_BINARY_BITWISE_AND: op = " & "; break;
439 case EXPR_BINARY_BITWISE_XOR: op = " ^ "; break;
440 case EXPR_BINARY_LOGICAL_OR: op = " || "; break;
441 case EXPR_BINARY_LOGICAL_AND: op = " && "; break;
442 case EXPR_BINARY_NOTEQUAL: op = " != "; break;
443 case EXPR_BINARY_EQUAL: op = " == "; break;
444 case EXPR_BINARY_LESS: op = " < "; break;
445 case EXPR_BINARY_LESSEQUAL: op = " <= "; break;
446 case EXPR_BINARY_GREATER: op = " > "; break;
447 case EXPR_BINARY_GREATEREQUAL: op = " >= "; break;
448 case EXPR_BINARY_SHIFTLEFT: op = " << "; break;
449 case EXPR_BINARY_SHIFTRIGHT: op = " >> "; break;
451 case EXPR_BINARY_ADD_ASSIGN: op = " += "; break;
452 case EXPR_BINARY_SUB_ASSIGN: op = " -= "; break;
453 case EXPR_BINARY_MUL_ASSIGN: op = " *= "; break;
454 case EXPR_BINARY_MOD_ASSIGN: op = " %= "; break;
455 case EXPR_BINARY_DIV_ASSIGN: op = " /= "; break;
456 case EXPR_BINARY_BITWISE_OR_ASSIGN: op = " |= "; break;
457 case EXPR_BINARY_BITWISE_AND_ASSIGN: op = " &= "; break;
458 case EXPR_BINARY_BITWISE_XOR_ASSIGN: op = " ^= "; break;
459 case EXPR_BINARY_SHIFTLEFT_ASSIGN: op = " <<= "; break;
460 case EXPR_BINARY_SHIFTRIGHT_ASSIGN: op = " >>= "; break;
461 default: panic("invalid binexpression found");
464 print_expression_prec(binexpr->right, prec + 1 - r2l);
468 * Prints an unary expression.
470 * @param unexpr the unary expression
472 static void print_unary_expression(const unary_expression_t *unexpr)
474 unsigned prec = get_expression_precedence(unexpr->base.kind);
475 switch (unexpr->base.kind) {
476 case EXPR_UNARY_NEGATE: fputc('-', out); break;
477 case EXPR_UNARY_PLUS: fputc('+', out); break;
478 case EXPR_UNARY_NOT: fputc('!', out); break;
479 case EXPR_UNARY_BITWISE_NEGATE: fputc('~', out); break;
480 case EXPR_UNARY_PREFIX_INCREMENT: fputs("++", out); break;
481 case EXPR_UNARY_PREFIX_DECREMENT: fputs("--", out); break;
482 case EXPR_UNARY_DEREFERENCE: fputc('*', out); break;
483 case EXPR_UNARY_TAKE_ADDRESS: fputc('&', out); break;
484 case EXPR_UNARY_DELETE: fputs("delete ", out); break;
485 case EXPR_UNARY_DELETE_ARRAY: fputs("delete [] ", out); break;
487 case EXPR_UNARY_POSTFIX_INCREMENT:
488 print_expression_prec(unexpr->value, prec);
491 case EXPR_UNARY_POSTFIX_DECREMENT:
492 print_expression_prec(unexpr->value, prec);
495 case EXPR_UNARY_CAST_IMPLICIT:
496 case EXPR_UNARY_CAST:
498 print_type(unexpr->base.type);
501 case EXPR_UNARY_ASSUME:
502 fputs("__assume(", out);
503 print_assignment_expression(unexpr->value);
507 case EXPR_UNARY_THROW:
508 if (unexpr->value == NULL) {
512 fputs("throw ", out);
516 panic("invalid unary expression found");
518 print_expression_prec(unexpr->value, prec);
522 * Prints a reference expression.
524 * @param ref the reference expression
526 static void print_reference_expression(const reference_expression_t *ref)
528 fputs(ref->entity->base.symbol->string, out);
532 * Prints a label address expression.
534 * @param ref the reference expression
536 static void print_label_address_expression(const label_address_expression_t *le)
538 fprintf(out, "&&%s", le->label->base.symbol->string);
542 * Prints an array expression.
544 * @param expression the array expression
546 static void print_array_expression(const array_access_expression_t *expression)
548 if (!expression->flipped) {
549 print_expression_prec(expression->array_ref, PREC_POSTFIX);
551 print_expression(expression->index);
554 print_expression_prec(expression->index, PREC_POSTFIX);
556 print_expression(expression->array_ref);
562 * Prints a typeproperty expression (sizeof or __alignof__).
564 * @param expression the type property expression
566 static void print_typeprop_expression(const typeprop_expression_t *expression)
568 if (expression->base.kind == EXPR_SIZEOF) {
569 fputs("sizeof", out);
571 assert(expression->base.kind == EXPR_ALIGNOF);
572 fputs("__alignof__", out);
574 if (expression->tp_expression != NULL) {
575 /* PREC_TOP: always print the '()' here, sizeof x is right but unusual */
576 print_expression_prec(expression->tp_expression, PREC_TOP);
579 print_type(expression->type);
585 * Prints a builtin constant expression.
587 * @param expression the builtin constant expression
589 static void print_builtin_constant(const builtin_constant_expression_t *expression)
591 fputs("__builtin_constant_p(", out);
592 print_assignment_expression(expression->value);
597 * Prints a builtin types compatible expression.
599 * @param expression the builtin types compatible expression
601 static void print_builtin_types_compatible(
602 const builtin_types_compatible_expression_t *expression)
604 fputs("__builtin_types_compatible_p(", out);
605 print_type(expression->left);
607 print_type(expression->right);
612 * Prints a conditional expression.
614 * @param expression the conditional expression
616 static void print_conditional(const conditional_expression_t *expression)
618 print_expression_prec(expression->condition, PREC_LOGICAL_OR);
619 if (expression->true_expression != NULL) {
621 print_expression_prec(expression->true_expression, PREC_EXPRESSION);
626 precedence_t prec = c_mode & _CXX ? PREC_ASSIGNMENT : PREC_CONDITIONAL;
627 print_expression_prec(expression->false_expression, prec);
631 * Prints a va_start expression.
633 * @param expression the va_start expression
635 static void print_va_start(const va_start_expression_t *const expression)
637 fputs("__builtin_va_start(", out);
638 print_assignment_expression(expression->ap);
640 fputs(expression->parameter->base.base.symbol->string, out);
645 * Prints a va_arg expression.
647 * @param expression the va_arg expression
649 static void print_va_arg(const va_arg_expression_t *expression)
651 fputs("__builtin_va_arg(", out);
652 print_assignment_expression(expression->ap);
654 print_type(expression->base.type);
659 * Prints a select expression (. or ->).
661 * @param expression the select expression
663 static void print_select(const select_expression_t *expression)
665 print_expression_prec(expression->compound, PREC_POSTFIX);
666 if (is_type_pointer(skip_typeref(expression->compound->base.type))) {
671 fputs(expression->compound_entry->base.symbol->string, out);
675 * Prints a type classify expression.
677 * @param expr the type classify expression
679 static void print_classify_type_expression(
680 const classify_type_expression_t *const expr)
682 fputs("__builtin_classify_type(", out);
683 print_assignment_expression(expr->type_expression);
688 * Prints a designator.
690 * @param designator the designator
692 static void print_designator(const designator_t *designator)
694 for ( ; designator != NULL; designator = designator->next) {
695 if (designator->symbol == NULL) {
697 print_expression(designator->array_index);
701 fputs(designator->symbol->string, out);
707 * Prints an offsetof expression.
709 * @param expression the offset expression
711 static void print_offsetof_expression(const offsetof_expression_t *expression)
713 fputs("__builtin_offsetof", out);
715 print_type(expression->type);
717 print_designator(expression->designator);
722 * Prints a statement expression.
724 * @param expression the statement expression
726 static void print_statement_expression(const statement_expression_t *expression)
729 print_statement(expression->statement);
734 * Prints an expression with parenthesis if needed.
736 * @param expression the expression to print
737 * @param top_prec the precedence of the user of this expression.
739 static void print_expression_prec(const expression_t *expression, unsigned top_prec)
741 if (expression->kind == EXPR_UNARY_CAST_IMPLICIT && !print_implicit_casts) {
742 expression = expression->unary.value;
746 expression->base.parenthesized ||
747 (print_parenthesis && top_prec != PREC_BOTTOM) ||
748 top_prec > get_expression_precedence(expression->base.kind);
752 switch (expression->kind) {
755 fputs("$invalid expression$", out);
757 case EXPR_CHARACTER_CONSTANT:
758 print_character_constant(&expression->conste);
760 case EXPR_WIDE_CHARACTER_CONSTANT:
761 print_wide_character_constant(&expression->conste);
764 print_const(&expression->conste);
767 print_funcname(&expression->funcname);
769 case EXPR_STRING_LITERAL:
770 print_string_literal(&expression->string);
772 case EXPR_WIDE_STRING_LITERAL:
773 print_wide_string_literal(&expression->wide_string);
775 case EXPR_COMPOUND_LITERAL:
776 print_compound_literal(&expression->compound_literal);
779 print_call_expression(&expression->call);
782 print_binary_expression(&expression->binary);
785 case EXPR_REFERENCE_ENUM_VALUE:
786 print_reference_expression(&expression->reference);
788 case EXPR_ARRAY_ACCESS:
789 print_array_expression(&expression->array_access);
791 case EXPR_LABEL_ADDRESS:
792 print_label_address_expression(&expression->label_address);
795 print_unary_expression(&expression->unary);
799 print_typeprop_expression(&expression->typeprop);
801 case EXPR_BUILTIN_CONSTANT_P:
802 print_builtin_constant(&expression->builtin_constant);
804 case EXPR_BUILTIN_TYPES_COMPATIBLE_P:
805 print_builtin_types_compatible(&expression->builtin_types_compatible);
807 case EXPR_CONDITIONAL:
808 print_conditional(&expression->conditional);
811 print_va_start(&expression->va_starte);
814 print_va_arg(&expression->va_arge);
817 print_select(&expression->select);
819 case EXPR_CLASSIFY_TYPE:
820 print_classify_type_expression(&expression->classify_type);
823 print_offsetof_expression(&expression->offsetofe);
826 print_statement_expression(&expression->statement);
831 fprintf(out, "some expression of type %d", (int)expression->kind);
839 * Print an compound statement.
841 * @param block the compound statement
843 static void print_compound_statement(const compound_statement_t *block)
848 statement_t *statement = block->statements;
849 while (statement != NULL) {
850 if (statement->base.kind == STATEMENT_CASE_LABEL)
852 if (statement->kind != STATEMENT_LABEL)
854 print_statement(statement);
856 statement = statement->base.next;
860 fputs(block->stmt_expr ? "}" : "}\n", out);
864 * Print a return statement.
866 * @param statement the return statement
868 static void print_return_statement(const return_statement_t *statement)
870 expression_t const *const val = statement->value;
872 fputs("return ", out);
873 print_expression(val);
876 fputs("return;\n", out);
881 * Print an expression statement.
883 * @param statement the expression statement
885 static void print_expression_statement(const expression_statement_t *statement)
887 print_expression(statement->expression);
892 * Print a goto statement.
894 * @param statement the goto statement
896 static void print_goto_statement(const goto_statement_t *statement)
899 if (statement->expression != NULL) {
901 print_expression(statement->expression);
903 fputs(statement->label->base.symbol->string, out);
909 * Print a label statement.
911 * @param statement the label statement
913 static void print_label_statement(const label_statement_t *statement)
915 fprintf(out, "%s:\n", statement->label->base.symbol->string);
917 print_statement(statement->statement);
921 * Print an if statement.
923 * @param statement the if statement
925 static void print_if_statement(const if_statement_t *statement)
928 print_expression(statement->condition);
930 print_statement(statement->true_statement);
932 if (statement->false_statement != NULL) {
935 print_statement(statement->false_statement);
940 * Print a switch statement.
942 * @param statement the switch statement
944 static void print_switch_statement(const switch_statement_t *statement)
946 fputs("switch (", out);
947 print_expression(statement->expression);
949 print_statement(statement->body);
953 * Print a case label (including the default label).
955 * @param statement the case label statement
957 static void print_case_label(const case_label_statement_t *statement)
959 if (statement->expression == NULL) {
960 fputs("default:\n", out);
963 print_expression(statement->expression);
964 if (statement->end_range != NULL) {
966 print_expression(statement->end_range);
971 if (statement->statement != NULL) {
972 if (statement->statement->base.kind == STATEMENT_CASE_LABEL) {
976 print_statement(statement->statement);
980 static void print_typedef(const entity_t *entity)
982 fputs("typedef ", out);
983 print_type_ext(entity->typedefe.type, entity->base.symbol, NULL);
988 * returns true if the entity is a compiler generated one and has no real
989 * correspondenc in the source file
991 static bool is_generated_entity(const entity_t *entity)
993 if (entity->kind == ENTITY_TYPEDEF)
994 return entity->typedefe.builtin;
996 if (is_declaration(entity))
997 return entity->declaration.implicit;
1003 * Print a declaration statement.
1005 * @param statement the statement
1007 static void print_declaration_statement(
1008 const declaration_statement_t *statement)
1011 entity_t *entity = statement->declarations_begin;
1012 if (entity == NULL) {
1013 fputs("/* empty declaration statement */\n", out);
1017 entity_t *const end = statement->declarations_end->base.next;
1018 for (; entity != end; entity = entity->base.next) {
1019 if (entity->kind == ENTITY_ENUM_VALUE)
1021 if (is_generated_entity(entity))
1030 print_entity(entity);
1036 * Print a while statement.
1038 * @param statement the statement
1040 static void print_while_statement(const while_statement_t *statement)
1042 fputs("while (", out);
1043 print_expression(statement->condition);
1045 print_statement(statement->body);
1049 * Print a do-while statement.
1051 * @param statement the statement
1053 static void print_do_while_statement(const do_while_statement_t *statement)
1056 print_statement(statement->body);
1058 fputs("while (", out);
1059 print_expression(statement->condition);
1064 * Print a for statement.
1066 * @param statement the statement
1068 static void print_for_statement(const for_statement_t *statement)
1070 fputs("for (", out);
1071 if (statement->initialisation != NULL) {
1072 print_expression(statement->initialisation);
1075 entity_t const *entity = statement->scope.entities;
1076 for (; entity != NULL; entity = entity->base.next) {
1077 if (is_generated_entity(entity))
1079 /* FIXME display of multiple declarations is wrong */
1080 print_declaration(entity);
1083 if (statement->condition != NULL) {
1085 print_expression(statement->condition);
1088 if (statement->step != NULL) {
1090 print_expression(statement->step);
1093 print_statement(statement->body);
1097 * Print assembler arguments.
1099 * @param arguments the arguments
1101 static void print_asm_arguments(asm_argument_t *arguments)
1103 asm_argument_t *argument = arguments;
1104 for (; argument != NULL; argument = argument->next) {
1105 if (argument != arguments)
1108 if (argument->symbol) {
1109 fprintf(out, "[%s] ", argument->symbol->string);
1111 print_quoted_string(&argument->constraints, '"', 1);
1113 print_expression(argument->expression);
1119 * Print assembler clobbers.
1121 * @param clobbers the clobbers
1123 static void print_asm_clobbers(asm_clobber_t *clobbers)
1125 asm_clobber_t *clobber = clobbers;
1126 for (; clobber != NULL; clobber = clobber->next) {
1127 if (clobber != clobbers)
1130 print_quoted_string(&clobber->clobber, '"', 1);
1135 * Print an assembler statement.
1137 * @param statement the statement
1139 static void print_asm_statement(const asm_statement_t *statement)
1142 if (statement->is_volatile) {
1143 fputs("volatile ", out);
1146 print_quoted_string(&statement->asm_text, '"', 1);
1147 if (statement->outputs == NULL &&
1148 statement->inputs == NULL &&
1149 statement->clobbers == NULL)
1150 goto end_of_print_asm_statement;
1153 print_asm_arguments(statement->outputs);
1154 if (statement->inputs == NULL && statement->clobbers == NULL)
1155 goto end_of_print_asm_statement;
1158 print_asm_arguments(statement->inputs);
1159 if (statement->clobbers == NULL)
1160 goto end_of_print_asm_statement;
1163 print_asm_clobbers(statement->clobbers);
1165 end_of_print_asm_statement:
1170 * Print a microsoft __try statement.
1172 * @param statement the statement
1174 static void print_ms_try_statement(const ms_try_statement_t *statement)
1176 fputs("__try ", out);
1177 print_statement(statement->try_statement);
1179 if (statement->except_expression != NULL) {
1180 fputs("__except(", out);
1181 print_expression(statement->except_expression);
1184 fputs("__finally ", out);
1186 print_statement(statement->final_statement);
1190 * Print a microsoft __leave statement.
1192 * @param statement the statement
1194 static void print_leave_statement(const leave_statement_t *statement)
1197 fputs("__leave;\n", out);
1201 * Print a statement.
1203 * @param statement the statement
1205 void print_statement(const statement_t *statement)
1207 switch (statement->kind) {
1208 case STATEMENT_EMPTY:
1211 case STATEMENT_COMPOUND:
1212 print_compound_statement(&statement->compound);
1214 case STATEMENT_RETURN:
1215 print_return_statement(&statement->returns);
1217 case STATEMENT_EXPRESSION:
1218 print_expression_statement(&statement->expression);
1220 case STATEMENT_LABEL:
1221 print_label_statement(&statement->label);
1223 case STATEMENT_GOTO:
1224 print_goto_statement(&statement->gotos);
1226 case STATEMENT_CONTINUE:
1227 fputs("continue;\n", out);
1229 case STATEMENT_BREAK:
1230 fputs("break;\n", out);
1233 print_if_statement(&statement->ifs);
1235 case STATEMENT_SWITCH:
1236 print_switch_statement(&statement->switchs);
1238 case STATEMENT_CASE_LABEL:
1239 print_case_label(&statement->case_label);
1241 case STATEMENT_DECLARATION:
1242 print_declaration_statement(&statement->declaration);
1244 case STATEMENT_WHILE:
1245 print_while_statement(&statement->whiles);
1247 case STATEMENT_DO_WHILE:
1248 print_do_while_statement(&statement->do_while);
1251 print_for_statement(&statement->fors);
1254 print_asm_statement(&statement->asms);
1256 case STATEMENT_MS_TRY:
1257 print_ms_try_statement(&statement->ms_try);
1259 case STATEMENT_LEAVE:
1260 print_leave_statement(&statement->leave);
1262 case STATEMENT_INVALID:
1263 fputs("$invalid statement$\n", out);
1269 * Print a storage class.
1271 * @param storage_class the storage class
1273 static void print_storage_class(storage_class_tag_t storage_class)
1275 switch (storage_class) {
1276 case STORAGE_CLASS_NONE: return;
1277 case STORAGE_CLASS_TYPEDEF: fputs("typedef ", out); return;
1278 case STORAGE_CLASS_EXTERN: fputs("extern ", out); return;
1279 case STORAGE_CLASS_STATIC: fputs("static ", out); return;
1280 case STORAGE_CLASS_AUTO: fputs("auto ", out); return;
1281 case STORAGE_CLASS_REGISTER: fputs("register ", out); return;
1283 panic("invalid storage class");
1287 * Print an initializer.
1289 * @param initializer the initializer
1291 void print_initializer(const initializer_t *initializer)
1293 if (initializer == NULL) {
1298 switch (initializer->kind) {
1299 case INITIALIZER_VALUE: {
1300 const initializer_value_t *value = &initializer->value;
1301 print_assignment_expression(value->value);
1304 case INITIALIZER_LIST: {
1305 assert(initializer->kind == INITIALIZER_LIST);
1307 const initializer_list_t *list = &initializer->list;
1309 for (size_t i = 0 ; i < list->len; ++i) {
1310 const initializer_t *sub_init = list->initializers[i];
1311 print_initializer(list->initializers[i]);
1312 if (i < list->len-1) {
1313 if (sub_init == NULL || sub_init->kind != INITIALIZER_DESIGNATOR)
1320 case INITIALIZER_STRING:
1321 print_quoted_string(&initializer->string.string, '"', 1);
1323 case INITIALIZER_WIDE_STRING:
1324 print_quoted_wide_string(&initializer->wide_string.string, '"', 1);
1326 case INITIALIZER_DESIGNATOR:
1327 print_designator(initializer->designator.designator);
1332 panic("invalid initializer kind found");
1336 * Print microsoft extended declaration modifiers.
1338 static void print_ms_modifiers(const declaration_t *declaration)
1340 if ((c_mode & _MS) == 0)
1343 decl_modifiers_t modifiers = declaration->modifiers;
1345 bool ds_shown = false;
1346 const char *next = "(";
1348 if (declaration->base.kind == ENTITY_VARIABLE) {
1349 variable_t *variable = (variable_t*)declaration;
1350 if (variable->alignment != 0
1351 || variable->get_property_sym != NULL
1352 || variable->put_property_sym != NULL) {
1354 fputs("__declspec", out);
1358 if (variable->alignment != 0) {
1359 fputs(next, out); next = ", "; fprintf(out, "align(%u)", variable->alignment);
1361 if (variable->get_property_sym != NULL
1362 || variable->put_property_sym != NULL) {
1364 fputs(next, out); next = ", "; fputs("property(", out);
1365 if (variable->get_property_sym != NULL) {
1366 fprintf(out, "get=%s", variable->get_property_sym->string);
1369 if (variable->put_property_sym != NULL)
1370 fprintf(out, "%sput=%s", comma, variable->put_property_sym->string);
1376 /* DM_FORCEINLINE handled outside. */
1377 if ((modifiers & ~DM_FORCEINLINE) != 0) {
1379 fputs("__declspec", out);
1382 if (modifiers & DM_DLLIMPORT) {
1383 fputs(next, out); next = ", "; fputs("dllimport", out);
1385 if (modifiers & DM_DLLEXPORT) {
1386 fputs(next, out); next = ", "; fputs("dllexport", out);
1388 if (modifiers & DM_THREAD) {
1389 fputs(next, out); next = ", "; fputs("thread", out);
1391 if (modifiers & DM_NAKED) {
1392 fputs(next, out); next = ", "; fputs("naked", out);
1394 if (modifiers & DM_THREAD) {
1395 fputs(next, out); next = ", "; fputs("thread", out);
1397 if (modifiers & DM_SELECTANY) {
1398 fputs(next, out); next = ", "; fputs("selectany", out);
1400 if (modifiers & DM_NOTHROW) {
1401 fputs(next, out); next = ", "; fputs("nothrow", out);
1403 if (modifiers & DM_NORETURN) {
1404 fputs(next, out); next = ", "; fputs("noreturn", out);
1406 if (modifiers & DM_NOINLINE) {
1407 fputs(next, out); next = ", "; fputs("noinline", out);
1409 if (modifiers & DM_DEPRECATED) {
1410 fputs(next, out); next = ", "; fputs("deprecated", out);
1411 if (declaration->deprecated_string != NULL)
1412 fprintf(out, "(\"%s\")",
1413 declaration->deprecated_string);
1415 if (modifiers & DM_RESTRICT) {
1416 fputs(next, out); next = ", "; fputs("restrict", out);
1418 if (modifiers & DM_NOALIAS) {
1419 fputs(next, out); next = ", "; fputs("noalias", out);
1427 static void print_scope(const scope_t *scope)
1429 const entity_t *entity = scope->entities;
1430 for ( ; entity != NULL; entity = entity->base.next) {
1432 print_entity(entity);
1437 static void print_namespace(const namespace_t *namespace)
1439 fputs("namespace ", out);
1440 if (namespace->base.symbol != NULL) {
1441 fputs(namespace->base.symbol->string, out);
1448 print_scope(&namespace->members);
1456 * Print a variable or function declaration
1458 void print_declaration(const entity_t *entity)
1460 assert(is_declaration(entity));
1461 const declaration_t *declaration = &entity->declaration;
1463 print_storage_class((storage_class_tag_t)declaration->declared_storage_class);
1464 if (entity->kind == ENTITY_FUNCTION) {
1465 function_t *function = (function_t*)declaration;
1466 if (function->is_inline) {
1467 if (declaration->modifiers & DM_FORCEINLINE) {
1468 fputs("__forceinline ", out);
1469 } else if (declaration->modifiers & DM_MICROSOFT_INLINE) {
1470 fputs("__inline ", out);
1472 fputs("inline ", out);
1476 print_ms_modifiers(declaration);
1477 switch (entity->kind) {
1478 case ENTITY_FUNCTION:
1479 print_type_ext(entity->declaration.type, entity->base.symbol,
1480 &entity->function.parameters);
1482 if (entity->function.statement != NULL) {
1485 print_statement(entity->function.statement);
1490 case ENTITY_VARIABLE:
1491 if (entity->variable.thread_local)
1492 fputs("__thread ", out);
1493 print_type_ext(declaration->type, declaration->base.symbol, NULL);
1494 if (entity->variable.initializer != NULL) {
1496 print_initializer(entity->variable.initializer);
1501 print_type_ext(declaration->type, declaration->base.symbol, NULL);
1508 * Prints an expression.
1510 * @param expression the expression
1512 void print_expression(const expression_t *expression)
1514 print_expression_prec(expression, PREC_BOTTOM);
1518 * Print a declaration.
1520 * @param declaration the declaration
1522 void print_entity(const entity_t *entity)
1524 if (entity->base.namespc != NAMESPACE_NORMAL && entity->base.symbol == NULL)
1527 switch ((entity_kind_tag_t)entity->kind) {
1528 case ENTITY_VARIABLE:
1529 case ENTITY_PARAMETER:
1530 case ENTITY_COMPOUND_MEMBER:
1531 case ENTITY_FUNCTION:
1532 print_declaration(entity);
1534 case ENTITY_TYPEDEF:
1535 print_typedef(entity);
1538 fputs("struct ", out);
1539 fputs(entity->base.symbol->string, out);
1540 if (entity->structe.complete) {
1542 print_compound_definition(&entity->structe);
1547 fputs("union ", out);
1548 fputs(entity->base.symbol->string, out);
1549 if (entity->unione.complete) {
1551 print_compound_definition(&entity->unione);
1556 fputs("enum ", out);
1557 fputs(entity->base.symbol->string, out);
1559 print_enum_definition(&entity->enume);
1562 case ENTITY_NAMESPACE:
1563 print_namespace(&entity->namespacee);
1565 case ENTITY_LOCAL_LABEL:
1566 fprintf(out, "__label__ %s;", entity->base.symbol->string);
1569 case ENTITY_ENUM_VALUE:
1570 panic("print_entity used on unexpected entity type");
1571 case ENTITY_INVALID:
1574 panic("Invalid entity type encountered");
1578 * Print the AST of a translation unit.
1580 * @param unit the translation unit
1582 void print_ast(const translation_unit_t *unit)
1586 entity_t *entity = unit->scope.entities;
1587 for ( ; entity != NULL; entity = entity->base.next) {
1588 if (entity->kind == ENTITY_ENUM_VALUE)
1590 if (entity->base.namespc != NAMESPACE_NORMAL
1591 && entity->base.symbol == NULL)
1593 if (is_generated_entity(entity))
1597 print_entity(entity);
1602 bool is_constant_initializer(const initializer_t *initializer)
1604 switch (initializer->kind) {
1605 case INITIALIZER_STRING:
1606 case INITIALIZER_WIDE_STRING:
1607 case INITIALIZER_DESIGNATOR:
1610 case INITIALIZER_VALUE:
1611 return is_constant_expression(initializer->value.value);
1613 case INITIALIZER_LIST:
1614 for (size_t i = 0; i < initializer->list.len; ++i) {
1615 initializer_t *sub_initializer = initializer->list.initializers[i];
1616 if (!is_constant_initializer(sub_initializer))
1621 panic("invalid initializer kind found");
1624 static bool is_object_with_linker_constant_address(const expression_t *expression)
1626 switch (expression->kind) {
1627 case EXPR_UNARY_DEREFERENCE:
1628 return is_address_constant(expression->unary.value);
1631 type_t *base_type = skip_typeref(expression->select.compound->base.type);
1632 if (is_type_pointer(base_type)) {
1634 return is_address_constant(expression->select.compound);
1636 return is_object_with_linker_constant_address(expression->select.compound);
1640 case EXPR_ARRAY_ACCESS:
1641 return is_constant_expression(expression->array_access.index)
1642 && is_address_constant(expression->array_access.array_ref);
1644 case EXPR_REFERENCE: {
1645 entity_t *entity = expression->reference.entity;
1646 if (is_declaration(entity)) {
1647 switch ((storage_class_tag_t)entity->declaration.storage_class) {
1648 case STORAGE_CLASS_NONE:
1649 case STORAGE_CLASS_EXTERN:
1650 case STORAGE_CLASS_STATIC:
1652 entity->kind != ENTITY_VARIABLE ||
1653 !entity->variable.thread_local;
1655 case STORAGE_CLASS_REGISTER:
1656 case STORAGE_CLASS_TYPEDEF:
1657 case STORAGE_CLASS_AUTO:
1669 bool is_address_constant(const expression_t *expression)
1671 switch (expression->kind) {
1672 case EXPR_UNARY_TAKE_ADDRESS:
1673 return is_object_with_linker_constant_address(expression->unary.value);
1675 case EXPR_UNARY_DEREFERENCE: {
1677 = revert_automatic_type_conversion(expression->unary.value);
1678 /* dereferencing a function is a NOP */
1679 if (is_type_function(real_type)) {
1680 return is_address_constant(expression->unary.value);
1685 case EXPR_UNARY_CAST: {
1686 type_t *dest = skip_typeref(expression->base.type);
1687 if (!is_type_pointer(dest) && (
1688 dest->kind != TYPE_ATOMIC ||
1689 !(get_atomic_type_flags(dest->atomic.akind) & ATOMIC_TYPE_FLAG_INTEGER) ||
1690 get_atomic_type_size(dest->atomic.akind) < get_atomic_type_size(get_intptr_kind())
1694 return (is_constant_expression(expression->unary.value)
1695 || is_address_constant(expression->unary.value));
1698 case EXPR_BINARY_ADD:
1699 case EXPR_BINARY_SUB: {
1700 expression_t *left = expression->binary.left;
1701 expression_t *right = expression->binary.right;
1703 if (is_type_pointer(skip_typeref(left->base.type))) {
1704 return is_address_constant(left) && is_constant_expression(right);
1705 } else if (is_type_pointer(skip_typeref(right->base.type))) {
1706 return is_constant_expression(left) && is_address_constant(right);
1712 case EXPR_REFERENCE: {
1713 entity_t *entity = expression->reference.entity;
1714 if (!is_declaration(entity))
1717 type_t *type = skip_typeref(entity->declaration.type);
1718 if (is_type_function(type))
1720 if (is_type_array(type)) {
1721 return is_object_with_linker_constant_address(expression);
1723 /* Prevent stray errors */
1724 if (!is_type_valid(type))
1729 case EXPR_ARRAY_ACCESS: {
1730 type_t *const type =
1731 skip_typeref(revert_automatic_type_conversion(expression));
1733 is_type_array(type) &&
1734 is_constant_expression(expression->array_access.index) &&
1735 is_address_constant(expression->array_access.array_ref);
1744 * Check if the given expression is a call to a builtin function
1745 * returning a constant result.
1747 static bool is_builtin_const_call(const expression_t *expression)
1749 expression_t *function = expression->call.function;
1750 if (function->kind != EXPR_REFERENCE)
1752 reference_expression_t *ref = &function->reference;
1753 if (ref->entity->kind != ENTITY_FUNCTION)
1756 switch (ref->entity->function.btk) {
1757 case bk_gnu_builtin_huge_val:
1758 case bk_gnu_builtin_inf:
1759 case bk_gnu_builtin_inff:
1760 case bk_gnu_builtin_infl:
1761 case bk_gnu_builtin_nan:
1762 case bk_gnu_builtin_nanf:
1763 case bk_gnu_builtin_nanl:
1771 static bool is_constant_pointer(const expression_t *expression)
1773 if (is_constant_expression(expression))
1776 switch (expression->kind) {
1777 case EXPR_UNARY_CAST:
1778 return is_constant_pointer(expression->unary.value);
1784 static bool is_object_with_constant_address(const expression_t *expression)
1786 switch (expression->kind) {
1788 expression_t *compound = expression->select.compound;
1789 type_t *compound_type = compound->base.type;
1790 compound_type = skip_typeref(compound_type);
1791 if (is_type_pointer(compound_type)) {
1792 return is_constant_pointer(compound);
1794 return is_object_with_constant_address(compound);
1798 case EXPR_ARRAY_ACCESS: {
1799 array_access_expression_t const* const array_access =
1800 &expression->array_access;
1802 is_constant_expression(array_access->index) && (
1803 is_object_with_constant_address(array_access->array_ref) ||
1804 is_constant_pointer(array_access->array_ref)
1808 case EXPR_UNARY_DEREFERENCE:
1809 return is_constant_pointer(expression->unary.value);
1815 bool is_constant_expression(const expression_t *expression)
1817 switch (expression->kind) {
1820 case EXPR_CHARACTER_CONSTANT:
1821 case EXPR_WIDE_CHARACTER_CONSTANT:
1822 case EXPR_STRING_LITERAL:
1823 case EXPR_WIDE_STRING_LITERAL:
1824 case EXPR_CLASSIFY_TYPE:
1828 case EXPR_BUILTIN_CONSTANT_P:
1829 case EXPR_BUILTIN_TYPES_COMPATIBLE_P:
1830 case EXPR_LABEL_ADDRESS:
1831 case EXPR_REFERENCE_ENUM_VALUE:
1835 type_t *type = expression->typeprop.type;
1837 type = expression->typeprop.tp_expression->base.type;
1839 type = skip_typeref(type);
1840 if (is_type_array(type) && type->array.is_vla)
1848 case EXPR_STATEMENT:
1849 case EXPR_REFERENCE:
1850 case EXPR_UNARY_POSTFIX_INCREMENT:
1851 case EXPR_UNARY_POSTFIX_DECREMENT:
1852 case EXPR_UNARY_PREFIX_INCREMENT:
1853 case EXPR_UNARY_PREFIX_DECREMENT:
1854 case EXPR_UNARY_ASSUME: /* has VOID type */
1855 case EXPR_UNARY_DEREFERENCE:
1856 case EXPR_UNARY_DELETE:
1857 case EXPR_UNARY_DELETE_ARRAY:
1858 case EXPR_UNARY_THROW:
1859 case EXPR_BINARY_ASSIGN:
1860 case EXPR_BINARY_MUL_ASSIGN:
1861 case EXPR_BINARY_DIV_ASSIGN:
1862 case EXPR_BINARY_MOD_ASSIGN:
1863 case EXPR_BINARY_ADD_ASSIGN:
1864 case EXPR_BINARY_SUB_ASSIGN:
1865 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
1866 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
1867 case EXPR_BINARY_BITWISE_AND_ASSIGN:
1868 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
1869 case EXPR_BINARY_BITWISE_OR_ASSIGN:
1870 case EXPR_BINARY_COMMA:
1871 case EXPR_ARRAY_ACCESS:
1874 case EXPR_UNARY_TAKE_ADDRESS:
1875 return is_object_with_constant_address(expression->unary.value);
1878 return is_builtin_const_call(expression);
1880 case EXPR_UNARY_NEGATE:
1881 case EXPR_UNARY_PLUS:
1882 case EXPR_UNARY_BITWISE_NEGATE:
1883 case EXPR_UNARY_NOT:
1884 return is_constant_expression(expression->unary.value);
1886 case EXPR_UNARY_CAST:
1887 case EXPR_UNARY_CAST_IMPLICIT:
1888 return is_type_arithmetic(skip_typeref(expression->base.type))
1889 && is_constant_expression(expression->unary.value);
1891 case EXPR_BINARY_ADD:
1892 case EXPR_BINARY_SUB:
1893 case EXPR_BINARY_MUL:
1894 case EXPR_BINARY_DIV:
1895 case EXPR_BINARY_MOD:
1896 case EXPR_BINARY_EQUAL:
1897 case EXPR_BINARY_NOTEQUAL:
1898 case EXPR_BINARY_LESS:
1899 case EXPR_BINARY_LESSEQUAL:
1900 case EXPR_BINARY_GREATER:
1901 case EXPR_BINARY_GREATEREQUAL:
1902 case EXPR_BINARY_BITWISE_AND:
1903 case EXPR_BINARY_BITWISE_OR:
1904 case EXPR_BINARY_BITWISE_XOR:
1905 case EXPR_BINARY_SHIFTLEFT:
1906 case EXPR_BINARY_SHIFTRIGHT:
1907 case EXPR_BINARY_ISGREATER:
1908 case EXPR_BINARY_ISGREATEREQUAL:
1909 case EXPR_BINARY_ISLESS:
1910 case EXPR_BINARY_ISLESSEQUAL:
1911 case EXPR_BINARY_ISLESSGREATER:
1912 case EXPR_BINARY_ISUNORDERED:
1913 return is_constant_expression(expression->binary.left)
1914 && is_constant_expression(expression->binary.right);
1916 case EXPR_BINARY_LOGICAL_AND: {
1917 expression_t const *const left = expression->binary.left;
1918 if (!is_constant_expression(left))
1920 if (fold_constant(left) == 0)
1922 return is_constant_expression(expression->binary.right);
1925 case EXPR_BINARY_LOGICAL_OR: {
1926 expression_t const *const left = expression->binary.left;
1927 if (!is_constant_expression(left))
1929 if (fold_constant(left) != 0)
1931 return is_constant_expression(expression->binary.right);
1934 case EXPR_COMPOUND_LITERAL:
1935 return is_constant_initializer(expression->compound_literal.initializer);
1937 case EXPR_CONDITIONAL: {
1938 expression_t *condition = expression->conditional.condition;
1939 if (!is_constant_expression(condition))
1942 long val = fold_constant(condition);
1944 expression_t const *const t = expression->conditional.true_expression;
1945 return t == NULL || is_constant_expression(t);
1947 return is_constant_expression(expression->conditional.false_expression);
1957 panic("invalid expression found (is constant expression)");
1961 * Initialize the AST construction.
1965 obstack_init(&ast_obstack);
1973 obstack_free(&ast_obstack, NULL);
1977 * Set the output stream for the AST printer.
1979 * @param stream the output stream
1981 void ast_set_output(FILE *stream)
1984 type_set_output(stream);
1988 * Allocate an AST object of the given size.
1990 * @param size the size of the object to allocate
1992 * @return A new allocated object in the AST memeory space.
1994 void *(allocate_ast)(size_t size)
1996 return _allocate_ast(size);