X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=type_t.h;h=262fb631d2d1f84c908f8ee5040fa3857063ce7f;hb=7473d9545525216a1276296dbc1759e07972cf96;hp=dfacdfafc84e2ac8d441c4dcded07d1caac2e372;hpb=28f3ec76a317d3e977bb200e5fd18841c1bf5619;p=cparser diff --git a/type_t.h b/type_t.h index dfacdfa..262fb63 100644 --- a/type_t.h +++ b/type_t.h @@ -1,21 +1,6 @@ /* * This file is part of cparser. - * Copyright (C) 2007-2008 Matthias Braun - * - * 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 */ #ifndef TYPE_T_H #define TYPE_T_H @@ -25,17 +10,11 @@ #include +#include "ast.h" #include "type.h" -#include "symbol.h" -#include "token_t.h" -#include "ast_t.h" -#include "adt/obst.h" - -extern struct obstack *type_obst; typedef enum type_kind_t { - TYPE_INVALID, - TYPE_ERROR, + TYPE_ERROR = 1, TYPE_ATOMIC, TYPE_COMPLEX, TYPE_IMAGINARY, @@ -44,54 +23,37 @@ typedef enum type_kind_t { TYPE_ENUM, TYPE_FUNCTION, TYPE_POINTER, + TYPE_REFERENCE, TYPE_ARRAY, - TYPE_BITFIELD, - TYPE_BUILTIN, TYPE_TYPEDEF, TYPE_TYPEOF, } type_kind_t; -typedef enum type_modifier_t { - TYPE_MODIFIER_NONE = 0, - TYPE_MODIFIER_TRANSPARENT_UNION = 1 << 0, -} type_modifier_t; -typedef unsigned short type_modifiers_t; - struct type_base_t { type_kind_t kind; - il_size_t size; /**< The size of this type. */ type_qualifiers_t qualifiers; - type_modifiers_t modifiers; - il_alignment_t alignment; /**< The extra alignment of the type, 0 for default. */ + /* cached ast2firm infos */ ir_type *firm_type; }; +/** + * used for atomic types, complex and imaginary and as base for enum + */ struct atomic_type_t { type_base_t base; atomic_type_kind_t akind; }; -struct complex_type_t { - type_base_t base; - atomic_type_kind_t akind; -}; - -struct imaginary_type_t { - type_base_t base; - atomic_type_kind_t akind; -}; - -struct builtin_type_t { +struct pointer_type_t { type_base_t base; - symbol_t *symbol; - type_t *real_type; + type_t *points_to; + variable_t *base_variable; /**< Microsoft __based() extension: base variable or NULL. */ }; -struct pointer_type_t { +struct reference_type_t { type_base_t base; - type_t *points_to; - variable_t *base_variable; /**< Microsoft __based() extension */ + type_t *refers_to; }; struct array_type_t { @@ -119,8 +81,7 @@ struct function_parameter_t { /** Linkage specifications. */ typedef enum linkage_kind_t { - LINKAGE_INVALID, - LINKAGE_C, /**< C linkage. */ + LINKAGE_C = 1, /**< C linkage. */ LINKAGE_CXX /**< C++ linkage. */ } linkage_kind_t; @@ -142,25 +103,26 @@ struct function_type_t { function_parameter_t *parameters; /**< A list of the parameter types. */ linkage_kind_t linkage; cc_kind_t calling_convention; /**< The specified calling convention. */ + decl_modifiers_t modifiers; bool variadic : 1; bool unspecified_parameters : 1; bool kr_style_parameters : 1; }; struct compound_type_t { - type_base_t base; - bool packed : 1; /**< Set if packed was specified. */ + type_base_t base; + bool packed : 1; /**< Set if packed was specified. */ /** the declaration of the compound type, the scope of the declaration * contains the compound entries. */ - compound_t *compound; + compound_t *compound; }; struct enum_type_t { - type_base_t base; + atomic_type_t base; /** the enum entity. You can find the enum entries by walking the * enum->base.next list until you don't find ENTITY_ENUM_VALUE entities * anymore */ - enum_t *enume; + enum_t *enume; }; struct typedef_type_t { @@ -176,41 +138,63 @@ struct typeof_type_t { type_t *resolved_type; }; -struct bitfield_type_t { - type_base_t base; - type_t *base_type; - expression_t *size_expression; /**< The expression for the bit size. */ - il_size_t bit_size; /**< Size of this bitfield in bits. */ -}; - union type_t { type_kind_t kind; type_base_t base; atomic_type_t atomic; - complex_type_t complex; - imaginary_type_t imaginary; - builtin_type_t builtin; pointer_type_t pointer; + reference_type_t reference; array_type_t array; function_type_t function; compound_type_t compound; enum_type_t enumt; typedef_type_t typedeft; - bitfield_type_t bitfield; typeof_type_t typeoft; }; +typedef struct atomic_type_properties_t atomic_type_properties_t; +struct atomic_type_properties_t { + unsigned size; /**< type size in bytes */ + unsigned alignment; /**< type alignment in bytes */ + /** some ABIs are broken and require an alignment different from the + * recommended/best alignment inside structs. Fixing ABIs is difficult + * so people rather stick with the wrong values for compatibility. + * (double type on x86 System V ABI) + */ + unsigned struct_alignment; + unsigned flags; /**< type flags from atomic_type_flag_t */ + unsigned rank; /**< integer conversion rank */ +}; + +extern atomic_type_properties_t atomic_type_properties[ATOMIC_TYPE_LAST+1]; +extern atomic_type_properties_t pointer_properties; + +/** The default calling convention for functions. */ +extern cc_kind_t default_calling_convention; + type_t *make_atomic_type(atomic_type_kind_t type, type_qualifiers_t qualifiers); type_t *make_complex_type(atomic_type_kind_t type, type_qualifiers_t qualifiers); type_t *make_imaginary_type(atomic_type_kind_t type, type_qualifiers_t qualifiers); type_t *make_pointer_type(type_t *points_to, type_qualifiers_t qualifiers); +type_t *make_reference_type(type_t *refers_to); type_t *make_based_pointer_type(type_t *points_to, type_qualifiers_t qualifiers, variable_t *variable); type_t *make_array_type(type_t *element_type, size_t size, type_qualifiers_t qualifiers); +function_parameter_t *allocate_parameter(type_t*); +/** + * Duplicates a type. + * + * @param type The type to copy. + * @return A copy of the type. + * + * @note This does not produce a deep copy! + */ type_t *duplicate_type(const type_t *type); +type_t *identify_new_type(type_t *type); + static inline bool is_typeref(const type_t *type) { return type->kind == TYPE_TYPEDEF || type->kind == TYPE_TYPEOF; @@ -220,19 +204,30 @@ static inline bool is_type_atomic(const type_t *type, atomic_type_kind_t atype) { assert(!is_typeref(type)); - if(type->kind != TYPE_ATOMIC) + if (type->kind != TYPE_ATOMIC) return false; const atomic_type_t *atomic_type = &type->atomic; return atomic_type->akind == atype; } +static inline bool is_type_void(type_t const *const type) +{ + return is_type_atomic(type, ATOMIC_TYPE_VOID); +} + static inline bool is_type_pointer(const type_t *type) { assert(!is_typeref(type)); return type->kind == TYPE_POINTER; } +static inline bool is_type_reference(const type_t *type) +{ + assert(!is_typeref(type)); + return type->kind == TYPE_REFERENCE; +} + static inline bool is_type_array(const type_t *type) { assert(!is_typeref(type)); @@ -257,12 +252,6 @@ static inline bool is_type_struct(const type_t *type) return type->kind == TYPE_COMPOUND_STRUCT; } -static inline bool is_type_builtin(const type_t *type) -{ - assert(!is_typeref(type)); - return type->kind == TYPE_BUILTIN; -} - static inline bool is_type_compound(const type_t *type) { assert(!is_typeref(type)); @@ -276,4 +265,79 @@ static inline bool is_type_valid(const type_t *type) return type->kind != TYPE_ERROR; } +/** + * return integer conversion rank of an atomic type kind + */ +static inline unsigned get_akind_rank(atomic_type_kind_t akind) +{ + return atomic_type_properties[akind].rank; +} + +static inline bool is_akind_signed(atomic_type_kind_t akind) +{ + return atomic_type_properties[akind].flags & ATOMIC_TYPE_FLAG_SIGNED; +} + +static inline atomic_type_kind_t get_arithmetic_akind(const type_t *type) +{ + assert(type->kind == TYPE_ATOMIC || type->kind == TYPE_COMPLEX + || type->kind == TYPE_IMAGINARY || type->kind == TYPE_ENUM); + /* note that atomic, complex and enum share atomic_type_t base */ + return type->atomic.akind; +} + +/** + * Allocate a type node of given kind and initialize all + * fields with zero. + * + * @param kind type kind to allocate + */ +type_t *allocate_type_zero(type_kind_t kind); + +/** + * Creates a return_type (func)(void) function type if not + * already exists. + * + * @param return_type the return type + */ +type_t *make_function_0_type(type_t *return_type, + decl_modifiers_t modifiers); + +/** + * Creates a return_type (func)(argument_type) function type if not + * already exists. + * + * @param return_type the return type + * @param argument_type the argument type + */ +type_t *make_function_1_type(type_t *return_type, type_t *argument_type1, + decl_modifiers_t modifiers); + + +/** + * Creates a return_type (func)(argument_type1,argument_type2) function type + * if not already exists. + */ +type_t *make_function_2_type(type_t *return_type, type_t *argument_type1, + type_t *argument_type2, + decl_modifiers_t modifiers); + +/** + * Creates a return_type (func)(argument_type, ...) function type if not + * already exists. + * + * @param return_type the return type + * @param argument_type the argument type + */ +type_t *make_function_1_type_variadic(type_t *return_type, + type_t *argument_type, + decl_modifiers_t modifiers); + +/** + * Create a function type with n parameters + */ +type_t *make_function_type(type_t *return_type, int n_types, + type_t *const *argument_types, + decl_modifiers_t modifiers); + #endif