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->base.type == NULL)
38 if(is_type_integer(cnst->base.type)) {
39 fprintf(out, "%lld", cnst->v.int_value);
40 } else if(is_type_float(cnst->base.type)) {
41 fprintf(out, "%Lf", cnst->v.float_value);
45 static void print_quoted_string(const string_t *const string)
48 const char *end = string->begin + string->size;
49 for (const char *c = string->begin; c != end; ++c) {
51 case '\"': fputs("\\\"", out); break;
52 case '\\': fputs("\\\\", out); break;
53 case '\a': fputs("\\a", out); break;
54 case '\b': fputs("\\b", out); break;
55 case '\f': fputs("\\f", out); break;
56 case '\n': fputs("\\n", out); break;
57 case '\r': fputs("\\r", out); break;
58 case '\t': fputs("\\t", out); break;
59 case '\v': fputs("\\v", out); break;
60 case '\?': fputs("\\?", out); break;
63 fprintf(out, "\\%03o", *c);
73 static void print_string_literal(
74 const string_literal_expression_t *string_literal)
76 print_quoted_string(&string_literal->value);
79 static void print_wide_string_literal(
80 const wide_string_literal_expression_t *const wstr)
83 for (const wchar_rep_t *c = wstr->value.begin,
84 *end = c + wstr->value.size;
87 case L'\"': fputs("\\\"", out); break;
88 case L'\\': fputs("\\\\", out); break;
89 case L'\a': fputs("\\a", out); break;
90 case L'\b': fputs("\\b", out); break;
91 case L'\f': fputs("\\f", out); break;
92 case L'\n': fputs("\\n", out); break;
93 case L'\r': fputs("\\r", out); break;
94 case L'\t': fputs("\\t", out); break;
95 case L'\v': fputs("\\v", out); break;
96 case L'\?': fputs("\\?", out); break;
98 const unsigned tc = *c;
101 fprintf(out, "\\%03o", (char)*c);
105 } else if (tc < 0x800) {
106 fputc(0xC0 | (tc >> 6), out);
107 fputc(0x80 | (tc & 0x3F), out);
108 } else if (tc < 0x10000) {
109 fputc(0xE0 | ( tc >> 12), out);
110 fputc(0x80 | ((tc >> 6) & 0x3F), out);
111 fputc(0x80 | ( tc & 0x3F), out);
113 fputc(0xF0 | ( tc >> 18), out);
114 fputc(0x80 | ((tc >> 12) & 0x3F), out);
115 fputc(0x80 | ((tc >> 6) & 0x3F), out);
116 fputc(0x80 | ( tc & 0x3F), out);
124 static void print_call_expression(const call_expression_t *call)
126 print_expression(call->function);
128 call_argument_t *argument = call->arguments;
130 while(argument != NULL) {
136 print_expression(argument->expression);
138 argument = argument->next;
143 static void print_binary_expression(const binary_expression_t *binexpr)
145 if(binexpr->base.kind == EXPR_BINARY_BUILTIN_EXPECT) {
146 fputs("__builtin_expect(", out);
147 print_expression(binexpr->left);
149 print_expression(binexpr->right);
155 print_expression(binexpr->left);
157 switch(binexpr->base.kind) {
158 case EXPR_BINARY_COMMA: fputs(",", out); break;
159 case EXPR_BINARY_ASSIGN: fputs("=", out); break;
160 case EXPR_BINARY_ADD: fputs("+", out); break;
161 case EXPR_BINARY_SUB: fputs("-", out); break;
162 case EXPR_BINARY_MUL: fputs("*", out); break;
163 case EXPR_BINARY_MOD: fputs("%", out); break;
164 case EXPR_BINARY_DIV: fputs("/", out); break;
165 case EXPR_BINARY_BITWISE_OR: fputs("|", out); break;
166 case EXPR_BINARY_BITWISE_AND: fputs("&", out); break;
167 case EXPR_BINARY_BITWISE_XOR: fputs("^", out); break;
168 case EXPR_BINARY_LOGICAL_OR: fputs("||", out); break;
169 case EXPR_BINARY_LOGICAL_AND: fputs("&&", out); break;
170 case EXPR_BINARY_NOTEQUAL: fputs("!=", out); break;
171 case EXPR_BINARY_EQUAL: fputs("==", out); break;
172 case EXPR_BINARY_LESS: fputs("<", out); break;
173 case EXPR_BINARY_LESSEQUAL: fputs("<=", out); break;
174 case EXPR_BINARY_GREATER: fputs(">", out); break;
175 case EXPR_BINARY_GREATEREQUAL: fputs(">=", out); break;
176 case EXPR_BINARY_SHIFTLEFT: fputs("<<", out); break;
177 case EXPR_BINARY_SHIFTRIGHT: fputs(">>", out); break;
179 case EXPR_BINARY_ADD_ASSIGN: fputs("+=", out); break;
180 case EXPR_BINARY_SUB_ASSIGN: fputs("-=", out); break;
181 case EXPR_BINARY_MUL_ASSIGN: fputs("*=", out); break;
182 case EXPR_BINARY_MOD_ASSIGN: fputs("%=", out); break;
183 case EXPR_BINARY_DIV_ASSIGN: fputs("/=", out); break;
184 case EXPR_BINARY_BITWISE_OR_ASSIGN: fputs("|=", out); break;
185 case EXPR_BINARY_BITWISE_AND_ASSIGN: fputs("&=", out); break;
186 case EXPR_BINARY_BITWISE_XOR_ASSIGN: fputs("^=", out); break;
187 case EXPR_BINARY_SHIFTLEFT_ASSIGN: fputs("<<=", out); break;
188 case EXPR_BINARY_SHIFTRIGHT_ASSIGN: fputs(">>=", out); break;
189 default: panic("invalid binexpression found");
192 print_expression(binexpr->right);
196 static void print_unary_expression(const unary_expression_t *unexpr)
198 switch(unexpr->base.kind) {
199 case EXPR_UNARY_NEGATE: fputs("-", out); break;
200 case EXPR_UNARY_PLUS: fputs("+", out); break;
201 case EXPR_UNARY_NOT: fputs("!", out); break;
202 case EXPR_UNARY_BITWISE_NEGATE: fputs("~", out); break;
203 case EXPR_UNARY_PREFIX_INCREMENT: fputs("++", out); break;
204 case EXPR_UNARY_PREFIX_DECREMENT: fputs("--", out); break;
205 case EXPR_UNARY_DEREFERENCE: fputs("*", out); break;
206 case EXPR_UNARY_TAKE_ADDRESS: fputs("&", out); break;
208 case EXPR_UNARY_BITFIELD_EXTRACT:
209 print_expression(unexpr->value);
212 case EXPR_UNARY_POSTFIX_INCREMENT:
214 print_expression(unexpr->value);
218 case EXPR_UNARY_POSTFIX_DECREMENT:
220 print_expression(unexpr->value);
224 case EXPR_UNARY_CAST_IMPLICIT:
225 if(!print_implicit_casts) {
226 print_expression(unexpr->value);
230 case EXPR_UNARY_CAST:
232 print_type(unexpr->base.type);
235 case EXPR_UNARY_ASSUME:
236 fputs("__assume", out);
239 panic("invalid unary expression found");
242 print_expression(unexpr->value);
246 static void print_reference_expression(const reference_expression_t *ref)
248 fprintf(out, "%s", ref->declaration->symbol->string);
251 static void print_array_expression(const array_access_expression_t *expression)
253 if(!expression->flipped) {
255 print_expression(expression->array_ref);
257 print_expression(expression->index);
261 print_expression(expression->index);
263 print_expression(expression->array_ref);
268 static void print_typeprop_expression(const typeprop_expression_t *expression)
270 if (expression->base.kind == EXPR_SIZEOF) {
271 fputs("sizeof", out);
273 assert(expression->base.kind == EXPR_ALIGNOF);
274 fputs("__alignof__", out);
276 if(expression->tp_expression != NULL) {
278 print_expression(expression->tp_expression);
282 print_type(expression->type);
287 static void print_builtin_symbol(const builtin_symbol_expression_t *expression)
289 fputs(expression->symbol->string, out);
292 static void print_builtin_constant(const builtin_constant_expression_t *expression)
294 fputs("__builtin_constant_p(", out);
295 print_expression(expression->value);
299 static void print_builtin_prefetch(const builtin_prefetch_expression_t *expression)
301 fputs("__builtin_prefetch(", out);
302 print_expression(expression->adr);
303 if (expression->rw) {
305 print_expression(expression->rw);
307 if (expression->locality) {
309 print_expression(expression->locality);
314 static void print_conditional(const conditional_expression_t *expression)
317 print_expression(expression->condition);
319 print_expression(expression->true_expression);
321 print_expression(expression->false_expression);
325 static void print_va_start(const va_start_expression_t *const expression)
327 fputs("__builtin_va_start(", out);
328 print_expression(expression->ap);
330 fputs(expression->parameter->symbol->string, out);
334 static void print_va_arg(const va_arg_expression_t *expression)
336 fputs("__builtin_va_arg(", out);
337 print_expression(expression->ap);
339 print_type(expression->base.type);
343 static void print_select(const select_expression_t *expression)
345 print_expression(expression->compound);
346 if(expression->compound->base.type == NULL ||
347 expression->compound->base.type->kind == TYPE_POINTER) {
352 fputs(expression->symbol->string, out);
355 static void print_classify_type_expression(
356 const classify_type_expression_t *const expr)
358 fputs("__builtin_classify_type(", out);
359 print_expression(expr->type_expression);
363 static void print_designator(const designator_t *designator)
365 fputs(designator->symbol->string, out);
366 for (designator = designator->next; designator != NULL; designator = designator->next) {
367 if (designator->array_access) {
369 print_expression(designator->array_access);
373 fputs(designator->symbol->string, out);
378 static void print_offsetof_expression(const offsetof_expression_t *expression)
380 fputs("__builtin_offsetof", out);
382 print_type(expression->type);
384 print_designator(expression->designator);
388 static void print_statement_expression(const statement_expression_t *expression)
391 print_statement(expression->statement);
395 void print_expression(const expression_t *expression)
397 switch(expression->kind) {
400 fprintf(out, "*invalid expression*");
403 print_const(&expression->conste);
406 case EXPR_PRETTY_FUNCTION:
407 case EXPR_STRING_LITERAL:
408 print_string_literal(&expression->string);
410 case EXPR_WIDE_STRING_LITERAL:
411 print_wide_string_literal(&expression->wide_string);
414 print_call_expression(&expression->call);
417 print_binary_expression(&expression->binary);
420 print_reference_expression(&expression->reference);
422 case EXPR_ARRAY_ACCESS:
423 print_array_expression(&expression->array_access);
426 print_unary_expression(&expression->unary);
430 print_typeprop_expression(&expression->typeprop);
432 case EXPR_BUILTIN_SYMBOL:
433 print_builtin_symbol(&expression->builtin_symbol);
435 case EXPR_BUILTIN_CONSTANT_P:
436 print_builtin_constant(&expression->builtin_constant);
438 case EXPR_BUILTIN_PREFETCH:
439 print_builtin_prefetch(&expression->builtin_prefetch);
441 case EXPR_CONDITIONAL:
442 print_conditional(&expression->conditional);
445 print_va_start(&expression->va_starte);
448 print_va_arg(&expression->va_arge);
451 print_select(&expression->select);
453 case EXPR_CLASSIFY_TYPE:
454 print_classify_type_expression(&expression->classify_type);
457 print_offsetof_expression(&expression->offsetofe);
460 print_statement_expression(&expression->statement);
465 fprintf(out, "some expression of type %d", (int) expression->kind);
470 static void print_compound_statement(const compound_statement_t *block)
475 statement_t *statement = block->statements;
476 while(statement != NULL) {
478 print_statement(statement);
480 statement = statement->base.next;
487 static void print_return_statement(const return_statement_t *statement)
489 fprintf(out, "return ");
490 if(statement->return_value != NULL)
491 print_expression(statement->return_value);
495 static void print_expression_statement(const expression_statement_t *statement)
497 print_expression(statement->expression);
501 static void print_goto_statement(const goto_statement_t *statement)
503 fprintf(out, "goto ");
504 fputs(statement->label->symbol->string, out);
505 fprintf(stderr, "(%p)", (void*) statement->label);
509 static void print_label_statement(const label_statement_t *statement)
511 fprintf(stderr, "(%p)", (void*) statement->label);
512 fprintf(out, "%s:\n", statement->label->symbol->string);
513 if(statement->label_statement != NULL) {
514 print_statement(statement->label_statement);
518 static void print_if_statement(const if_statement_t *statement)
521 print_expression(statement->condition);
523 if(statement->true_statement != NULL) {
524 print_statement(statement->true_statement);
527 if(statement->false_statement != NULL) {
530 print_statement(statement->false_statement);
534 static void print_switch_statement(const switch_statement_t *statement)
536 fputs("switch(", out);
537 print_expression(statement->expression);
539 print_statement(statement->body);
542 static void print_case_label(const case_label_statement_t *statement)
544 if(statement->expression == NULL) {
545 fputs("default:\n", out);
548 print_expression(statement->expression);
551 print_statement(statement->label_statement);
554 static void print_declaration_statement(
555 const declaration_statement_t *statement)
558 declaration_t *declaration = statement->declarations_begin;
559 for( ; declaration != statement->declarations_end->next;
560 declaration = declaration->next) {
566 print_declaration(declaration);
571 static void print_while_statement(const while_statement_t *statement)
573 fputs("while(", out);
574 print_expression(statement->condition);
576 print_statement(statement->body);
579 static void print_do_while_statement(const do_while_statement_t *statement)
582 print_statement(statement->body);
584 fputs("while(", out);
585 print_expression(statement->condition);
589 static void print_for_statement(const for_statement_t *statement)
592 if(statement->scope.declarations != NULL) {
593 assert(statement->initialisation == NULL);
594 print_declaration(statement->scope.declarations);
595 if(statement->scope.declarations->next != NULL) {
596 panic("multiple declarations in for statement not supported yet");
600 if(statement->initialisation) {
601 print_expression(statement->initialisation);
605 if(statement->condition != NULL) {
606 print_expression(statement->condition);
609 if(statement->step != NULL) {
610 print_expression(statement->step);
613 print_statement(statement->body);
616 static void print_asm_constraints(asm_constraint_t *constraints)
618 asm_constraint_t *constraint = constraints;
619 for( ; constraint != NULL; constraint = constraint->next) {
620 if(constraint != constraints)
623 if(constraint->symbol) {
624 fprintf(out, "[%s] ", constraint->symbol->string);
626 print_quoted_string(&constraint->constraints);
628 print_expression(constraint->expression);
633 static void print_asm_clobbers(asm_clobber_t *clobbers)
635 asm_clobber_t *clobber = clobbers;
636 for( ; clobber != NULL; clobber = clobber->next) {
637 if(clobber != clobbers)
640 print_quoted_string(&clobber->clobber);
644 static void print_asm_statement(const asm_statement_t *statement)
647 if(statement->is_volatile) {
648 fputs("volatile ", out);
651 print_quoted_string(&statement->asm_text);
652 if(statement->inputs == NULL && statement->outputs == NULL
653 && statement->clobbers == NULL)
654 goto end_of_print_asm_statement;
657 print_asm_constraints(statement->inputs);
658 if(statement->outputs == NULL && statement->clobbers == NULL)
659 goto end_of_print_asm_statement;
662 print_asm_constraints(statement->outputs);
663 if(statement->clobbers == NULL)
664 goto end_of_print_asm_statement;
667 print_asm_clobbers(statement->clobbers);
669 end_of_print_asm_statement:
673 void print_statement(const statement_t *statement)
675 switch(statement->kind) {
676 case STATEMENT_COMPOUND:
677 print_compound_statement(&statement->compound);
679 case STATEMENT_RETURN:
680 print_return_statement(&statement->returns);
682 case STATEMENT_EXPRESSION:
683 print_expression_statement(&statement->expression);
685 case STATEMENT_LABEL:
686 print_label_statement(&statement->label);
689 print_goto_statement(&statement->gotos);
691 case STATEMENT_CONTINUE:
692 fputs("continue;\n", out);
694 case STATEMENT_BREAK:
695 fputs("break;\n", out);
698 print_if_statement(&statement->ifs);
700 case STATEMENT_SWITCH:
701 print_switch_statement(&statement->switchs);
703 case STATEMENT_CASE_LABEL:
704 print_case_label(&statement->case_label);
706 case STATEMENT_DECLARATION:
707 print_declaration_statement(&statement->declaration);
709 case STATEMENT_WHILE:
710 print_while_statement(&statement->whiles);
712 case STATEMENT_DO_WHILE:
713 print_do_while_statement(&statement->do_while);
716 print_for_statement(&statement->fors);
719 print_asm_statement(&statement->asms);
721 case STATEMENT_INVALID:
722 fprintf(out, "*invalid statement*");
727 static void print_storage_class(unsigned storage_class)
729 switch((storage_class_tag_t) storage_class) {
730 case STORAGE_CLASS_ENUM_ENTRY:
731 case STORAGE_CLASS_NONE:
733 case STORAGE_CLASS_TYPEDEF: fputs("typedef ", out); break;
734 case STORAGE_CLASS_EXTERN: fputs("extern ", out); break;
735 case STORAGE_CLASS_STATIC: fputs("static ", out); break;
736 case STORAGE_CLASS_AUTO: fputs("auto ", out); break;
737 case STORAGE_CLASS_REGISTER: fputs("register ", out); break;
738 case STORAGE_CLASS_THREAD: fputs("__thread", out); break;
739 case STORAGE_CLASS_THREAD_EXTERN: fputs("extern __thread", out); break;
740 case STORAGE_CLASS_THREAD_STATIC: fputs("static __thread", out); break;
744 void print_initializer(const initializer_t *initializer)
746 if(initializer->kind == INITIALIZER_VALUE) {
747 const initializer_value_t *value = &initializer->value;
748 print_expression(value->value);
752 assert(initializer->kind == INITIALIZER_LIST);
754 const initializer_list_t *list = &initializer->list;
756 for(size_t i = 0 ; i < list->len; ++i) {
760 print_initializer(list->initializers[i]);
765 static void print_normal_declaration(const declaration_t *declaration)
767 print_storage_class(declaration->storage_class);
768 if(declaration->is_inline) {
769 if (declaration->modifiers & DM_FORCEINLINE)
770 fputs("__forceinline ", out);
772 fputs("inline ", out);
774 print_type_ext(declaration->type, declaration->symbol,
775 &declaration->scope);
777 if(declaration->type->kind == TYPE_FUNCTION) {
778 if(declaration->init.statement != NULL) {
780 print_statement(declaration->init.statement);
783 } else if(declaration->init.initializer != NULL) {
785 print_initializer(declaration->init.initializer);
790 void print_declaration(const declaration_t *declaration)
792 if(declaration->namespc != NAMESPACE_NORMAL &&
793 declaration->symbol == NULL)
796 switch(declaration->namespc) {
797 case NAMESPACE_NORMAL:
798 print_normal_declaration(declaration);
800 case NAMESPACE_STRUCT:
801 fputs("struct ", out);
802 fputs(declaration->symbol->string, out);
804 print_compound_definition(declaration);
807 case NAMESPACE_UNION:
808 fputs("union ", out);
809 fputs(declaration->symbol->string, out);
811 print_compound_definition(declaration);
816 fputs(declaration->symbol->string, out);
818 print_enum_definition(declaration);
824 void print_ast(const translation_unit_t *unit)
828 declaration_t *declaration = unit->scope.declarations;
829 for( ; declaration != NULL; declaration = declaration->next) {
830 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY)
832 if(declaration->namespc != NAMESPACE_NORMAL &&
833 declaration->symbol == NULL)
837 print_declaration(declaration);
842 bool is_constant_expression(const expression_t *expression)
844 switch(expression->kind) {
847 case EXPR_STRING_LITERAL:
848 case EXPR_WIDE_STRING_LITERAL:
850 case EXPR_CLASSIFY_TYPE:
852 case EXPR_PRETTY_FUNCTION:
855 case EXPR_BUILTIN_CONSTANT_P:
858 case EXPR_BUILTIN_SYMBOL:
859 case EXPR_BUILTIN_PREFETCH:
865 case EXPR_UNARY_POSTFIX_INCREMENT:
866 case EXPR_UNARY_POSTFIX_DECREMENT:
867 case EXPR_UNARY_PREFIX_INCREMENT:
868 case EXPR_UNARY_PREFIX_DECREMENT:
869 case EXPR_UNARY_BITFIELD_EXTRACT:
870 case EXPR_UNARY_ASSUME: /* has VOID type */
871 case EXPR_BINARY_ASSIGN:
872 case EXPR_BINARY_MUL_ASSIGN:
873 case EXPR_BINARY_DIV_ASSIGN:
874 case EXPR_BINARY_MOD_ASSIGN:
875 case EXPR_BINARY_ADD_ASSIGN:
876 case EXPR_BINARY_SUB_ASSIGN:
877 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
878 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
879 case EXPR_BINARY_BITWISE_AND_ASSIGN:
880 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
881 case EXPR_BINARY_BITWISE_OR_ASSIGN:
882 case EXPR_BINARY_COMMA:
885 case EXPR_UNARY_NEGATE:
886 case EXPR_UNARY_PLUS:
887 case EXPR_UNARY_BITWISE_NEGATE:
889 case EXPR_UNARY_DEREFERENCE:
890 case EXPR_UNARY_TAKE_ADDRESS:
891 case EXPR_UNARY_CAST:
892 case EXPR_UNARY_CAST_IMPLICIT:
893 return is_constant_expression(expression->unary.value);
895 case EXPR_BINARY_ADD:
896 case EXPR_BINARY_SUB:
897 case EXPR_BINARY_MUL:
898 case EXPR_BINARY_DIV:
899 case EXPR_BINARY_MOD:
900 case EXPR_BINARY_EQUAL:
901 case EXPR_BINARY_NOTEQUAL:
902 case EXPR_BINARY_LESS:
903 case EXPR_BINARY_LESSEQUAL:
904 case EXPR_BINARY_GREATER:
905 case EXPR_BINARY_GREATEREQUAL:
906 case EXPR_BINARY_BITWISE_AND:
907 case EXPR_BINARY_BITWISE_OR:
908 case EXPR_BINARY_BITWISE_XOR:
909 case EXPR_BINARY_LOGICAL_AND:
910 case EXPR_BINARY_LOGICAL_OR:
911 case EXPR_BINARY_SHIFTLEFT:
912 case EXPR_BINARY_SHIFTRIGHT:
913 case EXPR_BINARY_BUILTIN_EXPECT:
914 case EXPR_BINARY_ISGREATER:
915 case EXPR_BINARY_ISGREATEREQUAL:
916 case EXPR_BINARY_ISLESS:
917 case EXPR_BINARY_ISLESSEQUAL:
918 case EXPR_BINARY_ISLESSGREATER:
919 case EXPR_BINARY_ISUNORDERED:
920 return is_constant_expression(expression->binary.left)
921 && is_constant_expression(expression->binary.right);
923 case EXPR_CONDITIONAL:
924 /* TODO: not correct, we only have to test expressions which are
925 * evaluated, which means either the true or false part might be not
927 return is_constant_expression(expression->conditional.condition)
928 && is_constant_expression(expression->conditional.true_expression)
929 && is_constant_expression(expression->conditional.false_expression);
931 case EXPR_ARRAY_ACCESS:
932 return is_constant_expression(expression->array_access.array_ref)
933 && is_constant_expression(expression->array_access.index);
935 case EXPR_REFERENCE: {
936 declaration_t *declaration = expression->reference.declaration;
937 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY)
947 panic("invalid expression found (is constant expression)");
953 obstack_init(&ast_obstack);
958 obstack_free(&ast_obstack, NULL);
961 void ast_set_output(FILE *stream)
964 type_set_output(stream);
967 void* (allocate_ast) (size_t size)
969 return _allocate_ast(size);