Mercurial > projects > dil
annotate trunk/src/dil/Token.d @ 326:4a7359b88c11
- Added package 'dil' to module declarations.
author | aziz |
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date | Tue, 21 Aug 2007 16:35:04 +0000 |
parents | 540ec3753263 |
children | 95f1b6e43214 |
rev | line source |
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0 | 1 /++ |
2 Author: Aziz Köksal | |
249 | 3 License: GPL3 |
0 | 4 +/ |
326 | 5 module dil.Token; |
239
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6 import std.c.stdlib : malloc, free; |
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7 import std.outofmemory; |
0 | 8 |
9 struct Position | |
10 { | |
11 size_t loc; | |
12 size_t col; | |
13 } | |
14 | |
314
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15 enum TOK : ushort |
3 | 16 { |
95 | 17 Invalid, |
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, |
323 | 24 Filespec = 4 | Whitespace, |
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25 |
323 | 26 Identifier = 5, |
9
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27 String, |
312 | 28 Special, |
82
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29 CharLiteral, WCharLiteral, DCharLiteral, |
58 | 30 |
31 // Numbers | |
32 Int32, Int64, Uint32, Uint64, | |
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33 // Floating point number scanner relies on this order. (FloatXY + 3 == ImaginaryXY) |
62
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34 Float32, Float64, Float80, |
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35 Imaginary32, Imaginary64, Imaginary80, |
58 | 36 |
36
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37 |
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38 // Brackets |
20 | 39 LParen, |
40 RParen, | |
41 LBracket, | |
42 RBracket, | |
43 LBrace, | |
44 RBrace, | |
21
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45 |
22
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46 Dot, Slice, Ellipses, |
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47 |
131 | 48 // Floating point number operators |
35
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49 Unordered, |
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50 UorE, |
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51 UorG, |
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52 UorGorE, |
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53 UorL, |
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54 UorLorE, |
36
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55 LorEorG, |
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56 LorG, |
35
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57 |
36
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58 // Normal operators |
35
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59 Assign, Equal, NotEqual, Not, |
38
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60 LessEqual, Less, |
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61 GreaterEqual, Greater, |
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62 LShiftAssign, LShift, |
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63 RShiftAssign,RShift, |
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64 URShiftAssign, URShift, |
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65 OrAssign, OrLogical, OrBinary, |
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66 AndAssign, AndLogical, AndBinary, |
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67 PlusAssign, PlusPlus, Plus, |
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68 MinusAssign, MinusMinus, Minus, |
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69 DivAssign, Div, |
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70 MulAssign, Mul, |
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71 ModAssign, Mod, |
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72 XorAssign, Xor, |
27 | 73 CatAssign, Catenate, |
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74 Tilde, |
71 | 75 Identity, NotIdentity, |
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76 |
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77 Colon, |
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78 Semicolon, |
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79 Question, |
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80 Comma, |
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81 Dollar, |
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82 |
28 | 83 /* Keywords: |
84 NB.: Token.isKeyword() depends on this list being contiguous. | |
85 */ | |
86 Abstract,Alias,Align,Asm,Assert,Auto,Body, | |
87 Bool,Break,Byte,Case,Cast,Catch,Cdouble, | |
88 Cent,Cfloat,Char,Class,Const,Continue,Creal, | |
89 Dchar,Debug,Default,Delegate,Delete,Deprecated,Do, | |
90 Double,Else,Enum,Export,Extern,False,Final, | |
91 Finally,Float,For,Foreach,Foreach_reverse,Function,Goto, | |
92 Idouble,If,Ifloat,Import,In,Inout,Int, | |
269 | 93 Interface,Invariant,Ireal,Is,Lazy,Long,Macro/+D2.0+/, |
28 | 94 Mixin,Module,New,Null,Out,Override,Package, |
269 | 95 Pragma,Private,Protected,Public,Real,Ref/+D2.0+/,Return, |
28 | 96 Scope,Short,Static,Struct,Super,Switch,Synchronized, |
269 | 97 Template,This,Throw,Traits/+D2.0+/,True,Try,Typedef,Typeid, |
28 | 98 Typeof,Ubyte,Ucent,Uint,Ulong,Union,Unittest, |
99 Ushort,Version,Void,Volatile,Wchar,While,With, | |
100 | |
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101 HEAD, // start of linked list |
4 | 102 EOF |
3 | 103 } |
104 | |
28 | 105 alias TOK.Abstract KeywordsBegin; |
106 alias TOK.With KeywordsEnd; | |
107 | |
0 | 108 struct Token |
109 { | |
3 | 110 TOK type; |
84
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111 // Position pos; |
0 | 112 |
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113 Token* next, prev; |
131 | 114 |
4 | 115 char* start; |
116 char* end; | |
117 | |
0 | 118 union |
119 { | |
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120 struct |
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121 { |
323 | 122 Token* line_num; // #line number |
123 Token* line_filespec; // #line number filespec | |
124 } | |
125 struct | |
126 { | |
31
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127 string str; |
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128 char pf; |
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129 } |
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130 dchar dchar_; |
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131 long long_; |
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132 ulong ulong_; |
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133 int int_; |
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134 uint uint_; |
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135 float float_; |
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136 double double_; |
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137 real real_; |
0 | 138 } |
28 | 139 |
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140 alias srcText identifier; |
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141 |
65 | 142 string srcText() |
28 | 143 { |
30 | 144 assert(start && end); |
28 | 145 return start[0 .. end - start]; |
146 } | |
147 | |
210 | 148 static string toString(TOK tok) |
208 | 149 { |
150 return tokToString[tok]; | |
151 } | |
152 | |
28 | 153 bool isKeyword() |
154 { | |
163
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155 return KeywordsBegin <= type && type <= KeywordsEnd; |
28 | 156 } |
208 | 157 |
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158 bool isWhitespace() |
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159 { |
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160 return !!(type & TOK.Whitespace); |
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161 } |
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162 |
163
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163 int opEquals(TOK type2) |
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164 { |
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165 return type == type2; |
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166 } |
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167 |
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168 new(size_t size) |
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169 { |
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170 void* p = malloc(size); |
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171 if (p is null) |
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172 throw new OutOfMemoryException(); |
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173 *cast(Token*)p = Token.init; |
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174 return p; |
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175 } |
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176 |
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177 delete(void* p) |
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178 { |
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179 free(p); |
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180 } |
208 | 181 } |
182 | |
183 string[] tokToString = [ | |
184 "Invalid", | |
185 | |
314
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186 "Comment", |
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187 "#! /shebang/", |
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188 "#line", |
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189 |
208 | 190 "Identifier", |
191 "String", | |
312 | 192 "Special", |
208 | 193 "CharLiteral", "WCharLiteral", "DCharLiteral", |
194 | |
195 "Int32", "Int64", "Uint32", "Uint64", | |
196 "Float32", "Float64", "Float80", | |
197 "Imaginary32", "Imaginary64", "Imaginary80", | |
198 | |
199 "(", | |
200 ")", | |
201 "[", | |
202 "]", | |
203 "{", | |
204 "}", | |
205 | |
206 ".", "..", "...", | |
207 | |
208 "Unordered", | |
209 "UorE", | |
210 "UorG", | |
211 "UorGorE", | |
212 "UorL", | |
213 "UorLorE", | |
214 "LorEorG", | |
215 "LorG", | |
216 | |
217 "=", "==", "!=", "!", | |
218 "<=", "<", | |
219 ">=", ">", | |
220 "<<=", "<<", | |
221 ">>=",">>", | |
222 ">>>=", ">>>", | |
223 "|=", "||", "|", | |
224 "&=", "&&", "&", | |
225 "+=", "++", "+", | |
226 "-=", "--", "-", | |
227 "/=", "/", | |
228 "*=", "*", | |
229 "%=", "%", | |
230 "^=", "^", | |
231 "~=", "~", | |
232 "~", | |
233 "is", "!is", | |
234 | |
235 ":", | |
236 ";", | |
237 "?", | |
238 ",", | |
239 "$", | |
240 | |
241 "abstract","alias","align","asm","assert","auto","body", | |
242 "bool","break","byte","case","cast","catch","cdouble", | |
243 "cent","cfloat","char","class","const","continue","creal", | |
244 "dchar","debug","default","delegate","delete","deprecated","do", | |
245 "double","else","enum","export","extern","false","final", | |
246 "finally","float","for","foreach","foreach_reverse","function","goto", | |
247 "idouble","if","ifloat","import","in","inout","int", | |
248 "interface","invariant","ireal","is","lazy","long","macro", | |
249 "mixin","module","new","null","out","override","package", | |
250 "pragma","private","protected","public","real","ref","return", | |
251 "scope","short","static","struct","super","switch","synchronized", | |
252 "template","this","throw","true","try","typedef","typeid", | |
253 "typeof","ubyte","ucent","uint","ulong","union","unittest", | |
254 "ushort","version","void","volatile","wchar","while","with", | |
255 | |
256 "EOF" | |
257 ]; |