Mercurial Hosting > luan
annotate core/src/luan/impl/LuanParser.java @ 652:067d9470184d
compile SetStmt and ForStmt
author | Franklin Schmidt <fschmidt@gmail.com> |
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date | Mon, 04 Apr 2016 23:26:06 -0600 |
parents | 140cc5191b7a |
children | 538b0ae08faa |
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166
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1 package luan.impl; |
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start LuaParser
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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 luan.Luan; |
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10 import luan.LuanState; |
503 | 11 import luan.LuanTable; |
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12 import luan.modules.PackageLuan; |
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13 |
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15 final class LuanParser { |
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16 |
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17 private static final class Frame { |
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18 final Frame parent; |
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19 final List<String> symbols = new ArrayList<String>(); |
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20 int stackSize = 0; |
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21 int loops = 0; |
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22 boolean isVarArg = false; |
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23 final List<String> upValueSymbols = new ArrayList<String>(); |
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24 final List<UpValue.Getter> upValueGetters = new ArrayList<UpValue.Getter>(); |
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25 |
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26 Frame(LuanTable java) { |
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27 this.parent = null; |
503 | 28 upValueSymbols.add(JAVA); |
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29 upValueGetters.add(new UpValue.ValueGetter(java)); |
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30 } |
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31 |
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32 Frame(Frame parent) { |
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33 this.parent = parent; |
503 | 34 if( upValueIndex(JAVA) != 0 ) |
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35 throw new RuntimeException(); |
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36 } |
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37 |
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38 int stackIndex(String name) { |
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39 int i = symbols.size(); |
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40 while( --i >= 0 ) { |
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41 if( symbols.get(i).equals(name) ) |
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42 return i; |
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43 } |
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44 return -1; |
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45 } |
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46 |
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47 int upValueIndex(String name) { |
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48 int i = upValueSymbols.size(); |
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49 while( --i >= 0 ) { |
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50 if( upValueSymbols.get(i).equals(name) ) |
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51 return i; |
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52 } |
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53 if( parent==null ) |
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54 return -1; |
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55 i = parent.stackIndex(name); |
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56 if( i != -1 ) { |
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57 upValueGetters.add(new UpValue.StackGetter(i)); |
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58 } else { |
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59 i = parent.upValueIndex(name); |
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60 if( i == -1 ) |
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61 return -1; |
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62 upValueGetters.add(new UpValue.NestedGetter(i)); |
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63 } |
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64 upValueSymbols.add(name); |
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65 return upValueSymbols.size() - 1; |
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66 } |
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67 |
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68 void addUpValueGetter(String name,UpValue.Getter upValueGetter) { |
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69 upValueSymbols.add(name); |
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70 upValueGetters.add(upValueGetter); |
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71 } |
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72 } |
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73 |
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74 private static class In { |
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75 static final In NOTHING = new In(false,false); |
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76 |
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77 final boolean parens; |
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78 final boolean template; |
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79 |
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80 private In(boolean parens,boolean template) { |
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81 this.parens = parens; |
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82 this.template = template; |
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83 } |
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84 |
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85 In parens() { |
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86 return parens ? this : new In(true,false); |
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87 } |
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88 |
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89 In template() { |
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90 return template ? this : new In(false,true); |
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91 } |
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92 } |
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93 |
503 | 94 private static final String JAVA = "-JAVA-"; // inaccessible from Luan |
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95 private static final String _ENV = "_ENV"; |
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96 private static final UpValue.Getter[] NO_UP_VALUE_GETTERS = new UpValue.Getter[0]; |
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97 |
645 | 98 // final LuanSource source; |
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99 private Frame frame; |
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100 private final Parser parser; |
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101 |
645 | 102 LuanParser(String sourceName,String sourceText,LuanTable env) { |
103 // this.source = source; | |
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104 this.frame = new Frame( env!=null ? env : new LuanTable() ); |
645 | 105 this.parser = new Parser(sourceName,sourceText); |
503 | 106 if( env != null ) |
107 addVar(_ENV,env); | |
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108 } |
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109 |
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110 void addVar(String name,Object value) { |
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111 frame.addUpValueGetter(name,new UpValue.ValueGetter(value)); |
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112 } |
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113 |
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114 private List<String> symbols() { |
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115 return frame.symbols; |
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116 } |
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117 |
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118 private int symbolsSize() { |
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119 return frame.symbols.size(); |
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120 } |
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121 |
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122 private void addSymbol(String name) { |
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123 frame.symbols.add(name); |
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124 if( frame.stackSize < symbolsSize() ) |
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125 frame.stackSize = symbolsSize(); |
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126 } |
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127 |
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128 private void addSymbols(List<String> names) { |
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129 frame.symbols.addAll(names); |
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130 if( frame.stackSize < symbolsSize() ) |
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131 frame.stackSize = symbolsSize(); |
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132 } |
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133 |
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134 private int stackIndex(String name) { |
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135 return frame.stackIndex(name); |
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136 } |
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137 |
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138 private void popSymbols(int n) { |
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139 List<String> symbols = frame.symbols; |
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140 while( n-- > 0 ) { |
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141 symbols.remove(symbols.size()-1); |
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142 } |
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143 } |
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144 |
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145 private int upValueIndex(String name) { |
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146 return frame.upValueIndex(name); |
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147 } |
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148 |
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149 private void incLoops() { |
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150 frame.loops++; |
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151 } |
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152 |
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153 private void decLoops() { |
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154 frame.loops--; |
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155 } |
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156 |
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157 private <T> T required(T t) throws ParseException { |
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158 if( t==null ) |
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159 throw parser.exception(); |
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160 return t; |
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161 } |
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162 |
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163 private <T> T required(T t,String msg) throws ParseException { |
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164 if( t==null ) |
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165 throw parser.exception(msg); |
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166 return t; |
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167 } |
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168 |
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169 private static Expr expr(Expressions exprs) { |
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170 if( exprs==null ) |
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171 return null; |
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172 if( exprs instanceof Expr ) |
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173 return (Expr)exprs; |
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174 return new ExpressionsExpr(exprs); |
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175 } |
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176 |
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177 private FnDef newFnDef(int start,Stmt stmt) { |
645 | 178 return new FnDef( stmt, frame.stackSize, symbolsSize(), frame.isVarArg, frame.upValueGetters.toArray(NO_UP_VALUE_GETTERS) ); |
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179 } |
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180 |
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181 FnDef Expression() throws ParseException { |
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182 Spaces(In.NOTHING); |
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183 int start = parser.begin(); |
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184 Expressions expr = exp(ExprZ(In.NOTHING)); |
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185 if( expr != null && parser.endOfInput() ) { |
645 | 186 Stmt stmt = new ReturnStmt( expr ); |
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187 return parser.success(newFnDef(start,stmt)); |
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188 } |
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189 return parser.failure(null); |
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190 } |
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191 |
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192 FnDef RequiredModule() throws ParseException { |
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193 Spaces(In.NOTHING); |
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194 int start = parser.begin(); |
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195 frame.isVarArg = true; |
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196 Stmt stmt = stmt(RequiredBlock()); |
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197 if( parser.endOfInput() ) |
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198 return parser.success(newFnDef(start,stmt)); |
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199 throw parser.exception(); |
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200 } |
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201 |
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202 private StmtString RequiredBlock() throws ParseException { |
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203 StringBuilder stmts = new StringBuilder(); |
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204 int stackStart = symbolsSize(); |
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205 Stmt(stmts); |
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206 while( StmtSep(stmts) ) { |
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207 Spaces(In.NOTHING); |
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208 Stmt(stmts); |
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209 } |
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210 int stackEnd = symbolsSize(); |
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211 popSymbols( stackEnd - stackStart ); |
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212 if( stmts.length() == 0 ) |
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213 return EMPTY_STMT; |
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214 String code = stmts.toString(); |
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215 if( stackStart < stackEnd ) |
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216 code = "" |
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217 +"try {\n" |
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218 + code |
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219 +"} finally {\n" |
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220 +" $luan.stackClear("+stackStart+","+stackEnd+");\n" |
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221 +"}\n" |
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222 ; |
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223 return new StmtString(code); |
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224 } |
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225 |
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226 private boolean StmtSep(StringBuilder stmts) throws ParseException { |
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227 parser.begin(); |
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228 if( parser.match( ';' ) ) |
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229 return parser.success(); |
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230 if( EndOfLine() ) |
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231 return parser.success(); |
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232 parser.rollback(); |
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233 StmtString stmt = stmtStr(TemplateStmt()); |
157
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234 if( stmt != null ) { |
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235 stmts.append(stmt.code); |
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236 return parser.success(); |
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237 } |
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238 return parser.failure(); |
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239 } |
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240 |
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241 private boolean EndOfLine() { |
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242 return parser.match( "\r\n" ) || parser.match( '\r' ) || parser.match( '\n' ); |
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243 } |
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244 |
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245 private void Stmt(StringBuilder stmts) throws ParseException { |
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246 if( LocalStmt(stmts) ) |
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247 return; |
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248 StmtString stmt; |
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249 if( (stmt=stmtStr(ReturnStmt())) != null |
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250 || (stmt=stmtStr(FunctionStmt())) != null |
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251 || (stmt=stmtStr(LocalFunctionStmt())) != null |
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252 || (stmt=BreakStmt()) != null |
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253 || (stmt=ForStmt()) != null |
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254 || (stmt=DoStmt()) != null |
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255 || (stmt=WhileStmt()) != null |
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256 || (stmt=RepeatStmt()) != null |
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257 || (stmt=stmtStr(IfStmt())) != null |
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258 || (stmt=SetStmt()) != null |
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259 || (stmt=ExpressionsStmt()) != null |
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260 ) { |
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261 stmts.append(stmt.code); |
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262 } |
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263 } |
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264 |
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265 private Stmt TemplateStmt() throws ParseException { |
645 | 266 parser.currentIndex(); |
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267 Expressions exprs = TemplateExpressions(In.NOTHING); |
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268 if( exprs == null ) |
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269 return null; |
645 | 270 FnCall requireCall = new FnCall( new ConstExpr(PackageLuan.requireFn), new ConstExpr("luan:Io") ); |
271 Expr stdoutExp = new IndexExpr( expr(requireCall), new ConstExpr("stdout") ); | |
272 Expr writeExp = new IndexExpr( stdoutExp, new ConstExpr("write") ); | |
273 FnCall writeCall = new FnCall( writeExp, exprs ); | |
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274 return new ExpressionsStmt(writeCall); |
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275 } |
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276 |
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277 private Expressions TemplateExpressions(In in) throws ParseException { |
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278 if( in.template ) |
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279 return null; |
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280 int start = parser.begin(); |
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281 if( !parser.match( "%>" ) ) |
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282 return parser.failure(null); |
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283 EndOfLine(); |
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284 In inTemplate = in.template(); |
154
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285 List<Expressions> builder = new ArrayList<Expressions>(); |
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286 while(true) { |
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287 if( parser.match( "<%=" ) ) { |
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288 Spaces(inTemplate); |
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289 builder.add( exp(RequiredExpr(inTemplate)) ); |
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290 RequiredMatch( "%>" ); |
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291 } else if( parser.match( "<%" ) ) { |
157
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292 Spaces(inTemplate); |
154
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293 return parser.success(ExpList.build(builder)); |
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294 } else { |
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295 int i = parser.currentIndex(); |
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296 do { |
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297 if( parser.match( "%>" ) ) |
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298 throw parser.exception("'%>' unexpected"); |
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299 if( !parser.anyChar() ) |
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300 throw parser.exception("Unclosed template expression"); |
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301 } while( !parser.test( "<%" ) ); |
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302 String match = parser.textFrom(i); |
645 | 303 builder.add( new ConstExpr(match) ); |
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304 } |
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305 } |
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306 } |
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307 |
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308 private Stmt ReturnStmt() throws ParseException { |
645 | 309 parser.begin(); |
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310 if( !Keyword("return",In.NOTHING) ) |
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311 return parser.failure(null); |
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312 Expressions exprs = ExpList(In.NOTHING); |
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313 if( exprs==null ) |
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314 exprs = ExpList.emptyExpList; |
645 | 315 return parser.success( new ReturnStmt(exprs) ); |
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316 } |
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317 |
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318 private Stmt FunctionStmt() throws ParseException { |
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319 parser.begin(); |
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320 if( !Keyword("function",In.NOTHING) ) |
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321 return parser.failure(null); |
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322 |
645 | 323 parser.currentIndex(); |
324 Var var = nameVar(RequiredName(In.NOTHING)); | |
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325 while( parser.match( '.' ) ) { |
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326 Spaces(In.NOTHING); |
636 | 327 Expr exp = NameExpr(In.NOTHING); |
328 if( exp==null ) | |
329 return parser.failure(null); | |
645 | 330 var = indexVar( expr(var.expr()), exp ); |
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331 } |
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332 Settable fnName = var.settable(); |
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333 |
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334 FnDef fnDef = RequiredFunction(In.NOTHING); |
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335 return parser.success( new SetStmt(fnName,fnDef) ); |
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336 } |
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337 |
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338 private Stmt LocalFunctionStmt() throws ParseException { |
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339 parser.begin(); |
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340 if( !(Keyword("local",In.NOTHING) && Keyword("function",In.NOTHING)) ) |
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341 return parser.failure(null); |
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342 String name = RequiredName(In.NOTHING); |
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343 addSymbol( name ); |
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344 FnDef fnDef = RequiredFunction(In.NOTHING); |
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345 return parser.success( new SetStmt( new SetLocalVar(symbolsSize()-1), fnDef ) ); |
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346 } |
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347 |
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348 private StmtString BreakStmt() throws ParseException { |
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349 parser.begin(); |
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350 if( !Keyword("break",In.NOTHING) ) |
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351 return parser.failure(null); |
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352 if( frame.loops <= 0 ) |
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353 throw parser.exception("'break' outside of loop"); |
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354 // return parser.success( new StmtString("break;\n") ); |
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355 return parser.success( new StmtString(new BreakStmt()) ); |
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356 } |
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357 |
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358 int forCounter = 0; |
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359 |
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360 private StmtString ForStmt() throws ParseException { |
645 | 361 parser.begin(); |
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362 int stackStart = symbolsSize(); |
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363 if( !Keyword("for",In.NOTHING) ) |
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364 return parser.failure(null); |
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365 List<String> names = RequiredNameList(In.NOTHING); |
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366 if( !Keyword("in",In.NOTHING) ) |
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367 return parser.failure(null); |
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368 ExpString expr = RequiredExpr(In.NOTHING).expr(); |
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369 RequiredKeyword("do",In.NOTHING); |
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370 |
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371 SetLocalVar[] vars = new SetLocalVar[names.size()]; |
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372 for( int i=0; i<vars.length; i++ ) { |
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373 vars[i] = new SetLocalVar(stackStart+i); |
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374 } |
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375 String varsStr = varsToString(vars); |
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376 |
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377 ExpString firstVar = new ExpString(new GetLocalVar(stackStart)); |
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378 addSymbols(names); |
652
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379 StmtString loop = RequiredLoopBlock(); |
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380 RequiredKeyword("end",In.NOTHING); |
652
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381 String fnVar = "$fn"+ ++forCounter; |
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382 String code = "" |
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383 +"try {\n" |
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384 +"LuanFunction "+fnVar+" = $Luan.checkFunction(" + expr.code + ");\n" |
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385 +"while(true) {\n" |
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386 +"for( int i="+stackStart+"; i<"+symbolsSize()+"; i++ ) {\n" |
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387 +"$luan.stackSet(i,null);\n" |
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388 +"}\n" |
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389 +"$Luan.set($luan," + varsStr + ", "+fnVar+".call($luan) );\n" |
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390 +"if( " + firstVar.code + "==null ) break;\n" |
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391 + loop.code |
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392 +"}" |
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393 +"} catch(BreakException e) {\n" |
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394 +"} finally {\n" |
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395 +"$luan.stackClear("+stackStart+","+symbolsSize()+");\n" |
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396 +"}\n" |
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397 ; |
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398 StmtString stmt = new StmtString(code); |
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399 popSymbols( symbolsSize() - stackStart ); |
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400 return parser.success(stmt); |
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401 } |
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402 |
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403 private StmtString DoStmt() throws ParseException { |
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404 parser.begin(); |
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405 if( !Keyword("do",In.NOTHING) ) |
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406 return parser.failure(null); |
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407 StmtString stmt = RequiredBlock(); |
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408 RequiredKeyword("end",In.NOTHING); |
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409 return parser.success(stmt); |
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410 } |
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411 |
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412 private boolean LocalStmt(StringBuilder stmts) throws ParseException { |
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413 parser.begin(); |
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414 if( !Keyword("local",In.NOTHING) ) |
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415 return parser.failure(); |
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416 List<String> names = NameList(In.NOTHING); |
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417 if( names==null ) { |
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418 if( Keyword("function",In.NOTHING) ) |
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419 return parser.failure(); // handled later |
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420 throw parser.exception("Invalid local statement"); |
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421 } |
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422 if( parser.match( '=' ) ) { |
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423 Spaces(In.NOTHING); |
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424 ExpString values = ExpStringList(In.NOTHING); |
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425 if( values==null ) |
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426 throw parser.exception("Expressions expected"); |
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427 SetLocalVar[] vars = new SetLocalVar[names.size()]; |
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428 int stackStart = symbolsSize(); |
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429 for( int i=0; i<vars.length; i++ ) { |
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430 vars[i] = new SetLocalVar(stackStart+i); |
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431 } |
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432 String varsStr = varsToString(vars); |
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433 String code = "$Luan.set($luan," + varsStr + "," + values.code + ");\n"; |
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434 stmts.append(code); |
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435 } |
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436 addSymbols(names); |
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437 return parser.success(); |
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438 } |
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439 |
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440 private List<String> RequiredNameList(In in) throws ParseException { |
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441 parser.begin(); |
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442 List<String> names = NameList(in); |
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443 if( names==null ) |
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444 throw parser.exception("Name expected"); |
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445 return parser.success(names); |
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446 } |
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447 |
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448 private List<String> NameList(In in) throws ParseException { |
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449 String name = Name(in); |
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450 if( name==null ) |
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451 return null; |
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452 List<String> names = new ArrayList<String>(); |
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453 names.add(name); |
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454 while( (name=anotherName(in)) != null ) { |
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455 names.add(name); |
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456 } |
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457 return names; |
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458 } |
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459 |
139
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460 private String anotherName(In in) throws ParseException { |
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461 parser.begin(); |
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462 if( !parser.match( ',' ) ) |
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463 return parser.failure(null); |
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464 Spaces(in); |
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465 String name = Name(in); |
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466 if( name==null ) |
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467 return parser.failure(null); |
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468 return parser.success(name); |
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469 } |
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470 |
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471 private StmtString WhileStmt() throws ParseException { |
645 | 472 parser.begin(); |
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473 if( !Keyword("while",In.NOTHING) ) |
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474 return parser.failure(null); |
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475 ExpString cnd = RequiredExpr(In.NOTHING).expr(); |
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476 RequiredKeyword("do",In.NOTHING); |
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477 StmtString loop = RequiredLoopBlock(); |
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478 RequiredKeyword("end",In.NOTHING); |
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479 String code = "" |
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480 +"try {\n" |
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481 +" while( $Luan.checkBoolean(" + cnd.code + ") ) {\n" |
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482 + loop.code |
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483 +" }\n" |
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484 +"} catch(BreakException e) {}\n" |
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485 ; |
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486 return parser.success( new StmtString(code) ); |
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487 } |
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488 |
651
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489 private StmtString RepeatStmt() throws ParseException { |
645 | 490 parser.begin(); |
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491 if( !Keyword("repeat",In.NOTHING) ) |
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492 return parser.failure(null); |
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493 StmtString loop =RequiredLoopBlock(); |
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494 RequiredKeyword("until",In.NOTHING); |
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495 ExpString cnd = RequiredExpr(In.NOTHING).expr(); |
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496 String code = "" |
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497 +"try {\n" |
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498 +" do {\n" |
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499 + loop.code |
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500 +" } while( !$Luan.checkBoolean(" + cnd.code + ") );\n" |
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501 +"} catch(BreakException e) {}\n" |
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502 ; |
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503 return parser.success( new StmtString(code) ); |
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504 } |
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505 |
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506 private StmtString RequiredLoopBlock() throws ParseException { |
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507 incLoops(); |
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508 StmtString stmt = RequiredBlock(); |
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509 decLoops(); |
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510 return stmt; |
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511 } |
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512 |
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513 private Stmt IfStmt() throws ParseException { |
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514 parser.begin(); |
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515 if( !Keyword("if",In.NOTHING) ) |
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516 return parser.failure(null); |
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517 return parser.success( IfStmt2() ); |
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518 } |
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519 |
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520 private Stmt IfStmt2() throws ParseException { |
645 | 521 parser.currentIndex(); |
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522 Expr cnd = expr(exp(RequiredExpr(In.NOTHING))); |
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523 RequiredKeyword("then",In.NOTHING); |
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524 Stmt thenBlock = stmt(RequiredBlock()); |
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525 Stmt elseBlock; |
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526 if( Keyword("elseif",In.NOTHING) ) { |
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527 elseBlock = IfStmt2(); |
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528 } else { |
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529 elseBlock = Keyword("else",In.NOTHING) ? stmt(RequiredBlock()) : Stmt.EMPTY; |
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530 RequiredKeyword("end",In.NOTHING); |
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531 } |
645 | 532 return new IfStmt(cnd,thenBlock,elseBlock); |
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533 } |
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534 |
652
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535 private StmtString SetStmt() throws ParseException { |
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536 parser.begin(); |
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537 List<Settable> vars = new ArrayList<Settable>(); |
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538 Settable s = SettableVar(); |
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539 if( s == null ) |
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540 return parser.failure(null); |
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541 vars.add(s); |
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542 while( parser.match( ',' ) ) { |
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543 Spaces(In.NOTHING); |
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544 s = SettableVar(); |
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545 if( s == null ) |
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546 return parser.failure(null); |
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547 vars.add(s); |
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548 } |
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549 if( !parser.match( '=' ) ) |
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550 return parser.failure(null); |
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551 Spaces(In.NOTHING); |
652
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552 ExpString values = ExpStringList(In.NOTHING); |
104
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553 if( values==null ) |
274
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554 // throw parser.exception("Expressions expected"); |
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555 return parser.failure(null); |
652
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556 String varsStr = varsToString(vars.toArray(new Settable[0])); |
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557 String code = "$Luan.set($luan," + varsStr + "," + values.code + "); "; |
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558 return parser.success( new StmtString(code) ); |
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559 //qqq |
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560 } |
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561 |
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562 private static String varsToString(Settable[] vars) { |
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563 StringBuilder sb = new StringBuilder(); |
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564 sb.append( "new Settable[]{" ); |
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565 for( Settable v : vars ) { |
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566 sb.append( new SettableString(v).code ).append( ',' ); |
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567 } |
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568 sb.append( "}" ); |
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569 return sb.toString(); |
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570 } |
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571 |
651
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572 private StmtString ExpressionsStmt() throws ParseException { |
104
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573 parser.begin(); |
651
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574 ExpString exp = ExprZ(In.NOTHING); |
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575 if( exp != null && exp.isStmt ) { |
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576 String code = exp.code; |
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577 if( exp.isExpr ) |
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578 code = "$Luan.nop(" + code + ")"; |
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579 code += ";\n"; |
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580 return parser.success( new StmtString(code) ); |
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581 } |
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582 return parser.failure(null); |
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583 } |
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584 |
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585 private Settable SettableVar() throws ParseException { |
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586 int start = parser.begin(); |
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587 Var var = VarZ(In.NOTHING); |
104
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588 if( var==null ) |
155
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589 return parser.failure(null); |
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590 return parser.success( var.settable() ); |
104
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591 } |
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592 |
650
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593 private ExpString RequiredExpr(In in) throws ParseException { |
129
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594 parser.begin(); |
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595 return parser.success(required(ExprZ(in),"Bad expression")); |
104
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596 } |
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597 |
650
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|
598 private ExpString ExprZ(In in) throws ParseException { |
449 | 599 return OrExpr(in); |
19
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600 } |
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601 |
650
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602 private ExpString OrExpr(In in) throws ParseException { |
645 | 603 parser.begin(); |
650
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604 ExpString exp = AndExpr(in); |
104
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605 if( exp==null ) |
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606 return parser.failure(null); |
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607 while( Keyword("or",in) ) { |
650
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608 exp = exp.expr(); |
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609 ExpString exp2 = required(RelExpr(in)).expr(); |
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610 String code = "($Luan.cnd($cnd = " + exp.code + ") ? $cnd : (" + exp2.code + "))"; |
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611 exp = new ExpString(code,true,true); |
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612 } |
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613 return parser.success(exp); |
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614 } |
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615 |
650
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616 private ExpString AndExpr(In in) throws ParseException { |
645 | 617 parser.begin(); |
650
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618 ExpString exp = RelExpr(in); |
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619 if( exp==null ) |
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620 return parser.failure(null); |
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621 while( Keyword("and",in) ) { |
650
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622 exp = exp.expr(); |
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623 ExpString exp2 = required(RelExpr(in)).expr(); |
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624 String code = "($Luan.cnd($cnd = " + exp.code + ") ? (" + exp2.code + ") : $cnd)"; |
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625 exp = new ExpString(code,true,true); |
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626 } |
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627 return parser.success(exp); |
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628 } |
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629 |
650
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630 private ExpString RelExpr(In in) throws ParseException { |
645 | 631 parser.begin(); |
650
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632 ExpString exp = ConcatExpr(in); |
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633 if( exp==null ) |
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634 return parser.failure(null); |
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635 while(true) { |
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636 if( parser.match("==") ) { |
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637 Spaces(in); |
650
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638 exp = exp.expr(); |
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639 ExpString exp2 = required(ConcatExpr(in)).expr(); |
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640 String code = "$Luan.eq($luan," + exp.code + "," + exp2.code + ")"; |
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641 exp = new ExpString(code,true,false); |
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642 } else if( parser.match("~=") ) { |
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643 Spaces(in); |
650
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644 exp = exp.expr(); |
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645 ExpString exp2 = required(ConcatExpr(in)).expr(); |
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646 String code = "!$Luan.eq($luan," + exp.code + "," + exp2.code + ")"; |
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647 exp = new ExpString(code,true,false); |
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648 } else if( parser.match("<=") ) { |
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649 Spaces(in); |
650
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650 exp = exp.expr(); |
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651 ExpString exp2 = required(ConcatExpr(in)).expr(); |
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652 String code = "$Luan.le($luan," + exp.code + "," + exp2.code + ")"; |
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653 exp = new ExpString(code,true,false); |
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654 } else if( parser.match(">=") ) { |
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655 Spaces(in); |
650
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656 exp = exp.expr(); |
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657 ExpString exp2 = required(ConcatExpr(in)).expr(); |
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658 String code = "$Luan.le($luan," + exp2.code + "," + exp.code + ")"; |
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659 exp = new ExpString(code,true,false); |
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660 } else if( parser.match("<") ) { |
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661 Spaces(in); |
650
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662 exp = exp.expr(); |
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663 ExpString exp2 = required(ConcatExpr(in)).expr(); |
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664 String code = "$Luan.lt($luan," + exp.code + "," + exp2.code + ")"; |
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665 exp = new ExpString(code,true,false); |
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666 } else if( parser.match(">") ) { |
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667 Spaces(in); |
650
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668 exp = exp.expr(); |
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669 ExpString exp2 = required(ConcatExpr(in)).expr(); |
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670 String code = "$Luan.lt($luan," + exp2.code + "," + exp.code + ")"; |
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671 exp = new ExpString(code,true,false); |
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672 } else |
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673 break; |
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674 } |
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675 return parser.success(exp); |
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676 } |
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677 |
650
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678 private ExpString ConcatExpr(In in) throws ParseException { |
645 | 679 parser.begin(); |
650
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680 ExpString exp = SumExpr(in); |
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681 if( exp==null ) |
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682 return parser.failure(null); |
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683 if( parser.match("..") ) { |
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684 Spaces(in); |
650
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685 exp = exp.expr(); |
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686 ExpString exp2 = required(ConcatExpr(in)).expr(); |
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687 String code = "$Luan.concat($luan," + exp.code + "," + exp2.code + ")"; |
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688 exp = new ExpString(code,true,false); |
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689 } |
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690 return parser.success(exp); |
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691 } |
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692 |
650
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693 private ExpString SumExpr(In in) throws ParseException { |
645 | 694 parser.begin(); |
650
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695 ExpString exp = TermExpr(in); |
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696 if( exp==null ) |
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697 return parser.failure(null); |
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698 while(true) { |
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699 if( parser.match('+') ) { |
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700 Spaces(in); |
650
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701 exp = exp.expr(); |
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702 ExpString exp2 = required(TermExpr(in)).expr(); |
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703 String code = "$Luan.add($luan," + exp.code + "," + exp2.code + ")"; |
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704 exp = new ExpString(code,true,false); |
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705 } else if( Minus() ) { |
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706 Spaces(in); |
650
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707 exp = exp.expr(); |
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708 ExpString exp2 = required(TermExpr(in)).expr(); |
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709 String code = "$Luan.sub($luan," + exp.code + "," + exp2.code + ")"; |
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710 exp = new ExpString(code,true,false); |
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711 } else |
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712 break; |
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713 } |
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714 return parser.success(exp); |
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715 } |
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716 |
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717 private boolean Minus() { |
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718 parser.begin(); |
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|
719 return parser.match('-') && !parser.match('-') ? parser.success() : parser.failure(); |
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|
720 } |
9cea1aea5eef
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721 |
650
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722 private ExpString TermExpr(In in) throws ParseException { |
645 | 723 parser.begin(); |
650
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724 ExpString exp = UnaryExpr(in); |
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725 if( exp==null ) |
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|
726 return parser.failure(null); |
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727 while(true) { |
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728 if( parser.match('*') ) { |
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729 Spaces(in); |
650
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730 exp = exp.expr(); |
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731 ExpString exp2 = required(UnaryExpr(in)).expr(); |
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732 String code = "$Luan.mul($luan," + exp.code + "," + exp2.code + ")"; |
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733 exp = new ExpString(code,true,false); |
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734 } else if( parser.match('/') ) { |
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735 Spaces(in); |
650
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736 exp = exp.expr(); |
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737 ExpString exp2 = required(UnaryExpr(in)).expr(); |
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738 String code = "$Luan.div($luan," + exp.code + "," + exp2.code + ")"; |
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739 exp = new ExpString(code,true,false); |
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740 } else if( Mod() ) { |
129
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741 Spaces(in); |
650
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|
742 exp = exp.expr(); |
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743 ExpString exp2 = required(UnaryExpr(in)).expr(); |
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744 String code = "$Luan.mod($luan," + exp.code + "," + exp2.code + ")"; |
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745 exp = new ExpString(code,true,false); |
104
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746 } else |
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|
747 break; |
17
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748 } |
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749 return parser.success(exp); |
17
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750 } |
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751 |
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752 private boolean Mod() { |
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753 parser.begin(); |
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754 return parser.match('%') && !parser.match('>') ? parser.success() : parser.failure(); |
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755 } |
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756 |
649
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757 private ExpString UnaryExpr(In in) throws ParseException { |
645 | 758 parser.begin(); |
104
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|
759 if( parser.match('#') ) { |
129
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760 Spaces(in); |
649
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|
761 ExpString exp = required(UnaryExpr(in)).expr(); |
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762 String code = "$Luan.len($luan," + exp.code + ")"; |
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763 exp = new ExpString(code,true,false); |
648
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645
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|
764 return parser.success(exp); |
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765 } |
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|
766 if( Minus() ) { |
129
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767 Spaces(in); |
649
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768 ExpString exp = required(UnaryExpr(in)).expr(); |
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769 String code = "$Luan.unm($luan," + exp.code + ")"; |
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|
770 exp = new ExpString(code,true,false); |
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|
771 return parser.success(exp); |
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772 } |
129
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773 if( Keyword("not",in) ) { |
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774 Spaces(in); |
649
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|
775 ExpString exp = required(UnaryExpr(in)).expr(); |
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|
776 String code = "$Luan.not(" + exp.code + ")"; |
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|
777 exp = new ExpString(code,true,false); |
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|
778 return parser.success(exp); |
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779 } |
650
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|
780 ExpString exp = PowExpr(in); |
104
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781 if( exp==null ) |
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782 return parser.failure(null); |
650
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|
783 return parser.success(exp); |
104
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784 } |
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785 |
650
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|
786 private ExpString PowExpr(In in) throws ParseException { |
645 | 787 parser.begin(); |
154
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788 Expressions exp = SingleExpr(in); |
104
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789 if( exp==null ) |
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790 return parser.failure(null); |
650
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791 ExpString exp1 = new ExpString(exp); |
104
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792 if( parser.match('^') ) { |
129
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793 Spaces(in); |
650
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794 ExpString exp2 = required(PowExpr(in)); |
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795 String code = "$Luan.pow($luan," + exp1.code + "," + exp2.code + ")"; |
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|
796 exp1 = new ExpString(code,true,false); |
104
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797 } |
650
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|
798 return parser.success(exp1); |
14
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799 } |
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800 |
154
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801 private Expressions SingleExpr(In in) throws ParseException { |
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802 parser.begin(); |
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803 Expressions exp; |
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804 exp = FunctionExpr(in); |
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805 if( exp != null ) |
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806 return parser.success(exp); |
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807 exp = VarExp(in); |
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808 if( exp != null ) |
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809 return parser.success(exp); |
449 | 810 exp = VarArgs(in); |
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811 if( exp != null ) |
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812 return parser.success(exp); |
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813 return parser.failure(null); |
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814 } |
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815 |
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816 private Expr FunctionExpr(In in) throws ParseException { |
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817 if( !Keyword("function",in) ) |
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818 return null; |
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819 return RequiredFunction(in); |
20
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820 } |
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821 |
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822 private FnDef RequiredFunction(In in) throws ParseException { |
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823 int start = parser.begin(); |
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824 RequiredMatch('('); |
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825 In inParens = in.parens(); |
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826 Spaces(inParens); |
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827 frame = new Frame(frame); |
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828 List<String> names = NameList(in); |
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829 if( names != null ) { |
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830 addSymbols(names); |
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831 if( parser.match(',') ) { |
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832 Spaces(inParens); |
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833 if( !parser.match("...") ) |
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834 throw parser.exception(); |
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835 Spaces(inParens); |
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836 frame.isVarArg = true; |
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837 } |
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838 } else if( parser.match("...") ) { |
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839 Spaces(inParens); |
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840 frame.isVarArg = true; |
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841 } |
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842 RequiredMatch(')'); |
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843 Spaces(in); |
651
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844 Stmt block = stmt(RequiredBlock()); |
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845 RequiredKeyword("end",in); |
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846 FnDef fnDef = newFnDef(start,block); |
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847 frame = frame.parent; |
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848 return parser.success(fnDef); |
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849 } |
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850 |
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851 private VarArgs VarArgs(In in) throws ParseException { |
645 | 852 parser.begin(); |
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853 if( !frame.isVarArg || !parser.match("...") ) |
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854 return parser.failure(null); |
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855 Spaces(in); |
645 | 856 return parser.success( new VarArgs() ); |
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857 } |
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858 |
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859 private Expr TableExpr(In in) throws ParseException { |
645 | 860 parser.begin(); |
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861 if( !parser.match('{') ) |
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862 return parser.failure(null); |
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863 Spaces(In.NOTHING); |
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864 List<TableExpr.Field> fields = new ArrayList<TableExpr.Field>(); |
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865 List<Expressions> builder = new ArrayList<Expressions>(); |
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866 Field(fields,builder); |
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867 while( FieldSep() ) { |
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868 Spaces(In.NOTHING); |
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869 Field(fields,builder); |
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870 } |
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871 Expressions exp = TemplateExpressions(In.NOTHING); |
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872 if( exp != null ) |
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873 builder.add(exp); |
107
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874 if( !parser.match('}') ) |
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875 throw parser.exception("Expected table element or '}'"); |
203
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876 Spaces(in); |
645 | 877 return parser.success( new TableExpr( fields.toArray(new TableExpr.Field[0]), ExpList.build(builder) ) ); |
104
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878 } |
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879 |
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880 private boolean FieldSep() throws ParseException { |
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881 return parser.anyOf(",;") || EndOfLine(); |
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882 } |
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883 |
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884 private boolean Field(List<TableExpr.Field> fields,List<Expressions> builder) throws ParseException { |
104
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885 parser.begin(); |
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886 Expr exp = SubExpr(In.NOTHING); |
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887 if( exp==null ) |
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888 exp = NameExpr(In.NOTHING); |
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889 if( exp!=null && parser.match('=') ) { |
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890 Spaces(In.NOTHING); |
650
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891 fields.add( new TableExpr.Field( exp, required(expr(exp(ExprZ(In.NOTHING)))) ) ); |
104
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892 return parser.success(); |
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893 } |
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894 parser.rollback(); |
650
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895 Expressions exprs = exp(ExprZ(In.NOTHING)); |
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896 if( exprs != null ) { |
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897 builder.add(exprs); |
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898 return parser.success(); |
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899 } |
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900 return parser.failure(); |
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901 } |
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902 |
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903 private Expressions VarExp(In in) throws ParseException { |
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904 Var var = VarZ(in); |
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905 return var==null ? null : var.expr(); |
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906 } |
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907 |
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908 private Var VarZ(In in) throws ParseException { |
645 | 909 parser.begin(); |
910 Var var = VarStart(in); | |
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911 if( var==null ) |
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912 return parser.failure(null); |
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913 Var var2; |
645 | 914 while( (var2=Var2(in,var.expr())) != null ) { |
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915 var = var2; |
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916 } |
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917 return parser.success(var); |
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918 } |
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919 |
645 | 920 private Var VarStart(In in) throws ParseException { |
206
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921 if( parser.match('(') ) { |
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922 In inParens = in.parens(); |
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923 Spaces(inParens); |
650
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924 Expr exp = expr(exp(RequiredExpr(inParens))); |
206
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925 RequiredMatch(')'); |
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926 Spaces(in); |
206
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927 return exprVar(exp); |
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928 } |
206
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929 String name = Name(in); |
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930 if( name != null ) |
645 | 931 return nameVar(name); |
206
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932 Expressions exp; |
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933 exp = TableExpr(in); |
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934 if( exp != null ) |
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935 return exprVar(exp); |
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936 exp = Literal(in); |
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937 if( exp != null ) |
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938 return exprVar(exp); |
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939 return null; |
21
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940 } |
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941 |
645 | 942 private Var Var2(In in,Expressions exp1) throws ParseException { |
104
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943 parser.begin(); |
129
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944 Expr exp2 = SubExpr(in); |
104
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945 if( exp2 != null ) |
645 | 946 return parser.success(indexVar(expr(exp1),exp2)); |
104
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947 if( parser.match('.') ) { |
129
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948 Spaces(in); |
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949 exp2 = NameExpr(in); |
104
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950 if( exp2!=null ) |
645 | 951 return parser.success(indexVar(expr(exp1),exp2)); |
636 | 952 return parser.failure(null); |
104
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953 } |
652
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954 FnCall fnCall = Args( in, expr(exp1), new ArrayList<ExpString>() ); |
206
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955 if( fnCall != null ) |
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956 return parser.success(exprVar(fnCall)); |
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957 return parser.failure(null); |
9
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958 } |
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959 |
503 | 960 private interface Var { |
961 public Expressions expr() throws ParseException; | |
962 public Settable settable() throws ParseException; | |
963 } | |
964 | |
104
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965 private Expr env() { |
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966 int index = stackIndex(_ENV); |
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967 if( index != -1 ) |
645 | 968 return new GetLocalVar(index); |
34
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969 index = upValueIndex(_ENV); |
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970 if( index != -1 ) |
645 | 971 return new GetUpVar(index); |
503 | 972 return null; |
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973 } |
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974 |
645 | 975 private Var nameVar(final String name) { |
104
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976 return new Var() { |
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977 |
503 | 978 public Expr expr() throws ParseException { |
104
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979 int index = stackIndex(name); |
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980 if( index != -1 ) |
645 | 981 return new GetLocalVar(index); |
104
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982 index = upValueIndex(name); |
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983 if( index != -1 ) |
645 | 984 return new GetUpVar(index); |
503 | 985 Expr envExpr = env(); |
986 if( envExpr != null ) | |
645 | 987 return new IndexExpr( envExpr, new ConstExpr(name) ); |
503 | 988 parser.failure(null); |
989 throw parser.exception("name '"+name+"' not defined"); | |
104
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990 } |
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991 |
503 | 992 public Settable settable() throws ParseException { |
104
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993 int index = stackIndex(name); |
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994 if( index != -1 ) |
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995 return new SetLocalVar(index); |
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996 index = upValueIndex(name); |
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997 if( index != -1 ) |
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998 return new SetUpVar(index); |
503 | 999 Expr envExpr = env(); |
1000 if( envExpr != null ) | |
645 | 1001 return new SetTableEntry( envExpr, new ConstExpr(name) ); |
503 | 1002 parser.failure(null); |
1003 throw parser.exception("name '"+name+"' not defined"); | |
104
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1004 } |
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1005 }; |
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1006 } |
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1007 |
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1008 private Var exprVar(final Expressions expr) { |
104
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1009 return new Var() { |
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1010 |
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1011 public Expressions expr() { |
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1012 return expr; |
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1013 } |
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1014 |
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1015 public Settable settable() { |
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1016 return null; |
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1017 } |
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1018 }; |
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1019 } |
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1020 |
645 | 1021 private Var indexVar(final Expr table,final Expr key) { |
104
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1022 return new Var() { |
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1023 |
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1024 public Expr expr() { |
645 | 1025 return new IndexExpr( table, key ); |
104
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1026 } |
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1027 |
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1028 public Settable settable() { |
645 | 1029 return new SetTableEntry(table,key); |
104
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1030 } |
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1031 }; |
9
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1032 } |
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1033 |
652
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1034 private FnCall Args(In in,Expr fn,List<ExpString> builder) throws ParseException { |
104
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1035 parser.begin(); |
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1036 return args(in,builder) |
652
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1037 ? parser.success( new FnCall( fn, ExpList.build(expList(builder)) ) ) |
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1038 : parser.failure((FnCall)null); |
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1039 } |
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1040 |
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1041 private boolean args(In in,List<ExpString> builder) throws ParseException { |
645 | 1042 parser.begin(); |
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1043 if( parser.match('(') ) { |
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1044 In inParens = in.parens(); |
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1045 Spaces(inParens); |
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1046 ExpList(inParens,builder); // optional |
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1047 if( !parser.match(')') ) |
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1048 throw parser.exception("Expression or ')' expected"); |
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1049 Spaces(in); |
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1050 return parser.success(); |
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1051 } |
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1052 Expr exp = TableExpr(in); |
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1053 if( exp != null ) { |
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1054 builder.add(new ExpString(exp)); |
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1055 return parser.success(); |
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1056 } |
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1057 String s = StringLiteral(in); |
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1058 if( s != null ) { |
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1059 builder.add( new ExpString(new ConstExpr(s)) ); |
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1060 return parser.success(); |
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1061 } |
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1062 /* |
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1063 Expressions exps = TemplateExpressions(in); |
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1064 if( exps != null ) { |
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1065 builder.add(exps); |
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1066 return parser.success(); |
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1067 } |
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1068 */ |
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1069 return parser.failure(); |
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1070 } |
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1071 |
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1072 private Expressions ExpList(In in) throws ParseException { |
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1073 List<ExpString> builder = new ArrayList<ExpString>(); |
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1074 return ExpList(in,builder) ? ExpList.build(expList(builder)) : null; |
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1075 } |
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1076 |
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1077 private ExpString ExpStringList(In in) throws ParseException { |
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1078 List<ExpString> builder = new ArrayList<ExpString>(); |
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1079 return ExpList(in,builder) ? exp(builder) : null; |
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1080 } |
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1081 |
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1082 private boolean ExpList(In in,List<ExpString> builder) throws ParseException { |
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1083 parser.begin(); |
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1084 Expressions exp = TemplateExpressions(in); |
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1085 if( exp != null ) { |
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1086 builder.add(new ExpString(exp)); |
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1087 return parser.success(); |
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1088 } |
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1089 ExpString es = ExprZ(in); |
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1090 if( es==null ) |
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1091 return parser.failure(); |
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1092 builder.add(es); |
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1093 while( parser.match(',') ) { |
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1094 Spaces(in); |
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1095 exp = TemplateExpressions(in); |
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1096 if( exp != null ) { |
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1097 builder.add(new ExpString(exp)); |
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1098 return parser.success(); |
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1099 } |
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1100 builder.add( RequiredExpr(in) ); |
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1101 } |
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1102 return parser.success(); |
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1103 } |
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1104 |
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1105 private Expr SubExpr(In in) throws ParseException { |
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1106 parser.begin(); |
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1107 if( !parser.match('[') || parser.test("[") || parser.test("=") ) |
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1108 return parser.failure(null); |
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1109 Spaces(In.NOTHING); |
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1110 Expr exp = expr(exp(RequiredExpr(In.NOTHING))); |
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1111 RequiredMatch(']'); |
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1112 Spaces(in); |
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1113 return parser.success(exp); |
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1114 } |
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1115 |
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1116 private Expr NameExpr(In in) throws ParseException { |
645 | 1117 parser.begin(); |
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1118 String name = Name(in); |
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1119 if( name==null ) |
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1120 return parser.failure(null); |
645 | 1121 return parser.success(new ConstExpr(name)); |
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1122 } |
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1123 |
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1124 private String RequiredName(In in) throws ParseException { |
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1125 parser.begin(); |
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1126 String name = Name(in); |
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1127 if( name==null ) |
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1128 throw parser.exception("Name expected"); |
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1129 return parser.success(name); |
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1130 } |
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1131 |
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1132 private String Name(In in) throws ParseException { |
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1133 int start = parser.begin(); |
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1134 if( !NameFirstChar() ) |
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1135 return parser.failure(null); |
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1136 while( NameChar() ); |
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1137 String match = parser.textFrom(start); |
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1138 if( keywords.contains(match) ) |
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1139 return parser.failure(null); |
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1140 Spaces(in); |
104
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1141 return parser.success(match); |
17
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1142 } |
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1143 |
104
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1144 private boolean NameChar() { |
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1145 return NameFirstChar() || Digit(); |
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1146 } |
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1147 |
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1148 private boolean NameFirstChar() { |
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1149 return parser.inCharRange('a', 'z') || parser.inCharRange('A', 'Z') || parser.match('_'); |
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1150 } |
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1151 |
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1152 private void RequiredMatch(char c) throws ParseException { |
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1153 if( !parser.match(c) ) |
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1154 throw parser.exception("'"+c+"' expected"); |
9
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1155 } |
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1156 |
104
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1157 private void RequiredMatch(String s) throws ParseException { |
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1158 if( !parser.match(s) ) |
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1159 throw parser.exception("'"+s+"' expected"); |
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1160 } |
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1161 |
129
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1162 private void RequiredKeyword(String keyword,In in) throws ParseException { |
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1163 if( !Keyword(keyword,in) ) |
104
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1164 throw parser.exception("'"+keyword+"' expected"); |
9
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1165 } |
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1166 |
129
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1167 private boolean Keyword(String keyword,In in) throws ParseException { |
104
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1168 parser.begin(); |
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1169 if( !parser.match(keyword) || NameChar() ) |
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1170 return parser.failure(); |
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1171 Spaces(in); |
104
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1172 return parser.success(); |
12
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1173 } |
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1174 |
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1175 private static final Set<String> keywords = new HashSet<String>(Arrays.asList( |
12
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1176 "and", |
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1177 "break", |
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1178 "do", |
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1179 "else", |
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1180 "elseif", |
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1181 "end", |
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1182 "false", |
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1183 "for", |
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1184 "function", |
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1185 "goto", |
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1186 "if", |
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1187 "in", |
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1188 "local", |
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1189 "nil", |
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1190 "not", |
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1191 "or", |
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1192 "repeat", |
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1193 "return", |
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1194 "then", |
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1195 "true", |
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1196 "until", |
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1197 "while" |
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1198 )); |
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1199 |
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1200 private Expr Literal(In in) throws ParseException { |
645 | 1201 parser.begin(); |
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1202 if( NilLiteral(in) ) |
645 | 1203 return parser.success(new ConstExpr(null)); |
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1204 Boolean b = BooleanLiteral(in); |
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1205 if( b != null ) |
645 | 1206 return parser.success(new ConstExpr(b)); |
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1207 Number n = NumberLiteral(in); |
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1208 if( n != null ) |
645 | 1209 return parser.success(new ConstExpr(n)); |
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1210 String s = StringLiteral(in); |
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1211 if( s != null ) |
645 | 1212 return parser.success(new ConstExpr(s)); |
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1213 return parser.failure(null); |
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1214 } |
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1215 |
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1216 private boolean NilLiteral(In in) throws ParseException { |
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1217 return Keyword("nil",in); |
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1218 } |
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1219 |
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1220 private Boolean BooleanLiteral(In in) throws ParseException { |
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1221 if( Keyword("true",in) ) |
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1222 return true; |
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1223 if( Keyword("false",in) ) |
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1224 return false; |
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1225 return null; |
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1226 } |
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1227 |
129
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1228 private Number NumberLiteral(In in) throws ParseException { |
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1229 parser.begin(); |
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1230 Number n; |
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1231 if( parser.matchIgnoreCase("0x") ) { |
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1232 n = HexNumber(); |
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1233 } else { |
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1234 n = DecNumber(); |
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1235 } |
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1236 if( n==null || NameChar() ) |
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1237 return parser.failure(null); |
129
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1238 Spaces(in); |
104
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1239 return parser.success(n); |
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1240 } |
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1241 |
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1242 private Number DecNumber() { |
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1243 int start = parser.begin(); |
535
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1244 boolean isInt = true; |
104
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1245 if( Int() ) { |
535
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1246 if( parser.match('.') ) { |
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1247 isInt = false; |
104
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1248 Int(); // optional |
535
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1249 } |
104
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1250 } else if( parser.match('.') && Int() ) { |
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1251 // ok |
535
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1252 isInt = false; |
104
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1253 } else |
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1254 return parser.failure(null); |
535
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1255 if( Exponent() ) // optional |
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1256 isInt = false; |
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1257 String s = parser.textFrom(start); |
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1258 if( isInt ) { |
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1259 try { |
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1260 return parser.success(Integer.valueOf(s)); |
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1261 } catch(NumberFormatException e) {} |
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1262 try { |
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1263 return parser.success(Long.valueOf(s)); |
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1264 } catch(NumberFormatException e) {} |
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1265 } |
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1266 return parser.success(Double.valueOf(s)); |
5
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1267 } |
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1268 |
104
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1269 private boolean Exponent() { |
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1270 parser.begin(); |
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1271 if( !parser.matchIgnoreCase("e") ) |
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1272 return parser.failure(); |
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1273 parser.anyOf("+-"); // optional |
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1274 if( !Int() ) |
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1275 return parser.failure(); |
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1276 return parser.success(); |
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1277 } |
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1278 |
104
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1279 private boolean Int() { |
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1280 if( !Digit() ) |
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1281 return false; |
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1282 while( Digit() ); |
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1283 return true; |
5
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1284 } |
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1285 |
104
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1286 private boolean Digit() { |
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1287 return parser.inCharRange('0', '9'); |
16
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1288 } |
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1289 |
104
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1290 private Number HexNumber() { |
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1291 int start = parser.begin(); |
535
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1292 long nLong = 0; |
104
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1293 double n; |
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1294 if( HexInt() ) { |
535
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1295 nLong = Long.parseLong(parser.textFrom(start),16); |
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1296 n = (double)nLong; |
104
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1297 if( parser.match('.') ) { |
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1298 start = parser.currentIndex(); |
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1299 if( HexInt() ) { |
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1300 String dec = parser.textFrom(start); |
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1301 n += (double)Long.parseLong(dec,16) / Math.pow(16,dec.length()); |
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1302 } |
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1303 } |
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1304 } else if( parser.match('.') && HexInt() ) { |
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1305 String dec = parser.textFrom(start+1); |
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1306 n = (double)Long.parseLong(dec,16) / Math.pow(16,dec.length()); |
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1307 } else { |
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1308 return parser.failure(null); |
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1309 } |
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1310 if( parser.matchIgnoreCase("p") ) { |
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1311 parser.anyOf("+-"); // optional |
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1312 start = parser.currentIndex(); |
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1313 if( !HexInt() ) |
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1314 return parser.failure(null); |
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1315 n *= Math.pow(2,(double)Long.parseLong(parser.textFrom(start))); |
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1316 } |
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1317 if( nLong == n ) { |
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1318 int nInt = (int)nLong; |
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1319 if( nInt == nLong ) |
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1320 return parser.success(Integer.valueOf(nInt)); |
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1321 return parser.success(Long.valueOf(nLong)); |
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1322 } |
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1323 return parser.success(Double.valueOf(n)); |
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1324 } |
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1325 |
104
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1326 private boolean HexInt() { |
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1327 if( !HexDigit() ) |
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1328 return false; |
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1329 while( HexDigit() ); |
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1330 return true; |
16
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1331 } |
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1332 |
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1333 |
104
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1334 private boolean HexDigit() { |
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1335 return Digit() || parser.anyOf("abcdefABCDEF"); |
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1336 } |
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1337 |
129
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1338 private String StringLiteral(In in) throws ParseException { |
104
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1339 String s; |
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1340 if( (s=QuotedString('"'))==null |
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1341 && (s=QuotedString('\''))==null |
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1342 && (s=LongString())==null |
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1343 ) |
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1344 return null; |
129
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1345 Spaces(in); |
104
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1346 return s; |
16
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1347 } |
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1348 |
104
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1349 private String LongString() throws ParseException { |
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1350 parser.begin(); |
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1351 if( !parser.match('[') ) |
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1352 return parser.failure(null); |
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1353 int start = parser.currentIndex(); |
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1354 while( parser.match('=') ); |
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1355 int nEquals = parser.currentIndex() - start; |
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1356 if( !parser.match('[') ) |
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1357 return parser.failure(null); |
120
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1358 EndOfLine(); |
104
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1359 start = parser.currentIndex(); |
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1360 while( !LongBracketsEnd(nEquals) ) { |
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1361 if( !parser.anyChar() ) |
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1362 throw parser.exception("Unclosed long string"); |
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1363 } |
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1364 String s = parser.text.substring( start, parser.currentIndex() - nEquals - 2 ); |
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1365 return parser.success(s); |
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1366 } |
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1367 |
104
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1368 private String QuotedString(char quote) throws ParseException { |
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1369 parser.begin(); |
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1370 if( !parser.match(quote) ) |
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1371 return parser.failure(null); |
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1372 StringBuilder buf = new StringBuilder(); |
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1373 while( !parser.match(quote) ) { |
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1374 Character c = EscSeq(); |
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1375 if( c != null ) { |
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1376 buf.append(c); |
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1377 } else { |
271
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1378 if( parser.test('\r') || parser.test('\n') || !parser.anyChar() ) |
104
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1379 throw parser.exception("Unclosed string"); |
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1380 buf.append(parser.lastChar()); |
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1381 } |
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1382 } |
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1383 return parser.success(buf.toString()); |
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1384 } |
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1385 |
104
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1386 private Character EscSeq() { |
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1387 parser.begin(); |
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1388 if( !parser.match('\\') ) |
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1389 return parser.failure(null); |
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1390 if( parser.match('a') ) return parser.success('\u0007'); |
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1391 if( parser.match('b') ) return parser.success('\b'); |
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1392 if( parser.match('f') ) return parser.success('\f'); |
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1393 if( parser.match('n') ) return parser.success('\n'); |
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1394 if( parser.match('r') ) return parser.success('\r'); |
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1395 if( parser.match('t') ) return parser.success('\t'); |
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1396 if( parser.match('v') ) return parser.success('\u000b'); |
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1397 if( parser.match('\\') ) return parser.success('\\'); |
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1398 if( parser.match('"') ) return parser.success('"'); |
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1399 if( parser.match('\'') ) return parser.success('\''); |
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1400 int start = parser.currentIndex(); |
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1401 if( parser.match('x') && HexDigit() && HexDigit() ) |
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1402 return parser.success((char)Integer.parseInt(parser.textFrom(start+1),16)); |
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1403 if( Digit() ) { |
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1404 if( Digit() ) Digit(); // optional |
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1405 return parser.success((char)Integer.parseInt(parser.textFrom(start))); |
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1406 } |
271
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1407 if( EndOfLine() ) |
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1408 return parser.success('\n'); |
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1409 return parser.failure(null); |
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1410 } |
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1411 |
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1412 private void Spaces(In in) throws ParseException { |
247
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1413 while( parser.anyOf(" \t") || Comment() || ContinueOnNextLine() || in.parens && EndOfLine() ); |
14
2ddf85634d20
whitespace handling;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
12
diff
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|
1414 } |
2ddf85634d20
whitespace handling;
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parents:
12
diff
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|
1415 |
104
754e6030c029
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99
diff
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|
1416 private boolean ContinueOnNextLine() { |
754e6030c029
remove parboiled and rewrite parser;
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parents:
99
diff
changeset
|
1417 parser.begin(); |
754e6030c029
remove parboiled and rewrite parser;
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parents:
99
diff
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|
1418 return parser.match('\\') && EndOfLine() ? parser.success() : parser.failure(); |
7
bca8fc5d928b
work on expressions
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parents:
6
diff
changeset
|
1419 } |
bca8fc5d928b
work on expressions
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parents:
6
diff
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|
1420 |
247
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fix parsing of comments
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|
1421 private boolean Comment() throws ParseException { |
b5995d77878a
fix parsing of comments
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245
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|
1422 if( LongComment() ) |
b5995d77878a
fix parsing of comments
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245
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|
1423 return true; |
104
754e6030c029
remove parboiled and rewrite parser;
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99
diff
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|
1424 if( parser.match("--") ) { |
754e6030c029
remove parboiled and rewrite parser;
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parents:
99
diff
changeset
|
1425 while( parser.noneOf("\r\n") ); |
247
b5995d77878a
fix parsing of comments
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parents:
245
diff
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|
1426 return true; |
104
754e6030c029
remove parboiled and rewrite parser;
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99
diff
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|
1427 } |
247
b5995d77878a
fix parsing of comments
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parents:
245
diff
changeset
|
1428 return false; |
18
3971113699b8
add NumericForStmt
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parents:
17
diff
changeset
|
1429 } |
3971113699b8
add NumericForStmt
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
17
diff
changeset
|
1430 |
247
b5995d77878a
fix parsing of comments
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parents:
245
diff
changeset
|
1431 private boolean LongComment() throws ParseException { |
104
754e6030c029
remove parboiled and rewrite parser;
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99
diff
changeset
|
1432 parser.begin(); |
754e6030c029
remove parboiled and rewrite parser;
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parents:
99
diff
changeset
|
1433 if( !parser.match("--[") ) |
754e6030c029
remove parboiled and rewrite parser;
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diff
changeset
|
1434 return parser.failure(); |
754e6030c029
remove parboiled and rewrite parser;
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parents:
99
diff
changeset
|
1435 int start = parser.currentIndex(); |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1436 while( parser.match('=') ); |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1437 int nEquals = parser.currentIndex() - start; |
754e6030c029
remove parboiled and rewrite parser;
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parents:
99
diff
changeset
|
1438 if( !parser.match('[') ) |
754e6030c029
remove parboiled and rewrite parser;
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parents:
99
diff
changeset
|
1439 return parser.failure(); |
754e6030c029
remove parboiled and rewrite parser;
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parents:
99
diff
changeset
|
1440 while( !LongBracketsEnd(nEquals) ) { |
754e6030c029
remove parboiled and rewrite parser;
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parents:
99
diff
changeset
|
1441 if( !parser.anyChar() ) |
754e6030c029
remove parboiled and rewrite parser;
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parents:
99
diff
changeset
|
1442 throw parser.exception("Unclosed comment"); |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
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|
1443 } |
754e6030c029
remove parboiled and rewrite parser;
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parents:
99
diff
changeset
|
1444 return parser.success(); |
754e6030c029
remove parboiled and rewrite parser;
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diff
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|
1445 } |
754e6030c029
remove parboiled and rewrite parser;
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99
diff
changeset
|
1446 |
754e6030c029
remove parboiled and rewrite parser;
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parents:
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diff
changeset
|
1447 private boolean LongBracketsEnd(int nEquals) { |
754e6030c029
remove parboiled and rewrite parser;
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99
diff
changeset
|
1448 parser.begin(); |
754e6030c029
remove parboiled and rewrite parser;
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parents:
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diff
changeset
|
1449 if( !parser.match(']') ) |
754e6030c029
remove parboiled and rewrite parser;
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diff
changeset
|
1450 return parser.failure(); |
754e6030c029
remove parboiled and rewrite parser;
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parents:
99
diff
changeset
|
1451 while( nEquals-- > 0 ) { |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1452 if( !parser.match('=') ) |
754e6030c029
remove parboiled and rewrite parser;
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99
diff
changeset
|
1453 return parser.failure(); |
754e6030c029
remove parboiled and rewrite parser;
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parents:
99
diff
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|
1454 } |
754e6030c029
remove parboiled and rewrite parser;
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parents:
99
diff
changeset
|
1455 if( !parser.match(']') ) |
754e6030c029
remove parboiled and rewrite parser;
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parents:
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diff
changeset
|
1456 return parser.failure(); |
754e6030c029
remove parboiled and rewrite parser;
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diff
changeset
|
1457 return parser.success(); |
12
9cea1aea5eef
CmdLine can run files
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
11
diff
changeset
|
1458 } |
9cea1aea5eef
CmdLine can run files
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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diff
changeset
|
1459 |
648
e387e4021afe
start compiler with len operator
Franklin Schmidt <fschmidt@gmail.com>
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diff
changeset
|
1460 |
e387e4021afe
start compiler with len operator
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645
diff
changeset
|
1461 |
e387e4021afe
start compiler with len operator
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parents:
645
diff
changeset
|
1462 |
e387e4021afe
start compiler with len operator
Franklin Schmidt <fschmidt@gmail.com>
parents:
645
diff
changeset
|
1463 private static int classCounter = 0; |
e387e4021afe
start compiler with len operator
Franklin Schmidt <fschmidt@gmail.com>
parents:
645
diff
changeset
|
1464 |
649
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1465 private class ExpString { |
37f0cf43f191
UnaryExpr now compiled
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parents:
648
diff
changeset
|
1466 final String code; |
37f0cf43f191
UnaryExpr now compiled
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parents:
648
diff
changeset
|
1467 final boolean isExpr; |
37f0cf43f191
UnaryExpr now compiled
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parents:
648
diff
changeset
|
1468 final boolean isStmt; |
37f0cf43f191
UnaryExpr now compiled
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648
diff
changeset
|
1469 |
37f0cf43f191
UnaryExpr now compiled
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648
diff
changeset
|
1470 ExpString(Expressions exp) { |
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
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648
diff
changeset
|
1471 if( exp==null ) throw new NullPointerException(); |
37f0cf43f191
UnaryExpr now compiled
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parents:
648
diff
changeset
|
1472 int i = $Luan.addExpressions(exp); |
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1473 code = "$Luan.getExpressions(" + i + ").eval($luan)"; |
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1474 isExpr = exp instanceof Expr; |
37f0cf43f191
UnaryExpr now compiled
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parents:
648
diff
changeset
|
1475 isStmt = exp instanceof StmtExp; |
37f0cf43f191
UnaryExpr now compiled
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parents:
648
diff
changeset
|
1476 } |
37f0cf43f191
UnaryExpr now compiled
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parents:
648
diff
changeset
|
1477 |
37f0cf43f191
UnaryExpr now compiled
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648
diff
changeset
|
1478 ExpString(String code,boolean isExpr,boolean isStmt) { |
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1479 this.code = code; |
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1480 this.isExpr = isExpr; |
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1481 this.isStmt = isStmt; |
37f0cf43f191
UnaryExpr now compiled
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parents:
648
diff
changeset
|
1482 } |
37f0cf43f191
UnaryExpr now compiled
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parents:
648
diff
changeset
|
1483 |
37f0cf43f191
UnaryExpr now compiled
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parents:
648
diff
changeset
|
1484 ExpString expr() { |
650
d658eab7bf4c
finish compiling operators
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parents:
649
diff
changeset
|
1485 return isExpr ? this : new ExpString( "$Luan.first(" + code + ")", true, isStmt ); |
649
37f0cf43f191
UnaryExpr now compiled
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parents:
648
diff
changeset
|
1486 } |
37f0cf43f191
UnaryExpr now compiled
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parents:
648
diff
changeset
|
1487 |
37f0cf43f191
UnaryExpr now compiled
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parents:
648
diff
changeset
|
1488 Expressions toExpressions() { |
37f0cf43f191
UnaryExpr now compiled
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parents:
648
diff
changeset
|
1489 String superClass = isStmt ? "StmtExp" : "Expressions"; |
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1490 String className = "EXP" + ++classCounter; |
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1491 String classCode = "" |
37f0cf43f191
UnaryExpr now compiled
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parents:
648
diff
changeset
|
1492 +"package luan.impl;\n" |
37f0cf43f191
UnaryExpr now compiled
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parents:
648
diff
changeset
|
1493 +"import luan.LuanException;\n" |
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1494 +"\n" |
37f0cf43f191
UnaryExpr now compiled
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parents:
648
diff
changeset
|
1495 +"public class " + className +" implements " + superClass + " {\n" |
37f0cf43f191
UnaryExpr now compiled
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parents:
648
diff
changeset
|
1496 +" @Override public Object eval(LuanStateImpl $luan) throws LuanException {\n" |
650
d658eab7bf4c
finish compiling operators
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parents:
649
diff
changeset
|
1497 +" Object $cnd;\n" |
649
37f0cf43f191
UnaryExpr now compiled
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parents:
648
diff
changeset
|
1498 +" return " + code + ";\n" |
37f0cf43f191
UnaryExpr now compiled
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parents:
648
diff
changeset
|
1499 +" }\n" |
37f0cf43f191
UnaryExpr now compiled
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parents:
648
diff
changeset
|
1500 +"}\n" |
37f0cf43f191
UnaryExpr now compiled
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parents:
648
diff
changeset
|
1501 ; |
37f0cf43f191
UnaryExpr now compiled
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parents:
648
diff
changeset
|
1502 //System.out.println(code); |
37f0cf43f191
UnaryExpr now compiled
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parents:
648
diff
changeset
|
1503 try { |
37f0cf43f191
UnaryExpr now compiled
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parents:
648
diff
changeset
|
1504 Class cls = LuanJavaCompiler.compile("luan.impl."+className,code,classCode); |
37f0cf43f191
UnaryExpr now compiled
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parents:
648
diff
changeset
|
1505 return (Expressions)cls.newInstance(); |
37f0cf43f191
UnaryExpr now compiled
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parents:
648
diff
changeset
|
1506 } catch(ClassNotFoundException e) { |
37f0cf43f191
UnaryExpr now compiled
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parents:
648
diff
changeset
|
1507 throw new RuntimeException(e); |
37f0cf43f191
UnaryExpr now compiled
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parents:
648
diff
changeset
|
1508 } catch(InstantiationException e) { |
37f0cf43f191
UnaryExpr now compiled
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parents:
648
diff
changeset
|
1509 throw new RuntimeException(e); |
37f0cf43f191
UnaryExpr now compiled
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parents:
648
diff
changeset
|
1510 } catch(IllegalAccessException e) { |
37f0cf43f191
UnaryExpr now compiled
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parents:
648
diff
changeset
|
1511 throw new RuntimeException(e); |
37f0cf43f191
UnaryExpr now compiled
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parents:
648
diff
changeset
|
1512 } |
648
e387e4021afe
start compiler with len operator
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parents:
645
diff
changeset
|
1513 } |
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parents:
645
diff
changeset
|
1514 } |
e387e4021afe
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parents:
645
diff
changeset
|
1515 |
650
d658eab7bf4c
finish compiling operators
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649
diff
changeset
|
1516 private static Expressions exp(ExpString expStr) { |
d658eab7bf4c
finish compiling operators
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parents:
649
diff
changeset
|
1517 return expStr==null ? null : expStr.toExpressions(); |
d658eab7bf4c
finish compiling operators
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parents:
649
diff
changeset
|
1518 } |
d658eab7bf4c
finish compiling operators
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parents:
649
diff
changeset
|
1519 |
652
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1520 private ExpString exp(List<ExpString> list) { |
067d9470184d
compile SetStmt and ForStmt
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parents:
651
diff
changeset
|
1521 switch(list.size()) { |
067d9470184d
compile SetStmt and ForStmt
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parents:
651
diff
changeset
|
1522 case 0: |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1523 return new ExpString("null",true,false); |
067d9470184d
compile SetStmt and ForStmt
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parents:
651
diff
changeset
|
1524 case 1: |
067d9470184d
compile SetStmt and ForStmt
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parents:
651
diff
changeset
|
1525 return list.get(0).expr(); |
067d9470184d
compile SetStmt and ForStmt
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parents:
651
diff
changeset
|
1526 default: |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1527 int lastI = list.size() - 1; |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1528 StringBuilder sb = new StringBuilder(); |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1529 sb.append( "new Object[]{" ); |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1530 for( int i=0; i<lastI; i++ ) { |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1531 sb.append( list.get(i).expr().code ).append( ',' ); |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1532 } |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1533 ExpString last = list.get(lastI); |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1534 if( last.isExpr ) { |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1535 sb.append( last.code ).append( '}' ); |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1536 return new ExpString(sb.toString(),false,false); |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1537 } else { |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1538 sb.append( '}' ); |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1539 String s = "$Luan.concatArgs(" + sb + "," + last.code + ")"; |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1540 return new ExpString(s,false,false); |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1541 } |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1542 } |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1543 } |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1544 |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1545 private static List<Expressions> expList(List<ExpString> esList) { |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1546 List<Expressions> list = new ArrayList<Expressions>(); |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1547 for( ExpString es : esList ) { |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1548 list.add(exp(es)); |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1549 } |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1550 return list; |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1551 } |
651
140cc5191b7a
start compiling statements
Franklin Schmidt <fschmidt@gmail.com>
parents:
650
diff
changeset
|
1552 |
140cc5191b7a
start compiling statements
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parents:
650
diff
changeset
|
1553 private static class StmtString { |
140cc5191b7a
start compiling statements
Franklin Schmidt <fschmidt@gmail.com>
parents:
650
diff
changeset
|
1554 final String code; |
140cc5191b7a
start compiling statements
Franklin Schmidt <fschmidt@gmail.com>
parents:
650
diff
changeset
|
1555 |
140cc5191b7a
start compiling statements
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parents:
650
diff
changeset
|
1556 StmtString(Stmt stmt) { |
140cc5191b7a
start compiling statements
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parents:
650
diff
changeset
|
1557 if( stmt==null ) throw new NullPointerException(); |
140cc5191b7a
start compiling statements
Franklin Schmidt <fschmidt@gmail.com>
parents:
650
diff
changeset
|
1558 int i = $Luan.addStmt(stmt); |
140cc5191b7a
start compiling statements
Franklin Schmidt <fschmidt@gmail.com>
parents:
650
diff
changeset
|
1559 code = "$Luan.getStmt(" + i + ").eval($luan);\n"; |
140cc5191b7a
start compiling statements
Franklin Schmidt <fschmidt@gmail.com>
parents:
650
diff
changeset
|
1560 } |
140cc5191b7a
start compiling statements
Franklin Schmidt <fschmidt@gmail.com>
parents:
650
diff
changeset
|
1561 |
140cc5191b7a
start compiling statements
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parents:
650
diff
changeset
|
1562 StmtString(String code) { |
140cc5191b7a
start compiling statements
Franklin Schmidt <fschmidt@gmail.com>
parents:
650
diff
changeset
|
1563 this.code = code; |
652
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1564 if( code.contains("LuanParser") ) throw new RuntimeException("\n"+code); |
651
140cc5191b7a
start compiling statements
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parents:
650
diff
changeset
|
1565 } |
140cc5191b7a
start compiling statements
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parents:
650
diff
changeset
|
1566 |
140cc5191b7a
start compiling statements
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parents:
650
diff
changeset
|
1567 Stmt toStmt() { |
140cc5191b7a
start compiling statements
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parents:
650
diff
changeset
|
1568 String className = "EXP" + ++classCounter; |
140cc5191b7a
start compiling statements
Franklin Schmidt <fschmidt@gmail.com>
parents:
650
diff
changeset
|
1569 String classCode = "" |
140cc5191b7a
start compiling statements
Franklin Schmidt <fschmidt@gmail.com>
parents:
650
diff
changeset
|
1570 +"package luan.impl;\n" |
652
067d9470184d
compile SetStmt and ForStmt
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parents:
651
diff
changeset
|
1571 +"import luan.LuanFunction;\n" |
651
140cc5191b7a
start compiling statements
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parents:
650
diff
changeset
|
1572 +"import luan.LuanException;\n" |
140cc5191b7a
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Franklin Schmidt <fschmidt@gmail.com>
parents:
650
diff
changeset
|
1573 +"\n" |
140cc5191b7a
start compiling statements
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parents:
650
diff
changeset
|
1574 +"public class " + className +" implements Stmt {\n" |
140cc5191b7a
start compiling statements
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parents:
650
diff
changeset
|
1575 +" @Override public void eval(LuanStateImpl $luan) throws LuanException {\n" |
140cc5191b7a
start compiling statements
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parents:
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diff
changeset
|
1576 +" Object $cnd;\n" |
140cc5191b7a
start compiling statements
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parents:
650
diff
changeset
|
1577 +" " + code |
140cc5191b7a
start compiling statements
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parents:
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diff
changeset
|
1578 +" }\n" |
140cc5191b7a
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parents:
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diff
changeset
|
1579 +"}\n" |
140cc5191b7a
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parents:
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diff
changeset
|
1580 ; |
140cc5191b7a
start compiling statements
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diff
changeset
|
1581 //System.out.println(code); |
140cc5191b7a
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parents:
650
diff
changeset
|
1582 try { |
652
067d9470184d
compile SetStmt and ForStmt
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parents:
651
diff
changeset
|
1583 Class cls = LuanJavaCompiler.compile("luan.impl."+className,"code",classCode); |
651
140cc5191b7a
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diff
changeset
|
1584 return (Stmt)cls.newInstance(); |
140cc5191b7a
start compiling statements
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parents:
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diff
changeset
|
1585 } catch(ClassNotFoundException e) { |
140cc5191b7a
start compiling statements
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diff
changeset
|
1586 throw new RuntimeException(e); |
140cc5191b7a
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diff
changeset
|
1587 } catch(InstantiationException e) { |
140cc5191b7a
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diff
changeset
|
1588 throw new RuntimeException(e); |
140cc5191b7a
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diff
changeset
|
1589 } catch(IllegalAccessException e) { |
140cc5191b7a
start compiling statements
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diff
changeset
|
1590 throw new RuntimeException(e); |
140cc5191b7a
start compiling statements
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parents:
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diff
changeset
|
1591 } |
140cc5191b7a
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parents:
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diff
changeset
|
1592 } |
140cc5191b7a
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parents:
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diff
changeset
|
1593 } |
140cc5191b7a
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parents:
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diff
changeset
|
1594 |
140cc5191b7a
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diff
changeset
|
1595 private static StmtString EMPTY_STMT = new StmtString(""); |
140cc5191b7a
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parents:
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diff
changeset
|
1596 |
140cc5191b7a
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diff
changeset
|
1597 private static Stmt stmt(StmtString stmtStr) { |
140cc5191b7a
start compiling statements
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parents:
650
diff
changeset
|
1598 return stmtStr==null ? null : stmtStr.toStmt(); |
140cc5191b7a
start compiling statements
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parents:
650
diff
changeset
|
1599 } |
140cc5191b7a
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parents:
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diff
changeset
|
1600 |
140cc5191b7a
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parents:
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diff
changeset
|
1601 private static StmtString stmtStr(Stmt stmt) { |
140cc5191b7a
start compiling statements
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parents:
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diff
changeset
|
1602 return stmt==null ? null : new StmtString(stmt); |
140cc5191b7a
start compiling statements
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parents:
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diff
changeset
|
1603 } |
140cc5191b7a
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parents:
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diff
changeset
|
1604 |
652
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1605 |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1606 private static class SettableString { |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1607 final String code; |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
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diff
changeset
|
1608 |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1609 SettableString(Settable settable) { |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1610 if( settable==null ) throw new NullPointerException(); |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1611 int i = $Luan.addSettable(settable); |
067d9470184d
compile SetStmt and ForStmt
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parents:
651
diff
changeset
|
1612 code = "$Luan.getSettable(" + i + ")"; |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1613 } |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1614 |
067d9470184d
compile SetStmt and ForStmt
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parents:
651
diff
changeset
|
1615 SettableString(String code) { |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1616 this.code = code; |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1617 } |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1618 |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1619 } |
067d9470184d
compile SetStmt and ForStmt
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parents:
651
diff
changeset
|
1620 |
5
9ef0fd711101
start LuaParser
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff
changeset
|
1621 } |