11 #include "adt/error.h"
13 struct obstack ast_obstack;
17 static int print_implicit_casts = 1;
19 static void print_statement(const statement_t *statement);
21 void change_indent(int delta)
27 void print_indent(void)
29 for(int i = 0; i < indent; ++i)
33 static void print_const(const const_expression_t *cnst)
35 if(cnst->expression.datatype == NULL)
38 if(is_type_integer(cnst->expression.datatype)) {
39 fprintf(out, "%lld", cnst->v.int_value);
40 } else if(is_type_floating(cnst->expression.datatype)) {
41 fprintf(out, "%Lf", cnst->v.float_value);
45 static void print_quoted_string(const string_t *const string)
48 for (const char *c = string->begin, *const end = c + string->size; c != end; ++c) {
50 case '\"': fputs("\\\"", out); break;
51 case '\\': fputs("\\\\", out); break;
52 case '\a': fputs("\\a", out); break;
53 case '\b': fputs("\\b", out); break;
54 case '\f': fputs("\\f", out); break;
55 case '\n': fputs("\\n", out); break;
56 case '\r': fputs("\\r", out); break;
57 case '\t': fputs("\\t", out); break;
58 case '\v': fputs("\\v", out); break;
59 case '\?': fputs("\\?", out); break;
62 fprintf(out, "\\%03o", *c);
72 static void print_string_literal(
73 const string_literal_expression_t *string_literal)
75 print_quoted_string(&string_literal->value);
78 static void print_wide_string_literal(
79 const wide_string_literal_expression_t *const wstr)
82 for (const wchar_rep_t *c = wstr->value.begin,
83 *end = c + wstr->value.size;
86 case L'\"': fputs("\\\"", out); break;
87 case L'\\': fputs("\\\\", out); break;
88 case L'\a': fputs("\\a", out); break;
89 case L'\b': fputs("\\b", out); break;
90 case L'\f': fputs("\\f", out); break;
91 case L'\n': fputs("\\n", out); break;
92 case L'\r': fputs("\\r", out); break;
93 case L'\t': fputs("\\t", out); break;
94 case L'\v': fputs("\\v", out); break;
95 case L'\?': fputs("\\?", out); break;
97 const unsigned tc = *c;
100 fprintf(out, "\\%03o", (char)*c);
104 } else if (tc < 0x800) {
105 fputc(0xC0 | (tc >> 6), out);
106 fputc(0x80 | (tc & 0x3F), out);
107 } else if (tc < 0x10000) {
108 fputc(0xE0 | ( tc >> 12), out);
109 fputc(0x80 | ((tc >> 6) & 0x3F), out);
110 fputc(0x80 | ( tc & 0x3F), out);
112 fputc(0xF0 | ( tc >> 18), out);
113 fputc(0x80 | ((tc >> 12) & 0x3F), out);
114 fputc(0x80 | ((tc >> 6) & 0x3F), out);
115 fputc(0x80 | ( tc & 0x3F), out);
123 static void print_call_expression(const call_expression_t *call)
125 print_expression(call->function);
127 call_argument_t *argument = call->arguments;
129 while(argument != NULL) {
135 print_expression(argument->expression);
137 argument = argument->next;
142 static void print_binary_expression(const binary_expression_t *binexpr)
144 if(binexpr->expression.kind == EXPR_BINARY_BUILTIN_EXPECT) {
145 fputs("__builtin_expect(", out);
146 print_expression(binexpr->left);
148 print_expression(binexpr->right);
154 print_expression(binexpr->left);
156 switch(binexpr->expression.kind) {
157 case EXPR_BINARY_COMMA: fputs(",", out); break;
158 case EXPR_BINARY_ASSIGN: fputs("=", out); break;
159 case EXPR_BINARY_ADD: fputs("+", out); break;
160 case EXPR_BINARY_SUB: fputs("-", out); break;
161 case EXPR_BINARY_MUL: fputs("*", out); break;
162 case EXPR_BINARY_MOD: fputs("%", out); break;
163 case EXPR_BINARY_DIV: fputs("/", out); break;
164 case EXPR_BINARY_BITWISE_OR: fputs("|", out); break;
165 case EXPR_BINARY_BITWISE_AND: fputs("&", out); break;
166 case EXPR_BINARY_BITWISE_XOR: fputs("^", out); break;
167 case EXPR_BINARY_LOGICAL_OR: fputs("||", out); break;
168 case EXPR_BINARY_LOGICAL_AND: fputs("&&", out); break;
169 case EXPR_BINARY_NOTEQUAL: fputs("!=", out); break;
170 case EXPR_BINARY_EQUAL: fputs("==", out); break;
171 case EXPR_BINARY_LESS: fputs("<", out); break;
172 case EXPR_BINARY_LESSEQUAL: fputs("<=", out); break;
173 case EXPR_BINARY_GREATER: fputs(">", out); break;
174 case EXPR_BINARY_GREATEREQUAL: fputs(">=", out); break;
175 case EXPR_BINARY_SHIFTLEFT: fputs("<<", out); break;
176 case EXPR_BINARY_SHIFTRIGHT: fputs(">>", out); break;
178 case EXPR_BINARY_ADD_ASSIGN: fputs("+=", out); break;
179 case EXPR_BINARY_SUB_ASSIGN: fputs("-=", out); break;
180 case EXPR_BINARY_MUL_ASSIGN: fputs("*=", out); break;
181 case EXPR_BINARY_MOD_ASSIGN: fputs("%=", out); break;
182 case EXPR_BINARY_DIV_ASSIGN: fputs("/=", out); break;
183 case EXPR_BINARY_BITWISE_OR_ASSIGN: fputs("|=", out); break;
184 case EXPR_BINARY_BITWISE_AND_ASSIGN: fputs("&=", out); break;
185 case EXPR_BINARY_BITWISE_XOR_ASSIGN: fputs("^=", out); break;
186 case EXPR_BINARY_SHIFTLEFT_ASSIGN: fputs("<<=", out); break;
187 case EXPR_BINARY_SHIFTRIGHT_ASSIGN: fputs(">>=", out); break;
188 default: panic("invalid binexpression found");
191 print_expression(binexpr->right);
195 static void print_unary_expression(const unary_expression_t *unexpr)
197 switch(unexpr->expression.kind) {
198 case EXPR_UNARY_NEGATE: fputs("-", out); break;
199 case EXPR_UNARY_PLUS: fputs("+", out); break;
200 case EXPR_UNARY_NOT: fputs("!", out); break;
201 case EXPR_UNARY_BITWISE_NEGATE: fputs("~", out); break;
202 case EXPR_UNARY_PREFIX_INCREMENT: fputs("++", out); break;
203 case EXPR_UNARY_PREFIX_DECREMENT: fputs("--", out); break;
204 case EXPR_UNARY_DEREFERENCE: fputs("*", out); break;
205 case EXPR_UNARY_TAKE_ADDRESS: fputs("&", out); break;
207 case EXPR_UNARY_BITFIELD_EXTRACT:
208 print_expression(unexpr->value);
211 case EXPR_UNARY_POSTFIX_INCREMENT:
213 print_expression(unexpr->value);
217 case EXPR_UNARY_POSTFIX_DECREMENT:
219 print_expression(unexpr->value);
223 case EXPR_UNARY_CAST_IMPLICIT:
224 if(!print_implicit_casts) {
225 print_expression(unexpr->value);
229 case EXPR_UNARY_CAST:
231 print_type(unexpr->expression.datatype);
234 case EXPR_UNARY_ASSUME:
235 fputs("__assume", out);
238 panic("invalid unary expression found");
241 print_expression(unexpr->value);
245 static void print_reference_expression(const reference_expression_t *ref)
247 fprintf(out, "%s", ref->declaration->symbol->string);
250 static void print_array_expression(const array_access_expression_t *expression)
252 if(!expression->flipped) {
254 print_expression(expression->array_ref);
256 print_expression(expression->index);
260 print_expression(expression->index);
262 print_expression(expression->array_ref);
267 static void print_sizeof_expression(const sizeof_expression_t *expression)
269 fputs("sizeof", out);
270 if(expression->size_expression != NULL) {
272 print_expression(expression->size_expression);
276 print_type(expression->type);
281 static void print_alignof_expression(const alignof_expression_t *expression)
283 fputs("__alignof__(", out);
284 print_type(expression->type);
288 static void print_builtin_symbol(const builtin_symbol_expression_t *expression)
290 fputs(expression->symbol->string, out);
293 static void print_builtin_constant(const builtin_constant_expression_t *expression)
295 fputs("__builtin_constant_p(", out);
296 print_expression(expression->value);
300 static void print_builtin_prefetch(const builtin_prefetch_expression_t *expression)
302 fputs("__builtin_prefetch(", out);
303 print_expression(expression->adr);
304 if (expression->rw) {
306 print_expression(expression->rw);
308 if (expression->locality) {
310 print_expression(expression->locality);
315 static void print_conditional(const conditional_expression_t *expression)
318 print_expression(expression->condition);
320 print_expression(expression->true_expression);
322 print_expression(expression->false_expression);
326 static void print_va_start(const va_start_expression_t *const expression)
328 fputs("__builtin_va_start(", out);
329 print_expression(expression->ap);
331 fputs(expression->parameter->symbol->string, out);
335 static void print_va_arg(const va_arg_expression_t *expression)
337 fputs("__builtin_va_arg(", out);
338 print_expression(expression->ap);
340 print_type(expression->expression.datatype);
344 static void print_select(const select_expression_t *expression)
346 print_expression(expression->compound);
347 if(expression->compound->base.datatype == NULL ||
348 expression->compound->base.datatype->kind == TYPE_POINTER) {
353 fputs(expression->symbol->string, out);
356 static void print_classify_type_expression(
357 const classify_type_expression_t *const expr)
359 fputs("__builtin_classify_type(", out);
360 print_expression(expr->type_expression);
364 static void print_designator(const designator_t *designator)
366 fputs(designator->symbol->string, out);
367 for (designator = designator->next; designator != NULL; designator = designator->next) {
368 if (designator->array_access) {
370 print_expression(designator->array_access);
374 fputs(designator->symbol->string, out);
379 static void print_offsetof_expression(const offsetof_expression_t *expression)
381 fputs("__builtin_offsetof", out);
383 print_type(expression->type);
385 print_designator(expression->designator);
389 static void print_statement_expression(const statement_expression_t *expression)
392 print_statement(expression->statement);
396 void print_expression(const expression_t *expression)
398 switch(expression->kind) {
401 fprintf(out, "*invalid expression*");
404 print_const(&expression->conste);
407 case EXPR_PRETTY_FUNCTION:
408 case EXPR_STRING_LITERAL:
409 print_string_literal(&expression->string);
411 case EXPR_WIDE_STRING_LITERAL:
412 print_wide_string_literal(&expression->wide_string);
415 print_call_expression(&expression->call);
418 print_binary_expression(&expression->binary);
421 print_reference_expression(&expression->reference);
423 case EXPR_ARRAY_ACCESS:
424 print_array_expression(&expression->array_access);
427 print_unary_expression(&expression->unary);
430 print_sizeof_expression(&expression->sizeofe);
433 print_alignof_expression(&expression->alignofe);
435 case EXPR_BUILTIN_SYMBOL:
436 print_builtin_symbol(&expression->builtin_symbol);
438 case EXPR_BUILTIN_CONSTANT_P:
439 print_builtin_constant(&expression->builtin_constant);
441 case EXPR_BUILTIN_PREFETCH:
442 print_builtin_prefetch(&expression->builtin_prefetch);
444 case EXPR_CONDITIONAL:
445 print_conditional(&expression->conditional);
448 print_va_start(&expression->va_starte);
451 print_va_arg(&expression->va_arge);
454 print_select(&expression->select);
456 case EXPR_CLASSIFY_TYPE:
457 print_classify_type_expression(&expression->classify_type);
460 print_offsetof_expression(&expression->offsetofe);
463 print_statement_expression(&expression->statement);
468 fprintf(out, "some expression of type %d", (int) expression->kind);
473 static void print_compound_statement(const compound_statement_t *block)
478 statement_t *statement = block->statements;
479 while(statement != NULL) {
481 print_statement(statement);
483 statement = statement->base.next;
490 static void print_return_statement(const return_statement_t *statement)
492 fprintf(out, "return ");
493 if(statement->return_value != NULL)
494 print_expression(statement->return_value);
498 static void print_expression_statement(const expression_statement_t *statement)
500 print_expression(statement->expression);
504 static void print_goto_statement(const goto_statement_t *statement)
506 fprintf(out, "goto ");
507 fputs(statement->label->symbol->string, out);
508 fprintf(stderr, "(%p)", (void*) statement->label);
512 static void print_label_statement(const label_statement_t *statement)
514 fprintf(stderr, "(%p)", (void*) statement->label);
515 fprintf(out, "%s:\n", statement->label->symbol->string);
516 if(statement->label_statement != NULL) {
517 print_statement(statement->label_statement);
521 static void print_if_statement(const if_statement_t *statement)
524 print_expression(statement->condition);
526 if(statement->true_statement != NULL) {
527 print_statement(statement->true_statement);
530 if(statement->false_statement != NULL) {
533 print_statement(statement->false_statement);
537 static void print_switch_statement(const switch_statement_t *statement)
539 fputs("switch(", out);
540 print_expression(statement->expression);
542 print_statement(statement->body);
545 static void print_case_label(const case_label_statement_t *statement)
547 if(statement->expression == NULL) {
548 fputs("default:\n", out);
551 print_expression(statement->expression);
554 print_statement(statement->label_statement);
557 static void print_declaration_statement(
558 const declaration_statement_t *statement)
561 declaration_t *declaration = statement->declarations_begin;
562 for( ; declaration != statement->declarations_end->next;
563 declaration = declaration->next) {
569 print_declaration(declaration);
574 static void print_while_statement(const while_statement_t *statement)
576 fputs("while(", out);
577 print_expression(statement->condition);
579 print_statement(statement->body);
582 static void print_do_while_statement(const do_while_statement_t *statement)
585 print_statement(statement->body);
587 fputs("while(", out);
588 print_expression(statement->condition);
592 static void print_for_statement(const for_statement_t *statement)
595 if(statement->context.declarations != NULL) {
596 assert(statement->initialisation == NULL);
597 print_declaration(statement->context.declarations);
598 if(statement->context.declarations->next != NULL) {
599 panic("multiple declarations in for statement not supported yet");
603 if(statement->initialisation) {
604 print_expression(statement->initialisation);
608 if(statement->condition != NULL) {
609 print_expression(statement->condition);
612 if(statement->step != NULL) {
613 print_expression(statement->step);
616 print_statement(statement->body);
619 static void print_asm_constraints(asm_constraint_t *constraints)
621 asm_constraint_t *constraint = constraints;
622 for( ; constraint != NULL; constraint = constraint->next) {
623 if(constraint != constraints)
626 if(constraint->symbol) {
627 fprintf(out, "[%s] ", constraint->symbol->string);
629 print_quoted_string(&constraint->constraints);
631 print_expression(constraint->expression);
636 static void print_asm_clobbers(asm_clobber_t *clobbers)
638 asm_clobber_t *clobber = clobbers;
639 for( ; clobber != NULL; clobber = clobber->next) {
640 if(clobber != clobbers)
643 print_quoted_string(&clobber->clobber);
647 static void print_asm_statement(const asm_statement_t *statement)
650 if(statement->is_volatile) {
651 fputs("volatile ", out);
654 print_quoted_string(&statement->asm_text);
655 if(statement->inputs == NULL && statement->outputs == NULL
656 && statement->clobbers == NULL)
657 goto end_of_print_asm_statement;
660 print_asm_constraints(statement->inputs);
661 if(statement->outputs == NULL && statement->clobbers == NULL)
662 goto end_of_print_asm_statement;
665 print_asm_constraints(statement->outputs);
666 if(statement->clobbers == NULL)
667 goto end_of_print_asm_statement;
670 print_asm_clobbers(statement->clobbers);
672 end_of_print_asm_statement:
676 void print_statement(const statement_t *statement)
678 switch(statement->kind) {
679 case STATEMENT_COMPOUND:
680 print_compound_statement(&statement->compound);
682 case STATEMENT_RETURN:
683 print_return_statement(&statement->returns);
685 case STATEMENT_EXPRESSION:
686 print_expression_statement(&statement->expression);
688 case STATEMENT_LABEL:
689 print_label_statement(&statement->label);
692 print_goto_statement(&statement->gotos);
694 case STATEMENT_CONTINUE:
695 fputs("continue;\n", out);
697 case STATEMENT_BREAK:
698 fputs("break;\n", out);
701 print_if_statement(&statement->ifs);
703 case STATEMENT_SWITCH:
704 print_switch_statement(&statement->switchs);
706 case STATEMENT_CASE_LABEL:
707 print_case_label(&statement->case_label);
709 case STATEMENT_DECLARATION:
710 print_declaration_statement(&statement->declaration);
712 case STATEMENT_WHILE:
713 print_while_statement(&statement->whiles);
715 case STATEMENT_DO_WHILE:
716 print_do_while_statement(&statement->do_while);
719 print_for_statement(&statement->fors);
722 print_asm_statement(&statement->asms);
724 case STATEMENT_INVALID:
725 fprintf(out, "*invalid statement*");
730 static void print_storage_class(unsigned storage_class)
732 switch((storage_class_tag_t) storage_class) {
733 case STORAGE_CLASS_ENUM_ENTRY:
734 case STORAGE_CLASS_NONE:
736 case STORAGE_CLASS_TYPEDEF: fputs("typedef ", out); break;
737 case STORAGE_CLASS_EXTERN: fputs("extern ", out); break;
738 case STORAGE_CLASS_STATIC: fputs("static ", out); break;
739 case STORAGE_CLASS_AUTO: fputs("auto ", out); break;
740 case STORAGE_CLASS_REGISTER: fputs("register ", out); break;
741 case STORAGE_CLASS_THREAD: fputs("__thread", out); break;
742 case STORAGE_CLASS_THREAD_EXTERN: fputs("extern __thread", out); break;
743 case STORAGE_CLASS_THREAD_STATIC: fputs("static __thread", out); break;
747 void print_initializer(const initializer_t *initializer)
749 if(initializer->kind == INITIALIZER_VALUE) {
750 const initializer_value_t *value = &initializer->value;
751 print_expression(value->value);
755 assert(initializer->kind == INITIALIZER_LIST);
757 const initializer_list_t *list = &initializer->list;
759 for(size_t i = 0 ; i < list->len; ++i) {
763 print_initializer(list->initializers[i]);
768 static void print_normal_declaration(const declaration_t *declaration)
770 print_storage_class(declaration->storage_class);
771 if(declaration->is_inline) {
772 if (declaration->modifiers & DM_FORCEINLINE)
773 fputs("__forceinline ", out);
775 fputs("inline ", out);
777 print_type_ext(declaration->type, declaration->symbol,
778 &declaration->context);
780 if(declaration->type->kind == TYPE_FUNCTION) {
781 if(declaration->init.statement != NULL) {
783 print_statement(declaration->init.statement);
786 } else if(declaration->init.initializer != NULL) {
788 print_initializer(declaration->init.initializer);
793 void print_declaration(const declaration_t *declaration)
795 if(declaration->namespc != NAMESPACE_NORMAL &&
796 declaration->symbol == NULL)
799 switch(declaration->namespc) {
800 case NAMESPACE_NORMAL:
801 print_normal_declaration(declaration);
803 case NAMESPACE_STRUCT:
804 fputs("struct ", out);
805 fputs(declaration->symbol->string, out);
807 print_compound_definition(declaration);
810 case NAMESPACE_UNION:
811 fputs("union ", out);
812 fputs(declaration->symbol->string, out);
814 print_compound_definition(declaration);
819 fputs(declaration->symbol->string, out);
821 print_enum_definition(declaration);
827 void print_ast(const translation_unit_t *unit)
831 declaration_t *declaration = unit->context.declarations;
832 for( ; declaration != NULL; declaration = declaration->next) {
833 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY)
835 if(declaration->namespc != NAMESPACE_NORMAL &&
836 declaration->symbol == NULL)
840 print_declaration(declaration);
845 bool is_constant_expression(const expression_t *expression)
847 switch(expression->kind) {
850 case EXPR_STRING_LITERAL:
851 case EXPR_WIDE_STRING_LITERAL:
853 case EXPR_CLASSIFY_TYPE:
855 case EXPR_PRETTY_FUNCTION:
858 case EXPR_BUILTIN_CONSTANT_P:
861 case EXPR_BUILTIN_SYMBOL:
862 case EXPR_BUILTIN_PREFETCH:
868 case EXPR_UNARY_POSTFIX_INCREMENT:
869 case EXPR_UNARY_POSTFIX_DECREMENT:
870 case EXPR_UNARY_PREFIX_INCREMENT:
871 case EXPR_UNARY_PREFIX_DECREMENT:
872 case EXPR_UNARY_BITFIELD_EXTRACT:
873 case EXPR_UNARY_ASSUME: /* has VOID type */
874 case EXPR_BINARY_ASSIGN:
875 case EXPR_BINARY_MUL_ASSIGN:
876 case EXPR_BINARY_DIV_ASSIGN:
877 case EXPR_BINARY_MOD_ASSIGN:
878 case EXPR_BINARY_ADD_ASSIGN:
879 case EXPR_BINARY_SUB_ASSIGN:
880 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
881 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
882 case EXPR_BINARY_BITWISE_AND_ASSIGN:
883 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
884 case EXPR_BINARY_BITWISE_OR_ASSIGN:
885 case EXPR_BINARY_COMMA:
888 case EXPR_UNARY_NEGATE:
889 case EXPR_UNARY_PLUS:
890 case EXPR_UNARY_BITWISE_NEGATE:
892 case EXPR_UNARY_DEREFERENCE:
893 case EXPR_UNARY_TAKE_ADDRESS:
894 case EXPR_UNARY_CAST:
895 case EXPR_UNARY_CAST_IMPLICIT:
896 return is_constant_expression(expression->unary.value);
898 case EXPR_BINARY_ADD:
899 case EXPR_BINARY_SUB:
900 case EXPR_BINARY_MUL:
901 case EXPR_BINARY_DIV:
902 case EXPR_BINARY_MOD:
903 case EXPR_BINARY_EQUAL:
904 case EXPR_BINARY_NOTEQUAL:
905 case EXPR_BINARY_LESS:
906 case EXPR_BINARY_LESSEQUAL:
907 case EXPR_BINARY_GREATER:
908 case EXPR_BINARY_GREATEREQUAL:
909 case EXPR_BINARY_BITWISE_AND:
910 case EXPR_BINARY_BITWISE_OR:
911 case EXPR_BINARY_BITWISE_XOR:
912 case EXPR_BINARY_LOGICAL_AND:
913 case EXPR_BINARY_LOGICAL_OR:
914 case EXPR_BINARY_SHIFTLEFT:
915 case EXPR_BINARY_SHIFTRIGHT:
916 case EXPR_BINARY_BUILTIN_EXPECT:
917 case EXPR_BINARY_ISGREATER:
918 case EXPR_BINARY_ISGREATEREQUAL:
919 case EXPR_BINARY_ISLESS:
920 case EXPR_BINARY_ISLESSEQUAL:
921 case EXPR_BINARY_ISLESSGREATER:
922 case EXPR_BINARY_ISUNORDERED:
923 return is_constant_expression(expression->binary.left)
924 && is_constant_expression(expression->binary.right);
926 case EXPR_CONDITIONAL:
927 /* TODO: not correct, we only have to test expressions which are
928 * evaluated, which means either the true or false part might be not
930 return is_constant_expression(expression->conditional.condition)
931 && is_constant_expression(expression->conditional.true_expression)
932 && is_constant_expression(expression->conditional.false_expression);
934 case EXPR_ARRAY_ACCESS:
935 return is_constant_expression(expression->array_access.array_ref)
936 && is_constant_expression(expression->array_access.index);
938 case EXPR_REFERENCE: {
939 declaration_t *declaration = expression->reference.declaration;
940 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY)
950 panic("invalid expression found (is constant expression)");
956 obstack_init(&ast_obstack);
961 obstack_free(&ast_obstack, NULL);
964 void ast_set_output(FILE *stream)
967 type_set_output(stream);
970 void* (allocate_ast) (size_t size)
972 return _allocate_ast(size);