Mercurial Hosting > luan
annotate src/luan/interp/LuaParser.java @ 21:c93d8c781853
add functions
git-svn-id: https://luan-java.googlecode.com/svn/trunk@22 21e917c8-12df-6dd8-5cb6-c86387c605b9
author | fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9> |
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date | Tue, 04 Dec 2012 09:16:03 +0000 |
parents | d85510d92eee |
children | 7ee247560db5 |
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1 package luan.interp; |
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2 |
12
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3 import java.util.Set; |
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4 import java.util.HashSet; |
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5 import java.util.Arrays; |
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6 import java.util.List; |
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7 import java.util.ArrayList; |
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8 import java.util.Scanner; |
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9 import org.parboiled.BaseParser; |
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10 import org.parboiled.Parboiled; |
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11 import org.parboiled.Rule; |
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12 import org.parboiled.parserunners.ReportingParseRunner; |
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13 import org.parboiled.support.ParsingResult; |
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14 import org.parboiled.support.Var; |
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15 import org.parboiled.support.StringVar; |
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16 import org.parboiled.support.StringBuilderVar; |
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17 import org.parboiled.support.ValueStack; |
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18 import org.parboiled.errors.ErrorUtils; |
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19 import luan.Lua; |
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20 import luan.LuaNumber; |
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21 import luan.LuaState; |
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22 |
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23 |
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24 public class LuaParser extends BaseParser<Object> { |
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25 |
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26 static final class Frame { |
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27 final Frame parent; |
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28 final List<String> symbols = new ArrayList<String>(); |
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29 int stackSize = 0; |
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30 int loops = 0; |
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31 |
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32 Frame(Frame parent) { |
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33 this.parent = parent; |
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34 } |
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35 } |
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36 |
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37 int nEquals; |
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38 int parens = 0; |
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39 Frame frame = new Frame(null); |
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40 |
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41 boolean nEquals(int n) { |
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42 nEquals = n; |
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43 return true; |
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44 } |
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45 |
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46 boolean incParens() { |
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47 parens++; |
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48 return true; |
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49 } |
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50 |
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51 boolean decParens() { |
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52 parens--; |
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53 return true; |
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54 } |
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55 |
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56 List<String> symbols() { |
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57 return frame.symbols; |
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58 } |
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59 |
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60 int symbolsSize() { |
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61 return frame.symbols.size(); |
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62 } |
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63 |
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64 boolean addSymbol(String name) { |
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65 frame.symbols.add(name); |
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66 if( frame.stackSize < symbolsSize() ) |
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67 frame.stackSize = symbolsSize(); |
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68 return true; |
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69 } |
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70 |
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71 int index(String name) { |
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72 List<String> symbols = frame.symbols; |
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73 int i = symbols.size(); |
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74 while( --i >= 0 ) { |
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75 if( symbols.get(i).equals(name) ) |
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76 return i; |
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77 } |
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78 return -1; |
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79 } |
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80 |
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81 boolean popSymbols(int n) { |
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82 List<String> symbols = frame.symbols; |
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83 while( n-- > 0 ) { |
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84 symbols.remove(symbols.size()-1); |
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85 } |
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86 return true; |
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87 } |
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88 |
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89 boolean incLoops() { |
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90 frame.loops++; |
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91 return true; |
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92 } |
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93 |
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94 boolean decLoops() { |
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95 frame.loops--; |
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96 return true; |
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97 } |
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98 |
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99 |
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100 public Rule Target() { |
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101 return Sequence( |
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102 Spaces(), |
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103 FirstOf( |
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104 Sequence( ExpList(), EOI ), |
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105 Sequence( |
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106 Block(), |
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107 EOI, |
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108 push( new Chunk( (Stmt)pop(), frame.stackSize, 0 ) ) |
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109 ) |
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110 ) |
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111 ); |
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112 } |
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113 |
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114 Rule Block() { |
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115 Var<List<Stmt>> stmts = new Var<List<Stmt>>(new ArrayList<Stmt>()); |
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116 Var<Integer> stackStart = new Var<Integer>(symbolsSize()); |
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117 return Sequence( |
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118 Optional( Stmt(stmts) ), |
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119 ZeroOrMore( |
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120 StmtSep(), |
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121 Optional( Stmt(stmts) ) |
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122 ), |
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123 push( newBlock(stmts.get(),stackStart.get()) ) |
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124 ); |
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125 } |
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126 |
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127 Stmt newBlock(List<Stmt> stmts,int stackStart) { |
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128 int stackEnd = symbolsSize(); |
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129 popSymbols( stackEnd - stackStart ); |
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130 if( stmts.isEmpty() ) |
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131 return Stmt.EMPTY; |
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132 if( stmts.size()==1 && stackStart==stackEnd ) |
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133 return stmts.get(0); |
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134 return new Block( stmts.toArray(new Stmt[0]), stackStart, stackEnd ); |
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135 } |
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136 |
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137 Rule StmtSep() { |
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138 return Sequence( |
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139 FirstOf( |
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140 ';', |
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141 Sequence( |
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142 Optional( "--", ZeroOrMore(NoneOf("\r\n")) ), |
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143 EndOfLine() |
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144 ) |
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145 ), |
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146 Spaces() |
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147 ); |
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148 } |
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149 |
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150 Rule EndOfLine() { |
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151 return FirstOf("\r\n", '\r', '\n'); |
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152 } |
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153 |
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154 Rule Stmt(Var<List<Stmt>> stmts) { |
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155 return FirstOf( |
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156 LocalStmt(stmts), |
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157 Sequence( |
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158 FirstOf( |
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159 ReturnStmt(), |
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160 FunctionStmt(), |
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161 LocalFunctionStmt(), |
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162 BreakStmt(), |
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163 GenericForStmt(), |
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164 NumericForStmt(), |
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165 DoStmt(), |
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166 WhileStmt(), |
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167 RepeatStmt(), |
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168 IfStmt(), |
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169 SetStmt(), |
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170 ExpressionsStmt() |
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171 ), |
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172 stmts.get().add( (Stmt)pop() ) |
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173 ) |
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174 ); |
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175 } |
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176 |
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177 Rule ReturnStmt() { |
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178 return Sequence( |
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179 Keyword("return"), Expressions(), |
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180 push( new ReturnStmt( (Expressions)pop() ) ) |
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181 ); |
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182 } |
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183 |
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184 Rule FunctionStmt() { |
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185 return Sequence( |
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186 Keyword("function"), FnName(), Function(), |
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187 push( new SetStmt( (Settable)pop(1), expr(pop()) ) ) |
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188 ); |
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189 } |
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190 |
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191 Rule FnName() { |
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192 return Sequence( |
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193 push(null), // marker |
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194 Name(), |
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195 ZeroOrMore( |
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196 '.', Spaces(), |
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197 makeVarExp(), |
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198 NameExpr() |
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199 ), |
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200 makeSettableVar() |
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201 ); |
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202 } |
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203 |
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204 Rule LocalFunctionStmt() { |
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205 return Sequence( |
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206 Keyword("local"), Keyword("function"), LocalName(), Function(), |
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207 push( new SetStmt( new SetLocalVar(symbolsSize()-1), expr(pop()) ) ) |
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208 ); |
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209 } |
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210 |
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211 Rule BreakStmt() { |
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212 return Sequence( |
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213 Keyword("break"), |
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214 frame.loops > 0, |
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215 push( new BreakStmt() ) |
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216 ); |
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217 } |
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218 |
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219 Rule GenericForStmt() { |
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220 Var<Integer> stackStart = new Var<Integer>(symbolsSize()); |
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221 return Sequence( |
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222 Keyword("for"), NameList(), Keyword("in"), Expr(), Keyword("do"), LoopBlock(), Keyword("end"), |
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223 push( new GenericForStmt( stackStart.get(), symbolsSize() - stackStart.get(), expr(pop(1)), (Stmt)pop() ) ), |
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224 popSymbols( symbolsSize() - stackStart.get() ) |
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225 ); |
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226 } |
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227 |
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228 Rule NumericForStmt() { |
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229 return Sequence( |
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230 Keyword("for"), Name(), '=', Spaces(), Expr(), ',', Spaces(), Expr(), |
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231 push( new ConstExpr(new LuaNumber(1)) ), // default step |
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232 Optional( |
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233 ',', Spaces(), |
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234 drop(), |
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235 Expr() |
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236 ), |
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237 addSymbol( (String)pop(3) ), // add "for" var to symbols |
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238 Keyword("do"), LoopBlock(), Keyword("end"), |
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239 push( new NumericForStmt( symbolsSize()-1, expr(pop(3)), expr(pop(2)), expr(pop(1)), (Stmt)pop() ) ), |
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240 popSymbols(1) |
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241 ); |
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242 } |
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243 |
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244 Rule DoStmt() { |
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245 return Sequence( |
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246 Keyword("do"), Block(), Keyword("end") |
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247 ); |
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248 } |
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249 |
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250 Rule LocalStmt(Var<List<Stmt>> stmts) { |
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251 Var<Integer> stackStart = new Var<Integer>(symbolsSize()); |
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252 return Sequence( |
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253 Keyword("local"), NameList(), |
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254 Optional( |
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255 '=', Spaces(), ExpList(), |
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256 stmts.get().add( newSetLocalStmt(stackStart.get()) ) |
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257 ) |
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258 ); |
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259 } |
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260 |
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261 Rule NameList() { |
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262 return Sequence( |
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263 LocalName(), |
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264 ZeroOrMore( |
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265 ',', Spaces(), LocalName() |
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266 ) |
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267 ); |
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268 } |
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269 |
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270 Rule LocalName() { |
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271 return Sequence( |
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272 Name(), |
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273 addSymbol( (String)pop() ) |
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274 ); |
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275 } |
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276 |
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277 SetStmt newSetLocalStmt(int stackStart) { |
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278 Expressions values = (Expressions)pop(); |
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279 SetLocalVar[] vars = new SetLocalVar[symbolsSize()-stackStart]; |
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280 for( int i=0; i<vars.length; i++ ) { |
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281 vars[i] = new SetLocalVar(stackStart+i); |
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282 } |
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283 return new SetStmt( vars, values ); |
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284 } |
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285 |
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286 Rule WhileStmt() { |
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287 return Sequence( |
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288 Keyword("while"), Expr(), Keyword("do"), LoopBlock(), Keyword("end"), |
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289 push( new WhileStmt( expr(pop(1)), (Stmt)pop() ) ) |
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290 ); |
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291 } |
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292 |
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293 Rule RepeatStmt() { |
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294 return Sequence( |
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295 Keyword("repeat"), LoopBlock(), Keyword("until"), Expr(), |
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296 push( new RepeatStmt( (Stmt)pop(1), expr(pop()) ) ) |
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297 ); |
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298 } |
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299 |
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300 Rule LoopBlock() { |
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301 return Sequence( incLoops(), Block(), decLoops() ); |
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302 } |
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303 |
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304 Rule IfStmt() { |
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305 Var<Integer> n = new Var<Integer>(1); |
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306 return Sequence( |
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307 Keyword("if"), Expr(), Keyword("then"), Block(), |
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308 push(Stmt.EMPTY), |
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309 ZeroOrMore( |
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310 Keyword("elseif"), drop(), Expr(), Keyword("then"), Block(), |
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311 push(Stmt.EMPTY), |
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312 n.set(n.get()+1) |
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313 ), |
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314 Optional( |
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315 Keyword("else"), drop(), Block() |
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316 ), |
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317 Keyword("end"), |
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318 buildIfStmt(n.get()) |
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319 ); |
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320 } |
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321 |
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322 boolean buildIfStmt(int n) { |
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323 while( n-- > 0 ) { |
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324 Stmt elseStmt = (Stmt)pop(); |
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325 Stmt thenStmt = (Stmt)pop(); |
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326 Expr cnd = expr(pop()); |
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327 push( new IfStmt(cnd,thenStmt,elseStmt) ); |
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328 } |
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329 return true; |
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330 } |
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331 |
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332 Rule SetStmt() { |
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333 return Sequence( |
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334 VarList(), |
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335 '=', Spaces(), |
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336 ExpList(), |
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337 push( newSetStmt() ) |
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338 ); |
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339 } |
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340 |
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341 Rule ExpressionsStmt() { |
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342 return Sequence( |
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343 ExpList(), |
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344 push( new ExpressionsStmt((Expressions)pop()) ) |
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345 ); |
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346 } |
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347 |
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348 SetStmt newSetStmt() { |
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349 Expressions values = (Expressions)pop(); |
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350 @SuppressWarnings("unchecked") |
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351 List<Settable> vars = (List<Settable>)pop(); |
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352 return new SetStmt( vars.toArray(new Settable[0]), values ); |
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353 } |
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354 |
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355 Rule VarList() { |
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356 Var<List<Settable>> vars = new Var<List<Settable>>(new ArrayList<Settable>()); |
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357 return Sequence( |
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358 SettableVar(), |
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359 vars.get().add( (Settable)pop() ), |
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360 ZeroOrMore( |
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361 ',', Spaces(), SettableVar(), |
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362 vars.get().add( (Settable)pop() ) |
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363 ), |
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364 push(vars.get()) |
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365 ); |
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366 } |
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367 |
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368 Rule SettableVar() { |
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369 return Sequence( Var(), makeSettableVar() ); |
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370 } |
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371 |
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372 boolean makeSettableVar() { |
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373 Object obj2 = pop(); |
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374 if( obj2==null ) |
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375 return false; |
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376 Object obj1 = pop(); |
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377 if( obj1==null ) { |
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378 String name = (String)obj2; |
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379 int index = index(name); |
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380 if( index == -1 ) { |
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381 push( new SetTableEntry( EnvExpr.INSTANCE, new ConstExpr(name) ) ); |
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382 } else { |
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383 push( new SetLocalVar(index) ); |
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384 } |
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385 } else { |
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386 Expr key = expr(obj2); |
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387 Expr table = expr(obj1); |
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388 push( new SetTableEntry(table,key) ); |
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389 } |
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390 return true; |
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391 } |
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392 |
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393 Rule Expr() { |
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394 return OrExpr(); |
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395 } |
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396 |
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397 Rule OrExpr() { |
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398 return Sequence( |
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399 AndExpr(), |
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400 ZeroOrMore( "or", Spaces(), AndExpr(), push( new OrExpr(expr(pop(1)),expr(pop())) ) ) |
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401 ); |
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402 } |
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403 |
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404 Rule AndExpr() { |
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405 return Sequence( |
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406 RelExpr(), |
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407 ZeroOrMore( "and", Spaces(), RelExpr(), push( new AndExpr(expr(pop(1)),expr(pop())) ) ) |
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408 ); |
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409 } |
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410 |
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411 Rule RelExpr() { |
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412 return Sequence( |
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413 ConcatExpr(), |
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414 ZeroOrMore( |
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415 FirstOf( |
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416 Sequence( "==", Spaces(), ConcatExpr(), push( new EqExpr(expr(pop(1)),expr(pop())) ) ), |
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417 Sequence( "~=", Spaces(), ConcatExpr(), push( new NotExpr(new EqExpr(expr(pop(1)),expr(pop()))) ) ), |
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418 Sequence( "<=", Spaces(), ConcatExpr(), push( new LeExpr(expr(pop(1)),expr(pop())) ) ), |
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419 Sequence( ">=", Spaces(), ConcatExpr(), push( new LeExpr(expr(pop()),expr(pop())) ) ), |
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420 Sequence( "<", Spaces(), ConcatExpr(), push( new LtExpr(expr(pop(1)),expr(pop())) ) ), |
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421 Sequence( ">", Spaces(), ConcatExpr(), push( new LtExpr(expr(pop()),expr(pop())) ) ) |
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422 ) |
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423 ) |
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424 ); |
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425 } |
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426 |
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427 Rule ConcatExpr() { |
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428 return Sequence( |
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429 SumExpr(), |
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430 Optional( "..", Spaces(), ConcatExpr(), push( new ConcatExpr(expr(pop(1)),expr(pop())) ) ) |
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431 ); |
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432 } |
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433 |
7
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434 Rule SumExpr() { |
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435 return Sequence( |
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436 TermExpr(), |
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437 ZeroOrMore( |
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438 FirstOf( |
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439 Sequence( '+', Spaces(), TermExpr(), push( new AddExpr(expr(pop(1)),expr(pop())) ) ), |
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440 Sequence( '-', TestNot('-'), Spaces(), TermExpr(), push( new SubExpr(expr(pop(1)),expr(pop())) ) ) |
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441 ) |
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442 ) |
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443 ); |
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444 } |
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445 |
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446 Rule TermExpr() { |
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447 return Sequence( |
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448 UnaryExpr(), |
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449 ZeroOrMore( |
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450 FirstOf( |
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451 Sequence( '*', Spaces(), UnaryExpr(), push( new MulExpr(expr(pop(1)),expr(pop())) ) ), |
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452 Sequence( '/', Spaces(), UnaryExpr(), push( new DivExpr(expr(pop(1)),expr(pop())) ) ), |
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453 Sequence( '%', Spaces(), UnaryExpr(), push( new ModExpr(expr(pop(1)),expr(pop())) ) ) |
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454 ) |
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455 ) |
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456 ); |
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457 } |
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458 |
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459 Rule UnaryExpr() { |
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460 return FirstOf( |
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461 Sequence( '#', Spaces(), PowExpr(), push( new LenExpr(expr(pop())) ) ), |
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462 Sequence( '-', TestNot('-'), Spaces(), PowExpr(), push( new UnmExpr(expr(pop())) ) ), |
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463 Sequence( "not", Spaces(), PowExpr(), push( new NotExpr(expr(pop())) ) ), |
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464 PowExpr() |
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465 ); |
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466 } |
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467 |
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468 Rule PowExpr() { |
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469 return Sequence( |
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470 SingleExpr(), |
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471 Optional( '^', Spaces(), PowExpr(), push( new PowExpr(expr(pop(1)),expr(pop())) ) ) |
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472 ); |
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473 } |
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474 |
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475 Rule SingleExpr() { |
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476 return FirstOf( |
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477 FunctionExpr(), |
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478 TableExpr(), |
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479 VarExp(), |
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480 LiteralExpr() |
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481 ); |
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482 } |
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483 |
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484 Rule FunctionExpr() { |
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485 return Sequence( "function", Spaces(), Function() ); |
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486 } |
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487 |
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488 Rule Function() { |
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489 return Sequence( |
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490 action( frame = new Frame(frame) ), |
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491 '(', incParens(), Spaces(), Optional(NameList()), ')', decParens(), Spaces(), Block(), Keyword("end"), |
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492 push( new Chunk( (Stmt)pop(), frame.stackSize, symbolsSize() ) ), |
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493 action( frame = frame.parent ) |
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494 ); |
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495 } |
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496 |
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497 Rule TableExpr() { |
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498 return Sequence( |
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499 '{', incParens(), Spaces(), |
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500 push( new ArrayList<TableExpr.Field>() ), |
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501 push( 1.0 ), // counter |
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502 Optional( |
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503 Field(), |
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504 ZeroOrMore( |
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505 FieldSep(), |
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506 Field() |
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507 ), |
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508 Optional( FieldSep() ) |
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509 ), |
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510 '}', decParens(), |
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511 push( newTableExpr() ), |
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512 Spaces() |
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513 ); |
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514 } |
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515 |
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516 TableExpr newTableExpr() { |
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517 pop(); // counter |
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518 @SuppressWarnings("unchecked") |
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519 List<TableExpr.Field> list = (List<TableExpr.Field>)pop(); |
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520 return new TableExpr(list.toArray(new TableExpr.Field[0])); |
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521 } |
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522 |
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523 Rule FieldSep() { |
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524 return Sequence( AnyOf(",;"), Spaces() ); |
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525 } |
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526 |
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527 Rule Field() { |
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528 return FirstOf( |
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529 Sequence( |
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530 FirstOf( SubExpr(), NameExpr() ), |
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531 '=', Spaces(), Expr(), |
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532 addField() |
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533 ), |
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534 Sequence( |
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535 Expr(), |
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536 addIndexedField() |
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537 ) |
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538 ); |
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539 } |
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540 |
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541 boolean addField() { |
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542 TableExpr.Field field = new TableExpr.Field( expr(pop(1)), expr(pop()) ); |
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543 @SuppressWarnings("unchecked") |
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544 List<TableExpr.Field> list = (List<TableExpr.Field>)peek(1); |
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545 list.add(field); |
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546 return true; |
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547 } |
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548 |
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549 boolean addIndexedField() { |
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550 Expr val = expr(pop()); |
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551 double i = (Double)pop(); |
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552 TableExpr.Field field = new TableExpr.Field( new ConstExpr(new LuaNumber(i)), val ); |
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553 push( i + 1 ); |
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554 @SuppressWarnings("unchecked") |
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555 List<TableExpr.Field> list = (List<TableExpr.Field>)peek(1); |
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556 list.add(field); |
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557 return true; |
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558 } |
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559 |
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560 static Expr expr(Object obj) { |
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561 if( obj instanceof Expressions ) |
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562 return new ExpressionsExpr((Expressions)obj); |
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563 return (Expr)obj; |
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564 } |
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565 |
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566 Rule VarExp() { |
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567 return Sequence( |
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568 Var(), |
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569 makeVarExp() |
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570 ); |
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571 } |
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572 |
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573 Rule Var() { |
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574 return Sequence( |
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575 FirstOf( |
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576 Sequence( |
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577 '(', incParens(), Spaces(), Expr(), ')', decParens(), Spaces(), |
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578 push(expr(pop())), |
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579 push(null) // marker |
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580 ), |
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581 Sequence( |
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582 push(null), // marker |
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583 Name() |
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584 ) |
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585 ), |
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586 ZeroOrMore( |
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587 makeVarExp(), |
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588 FirstOf( |
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589 SubExpr(), |
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590 Sequence( '.', Spaces(), NameExpr() ), |
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591 Sequence( |
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592 Args(), |
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593 push(null) // marker |
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594 ) |
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595 ) |
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596 ) |
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597 ); |
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598 } |
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599 |
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600 boolean makeVarExp() { |
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601 Object obj2 = pop(); |
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602 if( obj2==null ) |
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603 return true; |
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604 Object obj1 = pop(); |
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605 if( obj1==null ) { |
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606 String name = (String)obj2; |
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607 int index = index(name); |
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608 if( index == -1 ) { |
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609 return push( new GetExpr( EnvExpr.INSTANCE, new ConstExpr(name) ) ); |
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610 } else { |
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611 return push( new GetLocalVar(index) ); |
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612 } |
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613 } |
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614 return push( new GetExpr( expr(obj1), expr(obj2) ) ); |
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615 } |
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616 |
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617 // function should be on top of the stack |
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618 Rule Args() { |
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619 return Sequence( |
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620 FirstOf( |
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621 Sequence( |
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622 '(', incParens(), Spaces(), Expressions(), ')', decParens(), Spaces() |
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623 ), |
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624 Sequence( |
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625 TableExpr(), |
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626 push( new ExpList.SingleExpList(expr(pop())) ) |
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627 ), |
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628 Sequence( |
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629 StringLiteral(), Spaces(), |
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630 push( new ExpList.SingleExpList(new ConstExpr(pop())) ) |
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631 ) |
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632 ), |
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633 push( new FnCall( expr(pop(1)), (Expressions)pop() ) ) |
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634 ); |
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635 } |
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636 |
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637 Rule Expressions() { |
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638 return FirstOf( |
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639 ExpList(), |
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640 push( ExpList.emptyExpList ) |
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641 ); |
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642 } |
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643 |
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644 Rule ExpList() { |
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645 Var<ExpList.Builder> builder = new Var<ExpList.Builder>(new ExpList.Builder()); |
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646 return Sequence( |
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647 Expr(), |
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648 addToExpList(builder.get()), |
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649 ZeroOrMore( |
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650 ',', Spaces(), Expr(), |
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651 addToExpList(builder.get()) |
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652 ), |
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653 push( builder.get().build() ) |
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654 ); |
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655 } |
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656 |
17
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657 boolean addToExpList(ExpList.Builder bld) { |
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658 Object obj = pop(); |
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659 if( obj instanceof Expressions ) { |
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660 bld.add( (Expressions)obj ); |
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661 } else { |
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662 bld.add( (Expr)obj ); |
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663 } |
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664 return true; |
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665 } |
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666 |
17
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667 |
11
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668 Rule SubExpr() { |
16
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669 return Sequence( '[', incParens(), Spaces(), Expr(), ']', decParens(), Spaces() ); |
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670 } |
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671 |
17
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672 Rule NameExpr() { |
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673 return Sequence( |
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674 Name(), |
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675 push( new ConstExpr((String)pop()) ) |
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676 ); |
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677 } |
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678 |
9
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679 Rule Name() { |
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680 return Sequence( |
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681 Sequence( |
17
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682 NameFirstChar(), |
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683 ZeroOrMore( NameChar() ) |
9
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684 ), |
17
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685 !keywords.contains(match()), |
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686 push(match()), |
9
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687 Spaces() |
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688 ); |
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689 } |
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690 |
17
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691 Rule NameChar() { |
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692 return FirstOf( NameFirstChar(), Digit() ); |
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693 } |
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694 |
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695 Rule NameFirstChar() { |
9
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696 return FirstOf( |
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697 CharRange('a', 'z'), |
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698 CharRange('A', 'Z'), |
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699 '_' |
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|
700 ); |
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701 } |
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702 |
17
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703 Rule Keyword(String keyword) { |
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704 return Sequence( |
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705 keyword, |
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706 TestNot( NameChar() ), |
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707 Spaces() |
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708 ); |
12
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709 } |
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|
710 |
17
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711 static final Set<String> keywords = new HashSet<String>(Arrays.asList( |
12
9cea1aea5eef
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712 "and", |
9cea1aea5eef
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713 "break", |
9cea1aea5eef
CmdLine can run files
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714 "do", |
9cea1aea5eef
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715 "else", |
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716 "elseif", |
9cea1aea5eef
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|
717 "end", |
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718 "false", |
9cea1aea5eef
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719 "for", |
9cea1aea5eef
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|
720 "function", |
9cea1aea5eef
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721 "goto", |
9cea1aea5eef
CmdLine can run files
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parents:
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722 "if", |
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changeset
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723 "in", |
9cea1aea5eef
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724 "local", |
9cea1aea5eef
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725 "nil", |
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726 "not", |
9cea1aea5eef
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727 "or", |
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changeset
|
728 "repeat", |
9cea1aea5eef
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|
729 "return", |
9cea1aea5eef
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changeset
|
730 "then", |
9cea1aea5eef
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|
731 "true", |
9cea1aea5eef
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changeset
|
732 "until", |
9cea1aea5eef
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changeset
|
733 "while" |
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|
734 )); |
9cea1aea5eef
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changeset
|
735 |
7
bca8fc5d928b
work on expressions
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|
736 Rule LiteralExpr() { |
bca8fc5d928b
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|
737 return Sequence( |
bca8fc5d928b
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|
738 Literal(), Spaces(), |
5
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start LuaParser
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changeset
|
739 push(new ConstExpr(pop())) |
9ef0fd711101
start LuaParser
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|
740 ); |
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741 } |
9ef0fd711101
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diff
changeset
|
742 |
7
bca8fc5d928b
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|
743 Rule Literal() { |
5
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|
744 return FirstOf( |
7
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diff
changeset
|
745 NilLiteral(), |
bca8fc5d928b
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
6
diff
changeset
|
746 BooleanLiteral(), |
bca8fc5d928b
work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
6
diff
changeset
|
747 NumberLiteral(), |
bca8fc5d928b
work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
6
diff
changeset
|
748 StringLiteral() |
5
9ef0fd711101
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parents:
diff
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|
749 ); |
9ef0fd711101
start LuaParser
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parents:
diff
changeset
|
750 } |
9ef0fd711101
start LuaParser
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff
changeset
|
751 |
7
bca8fc5d928b
work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
6
diff
changeset
|
752 Rule NilLiteral() { |
bca8fc5d928b
work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
6
diff
changeset
|
753 return Sequence( "nil", push(null) ); |
bca8fc5d928b
work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
6
diff
changeset
|
754 } |
bca8fc5d928b
work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
6
diff
changeset
|
755 |
bca8fc5d928b
work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
6
diff
changeset
|
756 Rule BooleanLiteral() { |
bca8fc5d928b
work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
6
diff
changeset
|
757 return FirstOf( |
bca8fc5d928b
work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
6
diff
changeset
|
758 Sequence( "true", push(true) ), |
bca8fc5d928b
work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
6
diff
changeset
|
759 Sequence( "false", push(false) ) |
5
9ef0fd711101
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parents:
diff
changeset
|
760 ); |
9ef0fd711101
start LuaParser
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff
changeset
|
761 } |
9ef0fd711101
start LuaParser
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff
changeset
|
762 |
7
bca8fc5d928b
work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
6
diff
changeset
|
763 Rule NumberLiteral() { |
5
9ef0fd711101
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff
changeset
|
764 return Sequence( |
6
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parents:
5
diff
changeset
|
765 Number(), |
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parents:
5
diff
changeset
|
766 push(new LuaNumber((Double)pop())) |
5
9ef0fd711101
start LuaParser
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff
changeset
|
767 ); |
9ef0fd711101
start LuaParser
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff
changeset
|
768 } |
9ef0fd711101
start LuaParser
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff
changeset
|
769 |
6
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more parsing
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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|
770 Rule Number() { |
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more parsing
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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diff
changeset
|
771 return FirstOf( |
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more parsing
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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diff
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|
772 Sequence( |
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more parsing
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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diff
changeset
|
773 IgnoreCase("0x"), |
16
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finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
774 HexNumber() |
6
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more parsing
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parents:
5
diff
changeset
|
775 ), |
a315783c9524
more parsing
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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diff
changeset
|
776 Sequence( |
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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diff
changeset
|
777 DecNumber(), |
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more parsing
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parents:
5
diff
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|
778 push(Double.parseDouble(match())) |
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parents:
5
diff
changeset
|
779 ) |
5
9ef0fd711101
start LuaParser
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff
changeset
|
780 ); |
9ef0fd711101
start LuaParser
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff
changeset
|
781 } |
9ef0fd711101
start LuaParser
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff
changeset
|
782 |
6
a315783c9524
more parsing
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
5
diff
changeset
|
783 Rule DecNumber() { |
5
9ef0fd711101
start LuaParser
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff
changeset
|
784 return FirstOf( |
9ef0fd711101
start LuaParser
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff
changeset
|
785 Sequence( |
9ef0fd711101
start LuaParser
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff
changeset
|
786 Int(), |
7
bca8fc5d928b
work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
6
diff
changeset
|
787 Optional( '.', Optional(Int()) ), |
11
b7d7069fee58
add assignment statement and CmdLine
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
9
diff
changeset
|
788 Exponent() |
5
9ef0fd711101
start LuaParser
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff
changeset
|
789 ), |
11
b7d7069fee58
add assignment statement and CmdLine
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
9
diff
changeset
|
790 Sequence( '.', Int(), Exponent() ) |
5
9ef0fd711101
start LuaParser
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff
changeset
|
791 ); |
9ef0fd711101
start LuaParser
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff
changeset
|
792 } |
9ef0fd711101
start LuaParser
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff
changeset
|
793 |
11
b7d7069fee58
add assignment statement and CmdLine
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
9
diff
changeset
|
794 Rule Exponent() { |
5
9ef0fd711101
start LuaParser
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff
changeset
|
795 return Optional( |
9ef0fd711101
start LuaParser
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff
changeset
|
796 IgnoreCase('e'), |
9ef0fd711101
start LuaParser
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff
changeset
|
797 Optional(AnyOf("+-")), |
9ef0fd711101
start LuaParser
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parents:
diff
changeset
|
798 Int() |
9ef0fd711101
start LuaParser
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parents:
diff
changeset
|
799 ); |
9ef0fd711101
start LuaParser
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff
changeset
|
800 } |
9ef0fd711101
start LuaParser
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff
changeset
|
801 |
6
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parents:
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changeset
|
802 Rule Int() { |
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parents:
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changeset
|
803 return OneOrMore(Digit()); |
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parents:
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changeset
|
804 } |
a315783c9524
more parsing
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parents:
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diff
changeset
|
805 |
16
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
806 Rule Digit() { |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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diff
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|
807 return CharRange('0', '9'); |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
808 } |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
809 |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
810 Rule HexNumber() { |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
811 return FirstOf( |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
812 Sequence( |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
813 HexInt(), |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
814 push( (double)Long.parseLong(match(),16) ), |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
815 Optional( '.', Optional(HexDec()) ), |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
816 HexExponent() |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
817 ), |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
818 Sequence( push(0.0), '.', HexDec(), HexExponent() ) |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
819 ); |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
820 } |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
821 |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
822 Rule HexDec() { |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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diff
changeset
|
823 return Sequence( |
2a30281ef47c
finish number literals;
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parents:
15
diff
changeset
|
824 HexInt(), |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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diff
changeset
|
825 push( (Double)pop() + (double)Long.parseLong(match(),16) / Math.pow(16,matchLength()) ) |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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diff
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|
826 ); |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
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|
827 } |
2a30281ef47c
finish number literals;
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parents:
15
diff
changeset
|
828 |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
829 Rule HexExponent() { |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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diff
changeset
|
830 return Optional( |
2a30281ef47c
finish number literals;
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parents:
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diff
changeset
|
831 IgnoreCase('p'), |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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diff
changeset
|
832 Sequence( |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
833 Optional(AnyOf("+-")), |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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diff
changeset
|
834 HexInt() |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
835 ), |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
836 push( (Double)pop() * Math.pow(2,(double)Long.parseLong(match())) ) |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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diff
changeset
|
837 ); |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
838 } |
2a30281ef47c
finish number literals;
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parents:
15
diff
changeset
|
839 |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
840 Rule HexInt() { |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
841 return OneOrMore(Digit()); |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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diff
changeset
|
842 } |
2a30281ef47c
finish number literals;
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843 |
2a30281ef47c
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844 |
6
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845 Rule HexDigit() { |
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846 return FirstOf( |
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847 Digit(), |
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848 AnyOf("abcdefABCDEF") |
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849 ); |
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850 } |
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851 |
7
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852 Rule StringLiteral() { |
6
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853 return FirstOf( |
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854 QuotedString('"'), |
16
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|
855 QuotedString('\''), |
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856 LongString() |
2a30281ef47c
finish number literals;
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|
857 ); |
2a30281ef47c
finish number literals;
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parents:
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858 } |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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859 |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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diff
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|
860 Rule LongString() { |
2a30281ef47c
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861 return Sequence( |
17
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|
862 '[', |
16
2a30281ef47c
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parents:
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863 ZeroOrMore('='), |
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finish number literals;
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864 nEquals(matchLength()), |
2a30281ef47c
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parents:
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865 '[', |
2a30281ef47c
finish number literals;
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866 ZeroOrMore( |
2a30281ef47c
finish number literals;
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|
867 TestNot(LongBracketsEnd()), |
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868 ANY |
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|
869 ), |
2a30281ef47c
finish number literals;
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870 push( match() ), |
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871 LongBracketsEnd() |
6
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872 ); |
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873 } |
5
9ef0fd711101
start LuaParser
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874 |
6
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875 Rule QuotedString(char quote) { |
17
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876 StringBuilderVar buf = new StringBuilderVar(); |
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877 return Sequence( |
7
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878 quote, |
6
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879 ZeroOrMore( |
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880 FirstOf( |
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881 Sequence( |
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882 NoneOf("\\\n"+quote), |
17
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883 buf.append(matchedChar()) |
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884 ), |
17
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|
885 EscSeq(buf) |
6
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886 ) |
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887 ), |
7
bca8fc5d928b
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diff
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|
888 quote, |
17
09d41f7490a8
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889 push( buf.getString() ) |
6
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890 ); |
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891 } |
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892 |
17
09d41f7490a8
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893 Rule EscSeq(StringBuilderVar buf) { |
6
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894 return Sequence( |
7
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895 '\\', |
6
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896 FirstOf( |
17
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897 Sequence( 'a', buf.append('\u0007') ), |
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898 Sequence( 'b', buf.append('\b') ), |
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|
899 Sequence( 'f', buf.append('\f') ), |
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|
900 Sequence( 'n', buf.append('\n') ), |
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|
901 Sequence( 'r', buf.append('\r') ), |
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|
902 Sequence( 't', buf.append('\t') ), |
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903 Sequence( 'v', buf.append('\u000b') ), |
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diff
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|
904 Sequence( '\\', buf.append('\\') ), |
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|
905 Sequence( '"', buf.append('"') ), |
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parents:
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diff
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|
906 Sequence( '\'', buf.append('\'') ), |
7
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|
907 Sequence( |
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|
908 'x', |
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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diff
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|
909 Sequence( HexDigit(), HexDigit() ), |
17
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add local variables
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diff
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|
910 buf.append( (char)Integer.parseInt(match(),16) ) |
7
bca8fc5d928b
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|
911 ), |
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|
912 Sequence( |
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|
913 Sequence( |
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diff
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|
914 Digit(), |
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diff
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|
915 Optional( |
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diff
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|
916 Digit(), |
bca8fc5d928b
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diff
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|
917 Optional( |
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diff
changeset
|
918 Digit() |
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diff
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|
919 ) |
bca8fc5d928b
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|
920 ) |
bca8fc5d928b
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diff
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|
921 ), |
17
09d41f7490a8
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|
922 buf.append( (char)Integer.parseInt(match()) ) |
7
bca8fc5d928b
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923 ) |
6
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924 ) |
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925 ); |
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926 } |
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|
927 |
12
9cea1aea5eef
CmdLine can run files
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diff
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|
928 Rule Spaces() { |
14
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929 return ZeroOrMore( |
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whitespace handling;
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930 FirstOf( |
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|
931 AnyOf(" \t"), |
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932 Comment(), |
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|
933 Sequence( '\\', EndOfLine() ), |
16
2a30281ef47c
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934 Sequence( AnyOf("\r\n"), parens > 0 ) |
14
2ddf85634d20
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|
935 ) |
2ddf85634d20
whitespace handling;
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|
936 ); |
2ddf85634d20
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|
937 } |
2ddf85634d20
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938 |
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|
939 Rule Comment() { |
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940 return Sequence( |
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941 "--[", |
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942 ZeroOrMore('='), |
16
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943 nEquals(matchLength()), |
14
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944 '[', |
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945 ZeroOrMore( |
16
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946 TestNot(LongBracketsEnd()), |
14
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947 ANY |
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948 ), |
16
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949 LongBracketsEnd() |
14
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950 ); |
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951 } |
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952 |
16
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953 Rule LongBracketsEnd() { |
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954 return Sequence( ']', ZeroOrMore('='), nEquals==matchLength(), ']' ); |
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955 } |
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956 |
18
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957 static boolean action(Object obj) { |
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958 return true; |
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959 } |
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960 |
12
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961 // for debugging |
14
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962 boolean print(Object o) { |
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963 System.out.println(o); |
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964 return true; |
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965 } |
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966 |
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967 // for testing |
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968 public static void main(String[] args) throws Exception { |
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969 LuaParser parser = Parboiled.createParser(LuaParser.class); |
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970 while( true ) { |
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971 String input = new Scanner(System.in).nextLine(); |
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972 ParsingResult<?> result = new ReportingParseRunner(parser.Target()).run(input); |
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973 if( result.hasErrors() ) { |
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974 System.out.println("Parse Errors:\n" + ErrorUtils.printParseErrors(result)); |
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975 } else { |
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976 Expr expr = expr(result.resultValue); |
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977 LuaState lua = new LuaState(); |
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978 Object val = expr.eval(lua); |
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979 System.out.println("Result: "+Lua.toString(val)); |
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980 } |
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981 } |
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982 } |
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983 } |