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