11 #include "adt/error.h"
13 struct obstack ast_obstack;
18 static void print_statement(const statement_t *statement);
20 void change_indent(int delta)
26 void print_indent(void)
28 for(int i = 0; i < indent; ++i)
32 static void print_const(const const_expression_t *cnst)
34 if(cnst->expression.datatype == NULL)
37 if(is_type_integer(cnst->expression.datatype)) {
38 fprintf(out, "%lld", cnst->v.int_value);
39 } else if(is_type_floating(cnst->expression.datatype)) {
40 fprintf(out, "%Lf", cnst->v.float_value);
44 static void print_quoted_string(const char *string)
47 for(const char *c = string; *c != '\0'; ++c) {
49 case '\"': fputs("\\\"", out); break;
50 case '\\': fputs("\\\\", out); break;
51 case '\a': fputs("\\a", out); break;
52 case '\b': fputs("\\b", out); break;
53 case '\f': fputs("\\f", out); break;
54 case '\n': fputs("\\n", out); break;
55 case '\r': fputs("\\r", out); break;
56 case '\t': fputs("\\t", out); break;
57 case '\v': fputs("\\v", out); break;
58 case '\?': fputs("\\?", out); break;
61 fprintf(out, "\\x%x", *c);
71 static void print_string_literal(
72 const string_literal_expression_t *string_literal)
74 print_quoted_string(string_literal->value);
77 static void print_wide_string_literal(
78 const wide_string_literal_expression_t *const wstr)
81 for (const wchar_rep_t *c = wstr->value.begin,
82 *end = c + wstr->value.size;
85 case L'\"': fputs("\\\"", out); break;
86 case L'\\': fputs("\\\\", out); break;
87 case L'\a': fputs("\\a", out); break;
88 case L'\b': fputs("\\b", out); break;
89 case L'\f': fputs("\\f", out); break;
90 case L'\n': fputs("\\n", out); break;
91 case L'\r': fputs("\\r", out); break;
92 case L'\t': fputs("\\t", out); break;
93 case L'\v': fputs("\\v", out); break;
94 case L'\?': fputs("\\?", out); break;
96 const unsigned tc = *c;
99 fprintf(out, "\\%03o", (char)*c);
103 } else if (tc < 0x800) {
104 fputc(0xC0 | (tc >> 6), out);
105 fputc(0x80 | (tc & 0x3F), out);
106 } else if (tc < 0x10000) {
107 fputc(0xE0 | ( tc >> 12), out);
108 fputc(0x80 | ((tc >> 6) & 0x3F), out);
109 fputc(0x80 | ( tc & 0x3F), out);
111 fputc(0xF0 | ( tc >> 18), out);
112 fputc(0x80 | ((tc >> 12) & 0x3F), out);
113 fputc(0x80 | ((tc >> 6) & 0x3F), out);
114 fputc(0x80 | ( tc & 0x3F), out);
122 static void print_call_expression(const call_expression_t *call)
124 print_expression(call->function);
126 call_argument_t *argument = call->arguments;
128 while(argument != NULL) {
134 print_expression(argument->expression);
136 argument = argument->next;
141 static void print_binary_expression(const binary_expression_t *binexpr)
143 if(binexpr->expression.kind == EXPR_BINARY_BUILTIN_EXPECT) {
144 fputs("__builtin_expect(", out);
145 print_expression(binexpr->left);
147 print_expression(binexpr->right);
153 print_expression(binexpr->left);
155 switch(binexpr->expression.kind) {
156 case EXPR_BINARY_COMMA: fputs(",", out); break;
157 case EXPR_BINARY_ASSIGN: fputs("=", out); break;
158 case EXPR_BINARY_ADD: fputs("+", out); break;
159 case EXPR_BINARY_SUB: fputs("-", out); break;
160 case EXPR_BINARY_MUL: fputs("*", out); break;
161 case EXPR_BINARY_MOD: fputs("%", out); break;
162 case EXPR_BINARY_DIV: fputs("/", out); break;
163 case EXPR_BINARY_BITWISE_OR: fputs("|", out); break;
164 case EXPR_BINARY_BITWISE_AND: fputs("&", out); break;
165 case EXPR_BINARY_BITWISE_XOR: fputs("^", out); break;
166 case EXPR_BINARY_LOGICAL_OR: fputs("||", out); break;
167 case EXPR_BINARY_LOGICAL_AND: fputs("&&", out); break;
168 case EXPR_BINARY_NOTEQUAL: fputs("!=", out); break;
169 case EXPR_BINARY_EQUAL: fputs("==", out); break;
170 case EXPR_BINARY_LESS: fputs("<", out); break;
171 case EXPR_BINARY_LESSEQUAL: fputs("<=", out); break;
172 case EXPR_BINARY_GREATER: fputs(">", out); break;
173 case EXPR_BINARY_GREATEREQUAL: fputs(">=", out); break;
174 case EXPR_BINARY_SHIFTLEFT: fputs("<<", out); break;
175 case EXPR_BINARY_SHIFTRIGHT: fputs(">>", out); break;
177 case EXPR_BINARY_ADD_ASSIGN: fputs("+=", out); break;
178 case EXPR_BINARY_SUB_ASSIGN: fputs("-=", out); break;
179 case EXPR_BINARY_MUL_ASSIGN: fputs("*=", out); break;
180 case EXPR_BINARY_MOD_ASSIGN: fputs("%=", out); break;
181 case EXPR_BINARY_DIV_ASSIGN: fputs("/=", out); break;
182 case EXPR_BINARY_BITWISE_OR_ASSIGN: fputs("|=", out); break;
183 case EXPR_BINARY_BITWISE_AND_ASSIGN: fputs("&=", out); break;
184 case EXPR_BINARY_BITWISE_XOR_ASSIGN: fputs("^=", out); break;
185 case EXPR_BINARY_SHIFTLEFT_ASSIGN: fputs("<<=", out); break;
186 case EXPR_BINARY_SHIFTRIGHT_ASSIGN: fputs(">>=", out); break;
187 default: panic("invalid binexpression found");
190 print_expression(binexpr->right);
194 static void print_unary_expression(const unary_expression_t *unexpr)
196 switch(unexpr->expression.kind) {
197 case EXPR_UNARY_NEGATE: fputs("-", out); break;
198 case EXPR_UNARY_PLUS: fputs("+", out); break;
199 case EXPR_UNARY_NOT: fputs("!", out); break;
200 case EXPR_UNARY_BITWISE_NEGATE: fputs("~", out); break;
201 case EXPR_UNARY_PREFIX_INCREMENT: fputs("++", out); break;
202 case EXPR_UNARY_PREFIX_DECREMENT: fputs("--", out); break;
203 case EXPR_UNARY_DEREFERENCE: fputs("*", out); break;
204 case EXPR_UNARY_TAKE_ADDRESS: fputs("&", out); break;
206 case EXPR_UNARY_POSTFIX_INCREMENT:
208 print_expression(unexpr->value);
212 case EXPR_UNARY_POSTFIX_DECREMENT:
214 print_expression(unexpr->value);
218 case EXPR_UNARY_CAST:
220 print_type(unexpr->expression.datatype);
223 case EXPR_UNARY_CAST_IMPLICIT:
224 print_expression(unexpr->value);
226 case EXPR_UNARY_ASSUME:
227 fputs("__assume", out);
230 panic("invalid unary expression found");
233 print_expression(unexpr->value);
237 static void print_reference_expression(const reference_expression_t *ref)
239 fprintf(out, "%s", ref->declaration->symbol->string);
242 static void print_array_expression(const array_access_expression_t *expression)
244 if(!expression->flipped) {
246 print_expression(expression->array_ref);
248 print_expression(expression->index);
252 print_expression(expression->index);
254 print_expression(expression->array_ref);
259 static void print_sizeof_expression(const sizeof_expression_t *expression)
261 fputs("sizeof", out);
262 if(expression->size_expression != NULL) {
264 print_expression(expression->size_expression);
268 print_type(expression->type);
273 static void print_alignof_expression(const alignof_expression_t *expression)
275 fputs("__alignof__(", out);
276 print_type(expression->type);
280 static void print_builtin_symbol(const builtin_symbol_expression_t *expression)
282 fputs(expression->symbol->string, out);
285 static void print_builtin_constant(const builtin_constant_expression_t *expression)
287 fputs("__builtin_constant_p(", out);
288 print_expression(expression->value);
292 static void print_conditional(const conditional_expression_t *expression)
295 print_expression(expression->condition);
297 print_expression(expression->true_expression);
299 print_expression(expression->false_expression);
303 static void print_va_start(const va_start_expression_t *const expression)
305 fputs("__builtin_va_start(", out);
306 print_expression(expression->ap);
308 fputs(expression->parameter->symbol->string, out);
312 static void print_va_arg(const va_arg_expression_t *expression)
314 fputs("__builtin_va_arg(", out);
315 print_expression(expression->ap);
317 print_type(expression->expression.datatype);
321 static void print_select(const select_expression_t *expression)
323 print_expression(expression->compound);
324 if(expression->compound->base.datatype == NULL ||
325 expression->compound->base.datatype->kind == TYPE_POINTER) {
330 fputs(expression->symbol->string, out);
333 static void print_classify_type_expression(
334 const classify_type_expression_t *const expr)
336 fputs("__builtin_classify_type(", out);
337 print_expression(expr->type_expression);
341 static void print_designator(const designator_t *designator)
343 fputs(designator->symbol->string, out);
344 for (designator = designator->next; designator != NULL; designator = designator->next) {
345 if (designator->array_access) {
347 print_expression(designator->array_access);
351 fputs(designator->symbol->string, out);
356 static void print_offsetof_expression(const offsetof_expression_t *expression)
358 fputs("__builtin_offsetof", out);
360 print_type(expression->type);
362 print_designator(expression->designator);
366 static void print_statement_expression(const statement_expression_t *expression)
369 print_statement(expression->statement);
373 void print_expression(const expression_t *expression)
375 switch(expression->kind) {
378 fprintf(out, "*invalid expression*");
381 print_const(&expression->conste);
384 case EXPR_PRETTY_FUNCTION:
385 case EXPR_STRING_LITERAL:
386 print_string_literal(&expression->string);
388 case EXPR_WIDE_STRING_LITERAL:
389 print_wide_string_literal(&expression->wide_string);
392 print_call_expression(&expression->call);
395 print_binary_expression(&expression->binary);
398 print_reference_expression(&expression->reference);
400 case EXPR_ARRAY_ACCESS:
401 print_array_expression(&expression->array_access);
404 print_unary_expression(&expression->unary);
407 print_sizeof_expression(&expression->sizeofe);
410 print_alignof_expression(&expression->alignofe);
412 case EXPR_BUILTIN_SYMBOL:
413 print_builtin_symbol(&expression->builtin_symbol);
415 case EXPR_BUILTIN_CONSTANT_P:
416 print_builtin_constant(&expression->builtin_constant);
418 case EXPR_CONDITIONAL:
419 print_conditional(&expression->conditional);
422 print_va_start(&expression->va_starte);
425 print_va_arg(&expression->va_arge);
428 print_select(&expression->select);
430 case EXPR_CLASSIFY_TYPE:
431 print_classify_type_expression(&expression->classify_type);
434 print_offsetof_expression(&expression->offsetofe);
437 print_statement_expression(&expression->statement);
442 fprintf(out, "some expression of type %d", (int) expression->kind);
447 static void print_compound_statement(const compound_statement_t *block)
452 statement_t *statement = block->statements;
453 while(statement != NULL) {
455 print_statement(statement);
457 statement = statement->base.next;
464 static void print_return_statement(const return_statement_t *statement)
466 fprintf(out, "return ");
467 if(statement->return_value != NULL)
468 print_expression(statement->return_value);
472 static void print_expression_statement(const expression_statement_t *statement)
474 print_expression(statement->expression);
478 static void print_goto_statement(const goto_statement_t *statement)
480 fprintf(out, "goto ");
481 fputs(statement->label->symbol->string, out);
482 fprintf(stderr, "(%p)", (void*) statement->label);
486 static void print_label_statement(const label_statement_t *statement)
488 fprintf(stderr, "(%p)", (void*) statement->label);
489 fprintf(out, "%s:\n", statement->label->symbol->string);
490 if(statement->label_statement != NULL) {
491 print_statement(statement->label_statement);
495 static void print_if_statement(const if_statement_t *statement)
498 print_expression(statement->condition);
500 if(statement->true_statement != NULL) {
501 print_statement(statement->true_statement);
504 if(statement->false_statement != NULL) {
507 print_statement(statement->false_statement);
511 static void print_switch_statement(const switch_statement_t *statement)
513 fputs("switch(", out);
514 print_expression(statement->expression);
516 print_statement(statement->body);
519 static void print_case_label(const case_label_statement_t *statement)
521 if(statement->expression == NULL) {
522 fputs("default:\n", out);
525 print_expression(statement->expression);
528 print_statement(statement->label_statement);
531 static void print_declaration_statement(
532 const declaration_statement_t *statement)
535 declaration_t *declaration = statement->declarations_begin;
536 for( ; declaration != statement->declarations_end->next;
537 declaration = declaration->next) {
543 print_declaration(declaration);
548 static void print_while_statement(const while_statement_t *statement)
550 fputs("while(", out);
551 print_expression(statement->condition);
553 print_statement(statement->body);
556 static void print_do_while_statement(const do_while_statement_t *statement)
559 print_statement(statement->body);
561 fputs("while(", out);
562 print_expression(statement->condition);
566 static void print_for_statement(const for_statement_t *statement)
569 if(statement->context.declarations != NULL) {
570 assert(statement->initialisation == NULL);
571 print_declaration(statement->context.declarations);
572 if(statement->context.declarations->next != NULL) {
573 panic("multiple declarations in for statement not supported yet");
577 if(statement->initialisation) {
578 print_expression(statement->initialisation);
582 if(statement->condition != NULL) {
583 print_expression(statement->condition);
586 if(statement->step != NULL) {
587 print_expression(statement->step);
590 print_statement(statement->body);
593 static void print_asm_constraints(asm_constraint_t *constraints)
595 asm_constraint_t *constraint = constraints;
596 for( ; constraint != NULL; constraint = constraint->next) {
597 if(constraint != constraints)
600 if(constraint->symbol) {
601 fprintf(out, "[%s] ", constraint->symbol->string);
603 print_quoted_string(constraint->constraints);
605 print_expression(constraint->expression);
610 static void print_asm_clobbers(asm_clobber_t *clobbers)
612 asm_clobber_t *clobber = clobbers;
613 for( ; clobber != NULL; clobber = clobber->next) {
614 if(clobber != clobbers)
617 print_quoted_string(clobber->clobber);
621 static void print_asm_statement(const asm_statement_t *statement)
624 if(statement->is_volatile) {
625 fputs("volatile ", out);
628 print_quoted_string(statement->asm_text);
629 if(statement->inputs == NULL && statement->outputs == NULL
630 && statement->clobbers == NULL)
631 goto end_of_print_asm_statement;
634 print_asm_constraints(statement->inputs);
635 if(statement->outputs == NULL && statement->clobbers == NULL)
636 goto end_of_print_asm_statement;
639 print_asm_constraints(statement->outputs);
640 if(statement->clobbers == NULL)
641 goto end_of_print_asm_statement;
644 print_asm_clobbers(statement->clobbers);
646 end_of_print_asm_statement:
650 void print_statement(const statement_t *statement)
652 switch(statement->kind) {
653 case STATEMENT_COMPOUND:
654 print_compound_statement(&statement->compound);
656 case STATEMENT_RETURN:
657 print_return_statement(&statement->returns);
659 case STATEMENT_EXPRESSION:
660 print_expression_statement(&statement->expression);
662 case STATEMENT_LABEL:
663 print_label_statement(&statement->label);
666 print_goto_statement(&statement->gotos);
668 case STATEMENT_CONTINUE:
669 fputs("continue;\n", out);
671 case STATEMENT_BREAK:
672 fputs("break;\n", out);
675 print_if_statement(&statement->ifs);
677 case STATEMENT_SWITCH:
678 print_switch_statement(&statement->switchs);
680 case STATEMENT_CASE_LABEL:
681 print_case_label(&statement->case_label);
683 case STATEMENT_DECLARATION:
684 print_declaration_statement(&statement->declaration);
686 case STATEMENT_WHILE:
687 print_while_statement(&statement->whiles);
689 case STATEMENT_DO_WHILE:
690 print_do_while_statement(&statement->do_while);
693 print_for_statement(&statement->fors);
696 print_asm_statement(&statement->asms);
698 case STATEMENT_INVALID:
699 fprintf(out, "*invalid statement*");
704 static void print_storage_class(unsigned storage_class)
706 switch((storage_class_tag_t) storage_class) {
707 case STORAGE_CLASS_ENUM_ENTRY:
708 case STORAGE_CLASS_NONE:
710 case STORAGE_CLASS_TYPEDEF: fputs("typedef ", out); break;
711 case STORAGE_CLASS_EXTERN: fputs("extern ", out); break;
712 case STORAGE_CLASS_STATIC: fputs("static ", out); break;
713 case STORAGE_CLASS_AUTO: fputs("auto ", out); break;
714 case STORAGE_CLASS_REGISTER: fputs("register ", out); break;
715 case STORAGE_CLASS_THREAD: fputs("__thread", out); break;
716 case STORAGE_CLASS_THREAD_EXTERN: fputs("extern __thread", out); break;
717 case STORAGE_CLASS_THREAD_STATIC: fputs("static __thread", out); break;
721 void print_initializer(const initializer_t *initializer)
723 if(initializer->kind == INITIALIZER_VALUE) {
724 const initializer_value_t *value = &initializer->value;
725 print_expression(value->value);
729 assert(initializer->kind == INITIALIZER_LIST);
731 const initializer_list_t *list = &initializer->list;
733 for(size_t i = 0 ; i < list->len; ++i) {
737 print_initializer(list->initializers[i]);
742 static void print_normal_declaration(const declaration_t *declaration)
744 print_storage_class(declaration->storage_class);
745 if(declaration->is_inline) {
746 if (declaration->decl_modifiers & DM_FORCEINLINE)
747 fputs("__forceinline ", out);
749 fputs("inline ", out);
751 print_type_ext(declaration->type, declaration->symbol,
752 &declaration->context);
754 if(declaration->type->kind == TYPE_FUNCTION) {
755 if(declaration->init.statement != NULL) {
757 print_statement(declaration->init.statement);
760 } else if(declaration->init.initializer != NULL) {
762 print_initializer(declaration->init.initializer);
767 void print_declaration(const declaration_t *declaration)
769 if(declaration->namespc != NAMESPACE_NORMAL &&
770 declaration->symbol == NULL)
773 switch(declaration->namespc) {
774 case NAMESPACE_NORMAL:
775 print_normal_declaration(declaration);
777 case NAMESPACE_STRUCT:
778 fputs("struct ", out);
779 fputs(declaration->symbol->string, out);
781 print_compound_definition(declaration);
784 case NAMESPACE_UNION:
785 fputs("union ", out);
786 fputs(declaration->symbol->string, out);
788 print_compound_definition(declaration);
793 fputs(declaration->symbol->string, out);
795 print_enum_definition(declaration);
801 void print_ast(const translation_unit_t *unit)
805 declaration_t *declaration = unit->context.declarations;
806 for( ; declaration != NULL; declaration = declaration->next) {
807 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY)
809 if(declaration->namespc != NAMESPACE_NORMAL &&
810 declaration->symbol == NULL)
814 print_declaration(declaration);
819 bool is_constant_expression(const expression_t *expression)
821 switch(expression->kind) {
824 case EXPR_STRING_LITERAL:
825 case EXPR_WIDE_STRING_LITERAL:
827 case EXPR_CLASSIFY_TYPE:
829 case EXPR_PRETTY_FUNCTION:
832 case EXPR_BUILTIN_CONSTANT_P:
835 case EXPR_BUILTIN_SYMBOL:
841 case EXPR_UNARY_POSTFIX_INCREMENT:
842 case EXPR_UNARY_POSTFIX_DECREMENT:
843 case EXPR_UNARY_PREFIX_INCREMENT:
844 case EXPR_UNARY_PREFIX_DECREMENT:
845 case EXPR_UNARY_ASSUME: /* has VOID type */
846 case EXPR_BINARY_ASSIGN:
847 case EXPR_BINARY_MUL_ASSIGN:
848 case EXPR_BINARY_DIV_ASSIGN:
849 case EXPR_BINARY_MOD_ASSIGN:
850 case EXPR_BINARY_ADD_ASSIGN:
851 case EXPR_BINARY_SUB_ASSIGN:
852 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
853 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
854 case EXPR_BINARY_BITWISE_AND_ASSIGN:
855 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
856 case EXPR_BINARY_BITWISE_OR_ASSIGN:
857 case EXPR_BINARY_COMMA:
860 case EXPR_UNARY_NEGATE:
861 case EXPR_UNARY_PLUS:
862 case EXPR_UNARY_BITWISE_NEGATE:
864 case EXPR_UNARY_DEREFERENCE:
865 case EXPR_UNARY_TAKE_ADDRESS:
866 case EXPR_UNARY_CAST:
867 case EXPR_UNARY_CAST_IMPLICIT:
868 return is_constant_expression(expression->unary.value);
870 case EXPR_BINARY_ADD:
871 case EXPR_BINARY_SUB:
872 case EXPR_BINARY_MUL:
873 case EXPR_BINARY_DIV:
874 case EXPR_BINARY_MOD:
875 case EXPR_BINARY_EQUAL:
876 case EXPR_BINARY_NOTEQUAL:
877 case EXPR_BINARY_LESS:
878 case EXPR_BINARY_LESSEQUAL:
879 case EXPR_BINARY_GREATER:
880 case EXPR_BINARY_GREATEREQUAL:
881 case EXPR_BINARY_BITWISE_AND:
882 case EXPR_BINARY_BITWISE_OR:
883 case EXPR_BINARY_BITWISE_XOR:
884 case EXPR_BINARY_LOGICAL_AND:
885 case EXPR_BINARY_LOGICAL_OR:
886 case EXPR_BINARY_SHIFTLEFT:
887 case EXPR_BINARY_SHIFTRIGHT:
888 case EXPR_BINARY_BUILTIN_EXPECT:
889 case EXPR_BINARY_ISGREATER:
890 case EXPR_BINARY_ISGREATEREQUAL:
891 case EXPR_BINARY_ISLESS:
892 case EXPR_BINARY_ISLESSEQUAL:
893 case EXPR_BINARY_ISLESSGREATER:
894 case EXPR_BINARY_ISUNORDERED:
895 return is_constant_expression(expression->binary.left)
896 && is_constant_expression(expression->binary.right);
898 case EXPR_CONDITIONAL:
899 /* TODO: not correct, we only have to test expressions which are
900 * evaluated, which means either the true or false part might be not
902 return is_constant_expression(expression->conditional.condition)
903 && is_constant_expression(expression->conditional.true_expression)
904 && is_constant_expression(expression->conditional.false_expression);
906 case EXPR_ARRAY_ACCESS:
907 return is_constant_expression(expression->array_access.array_ref)
908 && is_constant_expression(expression->array_access.index);
910 case EXPR_REFERENCE: {
911 declaration_t *declaration = expression->reference.declaration;
912 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY)
922 panic("invalid expression found (is constant expression)");
928 obstack_init(&ast_obstack);
933 obstack_free(&ast_obstack, NULL);
936 void ast_set_output(FILE *stream)
939 type_set_output(stream);
942 void* (allocate_ast) (size_t size)
944 return _allocate_ast(size);