Mercurial Hosting > luan
annotate src/luan/interp/LuaParser.java @ 17:09d41f7490a8
add local variables
git-svn-id: https://luan-java.googlecode.com/svn/trunk@18 21e917c8-12df-6dd8-5cb6-c86387c605b9
author | fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9> |
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date | Fri, 30 Nov 2012 11:46:34 +0000 |
parents | 2a30281ef47c |
children | 3971113699b8 |
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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 |
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30 boolean nEquals(int n) { |
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31 nEquals = n; |
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32 return true; |
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33 } |
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34 |
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35 boolean incParens() { |
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36 parens++; |
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37 return true; |
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38 } |
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39 |
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40 boolean decParens() { |
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41 parens--; |
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42 return true; |
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43 } |
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44 |
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45 int index(String name) { |
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46 int i = symbols.size(); |
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47 while( --i >= 0 ) { |
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48 if( symbols.get(i).equals(name) ) |
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49 return i; |
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50 } |
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51 return -1; |
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52 } |
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53 |
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54 public Rule Target() { |
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55 return Sequence( |
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56 Spaces(), |
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57 FirstOf( |
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58 Sequence( ExpList(), EOI ), |
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59 Sequence( Chunk(), EOI ) |
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60 ) |
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61 ); |
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62 } |
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63 |
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64 Rule Chunk() { |
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65 return Sequence( |
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66 Block(), |
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67 push( new Chunk( (Stmt)pop(), stackSize ) ) |
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68 ); |
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69 } |
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70 |
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71 Rule Block() { |
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72 Var<List<Stmt>> stmts = new Var<List<Stmt>>(new ArrayList<Stmt>()); |
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73 return Sequence( |
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74 push(0), // stackCount |
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75 Optional( Stmt(stmts) ), |
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76 ZeroOrMore( |
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77 StmtSep(), |
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78 Optional( Stmt(stmts) ) |
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79 ), |
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80 push( newBlock(stmts.get()) ) |
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81 ); |
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82 } |
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83 |
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84 Stmt newBlock(List<Stmt> stmts) { |
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85 if( stackSize < symbols.size() ) |
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86 stackSize = symbols.size(); |
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87 int stackN = (Integer)pop(); |
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88 for( int i=0; i<stackN; i++ ) { |
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89 symbols.remove(symbols.size()-1); // pop |
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90 } |
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91 if( stmts.isEmpty() ) |
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92 return Stmt.EMPTY; |
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93 if( stmts.size()==1 && stackN==0 ) |
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94 return stmts.get(0); |
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95 return new Block( stmts.toArray(new Stmt[0]), symbols.size(), symbols.size()+stackN ); |
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96 } |
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97 |
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98 Rule StmtSep() { |
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99 return Sequence( |
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100 FirstOf( |
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101 ';', |
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102 Sequence( |
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103 Optional( "--", ZeroOrMore(NoneOf("\r\n")) ), |
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104 EndOfLine() |
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105 ) |
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106 ), |
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107 Spaces() |
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108 ); |
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109 } |
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110 |
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111 Rule EndOfLine() { |
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112 return FirstOf("\r\n", '\r', '\n'); |
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113 } |
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114 |
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115 Rule Stmt(Var<List<Stmt>> stmts) { |
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116 return FirstOf( |
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117 LocalStmt(stmts), |
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118 Sequence( |
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119 FirstOf( |
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120 DoStmt(), |
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121 WhileStmt(), |
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122 RepeatStmt(), |
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123 IfStmt(), |
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124 SetStmt(), |
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125 ExpressionsStmt() |
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126 ), |
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127 stmts.get().add( (Stmt)pop() ) |
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128 ) |
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129 ); |
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130 } |
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131 |
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132 Rule DoStmt() { |
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133 return Sequence( |
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134 Keyword("do"), Block(), Keyword("end") |
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135 ); |
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136 } |
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137 |
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138 Rule LocalStmt(Var<List<Stmt>> stmts) { |
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139 Var<List<String>> names = new Var<List<String>>(new ArrayList<String>()); |
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140 return Sequence( |
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141 Keyword("local"), |
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142 Name(), |
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143 newName(names.get()), |
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144 ZeroOrMore( |
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145 ',', Spaces(), Name(), |
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146 newName(names.get()) |
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147 ), |
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148 Optional( |
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149 '=', Spaces(), |
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150 ExpList(), |
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151 stmts.get().add( newSetLocalStmt(names.get()) ) |
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152 ) |
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153 ); |
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154 } |
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155 |
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156 boolean newName(List<String> names) { |
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157 String name = (String)pop(); |
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158 names.add(name); |
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159 symbols.add(name); |
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160 push( ((Integer)pop()) + 1 ); |
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161 return true; |
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162 } |
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163 |
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164 SetStmt newSetLocalStmt(List<String> names) { |
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165 Expressions values = (Expressions)pop(); |
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166 SetLocalVar[] vars = new SetLocalVar[names.size()]; |
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167 for( int i=0; i<vars.length; i++ ) { |
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168 vars[i] = new SetLocalVar(index(names.get(i))); |
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169 } |
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170 return new SetStmt( vars, values ); |
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171 } |
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172 |
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173 Rule WhileStmt() { |
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174 return Sequence( |
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175 Keyword("while"), Expr(), Keyword("do"), Block(), Keyword("end"), |
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176 push( new WhileStmt( expr(pop(1)), (Stmt)pop() ) ) |
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177 ); |
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178 } |
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179 |
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180 Rule RepeatStmt() { |
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181 return Sequence( |
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182 Keyword("repeat"), Block(), Keyword("until"), Expr(), |
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183 push( new RepeatStmt( (Stmt)pop(1), expr(pop()) ) ) |
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184 ); |
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185 } |
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186 |
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187 Rule IfStmt() { |
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188 Var<Integer> n = new Var<Integer>(1); |
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189 return Sequence( |
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190 Keyword("if"), Expr(), Keyword("then"), Block(), |
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191 push(Stmt.EMPTY), |
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192 ZeroOrMore( |
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193 Keyword("elseif"), drop(), Expr(), Keyword("then"), Block(), |
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194 push(Stmt.EMPTY), |
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195 n.set(n.get()+1) |
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196 ), |
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197 Optional( |
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198 Keyword("else"), drop(), Block() |
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199 ), |
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200 Keyword("end"), |
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201 buildIfStmt(n.get()) |
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202 ); |
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203 } |
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204 |
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205 boolean buildIfStmt(int n) { |
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206 while( n-- > 0 ) { |
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207 Stmt elseStmt = (Stmt)pop(); |
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208 Stmt thenStmt = (Stmt)pop(); |
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209 Expr cnd = expr(pop()); |
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210 push( new IfStmt(cnd,thenStmt,elseStmt) ); |
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211 } |
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212 return true; |
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213 } |
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214 |
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215 Rule SetStmt() { |
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216 return Sequence( |
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217 VarList(), |
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218 '=', Spaces(), |
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219 ExpList(), |
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220 push( newSetStmt() ) |
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221 ); |
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222 } |
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223 |
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224 Rule ExpressionsStmt() { |
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225 return Sequence( |
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226 ExpList(), |
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227 push( new ExpressionsStmt((Expressions)pop()) ) |
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228 ); |
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229 } |
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230 |
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231 SetStmt newSetStmt() { |
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232 Expressions values = (Expressions)pop(); |
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233 @SuppressWarnings("unchecked") |
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234 List<Settable> vars = (List<Settable>)pop(); |
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235 return new SetStmt( vars.toArray(new Settable[0]), values ); |
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236 } |
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237 |
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238 Rule VarList() { |
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239 return Sequence( |
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240 push(new ArrayList<Settable>()), |
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241 Var(), |
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242 addToVarList(), |
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243 ZeroOrMore( |
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244 ',', Spaces(), Var(), |
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245 addToVarList() |
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246 ) |
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247 ); |
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248 } |
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249 |
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250 boolean addToVarList() { |
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251 Object obj2 = pop(); |
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252 if( obj2==null ) |
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253 return false; |
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254 Object obj1 = pop(); |
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255 @SuppressWarnings("unchecked") |
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256 List<Settable> vars = (List<Settable>)peek(); |
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257 if( obj1==null ) { |
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258 String name = (String)obj2; |
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259 int index = index(name); |
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260 if( index == -1 ) { |
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261 vars.add( new SetTableEntry( EnvExpr.INSTANCE, new ConstExpr(name) ) ); |
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262 } else { |
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263 vars.add( new SetLocalVar(index) ); |
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264 } |
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265 } else { |
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266 Expr key = expr(obj2); |
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267 Expr table = expr(obj1); |
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268 vars.add( new SetTableEntry(table,key) ); |
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269 } |
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270 return true; |
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271 } |
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272 |
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273 Rule Expr() { |
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274 return OrExpr(); |
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275 } |
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276 |
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277 Rule OrExpr() { |
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278 return Sequence( |
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279 AndExpr(), |
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280 ZeroOrMore( "or", Spaces(), AndExpr(), push( new OrExpr(expr(pop(1)),expr(pop())) ) ) |
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281 ); |
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282 } |
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283 |
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284 Rule AndExpr() { |
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285 return Sequence( |
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286 RelExpr(), |
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287 ZeroOrMore( "and", Spaces(), RelExpr(), push( new AndExpr(expr(pop(1)),expr(pop())) ) ) |
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288 ); |
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289 } |
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290 |
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291 Rule RelExpr() { |
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292 return Sequence( |
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293 ConcatExpr(), |
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294 ZeroOrMore( |
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295 FirstOf( |
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296 Sequence( "==", Spaces(), ConcatExpr(), push( new EqExpr(expr(pop(1)),expr(pop())) ) ), |
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297 Sequence( "~=", Spaces(), ConcatExpr(), push( new NotExpr(new EqExpr(expr(pop(1)),expr(pop()))) ) ), |
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298 Sequence( "<=", Spaces(), ConcatExpr(), push( new LeExpr(expr(pop(1)),expr(pop())) ) ), |
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299 Sequence( ">=", Spaces(), ConcatExpr(), push( new LeExpr(expr(pop()),expr(pop())) ) ), |
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300 Sequence( "<", Spaces(), ConcatExpr(), push( new LtExpr(expr(pop(1)),expr(pop())) ) ), |
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301 Sequence( ">", Spaces(), ConcatExpr(), push( new LtExpr(expr(pop()),expr(pop())) ) ) |
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302 ) |
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303 ) |
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304 ); |
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305 } |
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306 |
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307 Rule ConcatExpr() { |
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308 return Sequence( |
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309 SumExpr(), |
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310 Optional( "..", Spaces(), ConcatExpr(), push( new ConcatExpr(expr(pop(1)),expr(pop())) ) ) |
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311 ); |
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312 } |
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313 |
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314 Rule SumExpr() { |
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315 return Sequence( |
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316 TermExpr(), |
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317 ZeroOrMore( |
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318 FirstOf( |
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319 Sequence( '+', Spaces(), TermExpr(), push( new AddExpr(expr(pop(1)),expr(pop())) ) ), |
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320 Sequence( '-', TestNot('-'), Spaces(), TermExpr(), push( new SubExpr(expr(pop(1)),expr(pop())) ) ) |
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321 ) |
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322 ) |
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323 ); |
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324 } |
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325 |
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326 Rule TermExpr() { |
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327 return Sequence( |
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328 UnaryExpr(), |
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329 ZeroOrMore( |
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330 FirstOf( |
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331 Sequence( '*', Spaces(), UnaryExpr(), push( new MulExpr(expr(pop(1)),expr(pop())) ) ), |
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332 Sequence( '/', Spaces(), UnaryExpr(), push( new DivExpr(expr(pop(1)),expr(pop())) ) ), |
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333 Sequence( '%', Spaces(), UnaryExpr(), push( new ModExpr(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 } |
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338 |
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339 Rule UnaryExpr() { |
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340 return FirstOf( |
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341 Sequence( '#', Spaces(), PowExpr(), push( new LenExpr(expr(pop())) ) ), |
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342 Sequence( '-', TestNot('-'), Spaces(), PowExpr(), push( new UnmExpr(expr(pop())) ) ), |
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343 Sequence( "not", Spaces(), PowExpr(), push( new NotExpr(expr(pop())) ) ), |
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344 PowExpr() |
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345 ); |
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346 } |
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347 |
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348 Rule PowExpr() { |
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349 return Sequence( |
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350 SingleExpr(), |
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351 Optional( '^', Spaces(), PowExpr(), push( new PowExpr(expr(pop(1)),expr(pop())) ) ) |
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352 ); |
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353 } |
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354 |
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355 Rule SingleExpr() { |
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356 return FirstOf( |
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357 TableExpr(), |
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358 VarExp(), |
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359 LiteralExpr() |
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360 ); |
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361 } |
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362 |
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363 Rule TableExpr() { |
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364 return Sequence( |
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365 '{', incParens(), Spaces(), |
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366 push( new ArrayList<TableExpr.Field>() ), |
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367 push( 1.0 ), // counter |
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368 Optional( |
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369 Field(), |
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370 ZeroOrMore( |
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371 FieldSep(), |
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372 Field() |
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373 ), |
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374 Optional( FieldSep() ) |
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375 ), |
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376 '}', decParens(), |
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377 push( newTableExpr() ), |
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378 Spaces() |
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379 ); |
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380 } |
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381 |
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382 TableExpr newTableExpr() { |
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383 pop(); // counter |
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384 @SuppressWarnings("unchecked") |
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385 List<TableExpr.Field> list = (List<TableExpr.Field>)pop(); |
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386 return new TableExpr(list.toArray(new TableExpr.Field[0])); |
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387 } |
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388 |
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389 Rule FieldSep() { |
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390 return Sequence( AnyOf(",;"), Spaces() ); |
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391 } |
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392 |
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393 Rule Field() { |
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394 return FirstOf( |
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395 Sequence( |
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396 FirstOf( SubExpr(), NameExpr() ), |
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397 '=', Spaces(), Expr(), |
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398 addField() |
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399 ), |
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400 Sequence( |
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401 Expr(), |
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402 addIndexedField() |
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403 ) |
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404 ); |
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405 } |
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406 |
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407 boolean addField() { |
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408 TableExpr.Field field = new TableExpr.Field( expr(pop(1)), expr(pop()) ); |
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409 @SuppressWarnings("unchecked") |
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410 List<TableExpr.Field> list = (List<TableExpr.Field>)peek(1); |
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411 list.add(field); |
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412 return true; |
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413 } |
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414 |
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415 boolean addIndexedField() { |
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416 Expr val = expr(pop()); |
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417 double i = (Double)pop(); |
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418 TableExpr.Field field = new TableExpr.Field( new ConstExpr(new LuaNumber(i)), val ); |
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419 push( i + 1 ); |
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420 @SuppressWarnings("unchecked") |
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421 List<TableExpr.Field> list = (List<TableExpr.Field>)peek(1); |
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422 list.add(field); |
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423 return true; |
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424 } |
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425 |
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426 static Expr expr(Object obj) { |
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427 if( obj instanceof Expressions ) |
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428 return new ExpressionsExpr((Expressions)obj); |
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429 return (Expr)obj; |
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430 } |
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431 |
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432 Rule VarExp() { |
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433 return Sequence( |
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434 Var(), |
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435 makeVarExp() |
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436 ); |
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437 } |
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438 |
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439 Rule Var() { |
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440 return Sequence( |
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441 FirstOf( |
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442 Sequence( |
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443 '(', incParens(), Spaces(), Expr(), ')', decParens(), Spaces(), |
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444 push(expr(pop())), |
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445 push(null) // marker |
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446 ), |
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447 Sequence( |
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448 push(null), // marker |
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449 Name() |
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450 ) |
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451 ), |
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452 ZeroOrMore( |
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453 makeVarExp(), |
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454 FirstOf( |
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455 SubExpr(), |
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456 Sequence( '.', Spaces(), NameExpr() ), |
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457 Sequence( |
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458 Args(), |
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459 push(null) // marker |
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460 ) |
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461 ) |
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462 ) |
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463 ); |
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464 } |
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465 |
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466 boolean makeVarExp() { |
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467 Object obj2 = pop(); |
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468 if( obj2==null ) |
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469 return true; |
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470 Object obj1 = pop(); |
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471 if( obj1==null ) { |
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472 String name = (String)obj2; |
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473 int index = index(name); |
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474 if( index == -1 ) { |
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475 return push( new GetExpr( EnvExpr.INSTANCE, new ConstExpr(name) ) ); |
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476 } else { |
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477 return push( new GetLocalVar(index) ); |
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478 } |
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479 } |
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480 return push( new GetExpr( expr(obj1), expr(obj2) ) ); |
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481 } |
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482 |
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483 // function should be on top of the stack |
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484 Rule Args() { |
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485 return Sequence( |
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486 FirstOf( |
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487 Sequence( |
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488 '(', incParens(), Spaces(), Expressions(), ')', decParens(), Spaces() |
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489 ), |
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490 Sequence( |
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491 TableExpr(), |
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492 push( new ExpList.SingleExpList(expr(pop())) ) |
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493 ), |
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494 Sequence( |
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495 StringLiteral(), Spaces(), |
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496 push( new ExpList.SingleExpList(new ConstExpr(pop())) ) |
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497 ) |
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498 ), |
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499 push( new FnCall( expr(pop(1)), (Expressions)pop() ) ) |
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500 ); |
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501 } |
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502 |
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503 Rule Expressions() { |
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504 return FirstOf( |
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505 ExpList(), |
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506 push( ExpList.emptyExpList ) |
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507 ); |
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508 } |
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509 |
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510 Rule ExpList() { |
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511 Var<ExpList.Builder> builder = new Var<ExpList.Builder>(new ExpList.Builder()); |
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512 return Sequence( |
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513 Expr(), |
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514 addToExpList(builder.get()), |
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515 ZeroOrMore( |
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516 ',', Spaces(), Expr(), |
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517 addToExpList(builder.get()) |
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518 ), |
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519 push( builder.get().build() ) |
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520 ); |
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521 } |
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522 |
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523 boolean addToExpList(ExpList.Builder bld) { |
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524 Object obj = pop(); |
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525 if( obj instanceof Expressions ) { |
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526 bld.add( (Expressions)obj ); |
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527 } else { |
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528 bld.add( (Expr)obj ); |
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529 } |
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530 return true; |
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531 } |
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532 |
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533 |
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534 Rule SubExpr() { |
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535 return Sequence( '[', incParens(), Spaces(), Expr(), ']', decParens(), Spaces() ); |
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536 } |
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537 |
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538 Rule NameExpr() { |
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539 return Sequence( |
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540 Name(), |
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541 push( new ConstExpr((String)pop()) ) |
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542 ); |
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543 } |
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544 |
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545 Rule Name() { |
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546 return Sequence( |
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547 Sequence( |
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548 NameFirstChar(), |
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549 ZeroOrMore( NameChar() ) |
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550 ), |
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551 !keywords.contains(match()), |
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552 push(match()), |
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553 Spaces() |
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554 ); |
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555 } |
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556 |
17
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557 Rule NameChar() { |
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558 return FirstOf( NameFirstChar(), Digit() ); |
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559 } |
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560 |
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561 Rule NameFirstChar() { |
9
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562 return FirstOf( |
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563 CharRange('a', 'z'), |
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564 CharRange('A', 'Z'), |
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565 '_' |
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566 ); |
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567 } |
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568 |
17
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569 Rule Keyword(String keyword) { |
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570 return Sequence( |
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571 keyword, |
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572 TestNot( NameChar() ), |
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573 Spaces() |
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574 ); |
12
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575 } |
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576 |
17
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577 static final Set<String> keywords = new HashSet<String>(Arrays.asList( |
12
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578 "and", |
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579 "break", |
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580 "do", |
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581 "else", |
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582 "elseif", |
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583 "end", |
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584 "false", |
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585 "for", |
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586 "function", |
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587 "goto", |
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588 "if", |
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589 "in", |
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590 "local", |
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591 "nil", |
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592 "not", |
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593 "or", |
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594 "repeat", |
9cea1aea5eef
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595 "return", |
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596 "then", |
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597 "true", |
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598 "until", |
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599 "while" |
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600 )); |
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601 |
7
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602 Rule LiteralExpr() { |
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603 return Sequence( |
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604 Literal(), Spaces(), |
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605 push(new ConstExpr(pop())) |
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606 ); |
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607 } |
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608 |
7
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609 Rule Literal() { |
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610 return FirstOf( |
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611 NilLiteral(), |
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612 BooleanLiteral(), |
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613 NumberLiteral(), |
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614 StringLiteral() |
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615 ); |
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616 } |
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617 |
7
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618 Rule NilLiteral() { |
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619 return Sequence( "nil", push(null) ); |
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620 } |
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621 |
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622 Rule BooleanLiteral() { |
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623 return FirstOf( |
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624 Sequence( "true", push(true) ), |
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625 Sequence( "false", push(false) ) |
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626 ); |
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627 } |
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628 |
7
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629 Rule NumberLiteral() { |
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630 return Sequence( |
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631 Number(), |
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632 push(new LuaNumber((Double)pop())) |
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633 ); |
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634 } |
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635 |
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636 Rule Number() { |
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637 return FirstOf( |
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638 Sequence( |
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639 IgnoreCase("0x"), |
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640 HexNumber() |
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641 ), |
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642 Sequence( |
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643 DecNumber(), |
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644 push(Double.parseDouble(match())) |
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645 ) |
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646 ); |
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647 } |
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648 |
6
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649 Rule DecNumber() { |
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650 return FirstOf( |
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651 Sequence( |
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652 Int(), |
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653 Optional( '.', Optional(Int()) ), |
11
b7d7069fee58
add assignment statement and CmdLine
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parents:
9
diff
changeset
|
654 Exponent() |
5
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start LuaParser
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parents:
diff
changeset
|
655 ), |
11
b7d7069fee58
add assignment statement and CmdLine
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parents:
9
diff
changeset
|
656 Sequence( '.', Int(), Exponent() ) |
5
9ef0fd711101
start LuaParser
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parents:
diff
changeset
|
657 ); |
9ef0fd711101
start LuaParser
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff
changeset
|
658 } |
9ef0fd711101
start LuaParser
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff
changeset
|
659 |
11
b7d7069fee58
add assignment statement and CmdLine
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
9
diff
changeset
|
660 Rule Exponent() { |
5
9ef0fd711101
start LuaParser
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diff
changeset
|
661 return Optional( |
9ef0fd711101
start LuaParser
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parents:
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|
662 IgnoreCase('e'), |
9ef0fd711101
start LuaParser
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parents:
diff
changeset
|
663 Optional(AnyOf("+-")), |
9ef0fd711101
start LuaParser
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parents:
diff
changeset
|
664 Int() |
9ef0fd711101
start LuaParser
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff
changeset
|
665 ); |
9ef0fd711101
start LuaParser
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff
changeset
|
666 } |
9ef0fd711101
start LuaParser
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff
changeset
|
667 |
6
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more parsing
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parents:
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|
668 Rule Int() { |
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669 return OneOrMore(Digit()); |
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670 } |
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more parsing
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parents:
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|
671 |
16
2a30281ef47c
finish number literals;
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parents:
15
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|
672 Rule Digit() { |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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673 return CharRange('0', '9'); |
2a30281ef47c
finish number literals;
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parents:
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|
674 } |
2a30281ef47c
finish number literals;
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parents:
15
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|
675 |
2a30281ef47c
finish number literals;
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parents:
15
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|
676 Rule HexNumber() { |
2a30281ef47c
finish number literals;
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parents:
15
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|
677 return FirstOf( |
2a30281ef47c
finish number literals;
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parents:
15
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|
678 Sequence( |
2a30281ef47c
finish number literals;
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parents:
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|
679 HexInt(), |
2a30281ef47c
finish number literals;
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parents:
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680 push( (double)Long.parseLong(match(),16) ), |
2a30281ef47c
finish number literals;
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parents:
15
diff
changeset
|
681 Optional( '.', Optional(HexDec()) ), |
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finish number literals;
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682 HexExponent() |
2a30281ef47c
finish number literals;
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parents:
15
diff
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|
683 ), |
2a30281ef47c
finish number literals;
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parents:
15
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684 Sequence( push(0.0), '.', HexDec(), HexExponent() ) |
2a30281ef47c
finish number literals;
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parents:
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|
685 ); |
2a30281ef47c
finish number literals;
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parents:
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|
686 } |
2a30281ef47c
finish number literals;
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parents:
15
diff
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|
687 |
2a30281ef47c
finish number literals;
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parents:
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diff
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|
688 Rule HexDec() { |
2a30281ef47c
finish number literals;
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parents:
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689 return Sequence( |
2a30281ef47c
finish number literals;
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parents:
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|
690 HexInt(), |
2a30281ef47c
finish number literals;
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parents:
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691 push( (Double)pop() + (double)Long.parseLong(match(),16) / Math.pow(16,matchLength()) ) |
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finish number literals;
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parents:
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|
692 ); |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
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|
693 } |
2a30281ef47c
finish number literals;
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parents:
15
diff
changeset
|
694 |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
695 Rule HexExponent() { |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
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|
696 return Optional( |
2a30281ef47c
finish number literals;
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parents:
15
diff
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|
697 IgnoreCase('p'), |
2a30281ef47c
finish number literals;
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parents:
15
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|
698 Sequence( |
2a30281ef47c
finish number literals;
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parents:
15
diff
changeset
|
699 Optional(AnyOf("+-")), |
2a30281ef47c
finish number literals;
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parents:
15
diff
changeset
|
700 HexInt() |
2a30281ef47c
finish number literals;
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parents:
15
diff
changeset
|
701 ), |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
702 push( (Double)pop() * Math.pow(2,(double)Long.parseLong(match())) ) |
2a30281ef47c
finish number literals;
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parents:
15
diff
changeset
|
703 ); |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
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|
704 } |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
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|
705 |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
706 Rule HexInt() { |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
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|
707 return OneOrMore(Digit()); |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
708 } |
2a30281ef47c
finish number literals;
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parents:
15
diff
changeset
|
709 |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
710 |
6
a315783c9524
more parsing
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
5
diff
changeset
|
711 Rule HexDigit() { |
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more parsing
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parents:
5
diff
changeset
|
712 return FirstOf( |
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more parsing
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parents:
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diff
changeset
|
713 Digit(), |
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more parsing
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parents:
5
diff
changeset
|
714 AnyOf("abcdefABCDEF") |
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more parsing
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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diff
changeset
|
715 ); |
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more parsing
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parents:
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diff
changeset
|
716 } |
a315783c9524
more parsing
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parents:
5
diff
changeset
|
717 |
7
bca8fc5d928b
work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
6
diff
changeset
|
718 Rule StringLiteral() { |
6
a315783c9524
more parsing
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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diff
changeset
|
719 return FirstOf( |
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more parsing
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
5
diff
changeset
|
720 QuotedString('"'), |
16
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
721 QuotedString('\''), |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
722 LongString() |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
723 ); |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
724 } |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
725 |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
726 Rule LongString() { |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
727 return Sequence( |
17
09d41f7490a8
add local variables
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
16
diff
changeset
|
728 '[', |
16
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
729 ZeroOrMore('='), |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
730 nEquals(matchLength()), |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
731 '[', |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
732 ZeroOrMore( |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
733 TestNot(LongBracketsEnd()), |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
734 ANY |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
735 ), |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
736 push( match() ), |
2a30281ef47c
finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
15
diff
changeset
|
737 LongBracketsEnd() |
6
a315783c9524
more parsing
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
5
diff
changeset
|
738 ); |
a315783c9524
more parsing
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
5
diff
changeset
|
739 } |
5
9ef0fd711101
start LuaParser
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff
changeset
|
740 |
6
a315783c9524
more parsing
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
5
diff
changeset
|
741 Rule QuotedString(char quote) { |
17
09d41f7490a8
add local variables
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
16
diff
changeset
|
742 StringBuilderVar buf = new StringBuilderVar(); |
6
a315783c9524
more parsing
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
5
diff
changeset
|
743 return Sequence( |
7
bca8fc5d928b
work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
6
diff
changeset
|
744 quote, |
6
a315783c9524
more parsing
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
5
diff
changeset
|
745 ZeroOrMore( |
a315783c9524
more parsing
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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diff
changeset
|
746 FirstOf( |
a315783c9524
more parsing
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
5
diff
changeset
|
747 Sequence( |
a315783c9524
more parsing
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
5
diff
changeset
|
748 NoneOf("\\\n"+quote), |
17
09d41f7490a8
add local variables
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
16
diff
changeset
|
749 buf.append(matchedChar()) |
6
a315783c9524
more parsing
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
5
diff
changeset
|
750 ), |
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751 EscSeq(buf) |
6
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752 ) |
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753 ), |
7
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|
754 quote, |
17
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|
755 push( buf.getString() ) |
6
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756 ); |
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757 } |
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758 |
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759 Rule EscSeq(StringBuilderVar buf) { |
6
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760 return Sequence( |
7
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761 '\\', |
6
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762 FirstOf( |
17
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763 Sequence( 'a', buf.append('\u0007') ), |
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764 Sequence( 'b', buf.append('\b') ), |
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765 Sequence( 'f', buf.append('\f') ), |
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766 Sequence( 'n', buf.append('\n') ), |
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767 Sequence( 'r', buf.append('\r') ), |
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768 Sequence( 't', buf.append('\t') ), |
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|
769 Sequence( 'v', buf.append('\u000b') ), |
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770 Sequence( '\\', buf.append('\\') ), |
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771 Sequence( '"', buf.append('"') ), |
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772 Sequence( '\'', buf.append('\'') ), |
7
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773 Sequence( |
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|
774 'x', |
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|
775 Sequence( HexDigit(), HexDigit() ), |
17
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776 buf.append( (char)Integer.parseInt(match(),16) ) |
7
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|
777 ), |
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|
778 Sequence( |
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|
779 Sequence( |
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780 Digit(), |
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|
781 Optional( |
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parents:
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782 Digit(), |
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|
783 Optional( |
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784 Digit() |
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|
785 ) |
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|
786 ) |
bca8fc5d928b
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787 ), |
17
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|
788 buf.append( (char)Integer.parseInt(match()) ) |
7
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789 ) |
6
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790 ) |
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791 ); |
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792 } |
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793 |
12
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794 Rule Spaces() { |
14
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795 return ZeroOrMore( |
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796 FirstOf( |
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797 AnyOf(" \t"), |
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|
798 Comment(), |
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799 Sequence( '\\', EndOfLine() ), |
16
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800 Sequence( AnyOf("\r\n"), parens > 0 ) |
14
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801 ) |
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|
802 ); |
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803 } |
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804 |
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805 Rule Comment() { |
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806 return Sequence( |
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807 "--[", |
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808 ZeroOrMore('='), |
16
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809 nEquals(matchLength()), |
14
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|
810 '[', |
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811 ZeroOrMore( |
16
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812 TestNot(LongBracketsEnd()), |
14
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|
813 ANY |
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|
814 ), |
16
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|
815 LongBracketsEnd() |
14
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|
816 ); |
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|
817 } |
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818 |
16
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|
819 Rule LongBracketsEnd() { |
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820 return Sequence( ']', ZeroOrMore('='), nEquals==matchLength(), ']' ); |
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|
821 } |
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822 |
12
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|
823 // for debugging |
14
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824 boolean print(Object o) { |
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825 System.out.println(o); |
12
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|
826 return true; |
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|
827 } |
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|
828 |
5
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|
829 // for testing |
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|
830 public static void main(String[] args) throws Exception { |
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|
831 LuaParser parser = Parboiled.createParser(LuaParser.class); |
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|
832 while( true ) { |
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|
833 String input = new Scanner(System.in).nextLine(); |
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|
834 ParsingResult<?> result = new ReportingParseRunner(parser.Target()).run(input); |
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|
835 if( result.hasErrors() ) { |
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|
836 System.out.println("Parse Errors:\n" + ErrorUtils.printParseErrors(result)); |
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|
837 } else { |
11
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|
838 Expr expr = expr(result.resultValue); |
5
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|
839 LuaState lua = new LuaState(); |
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|
840 Object val = expr.eval(lua); |
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|
841 System.out.println("Result: "+Lua.toString(val)); |
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|
842 } |
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|
843 } |
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|
844 } |
9ef0fd711101
start LuaParser
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