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)
144 print_expression(binexpr->left);
146 switch(binexpr->expression.type) {
147 case EXPR_BINARY_COMMA: fputs(",", out); break;
148 case EXPR_BINARY_ASSIGN: fputs("=", out); break;
149 case EXPR_BINARY_ADD: fputs("+", out); break;
150 case EXPR_BINARY_SUB: fputs("-", out); break;
151 case EXPR_BINARY_MUL: fputs("*", out); break;
152 case EXPR_BINARY_MOD: fputs("%", out); break;
153 case EXPR_BINARY_DIV: fputs("/", out); break;
154 case EXPR_BINARY_BITWISE_OR: fputs("|", out); break;
155 case EXPR_BINARY_BITWISE_AND: fputs("&", out); break;
156 case EXPR_BINARY_BITWISE_XOR: fputs("^", out); break;
157 case EXPR_BINARY_LOGICAL_OR: fputs("||", out); break;
158 case EXPR_BINARY_LOGICAL_AND: fputs("&&", out); break;
159 case EXPR_BINARY_NOTEQUAL: fputs("!=", out); break;
160 case EXPR_BINARY_EQUAL: fputs("==", out); break;
161 case EXPR_BINARY_LESS: fputs("<", out); break;
162 case EXPR_BINARY_LESSEQUAL: fputs("<=", out); break;
163 case EXPR_BINARY_GREATER: fputs(">", out); break;
164 case EXPR_BINARY_GREATEREQUAL: fputs(">=", out); break;
165 case EXPR_BINARY_SHIFTLEFT: fputs("<<", out); break;
166 case EXPR_BINARY_SHIFTRIGHT: fputs(">>", out); break;
168 case EXPR_BINARY_ADD_ASSIGN: fputs("+=", out); break;
169 case EXPR_BINARY_SUB_ASSIGN: fputs("-=", out); break;
170 case EXPR_BINARY_MUL_ASSIGN: fputs("*=", out); break;
171 case EXPR_BINARY_MOD_ASSIGN: fputs("%=", out); break;
172 case EXPR_BINARY_DIV_ASSIGN: fputs("/=", out); break;
173 case EXPR_BINARY_BITWISE_OR_ASSIGN: fputs("|=", out); break;
174 case EXPR_BINARY_BITWISE_AND_ASSIGN: fputs("&=", out); break;
175 case EXPR_BINARY_BITWISE_XOR_ASSIGN: fputs("^=", out); break;
176 case EXPR_BINARY_SHIFTLEFT_ASSIGN: fputs("<<=", out); break;
177 case EXPR_BINARY_SHIFTRIGHT_ASSIGN: fputs(">>=", out); break;
178 default: panic("invalid binexpression found");
181 print_expression(binexpr->right);
185 static void print_unary_expression(const unary_expression_t *unexpr)
187 switch(unexpr->expression.type) {
188 case EXPR_UNARY_NEGATE: fputs("-", out); break;
189 case EXPR_UNARY_PLUS: fputs("+", out); break;
190 case EXPR_UNARY_NOT: fputs("!", out); break;
191 case EXPR_UNARY_BITWISE_NEGATE: fputs("~", out); break;
192 case EXPR_UNARY_PREFIX_INCREMENT: fputs("++", out); break;
193 case EXPR_UNARY_PREFIX_DECREMENT: fputs("--", out); break;
194 case EXPR_UNARY_DEREFERENCE: fputs("*", out); break;
195 case EXPR_UNARY_TAKE_ADDRESS: fputs("&", out); break;
197 case EXPR_UNARY_POSTFIX_INCREMENT:
199 print_expression(unexpr->value);
203 case EXPR_UNARY_POSTFIX_DECREMENT:
205 print_expression(unexpr->value);
209 case EXPR_UNARY_CAST:
211 print_type(unexpr->expression.datatype);
214 case EXPR_UNARY_CAST_IMPLICIT:
215 print_expression(unexpr->value);
218 panic("invalid unary expression found");
221 print_expression(unexpr->value);
225 static void print_reference_expression(const reference_expression_t *ref)
227 fprintf(out, "%s", ref->declaration->symbol->string);
230 static void print_array_expression(const array_access_expression_t *expression)
232 if(!expression->flipped) {
234 print_expression(expression->array_ref);
236 print_expression(expression->index);
240 print_expression(expression->index);
242 print_expression(expression->array_ref);
247 static void print_sizeof_expression(const sizeof_expression_t *expression)
249 fputs("sizeof", out);
250 if(expression->size_expression != NULL) {
252 print_expression(expression->size_expression);
256 print_type(expression->type);
261 static void print_builtin_symbol(const builtin_symbol_expression_t *expression)
263 fputs(expression->symbol->string, out);
266 static void print_conditional(const conditional_expression_t *expression)
269 print_expression(expression->condition);
271 print_expression(expression->true_expression);
273 print_expression(expression->false_expression);
277 static void print_va_start(const va_start_expression_t *const expression)
279 fputs("__builtin_va_start(", out);
280 print_expression(expression->ap);
282 fputs(expression->parameter->symbol->string, out);
286 static void print_va_arg(const va_arg_expression_t *expression)
288 fputs("__builtin_va_arg(", out);
289 print_expression(expression->ap);
291 print_type(expression->expression.datatype);
295 static void print_select(const select_expression_t *expression)
297 print_expression(expression->compound);
298 if(expression->compound->base.datatype == NULL ||
299 expression->compound->base.datatype->type == TYPE_POINTER) {
304 fputs(expression->symbol->string, out);
307 static void print_classify_type_expression(
308 const classify_type_expression_t *const expr)
310 fputs("__builtin_classify_type(", out);
311 print_expression(expr->type_expression);
315 void print_expression(const expression_t *expression)
317 switch(expression->type) {
320 fprintf(out, "*invalid expression*");
323 print_const(&expression->conste);
326 case EXPR_PRETTY_FUNCTION:
327 case EXPR_STRING_LITERAL:
328 print_string_literal(&expression->string);
330 case EXPR_WIDE_STRING_LITERAL:
331 print_wide_string_literal(&expression->wide_string);
334 print_call_expression(&expression->call);
337 print_binary_expression(&expression->binary);
340 print_reference_expression(&expression->reference);
342 case EXPR_ARRAY_ACCESS:
343 print_array_expression(&expression->array_access);
346 print_unary_expression(&expression->unary);
349 print_sizeof_expression(&expression->sizeofe);
351 case EXPR_BUILTIN_SYMBOL:
352 print_builtin_symbol(&expression->builtin_symbol);
354 case EXPR_CONDITIONAL:
355 print_conditional(&expression->conditional);
358 print_va_start(&expression->va_starte);
360 print_va_arg(&expression->va_arge);
363 print_select(&expression->select);
365 case EXPR_CLASSIFY_TYPE:
366 print_classify_type_expression(&expression->classify_type);
372 fprintf(out, "some expression of type %d", (int) expression->type);
377 static void print_compound_statement(const compound_statement_t *block)
382 statement_t *statement = block->statements;
383 while(statement != NULL) {
385 print_statement(statement);
387 statement = statement->base.next;
394 static void print_return_statement(const return_statement_t *statement)
396 fprintf(out, "return ");
397 if(statement->return_value != NULL)
398 print_expression(statement->return_value);
402 static void print_expression_statement(const expression_statement_t *statement)
404 print_expression(statement->expression);
408 static void print_goto_statement(const goto_statement_t *statement)
410 fprintf(out, "goto ");
411 fputs(statement->label->symbol->string, out);
412 fprintf(stderr, "(%p)", (void*) statement->label);
416 static void print_label_statement(const label_statement_t *statement)
418 fprintf(stderr, "(%p)", (void*) statement->label);
419 fprintf(out, "%s:\n", statement->label->symbol->string);
420 if(statement->label_statement != NULL) {
421 print_statement(statement->label_statement);
425 static void print_if_statement(const if_statement_t *statement)
428 print_expression(statement->condition);
430 if(statement->true_statement != NULL) {
431 print_statement(statement->true_statement);
434 if(statement->false_statement != NULL) {
437 print_statement(statement->false_statement);
441 static void print_switch_statement(const switch_statement_t *statement)
443 fputs("switch(", out);
444 print_expression(statement->expression);
446 print_statement(statement->body);
449 static void print_case_label(const case_label_statement_t *statement)
451 if(statement->expression == NULL) {
452 fputs("default:\n", out);
455 print_expression(statement->expression);
458 print_statement(statement->label_statement);
461 static void print_declaration_statement(
462 const declaration_statement_t *statement)
465 declaration_t *declaration = statement->declarations_begin;
466 for( ; declaration != statement->declarations_end->next;
467 declaration = declaration->next) {
473 print_declaration(declaration);
478 static void print_while_statement(const while_statement_t *statement)
480 fputs("while(", out);
481 print_expression(statement->condition);
483 print_statement(statement->body);
486 static void print_do_while_statement(const do_while_statement_t *statement)
489 print_statement(statement->body);
491 fputs("while(", out);
492 print_expression(statement->condition);
496 static void print_for_statement(const for_statement_t *statement)
499 if(statement->context.declarations != NULL) {
500 assert(statement->initialisation == NULL);
501 print_declaration(statement->context.declarations);
502 if(statement->context.declarations->next != NULL) {
503 panic("multiple declarations in for statement not supported yet");
507 if(statement->initialisation) {
508 print_expression(statement->initialisation);
512 if(statement->condition != NULL) {
513 print_expression(statement->condition);
516 if(statement->step != NULL) {
517 print_expression(statement->step);
520 print_statement(statement->body);
523 static void print_asm_constraints(asm_constraint_t *constraints)
525 asm_constraint_t *constraint = constraints;
526 for( ; constraint != NULL; constraint = constraint->next) {
527 if(constraint != constraints)
530 if(constraint->symbol) {
531 fprintf(out, "[%s] ", constraint->symbol->string);
533 print_quoted_string(constraint->constraints);
535 print_expression(constraint->expression);
540 static void print_asm_clobbers(asm_clobber_t *clobbers)
542 asm_clobber_t *clobber = clobbers;
543 for( ; clobber != NULL; clobber = clobber->next) {
544 if(clobber != clobbers)
547 print_quoted_string(clobber->clobber);
551 static void print_asm_statement(const asm_statement_t *statement)
554 if(statement->is_volatile) {
555 fputs("volatile ", out);
558 print_quoted_string(statement->asm_text);
559 if(statement->inputs == NULL && statement->outputs == NULL
560 && statement->clobbers == NULL)
561 goto end_of_print_asm_statement;
564 print_asm_constraints(statement->inputs);
565 if(statement->outputs == NULL && statement->clobbers == NULL)
566 goto end_of_print_asm_statement;
569 print_asm_constraints(statement->outputs);
570 if(statement->clobbers == NULL)
571 goto end_of_print_asm_statement;
574 print_asm_clobbers(statement->clobbers);
576 end_of_print_asm_statement:
580 void print_statement(const statement_t *statement)
582 switch(statement->type) {
583 case STATEMENT_COMPOUND:
584 print_compound_statement(&statement->compound);
586 case STATEMENT_RETURN:
587 print_return_statement(&statement->returns);
589 case STATEMENT_EXPRESSION:
590 print_expression_statement(&statement->expression);
592 case STATEMENT_LABEL:
593 print_label_statement(&statement->label);
596 print_goto_statement(&statement->gotos);
598 case STATEMENT_CONTINUE:
599 fputs("continue;\n", out);
601 case STATEMENT_BREAK:
602 fputs("break;\n", out);
605 print_if_statement(&statement->ifs);
607 case STATEMENT_SWITCH:
608 print_switch_statement(&statement->switchs);
610 case STATEMENT_CASE_LABEL:
611 print_case_label(&statement->case_label);
613 case STATEMENT_DECLARATION:
614 print_declaration_statement(&statement->declaration);
616 case STATEMENT_WHILE:
617 print_while_statement(&statement->whiles);
619 case STATEMENT_DO_WHILE:
620 print_do_while_statement(&statement->do_while);
623 print_for_statement(&statement->fors);
626 print_asm_statement(&statement->asms);
628 case STATEMENT_INVALID:
629 fprintf(out, "*invalid statement*");
634 static void print_storage_class(unsigned storage_class)
636 switch((storage_class_tag_t) storage_class) {
637 case STORAGE_CLASS_ENUM_ENTRY:
638 case STORAGE_CLASS_NONE:
640 case STORAGE_CLASS_TYPEDEF: fputs("typedef ", out); break;
641 case STORAGE_CLASS_EXTERN: fputs("extern ", out); break;
642 case STORAGE_CLASS_STATIC: fputs("static ", out); break;
643 case STORAGE_CLASS_AUTO: fputs("auto ", out); break;
644 case STORAGE_CLASS_REGISTER: fputs("register ", out); break;
645 case STORAGE_CLASS_THREAD: fputs("__thread", out); break;
646 case STORAGE_CLASS_THREAD_EXTERN: fputs("extern __thread", out); break;
647 case STORAGE_CLASS_THREAD_STATIC: fputs("static __thread", out); break;
651 void print_initializer(const initializer_t *initializer)
653 if(initializer->type == INITIALIZER_VALUE) {
654 const initializer_value_t *value = &initializer->value;
655 print_expression(value->value);
659 assert(initializer->type == INITIALIZER_LIST);
661 const initializer_list_t *list = &initializer->list;
663 for(size_t i = 0 ; i < list->len; ++i) {
667 print_initializer(list->initializers[i]);
672 static void print_normal_declaration(const declaration_t *declaration)
674 print_storage_class(declaration->storage_class);
675 if(declaration->is_inline) {
676 fputs("inline ", out);
678 print_type_ext(declaration->type, declaration->symbol,
679 &declaration->context);
681 if(declaration->type->type == TYPE_FUNCTION) {
682 if(declaration->init.statement != NULL) {
684 print_statement(declaration->init.statement);
687 } else if(declaration->init.initializer != NULL) {
689 print_initializer(declaration->init.initializer);
694 void print_declaration(const declaration_t *declaration)
696 if(declaration->namespc != NAMESPACE_NORMAL &&
697 declaration->symbol == NULL)
700 switch(declaration->namespc) {
701 case NAMESPACE_NORMAL:
702 print_normal_declaration(declaration);
704 case NAMESPACE_STRUCT:
705 fputs("struct ", out);
706 fputs(declaration->symbol->string, out);
708 print_compound_definition(declaration);
711 case NAMESPACE_UNION:
712 fputs("union ", out);
713 fputs(declaration->symbol->string, out);
715 print_compound_definition(declaration);
720 fputs(declaration->symbol->string, out);
722 print_enum_definition(declaration);
728 void print_ast(const translation_unit_t *unit)
732 declaration_t *declaration = unit->context.declarations;
733 for( ; declaration != NULL; declaration = declaration->next) {
734 if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY)
736 if(declaration->namespc != NAMESPACE_NORMAL &&
737 declaration->symbol == NULL)
741 print_declaration(declaration);
748 obstack_init(&ast_obstack);
753 obstack_free(&ast_obstack, NULL);
756 void ast_set_output(FILE *stream)
759 type_set_output(stream);
762 void* (allocate_ast) (size_t size)
764 return _allocate_ast(size);