Mercurial Hosting > luan
annotate src/luan/interp/LuaParser.java @ 20:d85510d92eee
add BreakStmt
git-svn-id: https://luan-java.googlecode.com/svn/trunk@21 21e917c8-12df-6dd8-5cb6-c86387c605b9
author | fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9> |
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date | Sun, 02 Dec 2012 10:51:18 +0000 |
parents | a7c13c6017f7 |
children | c93d8c781853 |
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1 package luan.interp; |
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2 |
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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 int nEquals; |
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26 int parens = 0; |
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27 List<String> symbols = new ArrayList<String>(); |
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28 int stackSize = 0; |
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29 int loops = 0; |
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30 |
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31 boolean nEquals(int n) { |
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32 nEquals = n; |
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33 return true; |
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34 } |
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35 |
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36 boolean incParens() { |
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37 parens++; |
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38 return true; |
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39 } |
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40 |
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41 boolean decParens() { |
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42 parens--; |
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43 return true; |
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44 } |
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45 |
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46 int index(String name) { |
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47 int i = symbols.size(); |
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48 while( --i >= 0 ) { |
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49 if( symbols.get(i).equals(name) ) |
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50 return i; |
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51 } |
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52 return -1; |
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53 } |
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54 |
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55 boolean popSymbols(int n) { |
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56 while( n-- > 0 ) { |
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57 symbols.remove(symbols.size()-1); |
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58 } |
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59 return true; |
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60 } |
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61 |
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62 boolean incLoops() { |
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63 loops++; |
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64 return true; |
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65 } |
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66 |
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67 boolean decLoops() { |
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68 loops--; |
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69 return true; |
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70 } |
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71 |
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72 |
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73 public Rule Target() { |
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74 return Sequence( |
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75 Spaces(), |
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76 FirstOf( |
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77 Sequence( ExpList(), EOI ), |
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78 Sequence( Chunk(), EOI ) |
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79 ) |
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80 ); |
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81 } |
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82 |
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83 Rule Chunk() { |
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84 return Sequence( |
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85 Block(), |
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86 push( new Chunk( (Stmt)pop(), stackSize ) ) |
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87 ); |
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88 } |
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89 |
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90 Rule Block() { |
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91 Var<List<Stmt>> stmts = new Var<List<Stmt>>(new ArrayList<Stmt>()); |
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92 Var<Integer> stackStart = new Var<Integer>(symbols.size()); |
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93 return Sequence( |
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94 Optional( Stmt(stmts) ), |
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95 ZeroOrMore( |
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96 StmtSep(), |
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97 Optional( Stmt(stmts) ) |
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98 ), |
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99 push( newBlock(stmts.get(),stackStart.get()) ) |
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100 ); |
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101 } |
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102 |
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103 Stmt newBlock(List<Stmt> stmts,int stackStart) { |
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104 if( stackSize < symbols.size() ) |
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105 stackSize = symbols.size(); |
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106 int stackEnd = symbols.size(); |
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107 popSymbols( stackEnd - stackStart ); |
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108 if( stmts.isEmpty() ) |
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109 return Stmt.EMPTY; |
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110 if( stmts.size()==1 && stackStart==stackEnd ) |
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111 return stmts.get(0); |
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112 return new Block( stmts.toArray(new Stmt[0]), stackStart, stackEnd ); |
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113 } |
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114 |
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115 Rule StmtSep() { |
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116 return Sequence( |
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117 FirstOf( |
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118 ';', |
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119 Sequence( |
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120 Optional( "--", ZeroOrMore(NoneOf("\r\n")) ), |
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121 EndOfLine() |
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122 ) |
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123 ), |
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124 Spaces() |
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125 ); |
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126 } |
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127 |
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128 Rule EndOfLine() { |
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129 return FirstOf("\r\n", '\r', '\n'); |
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130 } |
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131 |
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132 Rule Stmt(Var<List<Stmt>> stmts) { |
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133 return FirstOf( |
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134 LocalStmt(stmts), |
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135 Sequence( |
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136 FirstOf( |
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137 BreakStmt(), |
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138 GenericForStmt(), |
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139 NumericForStmt(), |
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140 DoStmt(), |
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141 WhileStmt(), |
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142 RepeatStmt(), |
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143 IfStmt(), |
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144 SetStmt(), |
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145 ExpressionsStmt() |
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146 ), |
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147 stmts.get().add( (Stmt)pop() ) |
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148 ) |
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149 ); |
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150 } |
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151 |
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152 Rule BreakStmt() { |
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153 return Sequence( |
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154 Keyword("break"), |
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155 loops > 0, |
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156 push( new BreakStmt() ) |
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157 ); |
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158 } |
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159 |
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160 Rule GenericForStmt() { |
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161 Var<Integer> stackStart = new Var<Integer>(symbols.size()); |
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162 return Sequence( |
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163 Keyword("for"), NameList(), Keyword("in"), Expr(), Keyword("do"), LoopBlock(), Keyword("end"), |
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164 push( new GenericForStmt( stackStart.get(), symbols.size() - stackStart.get(), expr(pop(1)), (Stmt)pop() ) ), |
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165 popSymbols( symbols.size() - stackStart.get() ) |
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166 ); |
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167 } |
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168 |
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169 Rule NumericForStmt() { |
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170 return Sequence( |
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171 Keyword("for"), Name(), '=', Spaces(), Expr(), ',', Spaces(), Expr(), |
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172 push( new ConstExpr(new LuaNumber(1)) ), // default step |
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173 Optional( |
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174 ',', Spaces(), |
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175 drop(), |
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176 Expr() |
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177 ), |
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178 symbols.add( (String)pop(3) ), // add "for" var to symbols |
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179 Keyword("do"), LoopBlock(), Keyword("end"), |
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180 push( new NumericForStmt( symbols.size()-1, expr(pop(3)), expr(pop(2)), expr(pop(1)), (Stmt)pop() ) ), |
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181 popSymbols(1) |
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182 ); |
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183 } |
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184 |
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185 Rule DoStmt() { |
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186 return Sequence( |
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187 Keyword("do"), Block(), Keyword("end") |
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188 ); |
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189 } |
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190 |
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191 Rule LocalStmt(Var<List<Stmt>> stmts) { |
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192 Var<Integer> stackStart = new Var<Integer>(symbols.size()); |
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193 return Sequence( |
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194 Keyword("local"), NameList(), |
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195 Optional( |
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196 '=', Spaces(), ExpList(), |
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197 stmts.get().add( newSetLocalStmt(stackStart.get()) ) |
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198 ) |
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199 ); |
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200 } |
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201 |
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202 Rule NameList() { |
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203 return Sequence( |
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204 Name(), |
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205 symbols.add( (String)pop() ), |
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206 ZeroOrMore( |
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207 ',', Spaces(), Name(), |
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208 symbols.add( (String)pop() ) |
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209 ) |
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210 ); |
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211 } |
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212 |
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213 SetStmt newSetLocalStmt(int stackStart) { |
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214 Expressions values = (Expressions)pop(); |
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215 SetLocalVar[] vars = new SetLocalVar[symbols.size()-stackStart]; |
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216 for( int i=0; i<vars.length; i++ ) { |
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217 vars[i] = new SetLocalVar(stackStart+i); |
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218 } |
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219 return new SetStmt( vars, values ); |
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220 } |
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221 |
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222 Rule WhileStmt() { |
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223 return Sequence( |
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224 Keyword("while"), Expr(), Keyword("do"), LoopBlock(), Keyword("end"), |
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225 push( new WhileStmt( expr(pop(1)), (Stmt)pop() ) ) |
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226 ); |
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227 } |
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228 |
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229 Rule RepeatStmt() { |
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230 return Sequence( |
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231 Keyword("repeat"), LoopBlock(), Keyword("until"), Expr(), |
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232 push( new RepeatStmt( (Stmt)pop(1), expr(pop()) ) ) |
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233 ); |
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234 } |
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235 |
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236 Rule LoopBlock() { |
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237 return Sequence( incLoops(), Block(), decLoops() ); |
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238 } |
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239 |
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240 Rule IfStmt() { |
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241 Var<Integer> n = new Var<Integer>(1); |
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242 return Sequence( |
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243 Keyword("if"), Expr(), Keyword("then"), Block(), |
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244 push(Stmt.EMPTY), |
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245 ZeroOrMore( |
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246 Keyword("elseif"), drop(), Expr(), Keyword("then"), Block(), |
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247 push(Stmt.EMPTY), |
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248 n.set(n.get()+1) |
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249 ), |
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250 Optional( |
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251 Keyword("else"), drop(), Block() |
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252 ), |
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253 Keyword("end"), |
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254 buildIfStmt(n.get()) |
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255 ); |
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256 } |
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257 |
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258 boolean buildIfStmt(int n) { |
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259 while( n-- > 0 ) { |
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260 Stmt elseStmt = (Stmt)pop(); |
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261 Stmt thenStmt = (Stmt)pop(); |
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262 Expr cnd = expr(pop()); |
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263 push( new IfStmt(cnd,thenStmt,elseStmt) ); |
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264 } |
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265 return true; |
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266 } |
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267 |
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268 Rule SetStmt() { |
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269 return Sequence( |
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270 VarList(), |
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271 '=', Spaces(), |
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272 ExpList(), |
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273 push( newSetStmt() ) |
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274 ); |
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275 } |
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276 |
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277 Rule ExpressionsStmt() { |
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278 return Sequence( |
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279 ExpList(), |
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280 push( new ExpressionsStmt((Expressions)pop()) ) |
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281 ); |
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282 } |
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283 |
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284 SetStmt newSetStmt() { |
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285 Expressions values = (Expressions)pop(); |
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286 @SuppressWarnings("unchecked") |
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287 List<Settable> vars = (List<Settable>)pop(); |
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288 return new SetStmt( vars.toArray(new Settable[0]), values ); |
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289 } |
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290 |
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291 Rule VarList() { |
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292 return Sequence( |
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293 push(new ArrayList<Settable>()), |
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294 Var(), |
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295 addToVarList(), |
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296 ZeroOrMore( |
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297 ',', Spaces(), Var(), |
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298 addToVarList() |
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299 ) |
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300 ); |
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301 } |
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302 |
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303 boolean addToVarList() { |
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304 Object obj2 = pop(); |
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305 if( obj2==null ) |
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306 return false; |
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307 Object obj1 = pop(); |
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308 @SuppressWarnings("unchecked") |
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309 List<Settable> vars = (List<Settable>)peek(); |
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310 if( obj1==null ) { |
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311 String name = (String)obj2; |
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312 int index = index(name); |
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313 if( index == -1 ) { |
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314 vars.add( new SetTableEntry( EnvExpr.INSTANCE, new ConstExpr(name) ) ); |
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315 } else { |
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316 vars.add( new SetLocalVar(index) ); |
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317 } |
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318 } else { |
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319 Expr key = expr(obj2); |
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320 Expr table = expr(obj1); |
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321 vars.add( new SetTableEntry(table,key) ); |
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322 } |
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323 return true; |
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324 } |
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325 |
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326 Rule Expr() { |
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327 return OrExpr(); |
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328 } |
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329 |
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330 Rule OrExpr() { |
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331 return Sequence( |
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332 AndExpr(), |
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333 ZeroOrMore( "or", Spaces(), AndExpr(), push( new OrExpr(expr(pop(1)),expr(pop())) ) ) |
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334 ); |
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335 } |
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336 |
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337 Rule AndExpr() { |
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338 return Sequence( |
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339 RelExpr(), |
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340 ZeroOrMore( "and", Spaces(), RelExpr(), push( new AndExpr(expr(pop(1)),expr(pop())) ) ) |
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341 ); |
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342 } |
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343 |
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344 Rule RelExpr() { |
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345 return Sequence( |
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346 ConcatExpr(), |
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347 ZeroOrMore( |
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348 FirstOf( |
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349 Sequence( "==", Spaces(), ConcatExpr(), push( new EqExpr(expr(pop(1)),expr(pop())) ) ), |
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350 Sequence( "~=", Spaces(), ConcatExpr(), push( new NotExpr(new EqExpr(expr(pop(1)),expr(pop()))) ) ), |
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351 Sequence( "<=", Spaces(), ConcatExpr(), push( new LeExpr(expr(pop(1)),expr(pop())) ) ), |
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352 Sequence( ">=", Spaces(), ConcatExpr(), push( new LeExpr(expr(pop()),expr(pop())) ) ), |
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353 Sequence( "<", Spaces(), ConcatExpr(), push( new LtExpr(expr(pop(1)),expr(pop())) ) ), |
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354 Sequence( ">", Spaces(), ConcatExpr(), push( new LtExpr(expr(pop()),expr(pop())) ) ) |
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355 ) |
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356 ) |
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357 ); |
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358 } |
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359 |
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360 Rule ConcatExpr() { |
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361 return Sequence( |
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362 SumExpr(), |
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363 Optional( "..", Spaces(), ConcatExpr(), push( new ConcatExpr(expr(pop(1)),expr(pop())) ) ) |
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364 ); |
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365 } |
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366 |
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367 Rule SumExpr() { |
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368 return Sequence( |
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369 TermExpr(), |
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370 ZeroOrMore( |
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371 FirstOf( |
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372 Sequence( '+', Spaces(), TermExpr(), push( new AddExpr(expr(pop(1)),expr(pop())) ) ), |
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373 Sequence( '-', TestNot('-'), Spaces(), TermExpr(), push( new SubExpr(expr(pop(1)),expr(pop())) ) ) |
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374 ) |
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375 ) |
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376 ); |
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377 } |
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378 |
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379 Rule TermExpr() { |
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380 return Sequence( |
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381 UnaryExpr(), |
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382 ZeroOrMore( |
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383 FirstOf( |
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384 Sequence( '*', Spaces(), UnaryExpr(), push( new MulExpr(expr(pop(1)),expr(pop())) ) ), |
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385 Sequence( '/', Spaces(), UnaryExpr(), push( new DivExpr(expr(pop(1)),expr(pop())) ) ), |
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386 Sequence( '%', Spaces(), UnaryExpr(), push( new ModExpr(expr(pop(1)),expr(pop())) ) ) |
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387 ) |
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388 ) |
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389 ); |
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390 } |
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391 |
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392 Rule UnaryExpr() { |
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393 return FirstOf( |
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394 Sequence( '#', Spaces(), PowExpr(), push( new LenExpr(expr(pop())) ) ), |
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395 Sequence( '-', TestNot('-'), Spaces(), PowExpr(), push( new UnmExpr(expr(pop())) ) ), |
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396 Sequence( "not", Spaces(), PowExpr(), push( new NotExpr(expr(pop())) ) ), |
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397 PowExpr() |
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398 ); |
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399 } |
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400 |
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401 Rule PowExpr() { |
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402 return Sequence( |
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403 SingleExpr(), |
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404 Optional( '^', Spaces(), PowExpr(), push( new PowExpr(expr(pop(1)),expr(pop())) ) ) |
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405 ); |
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406 } |
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407 |
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408 Rule SingleExpr() { |
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409 return FirstOf( |
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410 TableExpr(), |
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411 VarExp(), |
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412 LiteralExpr() |
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413 ); |
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414 } |
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415 |
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416 Rule TableExpr() { |
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417 return Sequence( |
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418 '{', incParens(), Spaces(), |
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419 push( new ArrayList<TableExpr.Field>() ), |
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420 push( 1.0 ), // counter |
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421 Optional( |
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422 Field(), |
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423 ZeroOrMore( |
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424 FieldSep(), |
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425 Field() |
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426 ), |
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427 Optional( FieldSep() ) |
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428 ), |
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429 '}', decParens(), |
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430 push( newTableExpr() ), |
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431 Spaces() |
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432 ); |
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433 } |
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434 |
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435 TableExpr newTableExpr() { |
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436 pop(); // counter |
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437 @SuppressWarnings("unchecked") |
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438 List<TableExpr.Field> list = (List<TableExpr.Field>)pop(); |
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439 return new TableExpr(list.toArray(new TableExpr.Field[0])); |
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440 } |
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441 |
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442 Rule FieldSep() { |
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443 return Sequence( AnyOf(",;"), Spaces() ); |
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444 } |
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445 |
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446 Rule Field() { |
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447 return FirstOf( |
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448 Sequence( |
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449 FirstOf( SubExpr(), NameExpr() ), |
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450 '=', Spaces(), Expr(), |
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451 addField() |
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452 ), |
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453 Sequence( |
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454 Expr(), |
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455 addIndexedField() |
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456 ) |
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457 ); |
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458 } |
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459 |
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460 boolean addField() { |
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461 TableExpr.Field field = new TableExpr.Field( expr(pop(1)), expr(pop()) ); |
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462 @SuppressWarnings("unchecked") |
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463 List<TableExpr.Field> list = (List<TableExpr.Field>)peek(1); |
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464 list.add(field); |
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465 return true; |
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466 } |
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467 |
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468 boolean addIndexedField() { |
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469 Expr val = expr(pop()); |
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470 double i = (Double)pop(); |
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471 TableExpr.Field field = new TableExpr.Field( new ConstExpr(new LuaNumber(i)), val ); |
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472 push( i + 1 ); |
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473 @SuppressWarnings("unchecked") |
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474 List<TableExpr.Field> list = (List<TableExpr.Field>)peek(1); |
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475 list.add(field); |
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476 return true; |
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477 } |
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478 |
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479 static Expr expr(Object obj) { |
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480 if( obj instanceof Expressions ) |
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481 return new ExpressionsExpr((Expressions)obj); |
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482 return (Expr)obj; |
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483 } |
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484 |
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485 Rule VarExp() { |
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486 return Sequence( |
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487 Var(), |
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488 makeVarExp() |
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489 ); |
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490 } |
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491 |
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492 Rule Var() { |
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493 return Sequence( |
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494 FirstOf( |
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495 Sequence( |
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496 '(', incParens(), Spaces(), Expr(), ')', decParens(), Spaces(), |
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497 push(expr(pop())), |
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498 push(null) // marker |
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499 ), |
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500 Sequence( |
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501 push(null), // marker |
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502 Name() |
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503 ) |
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504 ), |
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505 ZeroOrMore( |
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506 makeVarExp(), |
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507 FirstOf( |
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508 SubExpr(), |
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509 Sequence( '.', Spaces(), NameExpr() ), |
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510 Sequence( |
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511 Args(), |
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512 push(null) // marker |
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513 ) |
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514 ) |
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515 ) |
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516 ); |
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517 } |
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518 |
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519 boolean makeVarExp() { |
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520 Object obj2 = pop(); |
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521 if( obj2==null ) |
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522 return true; |
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523 Object obj1 = pop(); |
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524 if( obj1==null ) { |
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525 String name = (String)obj2; |
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526 int index = index(name); |
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527 if( index == -1 ) { |
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528 return push( new GetExpr( EnvExpr.INSTANCE, new ConstExpr(name) ) ); |
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529 } else { |
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530 return push( new GetLocalVar(index) ); |
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531 } |
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532 } |
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533 return push( new GetExpr( expr(obj1), expr(obj2) ) ); |
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534 } |
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535 |
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536 // function should be on top of the stack |
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537 Rule Args() { |
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538 return Sequence( |
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539 FirstOf( |
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540 Sequence( |
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541 '(', incParens(), Spaces(), Expressions(), ')', decParens(), Spaces() |
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542 ), |
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543 Sequence( |
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544 TableExpr(), |
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545 push( new ExpList.SingleExpList(expr(pop())) ) |
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546 ), |
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547 Sequence( |
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548 StringLiteral(), Spaces(), |
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549 push( new ExpList.SingleExpList(new ConstExpr(pop())) ) |
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550 ) |
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551 ), |
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552 push( new FnCall( expr(pop(1)), (Expressions)pop() ) ) |
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553 ); |
9
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554 } |
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555 |
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556 Rule Expressions() { |
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557 return FirstOf( |
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558 ExpList(), |
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559 push( ExpList.emptyExpList ) |
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560 ); |
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561 } |
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562 |
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563 Rule ExpList() { |
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564 Var<ExpList.Builder> builder = new Var<ExpList.Builder>(new ExpList.Builder()); |
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565 return Sequence( |
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566 Expr(), |
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567 addToExpList(builder.get()), |
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568 ZeroOrMore( |
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569 ',', Spaces(), Expr(), |
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570 addToExpList(builder.get()) |
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571 ), |
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572 push( builder.get().build() ) |
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573 ); |
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574 } |
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575 |
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576 boolean addToExpList(ExpList.Builder bld) { |
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577 Object obj = pop(); |
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578 if( obj instanceof Expressions ) { |
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579 bld.add( (Expressions)obj ); |
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580 } else { |
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581 bld.add( (Expr)obj ); |
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582 } |
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583 return true; |
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584 } |
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585 |
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586 |
11
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587 Rule SubExpr() { |
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588 return Sequence( '[', incParens(), Spaces(), Expr(), ']', decParens(), Spaces() ); |
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589 } |
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590 |
17
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591 Rule NameExpr() { |
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592 return Sequence( |
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593 Name(), |
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594 push( new ConstExpr((String)pop()) ) |
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595 ); |
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596 } |
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597 |
9
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598 Rule Name() { |
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599 return Sequence( |
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600 Sequence( |
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601 NameFirstChar(), |
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602 ZeroOrMore( NameChar() ) |
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603 ), |
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604 !keywords.contains(match()), |
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605 push(match()), |
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606 Spaces() |
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607 ); |
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608 } |
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609 |
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610 Rule NameChar() { |
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611 return FirstOf( NameFirstChar(), Digit() ); |
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612 } |
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613 |
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614 Rule NameFirstChar() { |
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615 return FirstOf( |
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616 CharRange('a', 'z'), |
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617 CharRange('A', 'Z'), |
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618 '_' |
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619 ); |
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620 } |
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621 |
17
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622 Rule Keyword(String keyword) { |
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623 return Sequence( |
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624 keyword, |
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625 TestNot( NameChar() ), |
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626 Spaces() |
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627 ); |
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628 } |
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629 |
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630 static final Set<String> keywords = new HashSet<String>(Arrays.asList( |
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631 "and", |
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632 "break", |
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633 "do", |
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634 "else", |
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635 "elseif", |
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636 "end", |
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637 "false", |
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638 "for", |
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639 "function", |
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640 "goto", |
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641 "if", |
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642 "in", |
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643 "local", |
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644 "nil", |
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645 "not", |
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646 "or", |
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647 "repeat", |
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648 "return", |
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parents:
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649 "then", |
9cea1aea5eef
CmdLine can run files
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parents:
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650 "true", |
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CmdLine can run files
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parents:
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diff
changeset
|
651 "until", |
9cea1aea5eef
CmdLine can run files
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parents:
11
diff
changeset
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652 "while" |
9cea1aea5eef
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parents:
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|
653 )); |
9cea1aea5eef
CmdLine can run files
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parents:
11
diff
changeset
|
654 |
7
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|
655 Rule LiteralExpr() { |
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|
656 return Sequence( |
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parents:
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657 Literal(), Spaces(), |
5
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658 push(new ConstExpr(pop())) |
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parents:
diff
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659 ); |
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parents:
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660 } |
9ef0fd711101
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|
661 |
7
bca8fc5d928b
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parents:
6
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|
662 Rule Literal() { |
5
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663 return FirstOf( |
7
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664 NilLiteral(), |
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665 BooleanLiteral(), |
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work on expressions
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|
666 NumberLiteral(), |
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667 StringLiteral() |
5
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668 ); |
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669 } |
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|
670 |
7
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|
671 Rule NilLiteral() { |
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parents:
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672 return Sequence( "nil", push(null) ); |
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|
673 } |
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work on expressions
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parents:
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|
674 |
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work on expressions
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parents:
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|
675 Rule BooleanLiteral() { |
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676 return FirstOf( |
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677 Sequence( "true", push(true) ), |
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changeset
|
678 Sequence( "false", push(false) ) |
5
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679 ); |
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680 } |
9ef0fd711101
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parents:
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changeset
|
681 |
7
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682 Rule NumberLiteral() { |
5
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683 return Sequence( |
6
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684 Number(), |
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685 push(new LuaNumber((Double)pop())) |
5
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|
686 ); |
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parents:
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687 } |
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|
688 |
6
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689 Rule Number() { |
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690 return FirstOf( |
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691 Sequence( |
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692 IgnoreCase("0x"), |
16
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finish number literals;
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693 HexNumber() |
6
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694 ), |
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695 Sequence( |
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696 DecNumber(), |
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697 push(Double.parseDouble(match())) |
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698 ) |
5
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699 ); |
9ef0fd711101
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parents:
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700 } |
9ef0fd711101
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701 |
6
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702 Rule DecNumber() { |
5
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703 return FirstOf( |
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704 Sequence( |
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|
705 Int(), |
7
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706 Optional( '.', Optional(Int()) ), |
11
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707 Exponent() |
5
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708 ), |
11
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add assignment statement and CmdLine
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|
709 Sequence( '.', Int(), Exponent() ) |
5
9ef0fd711101
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|
710 ); |
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|
711 } |
9ef0fd711101
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|
712 |
11
b7d7069fee58
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diff
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|
713 Rule Exponent() { |
5
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|
714 return Optional( |
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|
715 IgnoreCase('e'), |
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|
716 Optional(AnyOf("+-")), |
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|
717 Int() |
9ef0fd711101
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parents:
diff
changeset
|
718 ); |
9ef0fd711101
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|
719 } |
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|
720 |
6
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changeset
|
721 Rule Int() { |
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722 return OneOrMore(Digit()); |
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|
723 } |
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724 |
16
2a30281ef47c
finish number literals;
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|
725 Rule Digit() { |
2a30281ef47c
finish number literals;
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726 return CharRange('0', '9'); |
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finish number literals;
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|
727 } |
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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|
728 |
2a30281ef47c
finish number literals;
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parents:
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729 Rule HexNumber() { |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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|
730 return FirstOf( |
2a30281ef47c
finish number literals;
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parents:
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|
731 Sequence( |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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|
732 HexInt(), |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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|
733 push( (double)Long.parseLong(match(),16) ), |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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|
734 Optional( '.', Optional(HexDec()) ), |
2a30281ef47c
finish number literals;
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parents:
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735 HexExponent() |
2a30281ef47c
finish number literals;
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parents:
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|
736 ), |
2a30281ef47c
finish number literals;
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parents:
15
diff
changeset
|
737 Sequence( push(0.0), '.', HexDec(), HexExponent() ) |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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|
738 ); |
2a30281ef47c
finish number literals;
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|
739 } |
2a30281ef47c
finish number literals;
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parents:
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diff
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|
740 |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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diff
changeset
|
741 Rule HexDec() { |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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742 return Sequence( |
2a30281ef47c
finish number literals;
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parents:
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|
743 HexInt(), |
2a30281ef47c
finish number literals;
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744 push( (Double)pop() + (double)Long.parseLong(match(),16) / Math.pow(16,matchLength()) ) |
2a30281ef47c
finish number literals;
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parents:
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diff
changeset
|
745 ); |
2a30281ef47c
finish number literals;
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parents:
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diff
changeset
|
746 } |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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|
747 |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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diff
changeset
|
748 Rule HexExponent() { |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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|
749 return Optional( |
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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|
750 IgnoreCase('p'), |
2a30281ef47c
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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diff
changeset
|
751 Sequence( |
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finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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|
752 Optional(AnyOf("+-")), |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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|
753 HexInt() |
2a30281ef47c
finish number literals;
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parents:
15
diff
changeset
|
754 ), |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
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755 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:
15
diff
changeset
|
756 ); |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
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|
757 } |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
758 |
2a30281ef47c
finish number literals;
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parents:
15
diff
changeset
|
759 Rule HexInt() { |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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|
760 return OneOrMore(Digit()); |
2a30281ef47c
finish number literals;
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parents:
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diff
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|
761 } |
2a30281ef47c
finish number literals;
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parents:
15
diff
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|
762 |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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|
763 |
6
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diff
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|
764 Rule HexDigit() { |
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765 return FirstOf( |
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|
766 Digit(), |
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|
767 AnyOf("abcdefABCDEF") |
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|
768 ); |
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parents:
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|
769 } |
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parents:
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|
770 |
7
bca8fc5d928b
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parents:
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diff
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|
771 Rule StringLiteral() { |
6
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|
772 return FirstOf( |
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|
773 QuotedString('"'), |
16
2a30281ef47c
finish number literals;
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parents:
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diff
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|
774 QuotedString('\''), |
2a30281ef47c
finish number literals;
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parents:
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|
775 LongString() |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
776 ); |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
777 } |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
778 |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
779 Rule LongString() { |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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|
780 return Sequence( |
17
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parents:
16
diff
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|
781 '[', |
16
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
782 ZeroOrMore('='), |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
783 nEquals(matchLength()), |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
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|
784 '[', |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
785 ZeroOrMore( |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
786 TestNot(LongBracketsEnd()), |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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diff
changeset
|
787 ANY |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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diff
changeset
|
788 ), |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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diff
changeset
|
789 push( match() ), |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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diff
changeset
|
790 LongBracketsEnd() |
6
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|
791 ); |
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parents:
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diff
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|
792 } |
5
9ef0fd711101
start LuaParser
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parents:
diff
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793 |
6
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parents:
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diff
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|
794 Rule QuotedString(char quote) { |
17
09d41f7490a8
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|
795 StringBuilderVar buf = new StringBuilderVar(); |
6
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|
796 return Sequence( |
7
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|
797 quote, |
6
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|
798 ZeroOrMore( |
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|
799 FirstOf( |
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|
800 Sequence( |
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parents:
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|
801 NoneOf("\\\n"+quote), |
17
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|
802 buf.append(matchedChar()) |
6
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|
803 ), |
17
09d41f7490a8
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|
804 EscSeq(buf) |
6
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|
805 ) |
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parents:
5
diff
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|
806 ), |
7
bca8fc5d928b
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parents:
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diff
changeset
|
807 quote, |
17
09d41f7490a8
add local variables
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parents:
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|
808 push( buf.getString() ) |
6
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|
809 ); |
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|
810 } |
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|
811 |
17
09d41f7490a8
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parents:
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diff
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|
812 Rule EscSeq(StringBuilderVar buf) { |
6
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|
813 return Sequence( |
7
bca8fc5d928b
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|
814 '\\', |
6
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|
815 FirstOf( |
17
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parents:
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diff
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|
816 Sequence( 'a', buf.append('\u0007') ), |
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parents:
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|
817 Sequence( 'b', buf.append('\b') ), |
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parents:
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diff
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|
818 Sequence( 'f', buf.append('\f') ), |
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parents:
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diff
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|
819 Sequence( 'n', buf.append('\n') ), |
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parents:
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diff
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|
820 Sequence( 'r', buf.append('\r') ), |
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parents:
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diff
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|
821 Sequence( 't', buf.append('\t') ), |
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parents:
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diff
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|
822 Sequence( 'v', buf.append('\u000b') ), |
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parents:
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diff
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|
823 Sequence( '\\', buf.append('\\') ), |
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parents:
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diff
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|
824 Sequence( '"', buf.append('"') ), |
09d41f7490a8
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parents:
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|
825 Sequence( '\'', buf.append('\'') ), |
7
bca8fc5d928b
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parents:
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diff
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|
826 Sequence( |
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diff
changeset
|
827 'x', |
bca8fc5d928b
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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diff
changeset
|
828 Sequence( HexDigit(), HexDigit() ), |
17
09d41f7490a8
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parents:
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diff
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|
829 buf.append( (char)Integer.parseInt(match(),16) ) |
7
bca8fc5d928b
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parents:
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diff
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|
830 ), |
bca8fc5d928b
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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diff
changeset
|
831 Sequence( |
bca8fc5d928b
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changeset
|
832 Sequence( |
bca8fc5d928b
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|
833 Digit(), |
bca8fc5d928b
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|
834 Optional( |
bca8fc5d928b
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|
835 Digit(), |
bca8fc5d928b
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|
836 Optional( |
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|
837 Digit() |
bca8fc5d928b
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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diff
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|
838 ) |
bca8fc5d928b
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parents:
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|
839 ) |
bca8fc5d928b
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parents:
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|
840 ), |
17
09d41f7490a8
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parents:
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|
841 buf.append( (char)Integer.parseInt(match()) ) |
7
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842 ) |
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843 ) |
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844 ); |
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845 } |
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846 |
12
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847 Rule Spaces() { |
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848 return ZeroOrMore( |
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849 FirstOf( |
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850 AnyOf(" \t"), |
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851 Comment(), |
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852 Sequence( '\\', EndOfLine() ), |
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853 Sequence( AnyOf("\r\n"), parens > 0 ) |
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854 ) |
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855 ); |
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856 } |
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857 |
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858 Rule Comment() { |
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859 return Sequence( |
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860 "--[", |
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861 ZeroOrMore('='), |
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862 nEquals(matchLength()), |
14
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863 '[', |
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864 ZeroOrMore( |
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865 TestNot(LongBracketsEnd()), |
14
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866 ANY |
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867 ), |
16
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868 LongBracketsEnd() |
14
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869 ); |
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870 } |
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871 |
16
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872 Rule LongBracketsEnd() { |
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873 return Sequence( ']', ZeroOrMore('='), nEquals==matchLength(), ']' ); |
7
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874 } |
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875 |
18
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876 static boolean action(Object obj) { |
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877 return true; |
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878 } |
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879 |
12
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880 // for debugging |
14
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881 boolean print(Object o) { |
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882 System.out.println(o); |
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883 return true; |
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884 } |
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885 |
5
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886 // for testing |
9ef0fd711101
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887 public static void main(String[] args) throws Exception { |
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888 LuaParser parser = Parboiled.createParser(LuaParser.class); |
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889 while( true ) { |
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890 String input = new Scanner(System.in).nextLine(); |
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891 ParsingResult<?> result = new ReportingParseRunner(parser.Target()).run(input); |
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892 if( result.hasErrors() ) { |
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893 System.out.println("Parse Errors:\n" + ErrorUtils.printParseErrors(result)); |
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894 } else { |
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895 Expr expr = expr(result.resultValue); |
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896 LuaState lua = new LuaState(); |
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897 Object val = expr.eval(lua); |
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898 System.out.println("Result: "+Lua.toString(val)); |
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899 } |
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900 } |
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|
901 } |
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902 } |