c-gperf.h

gcc库的原代码,对编程有很大帮助.

/* C code produced by gperf version 2.5 (GNU C++ version) */
/* Command-line: gperf -p -j1 -i 1 -g -o -t -G -N is_reserved_word -k1,3,$ c-parse.gperf  */
struct resword { char *name; short token; enum rid rid; };

#define TOTAL_KEYWORDS 79
#define MIN_WORD_LENGTH 2
#define MAX_WORD_LENGTH 20
#define MIN_HASH_VALUE 10
#define MAX_HASH_VALUE 144
/* maximum key range = 135, duplicates = 0 */

#ifdef __GNUC__
__inline
#endif
static unsigned int
hash (str, len)
     register char *str;
     register int unsigned len;
{
  static unsigned char asso_values[] =
    {
     145, 145, 145, 145, 145, 145, 145, 145, 145, 145,
     145, 145, 145, 145, 145, 145, 145, 145, 145, 145,
     145, 145, 145, 145, 145, 145, 145, 145, 145, 145,
     145, 145, 145, 145, 145, 145, 145, 145, 145, 145,
     145, 145, 145, 145, 145, 145, 145, 145, 145, 145,
     145, 145, 145, 145, 145, 145, 145, 145, 145, 145,
     145, 145, 145, 145,  25, 145, 145, 145, 145, 145,
     145, 145, 145, 145, 145, 145, 145, 145, 145, 145,
     145, 145, 145, 145, 145, 145, 145, 145, 145, 145,
     145, 145, 145, 145, 145,   1, 145,  46,   8,  15,
      61,   6,  36,  48,   3,   5, 145,  18,  63,  25,
      29,  76,   1, 145,  13,   2,   1,  51,  37,   9,
       9,   1,   3, 145, 145, 145, 145, 145,
    };
  register int hval = len;

  switch (hval)
    {
      default:
      case 3:
        hval += asso_values[str[2]];
      case 2:
      case 1:
        hval += asso_values[str[0]];
    }
  return hval + asso_values[str[len - 1]];
}

static struct resword wordlist[] =
{
  {"",}, {"",}, {"",}, {"",}, {"",}, {"",}, {"",}, {"",}, {"",}, 
  {"",}, 
  {"int",  TYPESPEC, RID_INT},
  {"",}, {"",}, 
  {"__typeof__",  TYPEOF, NORID},
  {"__signed__",  TYPESPEC, RID_SIGNED},
  {"__imag__",  IMAGPART, NORID},
  {"switch",  SWITCH, NORID},
  {"__inline__",  SCSPEC, RID_INLINE},
  {"else",  ELSE, NORID},
  {"__iterator__",  SCSPEC, RID_ITERATOR},
  {"__inline",  SCSPEC, RID_INLINE},
  {"__extension__",  EXTENSION, NORID},
  {"struct",  STRUCT, NORID},
  {"__real__",  REALPART, NORID},
  {"__const",  TYPE_QUAL, RID_CONST},
  {"while",  WHILE, NORID},
  {"__const__",  TYPE_QUAL, RID_CONST},
  {"case",  CASE, NORID},
  {"__complex__",  TYPESPEC, RID_COMPLEX},
  {"__iterator",  SCSPEC, RID_ITERATOR},
  {"bycopy",  TYPE_QUAL, RID_BYCOPY},
  {"",}, {"",}, {"",}, 
  {"__complex",  TYPESPEC, RID_COMPLEX},
  {"",}, 
  {"in",  TYPE_QUAL, RID_IN},
  {"break",  BREAK, NORID},
  {"@defs",  DEFS, NORID},
  {"",}, {"",}, {"",}, 
  {"extern",  SCSPEC, RID_EXTERN},
  {"if",  IF, NORID},
  {"typeof",  TYPEOF, NORID},
  {"typedef",  SCSPEC, RID_TYPEDEF},
  {"__typeof",  TYPEOF, NORID},
  {"sizeof",  SIZEOF, NORID},
  {"",}, 
  {"return",  RETURN, NORID},
  {"const",  TYPE_QUAL, RID_CONST},
  {"__volatile__",  TYPE_QUAL, RID_VOLATILE},
  {"@private",  PRIVATE, NORID},
  {"@selector",  SELECTOR, NORID},
  {"__volatile",  TYPE_QUAL, RID_VOLATILE},
  {"__asm__",  ASM_KEYWORD, NORID},
  {"",}, {"",}, 
  {"continue",  CONTINUE, NORID},
  {"__alignof__",  ALIGNOF, NORID},
  {"__imag",  IMAGPART, NORID},
  {"__attribute__",  ATTRIBUTE, NORID},
  {"",}, {"",}, 
  {"__attribute",  ATTRIBUTE, NORID},
  {"for",  FOR, NORID},
  {"",}, 
  {"@encode",  ENCODE, NORID},
  {"id",  OBJECTNAME, RID_ID},
  {"static",  SCSPEC, RID_STATIC},
  {"@interface",  INTERFACE, NORID},
  {"",}, 
  {"__signed",  TYPESPEC, RID_SIGNED},
  {"",}, 
  {"__label__",  LABEL, NORID},
  {"",}, {"",}, 
  {"__asm",  ASM_KEYWORD, NORID},
  {"char",  TYPESPEC, RID_CHAR},
  {"",}, 
  {"inline",  SCSPEC, RID_INLINE},
  {"out",  TYPE_QUAL, RID_OUT},
  {"register",  SCSPEC, RID_REGISTER},
  {"__real",  REALPART, NORID},
  {"short",  TYPESPEC, RID_SHORT},
  {"",}, 
  {"enum",  ENUM, NORID},
  {"inout",  TYPE_QUAL, RID_INOUT},
  {"",}, 
  {"oneway",  TYPE_QUAL, RID_ONEWAY},
  {"union",  UNION, NORID},
  {"",}, 
  {"__alignof",  ALIGNOF, NORID},
  {"",}, 
  {"@implementation",  IMPLEMENTATION, NORID},
  {"",}, 
  {"@class",  CLASS, NORID},
  {"",}, 
  {"@public",  PUBLIC, NORID},
  {"asm",  ASM_KEYWORD, NORID},
  {"",}, {"",}, {"",}, {"",}, {"",}, 
  {"default",  DEFAULT, NORID},
  {"",}, 
  {"void",  TYPESPEC, RID_VOID},
  {"",}, 
  {"@protected",  PROTECTED, NORID},
  {"@protocol",  PROTOCOL, NORID},
  {"",}, {"",}, {"",}, 
  {"volatile",  TYPE_QUAL, RID_VOLATILE},
  {"",}, {"",}, 
  {"signed",  TYPESPEC, RID_SIGNED},
  {"float",  TYPESPEC, RID_FLOAT},
  {"@end",  END, NORID},
  {"",}, {"",}, 
  {"unsigned",  TYPESPEC, RID_UNSIGNED},
  {"@compatibility_alias",  ALIAS, NORID},
  {"double",  TYPESPEC, RID_DOUBLE},
  {"",}, {"",}, 
  {"auto",  SCSPEC, RID_AUTO},
  {"",}, 
  {"goto",  GOTO, NORID},
  {"",}, {"",}, {"",}, {"",}, {"",}, {"",}, {"",}, {"",}, {"",}, 
  {"do",  DO, NORID},
  {"",}, {"",}, {"",}, {"",}, 
  {"long",  TYPESPEC, RID_LONG},
};

#ifdef __GNUC__
__inline
#endif
struct resword *
is_reserved_word (str, len)
     register char *str;
     register unsigned int len;
{
  if (len <= MAX_WORD_LENGTH && len >= MIN_WORD_LENGTH)
    {
      register int key = hash (str, len);

      if (key <= MAX_HASH_VALUE && key >= 0)
        {
          register char *s = wordlist[key].name;

          if (*s == *str && !strcmp (str + 1, s + 1))
            return &wordlist[key];
        }
    }
  return 0;
}