+/*
+ * This file is part of cparser.
+ * 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
+ * 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.
+ */
#ifndef AST_T_H
#define AST_T_H
#include "symbol.h"
#include "token_t.h"
#include "type.h"
+#include "entity_t.h"
#include "adt/obst.h"
+/** The AST obstack contains all data that must stay in the AST. */
extern struct obstack ast_obstack;
-typedef enum {
- EXPR_UNKNOWN = 0,
- EXPR_INVALID,
+/**
+ * Operator precedence classes
+ */
+typedef enum precedence_t {
+ PREC_BOTTOM,
+ PREC_EXPRESSION, /* , left to right */
+ PREC_ASSIGNMENT, /* = += -= *= /= %= <<= >>= &= ^= |= right to left */
+ PREC_CONDITIONAL, /* ?: right to left */
+ PREC_LOGICAL_OR, /* || left to right */
+ PREC_LOGICAL_AND, /* && left to right */
+ PREC_OR, /* | left to right */
+ PREC_XOR, /* ^ left to right */
+ PREC_AND, /* & left to right */
+ PREC_EQUALITY, /* == != left to right */
+ PREC_RELATIONAL, /* < <= > >= left to right */
+ PREC_SHIFT, /* << >> left to right */
+ PREC_ADDITIVE, /* + - left to right */
+ PREC_MULTIPLICATIVE, /* * / % left to right */
+ PREC_CAST, /* (type) right to left */
+ PREC_UNARY, /* ! ~ ++ -- + - * & sizeof right to left */
+ PREC_POSTFIX, /* () [] -> . left to right */
+ PREC_PRIMARY,
+ PREC_TOP
+} precedence_t;
+
+/**
+ * Expression kinds.
+ */
+typedef enum expression_kind_t {
+ EXPR_ERROR = 1,
EXPR_REFERENCE,
- EXPR_CONST,
+ EXPR_REFERENCE_ENUM_VALUE,
+ EXPR_LITERAL_BOOLEAN,
+ EXPR_LITERAL_INTEGER,
+ EXPR_LITERAL_INTEGER_OCTAL,
+ EXPR_LITERAL_INTEGER_HEXADECIMAL,
+ EXPR_LITERAL_FLOATINGPOINT,
+ EXPR_LITERAL_FLOATINGPOINT_HEXADECIMAL,
+ EXPR_LITERAL_CHARACTER,
+ EXPR_LITERAL_WIDE_CHARACTER,
+ EXPR_LITERAL_MS_NOOP, /**< MS __noop extension */
EXPR_STRING_LITERAL,
EXPR_WIDE_STRING_LITERAL,
+ EXPR_COMPOUND_LITERAL,
EXPR_CALL,
EXPR_CONDITIONAL,
EXPR_SELECT,
EXPR_CLASSIFY_TYPE,
EXPR_ALIGNOF,
- EXPR_FUNCTION,
- EXPR_PRETTY_FUNCTION,
- EXPR_BUILTIN_SYMBOL,
+ EXPR_FUNCNAME,
EXPR_BUILTIN_CONSTANT_P,
- EXPR_BUILTIN_PREFETCH,
+ EXPR_BUILTIN_TYPES_COMPATIBLE_P,
EXPR_OFFSETOF,
EXPR_VA_START,
EXPR_VA_ARG,
+ EXPR_VA_COPY,
EXPR_STATEMENT,
+ EXPR_LABEL_ADDRESS, /**< GCC extension &&label operator */
EXPR_UNARY_FIRST,
EXPR_UNARY_NEGATE = EXPR_UNARY_FIRST,
EXPR_UNARY_PREFIX_INCREMENT,
EXPR_UNARY_PREFIX_DECREMENT,
EXPR_UNARY_CAST,
- EXPR_UNARY_CAST_IMPLICIT, /**< compiler generated cast */
EXPR_UNARY_ASSUME, /**< MS __assume() */
- EXPR_UNARY_BITFIELD_EXTRACT,
- EXPR_UNARY_LAST = EXPR_UNARY_BITFIELD_EXTRACT,
+ EXPR_UNARY_DELETE,
+ EXPR_UNARY_DELETE_ARRAY,
+ EXPR_UNARY_THROW,
+ EXPR_UNARY_LAST = EXPR_UNARY_THROW,
EXPR_BINARY_FIRST,
EXPR_BINARY_ADD = EXPR_BINARY_FIRST,
EXPR_BINARY_BITWISE_OR_ASSIGN,
EXPR_BINARY_COMMA,
- EXPR_BINARY_BUILTIN_EXPECT,
EXPR_BINARY_ISGREATER,
EXPR_BINARY_ISGREATEREQUAL,
EXPR_BINARY_ISLESS,
EXPR_BINARY_LAST = EXPR_BINARY_ISUNORDERED,
} expression_kind_t;
+typedef enum funcname_kind_t {
+ FUNCNAME_FUNCTION, /**< C99 __func__, older __FUNCTION__ */
+ FUNCNAME_PRETTY_FUNCTION, /**< GNUC __PRETTY_FUNCTION__ */
+ FUNCNAME_FUNCSIG, /**< MS __FUNCSIG__ */
+ FUNCNAME_FUNCDNAME /**< MS __FUNCDNAME__ */
+} funcname_kind_t;
+
/* convenience macros */
#define EXPR_BINARY_CASES \
case EXPR_BINARY_ADD: \
case EXPR_BINARY_BITWISE_XOR_ASSIGN: \
case EXPR_BINARY_BITWISE_OR_ASSIGN: \
case EXPR_BINARY_COMMA: \
- case EXPR_BINARY_BUILTIN_EXPECT: \
case EXPR_BINARY_ISGREATER: \
case EXPR_BINARY_ISGREATEREQUAL: \
case EXPR_BINARY_ISLESS: \
case EXPR_BINARY_ISLESSGREATER: \
case EXPR_BINARY_ISUNORDERED:
-#define EXPR_UNARY_CASES \
+/**
+ * unary expression with mandatory operand
+ */
+#define EXPR_UNARY_CASES_MANDATORY \
case EXPR_UNARY_NEGATE: \
case EXPR_UNARY_PLUS: \
case EXPR_UNARY_BITWISE_NEGATE: \
case EXPR_UNARY_PREFIX_INCREMENT: \
case EXPR_UNARY_PREFIX_DECREMENT: \
case EXPR_UNARY_CAST: \
- case EXPR_UNARY_CAST_IMPLICIT: \
case EXPR_UNARY_ASSUME: \
- case EXPR_UNARY_BITFIELD_EXTRACT:
-
-struct scope_t {
- declaration_t *declarations; /**< List of declarations in this scope. */
-};
-
+ case EXPR_UNARY_DELETE: \
+ case EXPR_UNARY_DELETE_ARRAY:
+
+/**
+ * unary expression with optional operand
+ */
+#define EXPR_UNARY_CASES_OPTIONAL \
+ case EXPR_UNARY_THROW: \
+
+#define EXPR_UNARY_CASES \
+ EXPR_UNARY_CASES_MANDATORY \
+ EXPR_UNARY_CASES_OPTIONAL
+
+#define EXPR_LITERAL_CASES \
+ case EXPR_LITERAL_BOOLEAN: \
+ case EXPR_LITERAL_INTEGER: \
+ case EXPR_LITERAL_INTEGER_OCTAL: \
+ case EXPR_LITERAL_INTEGER_HEXADECIMAL: \
+ case EXPR_LITERAL_FLOATINGPOINT: \
+ case EXPR_LITERAL_FLOATINGPOINT_HEXADECIMAL: \
+ case EXPR_LITERAL_CHARACTER: \
+ case EXPR_LITERAL_WIDE_CHARACTER: \
+ case EXPR_LITERAL_MS_NOOP:
+
+/**
+ * The base class of every expression.
+ */
struct expression_base_t {
- expression_kind_t kind;
- type_t *datatype;
- source_position_t source_position;
-};
+ expression_kind_t kind; /**< The expression kind. */
+ type_t *type; /**< The type of the expression. */
+ source_position_t source_position; /**< The source position of this expression. */
+ bool parenthesized : 1;
+#ifndef NDEBUG
+ bool transformed : 1; /**< Set if this expression was transformed. */
+#endif
+ bool implicit : 1; /**< compiler generated expression.
+ Examples:
+ select into anonymous structs
+ implicit casts
+ */
+};
+
+/**
+ * integer/float constants, character and string literals
+ */
+struct literal_expression_t {
+ expression_base_t base;
+ string_t value;
+ string_t suffix;
-struct const_expression_t {
- expression_base_t expression;
- union {
- long long int_value;
- long double float_value;
- } v;
+ /* ast2firm data */
+ ir_tarval *target_value;
};
struct string_literal_expression_t {
- expression_base_t expression;
+ expression_base_t base;
string_t value;
};
-struct wide_string_literal_expression_t {
- expression_base_t expression;
- wide_string_t value;
+struct funcname_expression_t {
+ expression_base_t base;
+ funcname_kind_t kind;
+ string_t value; /**< the value once assigned. */
};
-struct builtin_symbol_expression_t {
- expression_base_t expression;
- symbol_t *symbol;
+struct compound_literal_expression_t {
+ expression_base_t base;
+ type_t *type;
+ initializer_t *initializer;
};
struct builtin_constant_expression_t {
- expression_base_t expression;
+ expression_base_t base;
expression_t *value;
};
-struct builtin_prefetch_expression_t {
- expression_base_t expression;
- expression_t *adr;
- expression_t *rw;
- expression_t *locality;
+struct builtin_types_compatible_expression_t {
+ expression_base_t base;
+ type_t *left;
+ type_t *right;
};
struct reference_expression_t {
- expression_base_t expression;
- symbol_t *symbol;
- declaration_t *declaration;
+ expression_base_t base;
+ entity_t *entity;
};
+/**
+ * An argument of a call.
+ */
struct call_argument_t {
- expression_t *expression;
- call_argument_t *next;
+ expression_t *expression; /**< The expression which value is transmitted. */
+ call_argument_t *next; /**< Links to the next argument of this call. */
};
+
struct call_expression_t {
- expression_base_t expression;
- expression_t *function;
- call_argument_t *arguments;
+ expression_base_t base;
+ expression_t *function; /**< The address of the function to call. */
+ call_argument_t *arguments; /**< List of arguments of this call. */
};
+
struct unary_expression_t {
- expression_base_t expression;
- expression_t *value;
+ expression_base_t base;
+ expression_t *value; /**< The unary operand. */
};
struct binary_expression_t {
- expression_base_t expression;
+ expression_base_t base;
expression_t *left;
expression_t *right;
};
struct select_expression_t {
- expression_base_t expression;
+ expression_base_t base;
expression_t *compound;
- symbol_t *symbol;
-
- declaration_t *compound_entry;
+ entity_t *compound_entry;
};
struct array_access_expression_t {
- expression_base_t expression;
- expression_t *array_ref;
- expression_t *index;
- bool flipped; /* index/ref was written in a 5[a] way */
-};
-
-struct sizeof_expression_t {
- expression_base_t expression;
- type_t *type;
- expression_t *size_expression;
+ expression_base_t base;
+ expression_t *array_ref; /**< the referenced array */
+ expression_t *index; /**< the index used */
+ bool flipped; /**< True if index/ref was written in a 5[a] way */
};
-struct alignof_expression_t {
- expression_base_t expression;
+struct typeprop_expression_t {
+ expression_base_t base;
type_t *type;
+ expression_t *tp_expression;
};
struct designator_t {
- symbol_t *symbol;
- expression_t *array_access;
- designator_t *next;
+ source_position_t source_position;
+ symbol_t *symbol; /**< the symbol if any */
+ expression_t *array_index; /**< the array index if any */
+ designator_t *next;
};
struct offsetof_expression_t {
- expression_base_t expression;
+ expression_base_t base;
type_t *type;
designator_t *designator;
};
struct va_start_expression_t {
- expression_base_t expression;
+ expression_base_t base;
expression_t *ap;
- declaration_t *parameter;
+ variable_t *parameter;
};
struct va_arg_expression_t {
- expression_base_t expression;
+ expression_base_t base;
expression_t *ap;
};
+struct va_copy_expression_t {
+ expression_base_t base;
+ expression_t *dst; /**< destination argument */
+ expression_t *src; /**< source argument */
+};
+
struct conditional_expression_t {
- expression_base_t expression;
+ expression_base_t base;
expression_t *condition;
expression_t *true_expression;
expression_t *false_expression;
};
struct statement_expression_t {
- expression_base_t expression;
+ expression_base_t base;
statement_t *statement;
};
struct classify_type_expression_t {
- expression_base_t expression;
+ expression_base_t base;
expression_t *type_expression;
};
+struct label_address_expression_t {
+ expression_base_t base;
+ label_t *label;
+};
+
union expression_t {
- expression_kind_t kind;
- expression_base_t base;
- const_expression_t conste;
- string_literal_expression_t string;
- wide_string_literal_expression_t wide_string;
- builtin_symbol_expression_t builtin_symbol;
- builtin_constant_expression_t builtin_constant;
- builtin_prefetch_expression_t builtin_prefetch;
- reference_expression_t reference;
- call_expression_t call;
- unary_expression_t unary;
- binary_expression_t binary;
- select_expression_t select;
- array_access_expression_t array_access;
- sizeof_expression_t sizeofe;
- offsetof_expression_t offsetofe;
- va_start_expression_t va_starte;
- va_arg_expression_t va_arge;
- conditional_expression_t conditional;
- statement_expression_t statement;
- classify_type_expression_t classify_type;
- alignof_expression_t alignofe;
-};
-
-typedef enum {
- STORAGE_CLASS_NONE,
- STORAGE_CLASS_TYPEDEF,
- STORAGE_CLASS_EXTERN,
- STORAGE_CLASS_STATIC,
- STORAGE_CLASS_AUTO,
- STORAGE_CLASS_REGISTER,
- STORAGE_CLASS_ENUM_ENTRY,
- STORAGE_CLASS_THREAD,
- STORAGE_CLASS_THREAD_EXTERN,
- STORAGE_CLASS_THREAD_STATIC
-} storage_class_tag_t;
-
-typedef enum {
- NAMESPACE_NORMAL,
- NAMESPACE_STRUCT,
- NAMESPACE_UNION,
- NAMESPACE_ENUM,
- NAMESPACE_LABEL,
-} namespace_t;
-
-typedef enum {
+ expression_kind_t kind;
+ expression_base_t base;
+ literal_expression_t literal;
+ string_literal_expression_t string_literal;
+ funcname_expression_t funcname;
+ compound_literal_expression_t compound_literal;
+ builtin_constant_expression_t builtin_constant;
+ builtin_types_compatible_expression_t builtin_types_compatible;
+ reference_expression_t reference;
+ call_expression_t call;
+ unary_expression_t unary;
+ binary_expression_t binary;
+ select_expression_t select;
+ array_access_expression_t array_access;
+ typeprop_expression_t typeprop;
+ offsetof_expression_t offsetofe;
+ va_start_expression_t va_starte;
+ va_arg_expression_t va_arge;
+ va_copy_expression_t va_copye;
+ conditional_expression_t conditional;
+ statement_expression_t statement;
+ classify_type_expression_t classify_type;
+ label_address_expression_t label_address;
+};
+
+typedef enum initializer_kind_t {
INITIALIZER_VALUE,
INITIALIZER_LIST,
INITIALIZER_STRING,
- INITIALIZER_WIDE_STRING
+ INITIALIZER_WIDE_STRING,
+ INITIALIZER_DESIGNATOR
} initializer_kind_t;
struct initializer_base_t {
};
struct initializer_value_t {
- initializer_base_t initializer;
+ initializer_base_t base;
expression_t *value;
};
struct initializer_list_t {
- initializer_base_t initializer;
+ initializer_base_t base;
size_t len;
initializer_t *initializers[];
};
struct initializer_string_t {
- initializer_base_t initializer;
+ initializer_base_t base;
string_t string;
};
struct initializer_wide_string_t {
- initializer_base_t initializer;
- wide_string_t string;
+ initializer_base_t base;
+ string_t string;
+};
+
+struct initializer_designator_t {
+ initializer_base_t base;
+ designator_t *designator;
};
union initializer_t {
initializer_list_t list;
initializer_string_t string;
initializer_wide_string_t wide_string;
+ initializer_designator_t designator;
};
-typedef enum {
- DM_DLLIMPORT = (1 << 0),
- DM_DLLEXPORT = (1 << 1),
- DM_THREAD = (1 << 2),
- DM_NAKED = (1 << 3),
- DM_FORCEINLINE = (1 << 4),
- DM_NOTHROW = (1 << 5),
- DM_NORETURN = (1 << 6),
- DM_NOINLINE = (1 << 7)
-} decl_modifier_t;
-
-typedef unsigned short decl_modifiers_t;
-
-struct declaration_t {
- unsigned char namespc;
- unsigned char storage_class;
- decl_modifiers_t modifiers;
- unsigned int address_taken : 1;
- unsigned int is_inline : 1;
- type_t *type;
- symbol_t *symbol;
- source_position_t source_position;
- union {
- bool is_defined;
- statement_t *statement;
- initializer_t *initializer;
- expression_t *enum_value;
- } init;
- scope_t scope;
- scope_t *parent_scope;
-
- /** next declaration in a scope */
- declaration_t *next;
- /** next declaration with same symbol */
- declaration_t *symbol_next;
-
- /* the following fields are used in ast2firm module */
- unsigned char declaration_kind;
- union {
- unsigned int value_number;
- ir_entity *entity;
- ir_node *block;
- tarval *enum_val;
- } v;
-};
-
-typedef enum {
- STATEMENT_INVALID,
+/**
+ * The statement kinds.
+ */
+typedef enum statement_kind_t {
+ STATEMENT_ERROR = 1,
+ STATEMENT_EMPTY,
STATEMENT_COMPOUND,
STATEMENT_RETURN,
STATEMENT_DECLARATION,
STATEMENT_WHILE,
STATEMENT_DO_WHILE,
STATEMENT_FOR,
- STATEMENT_ASM
+ STATEMENT_ASM,
+ STATEMENT_MS_TRY, /**< MS __try/__finally or __try/__except */
+ STATEMENT_LEAVE /**< MS __leave */
} statement_kind_t;
+/**
+ * The base class of every statement.
+ */
struct statement_base_t {
statement_kind_t kind;
- statement_t *next;
+ statement_t *next; /**< Point to the next statement in a compound statement. */
source_position_t source_position;
+ statement_t *parent; /**< The Parent statement that controls the execution. */
+ bool reachable; /**< True, if this statement is reachable. */
+#ifndef NDEBUG
+ bool transformed;
+#endif
};
struct return_statement_t {
- statement_base_t statement;
- expression_t *return_value;
+ statement_base_t base;
+ expression_t *value; /**< The return value if any. */
};
struct compound_statement_t {
- statement_base_t statement;
+ statement_base_t base;
statement_t *statements;
scope_t scope;
+ bool stmt_expr; /**< True if this compound statement is a statement expression. */
};
struct declaration_statement_t {
- statement_base_t statement;
- declaration_t *declarations_begin;
- declaration_t *declarations_end;
+ statement_base_t base;
+ entity_t *declarations_begin;
+ entity_t *declarations_end;
};
struct if_statement_t {
- statement_base_t statement;
+ statement_base_t base;
expression_t *condition;
statement_t *true_statement;
statement_t *false_statement;
};
struct switch_statement_t {
- statement_base_t statement;
+ statement_base_t base;
expression_t *expression;
statement_t *body;
- case_label_statement_t *first_case, *last_case;
+ case_label_statement_t *first_case, *last_case; /**< List of all cases, including default. */
+ case_label_statement_t *default_label; /**< The default label if existent. */
+ unsigned long default_proj_nr; /**< The Proj-number for the default Proj. */
};
struct goto_statement_t {
- statement_base_t statement;
- declaration_t *label;
- goto_statement_t *next; /**< link all goto statements in a function */
+ statement_base_t base;
+ label_t *label; /**< The destination label. */
+ expression_t *expression; /**< The expression for an assigned goto. */
+ goto_statement_t *next; /**< links all goto statements of a function */
};
struct case_label_statement_t {
- statement_base_t statement;
- expression_t *expression;
- statement_t *label_statement;
- case_label_statement_t *next; /**< link to the next case label in the switch */
+ statement_base_t base;
+ expression_t *expression; /**< The case label expression, NULL for default label. */
+ expression_t *end_range; /**< For GNUC case a .. b: the end range expression, NULL else. */
+ case_label_statement_t *next; /**< link to the next case label in switch */
+ statement_t *statement;
+ long first_case; /**< The folded value of expression. */
+ long last_case; /**< The folded value of end_range. */
+ bool is_bad; /**< If set marked as bad to suppress warnings. */
+ bool is_empty_range; /**< If set marked this as an empty range. */
};
struct label_statement_t {
- statement_base_t statement;
- declaration_t *label;
- statement_t *label_statement;
+ statement_base_t base;
+ label_t *label;
+ statement_t *statement;
+ label_statement_t *next; /**< links all label statements of a function */
};
struct expression_statement_t {
- statement_base_t statement;
+ statement_base_t base;
expression_t *expression;
};
struct while_statement_t {
- statement_base_t statement;
+ statement_base_t base;
expression_t *condition;
statement_t *body;
};
struct do_while_statement_t {
- statement_base_t statement;
+ statement_base_t base;
expression_t *condition;
statement_t *body;
};
struct for_statement_t {
- statement_base_t statement;
+ statement_base_t base;
expression_t *initialisation;
expression_t *condition;
expression_t *step;
statement_t *body;
scope_t scope;
+ bool condition_reachable:1;
+ bool step_reachable:1;
};
-struct asm_constraint_t {
- string_t constraints;
- expression_t *expression;
- symbol_t *symbol;
- asm_constraint_t *next;
+struct asm_argument_t {
+ string_t constraints;
+ expression_t *expression;
+ symbol_t *symbol;
+ asm_argument_t *next;
};
struct asm_clobber_t {
};
struct asm_statement_t {
- statement_base_t statement;
- string_t asm_text;
- asm_constraint_t *inputs;
- asm_constraint_t *outputs;
- asm_clobber_t *clobbers;
- bool is_volatile;
+ statement_base_t base;
+ string_t asm_text;
+ asm_argument_t *inputs;
+ asm_argument_t *outputs;
+ asm_clobber_t *clobbers;
+ bool is_volatile;
+};
+
+struct ms_try_statement_t {
+ statement_base_t base;
+ statement_t *try_statement;
+ expression_t *except_expression; /**< non-null for except, NULL for finally */
+ statement_t *final_statement;
+};
+
+struct leave_statement_t {
+ statement_base_t base;
};
union statement_t {
do_while_statement_t do_while;
for_statement_t fors;
asm_statement_t asms;
+ ms_try_statement_t ms_try;
+ leave_statement_t leave;
};
struct translation_unit_t {
- scope_t scope;
+ scope_t scope;
+ statement_t *global_asm;
};
-static inline
-void *_allocate_ast(size_t size)
+/**
+ * Allocate an AST node with given size and
+ * initialize all fields with zero.
+ */
+static inline void *allocate_ast_zero(size_t size)
{
- return obstack_alloc(&ast_obstack, size);
+ return memset(obstack_alloc(&ast_obstack, size), 0, size);
}
-#define allocate_ast(size) _allocate_ast(size)
+/** If set, implicit casts are printed. */
+extern bool print_implicit_casts;
+/** If set parenthesis are printed to indicate operator precedence. */
+extern bool print_parenthesis;
#endif
projects / cparser / blobdiff