/*
* This file is part of cparser.
- * Copyright (C) 2007-2008 Matthias Braun <matze@braunis.de>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * Copyright (C) 2012 Matthias Braun <matze@braunis.de>
*/
#ifndef AST_H
#define AST_H
#include "entity.h"
typedef struct expression_base_t expression_base_t;
-typedef struct const_expression_t const_expression_t;
+typedef struct literal_expression_t literal_expression_t;
typedef struct string_literal_expression_t string_literal_expression_t;
typedef struct funcname_expression_t funcname_expression_t;
-typedef struct wide_string_literal_expression_t wide_string_literal_expression_t;
typedef struct compound_literal_expression_t compound_literal_expression_t;
typedef struct reference_expression_t reference_expression_t;
-typedef struct cast_expression_t cast_expression_t;
typedef struct call_argument_t call_argument_t;
-typedef struct type_argument_t type_argument_t;
typedef struct call_expression_t call_expression_t;
typedef struct binary_expression_t binary_expression_t;
typedef struct unary_expression_t unary_expression_t;
typedef struct array_access_expression_t array_access_expression_t;
typedef struct typeprop_expression_t typeprop_expression_t;
typedef struct conditional_expression_t conditional_expression_t;
-typedef struct expression_list_element_t expression_list_element_t;
-typedef struct comma_expression_t comma_expression_t;
typedef struct statement_expression_t statement_expression_t;
typedef struct designator_t designator_t;
typedef struct offsetof_expression_t offsetof_expression_t;
typedef struct builtin_constant_expression_t builtin_constant_expression_t;
typedef struct builtin_types_compatible_expression_t builtin_types_compatible_expression_t;
typedef struct classify_type_expression_t classify_type_expression_t;
-typedef struct bitfield_extract_expression_t bitfield_extract_expression_t;
typedef struct label_address_expression_t label_address_expression_t;
typedef union expression_t expression_t;
typedef struct initializer_base_t initializer_base_t;
typedef struct initializer_list_t initializer_list_t;
typedef struct initializer_value_t initializer_value_t;
-typedef struct initializer_string_t initializer_string_t;
-typedef struct initializer_wide_string_t initializer_wide_string_t;
typedef struct initializer_designator_t initializer_designator_t;
typedef union initializer_t initializer_t;
typedef struct statement_base_t statement_base_t;
-typedef struct invalid_statement_t invalid_statement_t;
-typedef struct empty_statement_t empty_statement_t;
typedef struct compound_statement_t compound_statement_t;
typedef struct return_statement_t return_statement_t;
typedef struct if_statement_t if_statement_t;
typedef struct switch_statement_t switch_statement_t;
typedef struct declaration_statement_t declaration_statement_t;
typedef struct expression_statement_t expression_statement_t;
+typedef struct computed_goto_statement_t computed_goto_statement_t;
typedef struct goto_statement_t goto_statement_t;
typedef struct label_statement_t label_statement_t;
typedef struct case_label_statement_t case_label_statement_t;
-typedef struct while_statement_t while_statement_t;
typedef struct do_while_statement_t do_while_statement_t;
typedef struct for_statement_t for_statement_t;
typedef struct asm_argument_t asm_argument_t;
typedef struct asm_clobber_t asm_clobber_t;
+typedef struct asm_label_t asm_label_t;
typedef struct asm_statement_t asm_statement_t;
typedef struct ms_try_statement_t ms_try_statement_t;
typedef struct leave_statement_t leave_statement_t;
typedef struct translation_unit_t translation_unit_t;
-void init_ast(void);
-void exit_ast(void);
+/**
+ * Initialize the AST construction.
+ */
+void init_ast(void);
+
+/**
+ * Free the AST.
+ */
+void exit_ast(void);
-void ast_set_output(FILE *out);
-void print_expression(const expression_t *expression);
-void print_initializer(const initializer_t *initializer);
-void print_ast(const translation_unit_t *unit);
-void print_indent(void);
-void print_declaration(const entity_t *entity);
-void print_entity(const entity_t *entity);
-void change_indent(int delta);
-void *allocate_ast(size_t size);
+void print_expression(const expression_t *expression);
+void print_initializer(const initializer_t *initializer);
+void print_ast(const translation_unit_t *unit);
+void print_indent(void);
+void print_declaration(const entity_t *entity);
+void print_entity(const entity_t *entity);
+void change_indent(int delta);
+
+typedef enum expression_classification_t {
+ EXPR_CLASS_VARIABLE,
+ EXPR_CLASS_ERROR,
+ EXPR_CLASS_CONSTANT
+} expression_classification_t;
/**
- * Returns true if a given expression is a compile time
- * constant. ยง6.6
- *
- * @param expression the expression to check
+ * Returns true when an initializer contains only constants/linker_constant
+ * values.
*/
-bool is_constant_initializer(const initializer_t *initializer);
+expression_classification_t is_constant_initializer(const initializer_t *initializer);
/**
* Returns true if a given expression is a compile time
*
* @param expression the expression to check
*/
-bool is_constant_expression(const expression_t *expression);
+expression_classification_t is_constant_expression(const expression_t *expression);
/**
- * An object with a fixed but at compiletime unknown adress which will be known
- * at link/load time.
+ * Checks if an expression is a constant/known value to the linker. Examples:
+ * - all constant/linker constant expression casted to a pointer type
+ * - "&x", with x being a global variable.
+ * - "array" or "a.array" in case array is an array and array and a,
+ * respectively is an object with link time constant address
*/
-bool is_address_constant(const expression_t *expression);
+expression_classification_t is_linker_constant(const expression_t *expression);
long fold_constant_to_int(const expression_t *expression);
bool fold_constant_to_bool(const expression_t *expression);
+bool constant_is_negative(const expression_t *constant);
+
+/**
+ * the type of a literal is usually the biggest type that can hold the value.
+ * Since this is backend dependent the parses needs this call exposed.
+ * Works for EXPR_LITERAL_* expressions.
+ */
+void determine_literal_type(literal_expression_t *literal);
#endif
projects / cparser / blobdiff