/*
* This file is part of cparser.
- * Copyright (C) 2007-2008 Matthias Braun <matze@braunis.de>
+ * Copyright (C) 2007-2009 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
#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 offsetof_expression_t offsetof_expression_t;
typedef struct va_start_expression_t va_start_expression_t;
typedef struct va_arg_expression_t va_arg_expression_t;
+typedef struct va_copy_expression_t va_copy_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 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 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 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);
+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.
+ * constant. ยง6.6
*
* @param expression the expression to check
*/
-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);
+
+/**
+ * Checks if an expression is a constant/known value to the linker. Examples:
+ * - all 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
+ */
+expression_classification_t is_linker_constant(const expression_t *expression);
-bool is_address_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);
-long fold_constant(const expression_t *expression);
+/**
+ * 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