dmd2/identifier.c

   1
   2 // Compiler implementation of the D programming language
   3 // Copyright (c) 1999-2006 by Digital Mars
   4 // All Rights Reserved
   5 // written by Walter Bright
   6 // http://www.digitalmars.com
   7 // License for redistribution is by either the Artistic License
   8 // in artistic.txt, or the GNU General Public License in gnu.txt.
   9 // See the included readme.txt for details.
  10
  11 /* NOTE: This file has been patched from the original DMD distribution to
  12    work with the GDC compiler.
  13
  14    Modified by David Friedman, May 2005
  15 */
  16
  17 #include <stdio.h>
  18 #include <string.h>
  19
  20 #include "root.h"
  21 #include "identifier.h"
  22 #include "mars.h"
  23 #include "lexer.h"
  24 #include "id.h"
  25
  26 Identifier::Identifier(const char *string, int value)
  27 {
  28     //printf("Identifier('%s', %d)\n", string, value);
  29     this->string = string;
  30     this->value = value;
  31     this->len = strlen(string);
  32 }
  33
  34 hash_t Identifier::hashCode()
  35 {
  36     return String::calcHash(string);
  37 }
  38
  39 int Identifier::equals(Object *o)
  40 {
  41     return this == o || memcmp(string,o->toChars(),len+1) == 0;
  42 }
  43
  44 int Identifier::compare(Object *o)
  45 {
  46     return memcmp(string, o->toChars(), len + 1);
  47 }
  48
  49 char *Identifier::toChars()
  50 {
  51     return (char *)string;
  52 }
  53
  54 char *Identifier::toHChars2()
  55 {
  56     char *p = NULL;
  57
  58     if (this == Id::ctor) p = "this";
  59     else if (this == Id::dtor) p = "~this";
  60     else if (this == Id::classInvariant) p = "invariant";
  61     else if (this == Id::unitTest) p = "unittest";
  62     else if (this == Id::dollar) p = "$";
  63     else if (this == Id::withSym) p = "with";
  64     else if (this == Id::result) p = "result";
  65     else if (this == Id::returnLabel) p = "return";
  66     else
  67     {   p = toChars();
  68         if (*p == '_')
  69         {
  70             if (memcmp(p, "_staticCtor", 11) == 0)
  71                 p = "static this";
  72             else if (memcmp(p, "_staticDtor", 11) == 0)
  73                 p = "static ~this";
  74         }
  75     }
  76
  77     return p;
  78 }
  79
  80 void Identifier::print()
  81 {
  82     fprintf(stdmsg, "%s",string);
  83 }
  84
  85 int Identifier::dyncast()
  86 {
  87     return DYNCAST_IDENTIFIER;
  88 }
  89
  90 Identifier *Identifier::generateId(char *prefix)
  91 {   OutBuffer buf;
  92     char *id;
  93     static unsigned i;
  94
  95     buf.writestring(prefix);
  96     buf.printf("%u", ++i);
  97
  98     id = buf.toChars();
  99     buf.data = NULL;
 100     return new Identifier(id, TOKidentifier);
 101 }