X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;ds=sidebyside;f=ast.c;h=8c3c54bd2fb5a5cf600806187389d2a4f5ce610f;hb=87209b2bd983f4d0137e693b2ce15f4067c8d424;hp=f2bc587276ce9cf94d27398a2826150593b4175c;hpb=3e3bf65b33ece40f474c91dac37cf8ea716a5b03;p=cparser

diff --git a/ast.c b/ast.c
index f2bc587..8c3c54b 100644
--- a/ast.c
+++ b/ast.c
@@ -6,6 +6,7 @@
 #include <assert.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <ctype.h>
 
 #include "adt/error.h"
 
@@ -16,29 +17,60 @@ static int   indent;
 
 static void print_statement(const statement_t *statement);
 
-static void print_indent(void)
+void change_indent(int delta)
+{
+	indent += delta;
+	assert(indent >= 0);
+}
+
+void print_indent(void)
 {
 	for(int i = 0; i < indent; ++i)
 		fprintf(out, "\t");
 }
 
-static
-void print_const(const const_t *cnst)
+static void print_const(const const_t *cnst)
 {
-	fprintf(out, "%d", cnst->value);
+	if(cnst->expression.datatype == NULL)
+		return;
+
+	if(is_type_integer(cnst->expression.datatype)) {
+		fprintf(out, "%d", cnst->v.int_value);
+	} else if(is_type_floating(cnst->expression.datatype)) {
+		fprintf(out, "%Lf", cnst->v.float_value);
+	}
 }
 
-static
-void print_string_literal(const string_literal_t *string_literal)
+static void print_string_literal(const string_literal_t *string_literal)
 {
-	/* TODO escape " and non-printable chars */
-	fprintf(out, "\"%s\"", string_literal->value);
+	fputc('"', out);
+	for(const char *c = string_literal->value; *c != '\0'; ++c) {
+		switch(*c) {
+		case '\"':  fputs("\\\"", out); break;
+		case '\\':  fputs("\\\\", out); break;
+		case '\a':  fputs("\\a", out); break;
+		case '\b':  fputs("\\b", out); break;
+		case '\f':  fputs("\\f", out); break;
+		case '\n':  fputs("\\n", out); break;
+		case '\r':  fputs("\\r", out); break;
+		case '\t':  fputs("\\t", out); break;
+		case '\v':  fputs("\\v", out); break;
+		case '\?':  fputs("\\?", out); break;
+		default:
+			if(!isprint(*c)) {
+				fprintf(out, "\\x%x", *c);
+				break;
+			}
+			fputc(*c, out);
+			break;
+		}
+	}
+	fputc('"', out);
 }
 
-static
-void print_call_expression(const call_expression_t *call)
+static void print_call_expression(const call_expression_t *call)
 {
-	print_expression(call->method);
+	print_expression(call->function);
 	fprintf(out, "(");
 	call_argument_t *argument = call->arguments;
 	int              first    = 1;
@@ -55,58 +87,153 @@ void print_call_expression(const call_expression_t *call)
 	fprintf(out, ")");
 }
 
-static
-void print_binary_expression(const binary_expression_t *binexpr)
+static void print_binary_expression(const binary_expression_t *binexpr)
 {
 	fprintf(out, "(");
 	print_expression(binexpr->left);
 	fprintf(out, " ");
 	switch(binexpr->type) {
-	case BINEXPR_INVALID:
-		fprintf(out, "INVOP");
-		break;
-	case BINEXPR_ASSIGN:
-		fprintf(out, "<-");
-		break;
-	case BINEXPR_ADD:
-		fprintf(out, "+");
-		break;
-	case BINEXPR_SUB:
-		fprintf(out, "-");
-		break;
-	case BINEXPR_NOTEQUAL:
-		fprintf(out, "/=");
-		break;
-	case BINEXPR_EQUAL:
-		fprintf(out, "=");
-		break;
-	case BINEXPR_LESS:
-		fprintf(out, "<");
-		break;
-	case BINEXPR_LESSEQUAL:
-		fprintf(out, "<=");
-		break;
-	case BINEXPR_GREATER:
-		fprintf(out, ">");
-		break;
-	case BINEXPR_GREATEREQUAL:
-		fprintf(out, ">=");
-		break;
-	default:
-		/* TODO: add missing ops */
-		fprintf(out, "op%d", binexpr->type);
-		break;
+	case BINEXPR_INVALID:	         fputs("INVOP", out); break;
+	case BINEXPR_COMMA:              fputs(",", out);     break;
+	case BINEXPR_ASSIGN:             fputs("=", out);     break;
+	case BINEXPR_ADD:                fputs("+", out);     break;
+	case BINEXPR_SUB:                fputs("-", out);     break;
+	case BINEXPR_MUL:                fputs("*", out);     break;
+	case BINEXPR_MOD:                fputs("%", out);     break;
+	case BINEXPR_DIV:                fputs("/", out);     break;
+	case BINEXPR_BITWISE_OR:         fputs("|", out);     break;
+	case BINEXPR_BITWISE_AND:        fputs("&", out);     break;
+	case BINEXPR_BITWISE_XOR:        fputs("^", out);     break;
+	case BINEXPR_LOGICAL_OR:         fputs("||", out);    break;
+	case BINEXPR_LOGICAL_AND:        fputs("&&", out);    break;
+	case BINEXPR_NOTEQUAL:           fputs("!=", out);    break;
+	case BINEXPR_EQUAL:              fputs("==", out);    break;
+	case BINEXPR_LESS:               fputs("<", out);     break;
+	case BINEXPR_LESSEQUAL:          fputs("<=", out);    break;
+	case BINEXPR_GREATER:            fputs(">", out);     break;
+	case BINEXPR_GREATEREQUAL:       fputs(">=", out);    break;
+	case BINEXPR_SHIFTLEFT:          fputs("<<", out);    break;
+	case BINEXPR_SHIFTRIGHT:         fputs(">>", out);    break;
+
+	case BINEXPR_ADD_ASSIGN:         fputs("+=", out);    break;
+	case BINEXPR_SUB_ASSIGN:         fputs("-=", out);    break;
+	case BINEXPR_MUL_ASSIGN:         fputs("*=", out);    break;
+	case BINEXPR_MOD_ASSIGN:         fputs("%=", out);    break;
+	case BINEXPR_DIV_ASSIGN:         fputs("/=", out);    break;
+	case BINEXPR_BITWISE_OR_ASSIGN:  fputs("|=", out);    break;
+	case BINEXPR_BITWISE_AND_ASSIGN: fputs("&=", out);    break;
+	case BINEXPR_BITWISE_XOR_ASSIGN: fputs("^=", out);    break;
+	case BINEXPR_SHIFTLEFT_ASSIGN:   fputs("<<=", out);   break;
+	case BINEXPR_SHIFTRIGHT_ASSIGN:  fputs(">>=", out);   break;
 	}
 	fprintf(out, " ");
 	print_expression(binexpr->right);
 	fprintf(out, ")");
 }
 
+static void print_unary_expression(const unary_expression_t *unexpr)
+{
+	switch(unexpr->type) {
+	case UNEXPR_NEGATE:           fputs("-", out);  break;
+	case UNEXPR_PLUS:             fputs("+", out);  break;
+	case UNEXPR_NOT:              fputs("!", out);  break;
+	case UNEXPR_BITWISE_NEGATE:   fputs("~", out);  break;
+	case UNEXPR_PREFIX_INCREMENT: fputs("++", out); break;
+	case UNEXPR_PREFIX_DECREMENT: fputs("--", out); break;
+	case UNEXPR_DEREFERENCE:      fputs("*", out);  break;
+	case UNEXPR_TAKE_ADDRESS:     fputs("&", out);  break;
+
+	case UNEXPR_POSTFIX_INCREMENT:
+		fputs("(", out);
+		print_expression(unexpr->value);
+		fputs(")", out);
+		fputs("++", out);
+		return;
+	case UNEXPR_POSTFIX_DECREMENT:
+		fputs("(", out);
+		print_expression(unexpr->value);
+		fputs(")", out);
+		fputs("--", out);
+		return;
+	case UNEXPR_CAST:
+		fputs("(", out);
+		print_type(unexpr->expression.datatype);
+		fputs(")", out);
+		break;
+	case UNEXPR_INVALID:
+		fprintf(out, "unop%d", unexpr->type);
+		break;
+	}
+	fputs("(", out);
+	print_expression(unexpr->value);
+	fputs(")", out);
+}
+
 static void print_reference_expression(const reference_expression_t *ref)
 {
 	fprintf(out, "%s", ref->declaration->symbol->string);
 }
 
+static void print_array_expression(const array_access_expression_t *expression)
+{
+	fputs("(", out);
+	print_expression(expression->array_ref);
+	fputs(")[", out);
+	print_expression(expression->index);
+	fputs("]", out);
+}
+
+static void print_sizeof_expression(const sizeof_expression_t *expression)
+{
+	fputs("sizeof", out);
+	if(expression->size_expression != NULL) {
+		fputc('(', out);
+		print_expression(expression->size_expression);
+		fputc(')', out);
+	} else {
+		fputc('(', out);
+		print_type(expression->type);
+		fputc(')', out);
+	}
+}
+
+static void print_builtin_symbol(const builtin_symbol_expression_t *expression)
+{
+	fputs(expression->symbol->string, out);
+}
+
+static void print_conditional(const conditional_expression_t *expression)
+{
+	fputs("(", out);
+	print_expression(expression->condition);
+	fputs(" ? ", out);
+	print_expression(expression->true_expression);
+	fputs(" : ", out);
+	print_expression(expression->false_expression);
+	fputs(")", out);
+}
+
+static void print_va_arg(const va_arg_expression_t *expression)
+{
+	fputs("__builtin_va_arg(", out);
+	print_expression(expression->arg);
+	fputs(", ", out);
+	print_type(expression->expression.datatype);
+	fputs(")", out);
+}
+
+static void print_select(const select_expression_t *expression)
+{
+	print_expression(expression->compound);
+	if(expression->compound->datatype == NULL ||
+			expression->compound->datatype->type == TYPE_POINTER) {
+		fputs("->", out);
+	} else {
+		fputc('.', out);
+	}
+	fputs(expression->symbol->string, out);
+}
+
 void print_expression(const expression_t *expression)
 {
 	switch(expression->type) {
@@ -116,6 +243,8 @@ void print_expression(const expression_t *expression)
 	case EXPR_CONST:
 		print_const((const const_t*) expression);
 		break;
+	case EXPR_FUNCTION:
+	case EXPR_PRETTY_FUNCTION:
 	case EXPR_STRING_LITERAL:
 		print_string_literal((const string_literal_t*) expression);
 		break;
@@ -128,18 +257,37 @@ void print_expression(const expression_t *expression)
 	case EXPR_REFERENCE:
 		print_reference_expression((const reference_expression_t*) expression);
 		break;
-	case EXPR_UNARY:
-	case EXPR_SELECT:
 	case EXPR_ARRAY_ACCESS:
+		print_array_expression((const array_access_expression_t*) expression);
+		break;
+	case EXPR_UNARY:
+		print_unary_expression((const unary_expression_t*) expression);
+		break;
 	case EXPR_SIZEOF:
+		print_sizeof_expression((const sizeof_expression_t*) expression);
+		break;
+	case EXPR_BUILTIN_SYMBOL:
+		print_builtin_symbol((const builtin_symbol_expression_t*) expression);
+		break;
+	case EXPR_CONDITIONAL:
+		print_conditional((const conditional_expression_t*) expression);
+		break;
+	case EXPR_VA_ARG:
+		print_va_arg((const va_arg_expression_t*) expression);
+		break;
+	case EXPR_SELECT:
+		print_select((const select_expression_t*) expression);
+		break;
+
+	case EXPR_OFFSETOF:
+	case EXPR_STATEMENT:
 		/* TODO */
 		fprintf(out, "some expression of type %d", expression->type);
 		break;
 	}
 }
 
-static
-void print_compound_statement(const compound_statement_t *block)
+static void print_compound_statement(const compound_statement_t *block)
 {
 	fputs("{\n", out);
 	indent++;
@@ -156,8 +304,7 @@ void print_compound_statement(const compound_statement_t *block)
 	fputs("}\n", out);
 }
 
-static
-void print_return_statement(const return_statement_t *statement)
+static void print_return_statement(const return_statement_t *statement)
 {
 	fprintf(out, "return ");
 	if(statement->return_value != NULL)
@@ -165,14 +312,13 @@ void print_return_statement(const return_statement_t *statement)
 	fputs(";\n", out);
 }
 
-static
-void print_expression_statement(const expression_statement_t *statement)
+static void print_expression_statement(const expression_statement_t *statement)
 {
 	print_expression(statement->expression);
+	fputs(";\n", out);
 }
 
-static
-void print_goto_statement(const goto_statement_t *statement)
+static void print_goto_statement(const goto_statement_t *statement)
 {
 	fprintf(out, "goto ");
 	if(statement->label != NULL) {
@@ -183,34 +329,106 @@ void print_goto_statement(const goto_statement_t *statement)
 	fputs(";\n", out);
 }
 
-static
-void print_label_statement(const label_statement_t *statement)
+static void print_label_statement(const label_statement_t *statement)
 {
 	fprintf(out, "%s:\n", statement->symbol->string);
 }
 
-static
-void print_if_statement(const if_statement_t *statement)
+static void print_if_statement(const if_statement_t *statement)
 {
-	fprintf(out, "if(");
+	fputs("if(", out);
 	print_expression(statement->condition);
-	fprintf(out, ") ");
+	fputs(") ", out);
 	if(statement->true_statement != NULL) {
 		print_statement(statement->true_statement);
 	}
 
 	if(statement->false_statement != NULL) {
 		print_indent();
-		fprintf(out, "else ");
+		fputs("else ", out);
 		print_statement(statement->false_statement);
 	}
 }
 
-static
-void print_declaration_statement(const declaration_statement_t *statement)
+static void print_switch_statement(const switch_statement_t *statement)
 {
-	(void) statement;
-	fprintf(out, "*declaration statement*");
+	fputs("switch(", out);
+	print_expression(statement->expression);
+	fputs(") ", out);
+	print_statement(statement->body);
+}
+
+static void print_case_label(const case_label_statement_t *statement)
+{
+	if(statement->expression == NULL) {
+		fputs("default:\n", out);
+	} else {
+		fputs("case ", out);
+		print_expression(statement->expression);
+		fputs(":\n", out);
+	}
+}
+
+static void print_declaration_statement(
+		const declaration_statement_t *statement)
+{
+	int first = 1;
+	declaration_t *declaration = statement->declarations_begin;
+	for( ; declaration != statement->declarations_end->next;
+	       declaration = declaration->next) {
+		if(!first) {
+			print_indent();
+		} else {
+			first = 0;
+		}
+		print_declaration(declaration);
+		fputc('\n', out);
+	}
+}
+
+static void print_while_statement(const while_statement_t *statement)
+{
+	fputs("while(", out);
+	print_expression(statement->condition);
+	fputs(") ", out);
+	print_statement(statement->body);
+}
+
+static void print_do_while_statement(const do_while_statement_t *statement)
+{
+	fputs("do ", out);
+	print_statement(statement->body);
+	print_indent();
+	fputs("while(", out);
+	print_expression(statement->condition);
+	fputs(");\n", out);
+}
+
+static void print_for_statement(const for_statement_t *statement)
+{
+	fputs("for(", out);
+	if(statement->context.declarations != NULL) {
+		assert(statement->initialisation == NULL);
+		print_declaration(statement->context.declarations);
+		if(statement->context.declarations->next != NULL) {
+			panic("multiple declarations in for statement not supported yet");
+		}
+		fputc(' ', out);
+	} else {
+		if(statement->initialisation) {
+			print_expression(statement->initialisation);
+		}
+		fputs("; ", out);
+	}
+	if(statement->condition != NULL) {
+		print_expression(statement->condition);
+	}
+	fputs("; ", out);
+	if(statement->step != NULL) {
+		print_expression(statement->step);
+	}
+	fputs(")", out);
+	print_statement(statement->body);
 }
 
 void print_statement(const statement_t *statement)
@@ -231,54 +449,43 @@ void print_statement(const statement_t *statement)
 	case STATEMENT_GOTO:
 		print_goto_statement((const goto_statement_t*) statement);
 		break;
+	case STATEMENT_CONTINUE:
+		fputs("continue;\n", out);
+		break;
+	case STATEMENT_BREAK:
+		fputs("break;\n", out);
+		break;
 	case STATEMENT_IF:
 		print_if_statement((const if_statement_t*) statement);
 		break;
+	case STATEMENT_SWITCH:
+		print_switch_statement((const switch_statement_t*) statement);
+		break;
+	case STATEMENT_CASE_LABEL:
+		print_case_label((const case_label_statement_t*) statement);
+		break;
 	case STATEMENT_DECLARATION:
 		print_declaration_statement((const declaration_statement_t*) statement);
 		break;
+	case STATEMENT_WHILE:
+		print_while_statement((const while_statement_t*) statement);
+		break;
+	case STATEMENT_DO_WHILE:
+		print_do_while_statement((const do_while_statement_t*) statement);
+		break;
+	case STATEMENT_FOR:
+		print_for_statement((const for_statement_t*) statement);
+		break;
 	case STATEMENT_INVALID:
-	default:
 		fprintf(out, "*invalid statement*");
 		break;
-
 	}
 }
 
-#if 0
-static
-void print_method_parameters(const method_parameter_t *parameters,
-                             const method_type_t *method_type)
-{
-	fprintf(out, "(");
-
-	int                            first          = 1;
-	const method_parameter_t      *parameter      = parameters;
-	const method_parameter_type_t *parameter_type
-		= method_type->parameter_types;
-	while(parameter != NULL && parameter_type != NULL) {
-		if(!first) {
-			fprintf(out, ", ");
-		} else {
-			first = 0;
-		}
-
-		print_type(parameter_type->type);
-		fprintf(out, " %s", parameter->symbol->string);
-
-		parameter      = parameter->next;
-		parameter_type = parameter_type->next;
-	}
-	assert(parameter == NULL && parameter_type == NULL);
-
-	fprintf(out, ")");
-}
-#endif
-
-static
-void print_storage_class(storage_class_t storage_class)
+static void print_storage_class(storage_class_t storage_class)
 {
 	switch(storage_class) {
+	case STORAGE_CLASS_ENUM_ENTRY:
 	case STORAGE_CLASS_NONE:
 		break;
 	case STORAGE_CLASS_TYPEDEF:  fputs("typedef ", out); break;
@@ -289,26 +496,93 @@ void print_storage_class(storage_class_t storage_class)
 	}
 }
 
-static
-void print_declaration(const declaration_t *declaration)
+void print_initializer(const initializer_t *initializer)
+{
+	if(initializer->type == INITIALIZER_VALUE) {
+		print_expression(initializer->v.value);
+		return;
+	}
+
+	assert(initializer->type == INITIALIZER_LIST);
+	fputs("{ ", out);
+	initializer_t *iter = initializer->v.list;
+	for( ; iter != NULL; iter = iter->next) {
+		print_initializer(iter);
+		if(iter->next != NULL) {
+			fputs(", ", out);
+		}
+	}
+	fputs("}", out);
+}
+
+static void print_normal_declaration(const declaration_t *declaration)
 {
 	print_storage_class(declaration->storage_class);
-	print_type(declaration->type, declaration->symbol);
-	if(declaration->statement != NULL) {
-		fputs("\n", out);
-		print_statement(declaration->statement);
-	} else {
-		fprintf(out, ";\n");
+	print_type_ext(declaration->type, declaration->symbol,
+	               &declaration->context);
+	if(declaration->type->type == TYPE_FUNCTION) {
+		if(declaration->init.statement != NULL) {
+			fputs("\n", out);
+			print_statement(declaration->init.statement);
+			return;
+		}
+	} else if(declaration->init.initializer != NULL) {
+		fputs(" = ", out);
+		print_initializer(declaration->init.initializer);
+	}
+	fputc(';', out);
+}
+
+void print_declaration(const declaration_t *declaration)
+{
+	if(declaration->namespace != NAMESPACE_NORMAL &&
+			declaration->symbol == NULL)
+		return;
+
+	switch(declaration->namespace) {
+	case NAMESPACE_NORMAL:
+		print_normal_declaration(declaration);
+		break;
+	case NAMESPACE_STRUCT:
+		fputs("struct ", out);
+		fputs(declaration->symbol->string, out);
+		fputc(' ', out);
+		print_compound_definition(declaration);
+		fputc(';', out);
+		break;
+	case NAMESPACE_UNION:
+		fputs("union ", out);
+		fputs(declaration->symbol->string, out);
+		fputc(' ', out);
+		print_compound_definition(declaration);
+		fputc(';', out);
+		break;
+	case NAMESPACE_ENUM:
+		fputs("enum ", out);
+		fputs(declaration->symbol->string, out);
+		fputc(' ', out);
+		print_enum_definition(declaration);
+		fputc(';', out);
+		break;
 	}
 }
 
 void print_ast(const translation_unit_t *unit)
 {
+	inc_type_visited();
+	set_print_compound_entries(true);
+
 	declaration_t *declaration = unit->context.declarations;
-	while(declaration != NULL) {
-		print_declaration(declaration);
+	for( ; declaration != NULL; declaration = declaration->next) {
+		if(declaration->storage_class == STORAGE_CLASS_ENUM_ENTRY)
+			continue;
+		if(declaration->namespace != NAMESPACE_NORMAL &&
+				declaration->symbol == NULL)
+			continue;
 
-		declaration = declaration->next;
+		print_indent();
+		print_declaration(declaration);
+		fputc('\n', out);
 	}
 }