2 * This file is part of cparser.
3 * Copyright (C) 2007-2009 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_VA_COPY] = PREC_PRIMARY,
123 [EXPR_STATEMENT] = PREC_PRIMARY,
124 [EXPR_LABEL_ADDRESS] = PREC_PRIMARY,
126 [EXPR_UNARY_NEGATE] = PREC_UNARY,
127 [EXPR_UNARY_PLUS] = PREC_UNARY,
128 [EXPR_UNARY_BITWISE_NEGATE] = PREC_UNARY,
129 [EXPR_UNARY_NOT] = PREC_UNARY,
130 [EXPR_UNARY_DEREFERENCE] = PREC_UNARY,
131 [EXPR_UNARY_TAKE_ADDRESS] = PREC_UNARY,
132 [EXPR_UNARY_POSTFIX_INCREMENT] = PREC_POSTFIX,
133 [EXPR_UNARY_POSTFIX_DECREMENT] = PREC_POSTFIX,
134 [EXPR_UNARY_PREFIX_INCREMENT] = PREC_UNARY,
135 [EXPR_UNARY_PREFIX_DECREMENT] = PREC_UNARY,
136 [EXPR_UNARY_CAST] = PREC_UNARY,
137 [EXPR_UNARY_CAST_IMPLICIT] = PREC_UNARY,
138 [EXPR_UNARY_ASSUME] = PREC_PRIMARY,
139 [EXPR_UNARY_DELETE] = PREC_UNARY,
140 [EXPR_UNARY_DELETE_ARRAY] = PREC_UNARY,
141 [EXPR_UNARY_THROW] = PREC_ASSIGNMENT,
143 [EXPR_BINARY_ADD] = PREC_ADDITIVE,
144 [EXPR_BINARY_SUB] = PREC_ADDITIVE,
145 [EXPR_BINARY_MUL] = PREC_MULTIPLICATIVE,
146 [EXPR_BINARY_DIV] = PREC_MULTIPLICATIVE,
147 [EXPR_BINARY_MOD] = PREC_MULTIPLICATIVE,
148 [EXPR_BINARY_EQUAL] = PREC_EQUALITY,
149 [EXPR_BINARY_NOTEQUAL] = PREC_EQUALITY,
150 [EXPR_BINARY_LESS] = PREC_RELATIONAL,
151 [EXPR_BINARY_LESSEQUAL] = PREC_RELATIONAL,
152 [EXPR_BINARY_GREATER] = PREC_RELATIONAL,
153 [EXPR_BINARY_GREATEREQUAL] = PREC_RELATIONAL,
154 [EXPR_BINARY_BITWISE_AND] = PREC_AND,
155 [EXPR_BINARY_BITWISE_OR] = PREC_OR,
156 [EXPR_BINARY_BITWISE_XOR] = PREC_XOR,
157 [EXPR_BINARY_LOGICAL_AND] = PREC_LOGICAL_AND,
158 [EXPR_BINARY_LOGICAL_OR] = PREC_LOGICAL_OR,
159 [EXPR_BINARY_SHIFTLEFT] = PREC_SHIFT,
160 [EXPR_BINARY_SHIFTRIGHT] = PREC_SHIFT,
161 [EXPR_BINARY_ASSIGN] = PREC_ASSIGNMENT,
162 [EXPR_BINARY_MUL_ASSIGN] = PREC_ASSIGNMENT,
163 [EXPR_BINARY_DIV_ASSIGN] = PREC_ASSIGNMENT,
164 [EXPR_BINARY_MOD_ASSIGN] = PREC_ASSIGNMENT,
165 [EXPR_BINARY_ADD_ASSIGN] = PREC_ASSIGNMENT,
166 [EXPR_BINARY_SUB_ASSIGN] = PREC_ASSIGNMENT,
167 [EXPR_BINARY_SHIFTLEFT_ASSIGN] = PREC_ASSIGNMENT,
168 [EXPR_BINARY_SHIFTRIGHT_ASSIGN] = PREC_ASSIGNMENT,
169 [EXPR_BINARY_BITWISE_AND_ASSIGN] = PREC_ASSIGNMENT,
170 [EXPR_BINARY_BITWISE_XOR_ASSIGN] = PREC_ASSIGNMENT,
171 [EXPR_BINARY_BITWISE_OR_ASSIGN] = PREC_ASSIGNMENT,
172 [EXPR_BINARY_COMMA] = PREC_EXPRESSION,
174 [EXPR_BINARY_ISGREATER] = PREC_PRIMARY,
175 [EXPR_BINARY_ISGREATEREQUAL] = PREC_PRIMARY,
176 [EXPR_BINARY_ISLESS] = PREC_PRIMARY,
177 [EXPR_BINARY_ISLESSEQUAL] = PREC_PRIMARY,
178 [EXPR_BINARY_ISLESSGREATER] = PREC_PRIMARY,
179 [EXPR_BINARY_ISUNORDERED] = PREC_PRIMARY
181 assert((size_t)kind < lengthof(prec));
182 unsigned res = prec[kind];
184 assert(res != PREC_BOTTOM);
189 * Print a constant expression.
191 * @param cnst the constant expression
193 static void print_const(const const_expression_t *cnst)
195 if (cnst->base.type == NULL)
198 const type_t *const type = skip_typeref(cnst->base.type);
200 if (is_type_atomic(type, ATOMIC_TYPE_BOOL)) {
201 fputs(cnst->v.int_value ? "true" : "false", out);
202 } else if (is_type_integer(type)) {
203 fprintf(out, "%lld", cnst->v.int_value);
204 } else if (is_type_float(type)) {
205 long double const val = cnst->v.float_value;
207 /* ARG, no way to print long double */
208 fprintf(out, "%.20g", (double)val);
210 fprintf(out, "%.20Lg", val);
212 if (isfinite(val) && truncl(val) == val)
215 panic("unknown constant");
219 switch (type->atomic.akind) {
220 case ATOMIC_TYPE_UINT: suffix = "U"; break;
221 case ATOMIC_TYPE_LONG: suffix = "L"; break;
222 case ATOMIC_TYPE_ULONG: suffix = "UL"; break;
223 case ATOMIC_TYPE_LONGLONG: suffix = "LL"; break;
224 case ATOMIC_TYPE_ULONGLONG: suffix = "ULL"; break;
225 case ATOMIC_TYPE_FLOAT: suffix = "F"; break;
226 case ATOMIC_TYPE_LONG_DOUBLE: suffix = "L"; break;
234 * Print a quoted string constant.
236 * @param string the string constant
237 * @param border the border char
238 * @param skip number of chars to skip at the end
240 static void print_quoted_string(const string_t *const string, char border, int skip)
243 const char *end = string->begin + string->size - skip;
244 for (const char *c = string->begin; c != end; ++c) {
245 unsigned char const tc = *c;
250 case '\\': fputs("\\\\", out); break;
251 case '\a': fputs("\\a", out); break;
252 case '\b': fputs("\\b", out); break;
253 case '\f': fputs("\\f", out); break;
254 case '\n': fputs("\\n", out); break;
255 case '\r': fputs("\\r", out); break;
256 case '\t': fputs("\\t", out); break;
257 case '\v': fputs("\\v", out); break;
258 case '\?': fputs("\\?", out); break;
260 if (c_mode & _GNUC) {
261 fputs("\\e", out); break;
265 if (tc < 0x80 && !isprint(tc)) {
266 fprintf(out, "\\%03o", (unsigned)tc);
277 * Prints a wide string literal expression.
279 * @param wstr the wide string literal expression
280 * @param border the border char
281 * @param skip number of chars to skip at the end
283 static void print_quoted_wide_string(const wide_string_t *const wstr,
284 char border, int skip)
288 const wchar_rep_t *end = wstr->begin + wstr->size - skip;
289 for (const wchar_rep_t *c = wstr->begin; c != end; ++c) {
291 case L'\"': fputs("\\\"", out); break;
292 case L'\\': fputs("\\\\", out); break;
293 case L'\a': fputs("\\a", out); break;
294 case L'\b': fputs("\\b", out); break;
295 case L'\f': fputs("\\f", out); break;
296 case L'\n': fputs("\\n", out); break;
297 case L'\r': fputs("\\r", out); break;
298 case L'\t': fputs("\\t", out); break;
299 case L'\v': fputs("\\v", out); break;
300 case L'\?': fputs("\\?", out); break;
302 if (c_mode & _GNUC) {
303 fputs("\\e", out); break;
307 const unsigned tc = *c;
312 fprintf(out, "\\%03o", tc);
314 } else if (tc < 0x800) {
315 fputc(0xC0 | (tc >> 6), out);
316 fputc(0x80 | (tc & 0x3F), out);
317 } else if (tc < 0x10000) {
318 fputc(0xE0 | ( tc >> 12), out);
319 fputc(0x80 | ((tc >> 6) & 0x3F), out);
320 fputc(0x80 | ( tc & 0x3F), out);
322 fputc(0xF0 | ( tc >> 18), out);
323 fputc(0x80 | ((tc >> 12) & 0x3F), out);
324 fputc(0x80 | ((tc >> 6) & 0x3F), out);
325 fputc(0x80 | ( tc & 0x3F), out);
334 * Print a constant character expression.
336 * @param cnst the constant character expression
338 static void print_character_constant(const const_expression_t *cnst)
340 print_quoted_string(&cnst->v.character, '\'', 0);
343 static void print_wide_character_constant(const const_expression_t *cnst)
345 print_quoted_wide_string(&cnst->v.wide_character, '\'', 0);
349 * Prints a string literal expression.
351 * @param string_literal the string literal expression
353 static void print_string_literal(
354 const string_literal_expression_t *string_literal)
356 print_quoted_string(&string_literal->value, '"', 1);
360 * Prints a predefined symbol.
362 static void print_funcname(const funcname_expression_t *funcname)
365 switch (funcname->kind) {
366 case FUNCNAME_FUNCTION: s = (c_mode & _C99) ? "__func__" : "__FUNCTION__"; break;
367 case FUNCNAME_PRETTY_FUNCTION: s = "__PRETTY_FUNCTION__"; break;
368 case FUNCNAME_FUNCSIG: s = "__FUNCSIG__"; break;
369 case FUNCNAME_FUNCDNAME: s = "__FUNCDNAME__"; break;
374 static void print_wide_string_literal(
375 const wide_string_literal_expression_t *const wstr)
377 print_quoted_wide_string(&wstr->value, '"', 1);
380 static void print_compound_literal(
381 const compound_literal_expression_t *expression)
384 print_type(expression->type);
386 print_initializer(expression->initializer);
389 static void print_assignment_expression(const expression_t *const expr)
391 print_expression_prec(expr, PREC_ASSIGNMENT);
395 * Prints a call expression.
397 * @param call the call expression
399 static void print_call_expression(const call_expression_t *call)
401 print_expression_prec(call->function, PREC_POSTFIX);
403 call_argument_t *argument = call->arguments;
405 while (argument != NULL) {
411 print_assignment_expression(argument->expression);
413 argument = argument->next;
419 * Prints a binary expression.
421 * @param binexpr the binary expression
423 static void print_binary_expression(const binary_expression_t *binexpr)
425 unsigned prec = get_expression_precedence(binexpr->base.kind);
426 int r2l = right_to_left(prec);
428 print_expression_prec(binexpr->left, prec + r2l);
430 switch (binexpr->base.kind) {
431 case EXPR_BINARY_COMMA: op = ", "; break;
432 case EXPR_BINARY_ASSIGN: op = " = "; break;
433 case EXPR_BINARY_ADD: op = " + "; break;
434 case EXPR_BINARY_SUB: op = " - "; break;
435 case EXPR_BINARY_MUL: op = " * "; break;
436 case EXPR_BINARY_MOD: op = " % "; break;
437 case EXPR_BINARY_DIV: op = " / "; break;
438 case EXPR_BINARY_BITWISE_OR: op = " | "; break;
439 case EXPR_BINARY_BITWISE_AND: op = " & "; break;
440 case EXPR_BINARY_BITWISE_XOR: op = " ^ "; break;
441 case EXPR_BINARY_LOGICAL_OR: op = " || "; break;
442 case EXPR_BINARY_LOGICAL_AND: op = " && "; break;
443 case EXPR_BINARY_NOTEQUAL: op = " != "; break;
444 case EXPR_BINARY_EQUAL: op = " == "; break;
445 case EXPR_BINARY_LESS: op = " < "; break;
446 case EXPR_BINARY_LESSEQUAL: op = " <= "; break;
447 case EXPR_BINARY_GREATER: op = " > "; break;
448 case EXPR_BINARY_GREATEREQUAL: op = " >= "; break;
449 case EXPR_BINARY_SHIFTLEFT: op = " << "; break;
450 case EXPR_BINARY_SHIFTRIGHT: op = " >> "; break;
452 case EXPR_BINARY_ADD_ASSIGN: op = " += "; break;
453 case EXPR_BINARY_SUB_ASSIGN: op = " -= "; break;
454 case EXPR_BINARY_MUL_ASSIGN: op = " *= "; break;
455 case EXPR_BINARY_MOD_ASSIGN: op = " %= "; break;
456 case EXPR_BINARY_DIV_ASSIGN: op = " /= "; break;
457 case EXPR_BINARY_BITWISE_OR_ASSIGN: op = " |= "; break;
458 case EXPR_BINARY_BITWISE_AND_ASSIGN: op = " &= "; break;
459 case EXPR_BINARY_BITWISE_XOR_ASSIGN: op = " ^= "; break;
460 case EXPR_BINARY_SHIFTLEFT_ASSIGN: op = " <<= "; break;
461 case EXPR_BINARY_SHIFTRIGHT_ASSIGN: op = " >>= "; break;
462 default: panic("invalid binexpression found");
465 print_expression_prec(binexpr->right, prec + 1 - r2l);
469 * Prints an unary expression.
471 * @param unexpr the unary expression
473 static void print_unary_expression(const unary_expression_t *unexpr)
475 unsigned prec = get_expression_precedence(unexpr->base.kind);
476 switch (unexpr->base.kind) {
477 case EXPR_UNARY_NEGATE: fputc('-', out); break;
478 case EXPR_UNARY_PLUS: fputc('+', out); break;
479 case EXPR_UNARY_NOT: fputc('!', out); break;
480 case EXPR_UNARY_BITWISE_NEGATE: fputc('~', out); break;
481 case EXPR_UNARY_PREFIX_INCREMENT: fputs("++", out); break;
482 case EXPR_UNARY_PREFIX_DECREMENT: fputs("--", out); break;
483 case EXPR_UNARY_DEREFERENCE: fputc('*', out); break;
484 case EXPR_UNARY_TAKE_ADDRESS: fputc('&', out); break;
485 case EXPR_UNARY_DELETE: fputs("delete ", out); break;
486 case EXPR_UNARY_DELETE_ARRAY: fputs("delete [] ", out); break;
488 case EXPR_UNARY_POSTFIX_INCREMENT:
489 print_expression_prec(unexpr->value, prec);
492 case EXPR_UNARY_POSTFIX_DECREMENT:
493 print_expression_prec(unexpr->value, prec);
496 case EXPR_UNARY_CAST_IMPLICIT:
497 case EXPR_UNARY_CAST:
499 print_type(unexpr->base.type);
502 case EXPR_UNARY_ASSUME:
503 fputs("__assume(", out);
504 print_assignment_expression(unexpr->value);
508 case EXPR_UNARY_THROW:
509 if (unexpr->value == NULL) {
513 fputs("throw ", out);
517 panic("invalid unary expression found");
519 print_expression_prec(unexpr->value, prec);
523 * Prints a reference expression.
525 * @param ref the reference expression
527 static void print_reference_expression(const reference_expression_t *ref)
529 fputs(ref->entity->base.symbol->string, out);
533 * Prints a label address expression.
535 * @param ref the reference expression
537 static void print_label_address_expression(const label_address_expression_t *le)
539 fprintf(out, "&&%s", le->label->base.symbol->string);
543 * Prints an array expression.
545 * @param expression the array expression
547 static void print_array_expression(const array_access_expression_t *expression)
549 if (!expression->flipped) {
550 print_expression_prec(expression->array_ref, PREC_POSTFIX);
552 print_expression(expression->index);
555 print_expression_prec(expression->index, PREC_POSTFIX);
557 print_expression(expression->array_ref);
563 * Prints a typeproperty expression (sizeof or __alignof__).
565 * @param expression the type property expression
567 static void print_typeprop_expression(const typeprop_expression_t *expression)
569 if (expression->base.kind == EXPR_SIZEOF) {
570 fputs("sizeof", out);
572 assert(expression->base.kind == EXPR_ALIGNOF);
573 fputs("__alignof__", out);
575 if (expression->tp_expression != NULL) {
576 /* PREC_TOP: always print the '()' here, sizeof x is right but unusual */
577 print_expression_prec(expression->tp_expression, PREC_TOP);
580 print_type(expression->type);
586 * Prints a builtin constant expression.
588 * @param expression the builtin constant expression
590 static void print_builtin_constant(const builtin_constant_expression_t *expression)
592 fputs("__builtin_constant_p(", out);
593 print_assignment_expression(expression->value);
598 * Prints a builtin types compatible expression.
600 * @param expression the builtin types compatible expression
602 static void print_builtin_types_compatible(
603 const builtin_types_compatible_expression_t *expression)
605 fputs("__builtin_types_compatible_p(", out);
606 print_type(expression->left);
608 print_type(expression->right);
613 * Prints a conditional expression.
615 * @param expression the conditional expression
617 static void print_conditional(const conditional_expression_t *expression)
619 print_expression_prec(expression->condition, PREC_LOGICAL_OR);
620 if (expression->true_expression != NULL) {
622 print_expression_prec(expression->true_expression, PREC_EXPRESSION);
627 precedence_t prec = c_mode & _CXX ? PREC_ASSIGNMENT : PREC_CONDITIONAL;
628 print_expression_prec(expression->false_expression, prec);
632 * Prints a va_start expression.
634 * @param expression the va_start expression
636 static void print_va_start(const va_start_expression_t *const expression)
638 fputs("__builtin_va_start(", out);
639 print_assignment_expression(expression->ap);
641 fputs(expression->parameter->base.base.symbol->string, out);
646 * Prints a va_arg expression.
648 * @param expression the va_arg expression
650 static void print_va_arg(const va_arg_expression_t *expression)
652 fputs("__builtin_va_arg(", out);
653 print_assignment_expression(expression->ap);
655 print_type(expression->base.type);
660 * Prints a va_copy expression.
662 * @param expression the va_copy expression
664 static void print_va_copy(const va_copy_expression_t *expression)
666 fputs("__builtin_va_copy(", out);
667 print_assignment_expression(expression->dst);
669 print_assignment_expression(expression->src);
674 * Prints a select expression (. or ->).
676 * @param expression the select expression
678 static void print_select(const select_expression_t *expression)
680 print_expression_prec(expression->compound, PREC_POSTFIX);
681 if (is_type_pointer(skip_typeref(expression->compound->base.type))) {
686 fputs(expression->compound_entry->base.symbol->string, out);
690 * Prints a type classify expression.
692 * @param expr the type classify expression
694 static void print_classify_type_expression(
695 const classify_type_expression_t *const expr)
697 fputs("__builtin_classify_type(", out);
698 print_assignment_expression(expr->type_expression);
703 * Prints a designator.
705 * @param designator the designator
707 static void print_designator(const designator_t *designator)
709 for ( ; designator != NULL; designator = designator->next) {
710 if (designator->symbol == NULL) {
712 print_expression(designator->array_index);
716 fputs(designator->symbol->string, out);
722 * Prints an offsetof expression.
724 * @param expression the offset expression
726 static void print_offsetof_expression(const offsetof_expression_t *expression)
728 fputs("__builtin_offsetof(", out);
729 print_type(expression->type);
731 print_designator(expression->designator);
736 * Prints a statement expression.
738 * @param expression the statement expression
740 static void print_statement_expression(const statement_expression_t *expression)
743 print_statement(expression->statement);
748 * Prints an expression with parenthesis if needed.
750 * @param expression the expression to print
751 * @param top_prec the precedence of the user of this expression.
753 static void print_expression_prec(const expression_t *expression, unsigned top_prec)
755 if (expression->kind == EXPR_UNARY_CAST_IMPLICIT && !print_implicit_casts) {
756 expression = expression->unary.value;
760 expression->base.parenthesized ||
761 (print_parenthesis && top_prec != PREC_BOTTOM) ||
762 top_prec > get_expression_precedence(expression->base.kind);
766 switch (expression->kind) {
769 fputs("$invalid expression$", out);
771 case EXPR_CHARACTER_CONSTANT:
772 print_character_constant(&expression->conste);
774 case EXPR_WIDE_CHARACTER_CONSTANT:
775 print_wide_character_constant(&expression->conste);
778 print_const(&expression->conste);
781 print_funcname(&expression->funcname);
783 case EXPR_STRING_LITERAL:
784 print_string_literal(&expression->string);
786 case EXPR_WIDE_STRING_LITERAL:
787 print_wide_string_literal(&expression->wide_string);
789 case EXPR_COMPOUND_LITERAL:
790 print_compound_literal(&expression->compound_literal);
793 print_call_expression(&expression->call);
796 print_binary_expression(&expression->binary);
799 case EXPR_REFERENCE_ENUM_VALUE:
800 print_reference_expression(&expression->reference);
802 case EXPR_ARRAY_ACCESS:
803 print_array_expression(&expression->array_access);
805 case EXPR_LABEL_ADDRESS:
806 print_label_address_expression(&expression->label_address);
809 print_unary_expression(&expression->unary);
813 print_typeprop_expression(&expression->typeprop);
815 case EXPR_BUILTIN_CONSTANT_P:
816 print_builtin_constant(&expression->builtin_constant);
818 case EXPR_BUILTIN_TYPES_COMPATIBLE_P:
819 print_builtin_types_compatible(&expression->builtin_types_compatible);
821 case EXPR_CONDITIONAL:
822 print_conditional(&expression->conditional);
825 print_va_start(&expression->va_starte);
828 print_va_arg(&expression->va_arge);
831 print_va_copy(&expression->va_copye);
834 print_select(&expression->select);
836 case EXPR_CLASSIFY_TYPE:
837 print_classify_type_expression(&expression->classify_type);
840 print_offsetof_expression(&expression->offsetofe);
843 print_statement_expression(&expression->statement);
848 fprintf(out, "some expression of type %d", (int)expression->kind);
856 * Print an compound statement.
858 * @param block the compound statement
860 static void print_compound_statement(const compound_statement_t *block)
865 statement_t *statement = block->statements;
866 while (statement != NULL) {
867 if (statement->base.kind == STATEMENT_CASE_LABEL)
869 if (statement->kind != STATEMENT_LABEL)
871 print_statement(statement);
873 statement = statement->base.next;
877 fputs(block->stmt_expr ? "}" : "}\n", out);
881 * Print a return statement.
883 * @param statement the return statement
885 static void print_return_statement(const return_statement_t *statement)
887 expression_t const *const val = statement->value;
889 fputs("return ", out);
890 print_expression(val);
893 fputs("return;\n", out);
898 * Print an expression statement.
900 * @param statement the expression statement
902 static void print_expression_statement(const expression_statement_t *statement)
904 print_expression(statement->expression);
909 * Print a goto statement.
911 * @param statement the goto statement
913 static void print_goto_statement(const goto_statement_t *statement)
916 if (statement->expression != NULL) {
918 print_expression(statement->expression);
920 fputs(statement->label->base.symbol->string, out);
926 * Print a label statement.
928 * @param statement the label statement
930 static void print_label_statement(const label_statement_t *statement)
932 fprintf(out, "%s:\n", statement->label->base.symbol->string);
934 print_statement(statement->statement);
938 * Print an if statement.
940 * @param statement the if statement
942 static void print_if_statement(const if_statement_t *statement)
945 print_expression(statement->condition);
947 print_statement(statement->true_statement);
949 if (statement->false_statement != NULL) {
952 print_statement(statement->false_statement);
957 * Print a switch statement.
959 * @param statement the switch statement
961 static void print_switch_statement(const switch_statement_t *statement)
963 fputs("switch (", out);
964 print_expression(statement->expression);
966 print_statement(statement->body);
970 * Print a case label (including the default label).
972 * @param statement the case label statement
974 static void print_case_label(const case_label_statement_t *statement)
976 if (statement->expression == NULL) {
977 fputs("default:\n", out);
980 print_expression(statement->expression);
981 if (statement->end_range != NULL) {
983 print_expression(statement->end_range);
988 if (statement->statement != NULL) {
989 if (statement->statement->base.kind == STATEMENT_CASE_LABEL) {
993 print_statement(statement->statement);
997 static void print_typedef(const entity_t *entity)
999 fputs("typedef ", out);
1000 print_type_ext(entity->typedefe.type, entity->base.symbol, NULL);
1005 * returns true if the entity is a compiler generated one and has no real
1006 * correspondenc in the source file
1008 static bool is_generated_entity(const entity_t *entity)
1010 if (entity->kind == ENTITY_TYPEDEF)
1011 return entity->typedefe.builtin;
1013 if (is_declaration(entity))
1014 return entity->declaration.implicit;
1020 * Print a declaration statement.
1022 * @param statement the statement
1024 static void print_declaration_statement(
1025 const declaration_statement_t *statement)
1028 entity_t *entity = statement->declarations_begin;
1029 if (entity == NULL) {
1030 fputs("/* empty declaration statement */\n", out);
1034 entity_t *const end = statement->declarations_end->base.next;
1035 for (; entity != end; entity = entity->base.next) {
1036 if (entity->kind == ENTITY_ENUM_VALUE)
1038 if (is_generated_entity(entity))
1047 print_entity(entity);
1053 * Print a while statement.
1055 * @param statement the statement
1057 static void print_while_statement(const while_statement_t *statement)
1059 fputs("while (", out);
1060 print_expression(statement->condition);
1062 print_statement(statement->body);
1066 * Print a do-while statement.
1068 * @param statement the statement
1070 static void print_do_while_statement(const do_while_statement_t *statement)
1073 print_statement(statement->body);
1075 fputs("while (", out);
1076 print_expression(statement->condition);
1081 * Print a for statement.
1083 * @param statement the statement
1085 static void print_for_statement(const for_statement_t *statement)
1087 fputs("for (", out);
1088 if (statement->initialisation != NULL) {
1089 print_expression(statement->initialisation);
1092 entity_t const *entity = statement->scope.entities;
1093 for (; entity != NULL; entity = entity->base.next) {
1094 if (is_generated_entity(entity))
1096 /* FIXME display of multiple declarations is wrong */
1097 print_declaration(entity);
1100 if (statement->condition != NULL) {
1102 print_expression(statement->condition);
1105 if (statement->step != NULL) {
1107 print_expression(statement->step);
1110 print_statement(statement->body);
1114 * Print assembler arguments.
1116 * @param arguments the arguments
1118 static void print_asm_arguments(asm_argument_t *arguments)
1120 asm_argument_t *argument = arguments;
1121 for (; argument != NULL; argument = argument->next) {
1122 if (argument != arguments)
1125 if (argument->symbol) {
1126 fprintf(out, "[%s] ", argument->symbol->string);
1128 print_quoted_string(&argument->constraints, '"', 1);
1130 print_expression(argument->expression);
1136 * Print assembler clobbers.
1138 * @param clobbers the clobbers
1140 static void print_asm_clobbers(asm_clobber_t *clobbers)
1142 asm_clobber_t *clobber = clobbers;
1143 for (; clobber != NULL; clobber = clobber->next) {
1144 if (clobber != clobbers)
1147 print_quoted_string(&clobber->clobber, '"', 1);
1152 * Print an assembler statement.
1154 * @param statement the statement
1156 static void print_asm_statement(const asm_statement_t *statement)
1159 if (statement->is_volatile) {
1160 fputs("volatile ", out);
1163 print_quoted_string(&statement->asm_text, '"', 1);
1164 if (statement->outputs == NULL &&
1165 statement->inputs == NULL &&
1166 statement->clobbers == NULL)
1167 goto end_of_print_asm_statement;
1170 print_asm_arguments(statement->outputs);
1171 if (statement->inputs == NULL && statement->clobbers == NULL)
1172 goto end_of_print_asm_statement;
1175 print_asm_arguments(statement->inputs);
1176 if (statement->clobbers == NULL)
1177 goto end_of_print_asm_statement;
1180 print_asm_clobbers(statement->clobbers);
1182 end_of_print_asm_statement:
1187 * Print a microsoft __try statement.
1189 * @param statement the statement
1191 static void print_ms_try_statement(const ms_try_statement_t *statement)
1193 fputs("__try ", out);
1194 print_statement(statement->try_statement);
1196 if (statement->except_expression != NULL) {
1197 fputs("__except(", out);
1198 print_expression(statement->except_expression);
1201 fputs("__finally ", out);
1203 print_statement(statement->final_statement);
1207 * Print a microsoft __leave statement.
1209 * @param statement the statement
1211 static void print_leave_statement(const leave_statement_t *statement)
1214 fputs("__leave;\n", out);
1218 * Print a statement.
1220 * @param statement the statement
1222 void print_statement(const statement_t *statement)
1224 switch (statement->kind) {
1225 case STATEMENT_EMPTY:
1228 case STATEMENT_COMPOUND:
1229 print_compound_statement(&statement->compound);
1231 case STATEMENT_RETURN:
1232 print_return_statement(&statement->returns);
1234 case STATEMENT_EXPRESSION:
1235 print_expression_statement(&statement->expression);
1237 case STATEMENT_LABEL:
1238 print_label_statement(&statement->label);
1240 case STATEMENT_GOTO:
1241 print_goto_statement(&statement->gotos);
1243 case STATEMENT_CONTINUE:
1244 fputs("continue;\n", out);
1246 case STATEMENT_BREAK:
1247 fputs("break;\n", out);
1250 print_if_statement(&statement->ifs);
1252 case STATEMENT_SWITCH:
1253 print_switch_statement(&statement->switchs);
1255 case STATEMENT_CASE_LABEL:
1256 print_case_label(&statement->case_label);
1258 case STATEMENT_DECLARATION:
1259 print_declaration_statement(&statement->declaration);
1261 case STATEMENT_WHILE:
1262 print_while_statement(&statement->whiles);
1264 case STATEMENT_DO_WHILE:
1265 print_do_while_statement(&statement->do_while);
1268 print_for_statement(&statement->fors);
1271 print_asm_statement(&statement->asms);
1273 case STATEMENT_MS_TRY:
1274 print_ms_try_statement(&statement->ms_try);
1276 case STATEMENT_LEAVE:
1277 print_leave_statement(&statement->leave);
1279 case STATEMENT_INVALID:
1280 fputs("$invalid statement$\n", out);
1286 * Print a storage class.
1288 * @param storage_class the storage class
1290 static void print_storage_class(storage_class_tag_t storage_class)
1292 switch (storage_class) {
1293 case STORAGE_CLASS_NONE: return;
1294 case STORAGE_CLASS_TYPEDEF: fputs("typedef ", out); return;
1295 case STORAGE_CLASS_EXTERN: fputs("extern ", out); return;
1296 case STORAGE_CLASS_STATIC: fputs("static ", out); return;
1297 case STORAGE_CLASS_AUTO: fputs("auto ", out); return;
1298 case STORAGE_CLASS_REGISTER: fputs("register ", out); return;
1300 panic("invalid storage class");
1304 * Print an initializer.
1306 * @param initializer the initializer
1308 void print_initializer(const initializer_t *initializer)
1310 if (initializer == NULL) {
1315 switch (initializer->kind) {
1316 case INITIALIZER_VALUE: {
1317 const initializer_value_t *value = &initializer->value;
1318 print_assignment_expression(value->value);
1321 case INITIALIZER_LIST: {
1322 assert(initializer->kind == INITIALIZER_LIST);
1324 const initializer_list_t *list = &initializer->list;
1326 for (size_t i = 0 ; i < list->len; ++i) {
1327 const initializer_t *sub_init = list->initializers[i];
1328 print_initializer(list->initializers[i]);
1329 if (i < list->len-1) {
1330 if (sub_init == NULL || sub_init->kind != INITIALIZER_DESIGNATOR)
1337 case INITIALIZER_STRING:
1338 print_quoted_string(&initializer->string.string, '"', 1);
1340 case INITIALIZER_WIDE_STRING:
1341 print_quoted_wide_string(&initializer->wide_string.string, '"', 1);
1343 case INITIALIZER_DESIGNATOR:
1344 print_designator(initializer->designator.designator);
1349 panic("invalid initializer kind found");
1354 * Print microsoft extended declaration modifiers.
1356 static void print_ms_modifiers(const declaration_t *declaration)
1358 if ((c_mode & _MS) == 0)
1361 decl_modifiers_t modifiers = declaration->modifiers;
1363 bool ds_shown = false;
1364 const char *next = "(";
1366 if (declaration->base.kind == ENTITY_VARIABLE) {
1367 variable_t *variable = (variable_t*)declaration;
1368 if (variable->alignment != 0
1369 || variable->get_property_sym != NULL
1370 || variable->put_property_sym != NULL) {
1372 fputs("__declspec", out);
1376 if (variable->alignment != 0) {
1377 fputs(next, out); next = ", "; fprintf(out, "align(%u)", variable->alignment);
1379 if (variable->get_property_sym != NULL
1380 || variable->put_property_sym != NULL) {
1382 fputs(next, out); next = ", "; fputs("property(", out);
1383 if (variable->get_property_sym != NULL) {
1384 fprintf(out, "get=%s", variable->get_property_sym->string);
1387 if (variable->put_property_sym != NULL)
1388 fprintf(out, "%sput=%s", comma, variable->put_property_sym->string);
1394 /* DM_FORCEINLINE handled outside. */
1395 if ((modifiers & ~DM_FORCEINLINE) != 0) {
1397 fputs("__declspec", out);
1400 if (modifiers & DM_DLLIMPORT) {
1401 fputs(next, out); next = ", "; fputs("dllimport", out);
1403 if (modifiers & DM_DLLEXPORT) {
1404 fputs(next, out); next = ", "; fputs("dllexport", out);
1406 if (modifiers & DM_THREAD) {
1407 fputs(next, out); next = ", "; fputs("thread", out);
1409 if (modifiers & DM_NAKED) {
1410 fputs(next, out); next = ", "; fputs("naked", out);
1412 if (modifiers & DM_THREAD) {
1413 fputs(next, out); next = ", "; fputs("thread", out);
1415 if (modifiers & DM_SELECTANY) {
1416 fputs(next, out); next = ", "; fputs("selectany", out);
1418 if (modifiers & DM_NOTHROW) {
1419 fputs(next, out); next = ", "; fputs("nothrow", out);
1421 if (modifiers & DM_NORETURN) {
1422 fputs(next, out); next = ", "; fputs("noreturn", out);
1424 if (modifiers & DM_NOINLINE) {
1425 fputs(next, out); next = ", "; fputs("noinline", out);
1427 if (modifiers & DM_DEPRECATED) {
1428 fputs(next, out); next = ", "; fputs("deprecated", out);
1429 if (declaration->deprecated_string != NULL)
1430 fprintf(out, "(\"%s\")",
1431 declaration->deprecated_string);
1433 if (modifiers & DM_RESTRICT) {
1434 fputs(next, out); next = ", "; fputs("restrict", out);
1436 if (modifiers & DM_NOALIAS) {
1437 fputs(next, out); next = ", "; fputs("noalias", out);
1446 static void print_scope(const scope_t *scope)
1448 const entity_t *entity = scope->entities;
1449 for ( ; entity != NULL; entity = entity->base.next) {
1451 print_entity(entity);
1456 static void print_namespace(const namespace_t *namespace)
1458 fputs("namespace ", out);
1459 if (namespace->base.symbol != NULL) {
1460 fputs(namespace->base.symbol->string, out);
1467 print_scope(&namespace->members);
1475 * Print a variable or function declaration
1477 void print_declaration(const entity_t *entity)
1479 assert(is_declaration(entity));
1480 const declaration_t *declaration = &entity->declaration;
1482 print_storage_class((storage_class_tag_t)declaration->declared_storage_class);
1483 if (entity->kind == ENTITY_FUNCTION) {
1484 function_t *function = (function_t*)declaration;
1485 if (function->is_inline) {
1486 if (declaration->modifiers & DM_FORCEINLINE) {
1487 fputs("__forceinline ", out);
1488 } else if (declaration->modifiers & DM_MICROSOFT_INLINE) {
1489 fputs("__inline ", out);
1491 fputs("inline ", out);
1495 //print_ms_modifiers(declaration);
1496 switch (entity->kind) {
1497 case ENTITY_FUNCTION:
1498 print_type_ext(entity->declaration.type, entity->base.symbol,
1499 &entity->function.parameters);
1501 if (entity->function.statement != NULL) {
1504 print_statement(entity->function.statement);
1509 case ENTITY_VARIABLE:
1510 if (entity->variable.thread_local)
1511 fputs("__thread ", out);
1512 print_type_ext(declaration->type, declaration->base.symbol, NULL);
1513 if (entity->variable.initializer != NULL) {
1515 print_initializer(entity->variable.initializer);
1520 print_type_ext(declaration->type, declaration->base.symbol, NULL);
1527 * Prints an expression.
1529 * @param expression the expression
1531 void print_expression(const expression_t *expression)
1533 print_expression_prec(expression, PREC_BOTTOM);
1537 * Print a declaration.
1539 * @param declaration the declaration
1541 void print_entity(const entity_t *entity)
1543 if (entity->base.namespc != NAMESPACE_NORMAL && entity->base.symbol == NULL)
1546 switch ((entity_kind_tag_t)entity->kind) {
1547 case ENTITY_VARIABLE:
1548 case ENTITY_PARAMETER:
1549 case ENTITY_COMPOUND_MEMBER:
1550 case ENTITY_FUNCTION:
1551 print_declaration(entity);
1553 case ENTITY_TYPEDEF:
1554 print_typedef(entity);
1557 fputs("struct ", out);
1558 fputs(entity->base.symbol->string, out);
1559 if (entity->structe.complete) {
1561 print_compound_definition(&entity->structe);
1566 fputs("union ", out);
1567 fputs(entity->base.symbol->string, out);
1568 if (entity->unione.complete) {
1570 print_compound_definition(&entity->unione);
1575 fputs("enum ", out);
1576 fputs(entity->base.symbol->string, out);
1578 print_enum_definition(&entity->enume);
1581 case ENTITY_NAMESPACE:
1582 print_namespace(&entity->namespacee);
1584 case ENTITY_LOCAL_LABEL:
1585 fprintf(out, "__label__ %s;", entity->base.symbol->string);
1588 case ENTITY_ENUM_VALUE:
1589 panic("print_entity used on unexpected entity type");
1590 case ENTITY_INVALID:
1593 panic("Invalid entity type encountered");
1597 * Print the AST of a translation unit.
1599 * @param unit the translation unit
1601 void print_ast(const translation_unit_t *unit)
1603 entity_t *entity = unit->scope.entities;
1604 for ( ; entity != NULL; entity = entity->base.next) {
1605 if (entity->kind == ENTITY_ENUM_VALUE)
1607 if (entity->base.namespc != NAMESPACE_NORMAL
1608 && entity->base.symbol == NULL)
1610 if (is_generated_entity(entity))
1614 print_entity(entity);
1619 bool is_constant_initializer(const initializer_t *initializer)
1621 switch (initializer->kind) {
1622 case INITIALIZER_STRING:
1623 case INITIALIZER_WIDE_STRING:
1624 case INITIALIZER_DESIGNATOR:
1627 case INITIALIZER_VALUE:
1628 return is_constant_expression(initializer->value.value);
1630 case INITIALIZER_LIST:
1631 for (size_t i = 0; i < initializer->list.len; ++i) {
1632 initializer_t *sub_initializer = initializer->list.initializers[i];
1633 if (!is_constant_initializer(sub_initializer))
1638 panic("invalid initializer kind found");
1641 static bool is_object_with_linker_constant_address(const expression_t *expression)
1643 switch (expression->kind) {
1644 case EXPR_UNARY_DEREFERENCE:
1645 return is_address_constant(expression->unary.value);
1648 type_t *base_type = skip_typeref(expression->select.compound->base.type);
1649 if (is_type_pointer(base_type)) {
1651 return is_address_constant(expression->select.compound);
1653 return is_object_with_linker_constant_address(expression->select.compound);
1657 case EXPR_ARRAY_ACCESS:
1658 return is_constant_expression(expression->array_access.index)
1659 && is_address_constant(expression->array_access.array_ref);
1661 case EXPR_REFERENCE: {
1662 entity_t *entity = expression->reference.entity;
1663 if (is_declaration(entity)) {
1664 switch ((storage_class_tag_t)entity->declaration.storage_class) {
1665 case STORAGE_CLASS_NONE:
1666 case STORAGE_CLASS_EXTERN:
1667 case STORAGE_CLASS_STATIC:
1669 entity->kind != ENTITY_VARIABLE ||
1670 !entity->variable.thread_local;
1672 case STORAGE_CLASS_REGISTER:
1673 case STORAGE_CLASS_TYPEDEF:
1674 case STORAGE_CLASS_AUTO:
1686 bool is_address_constant(const expression_t *expression)
1688 switch (expression->kind) {
1689 case EXPR_STRING_LITERAL:
1690 case EXPR_WIDE_STRING_LITERAL:
1692 case EXPR_LABEL_ADDRESS:
1695 case EXPR_UNARY_TAKE_ADDRESS:
1696 return is_object_with_linker_constant_address(expression->unary.value);
1698 case EXPR_UNARY_DEREFERENCE: {
1700 = revert_automatic_type_conversion(expression->unary.value);
1701 /* dereferencing a function is a NOP */
1702 if (is_type_function(real_type)) {
1703 return is_address_constant(expression->unary.value);
1708 case EXPR_UNARY_CAST: {
1709 type_t *dest = skip_typeref(expression->base.type);
1710 if (!is_type_pointer(dest) && (
1711 dest->kind != TYPE_ATOMIC ||
1712 !(get_atomic_type_flags(dest->atomic.akind) & ATOMIC_TYPE_FLAG_INTEGER) ||
1713 get_atomic_type_size(dest->atomic.akind) < get_atomic_type_size(get_intptr_kind())
1717 return (is_constant_expression(expression->unary.value)
1718 || is_address_constant(expression->unary.value));
1721 case EXPR_BINARY_ADD:
1722 case EXPR_BINARY_SUB: {
1723 expression_t *left = expression->binary.left;
1724 expression_t *right = expression->binary.right;
1726 if (is_type_pointer(skip_typeref(left->base.type))) {
1727 return is_address_constant(left) && is_constant_expression(right);
1728 } else if (is_type_pointer(skip_typeref(right->base.type))) {
1729 return is_constant_expression(left) && is_address_constant(right);
1735 case EXPR_REFERENCE: {
1736 entity_t *entity = expression->reference.entity;
1737 if (!is_declaration(entity))
1740 type_t *type = skip_typeref(entity->declaration.type);
1741 if (is_type_function(type))
1743 if (is_type_array(type)) {
1744 return is_object_with_linker_constant_address(expression);
1746 /* Prevent stray errors */
1747 if (!is_type_valid(type))
1752 case EXPR_ARRAY_ACCESS: {
1753 type_t *const type =
1754 skip_typeref(revert_automatic_type_conversion(expression));
1756 is_type_array(type) &&
1757 is_constant_expression(expression->array_access.index) &&
1758 is_address_constant(expression->array_access.array_ref);
1767 * Check if the given expression is a call to a builtin function
1768 * returning a constant result.
1770 static bool is_builtin_const_call(const expression_t *expression)
1772 expression_t *function = expression->call.function;
1773 if (function->kind != EXPR_REFERENCE)
1775 reference_expression_t *ref = &function->reference;
1776 if (ref->entity->kind != ENTITY_FUNCTION)
1779 switch (ref->entity->function.btk) {
1780 case bk_gnu_builtin_huge_val:
1781 case bk_gnu_builtin_inf:
1782 case bk_gnu_builtin_inff:
1783 case bk_gnu_builtin_infl:
1784 case bk_gnu_builtin_nan:
1785 case bk_gnu_builtin_nanf:
1786 case bk_gnu_builtin_nanl:
1794 static bool is_constant_pointer(const expression_t *expression)
1796 if (is_constant_expression(expression))
1799 switch (expression->kind) {
1800 case EXPR_UNARY_CAST:
1801 return is_constant_pointer(expression->unary.value);
1807 static bool is_object_with_constant_address(const expression_t *expression)
1809 switch (expression->kind) {
1811 expression_t *compound = expression->select.compound;
1812 type_t *compound_type = compound->base.type;
1813 compound_type = skip_typeref(compound_type);
1814 if (is_type_pointer(compound_type)) {
1815 return is_constant_pointer(compound);
1817 return is_object_with_constant_address(compound);
1821 case EXPR_ARRAY_ACCESS: {
1822 array_access_expression_t const* const array_access =
1823 &expression->array_access;
1825 is_constant_expression(array_access->index) && (
1826 is_object_with_constant_address(array_access->array_ref) ||
1827 is_constant_pointer(array_access->array_ref)
1831 case EXPR_UNARY_DEREFERENCE:
1832 return is_constant_pointer(expression->unary.value);
1838 bool is_constant_expression(const expression_t *expression)
1840 switch (expression->kind) {
1843 case EXPR_CHARACTER_CONSTANT:
1844 case EXPR_WIDE_CHARACTER_CONSTANT:
1845 case EXPR_CLASSIFY_TYPE:
1848 case EXPR_BUILTIN_CONSTANT_P:
1849 case EXPR_BUILTIN_TYPES_COMPATIBLE_P:
1850 case EXPR_REFERENCE_ENUM_VALUE:
1854 type_t *const type = skip_typeref(expression->typeprop.type);
1855 return !is_type_array(type) || !type->array.is_vla;
1858 case EXPR_STRING_LITERAL:
1859 case EXPR_WIDE_STRING_LITERAL:
1861 case EXPR_LABEL_ADDRESS:
1866 case EXPR_STATEMENT:
1867 case EXPR_REFERENCE:
1868 case EXPR_UNARY_POSTFIX_INCREMENT:
1869 case EXPR_UNARY_POSTFIX_DECREMENT:
1870 case EXPR_UNARY_PREFIX_INCREMENT:
1871 case EXPR_UNARY_PREFIX_DECREMENT:
1872 case EXPR_UNARY_ASSUME: /* has VOID type */
1873 case EXPR_UNARY_DEREFERENCE:
1874 case EXPR_UNARY_DELETE:
1875 case EXPR_UNARY_DELETE_ARRAY:
1876 case EXPR_UNARY_THROW:
1877 case EXPR_BINARY_ASSIGN:
1878 case EXPR_BINARY_MUL_ASSIGN:
1879 case EXPR_BINARY_DIV_ASSIGN:
1880 case EXPR_BINARY_MOD_ASSIGN:
1881 case EXPR_BINARY_ADD_ASSIGN:
1882 case EXPR_BINARY_SUB_ASSIGN:
1883 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
1884 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
1885 case EXPR_BINARY_BITWISE_AND_ASSIGN:
1886 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
1887 case EXPR_BINARY_BITWISE_OR_ASSIGN:
1888 case EXPR_BINARY_COMMA:
1889 case EXPR_ARRAY_ACCESS:
1892 case EXPR_UNARY_TAKE_ADDRESS:
1893 return is_object_with_constant_address(expression->unary.value);
1896 return is_builtin_const_call(expression);
1898 case EXPR_UNARY_NEGATE:
1899 case EXPR_UNARY_PLUS:
1900 case EXPR_UNARY_BITWISE_NEGATE:
1901 case EXPR_UNARY_NOT:
1902 return is_constant_expression(expression->unary.value);
1904 case EXPR_UNARY_CAST:
1905 case EXPR_UNARY_CAST_IMPLICIT:
1906 return is_type_arithmetic(skip_typeref(expression->base.type))
1907 && is_constant_expression(expression->unary.value);
1909 case EXPR_BINARY_ADD:
1910 case EXPR_BINARY_SUB:
1911 case EXPR_BINARY_MUL:
1912 case EXPR_BINARY_DIV:
1913 case EXPR_BINARY_MOD:
1914 case EXPR_BINARY_EQUAL:
1915 case EXPR_BINARY_NOTEQUAL:
1916 case EXPR_BINARY_LESS:
1917 case EXPR_BINARY_LESSEQUAL:
1918 case EXPR_BINARY_GREATER:
1919 case EXPR_BINARY_GREATEREQUAL:
1920 case EXPR_BINARY_BITWISE_AND:
1921 case EXPR_BINARY_BITWISE_OR:
1922 case EXPR_BINARY_BITWISE_XOR:
1923 case EXPR_BINARY_SHIFTLEFT:
1924 case EXPR_BINARY_SHIFTRIGHT:
1925 case EXPR_BINARY_ISGREATER:
1926 case EXPR_BINARY_ISGREATEREQUAL:
1927 case EXPR_BINARY_ISLESS:
1928 case EXPR_BINARY_ISLESSEQUAL:
1929 case EXPR_BINARY_ISLESSGREATER:
1930 case EXPR_BINARY_ISUNORDERED:
1931 return is_constant_expression(expression->binary.left)
1932 && is_constant_expression(expression->binary.right);
1934 case EXPR_BINARY_LOGICAL_AND: {
1935 expression_t const *const left = expression->binary.left;
1936 if (!is_constant_expression(left))
1938 if (fold_constant_to_bool(left) == false)
1940 return is_constant_expression(expression->binary.right);
1943 case EXPR_BINARY_LOGICAL_OR: {
1944 expression_t const *const left = expression->binary.left;
1945 if (!is_constant_expression(left))
1947 if (fold_constant_to_bool(left) == true)
1949 return is_constant_expression(expression->binary.right);
1952 case EXPR_COMPOUND_LITERAL:
1953 return is_constant_initializer(expression->compound_literal.initializer);
1955 case EXPR_CONDITIONAL: {
1956 expression_t *condition = expression->conditional.condition;
1957 if (!is_constant_expression(condition))
1960 if (fold_constant_to_bool(condition) == true) {
1961 expression_t const *const t = expression->conditional.true_expression;
1962 return t == NULL || is_constant_expression(t);
1964 return is_constant_expression(expression->conditional.false_expression);
1974 panic("invalid expression found (is constant expression)");
1978 * Initialize the AST construction.
1982 obstack_init(&ast_obstack);
1990 obstack_free(&ast_obstack, NULL);
1994 * Set the output stream for the AST printer.
1996 * @param stream the output stream
1998 void ast_set_output(FILE *stream)
2001 type_set_output(stream);
2005 * Allocate an AST object of the given size.
2007 * @param size the size of the object to allocate
2009 * @return A new allocated object in the AST memeory space.
2011 void *(allocate_ast)(size_t size)
2013 return _allocate_ast(size);