nsz Git - cparser/blob - type_t.h

   1 #ifndef TYPE_T_H
   2 #define TYPE_T_H
   3
   4 #include <stdbool.h>
   5 #include <assert.h>
   6
   7 #include <libfirm/firm_types.h>
   8
   9 #include "type.h"
  10 #include "symbol.h"
  11 #include "token_t.h"
  12 #include "ast_t.h"
  13 #include "adt/obst.h"
  14
  15 extern struct obstack *type_obst;
  16
  17 typedef enum {
  18         TYPE_INVALID,
  19         TYPE_ERROR,
  20         TYPE_ATOMIC,
  21         TYPE_COMPOUND_STRUCT,
  22         TYPE_COMPOUND_UNION,
  23         TYPE_ENUM,
  24         TYPE_FUNCTION,
  25         TYPE_POINTER,
  26         TYPE_ARRAY,
  27         TYPE_BITFIELD,
  28         TYPE_BUILTIN,
  29         TYPE_TYPEDEF,
  30         TYPE_TYPEOF,
  31 } type_kind_t;
  32
  33 /* note that the constant values represent the rank of the types as defined
  34  * in § 6.3.1 */
  35 typedef enum {
  36         ATOMIC_TYPE_INVALID = 0,
  37         ATOMIC_TYPE_VOID,
  38         ATOMIC_TYPE_CHAR,
  39         ATOMIC_TYPE_SCHAR,
  40         ATOMIC_TYPE_UCHAR,
  41         ATOMIC_TYPE_SHORT,
  42         ATOMIC_TYPE_USHORT,
  43         ATOMIC_TYPE_INT,
  44         ATOMIC_TYPE_UINT,
  45         ATOMIC_TYPE_LONG,
  46         ATOMIC_TYPE_ULONG,
  47         ATOMIC_TYPE_LONGLONG,
  48         ATOMIC_TYPE_ULONGLONG,
  49         ATOMIC_TYPE_FLOAT,
  50         ATOMIC_TYPE_DOUBLE,
  51         ATOMIC_TYPE_LONG_DOUBLE,
  52         ATOMIC_TYPE_BOOL,
  53 #ifdef PROVIDE_COMPLEX
  54         ATOMIC_TYPE_FLOAT_COMPLEX,
  55         ATOMIC_TYPE_DOUBLE_COMPLEX,
  56         ATOMIC_TYPE_LONG_DOUBLE_COMPLEX,
  57         ATOMIC_TYPE_FLOAT_IMAGINARY,
  58         ATOMIC_TYPE_DOUBLE_IMAGINARY,
  59         ATOMIC_TYPE_LONG_DOUBLE_IMAGINARY,
  60 #endif
  61         ATOMIC_TYPE_LAST
  62 } atomic_type_kind_t;
  63
  64 typedef enum {
  65         TYPE_QUALIFIER_NONE     = 0,
  66         TYPE_QUALIFIER_CONST    = 1 << 0,
  67         TYPE_QUALIFIER_RESTRICT = 1 << 1,
  68         TYPE_QUALIFIER_VOLATILE = 1 << 2,
  69 } type_qualifier_t;
  70
  71 typedef unsigned int type_qualifiers_t;
  72
  73 struct type_base_t {
  74         type_kind_t       kind;
  75         type_qualifiers_t qualifiers;
  76         source_position_t source_position;
  77
  78         ir_type          *firm_type;
  79 };
  80
  81 struct atomic_type_t {
  82         type_base_t         type;
  83         atomic_type_kind_t  akind;
  84 };
  85
  86 struct builtin_type_t {
  87         type_base_t  type;
  88         symbol_t    *symbol;
  89         type_t      *real_type;
  90 };
  91
  92 struct pointer_type_t {
  93         type_base_t  type;
  94         type_t      *points_to;
  95 };
  96
  97 struct array_type_t {
  98         type_base_t   type;
  99         type_t       *element_type;
 100         expression_t *size_expression;
 101         size_t        size;
 102         unsigned      is_static         : 1;
 103         unsigned      is_variable       : 1;
 104         unsigned      has_implicit_size : 1;
 105         unsigned      size_constant     : 1;
 106 };
 107
 108 struct function_parameter_t {
 109         type_t               *type;
 110         function_parameter_t *next;
 111 };
 112
 113 struct function_type_t {
 114         type_base_t           type;
 115         type_t               *return_type;
 116         function_parameter_t *parameters;
 117         unsigned              variadic : 1;
 118         unsigned              unspecified_parameters : 1;
 119         unsigned              kr_style_parameters : 1;
 120 };
 121
 122 struct compound_type_t {
 123         type_base_t    type;
 124         /** the declaration of the compound type, the scope of the declaration
 125          *  contains the compound entries. */
 126         declaration_t *declaration;
 127 };
 128
 129 struct enum_type_t {
 130         type_base_t    type;
 131         /** the declaration of the enum type. You can find the enum entries by
 132          *  walking the declaration->next list until you don't find
 133          *  STORAGE_CLASS_ENUM_ENTRY declarations anymore */
 134         declaration_t *declaration;
 135 };
 136
 137 struct typedef_type_t {
 138         type_base_t    type;
 139         declaration_t *declaration;
 140         type_t        *resolved_type;
 141 };
 142
 143 struct typeof_type_t {
 144         type_base_t   type;
 145         expression_t *expression;
 146         type_t       *typeof_type;
 147         type_t       *resolved_type;
 148 };
 149
 150 struct bitfield_type_t {
 151         type_base_t   type;
 152         type_t       *base;
 153         expression_t *size;
 154 };
 155
 156 union type_t {
 157         type_kind_t      kind;
 158         type_base_t      base;
 159         atomic_type_t    atomic;
 160         builtin_type_t   builtin;
 161         pointer_type_t   pointer;
 162         array_type_t     array;
 163         function_type_t  function;
 164         compound_type_t  compound;
 165         enum_type_t      enumt;
 166         typedef_type_t   typedeft;
 167         bitfield_type_t  bitfield;
 168         typeof_type_t    typeoft;
 169 };
 170
 171 type_t *make_atomic_type(atomic_type_kind_t type, type_qualifiers_t qualifiers);
 172 type_t *make_pointer_type(type_t *points_to, type_qualifiers_t qualifiers);
 173 type_t *make_array_type(type_t *element_type, size_t size,
 174                         type_qualifiers_t qualifiers);
 175
 176 type_t *duplicate_type(const type_t *type);
 177
 178 static inline bool is_typeref(const type_t *type)
 179 {
 180         return type->kind == TYPE_TYPEDEF || type->kind == TYPE_TYPEOF;
 181 }
 182
 183 static inline bool is_type_atomic(const type_t *type, atomic_type_kind_t atype)
 184 {
 185         assert(!is_typeref(type));
 186
 187         if(type->kind != TYPE_ATOMIC)
 188                 return false;
 189         const atomic_type_t *atomic_type = &type->atomic;
 190
 191         return atomic_type->akind == atype;
 192 }
 193
 194 static inline bool is_type_pointer(const type_t *type)
 195 {
 196         assert(!is_typeref(type));
 197         return type->kind == TYPE_POINTER;
 198 }
 199
 200 static inline bool is_type_array(const type_t *type)
 201 {
 202         assert(!is_typeref(type));
 203         return type->kind == TYPE_ARRAY;
 204 }
 205
 206 static inline bool is_type_function(const type_t *type)
 207 {
 208         assert(!is_typeref(type));
 209         return type->kind == TYPE_FUNCTION;
 210 }
 211
 212 static inline bool is_type_union(const type_t *type)
 213 {
 214         assert(!is_typeref(type));
 215         return type->kind == TYPE_COMPOUND_UNION;
 216 }
 217
 218 static inline bool is_type_struct(const type_t *type)
 219 {
 220         assert(!is_typeref(type));
 221         return type->kind == TYPE_COMPOUND_STRUCT;
 222 }
 223
 224 static inline bool is_type_builtin(const type_t *type)
 225 {
 226         assert(!is_typeref(type));
 227         return type->kind == TYPE_BUILTIN;
 228 }
 229
 230 static inline bool is_type_compound(const type_t *type)
 231 {
 232         assert(!is_typeref(type));
 233         return type->kind == TYPE_COMPOUND_STRUCT
 234                 || type->kind == TYPE_COMPOUND_UNION;
 235 }
 236
 237 static inline bool is_type_valid(const type_t *type)
 238 {
 239         return type->kind != TYPE_ERROR;
 240 }
 241
 242 #endif