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annotate trunk/src/Token.d @ 28:3a9daccf7d96

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- Added table for identifiers to Lexer. - Added keywords table. - Added keywords to TOK.
author aziz
date Sun, 24 Jun 2007 17:19:03 +0000
parents 43b6bf56f0e9
children ef83eea26bbd
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0
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1 /++
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2 Author: Aziz Köksal
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3 License: GPL2
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4 +/
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5 module Token;
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6
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7 struct Position
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8 {
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9 size_t loc;
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10 size_t col;
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11 }
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12
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13 enum TOK
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14 {
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15 Identifier,
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16 Comment,
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17 String,
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18 Character,
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19 DivisionAssign,
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20 Number,
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21 /* Braces */
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22 LParen,
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23 RParen,
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24 LBracket,
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25 RBracket,
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26 LBrace,
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27 RBrace,
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28
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29 Dot, Slice, Ellipses,
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30
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31 Assign, Equal,
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32 OrAssign, OrLogical, OrBinary,
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33 AndAssign, AndLogical, AndBinary,
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34 PlusAssign, PlusPlus, Plus,
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35 MinusAssign, MinusMinus, Minus,
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36 CatAssign, Catenate,
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37
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38 Tilde,
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39 Colon,
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40 Semicolon,
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41 Question,
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42 Comma,
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43 Dollar,
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44
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45 /* Keywords:
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46 NB.: Token.isKeyword() depends on this list being contiguous.
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47 */
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48 Abstract,Alias,Align,Asm,Assert,Auto,Body,
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49 Bool,Break,Byte,Case,Cast,Catch,Cdouble,
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50 Cent,Cfloat,Char,Class,Const,Continue,Creal,
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51 Dchar,Debug,Default,Delegate,Delete,Deprecated,Do,
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52 Double,Else,Enum,Export,Extern,False,Final,
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53 Finally,Float,For,Foreach,Foreach_reverse,Function,Goto,
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54 Idouble,If,Ifloat,Import,In,Inout,Int,
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55 Interface,Invariant,Ireal,Is,Lazy,Long,Macro,
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56 Mixin,Module,New,Null,Out,Override,Package,
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57 Pragma,Private,Protected,Public,Real,Ref,Return,
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58 Scope,Short,Static,Struct,Super,Switch,Synchronized,
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59 Template,This,Throw,True,Try,Typedef,Typeid,
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60 Typeof,Ubyte,Ucent,Uint,Ulong,Union,Unittest,
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61 Ushort,Version,Void,Volatile,Wchar,While,With,
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62
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63 EOF
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64 }
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65
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66 alias TOK.Abstract KeywordsBegin;
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67 alias TOK.With KeywordsEnd;
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68
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69 struct Token
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70 {
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71 TOK type;
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72 Position pos;
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73
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74 char* start;
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75 char* end;
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76
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77 union
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78 {
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79 char[] str;
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80 dchar chr;
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81 float f;
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82 double d;
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83 }
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84
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85 string span()
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86 {
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87 return start[0 .. end - start];
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88 }
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89
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90 bool isKeyword()
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91 {
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92 if (KeywordsBegin <= type && type <= KeywordsEnd)
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93 return true;
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94 return false;
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95 }
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96 }