2 * This file is part of cparser.
3 * Copyright (C) 2007-2009 Matthias Braun <matze@braunis.de>
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version 2
8 * of the License, or (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
26 #include <libfirm/firm_types.h>
34 typedef enum type_kind_t {
52 type_qualifiers_t qualifiers;
54 /* cached ast2firm infos */
59 * used for atomic types, complex and imaginary
61 struct atomic_type_t {
63 atomic_type_kind_t akind;
66 struct pointer_type_t {
69 variable_t *base_variable; /**< Microsoft __based() extension: base variable or NULL. */
72 struct reference_type_t {
80 expression_t *size_expression;
83 ir_node *size_node; /**< used by ast2firm phase */
85 bool is_static : 1; /**< a [static] type */
86 bool is_variable : 1; /**< a [*] type */
87 bool has_implicit_size : 1;
88 bool size_constant : 1; /**< size expression is constant */
89 bool is_vla : 1; /**< it's a variable length array */
93 * An entry in the parameter list of a function type.
95 struct function_parameter_t {
96 type_t *type; /**< The parameter type. */
97 function_parameter_t *next; /**< Points to the next type in the parameter list.*/
100 /** Linkage specifications. */
101 typedef enum linkage_kind_t {
102 LINKAGE_C = 1, /**< C linkage. */
103 LINKAGE_CXX /**< C++ linkage. */
106 /** Calling conventions. */
107 typedef enum cc_kind_t {
108 CC_DEFAULT, /**< default calling convention. */
109 CC_CDECL, /**< cdecl calling convention. */
110 CC_STDCALL, /**< stdcall calling convention. */
111 CC_FASTCALL, /**< fastcall calling convention. */
112 CC_THISCALL /**< thiscall calling convention. */
118 struct function_type_t {
120 type_t *return_type; /**< The return type. */
121 function_parameter_t *parameters; /**< A list of the parameter types. */
122 linkage_kind_t linkage;
123 cc_kind_t calling_convention; /**< The specified calling convention. */
124 decl_modifiers_t modifiers;
126 bool unspecified_parameters : 1;
127 bool kr_style_parameters : 1;
130 struct compound_type_t {
132 bool packed : 1; /**< Set if packed was specified. */
133 /** the declaration of the compound type, the scope of the declaration
134 * contains the compound entries. */
135 compound_t *compound;
140 /** the enum entity. You can find the enum entries by walking the
141 * enum->base.next list until you don't find ENTITY_ENUM_VALUE entities
146 struct typedef_type_t {
149 type_t *resolved_type;
152 struct typeof_type_t {
154 expression_t *expression;
156 type_t *resolved_type;
162 atomic_type_t atomic;
163 pointer_type_t pointer;
164 reference_type_t reference;
166 function_type_t function;
167 compound_type_t compound;
169 typedef_type_t typedeft;
170 typeof_type_t typeoft;
173 typedef struct atomic_type_properties_t atomic_type_properties_t;
174 struct atomic_type_properties_t {
175 unsigned size; /**< type size in bytes */
176 unsigned alignment; /**< type alignment in bytes */
177 /** some ABIs are broken and require an alignment different from the
178 * recommended/best alignment inside structs. Fixing ABIs is difficult
179 * so people rather stick with the wrong values for compatibility.
180 * (double type on x86 System V ABI)
182 unsigned struct_alignment;
183 unsigned flags; /**< type flags from atomic_type_flag_t */
184 unsigned rank; /**< integer conversion rank */
187 extern atomic_type_properties_t atomic_type_properties[ATOMIC_TYPE_LAST+1];
188 extern atomic_type_properties_t pointer_properties;
190 /** The default calling convention for functions. */
191 extern cc_kind_t default_calling_convention;
193 type_t *make_atomic_type(atomic_type_kind_t type, type_qualifiers_t qualifiers);
194 type_t *make_complex_type(atomic_type_kind_t type, type_qualifiers_t qualifiers);
195 type_t *make_imaginary_type(atomic_type_kind_t type, type_qualifiers_t qualifiers);
196 type_t *make_pointer_type(type_t *points_to, type_qualifiers_t qualifiers);
197 type_t *make_reference_type(type_t *refers_to);
198 type_t *make_based_pointer_type(type_t *points_to,
199 type_qualifiers_t qualifiers, variable_t *variable);
200 type_t *make_array_type(type_t *element_type, size_t size,
201 type_qualifiers_t qualifiers);
202 function_parameter_t *allocate_parameter(type_t*);
207 * @param type The type to copy.
208 * @return A copy of the type.
210 * @note This does not produce a deep copy!
212 type_t *duplicate_type(const type_t *type);
214 type_t *identify_new_type(type_t *type);
216 static inline bool is_typeref(const type_t *type)
218 return type->kind == TYPE_TYPEDEF || type->kind == TYPE_TYPEOF;
221 static inline bool is_type_atomic(const type_t *type, atomic_type_kind_t atype)
223 assert(!is_typeref(type));
225 if(type->kind != TYPE_ATOMIC)
227 const atomic_type_t *atomic_type = &type->atomic;
229 return atomic_type->akind == atype;
232 static inline bool is_type_void(type_t const *const type)
234 return is_type_atomic(type, ATOMIC_TYPE_VOID);
237 static inline bool is_type_pointer(const type_t *type)
239 assert(!is_typeref(type));
240 return type->kind == TYPE_POINTER;
243 static inline bool is_type_reference(const type_t *type)
245 assert(!is_typeref(type));
246 return type->kind == TYPE_REFERENCE;
249 static inline bool is_type_array(const type_t *type)
251 assert(!is_typeref(type));
252 return type->kind == TYPE_ARRAY;
255 static inline bool is_type_function(const type_t *type)
257 assert(!is_typeref(type));
258 return type->kind == TYPE_FUNCTION;
261 static inline bool is_type_union(const type_t *type)
263 assert(!is_typeref(type));
264 return type->kind == TYPE_COMPOUND_UNION;
267 static inline bool is_type_struct(const type_t *type)
269 assert(!is_typeref(type));
270 return type->kind == TYPE_COMPOUND_STRUCT;
273 static inline bool is_type_compound(const type_t *type)
275 assert(!is_typeref(type));
276 return type->kind == TYPE_COMPOUND_STRUCT
277 || type->kind == TYPE_COMPOUND_UNION;
280 static inline bool is_type_valid(const type_t *type)
282 assert(!is_typeref(type));
283 return type->kind != TYPE_ERROR;
287 * return integer conversion rank of an atomic type kind
289 static inline unsigned get_akind_rank(atomic_type_kind_t akind)
291 return atomic_type_properties[akind].rank;
295 * Allocate a type node of given kind and initialize all
298 * @param kind type kind to allocate
300 type_t *allocate_type_zero(type_kind_t kind);
303 * Creates a return_type (func)(void) function type if not
306 * @param return_type the return type
308 type_t *make_function_0_type(type_t *return_type,
309 decl_modifiers_t modifiers);
312 * Creates a return_type (func)(argument_type) function type if not
315 * @param return_type the return type
316 * @param argument_type the argument type
318 type_t *make_function_1_type(type_t *return_type, type_t *argument_type1,
319 decl_modifiers_t modifiers);
323 * Creates a return_type (func)(argument_type1,argument_type2) function type
324 * if not already exists.
326 type_t *make_function_2_type(type_t *return_type, type_t *argument_type1,
327 type_t *argument_type2,
328 decl_modifiers_t modifiers);
331 * Creates a return_type (func)(argument_type, ...) function type if not
334 * @param return_type the return type
335 * @param argument_type the argument type
337 type_t *make_function_1_type_variadic(type_t *return_type,
338 type_t *argument_type,
339 decl_modifiers_t modifiers);
342 * Create a function type with n parameters
344 type_t *make_function_type(type_t *return_type, int n_types,
345 type_t *const *argument_types,
346 decl_modifiers_t modifiers);