annotate trunk/src/Token.d @ 314:ebd21bbf296e

- Added Whitespace, Sheband and Hashline to enum TOK. TOK.Whitespace is a flag and tokens that are considered whitespace are flagged as such. - Added method isWhitespace() to Token. Adapted parser accordingly.
author aziz
date Wed, 15 Aug 2007 19:57:01 +0000
parents fa0b6f32c1ae
children 6259fb93e3dd
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
0
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1 /++
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2 Author: Aziz Köksal
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3 License: GPL3
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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
314
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15 enum TOK : ushort
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16 {
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17 Invalid,
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18
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19 /// Flag for whitespace tokens that must be ignored in the parsing phase.
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20 Whitespace = 0x8000,
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21 Comment = 1 | Whitespace,
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22 Shebang = 2 | Whitespace,
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23 HashLine = 3 | Whitespace,
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24
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25 Identifier = 4,
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5d6968cc751e - Parsing string and character literals now (rudimentary implementation.)
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26 String,
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27 Special,
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fc645fb2fe72 - scanEscapeSequences() doesn't return 0xFFFF as an error value anymore, because it is a valid codepoint usable by the user.
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28 CharLiteral, WCharLiteral, DCharLiteral,
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29
50bb7fc9db44 - The types of integers are recognized now.
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30 // Numbers
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31 Int32, Int64, Uint32, Uint64,
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32 // Floating point number scanner relies on this order. (FloatXY + 3 == ImaginaryXY)
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33 Float32, Float64, Float80,
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34 Imaginary32, Imaginary64, Imaginary80,
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35
36
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36
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37 // Brackets
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38 LParen,
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39 RParen,
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40 LBracket,
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41 RBracket,
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42 LBrace,
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43 RBrace,
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44
22
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45 Dot, Slice, Ellipses,
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46
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ce636f3981cc - Removed TOK.Number.
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47 // Floating point number operators
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48 Unordered,
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49 UorE,
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50 UorG,
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51 UorGorE,
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52 UorL,
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53 UorLorE,
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54 LorEorG,
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55 LorG,
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56
36
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57 // Normal operators
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58 Assign, Equal, NotEqual, Not,
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59 LessEqual, Less,
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60 GreaterEqual, Greater,
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61 LShiftAssign, LShift,
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62 RShiftAssign,RShift,
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63 URShiftAssign, URShift,
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64 OrAssign, OrLogical, OrBinary,
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903f91163f23 - Added code for parsing AndAssign, AndLogical and AndBinary tokens.
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65 AndAssign, AndLogical, AndBinary,
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66 PlusAssign, PlusPlus, Plus,
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67 MinusAssign, MinusMinus, Minus,
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68 DivAssign, Div,
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69 MulAssign, Mul,
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70 ModAssign, Mod,
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71 XorAssign, Xor,
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72 CatAssign, Catenate,
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73 Tilde,
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74 Identity, NotIdentity,
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75
21
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76 Colon,
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77 Semicolon,
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78 Question,
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79 Comma,
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80 Dollar,
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81
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82 /* Keywords:
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83 NB.: Token.isKeyword() depends on this list being contiguous.
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84 */
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85 Abstract,Alias,Align,Asm,Assert,Auto,Body,
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86 Bool,Break,Byte,Case,Cast,Catch,Cdouble,
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87 Cent,Cfloat,Char,Class,Const,Continue,Creal,
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88 Dchar,Debug,Default,Delegate,Delete,Deprecated,Do,
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89 Double,Else,Enum,Export,Extern,False,Final,
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90 Finally,Float,For,Foreach,Foreach_reverse,Function,Goto,
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91 Idouble,If,Ifloat,Import,In,Inout,Int,
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92 Interface,Invariant,Ireal,Is,Lazy,Long,Macro/+D2.0+/,
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93 Mixin,Module,New,Null,Out,Override,Package,
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94 Pragma,Private,Protected,Public,Real,Ref/+D2.0+/,Return,
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95 Scope,Short,Static,Struct,Super,Switch,Synchronized,
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96 Template,This,Throw,Traits/+D2.0+/,True,Try,Typedef,Typeid,
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97 Typeof,Ubyte,Ucent,Uint,Ulong,Union,Unittest,
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98 Ushort,Version,Void,Volatile,Wchar,While,With,
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99
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100 HEAD, // start of linked list
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101 EOF
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102 }
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103
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104 alias TOK.Abstract KeywordsBegin;
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105 alias TOK.With KeywordsEnd;
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106
0
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107 struct Token
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108 {
3
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109 TOK type;
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110 // Position pos;
0
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111
239
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112 Token* next, prev;
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113
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114 char* start;
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115 char* end;
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116
0
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117 union
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118 {
31
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119 struct
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120 {
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121 string str;
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122 char pf;
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123 }
62
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124 dchar dchar_;
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125 long long_;
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126 ulong ulong_;
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127 int int_;
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128 uint uint_;
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129 float float_;
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130 double double_;
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131 real real_;
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132 }
28
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133
107
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134 alias srcText identifier;
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135
65
6c21ae79fbb3 - Renamed function Token.span to Token.srcText.
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136 string srcText()
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137 {
30
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138 assert(start && end);
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139 return start[0 .. end - start];
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140 }
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141
210
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142 static string toString(TOK tok)
208
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143 {
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144 return tokToString[tok];
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145 }
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146
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147 bool isKeyword()
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148 {
163
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149 return KeywordsBegin <= type && type <= KeywordsEnd;
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150 }
208
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151
314
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152 bool isWhitespace()
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153 {
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154 return !!(type & TOK.Whitespace);
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155 }
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156
163
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157 int opEquals(TOK type2)
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158 {
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159 return type == type2;
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160 }
239
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161
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162 new(size_t size)
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163 {
7911f6a92e6e - Added 'new' and 'delete' declarations to Token and uncommented next and prev members. Added HEAD to TOK.
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164 void* p = malloc(size);
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165 if (p is null)
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166 throw new OutOfMemoryException();
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167 *cast(Token*)p = Token.init;
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168 return p;
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169 }
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170
7911f6a92e6e - Added 'new' and 'delete' declarations to Token and uncommented next and prev members. Added HEAD to TOK.
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171 delete(void* p)
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172 {
7911f6a92e6e - Added 'new' and 'delete' declarations to Token and uncommented next and prev members. Added HEAD to TOK.
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173 free(p);
7911f6a92e6e - Added 'new' and 'delete' declarations to Token and uncommented next and prev members. Added HEAD to TOK.
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174 }
208
0a9bccf74046 - Added string table and toString() method to Token.
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175 }
0a9bccf74046 - Added string table and toString() method to Token.
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176
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177 string[] tokToString = [
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178 "Invalid",
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179
314
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180 "Comment",
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181 "#! /shebang/",
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182 "#line",
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183
208
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184 "Identifier",
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185 "String",
312
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186 "Special",
208
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187 "CharLiteral", "WCharLiteral", "DCharLiteral",
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188
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189 "Int32", "Int64", "Uint32", "Uint64",
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190 "Float32", "Float64", "Float80",
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191 "Imaginary32", "Imaginary64", "Imaginary80",
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192
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diff changeset
193 "(",
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194 ")",
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195 "[",
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196 "]",
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diff changeset
197 "{",
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198 "}",
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diff changeset
199
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diff changeset
200 ".", "..", "...",
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201
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parents: 163
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202 "Unordered",
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203 "UorE",
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204 "UorG",
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diff changeset
205 "UorGorE",
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parents: 163
diff changeset
206 "UorL",
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parents: 163
diff changeset
207 "UorLorE",
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diff changeset
208 "LorEorG",
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diff changeset
209 "LorG",
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parents: 163
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210
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parents: 163
diff changeset
211 "=", "==", "!=", "!",
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parents: 163
diff changeset
212 "<=", "<",
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diff changeset
213 ">=", ">",
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diff changeset
214 "<<=", "<<",
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diff changeset
215 ">>=",">>",
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diff changeset
216 ">>>=", ">>>",
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diff changeset
217 "|=", "||", "|",
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diff changeset
218 "&=", "&&", "&",
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parents: 163
diff changeset
219 "+=", "++", "+",
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parents: 163
diff changeset
220 "-=", "--", "-",
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parents: 163
diff changeset
221 "/=", "/",
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diff changeset
222 "*=", "*",
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diff changeset
223 "%=", "%",
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parents: 163
diff changeset
224 "^=", "^",
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parents: 163
diff changeset
225 "~=", "~",
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parents: 163
diff changeset
226 "~",
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parents: 163
diff changeset
227 "is", "!is",
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parents: 163
diff changeset
228
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diff changeset
229 ":",
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parents: 163
diff changeset
230 ";",
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parents: 163
diff changeset
231 "?",
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parents: 163
diff changeset
232 ",",
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parents: 163
diff changeset
233 "$",
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parents: 163
diff changeset
234
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parents: 163
diff changeset
235 "abstract","alias","align","asm","assert","auto","body",
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parents: 163
diff changeset
236 "bool","break","byte","case","cast","catch","cdouble",
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parents: 163
diff changeset
237 "cent","cfloat","char","class","const","continue","creal",
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parents: 163
diff changeset
238 "dchar","debug","default","delegate","delete","deprecated","do",
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parents: 163
diff changeset
239 "double","else","enum","export","extern","false","final",
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parents: 163
diff changeset
240 "finally","float","for","foreach","foreach_reverse","function","goto",
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parents: 163
diff changeset
241 "idouble","if","ifloat","import","in","inout","int",
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parents: 163
diff changeset
242 "interface","invariant","ireal","is","lazy","long","macro",
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parents: 163
diff changeset
243 "mixin","module","new","null","out","override","package",
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parents: 163
diff changeset
244 "pragma","private","protected","public","real","ref","return",
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parents: 163
diff changeset
245 "scope","short","static","struct","super","switch","synchronized",
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parents: 163
diff changeset
246 "template","this","throw","true","try","typedef","typeid",
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parents: 163
diff changeset
247 "typeof","ubyte","ucent","uint","ulong","union","unittest",
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parents: 163
diff changeset
248 "ushort","version","void","volatile","wchar","while","with",
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parents: 163
diff changeset
249
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diff changeset
250 "EOF"
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diff changeset
251 ];