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_builtin_symbol(const builtin_symbol_expression_t *expression)
275 fputs(expression->symbol->string, out);
278 static void print_conditional(const conditional_expression_t *expression)
281 print_expression(expression->condition);
283 print_expression(expression->true_expression);
285 print_expression(expression->false_expression);
289 static void print_va_start(const va_start_expression_t *const expression)
291 fputs("__builtin_va_start(", out);
292 print_expression(expression->ap);
294 fputs(expression->parameter->symbol->string, out);
298 static void print_va_arg(const va_arg_expression_t *expression)
300 fputs("__builtin_va_arg(", out);
301 print_expression(expression->ap);
303 print_type(expression->expression.datatype);
307 static void print_select(const select_expression_t *expression)
309 print_expression(expression->compound);
310 if(expression->compound->base.datatype == NULL ||
311 expression->compound->base.datatype->kind == TYPE_POINTER) {
316 fputs(expression->symbol->string, out);
319 static void print_classify_type_expression(
320 const classify_type_expression_t *const expr)
322 fputs("__builtin_classify_type(", out);
323 print_expression(expr->type_expression);
327 void print_expression(const expression_t *expression)
329 switch(expression->kind) {
332 fprintf(out, "*invalid expression*");
335 print_const(&expression->conste);
338 case EXPR_PRETTY_FUNCTION:
339 case EXPR_STRING_LITERAL:
340 print_string_literal(&expression->string);
342 case EXPR_WIDE_STRING_LITERAL:
343 print_wide_string_literal(&expression->wide_string);
346 print_call_expression(&expression->call);
349 print_binary_expression(&expression->binary);
352 print_reference_expression(&expression->reference);
354 case EXPR_ARRAY_ACCESS:
355 print_array_expression(&expression->array_access);
358 print_unary_expression(&expression->unary);
361 print_sizeof_expression(&expression->sizeofe);
363 case EXPR_BUILTIN_SYMBOL:
364 print_builtin_symbol(&expression->builtin_symbol);
366 case EXPR_CONDITIONAL:
367 print_conditional(&expression->conditional);
370 print_va_start(&expression->va_starte);
372 print_va_arg(&expression->va_arge);
375 print_select(&expression->select);
377 case EXPR_CLASSIFY_TYPE:
378 print_classify_type_expression(&expression->classify_type);
384 fprintf(out, "some expression of type %d", (int) expression->kind);
389 static void print_compound_statement(const compound_statement_t *block)
394 statement_t *statement = block->statements;
395 while(statement != NULL) {
397 print_statement(statement);
399 statement = statement->base.next;
406 static void print_return_statement(const return_statement_t *statement)
408 fprintf(out, "return ");
409 if(statement->return_value != NULL)
410 print_expression(statement->return_value);
414 static void print_expression_statement(const expression_statement_t *statement)
416 print_expression(statement->expression);
420 static void print_goto_statement(const goto_statement_t *statement)
422 fprintf(out, "goto ");
423 fputs(statement->label->symbol->string, out);
424 fprintf(stderr, "(%p)", (void*) statement->label);
428 static void print_label_statement(const label_statement_t *statement)
430 fprintf(stderr, "(%p)", (void*) statement->label);
431 fprintf(out, "%s:\n", statement->label->symbol->string);
432 if(statement->label_statement != NULL) {
433 print_statement(statement->label_statement);
437 static void print_if_statement(const if_statement_t *statement)
440 print_expression(statement->condition);
442 if(statement->true_statement != NULL) {
443 print_statement(statement->true_statement);
446 if(statement->false_statement != NULL) {
449 print_statement(statement->false_statement);
453 static void print_switch_statement(const switch_statement_t *statement)
455 fputs("switch(", out);
456 print_expression(statement->expression);
458 print_statement(statement->body);
461 static void print_case_label(const case_label_statement_t *statement)
463 if(statement->expression == NULL) {
464 fputs("default:\n", out);
467 print_expression(statement->expression);
470 print_statement(statement->label_statement);
473 static void print_declaration_statement(
474 const declaration_statement_t *statement)
477 declaration_t *declaration = statement->declarations_begin;
478 for( ; declaration != statement->declarations_end->next;
479 declaration = declaration->next) {
485 print_declaration(declaration);
490 static void print_while_statement(const while_statement_t *statement)
492 fputs("while(", out);
493 print_expression(statement->condition);
495 print_statement(statement->body);
498 static void print_do_while_statement(const do_while_statement_t *statement)
501 print_statement(statement->body);
503 fputs("while(", out);
504 print_expression(statement->condition);
508 static void print_for_statement(const for_statement_t *statement)
511 if(statement->context.declarations != NULL) {
512 assert(statement->initialisation == NULL);
513 print_declaration(statement->context.declarations);
514 if(statement->context.declarations->next != NULL) {
515 panic("multiple declarations in for statement not supported yet");
519 if(statement->initialisation) {
520 print_expression(statement->initialisation);
524 if(statement->condition != NULL) {
525 print_expression(statement->condition);
528 if(statement->step != NULL) {
529 print_expression(statement->step);
532 print_statement(statement->body);
535 static void print_asm_constraints(asm_constraint_t *constraints)
537 asm_constraint_t *constraint = constraints;
538 for( ; constraint != NULL; constraint = constraint->next) {
539 if(constraint != constraints)
542 if(constraint->symbol) {
543 fprintf(out, "[%s] ", constraint->symbol->string);
545 print_quoted_string(constraint->constraints);
547 print_expression(constraint->expression);
552 static void print_asm_clobbers(asm_clobber_t *clobbers)
554 asm_clobber_t *clobber = clobbers;
555 for( ; clobber != NULL; clobber = clobber->next) {
556 if(clobber != clobbers)
559 print_quoted_string(clobber->clobber);
563 static void print_asm_statement(const asm_statement_t *statement)
566 if(statement->is_volatile) {
567 fputs("volatile ", out);
570 print_quoted_string(statement->asm_text);
571 if(statement->inputs == NULL && statement->outputs == NULL
572 && statement->clobbers == NULL)
573 goto end_of_print_asm_statement;
576 print_asm_constraints(statement->inputs);
577 if(statement->outputs == NULL && statement->clobbers == NULL)
578 goto end_of_print_asm_statement;
581 print_asm_constraints(statement->outputs);
582 if(statement->clobbers == NULL)
583 goto end_of_print_asm_statement;
586 print_asm_clobbers(statement->clobbers);
588 end_of_print_asm_statement:
592 void print_statement(const statement_t *statement)
594 switch(statement->kind) {
595 case STATEMENT_COMPOUND:
596 print_compound_statement(&statement->compound);
598 case STATEMENT_RETURN:
599 print_return_statement(&statement->returns);
601 case STATEMENT_EXPRESSION:
602 print_expression_statement(&statement->expression);
604 case STATEMENT_LABEL:
605 print_label_statement(&statement->label);
608 print_goto_statement(&statement->gotos);
610 case STATEMENT_CONTINUE:
611 fputs("continue;\n", out);
613 case STATEMENT_BREAK:
614 fputs("break;\n", out);
617 print_if_statement(&statement->ifs);
619 case STATEMENT_SWITCH:
620 print_switch_statement(&statement->switchs);
622 case STATEMENT_CASE_LABEL:
623 print_case_label(&statement->case_label);
625 case STATEMENT_DECLARATION:
626 print_declaration_statement(&statement->declaration);
628 case STATEMENT_WHILE:
629 print_while_statement(&statement->whiles);
631 case STATEMENT_DO_WHILE:
632 print_do_while_statement(&statement->do_while);
635 print_for_statement(&statement->fors);
638 print_asm_statement(&statement->asms);
640 case STATEMENT_INVALID:
641 fprintf(out, "*invalid statement*");
646 static void print_storage_class(unsigned storage_class)
648 switch((storage_class_tag_t) storage_class) {
649 case STORAGE_CLASS_ENUM_ENTRY:
650 case STORAGE_CLASS_NONE:
652 case STORAGE_CLASS_TYPEDEF: fputs("typedef ", out); break;
653 case STORAGE_CLASS_EXTERN: fputs("extern ", out); break;
654 case STORAGE_CLASS_STATIC: fputs("static ", out); break;
655 case STORAGE_CLASS_AUTO: fputs("auto ", out); break;
656 case STORAGE_CLASS_REGISTER: fputs("register ", out); break;
657 case STORAGE_CLASS_THREAD: fputs("__thread", out); break;
658 case STORAGE_CLASS_THREAD_EXTERN: fputs("extern __thread", out); break;
659 case STORAGE_CLASS_THREAD_STATIC: fputs("static __thread", out); break;
663 void print_initializer(const initializer_t *initializer)
665 if(initializer->type == INITIALIZER_VALUE) {
666 const initializer_value_t *value = &initializer->value;
667 print_expression(value->value);
671 assert(initializer->type == INITIALIZER_LIST);
673 const initializer_list_t *list = &initializer->list;
675 for(size_t i = 0 ; i < list->len; ++i) {
679 print_initializer(list->initializers[i]);
684 static void print_normal_declaration(const declaration_t *declaration)
686 print_storage_class(declaration->storage_class);
687 if(declaration->is_inline) {
688 if (declaration->decl_modifiers & DM_FORCEINLINE)
689 fputs("__forceinline ", out);
691 fputs("inline ", out);
693 print_type_ext(declaration->type, declaration->symbol,
694 &declaration->context);
696 if(declaration->type->kind == TYPE_FUNCTION) {
697 if(declaration->init.statement != NULL) {
699 print_statement(declaration->init.statement);
702 } else if(declaration->init.initializer != NULL) {
704 print_initializer(declaration->init.initializer);
709 void print_declaration(const declaration_t *declaration)
711 if(declaration->namespc != NAMESPACE_NORMAL &&
712 declaration->symbol == NULL)
715 switch(declaration->namespc) {
716 case NAMESPACE_NORMAL:
717 print_normal_declaration(declaration);
719 case NAMESPACE_STRUCT:
720 fputs("struct ", out);
721 fputs(declaration->symbol->string, out);
723 print_compound_definition(declaration);
726 case NAMESPACE_UNION:
727 fputs("union ", out);
728 fputs(declaration->symbol->string, out);
730 print_compound_definition(declaration);
735 fputs(declaration->symbol->string, out);
737 print_enum_definition(declaration);
743 void print_ast(const translation_unit_t *unit)
747 declaration_t *declaration = unit->context.declarations;
748 for( ; declaration != NULL; declaration = declaration->next) {
749 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY)
751 if(declaration->namespc != NAMESPACE_NORMAL &&
752 declaration->symbol == NULL)
756 print_declaration(declaration);
761 bool is_constant_expression(const expression_t *expression)
763 switch(expression->kind) {
766 case EXPR_STRING_LITERAL:
767 case EXPR_WIDE_STRING_LITERAL:
769 case EXPR_CLASSIFY_TYPE:
771 case EXPR_PRETTY_FUNCTION:
775 case EXPR_BUILTIN_SYMBOL:
781 case EXPR_UNARY_POSTFIX_INCREMENT:
782 case EXPR_UNARY_POSTFIX_DECREMENT:
783 case EXPR_UNARY_PREFIX_INCREMENT:
784 case EXPR_UNARY_PREFIX_DECREMENT:
785 case EXPR_UNARY_ASSUME: /* has VOID type */
786 case EXPR_BINARY_ASSIGN:
787 case EXPR_BINARY_MUL_ASSIGN:
788 case EXPR_BINARY_DIV_ASSIGN:
789 case EXPR_BINARY_MOD_ASSIGN:
790 case EXPR_BINARY_ADD_ASSIGN:
791 case EXPR_BINARY_SUB_ASSIGN:
792 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
793 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
794 case EXPR_BINARY_BITWISE_AND_ASSIGN:
795 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
796 case EXPR_BINARY_BITWISE_OR_ASSIGN:
797 case EXPR_BINARY_COMMA:
800 case EXPR_UNARY_NEGATE:
801 case EXPR_UNARY_PLUS:
802 case EXPR_UNARY_BITWISE_NEGATE:
804 case EXPR_UNARY_DEREFERENCE:
805 case EXPR_UNARY_TAKE_ADDRESS:
806 case EXPR_UNARY_CAST:
807 case EXPR_UNARY_CAST_IMPLICIT:
808 return is_constant_expression(expression->unary.value);
810 case EXPR_BINARY_ADD:
811 case EXPR_BINARY_SUB:
812 case EXPR_BINARY_MUL:
813 case EXPR_BINARY_DIV:
814 case EXPR_BINARY_MOD:
815 case EXPR_BINARY_EQUAL:
816 case EXPR_BINARY_NOTEQUAL:
817 case EXPR_BINARY_LESS:
818 case EXPR_BINARY_LESSEQUAL:
819 case EXPR_BINARY_GREATER:
820 case EXPR_BINARY_GREATEREQUAL:
821 case EXPR_BINARY_BITWISE_AND:
822 case EXPR_BINARY_BITWISE_OR:
823 case EXPR_BINARY_BITWISE_XOR:
824 case EXPR_BINARY_LOGICAL_AND:
825 case EXPR_BINARY_LOGICAL_OR:
826 case EXPR_BINARY_SHIFTLEFT:
827 case EXPR_BINARY_SHIFTRIGHT:
828 case EXPR_BINARY_BUILTIN_EXPECT:
829 case EXPR_BINARY_ISGREATER:
830 case EXPR_BINARY_ISGREATEREQUAL:
831 case EXPR_BINARY_ISLESS:
832 case EXPR_BINARY_ISLESSEQUAL:
833 case EXPR_BINARY_ISLESSGREATER:
834 case EXPR_BINARY_ISUNORDERED:
835 return is_constant_expression(expression->binary.left)
836 && is_constant_expression(expression->binary.right);
838 case EXPR_CONDITIONAL:
839 /* TODO: not correct, we only have to test expressions which are
840 * evaluated, which means either the true or false part might be not
842 return is_constant_expression(expression->conditional.condition)
843 && is_constant_expression(expression->conditional.true_expression)
844 && is_constant_expression(expression->conditional.false_expression);
846 case EXPR_ARRAY_ACCESS:
847 return is_constant_expression(expression->array_access.array_ref)
848 && is_constant_expression(expression->array_access.index);
850 case EXPR_REFERENCE: {
851 declaration_t *declaration = expression->reference.declaration;
852 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY)
862 panic("invalid expression found (is constant expression)");
868 obstack_init(&ast_obstack);
873 obstack_free(&ast_obstack, NULL);
876 void ast_set_output(FILE *stream)
879 type_set_output(stream);
882 void* (allocate_ast) (size_t size)
884 return _allocate_ast(size);