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