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.type == 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.type) {
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.type) {
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);
227 panic("invalid unary expression found");
230 print_expression(unexpr->value);
234 static void print_reference_expression(const reference_expression_t *ref)
236 fprintf(out, "%s", ref->declaration->symbol->string);
239 static void print_array_expression(const array_access_expression_t *expression)
241 if(!expression->flipped) {
243 print_expression(expression->array_ref);
245 print_expression(expression->index);
249 print_expression(expression->index);
251 print_expression(expression->array_ref);
256 static void print_sizeof_expression(const sizeof_expression_t *expression)
258 fputs("sizeof", out);
259 if(expression->size_expression != NULL) {
261 print_expression(expression->size_expression);
265 print_type(expression->type);
270 static void print_builtin_symbol(const builtin_symbol_expression_t *expression)
272 fputs(expression->symbol->string, out);
275 static void print_conditional(const conditional_expression_t *expression)
278 print_expression(expression->condition);
280 print_expression(expression->true_expression);
282 print_expression(expression->false_expression);
286 static void print_va_start(const va_start_expression_t *const expression)
288 fputs("__builtin_va_start(", out);
289 print_expression(expression->ap);
291 fputs(expression->parameter->symbol->string, out);
295 static void print_va_arg(const va_arg_expression_t *expression)
297 fputs("__builtin_va_arg(", out);
298 print_expression(expression->ap);
300 print_type(expression->expression.datatype);
304 static void print_select(const select_expression_t *expression)
306 print_expression(expression->compound);
307 if(expression->compound->base.datatype == NULL ||
308 expression->compound->base.datatype->type == TYPE_POINTER) {
313 fputs(expression->symbol->string, out);
316 static void print_classify_type_expression(
317 const classify_type_expression_t *const expr)
319 fputs("__builtin_classify_type(", out);
320 print_expression(expr->type_expression);
324 void print_expression(const expression_t *expression)
326 switch(expression->type) {
329 fprintf(out, "*invalid expression*");
332 print_const(&expression->conste);
335 case EXPR_PRETTY_FUNCTION:
336 case EXPR_STRING_LITERAL:
337 print_string_literal(&expression->string);
339 case EXPR_WIDE_STRING_LITERAL:
340 print_wide_string_literal(&expression->wide_string);
343 print_call_expression(&expression->call);
346 print_binary_expression(&expression->binary);
349 print_reference_expression(&expression->reference);
351 case EXPR_ARRAY_ACCESS:
352 print_array_expression(&expression->array_access);
355 print_unary_expression(&expression->unary);
358 print_sizeof_expression(&expression->sizeofe);
360 case EXPR_BUILTIN_SYMBOL:
361 print_builtin_symbol(&expression->builtin_symbol);
363 case EXPR_CONDITIONAL:
364 print_conditional(&expression->conditional);
367 print_va_start(&expression->va_starte);
369 print_va_arg(&expression->va_arge);
372 print_select(&expression->select);
374 case EXPR_CLASSIFY_TYPE:
375 print_classify_type_expression(&expression->classify_type);
381 fprintf(out, "some expression of type %d", (int) expression->type);
386 static void print_compound_statement(const compound_statement_t *block)
391 statement_t *statement = block->statements;
392 while(statement != NULL) {
394 print_statement(statement);
396 statement = statement->base.next;
403 static void print_return_statement(const return_statement_t *statement)
405 fprintf(out, "return ");
406 if(statement->return_value != NULL)
407 print_expression(statement->return_value);
411 static void print_expression_statement(const expression_statement_t *statement)
413 print_expression(statement->expression);
417 static void print_goto_statement(const goto_statement_t *statement)
419 fprintf(out, "goto ");
420 fputs(statement->label->symbol->string, out);
421 fprintf(stderr, "(%p)", (void*) statement->label);
425 static void print_label_statement(const label_statement_t *statement)
427 fprintf(stderr, "(%p)", (void*) statement->label);
428 fprintf(out, "%s:\n", statement->label->symbol->string);
429 if(statement->label_statement != NULL) {
430 print_statement(statement->label_statement);
434 static void print_if_statement(const if_statement_t *statement)
437 print_expression(statement->condition);
439 if(statement->true_statement != NULL) {
440 print_statement(statement->true_statement);
443 if(statement->false_statement != NULL) {
446 print_statement(statement->false_statement);
450 static void print_switch_statement(const switch_statement_t *statement)
452 fputs("switch(", out);
453 print_expression(statement->expression);
455 print_statement(statement->body);
458 static void print_case_label(const case_label_statement_t *statement)
460 if(statement->expression == NULL) {
461 fputs("default:\n", out);
464 print_expression(statement->expression);
467 print_statement(statement->label_statement);
470 static void print_declaration_statement(
471 const declaration_statement_t *statement)
474 declaration_t *declaration = statement->declarations_begin;
475 for( ; declaration != statement->declarations_end->next;
476 declaration = declaration->next) {
482 print_declaration(declaration);
487 static void print_while_statement(const while_statement_t *statement)
489 fputs("while(", out);
490 print_expression(statement->condition);
492 print_statement(statement->body);
495 static void print_do_while_statement(const do_while_statement_t *statement)
498 print_statement(statement->body);
500 fputs("while(", out);
501 print_expression(statement->condition);
505 static void print_for_statement(const for_statement_t *statement)
508 if(statement->context.declarations != NULL) {
509 assert(statement->initialisation == NULL);
510 print_declaration(statement->context.declarations);
511 if(statement->context.declarations->next != NULL) {
512 panic("multiple declarations in for statement not supported yet");
516 if(statement->initialisation) {
517 print_expression(statement->initialisation);
521 if(statement->condition != NULL) {
522 print_expression(statement->condition);
525 if(statement->step != NULL) {
526 print_expression(statement->step);
529 print_statement(statement->body);
532 static void print_asm_constraints(asm_constraint_t *constraints)
534 asm_constraint_t *constraint = constraints;
535 for( ; constraint != NULL; constraint = constraint->next) {
536 if(constraint != constraints)
539 if(constraint->symbol) {
540 fprintf(out, "[%s] ", constraint->symbol->string);
542 print_quoted_string(constraint->constraints);
544 print_expression(constraint->expression);
549 static void print_asm_clobbers(asm_clobber_t *clobbers)
551 asm_clobber_t *clobber = clobbers;
552 for( ; clobber != NULL; clobber = clobber->next) {
553 if(clobber != clobbers)
556 print_quoted_string(clobber->clobber);
560 static void print_asm_statement(const asm_statement_t *statement)
563 if(statement->is_volatile) {
564 fputs("volatile ", out);
567 print_quoted_string(statement->asm_text);
568 if(statement->inputs == NULL && statement->outputs == NULL
569 && statement->clobbers == NULL)
570 goto end_of_print_asm_statement;
573 print_asm_constraints(statement->inputs);
574 if(statement->outputs == NULL && statement->clobbers == NULL)
575 goto end_of_print_asm_statement;
578 print_asm_constraints(statement->outputs);
579 if(statement->clobbers == NULL)
580 goto end_of_print_asm_statement;
583 print_asm_clobbers(statement->clobbers);
585 end_of_print_asm_statement:
589 void print_statement(const statement_t *statement)
591 switch(statement->type) {
592 case STATEMENT_COMPOUND:
593 print_compound_statement(&statement->compound);
595 case STATEMENT_RETURN:
596 print_return_statement(&statement->returns);
598 case STATEMENT_EXPRESSION:
599 print_expression_statement(&statement->expression);
601 case STATEMENT_LABEL:
602 print_label_statement(&statement->label);
605 print_goto_statement(&statement->gotos);
607 case STATEMENT_CONTINUE:
608 fputs("continue;\n", out);
610 case STATEMENT_BREAK:
611 fputs("break;\n", out);
614 print_if_statement(&statement->ifs);
616 case STATEMENT_SWITCH:
617 print_switch_statement(&statement->switchs);
619 case STATEMENT_CASE_LABEL:
620 print_case_label(&statement->case_label);
622 case STATEMENT_DECLARATION:
623 print_declaration_statement(&statement->declaration);
625 case STATEMENT_WHILE:
626 print_while_statement(&statement->whiles);
628 case STATEMENT_DO_WHILE:
629 print_do_while_statement(&statement->do_while);
632 print_for_statement(&statement->fors);
635 print_asm_statement(&statement->asms);
637 case STATEMENT_INVALID:
638 fprintf(out, "*invalid statement*");
643 static void print_storage_class(unsigned storage_class)
645 switch((storage_class_tag_t) storage_class) {
646 case STORAGE_CLASS_ENUM_ENTRY:
647 case STORAGE_CLASS_NONE:
649 case STORAGE_CLASS_TYPEDEF: fputs("typedef ", out); break;
650 case STORAGE_CLASS_EXTERN: fputs("extern ", out); break;
651 case STORAGE_CLASS_STATIC: fputs("static ", out); break;
652 case STORAGE_CLASS_AUTO: fputs("auto ", out); break;
653 case STORAGE_CLASS_REGISTER: fputs("register ", out); break;
654 case STORAGE_CLASS_THREAD: fputs("__thread", out); break;
655 case STORAGE_CLASS_THREAD_EXTERN: fputs("extern __thread", out); break;
656 case STORAGE_CLASS_THREAD_STATIC: fputs("static __thread", out); break;
660 void print_initializer(const initializer_t *initializer)
662 if(initializer->type == INITIALIZER_VALUE) {
663 const initializer_value_t *value = &initializer->value;
664 print_expression(value->value);
668 assert(initializer->type == INITIALIZER_LIST);
670 const initializer_list_t *list = &initializer->list;
672 for(size_t i = 0 ; i < list->len; ++i) {
676 print_initializer(list->initializers[i]);
681 static void print_normal_declaration(const declaration_t *declaration)
683 print_storage_class(declaration->storage_class);
684 if(declaration->is_inline) {
685 if (declaration->decl_modifiers & DM_FORCEINLINE)
686 fputs("__forceinline ", out);
688 fputs("inline ", out);
690 print_type_ext(declaration->type, declaration->symbol,
691 &declaration->context);
693 if(declaration->type->type == TYPE_FUNCTION) {
694 if(declaration->init.statement != NULL) {
696 print_statement(declaration->init.statement);
699 } else if(declaration->init.initializer != NULL) {
701 print_initializer(declaration->init.initializer);
706 void print_declaration(const declaration_t *declaration)
708 if(declaration->namespc != NAMESPACE_NORMAL &&
709 declaration->symbol == NULL)
712 switch(declaration->namespc) {
713 case NAMESPACE_NORMAL:
714 print_normal_declaration(declaration);
716 case NAMESPACE_STRUCT:
717 fputs("struct ", out);
718 fputs(declaration->symbol->string, out);
720 print_compound_definition(declaration);
723 case NAMESPACE_UNION:
724 fputs("union ", out);
725 fputs(declaration->symbol->string, out);
727 print_compound_definition(declaration);
732 fputs(declaration->symbol->string, out);
734 print_enum_definition(declaration);
740 void print_ast(const translation_unit_t *unit)
744 declaration_t *declaration = unit->context.declarations;
745 for( ; declaration != NULL; declaration = declaration->next) {
746 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY)
748 if(declaration->namespc != NAMESPACE_NORMAL &&
749 declaration->symbol == NULL)
753 print_declaration(declaration);
758 bool is_constant_expression(const expression_t *expression)
760 switch(expression->type) {
763 case EXPR_STRING_LITERAL:
764 case EXPR_WIDE_STRING_LITERAL:
766 case EXPR_CLASSIFY_TYPE:
768 case EXPR_PRETTY_FUNCTION:
772 case EXPR_BUILTIN_SYMBOL:
778 case EXPR_UNARY_POSTFIX_INCREMENT:
779 case EXPR_UNARY_POSTFIX_DECREMENT:
780 case EXPR_UNARY_PREFIX_INCREMENT:
781 case EXPR_UNARY_PREFIX_DECREMENT:
782 case EXPR_BINARY_ASSIGN:
783 case EXPR_BINARY_MUL_ASSIGN:
784 case EXPR_BINARY_DIV_ASSIGN:
785 case EXPR_BINARY_MOD_ASSIGN:
786 case EXPR_BINARY_ADD_ASSIGN:
787 case EXPR_BINARY_SUB_ASSIGN:
788 case EXPR_BINARY_SHIFTLEFT_ASSIGN:
789 case EXPR_BINARY_SHIFTRIGHT_ASSIGN:
790 case EXPR_BINARY_BITWISE_AND_ASSIGN:
791 case EXPR_BINARY_BITWISE_XOR_ASSIGN:
792 case EXPR_BINARY_BITWISE_OR_ASSIGN:
793 case EXPR_BINARY_COMMA:
796 case EXPR_UNARY_NEGATE:
797 case EXPR_UNARY_PLUS:
798 case EXPR_UNARY_BITWISE_NEGATE:
800 case EXPR_UNARY_DEREFERENCE:
801 case EXPR_UNARY_TAKE_ADDRESS:
802 case EXPR_UNARY_CAST:
803 case EXPR_UNARY_CAST_IMPLICIT:
804 return is_constant_expression(expression->unary.value);
806 case EXPR_BINARY_ADD:
807 case EXPR_BINARY_SUB:
808 case EXPR_BINARY_MUL:
809 case EXPR_BINARY_DIV:
810 case EXPR_BINARY_MOD:
811 case EXPR_BINARY_EQUAL:
812 case EXPR_BINARY_NOTEQUAL:
813 case EXPR_BINARY_LESS:
814 case EXPR_BINARY_LESSEQUAL:
815 case EXPR_BINARY_GREATER:
816 case EXPR_BINARY_GREATEREQUAL:
817 case EXPR_BINARY_BITWISE_AND:
818 case EXPR_BINARY_BITWISE_OR:
819 case EXPR_BINARY_BITWISE_XOR:
820 case EXPR_BINARY_LOGICAL_AND:
821 case EXPR_BINARY_LOGICAL_OR:
822 case EXPR_BINARY_SHIFTLEFT:
823 case EXPR_BINARY_SHIFTRIGHT:
824 case EXPR_BINARY_BUILTIN_EXPECT:
825 case EXPR_BINARY_ISGREATER:
826 case EXPR_BINARY_ISGREATEREQUAL:
827 case EXPR_BINARY_ISLESS:
828 case EXPR_BINARY_ISLESSEQUAL:
829 case EXPR_BINARY_ISLESSGREATER:
830 case EXPR_BINARY_ISUNORDERED:
831 return is_constant_expression(expression->binary.left)
832 && is_constant_expression(expression->binary.right);
834 case EXPR_CONDITIONAL:
835 /* TODO: not correct, we only have to test expressions which are
836 * evaluated, which means either the true or false part might be not
838 return is_constant_expression(expression->conditional.condition)
839 && is_constant_expression(expression->conditional.true_expression)
840 && is_constant_expression(expression->conditional.false_expression);
842 case EXPR_ARRAY_ACCESS:
843 return is_constant_expression(expression->array_access.array_ref)
844 && is_constant_expression(expression->array_access.index);
846 case EXPR_REFERENCE: {
847 declaration_t *declaration = expression->reference.declaration;
848 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY)
858 panic("invalid expression found (is constant expression)");
864 obstack_init(&ast_obstack);
869 obstack_free(&ast_obstack, NULL);
872 void ast_set_output(FILE *stream)
875 type_set_output(stream);
878 void* (allocate_ast) (size_t size)
880 return _allocate_ast(size);