src/cdecl.h

   1 #ifndef CDECL_H_
   2 #define CDECL_H_
   3
   4 #include <stddef.h>
   5 #include <stdint.h>
   6
   7 /* Declaration specifier kinds. */
   8 enum {
   9         CDECL_SPEC_TYPE = 0,
  10         CDECL_SPEC_STOR = 256,
  11         CDECL_SPEC_QUAL = 512,
  12         CDECL_SPEC_FUNC = 1024,
  13 };
  14
  15 enum {
  16         CDECL_TYPE_VOID = CDECL_SPEC_TYPE,
  17         CDECL_TYPE_CHAR,
  18         CDECL_TYPE_SHORT,
  19         CDECL_TYPE_INT,
  20         CDECL_TYPE_LONG,
  21         CDECL_TYPE_FLOAT,
  22         CDECL_TYPE_DOUBLE,
  23         CDECL_TYPE_SIGNED,
  24         CDECL_TYPE_UNSIGNED,
  25         CDECL_TYPE_BOOL,
  26         CDECL_TYPE_COMPLEX,
  27         CDECL_TYPE_STRUCT,
  28         CDECL_TYPE_UNION,
  29         CDECL_TYPE_ENUM,
  30         CDECL_TYPE_IDENT,
  31         CDECL_STOR_TYPEDEF = CDECL_SPEC_STOR,
  32         CDECL_STOR_EXTERN,
  33         CDECL_STOR_STATIC,
  34         CDECL_STOR_AUTO,
  35         CDECL_STOR_REGISTER,
  36         CDECL_QUAL_RESTRICT = CDECL_SPEC_QUAL,
  37         CDECL_QUAL_VOLATILE,
  38         CDECL_QUAL_CONST,
  39         CDECL_FUNC_INLINE = CDECL_SPEC_FUNC,
  40 };
  41
  42 /* Declarator types. */
  43 enum {
  44         CDECL_DECL_NULL,
  45         CDECL_DECL_IDENT,
  46         CDECL_DECL_POINTER,
  47         CDECL_DECL_ARRAY,
  48 };
  49
  50 struct cdecl {
  51         struct cdecl *next;
  52
  53         struct cdecl_declspec {
  54                 struct cdecl_declspec *next;
  55                 unsigned type;
  56                 char *ident;
  57         } *specifiers;
  58
  59         struct cdecl_declarator {
  60                 struct cdecl_declarator *child;
  61                 unsigned type;
  62                 union {
  63                         char *ident;
  64                         struct cdecl_pointer {
  65                                 struct cdecl_declspec *qualifiers;
  66                         } pointer;
  67                         struct cdecl_array {
  68                                 char *vla;
  69                                 uintmax_t length;
  70                         } array;
  71                 } u;
  72         } *declarators;
  73 };
  74
  75 struct cdecl *cdecl_parse_decl(const char *declstr);
  76 void cdecl_free(struct cdecl *decl);
  77
  78 size_t cdecl_explain(char *buf, size_t n, struct cdecl *decl);
  79
  80 static inline int cdecl_spec_kind(struct cdecl_declspec *spec)
  81 {
  82         return spec->type & ~0xffu;
  83 }
  84
  85 #endif