annotate trunk/src/Token.d @ 239:7911f6a92e6e

- Added 'new' and 'delete' declarations to Token and uncommented next and prev members. Added HEAD to TOK. - Tokens are stored in a doubly linked list by the Lexer now. - Added method scanNext() which can be used by peek() and nextToken(). - Saving 'token' in Parser.try_().
author aziz
date Mon, 30 Jul 2007 12:36:04 +0000
parents b7bde6583d3e
children 32d354584b28
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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 import std.c.stdlib : malloc, free;
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7 import std.outofmemory;
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8
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9 struct Position
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10 {
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11 size_t loc;
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12 size_t col;
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13 }
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14
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15 enum TOK
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16 {
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17 Invalid,
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18
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19 Identifier,
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20 Comment,
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21 String,
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22 CharLiteral, WCharLiteral, DCharLiteral,
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23
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24 // Numbers
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25 Int32, Int64, Uint32, Uint64,
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26 // Floating point number scanner relies on this order. (FloatXY + 3 == ImaginaryXY)
62
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27 Float32, Float64, Float80,
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28 Imaginary32, Imaginary64, Imaginary80,
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29
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30
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31 // Brackets
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32 LParen,
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33 RParen,
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34 LBracket,
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35 RBracket,
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36 LBrace,
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37 RBrace,
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38
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39 Dot, Slice, Ellipses,
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40
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41 // Floating point number operators
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42 Unordered,
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43 UorE,
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44 UorG,
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45 UorGorE,
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46 UorL,
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47 UorLorE,
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48 LorEorG,
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49 LorG,
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50
36
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51 // Normal operators
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52 Assign, Equal, NotEqual, Not,
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53 LessEqual, Less,
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54 GreaterEqual, Greater,
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55 LShiftAssign, LShift,
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56 RShiftAssign,RShift,
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57 URShiftAssign, URShift,
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58 OrAssign, OrLogical, OrBinary,
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59 AndAssign, AndLogical, AndBinary,
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60 PlusAssign, PlusPlus, Plus,
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61 MinusAssign, MinusMinus, Minus,
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62 DivAssign, Div,
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63 MulAssign, Mul,
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64 ModAssign, Mod,
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65 XorAssign, Xor,
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66 CatAssign, Catenate,
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67 Tilde,
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68 Identity, NotIdentity,
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69
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70 Colon,
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71 Semicolon,
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72 Question,
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73 Comma,
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74 Dollar,
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75
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76 /* Keywords:
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77 NB.: Token.isKeyword() depends on this list being contiguous.
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78 */
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79 Abstract,Alias,Align,Asm,Assert,Auto,Body,
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80 Bool,Break,Byte,Case,Cast,Catch,Cdouble,
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81 Cent,Cfloat,Char,Class,Const,Continue,Creal,
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82 Dchar,Debug,Default,Delegate,Delete,Deprecated,Do,
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83 Double,Else,Enum,Export,Extern,False,Final,
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84 Finally,Float,For,Foreach,Foreach_reverse,Function,Goto,
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85 Idouble,If,Ifloat,Import,In,Inout,Int,
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86 Interface,Invariant,Ireal,Is,Lazy,Long,Macro,
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87 Mixin,Module,New,Null,Out,Override,Package,
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88 Pragma,Private,Protected,Public,Real,Ref,Return,
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89 Scope,Short,Static,Struct,Super,Switch,Synchronized,
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90 Template,This,Throw,True,Try,Typedef,Typeid,
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91 Typeof,Ubyte,Ucent,Uint,Ulong,Union,Unittest,
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92 Ushort,Version,Void,Volatile,Wchar,While,With,
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93
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94 HEAD, // start of linked list
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95 EOF
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96 }
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97
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98 alias TOK.Abstract KeywordsBegin;
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99 alias TOK.With KeywordsEnd;
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100
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101 struct Token
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102 {
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103 TOK type;
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104 // Position pos;
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105
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106 Token* next, prev;
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107
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108 char* start;
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109 char* end;
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110
0
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111 union
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112 {
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113 struct
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114 {
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115 string str;
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116 char pf;
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117 }
62
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118 dchar dchar_;
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119 long long_;
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120 ulong ulong_;
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121 int int_;
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122 uint uint_;
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123 float float_;
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124 double double_;
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125 real real_;
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126 }
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127
107
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128 alias srcText identifier;
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129
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130 string srcText()
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131 {
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132 assert(start && end);
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133 return start[0 .. end - start];
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134 }
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135
210
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136 static string toString(TOK tok)
208
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137 {
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138 return tokToString[tok];
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139 }
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140
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141 bool isKeyword()
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142 {
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143 return KeywordsBegin <= type && type <= KeywordsEnd;
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144 }
208
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145
163
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146 int opEquals(TOK type2)
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147 {
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148 return type == type2;
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149 }
239
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150
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151 new(size_t size)
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152 {
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153 void* p = malloc(size);
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154 if (p is null)
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155 throw new OutOfMemoryException();
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156 *cast(Token*)p = Token.init;
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157 return p;
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158 }
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159
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160 delete(void* p)
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161 {
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162 free(p);
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163 }
208
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164 }
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165
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166 string[] tokToString = [
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167 "Invalid",
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diff changeset
168
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
169 "Identifier",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
170 "Comment",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
171 "String",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
172 "CharLiteral", "WCharLiteral", "DCharLiteral",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
173
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
174 "Int32", "Int64", "Uint32", "Uint64",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
175 "Float32", "Float64", "Float80",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
176 "Imaginary32", "Imaginary64", "Imaginary80",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
177
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
178 "(",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
179 ")",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
180 "[",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
181 "]",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
182 "{",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
183 "}",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
184
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
185 ".", "..", "...",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
186
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
187 "Unordered",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
188 "UorE",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
189 "UorG",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
190 "UorGorE",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
191 "UorL",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
192 "UorLorE",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
193 "LorEorG",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
194 "LorG",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
195
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
196 "=", "==", "!=", "!",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
197 "<=", "<",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
198 ">=", ">",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
199 "<<=", "<<",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
200 ">>=",">>",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
201 ">>>=", ">>>",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
202 "|=", "||", "|",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
203 "&=", "&&", "&",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
204 "+=", "++", "+",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
205 "-=", "--", "-",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
206 "/=", "/",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
207 "*=", "*",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
208 "%=", "%",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
209 "^=", "^",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
210 "~=", "~",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
211 "~",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
212 "is", "!is",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
213
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
214 ":",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
215 ";",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
216 "?",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
217 ",",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
218 "$",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
219
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
220 "abstract","alias","align","asm","assert","auto","body",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
221 "bool","break","byte","case","cast","catch","cdouble",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
222 "cent","cfloat","char","class","const","continue","creal",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
223 "dchar","debug","default","delegate","delete","deprecated","do",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
224 "double","else","enum","export","extern","false","final",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
225 "finally","float","for","foreach","foreach_reverse","function","goto",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
226 "idouble","if","ifloat","import","in","inout","int",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
227 "interface","invariant","ireal","is","lazy","long","macro",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
228 "mixin","module","new","null","out","override","package",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
229 "pragma","private","protected","public","real","ref","return",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
230 "scope","short","static","struct","super","switch","synchronized",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
231 "template","this","throw","true","try","typedef","typeid",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
232 "typeof","ubyte","ucent","uint","ulong","union","unittest",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
233 "ushort","version","void","volatile","wchar","while","with",
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
234
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
235 "EOF"
0a9bccf74046 - Added string table and toString() method to Token.
aziz
parents: 163
diff changeset
236 ];