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
  77         ir_type          *firm_type;
  78 };
  79
  80 struct atomic_type_t {
  81         type_base_t         type;
  82         atomic_type_kind_t  akind;
  83 };
  84
  85 struct builtin_type_t {
  86         type_base_t  type;
  87         symbol_t    *symbol;
  88         type_t      *real_type;
  89 };
  90
  91 struct pointer_type_t {
  92         type_base_t  type;
  93         type_t      *points_to;
  94 };
  95
  96 struct array_type_t {
  97         type_base_t   type;
  98         type_t       *element_type;
  99         expression_t *size;
 100         unsigned      is_static         : 1;
 101         unsigned      is_variable       : 1;
 102         unsigned      has_implicit_size : 1;
 103 };
 104
 105 struct function_parameter_t {
 106         type_t               *type;
 107         function_parameter_t *next;
 108 };
 109
 110 struct function_type_t {
 111         type_base_t           type;
 112         type_t               *return_type;
 113         function_parameter_t *parameters;
 114         unsigned              variadic : 1;
 115         unsigned              unspecified_parameters : 1;
 116         unsigned              kr_style_parameters : 1;
 117 };
 118
 119 struct compound_type_t {
 120         type_base_t    type;
 121         /** the declaration of the compound type, the scope of the declaration
 122          *  contains the compound entries. */
 123         declaration_t *declaration;
 124 };
 125
 126 struct enum_type_t {
 127         type_base_t    type;
 128         /** the declaration of the enum type. You can find the enum entries by
 129          *  walking the declaration->next list until you don't find
 130          *  STORAGE_CLASS_ENUM_ENTRY declarations anymore */
 131         declaration_t *declaration;
 132 };
 133
 134 struct typedef_type_t {
 135         type_base_t    type;
 136         declaration_t *declaration;
 137         type_t        *resolved_type;
 138 };
 139
 140 struct typeof_type_t {
 141         type_base_t   type;
 142         expression_t *expression;
 143         type_t       *typeof_type;
 144         type_t       *resolved_type;
 145 };
 146
 147 struct bitfield_type_t {
 148         type_base_t   type;
 149         type_t       *base;
 150         expression_t *size;
 151 };
 152
 153 union type_t {
 154         type_kind_t      kind;
 155         type_base_t      base;
 156         atomic_type_t    atomic;
 157         builtin_type_t   builtin;
 158         pointer_type_t   pointer;
 159         array_type_t     array;
 160         function_type_t  function;
 161         compound_type_t  compound;
 162         enum_type_t      enumt;
 163         typedef_type_t   typedeft;
 164         bitfield_type_t  bitfield;
 165         typeof_type_t    typeoft;
 166 };
 167
 168 type_t *make_atomic_type(atomic_type_kind_t type, type_qualifiers_t qualifiers);
 169 type_t *make_pointer_type(type_t *points_to, type_qualifiers_t qualifiers);
 170
 171 type_t *duplicate_type(const type_t *type);
 172
 173 static inline bool is_typeref(const type_t *type)
 174 {
 175         return type->kind == TYPE_TYPEDEF || type->kind == TYPE_TYPEOF;
 176 }
 177
 178 static inline bool is_type_atomic(const type_t *type, atomic_type_kind_t atype)
 179 {
 180         assert(!is_typeref(type));
 181
 182         if(type->kind != TYPE_ATOMIC)
 183                 return false;
 184         const atomic_type_t *atomic_type = &type->atomic;
 185
 186         return atomic_type->akind == atype;
 187 }
 188
 189 static inline bool is_type_pointer(const type_t *type)
 190 {
 191         assert(!is_typeref(type));
 192         return type->kind == TYPE_POINTER;
 193 }
 194
 195 static inline bool is_type_array(const type_t *type)
 196 {
 197         assert(!is_typeref(type));
 198         return type->kind == TYPE_ARRAY;
 199 }
 200
 201 static inline bool is_type_function(const type_t *type)
 202 {
 203         assert(!is_typeref(type));
 204         return type->kind == TYPE_FUNCTION;
 205 }
 206
 207 static inline bool is_type_compound(const type_t *type)
 208 {
 209         assert(!is_typeref(type));
 210         return type->kind == TYPE_COMPOUND_STRUCT
 211                 || type->kind == TYPE_COMPOUND_UNION;
 212 }
 213
 214 static inline bool is_type_valid(const type_t *type)
 215 {
 216         return type->kind != TYPE_ERROR;
 217 }
 218
 219 #endif