X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ast_t.h;h=41367a9786c4cb9be03fb9a193d0dbf15fbaaf50;hb=6833c6f5a5ade3d5ad0c9ec21c9a89b7985517f4;hp=6b6b94ea4a000fdb423bc87b3aa73631ae727c3c;hpb=557c848ca7750e5aa7422a518850fc3f0aa42183;p=cparser diff --git a/ast_t.h b/ast_t.h index 6b6b94e..41367a9 100644 --- a/ast_t.h +++ b/ast_t.h @@ -1,6 +1,6 @@ /* * This file is part of cparser. - * Copyright (C) 2007-2008 Matthias Braun + * Copyright (C) 2007-2009 Matthias Braun * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License @@ -27,17 +27,53 @@ #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_CHARACTER_CONSTANT, - EXPR_WIDE_CHARACTER_CONSTANT, + 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, @@ -50,13 +86,14 @@ typedef enum { EXPR_ALIGNOF, EXPR_FUNCNAME, - EXPR_BUILTIN_SYMBOL, 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, @@ -70,10 +107,11 @@ typedef enum { 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, @@ -107,7 +145,6 @@ typedef enum { EXPR_BINARY_BITWISE_OR_ASSIGN, EXPR_BINARY_COMMA, - EXPR_BINARY_BUILTIN_EXPECT, EXPR_BINARY_ISGREATER, EXPR_BINARY_ISGREATEREQUAL, EXPR_BINARY_ISLESS, @@ -117,7 +154,7 @@ typedef enum { EXPR_BINARY_LAST = EXPR_BINARY_ISUNORDERED, } expression_kind_t; -typedef enum { +typedef enum funcname_kind_t { FUNCNAME_FUNCTION, /**< C99 __func__, older __FUNCTION__ */ FUNCNAME_PRETTY_FUNCTION, /**< GNUC __PRETTY_FUNCTION__ */ FUNCNAME_FUNCSIG, /**< MS __FUNCSIG__ */ @@ -156,7 +193,6 @@ typedef enum { 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: \ @@ -164,7 +200,10 @@ typedef enum { 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: \ @@ -176,34 +215,59 @@ typedef enum { 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: + case EXPR_UNARY_DELETE: \ + case EXPR_UNARY_DELETE_ARRAY: /** - * A scope containing declarations. + * unary expression with optional operand */ -struct scope_t { - declaration_t *declarations; /**< List of declarations in this scope. */ - declaration_t *last_declaration; /**< last declaration in this scope. */ -}; +#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 *type; - 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 + */ }; -struct const_expression_t { +/** + * integer/float constants, character and string literals + */ +struct literal_expression_t { expression_base_t base; - union { - long long int_value; - long double float_value; - string_t character; - wide_string_t wide_character; - } v; - bool is_ms_noop; /**< True, if this constant is the result - of an microsoft __noop operator */ + string_t value; + string_t suffix; + + /* ast2firm data */ + ir_tarval *target_value; }; struct string_literal_expression_t { @@ -217,54 +281,47 @@ struct funcname_expression_t { string_t value; /**< the value once assigned. */ }; -struct wide_string_literal_expression_t { - expression_base_t base; - wide_string_t value; -}; - struct compound_literal_expression_t { expression_base_t base; type_t *type; initializer_t *initializer; }; -struct builtin_symbol_expression_t { - expression_base_t base; - symbol_t *symbol; -}; - struct builtin_constant_expression_t { expression_base_t base; expression_t *value; }; -struct builtin_prefetch_expression_t { +struct builtin_types_compatible_expression_t { expression_base_t base; - expression_t *adr; - expression_t *rw; - expression_t *locality; + type_t *left; + type_t *right; }; struct reference_expression_t { expression_base_t base; - symbol_t *symbol; - declaration_t *declaration; + 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 base; - expression_t *function; - call_argument_t *arguments; + 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 base; - expression_t *value; + expression_t *value; /**< The unary operand. */ }; struct binary_expression_t { @@ -276,16 +333,14 @@ struct binary_expression_t { struct select_expression_t { 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 base; - expression_t *array_ref; - expression_t *index; - bool flipped; /* index/ref was written in a 5[a] way */ + 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 typeprop_expression_t { @@ -296,8 +351,8 @@ struct typeprop_expression_t { struct designator_t { source_position_t source_position; - symbol_t *symbol; - expression_t *array_index; + symbol_t *symbol; /**< the symbol if any */ + expression_t *array_index; /**< the array index if any */ designator_t *next; }; @@ -310,7 +365,7 @@ struct offsetof_expression_t { struct va_start_expression_t { expression_base_t base; expression_t *ap; - declaration_t *parameter; + variable_t *parameter; }; struct va_arg_expression_t { @@ -318,6 +373,12 @@ struct va_arg_expression_t { 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 base; expression_t *condition; @@ -335,54 +396,38 @@ struct classify_type_expression_t { 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; - funcname_expression_t funcname; - string_literal_expression_t string; - wide_string_literal_expression_t wide_string; - compound_literal_expression_t compound_literal; - 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; - typeprop_expression_t typeprop; - 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; -}; - -typedef enum { - STORAGE_CLASS_NONE, - STORAGE_CLASS_EXTERN, - STORAGE_CLASS_STATIC, - STORAGE_CLASS_TYPEDEF, - 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, @@ -412,7 +457,7 @@ struct initializer_string_t { struct initializer_wide_string_t { initializer_base_t base; - wide_string_t string; + string_t string; }; struct initializer_designator_t { @@ -431,70 +476,10 @@ union initializer_t { }; /** - * Extended microsoft modifier. + * The statement kinds. */ -typedef enum { - DM_DLLIMPORT = (1 << 0), - DM_DLLEXPORT = (1 << 1), - DM_THREAD = (1 << 2), - DM_NAKED = (1 << 3), - DM_MICROSOFT_INLINE = (1 << 4), - DM_FORCEINLINE = (1 << 5), - DM_SELECTANY = (1 << 6), - DM_NOTHROW = (1 << 7), - DM_NOVTABLE = (1 << 8), - DM_NORETURN = (1 << 9), - DM_NOINLINE = (1 << 10), - DM_RESTRICT = (1 << 11), - DM_NOALIAS = (1 << 12) -} decl_modifier_t; - -typedef unsigned short decl_modifiers_t; - -struct declaration_t { - unsigned char namespc; - unsigned char declared_storage_class; - unsigned char storage_class; - unsigned char alignment; /**< Alignment of the declaration, 0 for default. */ - decl_modifiers_t modifiers; /**< MS __declspec modifiers. */ - const char *deprecated_string; /**< MS deprecated string if any. */ - symbol_t *get_property_sym; /**< MS get property. */ - symbol_t *put_property_sym; /**< MS put property. */ - unsigned int address_taken : 1; - unsigned int is_inline : 1; - unsigned int used : 1; /**< Set if the declaration is used. */ - unsigned int deprecated : 1; /**< Microsoft of GNU deprecated attribute. */ - 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; /**< The scope that this declaration opens. */ - scope_t *parent_scope; /**< The parant scope where this declaration lives. */ - - /** 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; - ir_node *vla_base; - tarval *enum_val; - ir_type *irtype; - } v; -}; - -typedef enum { - STATEMENT_INVALID, +typedef enum statement_kind_t { + STATEMENT_ERROR = 1, STATEMENT_EMPTY, STATEMENT_COMPOUND, STATEMENT_RETURN, @@ -510,38 +495,41 @@ typedef enum { 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; -}; - -struct invalid_statement_t { - statement_base_t base; -}; - -struct empty_statement_t { - statement_base_t base; + 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 base; - expression_t *value; + expression_t *value; /**< The return value if any. */ }; struct compound_statement_t { 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 base; - declaration_t *declarations_begin; - declaration_t *declarations_end; + entity_t *declarations_begin; + entity_t *declarations_end; }; struct if_statement_t { @@ -552,29 +540,36 @@ struct if_statement_t { }; struct switch_statement_t { - statement_base_t base; + 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 base; - declaration_t *label; /**< The destination label. */ - goto_statement_t *next; /**< links all goto statements of a function */ + 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 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. */ + 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; - case_label_statement_t *next; /**< link to the next case label in switch */ + 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 base; - declaration_t *label; + label_t *label; statement_t *statement; label_statement_t *next; /**< links all label statements of a function */ }; @@ -603,13 +598,15 @@ struct for_statement_t { 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 { @@ -618,12 +615,23 @@ struct asm_clobber_t { }; struct asm_statement_t { + 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; - string_t asm_text; - asm_constraint_t *inputs; - asm_constraint_t *outputs; - asm_clobber_t *clobbers; - bool is_volatile; }; union statement_t { @@ -642,31 +650,27 @@ 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) -{ - return obstack_alloc(&ast_obstack, size); -} - -static inline -bool is_invalid_expression(expression_t *expression) -{ - return expression->base.kind == EXPR_INVALID; -} - -static inline -bool is_invalid_statement(statement_t *statement) +/** + * Allocate an AST node with given size and + * initialize all fields with zero. + */ +static inline void *allocate_ast_zero(size_t size) { - return statement->base.kind == STATEMENT_INVALID; + 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