11 #include "adt/error.h"
13 struct obstack ast_obstack;
18 static void print_statement(const statement_t *statement);
19 static void print_declaration(const declaration_t *declaration);
21 static void print_indent(void)
23 for(int i = 0; i < indent; ++i)
27 static void print_const(const const_t *cnst)
29 if(cnst->expression.datatype == NULL)
32 if(is_type_integer(cnst->expression.datatype)) {
33 fprintf(out, "%d", cnst->v.int_value);
34 } else if(is_type_floating(cnst->expression.datatype)) {
35 fprintf(out, "%Lf", cnst->v.float_value);
39 static void print_string_literal(const string_literal_t *string_literal)
42 for(const char *c = string_literal->value; *c != '\0'; ++c) {
44 case '\"': fputs("\\\"", out); break;
45 case '\\': fputs("\\\\", out); break;
46 case '\a': fputs("\\a", out); break;
47 case '\b': fputs("\\b", out); break;
48 case '\f': fputs("\\f", out); break;
49 case '\n': fputs("\\n", out); break;
50 case '\r': fputs("\\r", out); break;
51 case '\t': fputs("\\t", out); break;
52 case '\v': fputs("\\v", out); break;
53 case '\?': fputs("\\?", out); break;
56 fprintf(out, "\\x%x", *c);
66 static void print_call_expression(const call_expression_t *call)
68 print_expression(call->method);
70 call_argument_t *argument = call->arguments;
72 while(argument != NULL) {
78 print_expression(argument->expression);
80 argument = argument->next;
85 static void print_binary_expression(const binary_expression_t *binexpr)
88 print_expression(binexpr->left);
90 switch(binexpr->type) {
91 case BINEXPR_INVALID: fputs("INVOP", out); break;
92 case BINEXPR_COMMA: fputs(",", out); break;
93 case BINEXPR_ASSIGN: fputs("=", out); break;
94 case BINEXPR_ADD: fputs("+", out); break;
95 case BINEXPR_SUB: fputs("-", out); break;
96 case BINEXPR_MUL: fputs("*", out); break;
97 case BINEXPR_MOD: fputs("%", out); break;
98 case BINEXPR_DIV: fputs("/", out); break;
99 case BINEXPR_BITWISE_OR: fputs("|", out); break;
100 case BINEXPR_BITWISE_AND: fputs("&", out); break;
101 case BINEXPR_BITWISE_XOR: fputs("^", out); break;
102 case BINEXPR_LOGICAL_OR: fputs("||", out); break;
103 case BINEXPR_LOGICAL_AND: fputs("&&", out); break;
104 case BINEXPR_NOTEQUAL: fputs("!=", out); break;
105 case BINEXPR_EQUAL: fputs("==", out); break;
106 case BINEXPR_LESS: fputs("<", out); break;
107 case BINEXPR_LESSEQUAL: fputs("<=", out); break;
108 case BINEXPR_GREATER: fputs(">", out); break;
109 case BINEXPR_GREATEREQUAL: fputs(">=", out); break;
110 case BINEXPR_SHIFTLEFT: fputs("<<", out); break;
111 case BINEXPR_SHIFTRIGHT: fputs(">>", out); break;
113 case BINEXPR_ADD_ASSIGN: fputs("+=", out); break;
114 case BINEXPR_SUB_ASSIGN: fputs("-=", out); break;
115 case BINEXPR_MUL_ASSIGN: fputs("*=", out); break;
116 case BINEXPR_MOD_ASSIGN: fputs("%=", out); break;
117 case BINEXPR_DIV_ASSIGN: fputs("/=", out); break;
118 case BINEXPR_BITWISE_OR_ASSIGN: fputs("|=", out); break;
119 case BINEXPR_BITWISE_AND_ASSIGN: fputs("&=", out); break;
120 case BINEXPR_BITWISE_XOR_ASSIGN: fputs("^=", out); break;
121 case BINEXPR_SHIFTLEFT_ASSIGN: fputs("<<=", out); break;
122 case BINEXPR_SHIFTRIGHT_ASSIGN: fputs(">>=", out); break;
125 print_expression(binexpr->right);
129 static void print_unary_expression(const unary_expression_t *unexpr)
131 switch(unexpr->type) {
132 case UNEXPR_NEGATE: fputs("-", out); break;
133 case UNEXPR_PLUS: fputs("+", out); break;
134 case UNEXPR_NOT: fputs("!", out); break;
135 case UNEXPR_BITWISE_NEGATE: fputs("~", out); break;
136 case UNEXPR_PREFIX_INCREMENT: fputs("++", out); break;
137 case UNEXPR_PREFIX_DECREMENT: fputs("--", out); break;
138 case UNEXPR_DEREFERENCE: fputs("*", out); break;
139 case UNEXPR_TAKE_ADDRESS: fputs("&", out); break;
141 case UNEXPR_POSTFIX_INCREMENT:
143 print_expression(unexpr->value);
147 case UNEXPR_POSTFIX_DECREMENT:
149 print_expression(unexpr->value);
155 print_type(unexpr->expression.datatype);
159 fprintf(out, "unop%d", unexpr->type);
163 print_expression(unexpr->value);
167 static void print_reference_expression(const reference_expression_t *ref)
169 fprintf(out, "%s", ref->declaration->symbol->string);
172 static void print_array_expression(const array_access_expression_t *expression)
175 print_expression(expression->array_ref);
177 print_expression(expression->index);
181 static void print_sizeof_expression(const sizeof_expression_t *expression)
183 fputs("sizeof", out);
184 if(expression->size_expression != NULL) {
186 print_expression(expression->size_expression);
190 print_type(expression->type);
195 static void print_builtin_symbol(const builtin_symbol_expression_t *expression)
197 fputs(expression->symbol->string, out);
200 static void print_conditional(const conditional_expression_t *expression)
203 print_expression(expression->condition);
205 print_expression(expression->true_expression);
207 print_expression(expression->false_expression);
211 static void print_va_arg(const va_arg_expression_t *expression)
213 fputs("__builtin_va_arg(", out);
214 print_expression(expression->arg);
216 print_type(expression->expression.datatype);
220 void print_expression(const expression_t *expression)
222 switch(expression->type) {
224 fprintf(out, "*invalid expression*");
227 print_const((const const_t*) expression);
230 case EXPR_PRETTY_FUNCTION:
231 case EXPR_STRING_LITERAL:
232 print_string_literal((const string_literal_t*) expression);
235 print_call_expression((const call_expression_t*) expression);
238 print_binary_expression((const binary_expression_t*) expression);
241 print_reference_expression((const reference_expression_t*) expression);
243 case EXPR_ARRAY_ACCESS:
244 print_array_expression((const array_access_expression_t*) expression);
247 print_unary_expression((const unary_expression_t*) expression);
250 print_sizeof_expression((const sizeof_expression_t*) expression);
252 case EXPR_BUILTIN_SYMBOL:
253 print_builtin_symbol((const builtin_symbol_expression_t*) expression);
255 case EXPR_CONDITIONAL:
256 print_conditional((const conditional_expression_t*) expression);
259 print_va_arg((const va_arg_expression_t*) expression);
266 fprintf(out, "some expression of type %d", expression->type);
271 static void print_compound_statement(const compound_statement_t *block)
276 statement_t *statement = block->statements;
277 while(statement != NULL) {
279 print_statement(statement);
281 statement = statement->next;
288 static void print_return_statement(const return_statement_t *statement)
290 fprintf(out, "return ");
291 if(statement->return_value != NULL)
292 print_expression(statement->return_value);
296 static void print_expression_statement(const expression_statement_t *statement)
298 print_expression(statement->expression);
302 static void print_goto_statement(const goto_statement_t *statement)
304 fprintf(out, "goto ");
305 if(statement->label != NULL) {
306 fprintf(out, "%s", statement->label->symbol->string);
308 fprintf(out, "?%s", statement->label_symbol->string);
313 static void print_label_statement(const label_statement_t *statement)
315 fprintf(out, "%s:\n", statement->symbol->string);
318 static void print_if_statement(const if_statement_t *statement)
321 print_expression(statement->condition);
323 if(statement->true_statement != NULL) {
324 print_statement(statement->true_statement);
327 if(statement->false_statement != NULL) {
330 print_statement(statement->false_statement);
334 static void print_switch_statement(const switch_statement_t *statement)
336 fputs("switch(", out);
337 print_expression(statement->expression);
339 print_statement(statement->body);
342 static void print_case_label(const case_label_statement_t *statement)
344 if(statement->expression == NULL) {
345 fputs("default:\n", out);
348 print_expression(statement->expression);
353 static void print_declaration_statement(
354 const declaration_statement_t *statement)
356 declaration_t *declaration = statement->declarations_begin;
357 for( ; declaration != statement->declarations_end->next;
358 declaration = declaration->next) {
359 print_declaration(declaration);
363 static void print_while_statement(const while_statement_t *statement)
365 fputs("while(", out);
366 print_expression(statement->condition);
368 print_statement(statement->body);
371 static void print_do_while_statement(const do_while_statement_t *statement)
374 print_statement(statement->body);
376 fputs("while(", out);
377 print_expression(statement->condition);
381 static void print_for_statement(const for_statement_t *statement)
384 if(statement->context.declarations != NULL) {
385 assert(statement->initialisation == NULL);
386 print_declaration(statement->context.declarations);
387 if(statement->context.declarations->next != NULL) {
388 panic("multiple declarations in for statement not supported yet");
390 } else if(statement->initialisation) {
391 print_expression(statement->initialisation);
394 if(statement->condition != NULL) {
395 print_expression(statement->condition);
398 if(statement->step != NULL) {
399 print_expression(statement->step);
402 print_statement(statement->body);
405 void print_statement(const statement_t *statement)
407 switch(statement->type) {
408 case STATEMENT_COMPOUND:
409 print_compound_statement((const compound_statement_t*) statement);
411 case STATEMENT_RETURN:
412 print_return_statement((const return_statement_t*) statement);
414 case STATEMENT_EXPRESSION:
415 print_expression_statement((const expression_statement_t*) statement);
417 case STATEMENT_LABEL:
418 print_label_statement((const label_statement_t*) statement);
421 print_goto_statement((const goto_statement_t*) statement);
423 case STATEMENT_CONTINUE:
424 fputs("continue;\n", out);
426 case STATEMENT_BREAK:
427 fputs("break;\n", out);
430 print_if_statement((const if_statement_t*) statement);
432 case STATEMENT_SWITCH:
433 print_switch_statement((const switch_statement_t*) statement);
435 case STATEMENT_CASE_LABEL:
436 print_case_label((const case_label_statement_t*) statement);
438 case STATEMENT_DECLARATION:
439 print_declaration_statement((const declaration_statement_t*) statement);
441 case STATEMENT_WHILE:
442 print_while_statement((const while_statement_t*) statement);
444 case STATEMENT_DO_WHILE:
445 print_do_while_statement((const do_while_statement_t*) statement);
448 print_for_statement((const for_statement_t*) statement);
450 case STATEMENT_INVALID:
451 fprintf(out, "*invalid statement*");
456 static void print_storage_class(storage_class_t storage_class)
458 switch(storage_class) {
459 case STORAGE_CLASS_ENUM_ENTRY:
460 case STORAGE_CLASS_NONE:
462 case STORAGE_CLASS_TYPEDEF: fputs("typedef ", out); break;
463 case STORAGE_CLASS_EXTERN: fputs("extern ", out); break;
464 case STORAGE_CLASS_STATIC: fputs("static ", out); break;
465 case STORAGE_CLASS_AUTO: fputs("auto ", out); break;
466 case STORAGE_CLASS_REGISTER: fputs("register ", out); break;
470 void print_initializer(const initializer_t *initializer)
472 if(initializer->type == INITIALIZER_VALUE) {
473 print_expression(initializer->v.value);
477 assert(initializer->type == INITIALIZER_LIST);
479 initializer_t *iter = initializer->v.list;
480 for( ; iter != NULL; iter = iter->next) {
481 print_initializer(iter);
482 if(iter->next != NULL) {
489 static void print_declaration(const declaration_t *declaration)
491 print_storage_class(declaration->storage_class);
492 print_type_ext(declaration->type, declaration->symbol,
493 &declaration->context);
494 if(declaration->statement != NULL) {
496 print_statement(declaration->statement);
497 } else if(declaration->initializer != NULL) {
499 print_initializer(declaration->initializer);
506 void print_ast(const translation_unit_t *unit)
508 declaration_t *declaration = unit->context.declarations;
509 while(declaration != NULL) {
510 print_declaration(declaration);
512 declaration = declaration->next;
518 obstack_init(&ast_obstack);
523 obstack_free(&ast_obstack, NULL);
526 void ast_set_output(FILE *stream)
529 type_set_output(stream);
532 void* (allocate_ast) (size_t size)
534 return _allocate_ast(size);