Mercurial Hosting > luan
annotate core/src/luan/impl/LuanParser.java @ 666:2f449ccf54d2
use lists to assemble source
author | Franklin Schmidt <fschmidt@gmail.com> |
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date | Thu, 07 Apr 2016 23:36:56 -0600 |
parents | 41f8fdbc3a0a |
children | 08966099aa6d |
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166
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move luan/interp to impl
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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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14 |
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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) { |
200
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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,StmtString stmt) { |
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178 if( !stmt.hasReturn ) |
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179 stmt.list.add( "return LuanFunction.NOTHING;\n" ); |
664 | 180 return toFnDef( stmt, frame.stackSize, symbolsSize(), frame.isVarArg, frame.upValueGetters.toArray(NO_UP_VALUE_GETTERS) ); |
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181 } |
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182 |
665 | 183 private ExpString newFnExpStr(int start,StmtString stmt) { |
184 if( !stmt.hasReturn ) | |
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185 stmt.list.add( "return LuanFunction.NOTHING;\n" ); |
665 | 186 return toFnExpStr( stmt, frame.stackSize, symbolsSize(), frame.isVarArg, frame.upValueGetters.toArray(NO_UP_VALUE_GETTERS) ); |
187 } | |
188 | |
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189 FnDef Expression() throws ParseException { |
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190 Spaces(In.NOTHING); |
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191 int start = parser.begin(); |
658 | 192 ExpString expr = ExprZ(In.NOTHING); |
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193 if( expr != null && parser.endOfInput() ) { |
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194 StmtString stmt = new StmtString(); |
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195 stmt.list.add( "return " ); |
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196 stmt.list.addAll( expr.list ); |
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197 stmt.list.add( ";\n" ); |
665 | 198 stmt.hasReturn = true; |
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199 return parser.success(newFnDef(start,stmt)); |
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200 } |
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201 return parser.failure(null); |
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202 } |
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203 |
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204 FnDef RequiredModule() throws ParseException { |
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205 Spaces(In.NOTHING); |
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206 int start = parser.begin(); |
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207 frame.isVarArg = true; |
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208 StmtString stmt = RequiredBlock(); |
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209 if( parser.endOfInput() ) |
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210 return parser.success(newFnDef(start,stmt)); |
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211 throw parser.exception(); |
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212 } |
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213 |
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214 private StmtString RequiredBlock() throws ParseException { |
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215 StmtString stmts = new StmtString(); |
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216 int stackStart = symbolsSize(); |
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217 boolean isReturn = Stmt(stmts); |
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218 while( !isReturn && StmtSep(stmts) ) { |
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219 Spaces(In.NOTHING); |
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220 isReturn = Stmt(stmts); |
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221 } |
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222 StmtSep(null); |
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223 Spaces(In.NOTHING); |
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224 int stackEnd = symbolsSize(); |
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225 popSymbols( stackEnd - stackStart ); |
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226 if( stmts.list.isEmpty() ) |
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227 return stmts; |
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228 String code = stmts.toString(); |
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229 if( stackStart < stackEnd ) { |
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230 stmts.list.add( 0, "try {\n" ); |
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231 stmts.list.add( "" |
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232 +"} finally {\n" |
654 | 233 +" luan.stackClear("+stackStart+","+stackEnd+");\n" |
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234 +"}\n" |
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235 ); |
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236 } |
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237 stmts.hasReturn = isReturn; |
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238 return stmts; |
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239 } |
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240 |
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241 private boolean StmtSep(StmtString stmts) throws ParseException { |
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242 parser.begin(); |
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243 if( parser.match( ';' ) ) |
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244 return parser.success(); |
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245 if( EndOfLine() ) |
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246 return parser.success(); |
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247 if( stmts != null ) { |
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248 // parser.rollback(); |
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249 StmtString stmt = TemplateStmt(); |
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250 if( stmt != null ) { |
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251 stmts.list.addAll(stmt.list); |
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252 return parser.success(); |
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253 } |
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254 } |
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255 return parser.failure(); |
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256 } |
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257 |
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258 private boolean EndOfLine() { |
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259 return parser.match( "\r\n" ) || parser.match( '\r' ) || parser.match( '\n' ); |
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260 } |
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261 |
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262 private boolean Stmt(StmtString stmts) throws ParseException { |
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263 if( LocalStmt(stmts) ) |
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264 return false; |
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265 StmtString stmt; |
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266 if( (stmt=ReturnStmt()) != null ) { |
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267 stmts.list.addAll(stmt.list); |
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268 return true; |
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269 } |
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270 if( (stmt=FunctionStmt()) != null |
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271 || (stmt=LocalFunctionStmt()) != null |
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272 || (stmt=BreakStmt()) != null |
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273 || (stmt=ForStmt()) != null |
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274 || (stmt=DoStmt()) != null |
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275 || (stmt=WhileStmt()) != null |
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276 || (stmt=RepeatStmt()) != null |
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277 || (stmt=IfStmt()) != null |
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278 || (stmt=SetStmt()) != null |
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279 || (stmt=ExpressionsStmt()) != null |
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280 ) { |
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281 stmts.list.addAll(stmt.list); |
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282 } |
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283 return false; |
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284 } |
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285 |
654 | 286 private ExpString indexExpStr(ExpString exp1,ExpString exp2) { |
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287 ExpString exp = new ExpString(true,false); |
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288 exp.list.add( "luan.index(" ); |
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289 exp.list.addAll( exp1.expr().list ); |
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290 exp.list.add( "," ); |
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291 exp.list.addAll( exp2.expr().list ); |
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292 exp.list.add( ")" ); |
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293 return exp; |
654 | 294 } |
295 | |
296 private ExpString callExpStr(ExpString fn,ExpString args) { | |
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297 ExpString exp = new ExpString(false,true); |
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298 exp.list.add( "Luan.checkFunction(" ); |
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299 exp.list.addAll( fn.expr().list ); |
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300 exp.list.add( ").call(luan,Luan.array(" ); |
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301 exp.list.addAll( args.list ); |
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302 exp.list.add( "))" ); |
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303 return exp; |
654 | 304 } |
305 | |
306 private StmtString TemplateStmt() throws ParseException { | |
307 ExpString exprs = TemplateExpressions(In.NOTHING); | |
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308 if( exprs == null ) |
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309 return null; |
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310 ExpString requireCall = new ExpString(true,false); |
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311 requireCall.list.add( "PackageLuan.require(luan,\"luan:Io\")" ); |
654 | 312 ExpString stdoutExp = indexExpStr( requireCall.expr(), constExpStr("stdout") ); |
313 ExpString writeExp = indexExpStr( stdoutExp, constExpStr("write") ); | |
314 ExpString writeCall = callExpStr( writeExp, exprs ); | |
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315 StmtString stmt = new StmtString(); |
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316 stmt.list.addAll( writeCall.list ); |
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317 stmt.list.add( ";\n" ); |
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318 return stmt; |
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319 } |
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320 |
654 | 321 private ExpString TemplateExpressions(In in) throws ParseException { |
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322 if( in.template ) |
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323 return null; |
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324 int start = parser.begin(); |
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325 if( !parser.match( "%>" ) ) |
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326 return parser.failure(null); |
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327 EndOfLine(); |
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328 In inTemplate = in.template(); |
654 | 329 List<ExpString> builder = new ArrayList<ExpString>(); |
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330 while(true) { |
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331 if( parser.match( "<%=" ) ) { |
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332 Spaces(inTemplate); |
654 | 333 builder.add( RequiredExpr(inTemplate) ); |
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334 RequiredMatch( "%>" ); |
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335 } else if( parser.match( "<%" ) ) { |
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336 Spaces(inTemplate); |
654 | 337 return parser.success(expString(builder)); |
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338 } else { |
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339 int i = parser.currentIndex(); |
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340 do { |
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341 if( parser.match( "%>" ) ) |
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342 throw parser.exception("'%>' unexpected"); |
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343 if( !parser.anyChar() ) |
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344 throw parser.exception("Unclosed template expression"); |
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345 } while( !parser.test( "<%" ) ); |
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346 String match = parser.textFrom(i); |
654 | 347 builder.add( constExpStr(match) ); |
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348 } |
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349 } |
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350 } |
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351 |
658 | 352 private StmtString ReturnStmt() throws ParseException { |
645 | 353 parser.begin(); |
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354 if( !Keyword("return",In.NOTHING) ) |
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355 return parser.failure(null); |
658 | 356 ExpString exprs = ExpStringList(In.NOTHING); |
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357 StmtString stmt = new StmtString(); |
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358 stmt.list.add( "return " ); |
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359 if( exprs != null ) |
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360 stmt.list.addAll( exprs.list ); |
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361 else |
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362 stmt.list.add( "LuanFunction.NOTHING" ); |
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363 stmt.list.add( ";\n" ); |
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364 return parser.success( stmt ); |
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365 } |
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366 |
660 | 367 private StmtString FunctionStmt() throws ParseException { |
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368 parser.begin(); |
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369 if( !Keyword("function",In.NOTHING) ) |
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370 return parser.failure(null); |
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371 |
645 | 372 parser.currentIndex(); |
373 Var var = nameVar(RequiredName(In.NOTHING)); | |
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374 while( parser.match( '.' ) ) { |
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375 Spaces(In.NOTHING); |
656 | 376 ExpString exp = NameExpr(In.NOTHING); |
636 | 377 if( exp==null ) |
378 return parser.failure(null); | |
656 | 379 var = indexVar( var.exp(), exp ); |
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380 } |
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381 |
665 | 382 ExpString fnDef = RequiredFunction(In.NOTHING); |
383 return parser.success( var.set(fnDef) ); | |
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384 } |
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385 |
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386 private StmtString LocalFunctionStmt() throws ParseException { |
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387 parser.begin(); |
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388 if( !(Keyword("local",In.NOTHING) && Keyword("function",In.NOTHING)) ) |
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389 return parser.failure(null); |
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390 String name = RequiredName(In.NOTHING); |
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391 addSymbol( name ); |
665 | 392 ExpString fnDef = RequiredFunction(In.NOTHING); |
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393 Settable s = new SetLocalVar(symbolsSize()-1); |
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394 StmtString stmt = new StmtString(); |
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395 stmt.list.add( settableToString(s) ); |
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396 stmt.list.add( ".set(luan," ); |
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397 stmt.list.addAll( fnDef.list ); |
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398 stmt.list.add( ");\n" ); |
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399 return parser.success( stmt ); |
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400 } |
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401 |
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402 private StmtString BreakStmt() throws ParseException { |
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403 parser.begin(); |
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404 if( !Keyword("break",In.NOTHING) ) |
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405 return parser.failure(null); |
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406 if( frame.loops <= 0 ) |
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407 throw parser.exception("'break' outside of loop"); |
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408 StmtString stmt = new StmtString(); |
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409 stmt.list.add( "break;\n" ); |
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410 return parser.success( stmt ); |
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411 } |
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412 |
652
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413 int forCounter = 0; |
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414 |
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415 private StmtString ForStmt() throws ParseException { |
645 | 416 parser.begin(); |
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417 int stackStart = symbolsSize(); |
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418 if( !Keyword("for",In.NOTHING) ) |
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419 return parser.failure(null); |
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420 List<String> names = RequiredNameList(In.NOTHING); |
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421 if( !Keyword("in",In.NOTHING) ) |
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422 return parser.failure(null); |
652
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423 ExpString expr = RequiredExpr(In.NOTHING).expr(); |
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424 RequiredKeyword("do",In.NOTHING); |
652
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425 |
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426 SetLocalVar[] vars = new SetLocalVar[names.size()]; |
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427 for( int i=0; i<vars.length; i++ ) { |
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428 vars[i] = new SetLocalVar(stackStart+i); |
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429 } |
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430 String varsStr = varsToString(vars); |
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431 |
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432 ExpString firstVar = new ExpString(new GetLocalVar(stackStart)); |
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433 addSymbols(names); |
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434 StmtString loop = RequiredLoopBlock(); |
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435 RequiredKeyword("end",In.NOTHING); |
654 | 436 String fnVar = "fn"+ ++forCounter; |
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437 StmtString stmt = new StmtString(); |
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438 stmt.list.add( "" |
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439 +"try {\n" |
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440 +"LuanFunction "+fnVar+" = Luan.checkFunction(" |
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441 ); |
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442 stmt.list.addAll( expr.list ); |
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443 stmt.list.add( "" |
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444 + ");\n" |
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445 +"while(true) {\n" |
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446 +"for( int i="+stackStart+"; i<"+symbolsSize()+"; i++ ) {\n" |
654 | 447 +"luan.stackSet(i,null);\n" |
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448 +"}\n" |
654 | 449 +"LuanImpl.set(luan," + varsStr + ", "+fnVar+".call(luan) );\n" |
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450 +"if( " |
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451 ); |
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452 stmt.list.addAll( firstVar.list ); |
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453 stmt.list.add( "==null ) break;\n" ); |
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454 stmt.list.addAll( loop.list ); |
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455 stmt.list.add( "" |
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456 +"}" |
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457 +"} finally {\n" |
654 | 458 +"luan.stackClear("+stackStart+","+symbolsSize()+");\n" |
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459 +"}\n" |
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460 ); |
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461 popSymbols( symbolsSize() - stackStart ); |
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462 return parser.success(stmt); |
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463 } |
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464 |
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465 private StmtString DoStmt() throws ParseException { |
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466 parser.begin(); |
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467 if( !Keyword("do",In.NOTHING) ) |
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468 return parser.failure(null); |
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469 StmtString stmt = RequiredBlock(); |
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470 RequiredKeyword("end",In.NOTHING); |
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471 return parser.success(stmt); |
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472 } |
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473 |
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474 private boolean LocalStmt(StmtString stmts) throws ParseException { |
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475 parser.begin(); |
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476 if( !Keyword("local",In.NOTHING) ) |
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477 return parser.failure(); |
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478 List<String> names = NameList(In.NOTHING); |
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479 if( names==null ) { |
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480 if( Keyword("function",In.NOTHING) ) |
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481 return parser.failure(); // handled later |
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482 throw parser.exception("Invalid local statement"); |
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483 } |
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484 if( parser.match( '=' ) ) { |
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485 Spaces(In.NOTHING); |
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486 ExpString values = ExpStringList(In.NOTHING); |
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487 if( values==null ) |
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488 throw parser.exception("Expressions expected"); |
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489 SetLocalVar[] vars = new SetLocalVar[names.size()]; |
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490 int stackStart = symbolsSize(); |
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491 for( int i=0; i<vars.length; i++ ) { |
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492 vars[i] = new SetLocalVar(stackStart+i); |
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493 } |
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494 String varsStr = varsToString(vars); |
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495 stmts.list.add( "LuanImpl.set(luan," + varsStr + "," ); |
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496 stmts.list.addAll( values.list ); |
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497 stmts.list.add( ");\n" ); |
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498 } |
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499 addSymbols(names); |
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500 return parser.success(); |
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501 } |
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502 |
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503 private List<String> RequiredNameList(In in) throws ParseException { |
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504 parser.begin(); |
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505 List<String> names = NameList(in); |
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506 if( names==null ) |
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507 throw parser.exception("Name expected"); |
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508 return parser.success(names); |
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509 } |
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510 |
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511 private List<String> NameList(In in) throws ParseException { |
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512 String name = Name(in); |
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513 if( name==null ) |
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514 return null; |
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515 List<String> names = new ArrayList<String>(); |
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516 names.add(name); |
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517 while( (name=anotherName(in)) != null ) { |
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518 names.add(name); |
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519 } |
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520 return names; |
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521 } |
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522 |
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523 private String anotherName(In in) throws ParseException { |
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524 parser.begin(); |
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525 if( !parser.match( ',' ) ) |
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526 return parser.failure(null); |
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527 Spaces(in); |
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528 String name = Name(in); |
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529 if( name==null ) |
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530 return parser.failure(null); |
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531 return parser.success(name); |
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532 } |
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533 |
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534 private StmtString WhileStmt() throws ParseException { |
645 | 535 parser.begin(); |
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536 if( !Keyword("while",In.NOTHING) ) |
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537 return parser.failure(null); |
651
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diff
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538 ExpString cnd = RequiredExpr(In.NOTHING).expr(); |
129
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539 RequiredKeyword("do",In.NOTHING); |
651
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540 StmtString loop = RequiredLoopBlock(); |
129
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541 RequiredKeyword("end",In.NOTHING); |
666
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diff
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542 StmtString stmt = new StmtString(); |
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Franklin Schmidt <fschmidt@gmail.com>
parents:
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diff
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543 stmt.list.add( "while( Luan.checkBoolean(" ); |
2f449ccf54d2
use lists to assemble source
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parents:
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diff
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|
544 stmt.list.addAll( cnd.list ); |
2f449ccf54d2
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diff
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|
545 stmt.list.add( ") ) {\n" ); |
2f449ccf54d2
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|
546 stmt.list.addAll( loop.list ); |
2f449ccf54d2
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parents:
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diff
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|
547 stmt.list.add( "}\n" ); |
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diff
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|
548 return parser.success( stmt ); |
104
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parents:
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|
549 } |
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diff
changeset
|
550 |
651
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551 private StmtString RepeatStmt() throws ParseException { |
645 | 552 parser.begin(); |
129
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553 if( !Keyword("repeat",In.NOTHING) ) |
104
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parents:
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554 return parser.failure(null); |
651
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diff
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|
555 StmtString loop =RequiredLoopBlock(); |
129
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changeset
|
556 RequiredKeyword("until",In.NOTHING); |
651
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parents:
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diff
changeset
|
557 ExpString cnd = RequiredExpr(In.NOTHING).expr(); |
666
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558 StmtString stmt = new StmtString(); |
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parents:
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diff
changeset
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559 stmt.list.add( "do {\n" ); |
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parents:
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diff
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560 stmt.list.addAll( loop.list ); |
2f449ccf54d2
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Franklin Schmidt <fschmidt@gmail.com>
parents:
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diff
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|
561 stmt.list.add( "} while( !Luan.checkBoolean(" ); |
2f449ccf54d2
use lists to assemble source
Franklin Schmidt <fschmidt@gmail.com>
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diff
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|
562 stmt.list.addAll( cnd.list ); |
2f449ccf54d2
use lists to assemble source
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diff
changeset
|
563 stmt.list.add( ") );\n" ); |
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changeset
|
564 return parser.success( stmt ); |
21
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parents:
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565 } |
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|
566 |
651
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567 private StmtString RequiredLoopBlock() throws ParseException { |
104
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|
568 incLoops(); |
651
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parents:
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diff
changeset
|
569 StmtString stmt = RequiredBlock(); |
104
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parents:
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changeset
|
570 decLoops(); |
754e6030c029
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571 return stmt; |
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|
572 } |
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changeset
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573 |
653
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Franklin Schmidt <fschmidt@gmail.com>
parents:
652
diff
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|
574 private StmtString IfStmt() throws ParseException { |
104
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|
575 parser.begin(); |
129
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changeset
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576 if( !Keyword("if",In.NOTHING) ) |
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changeset
|
577 return parser.failure(null); |
666
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parents:
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diff
changeset
|
578 StmtString stmt = new StmtString(); |
653
538b0ae08faa
compile IfStmt and BreakStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
652
diff
changeset
|
579 ExpString cnd; |
538b0ae08faa
compile IfStmt and BreakStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
652
diff
changeset
|
580 StmtString block; |
538b0ae08faa
compile IfStmt and BreakStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
652
diff
changeset
|
581 cnd = RequiredExpr(In.NOTHING).expr(); |
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changeset
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582 RequiredKeyword("then",In.NOTHING); |
653
538b0ae08faa
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Franklin Schmidt <fschmidt@gmail.com>
parents:
652
diff
changeset
|
583 block = RequiredBlock(); |
666
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Franklin Schmidt <fschmidt@gmail.com>
parents:
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diff
changeset
|
584 stmt.list.add( "if( Luan.checkBoolean(" ); |
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Franklin Schmidt <fschmidt@gmail.com>
parents:
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diff
changeset
|
585 stmt.list.addAll( cnd.list ); |
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Franklin Schmidt <fschmidt@gmail.com>
parents:
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diff
changeset
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586 stmt.list.add( ") ) {\n" ); |
2f449ccf54d2
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parents:
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diff
changeset
|
587 stmt.list.addAll( block.list ); |
653
538b0ae08faa
compile IfStmt and BreakStmt
Franklin Schmidt <fschmidt@gmail.com>
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diff
changeset
|
588 while( Keyword("elseif",In.NOTHING) ) { |
538b0ae08faa
compile IfStmt and BreakStmt
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parents:
652
diff
changeset
|
589 cnd = RequiredExpr(In.NOTHING).expr(); |
538b0ae08faa
compile IfStmt and BreakStmt
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parents:
652
diff
changeset
|
590 RequiredKeyword("then",In.NOTHING); |
538b0ae08faa
compile IfStmt and BreakStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
652
diff
changeset
|
591 block = RequiredBlock(); |
666
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Franklin Schmidt <fschmidt@gmail.com>
parents:
665
diff
changeset
|
592 stmt.list.add( "} else if( Luan.checkBoolean(" ); |
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Franklin Schmidt <fschmidt@gmail.com>
parents:
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diff
changeset
|
593 stmt.list.addAll( cnd.list ); |
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use lists to assemble source
Franklin Schmidt <fschmidt@gmail.com>
parents:
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diff
changeset
|
594 stmt.list.add( ") ) {\n" ); |
2f449ccf54d2
use lists to assemble source
Franklin Schmidt <fschmidt@gmail.com>
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diff
changeset
|
595 stmt.list.addAll( block.list ); |
104
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596 } |
653
538b0ae08faa
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Franklin Schmidt <fschmidt@gmail.com>
parents:
652
diff
changeset
|
597 if( Keyword("else",In.NOTHING) ) { |
538b0ae08faa
compile IfStmt and BreakStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
652
diff
changeset
|
598 block = RequiredBlock(); |
666
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Franklin Schmidt <fschmidt@gmail.com>
parents:
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diff
changeset
|
599 stmt.list.add( "} else {\n" ); |
2f449ccf54d2
use lists to assemble source
Franklin Schmidt <fschmidt@gmail.com>
parents:
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diff
changeset
|
600 stmt.list.addAll( block.list ); |
653
538b0ae08faa
compile IfStmt and BreakStmt
Franklin Schmidt <fschmidt@gmail.com>
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652
diff
changeset
|
601 } |
538b0ae08faa
compile IfStmt and BreakStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
652
diff
changeset
|
602 RequiredKeyword("end",In.NOTHING); |
666
2f449ccf54d2
use lists to assemble source
Franklin Schmidt <fschmidt@gmail.com>
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diff
changeset
|
603 stmt.list.add( "}\n" ); |
2f449ccf54d2
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diff
changeset
|
604 return parser.success( stmt ); |
20
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parents:
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diff
changeset
|
605 } |
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|
606 |
652
067d9470184d
compile SetStmt and ForStmt
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|
607 private StmtString SetStmt() throws ParseException { |
104
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diff
changeset
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608 parser.begin(); |
660 | 609 List<Var> vars = new ArrayList<Var>(); |
610 Var v = SettableVar(); | |
611 if( v == null ) | |
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612 return parser.failure(null); |
660 | 613 vars.add(v); |
104
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614 while( parser.match( ',' ) ) { |
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|
615 Spaces(In.NOTHING); |
660 | 616 v = SettableVar(); |
617 if( v == null ) | |
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618 return parser.failure(null); |
660 | 619 vars.add(v); |
104
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620 } |
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changeset
|
621 if( !parser.match( '=' ) ) |
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622 return parser.failure(null); |
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|
623 Spaces(In.NOTHING); |
652
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651
diff
changeset
|
624 ExpString values = ExpStringList(In.NOTHING); |
104
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diff
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|
625 if( values==null ) |
274
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626 // throw parser.exception("Expressions expected"); |
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627 return parser.failure(null); |
660 | 628 int n = vars.size(); |
629 if( n == 1 ) | |
630 return parser.success( vars.get(0).set(values) ); | |
666
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diff
changeset
|
631 StmtString stmt = new StmtString(); |
2f449ccf54d2
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parents:
665
diff
changeset
|
632 stmt.list.add( "t = " ); |
2f449ccf54d2
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parents:
665
diff
changeset
|
633 stmt.list.addAll( values.list ); |
2f449ccf54d2
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parents:
665
diff
changeset
|
634 stmt.list.add( ";\n" ); |
2f449ccf54d2
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parents:
665
diff
changeset
|
635 ExpString t = new ExpString(true,false); |
2f449ccf54d2
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parents:
665
diff
changeset
|
636 t.list.add( "t" ); |
2f449ccf54d2
use lists to assemble source
Franklin Schmidt <fschmidt@gmail.com>
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diff
changeset
|
637 stmt.list.addAll( vars.get(0).set(t).list ); |
660 | 638 for( int i=1; i<n; i++ ) { |
666
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diff
changeset
|
639 t.list.clear(); |
2f449ccf54d2
use lists to assemble source
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665
diff
changeset
|
640 t.list.add( "LuanImpl.pick(t,"+i+")" ); |
2f449ccf54d2
use lists to assemble source
Franklin Schmidt <fschmidt@gmail.com>
parents:
665
diff
changeset
|
641 stmt.list.addAll( vars.get(i).set(t).list ); |
660 | 642 } |
666
2f449ccf54d2
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Franklin Schmidt <fschmidt@gmail.com>
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diff
changeset
|
643 return parser.success( stmt ); |
652
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
644 } |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
645 |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
646 private static String varsToString(Settable[] vars) { |
067d9470184d
compile SetStmt and ForStmt
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parents:
651
diff
changeset
|
647 StringBuilder sb = new StringBuilder(); |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
648 sb.append( "new Settable[]{" ); |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
649 for( Settable v : vars ) { |
666
2f449ccf54d2
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Franklin Schmidt <fschmidt@gmail.com>
parents:
665
diff
changeset
|
650 sb.append( settableToString(v) ).append( ',' ); |
652
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
651 } |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
652 sb.append( "}" ); |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
653 return sb.toString(); |
104
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|
654 } |
754e6030c029
remove parboiled and rewrite parser;
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diff
changeset
|
655 |
651
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diff
changeset
|
656 private StmtString ExpressionsStmt() throws ParseException { |
104
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657 parser.begin(); |
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658 ExpString exp = ExprZ(In.NOTHING); |
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659 if( exp != null && exp.isStmt ) { |
666
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660 StmtString stmt = new StmtString(); |
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661 if( exp.isExpr ) { |
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662 stmt.list.add( "LuanImpl.nop(" ); |
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663 stmt.list.addAll( exp.list ); |
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664 stmt.list.add( ")" ); |
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665 } else { |
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666 stmt.list.addAll( exp.list ); |
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667 } |
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668 stmt.list.add( ";\n" ); |
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669 return parser.success( stmt ); |
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670 } |
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671 return parser.failure(null); |
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672 } |
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673 |
660 | 674 private Var SettableVar() throws ParseException { |
104
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675 int start = parser.begin(); |
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676 Var var = VarZ(In.NOTHING); |
660 | 677 if( var==null || !var.isSettable() ) |
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678 return parser.failure(null); |
660 | 679 return parser.success( var ); |
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680 } |
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681 |
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682 private ExpString RequiredExpr(In in) throws ParseException { |
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683 parser.begin(); |
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684 return parser.success(required(ExprZ(in),"Bad expression")); |
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685 } |
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686 |
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687 private ExpString ExprZ(In in) throws ParseException { |
449 | 688 return OrExpr(in); |
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689 } |
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690 |
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691 private ExpString OrExpr(In in) throws ParseException { |
645 | 692 parser.begin(); |
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693 ExpString exp = AndExpr(in); |
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694 if( exp==null ) |
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695 return parser.failure(null); |
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696 while( Keyword("or",in) ) { |
650
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697 exp = exp.expr(); |
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698 ExpString exp2 = required(RelExpr(in)).expr(); |
666
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699 ExpString newExp = new ExpString(true,true); |
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700 newExp.list.add( "(LuanImpl.cnd(t = " ); |
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701 newExp.list.addAll( exp.list ); |
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702 newExp.list.add( ") ? t : (" ); |
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703 newExp.list.addAll( exp2.list ); |
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704 newExp.list.add( "))" ); |
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705 exp = newExp; |
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706 } |
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707 return parser.success(exp); |
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708 } |
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709 |
650
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710 private ExpString AndExpr(In in) throws ParseException { |
645 | 711 parser.begin(); |
650
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712 ExpString exp = RelExpr(in); |
104
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713 if( exp==null ) |
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714 return parser.failure(null); |
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715 while( Keyword("and",in) ) { |
650
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716 exp = exp.expr(); |
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717 ExpString exp2 = required(RelExpr(in)).expr(); |
666
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718 ExpString newExp = new ExpString(true,true); |
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719 newExp.list.add( "(LuanImpl.cnd(t = " ); |
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720 newExp.list.addAll( exp.list ); |
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721 newExp.list.add( ") ? (" ); |
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722 newExp.list.addAll( exp2.list ); |
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723 newExp.list.add( ") : t)" ); |
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724 exp = newExp; |
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725 } |
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|
726 return parser.success(exp); |
18
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727 } |
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728 |
650
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729 private ExpString RelExpr(In in) throws ParseException { |
645 | 730 parser.begin(); |
650
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731 ExpString exp = ConcatExpr(in); |
104
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732 if( exp==null ) |
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733 return parser.failure(null); |
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734 while(true) { |
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735 if( parser.match("==") ) { |
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736 Spaces(in); |
650
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737 exp = exp.expr(); |
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738 ExpString exp2 = required(ConcatExpr(in)).expr(); |
666
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739 ExpString newExp = new ExpString(true,false); |
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740 newExp.list.add( "LuanImpl.eq(luan," ); |
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741 newExp.list.addAll( exp.list ); |
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742 newExp.list.add( "," ); |
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743 newExp.list.addAll( exp2.list ); |
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744 newExp.list.add( ")" ); |
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745 exp = newExp; |
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746 } else if( parser.match("~=") ) { |
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747 Spaces(in); |
650
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|
748 exp = exp.expr(); |
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749 ExpString exp2 = required(ConcatExpr(in)).expr(); |
666
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|
750 ExpString newExp = new ExpString(true,false); |
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751 newExp.list.add( "!LuanImpl.eq(luan," ); |
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changeset
|
752 newExp.list.addAll( exp.list ); |
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753 newExp.list.add( "," ); |
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diff
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754 newExp.list.addAll( exp2.list ); |
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|
755 newExp.list.add( ")" ); |
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|
756 exp = newExp; |
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757 } else if( parser.match("<=") ) { |
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758 Spaces(in); |
650
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759 exp = exp.expr(); |
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760 ExpString exp2 = required(ConcatExpr(in)).expr(); |
666
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761 ExpString newExp = new ExpString(true,false); |
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762 newExp.list.add( "LuanImpl.le(luan," ); |
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changeset
|
763 newExp.list.addAll( exp.list ); |
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changeset
|
764 newExp.list.add( "," ); |
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diff
changeset
|
765 newExp.list.addAll( exp2.list ); |
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766 newExp.list.add( ")" ); |
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changeset
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767 exp = newExp; |
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768 } else if( parser.match(">=") ) { |
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769 Spaces(in); |
650
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770 exp = exp.expr(); |
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771 ExpString exp2 = required(ConcatExpr(in)).expr(); |
666
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772 ExpString newExp = new ExpString(true,false); |
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changeset
|
773 newExp.list.add( "LuanImpl.le(luan," ); |
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774 newExp.list.addAll( exp2.list ); |
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|
775 newExp.list.add( "," ); |
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665
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776 newExp.list.addAll( exp.list ); |
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777 newExp.list.add( ")" ); |
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778 exp = newExp; |
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779 } else if( parser.match("<") ) { |
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780 Spaces(in); |
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781 exp = exp.expr(); |
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782 ExpString exp2 = required(ConcatExpr(in)).expr(); |
666
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783 ExpString newExp = new ExpString(true,false); |
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784 newExp.list.add( "LuanImpl.lt(luan," ); |
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785 newExp.list.addAll( exp.list ); |
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786 newExp.list.add( "," ); |
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787 newExp.list.addAll( exp2.list ); |
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788 newExp.list.add( ")" ); |
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789 exp = newExp; |
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790 } else if( parser.match(">") ) { |
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791 Spaces(in); |
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792 exp = exp.expr(); |
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793 ExpString exp2 = required(ConcatExpr(in)).expr(); |
666
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794 ExpString newExp = new ExpString(true,false); |
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795 newExp.list.add( "LuanImpl.lt(luan," ); |
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796 newExp.list.addAll( exp2.list ); |
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797 newExp.list.add( "," ); |
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798 newExp.list.addAll( exp.list ); |
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799 newExp.list.add( ")" ); |
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800 exp = newExp; |
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801 } else |
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802 break; |
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803 } |
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804 return parser.success(exp); |
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805 } |
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806 |
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807 private ExpString ConcatExpr(In in) throws ParseException { |
645 | 808 parser.begin(); |
650
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809 ExpString exp = SumExpr(in); |
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810 if( exp==null ) |
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811 return parser.failure(null); |
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812 if( parser.match("..") ) { |
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813 Spaces(in); |
650
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814 exp = exp.expr(); |
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815 ExpString exp2 = required(ConcatExpr(in)).expr(); |
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816 ExpString newExp = new ExpString(true,false); |
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817 newExp.list.add( "LuanImpl.concat(luan," ); |
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818 newExp.list.addAll( exp.list ); |
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819 newExp.list.add( "," ); |
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820 newExp.list.addAll( exp2.list ); |
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821 newExp.list.add( ")" ); |
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822 exp = newExp; |
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823 } |
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824 return parser.success(exp); |
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825 } |
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826 |
650
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827 private ExpString SumExpr(In in) throws ParseException { |
645 | 828 parser.begin(); |
650
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829 ExpString exp = TermExpr(in); |
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830 if( exp==null ) |
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831 return parser.failure(null); |
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832 while(true) { |
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833 if( parser.match('+') ) { |
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834 Spaces(in); |
650
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835 exp = exp.expr(); |
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836 ExpString exp2 = required(TermExpr(in)).expr(); |
666
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837 ExpString newExp = new ExpString(true,false); |
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838 newExp.list.add( "LuanImpl.add(luan," ); |
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839 newExp.list.addAll( exp.list ); |
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840 newExp.list.add( "," ); |
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841 newExp.list.addAll( exp2.list ); |
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|
842 newExp.list.add( ")" ); |
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843 exp = newExp; |
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844 } else if( Minus() ) { |
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845 Spaces(in); |
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846 exp = exp.expr(); |
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847 ExpString exp2 = required(TermExpr(in)).expr(); |
666
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|
848 ExpString newExp = new ExpString(true,false); |
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849 newExp.list.add( "LuanImpl.sub(luan," ); |
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850 newExp.list.addAll( exp.list ); |
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851 newExp.list.add( "," ); |
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852 newExp.list.addAll( exp2.list ); |
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853 newExp.list.add( ")" ); |
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854 exp = newExp; |
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855 } else |
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856 break; |
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857 } |
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858 return parser.success(exp); |
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859 } |
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860 |
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861 private boolean Minus() { |
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862 parser.begin(); |
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863 return parser.match('-') && !parser.match('-') ? parser.success() : parser.failure(); |
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864 } |
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865 |
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866 private ExpString TermExpr(In in) throws ParseException { |
645 | 867 parser.begin(); |
650
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868 ExpString exp = UnaryExpr(in); |
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869 if( exp==null ) |
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870 return parser.failure(null); |
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871 while(true) { |
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872 if( parser.match('*') ) { |
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873 Spaces(in); |
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874 exp = exp.expr(); |
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875 ExpString exp2 = required(UnaryExpr(in)).expr(); |
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876 ExpString newExp = new ExpString(true,false); |
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877 newExp.list.add( "LuanImpl.mul(luan," ); |
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|
878 newExp.list.addAll( exp.list ); |
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879 newExp.list.add( "," ); |
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|
880 newExp.list.addAll( exp2.list ); |
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881 newExp.list.add( ")" ); |
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882 exp = newExp; |
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883 } else if( parser.match('/') ) { |
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884 Spaces(in); |
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885 exp = exp.expr(); |
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886 ExpString exp2 = required(UnaryExpr(in)).expr(); |
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887 ExpString newExp = new ExpString(true,false); |
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888 newExp.list.add( "LuanImpl.div(luan," ); |
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diff
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889 newExp.list.addAll( exp.list ); |
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890 newExp.list.add( "," ); |
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891 newExp.list.addAll( exp2.list ); |
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892 newExp.list.add( ")" ); |
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893 exp = newExp; |
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894 } else if( Mod() ) { |
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895 Spaces(in); |
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896 exp = exp.expr(); |
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897 ExpString exp2 = required(UnaryExpr(in)).expr(); |
666
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898 ExpString newExp = new ExpString(true,false); |
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899 newExp.list.add( "LuanImpl.mod(luan," ); |
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900 newExp.list.addAll( exp.list ); |
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901 newExp.list.add( "," ); |
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902 newExp.list.addAll( exp2.list ); |
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903 newExp.list.add( ")" ); |
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904 exp = newExp; |
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905 } else |
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906 break; |
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907 } |
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908 return parser.success(exp); |
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|
909 } |
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910 |
107
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|
911 private boolean Mod() { |
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912 parser.begin(); |
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913 return parser.match('%') && !parser.match('>') ? parser.success() : parser.failure(); |
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914 } |
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915 |
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916 private ExpString UnaryExpr(In in) throws ParseException { |
645 | 917 parser.begin(); |
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|
918 if( parser.match('#') ) { |
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919 Spaces(in); |
649
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920 ExpString exp = required(UnaryExpr(in)).expr(); |
666
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921 ExpString newExp = new ExpString(true,false); |
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922 newExp.list.add( "LuanImpl.len(luan," ); |
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|
923 newExp.list.addAll( exp.list ); |
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|
924 newExp.list.add( ")" ); |
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925 return parser.success(newExp); |
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926 } |
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|
927 if( Minus() ) { |
129
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928 Spaces(in); |
649
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|
929 ExpString exp = required(UnaryExpr(in)).expr(); |
666
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diff
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|
930 ExpString newExp = new ExpString(true,false); |
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parents:
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diff
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931 newExp.list.add( "LuanImpl.unm(luan," ); |
2f449ccf54d2
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parents:
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diff
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|
932 newExp.list.addAll( exp.list ); |
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665
diff
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|
933 newExp.list.add( ")" ); |
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diff
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|
934 return parser.success(newExp); |
104
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|
935 } |
129
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936 if( Keyword("not",in) ) { |
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|
937 Spaces(in); |
649
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diff
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|
938 ExpString exp = required(UnaryExpr(in)).expr(); |
666
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diff
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|
939 ExpString newExp = new ExpString(true,false); |
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parents:
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diff
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|
940 newExp.list.add( "!Luan.checkBoolean(" ); |
2f449ccf54d2
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parents:
665
diff
changeset
|
941 newExp.list.addAll( exp.list ); |
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665
diff
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|
942 newExp.list.add( ")" ); |
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665
diff
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|
943 return parser.success(newExp); |
104
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|
944 } |
650
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diff
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|
945 ExpString exp = PowExpr(in); |
104
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946 if( exp==null ) |
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|
947 return parser.failure(null); |
650
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diff
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|
948 return parser.success(exp); |
104
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949 } |
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950 |
650
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diff
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|
951 private ExpString PowExpr(In in) throws ParseException { |
645 | 952 parser.begin(); |
657 | 953 ExpString exp1 = SingleExpr(in); |
954 if( exp1==null ) | |
104
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955 return parser.failure(null); |
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|
956 if( parser.match('^') ) { |
129
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957 Spaces(in); |
650
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|
958 ExpString exp2 = required(PowExpr(in)); |
666
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diff
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|
959 ExpString newExp = new ExpString(true,false); |
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parents:
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diff
changeset
|
960 newExp.list.add( "LuanImpl.pow(luan," ); |
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665
diff
changeset
|
961 newExp.list.addAll( exp1.expr().list ); |
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diff
changeset
|
962 newExp.list.add( "," ); |
2f449ccf54d2
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diff
changeset
|
963 newExp.list.addAll( exp2.expr().list ); |
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diff
changeset
|
964 newExp.list.add( ")" ); |
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diff
changeset
|
965 exp1 = newExp; |
104
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966 } |
650
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diff
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|
967 return parser.success(exp1); |
14
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|
968 } |
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969 |
657 | 970 private ExpString SingleExpr(In in) throws ParseException { |
104
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|
971 parser.begin(); |
665 | 972 ExpString es = FunctionExpr(in); |
657 | 973 if( es != null ) |
974 return parser.success(es); | |
665 | 975 es = VarExp(in); |
976 if( es != null ) | |
977 return parser.success(es); | |
978 Expressions exp = VarArgs(in); | |
104
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979 if( exp != null ) |
657 | 980 return parser.success(new ExpString(exp)); |
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981 return parser.failure(null); |
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982 } |
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983 |
665 | 984 private ExpString FunctionExpr(In in) throws ParseException { |
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985 if( !Keyword("function",in) ) |
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986 return null; |
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987 return RequiredFunction(in); |
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988 } |
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989 |
665 | 990 private ExpString RequiredFunction(In in) throws ParseException { |
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991 int start = parser.begin(); |
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992 RequiredMatch('('); |
129
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993 In inParens = in.parens(); |
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994 Spaces(inParens); |
104
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995 frame = new Frame(frame); |
129
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996 List<String> names = NameList(in); |
104
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997 if( names != null ) { |
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998 addSymbols(names); |
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999 if( parser.match(',') ) { |
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1000 Spaces(inParens); |
104
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1001 if( !parser.match("...") ) |
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1002 throw parser.exception(); |
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1003 Spaces(inParens); |
104
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1004 frame.isVarArg = true; |
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1005 } |
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1006 } else if( parser.match("...") ) { |
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1007 Spaces(inParens); |
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1008 frame.isVarArg = true; |
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1009 } |
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1010 RequiredMatch(')'); |
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1011 Spaces(in); |
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1012 StmtString block = RequiredBlock(); |
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1013 RequiredKeyword("end",in); |
665 | 1014 ExpString fnDef = newFnExpStr(start,block); |
104
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1015 frame = frame.parent; |
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1016 return parser.success(fnDef); |
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1017 } |
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1018 |
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1019 private VarArgs VarArgs(In in) throws ParseException { |
645 | 1020 parser.begin(); |
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1021 if( !frame.isVarArg || !parser.match("...") ) |
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1022 return parser.failure(null); |
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1023 Spaces(in); |
645 | 1024 return parser.success( new VarArgs() ); |
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1025 } |
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1026 |
655 | 1027 private ExpString TableExpr(In in) throws ParseException { |
645 | 1028 parser.begin(); |
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1029 if( !parser.match('{') ) |
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1030 return parser.failure(null); |
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1031 Spaces(In.NOTHING); |
655 | 1032 List<ExpString> builder = new ArrayList<ExpString>(); |
1033 Field(builder); | |
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1034 while( FieldSep() ) { |
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1035 Spaces(In.NOTHING); |
655 | 1036 Field(builder); |
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1037 } |
655 | 1038 ExpString exp = TemplateExpressions(In.NOTHING); |
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1039 if( exp != null ) |
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1040 builder.add(exp); |
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1041 if( !parser.match('}') ) |
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1042 throw parser.exception("Expected table element or '}'"); |
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1043 Spaces(in); |
666
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1044 exp = new ExpString(true,false); |
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1045 exp.list.add( "LuanImpl.table(" ); |
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1046 exp.list.addAll( expString(builder).list ); |
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1047 exp.list.add( ")" ); |
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1048 return parser.success( exp ); |
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1049 } |
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1050 |
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1051 private boolean FieldSep() throws ParseException { |
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1052 return parser.anyOf(",;") || EndOfLine(); |
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1053 } |
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1054 |
655 | 1055 private boolean Field(List<ExpString> builder) throws ParseException { |
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1056 parser.begin(); |
656 | 1057 ExpString exp = SubExpr(In.NOTHING); |
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1058 if( exp==null ) |
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1059 exp = NameExpr(In.NOTHING); |
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1060 if( exp!=null && parser.match('=') ) { |
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1061 Spaces(In.NOTHING); |
655 | 1062 ExpString val = RequiredExpr(In.NOTHING).expr(); |
666
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1063 ExpString newExp = new ExpString(true,false); |
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1064 newExp.list.add( "new TableField(" ); |
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1065 newExp.list.addAll( exp.list ); |
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1066 newExp.list.add( "," ); |
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1067 newExp.list.addAll( val.list ); |
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1068 newExp.list.add( ")" ); |
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1069 builder.add( newExp ); |
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1070 return parser.success(); |
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1071 } |
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1072 parser.rollback(); |
655 | 1073 ExpString exprs = ExprZ(In.NOTHING); |
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1074 if( exprs != null ) { |
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1075 builder.add(exprs); |
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1076 return parser.success(); |
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1077 } |
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1078 return parser.failure(); |
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1079 } |
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1080 |
656 | 1081 private ExpString VarExp(In in) throws ParseException { |
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1082 Var var = VarZ(in); |
656 | 1083 return var==null ? null : var.exp(); |
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1084 } |
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1085 |
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1086 private Var VarZ(In in) throws ParseException { |
645 | 1087 parser.begin(); |
1088 Var var = VarStart(in); | |
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1089 if( var==null ) |
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1090 return parser.failure(null); |
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1091 Var var2; |
656 | 1092 while( (var2=Var2(in,var.exp())) != null ) { |
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1093 var = var2; |
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1094 } |
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1095 return parser.success(var); |
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1096 } |
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1097 |
645 | 1098 private Var VarStart(In in) throws ParseException { |
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1099 if( parser.match('(') ) { |
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1100 In inParens = in.parens(); |
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1101 Spaces(inParens); |
656 | 1102 ExpString exp = RequiredExpr(inParens).expr(); |
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1103 RequiredMatch(')'); |
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1104 Spaces(in); |
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1105 return exprVar(exp); |
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1106 } |
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1107 String name = Name(in); |
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1108 if( name != null ) |
645 | 1109 return nameVar(name); |
656 | 1110 ExpString exp; |
1111 exp = TableExpr(in); | |
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1112 if( exp != null ) |
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1113 return exprVar(exp); |
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1114 exp = Literal(in); |
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1115 if( exp != null ) |
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1116 return exprVar(exp); |
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1117 return null; |
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1118 } |
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1119 |
656 | 1120 private Var Var2(In in,ExpString exp1) throws ParseException { |
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1121 parser.begin(); |
656 | 1122 ExpString exp2 = SubExpr(in); |
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1123 if( exp2 != null ) |
656 | 1124 return parser.success(indexVar(exp1,exp2)); |
104
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1125 if( parser.match('.') ) { |
129
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1126 Spaces(in); |
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1127 exp2 = NameExpr(in); |
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1128 if( exp2!=null ) |
656 | 1129 return parser.success(indexVar(exp1,exp2)); |
636 | 1130 return parser.failure(null); |
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1131 } |
656 | 1132 ExpString fnCall = Args( in, exp1, new ArrayList<ExpString>() ); |
206
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1133 if( fnCall != null ) |
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1134 return parser.success(exprVar(fnCall)); |
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1135 return parser.failure(null); |
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1136 } |
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1137 |
503 | 1138 private interface Var { |
656 | 1139 public ExpString exp() throws ParseException; |
660 | 1140 // public Settable settable() throws ParseException; |
1141 public boolean isSettable(); | |
1142 public StmtString set(ExpString val) throws ParseException; | |
503 | 1143 } |
1144 | |
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1145 private Expr env() { |
34
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1146 int index = stackIndex(_ENV); |
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1147 if( index != -1 ) |
645 | 1148 return new GetLocalVar(index); |
34
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1149 index = upValueIndex(_ENV); |
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1150 if( index != -1 ) |
645 | 1151 return new GetUpVar(index); |
503 | 1152 return null; |
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1153 } |
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1154 |
645 | 1155 private Var nameVar(final String name) { |
104
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1156 return new Var() { |
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1157 |
656 | 1158 public ExpString exp() throws ParseException { |
104
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1159 int index = stackIndex(name); |
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1160 if( index != -1 ) |
656 | 1161 return new ExpString(new GetLocalVar(index)); |
104
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1162 index = upValueIndex(name); |
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1163 if( index != -1 ) |
656 | 1164 return new ExpString(new GetUpVar(index)); |
503 | 1165 Expr envExpr = env(); |
1166 if( envExpr != null ) | |
656 | 1167 return indexExpStr( new ExpString(envExpr), constExpStr(name) ); |
503 | 1168 parser.failure(null); |
1169 throw parser.exception("name '"+name+"' not defined"); | |
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1170 } |
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1171 |
660 | 1172 public boolean isSettable() { |
1173 return true; | |
1174 } | |
1175 | |
1176 private Settable settable() throws ParseException { | |
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1177 int index = stackIndex(name); |
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1178 if( index != -1 ) |
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1179 return new SetLocalVar(index); |
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1180 index = upValueIndex(name); |
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1181 if( index != -1 ) |
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1182 return new SetUpVar(index); |
503 | 1183 Expr envExpr = env(); |
1184 if( envExpr != null ) | |
645 | 1185 return new SetTableEntry( envExpr, new ConstExpr(name) ); |
503 | 1186 parser.failure(null); |
1187 throw parser.exception("name '"+name+"' not defined"); | |
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1188 } |
660 | 1189 |
1190 public StmtString set(ExpString val) throws ParseException { | |
666
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1191 StmtString stmt = new StmtString(); |
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1192 stmt.list.add( settableToString(settable()) + ".set(luan," ); |
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1193 stmt.list.addAll( val.expr().list ); |
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1194 stmt.list.add( ");\n" ); |
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1195 return stmt; |
660 | 1196 } |
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1197 }; |
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1198 } |
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1199 |
656 | 1200 private Var exprVar(final ExpString expr) { |
104
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1201 return new Var() { |
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1202 |
656 | 1203 public ExpString exp() { |
104
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1204 return expr; |
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1205 } |
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1206 |
660 | 1207 public boolean isSettable() { |
1208 return false; | |
1209 } | |
1210 | |
1211 public StmtString set(ExpString val) { | |
1212 throw new RuntimeException(); | |
104
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1213 } |
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1214 }; |
11
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1215 } |
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1216 |
656 | 1217 private Var indexVar(final ExpString table,final ExpString key) { |
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1218 return new Var() { |
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1219 |
656 | 1220 public ExpString exp() { |
1221 return indexExpStr( table, key ); | |
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1222 } |
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1223 |
660 | 1224 public boolean isSettable() { |
1225 return true; | |
1226 } | |
1227 /* | |
104
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1228 public Settable settable() { |
656 | 1229 return new SetTableEntry(expr(LuanParser.exp(table)),expr(LuanParser.exp(key))); |
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1230 } |
660 | 1231 */ |
1232 public StmtString set(ExpString val) { | |
666
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1233 StmtString stmt = new StmtString(); |
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1234 stmt.list.add( "LuanImpl.put(luan," ); |
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1235 stmt.list.addAll( table.expr().list ); |
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1236 stmt.list.add( "," ); |
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1237 stmt.list.addAll( key.expr().list ); |
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1238 stmt.list.add( "," ); |
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1239 stmt.list.addAll( val.expr().list ); |
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1240 stmt.list.add( ");\n" ); |
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1241 return stmt; |
660 | 1242 } |
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1243 }; |
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1244 } |
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1245 |
656 | 1246 private ExpString Args(In in,ExpString fn,List<ExpString> builder) throws ParseException { |
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1247 parser.begin(); |
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1248 return args(in,builder) |
656 | 1249 ? parser.success( callExpStr( fn, expString(builder) ) ) |
1250 : parser.failure((ExpString)null); | |
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1251 } |
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1252 |
652
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1253 private boolean args(In in,List<ExpString> builder) throws ParseException { |
645 | 1254 parser.begin(); |
104
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1255 if( parser.match('(') ) { |
129
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1256 In inParens = in.parens(); |
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1257 Spaces(inParens); |
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1258 ExpList(inParens,builder); // optional |
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1259 if( !parser.match(')') ) |
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1260 throw parser.exception("Expression or ')' expected"); |
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1261 Spaces(in); |
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1262 return parser.success(); |
107
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1263 } |
655 | 1264 ExpString exp = TableExpr(in); |
107
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1265 if( exp != null ) { |
655 | 1266 builder.add(exp); |
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1267 return parser.success(); |
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1268 } |
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1269 String s = StringLiteral(in); |
107
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1270 if( s != null ) { |
657 | 1271 builder.add( constExpStr(s) ); |
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1272 return parser.success(); |
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1273 } |
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1274 /* |
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1275 Expressions exps = TemplateExpressions(in); |
107
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1276 if( exps != null ) { |
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1277 builder.add(exps); |
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1278 return parser.success(); |
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1279 } |
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1280 */ |
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1281 return parser.failure(); |
11
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1282 } |
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1283 |
652
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1284 private ExpString ExpStringList(In in) throws ParseException { |
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1285 List<ExpString> builder = new ArrayList<ExpString>(); |
654 | 1286 return ExpList(in,builder) ? expString(builder) : null; |
652
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1287 } |
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1288 |
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1289 private boolean ExpList(In in,List<ExpString> builder) throws ParseException { |
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1290 parser.begin(); |
654 | 1291 ExpString exp = TemplateExpressions(in); |
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1292 if( exp != null ) { |
654 | 1293 builder.add(exp); |
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1294 return parser.success(); |
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1295 } |
654 | 1296 exp = ExprZ(in); |
1297 if( exp==null ) | |
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1298 return parser.failure(); |
654 | 1299 builder.add(exp); |
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1300 while( parser.match(',') ) { |
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1301 Spaces(in); |
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1302 exp = TemplateExpressions(in); |
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1303 if( exp != null ) { |
654 | 1304 builder.add(exp); |
158
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1305 return parser.success(); |
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1306 } |
652
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1307 builder.add( RequiredExpr(in) ); |
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1308 } |
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1309 return parser.success(); |
9
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1310 } |
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1311 |
656 | 1312 private ExpString SubExpr(In in) throws ParseException { |
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1313 parser.begin(); |
209
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1314 if( !parser.match('[') || parser.test("[") || parser.test("=") ) |
104
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1315 return parser.failure(null); |
604
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1316 Spaces(In.NOTHING); |
656 | 1317 ExpString exp = RequiredExpr(In.NOTHING).expr(); |
104
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1318 RequiredMatch(']'); |
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1319 Spaces(in); |
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1320 return parser.success(exp); |
11
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1321 } |
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1322 |
656 | 1323 private ExpString NameExpr(In in) throws ParseException { |
645 | 1324 parser.begin(); |
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1325 String name = Name(in); |
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1326 if( name==null ) |
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1327 return parser.failure(null); |
656 | 1328 return parser.success(constExpStr(name)); |
54
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1329 } |
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1330 |
129
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1331 private String RequiredName(In in) throws ParseException { |
104
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1332 parser.begin(); |
129
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1333 String name = Name(in); |
104
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1334 if( name==null ) |
139
3b384dc5ca91
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1335 throw parser.exception("Name expected"); |
104
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1336 return parser.success(name); |
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1337 } |
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1338 |
129
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1339 private String Name(In in) throws ParseException { |
104
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1340 int start = parser.begin(); |
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1341 if( !NameFirstChar() ) |
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1342 return parser.failure(null); |
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1343 while( NameChar() ); |
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1344 String match = parser.textFrom(start); |
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1345 if( keywords.contains(match) ) |
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1346 return parser.failure(null); |
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1347 Spaces(in); |
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1348 return parser.success(match); |
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1349 } |
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1350 |
104
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1351 private boolean NameChar() { |
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1352 return NameFirstChar() || Digit(); |
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1353 } |
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1354 |
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1355 private boolean NameFirstChar() { |
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1356 return parser.inCharRange('a', 'z') || parser.inCharRange('A', 'Z') || parser.match('_'); |
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1357 } |
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1358 |
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1359 private void RequiredMatch(char c) throws ParseException { |
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1360 if( !parser.match(c) ) |
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1361 throw parser.exception("'"+c+"' expected"); |
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1362 } |
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1363 |
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1364 private void RequiredMatch(String s) throws ParseException { |
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1365 if( !parser.match(s) ) |
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1366 throw parser.exception("'"+s+"' expected"); |
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1367 } |
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1368 |
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1369 private void RequiredKeyword(String keyword,In in) throws ParseException { |
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1370 if( !Keyword(keyword,in) ) |
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1371 throw parser.exception("'"+keyword+"' expected"); |
9
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1372 } |
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1373 |
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1374 private boolean Keyword(String keyword,In in) throws ParseException { |
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1375 parser.begin(); |
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1376 if( !parser.match(keyword) || NameChar() ) |
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1377 return parser.failure(); |
129
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1378 Spaces(in); |
104
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1379 return parser.success(); |
12
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1380 } |
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1381 |
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1382 private static final Set<String> keywords = new HashSet<String>(Arrays.asList( |
12
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1383 "and", |
9cea1aea5eef
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1384 "break", |
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1385 "do", |
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1386 "else", |
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1387 "elseif", |
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1388 "end", |
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1389 "false", |
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1390 "for", |
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1391 "function", |
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1392 "goto", |
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1393 "if", |
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1394 "in", |
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1395 "local", |
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1396 "nil", |
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1397 "not", |
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1398 "or", |
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1399 "repeat", |
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1400 "return", |
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1401 "then", |
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1402 "true", |
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1403 "until", |
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1404 "while" |
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1405 )); |
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1406 |
656 | 1407 private ExpString Literal(In in) throws ParseException { |
645 | 1408 parser.begin(); |
666
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1409 if( NilLiteral(in) ) { |
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1410 ExpString exp = new ExpString(true,false); |
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1411 exp.list.add( "null" ); |
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1412 return parser.success(exp); |
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1413 } |
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1414 Boolean b = BooleanLiteral(in); |
666
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1415 if( b != null ) { |
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1416 ExpString exp = new ExpString(true,false); |
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1417 exp.list.add( b.toString() ); |
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1418 return parser.success(exp); |
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1419 } |
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1420 Number n = NumberLiteral(in); |
657 | 1421 if( n != null ) { |
1422 String s = n.toString(); | |
1423 if( n instanceof Long ) | |
1424 s += "L"; | |
666
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|
1425 ExpString exp = new ExpString(true,false); |
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|
1426 exp.list.add( s ); |
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1427 return parser.success(exp); |
657 | 1428 } |
129
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1429 String s = StringLiteral(in); |
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1430 if( s != null ) |
656 | 1431 return parser.success(constExpStr(s)); |
195
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1432 return parser.failure(null); |
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|
1433 } |
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|
1434 |
664 | 1435 private ExpString constExpStr(String s) { |
1436 s = s | |
1437 .replace("\\","\\\\") | |
1438 .replace("\"","\\\"") | |
1439 .replace("\n","\\n") | |
1440 .replace("\r","\\r") | |
1441 .replace("\t","\\t") | |
1442 .replace("\b","\\b") | |
1443 ; | |
666
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1444 ExpString exp = new ExpString(true,false); |
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|
1445 exp.list.add( "\""+s+"\"" ); |
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1446 return exp; |
664 | 1447 } |
1448 | |
129
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1449 private boolean NilLiteral(In in) throws ParseException { |
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1450 return Keyword("nil",in); |
65
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1451 } |
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1452 |
129
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1453 private Boolean BooleanLiteral(In in) throws ParseException { |
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1454 if( Keyword("true",in) ) |
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1455 return true; |
129
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1456 if( Keyword("false",in) ) |
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1457 return false; |
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1458 return null; |
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1459 } |
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1460 |
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1461 private Number NumberLiteral(In in) throws ParseException { |
104
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1462 parser.begin(); |
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1463 Number n; |
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1464 if( parser.matchIgnoreCase("0x") ) { |
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1465 n = HexNumber(); |
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1466 } else { |
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1467 n = DecNumber(); |
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1468 } |
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1469 if( n==null || NameChar() ) |
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1470 return parser.failure(null); |
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1471 Spaces(in); |
104
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1472 return parser.success(n); |
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1473 } |
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1474 |
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1475 private Number DecNumber() { |
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1476 int start = parser.begin(); |
535
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1477 boolean isInt = true; |
104
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1478 if( Int() ) { |
535
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|
1479 if( parser.match('.') ) { |
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1480 isInt = false; |
104
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1481 Int(); // optional |
535
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1482 } |
104
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1483 } else if( parser.match('.') && Int() ) { |
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|
1484 // ok |
535
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1485 isInt = false; |
104
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|
1486 } else |
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1487 return parser.failure(null); |
535
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1488 if( Exponent() ) // optional |
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1489 isInt = false; |
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1490 String s = parser.textFrom(start); |
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1491 if( isInt ) { |
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|
1492 try { |
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1493 return parser.success(Integer.valueOf(s)); |
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|
1494 } catch(NumberFormatException e) {} |
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parse numeric constants to ints or longs if possible
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|
1495 try { |
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1496 return parser.success(Long.valueOf(s)); |
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1497 } catch(NumberFormatException e) {} |
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|
1498 } |
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1499 return parser.success(Double.valueOf(s)); |
5
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1500 } |
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1501 |
104
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1502 private boolean Exponent() { |
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1503 parser.begin(); |
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1504 if( !parser.matchIgnoreCase("e") ) |
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1505 return parser.failure(); |
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|
1506 parser.anyOf("+-"); // optional |
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1507 if( !Int() ) |
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1508 return parser.failure(); |
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1509 return parser.success(); |
5
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|
1510 } |
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1511 |
104
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1512 private boolean Int() { |
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1513 if( !Digit() ) |
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1514 return false; |
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1515 while( Digit() ); |
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1516 return true; |
5
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1517 } |
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1518 |
104
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1519 private boolean Digit() { |
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1520 return parser.inCharRange('0', '9'); |
16
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diff
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|
1521 } |
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1522 |
104
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1523 private Number HexNumber() { |
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1524 int start = parser.begin(); |
535
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1525 long nLong = 0; |
104
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1526 double n; |
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1527 if( HexInt() ) { |
535
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parse numeric constants to ints or longs if possible
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|
1528 nLong = Long.parseLong(parser.textFrom(start),16); |
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parse numeric constants to ints or longs if possible
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|
1529 n = (double)nLong; |
104
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|
1530 if( parser.match('.') ) { |
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1531 start = parser.currentIndex(); |
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|
1532 if( HexInt() ) { |
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1533 String dec = parser.textFrom(start); |
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1534 n += (double)Long.parseLong(dec,16) / Math.pow(16,dec.length()); |
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1535 } |
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|
1536 } |
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|
1537 } else if( parser.match('.') && HexInt() ) { |
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1538 String dec = parser.textFrom(start+1); |
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1539 n = (double)Long.parseLong(dec,16) / Math.pow(16,dec.length()); |
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|
1540 } else { |
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|
1541 return parser.failure(null); |
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|
1542 } |
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|
1543 if( parser.matchIgnoreCase("p") ) { |
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|
1544 parser.anyOf("+-"); // optional |
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|
1545 start = parser.currentIndex(); |
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|
1546 if( !HexInt() ) |
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|
1547 return parser.failure(null); |
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|
1548 n *= Math.pow(2,(double)Long.parseLong(parser.textFrom(start))); |
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|
1549 } |
535
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|
1550 if( nLong == n ) { |
289908469e02
parse numeric constants to ints or longs if possible
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|
1551 int nInt = (int)nLong; |
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|
1552 if( nInt == nLong ) |
289908469e02
parse numeric constants to ints or longs if possible
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|
1553 return parser.success(Integer.valueOf(nInt)); |
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|
1554 return parser.success(Long.valueOf(nLong)); |
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|
1555 } |
104
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1556 return parser.success(Double.valueOf(n)); |
16
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|
1557 } |
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|
1558 |
104
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1559 private boolean HexInt() { |
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1560 if( !HexDigit() ) |
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|
1561 return false; |
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|
1562 while( HexDigit() ); |
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|
1563 return true; |
16
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diff
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|
1564 } |
2a30281ef47c
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|
1565 |
2a30281ef47c
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|
1566 |
104
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|
1567 private boolean HexDigit() { |
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|
1568 return Digit() || parser.anyOf("abcdefABCDEF"); |
6
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diff
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|
1569 } |
a315783c9524
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|
1570 |
129
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|
1571 private String StringLiteral(In in) throws ParseException { |
104
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|
1572 String s; |
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1573 if( (s=QuotedString('"'))==null |
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|
1574 && (s=QuotedString('\''))==null |
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1575 && (s=LongString())==null |
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1576 ) |
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1577 return null; |
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1578 Spaces(in); |
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1579 return s; |
16
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finish number literals;
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|
1580 } |
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finish number literals;
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1581 |
104
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1582 private String LongString() throws ParseException { |
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1583 parser.begin(); |
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1584 if( !parser.match('[') ) |
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1585 return parser.failure(null); |
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1586 int start = parser.currentIndex(); |
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1587 while( parser.match('=') ); |
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1588 int nEquals = parser.currentIndex() - start; |
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1589 if( !parser.match('[') ) |
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1590 return parser.failure(null); |
120
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1591 EndOfLine(); |
104
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1592 start = parser.currentIndex(); |
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1593 while( !LongBracketsEnd(nEquals) ) { |
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1594 if( !parser.anyChar() ) |
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1595 throw parser.exception("Unclosed long string"); |
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1596 } |
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1597 String s = parser.text.substring( start, parser.currentIndex() - nEquals - 2 ); |
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1598 return parser.success(s); |
6
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1599 } |
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1600 |
104
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1601 private String QuotedString(char quote) throws ParseException { |
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1602 parser.begin(); |
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1603 if( !parser.match(quote) ) |
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1604 return parser.failure(null); |
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1605 StringBuilder buf = new StringBuilder(); |
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1606 while( !parser.match(quote) ) { |
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1607 Character c = EscSeq(); |
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1608 if( c != null ) { |
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1609 buf.append(c); |
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1610 } else { |
271
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1611 if( parser.test('\r') || parser.test('\n') || !parser.anyChar() ) |
104
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1612 throw parser.exception("Unclosed string"); |
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1613 buf.append(parser.lastChar()); |
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1614 } |
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1615 } |
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1616 return parser.success(buf.toString()); |
6
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1617 } |
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1618 |
104
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1619 private Character EscSeq() { |
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1620 parser.begin(); |
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1621 if( !parser.match('\\') ) |
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1622 return parser.failure(null); |
155
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1623 if( parser.match('a') ) return parser.success('\u0007'); |
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1624 if( parser.match('b') ) return parser.success('\b'); |
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1625 if( parser.match('f') ) return parser.success('\f'); |
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1626 if( parser.match('n') ) return parser.success('\n'); |
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1627 if( parser.match('r') ) return parser.success('\r'); |
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1628 if( parser.match('t') ) return parser.success('\t'); |
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1629 if( parser.match('v') ) return parser.success('\u000b'); |
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1630 if( parser.match('\\') ) return parser.success('\\'); |
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1631 if( parser.match('"') ) return parser.success('"'); |
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1632 if( parser.match('\'') ) return parser.success('\''); |
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1633 int start = parser.currentIndex(); |
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1634 if( parser.match('x') && HexDigit() && HexDigit() ) |
155
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1635 return parser.success((char)Integer.parseInt(parser.textFrom(start+1),16)); |
104
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1636 if( Digit() ) { |
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1637 if( Digit() ) Digit(); // optional |
155
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1638 return parser.success((char)Integer.parseInt(parser.textFrom(start))); |
104
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1639 } |
271
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1640 if( EndOfLine() ) |
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1641 return parser.success('\n'); |
104
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|
1642 return parser.failure(null); |
14
2ddf85634d20
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|
1643 } |
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1644 |
129
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|
1645 private void Spaces(In in) throws ParseException { |
247
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1646 while( parser.anyOf(" \t") || Comment() || ContinueOnNextLine() || in.parens && EndOfLine() ); |
14
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|
1647 } |
2ddf85634d20
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1648 |
104
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1649 private boolean ContinueOnNextLine() { |
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|
1650 parser.begin(); |
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|
1651 return parser.match('\\') && EndOfLine() ? parser.success() : parser.failure(); |
7
bca8fc5d928b
work on expressions
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|
1652 } |
bca8fc5d928b
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1653 |
247
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1654 private boolean Comment() throws ParseException { |
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1655 if( LongComment() ) |
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1656 return true; |
104
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1657 if( parser.match("--") ) { |
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1658 while( parser.noneOf("\r\n") ); |
247
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1659 return true; |
104
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1660 } |
247
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1661 return false; |
18
3971113699b8
add NumericForStmt
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|
1662 } |
3971113699b8
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1663 |
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1664 private boolean LongComment() throws ParseException { |
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changeset
|
1665 parser.begin(); |
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remove parboiled and rewrite parser;
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parents:
99
diff
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|
1666 if( !parser.match("--[") ) |
754e6030c029
remove parboiled and rewrite parser;
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99
diff
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|
1667 return parser.failure(); |
754e6030c029
remove parboiled and rewrite parser;
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parents:
99
diff
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|
1668 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
|
1669 while( parser.match('=') ); |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
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|
1670 int nEquals = parser.currentIndex() - start; |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1671 if( !parser.match('[') ) |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
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|
1672 return parser.failure(); |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1673 while( !LongBracketsEnd(nEquals) ) { |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1674 if( !parser.anyChar() ) |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1675 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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|
1676 } |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1677 return parser.success(); |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
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|
1678 } |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1679 |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
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|
1680 private boolean LongBracketsEnd(int nEquals) { |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1681 parser.begin(); |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1682 if( !parser.match(']') ) |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1683 return parser.failure(); |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1684 while( nEquals-- > 0 ) { |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1685 if( !parser.match('=') ) |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1686 return parser.failure(); |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
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|
1687 } |
754e6030c029
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parents:
99
diff
changeset
|
1688 if( !parser.match(']') ) |
754e6030c029
remove parboiled and rewrite parser;
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parents:
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diff
changeset
|
1689 return parser.failure(); |
754e6030c029
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parents:
99
diff
changeset
|
1690 return parser.success(); |
12
9cea1aea5eef
CmdLine can run files
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
11
diff
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|
1691 } |
9cea1aea5eef
CmdLine can run files
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
11
diff
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|
1692 |
648
e387e4021afe
start compiler with len operator
Franklin Schmidt <fschmidt@gmail.com>
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645
diff
changeset
|
1693 |
e387e4021afe
start compiler with len operator
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645
diff
changeset
|
1694 |
e387e4021afe
start compiler with len operator
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645
diff
changeset
|
1695 |
e387e4021afe
start compiler with len operator
Franklin Schmidt <fschmidt@gmail.com>
parents:
645
diff
changeset
|
1696 private static int classCounter = 0; |
e387e4021afe
start compiler with len operator
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parents:
645
diff
changeset
|
1697 |
649
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1698 private class ExpString { |
666
2f449ccf54d2
use lists to assemble source
Franklin Schmidt <fschmidt@gmail.com>
parents:
665
diff
changeset
|
1699 final List list = new ArrayList(); |
649
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1700 final boolean isExpr; |
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1701 final boolean isStmt; |
37f0cf43f191
UnaryExpr now compiled
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parents:
648
diff
changeset
|
1702 |
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1703 ExpString(Expressions exp) { |
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1704 if( exp==null ) throw new NullPointerException(); |
664 | 1705 int i = LuanImpl.addObj(exp); |
666
2f449ccf54d2
use lists to assemble source
Franklin Schmidt <fschmidt@gmail.com>
parents:
665
diff
changeset
|
1706 list.add( "((Expressions)LuanImpl.getObj(" + i + ")).eval(luan)" ); |
649
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1707 isExpr = exp instanceof Expr; |
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1708 isStmt = exp instanceof StmtExp; |
37f0cf43f191
UnaryExpr now compiled
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parents:
648
diff
changeset
|
1709 } |
37f0cf43f191
UnaryExpr now compiled
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parents:
648
diff
changeset
|
1710 |
666
2f449ccf54d2
use lists to assemble source
Franklin Schmidt <fschmidt@gmail.com>
parents:
665
diff
changeset
|
1711 ExpString(boolean isExpr,boolean isStmt) { |
649
37f0cf43f191
UnaryExpr now compiled
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parents:
648
diff
changeset
|
1712 this.isExpr = isExpr; |
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1713 this.isStmt = isStmt; |
37f0cf43f191
UnaryExpr now compiled
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parents:
648
diff
changeset
|
1714 } |
37f0cf43f191
UnaryExpr now compiled
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parents:
648
diff
changeset
|
1715 |
37f0cf43f191
UnaryExpr now compiled
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parents:
648
diff
changeset
|
1716 ExpString expr() { |
666
2f449ccf54d2
use lists to assemble source
Franklin Schmidt <fschmidt@gmail.com>
parents:
665
diff
changeset
|
1717 if( isExpr ) |
2f449ccf54d2
use lists to assemble source
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parents:
665
diff
changeset
|
1718 return this; |
2f449ccf54d2
use lists to assemble source
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parents:
665
diff
changeset
|
1719 ExpString exp = new ExpString(true,isStmt); |
2f449ccf54d2
use lists to assemble source
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parents:
665
diff
changeset
|
1720 exp.list.addAll( list ); |
2f449ccf54d2
use lists to assemble source
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parents:
665
diff
changeset
|
1721 return exp; |
649
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1722 } |
650
d658eab7bf4c
finish compiling operators
Franklin Schmidt <fschmidt@gmail.com>
parents:
649
diff
changeset
|
1723 } |
d658eab7bf4c
finish compiling operators
Franklin Schmidt <fschmidt@gmail.com>
parents:
649
diff
changeset
|
1724 |
654 | 1725 private ExpString expString(List<ExpString> list) { |
666
2f449ccf54d2
use lists to assemble source
Franklin Schmidt <fschmidt@gmail.com>
parents:
665
diff
changeset
|
1726 ExpString exp = new ExpString(false,false); |
652
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1727 switch(list.size()) { |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1728 case 0: |
666
2f449ccf54d2
use lists to assemble source
Franklin Schmidt <fschmidt@gmail.com>
parents:
665
diff
changeset
|
1729 exp.list.add("LuanFunction.NOTHING"); |
2f449ccf54d2
use lists to assemble source
Franklin Schmidt <fschmidt@gmail.com>
parents:
665
diff
changeset
|
1730 return exp; |
652
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1731 case 1: |
653
538b0ae08faa
compile IfStmt and BreakStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
652
diff
changeset
|
1732 return list.get(0); |
652
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1733 default: |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1734 int lastI = list.size() - 1; |
666
2f449ccf54d2
use lists to assemble source
Franklin Schmidt <fschmidt@gmail.com>
parents:
665
diff
changeset
|
1735 exp.list.add( "new Object[]{" ); |
652
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1736 for( int i=0; i<lastI; i++ ) { |
666
2f449ccf54d2
use lists to assemble source
Franklin Schmidt <fschmidt@gmail.com>
parents:
665
diff
changeset
|
1737 exp.list.addAll( list.get(i).expr().list ); |
2f449ccf54d2
use lists to assemble source
Franklin Schmidt <fschmidt@gmail.com>
parents:
665
diff
changeset
|
1738 exp.list.add( "," ); |
652
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1739 } |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1740 ExpString last = list.get(lastI); |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1741 if( last.isExpr ) { |
666
2f449ccf54d2
use lists to assemble source
Franklin Schmidt <fschmidt@gmail.com>
parents:
665
diff
changeset
|
1742 exp.list.addAll( last.list ); |
2f449ccf54d2
use lists to assemble source
Franklin Schmidt <fschmidt@gmail.com>
parents:
665
diff
changeset
|
1743 exp.list.add( "}" ); |
652
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1744 } else { |
666
2f449ccf54d2
use lists to assemble source
Franklin Schmidt <fschmidt@gmail.com>
parents:
665
diff
changeset
|
1745 exp.list.add( "}" ); |
2f449ccf54d2
use lists to assemble source
Franklin Schmidt <fschmidt@gmail.com>
parents:
665
diff
changeset
|
1746 exp.list.add( 0, "LuanImpl.concatArgs(" ); |
2f449ccf54d2
use lists to assemble source
Franklin Schmidt <fschmidt@gmail.com>
parents:
665
diff
changeset
|
1747 exp.list.add( "," ); |
2f449ccf54d2
use lists to assemble source
Franklin Schmidt <fschmidt@gmail.com>
parents:
665
diff
changeset
|
1748 exp.list.addAll( last.list ); |
2f449ccf54d2
use lists to assemble source
Franklin Schmidt <fschmidt@gmail.com>
parents:
665
diff
changeset
|
1749 exp.list.add( ")" ); |
652
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1750 } |
666
2f449ccf54d2
use lists to assemble source
Franklin Schmidt <fschmidt@gmail.com>
parents:
665
diff
changeset
|
1751 return exp; |
652
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1752 } |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1753 } |
657 | 1754 |
651
140cc5191b7a
start compiling statements
Franklin Schmidt <fschmidt@gmail.com>
parents:
650
diff
changeset
|
1755 private static class StmtString { |
666
2f449ccf54d2
use lists to assemble source
Franklin Schmidt <fschmidt@gmail.com>
parents:
665
diff
changeset
|
1756 final List list = new ArrayList(); |
663
b438a47196bc
finish compiling function blocks
Franklin Schmidt <fschmidt@gmail.com>
parents:
662
diff
changeset
|
1757 boolean hasReturn = false; |
651
140cc5191b7a
start compiling statements
Franklin Schmidt <fschmidt@gmail.com>
parents:
650
diff
changeset
|
1758 } |
140cc5191b7a
start compiling statements
Franklin Schmidt <fschmidt@gmail.com>
parents:
650
diff
changeset
|
1759 |
666
2f449ccf54d2
use lists to assemble source
Franklin Schmidt <fschmidt@gmail.com>
parents:
665
diff
changeset
|
1760 private static FnDef toFnDef(StmtString stmt,int stackSize,int numArgs,boolean isVarArg,UpValue.Getter[] upValueGetters) { |
2f449ccf54d2
use lists to assemble source
Franklin Schmidt <fschmidt@gmail.com>
parents:
665
diff
changeset
|
1761 StringBuilder sb = new StringBuilder(); |
2f449ccf54d2
use lists to assemble source
Franklin Schmidt <fschmidt@gmail.com>
parents:
665
diff
changeset
|
1762 for( Object o : stmt.list ) { |
2f449ccf54d2
use lists to assemble source
Franklin Schmidt <fschmidt@gmail.com>
parents:
665
diff
changeset
|
1763 if( o instanceof List ) throw new RuntimeException(); |
2f449ccf54d2
use lists to assemble source
Franklin Schmidt <fschmidt@gmail.com>
parents:
665
diff
changeset
|
1764 if( o instanceof ExpString ) throw new RuntimeException(); |
2f449ccf54d2
use lists to assemble source
Franklin Schmidt <fschmidt@gmail.com>
parents:
665
diff
changeset
|
1765 if( o instanceof StmtString ) throw new RuntimeException(); |
2f449ccf54d2
use lists to assemble source
Franklin Schmidt <fschmidt@gmail.com>
parents:
665
diff
changeset
|
1766 sb.append( o.toString() ); |
2f449ccf54d2
use lists to assemble source
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parents:
665
diff
changeset
|
1767 } |
2f449ccf54d2
use lists to assemble source
Franklin Schmidt <fschmidt@gmail.com>
parents:
665
diff
changeset
|
1768 String code = sb.toString(); |
2f449ccf54d2
use lists to assemble source
Franklin Schmidt <fschmidt@gmail.com>
parents:
665
diff
changeset
|
1769 //System.out.println("code:\n"+code); |
651
140cc5191b7a
start compiling statements
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parents:
650
diff
changeset
|
1770 |
664 | 1771 int i = LuanImpl.addObj(upValueGetters); |
663
b438a47196bc
finish compiling function blocks
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parents:
662
diff
changeset
|
1772 String className = "EXP" + ++classCounter; |
b438a47196bc
finish compiling function blocks
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parents:
662
diff
changeset
|
1773 String classCode = "" |
b438a47196bc
finish compiling function blocks
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parents:
662
diff
changeset
|
1774 +"package luan.impl;\n" |
b438a47196bc
finish compiling function blocks
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parents:
662
diff
changeset
|
1775 +"import luan.Luan;\n" |
b438a47196bc
finish compiling function blocks
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parents:
662
diff
changeset
|
1776 +"import luan.LuanFunction;\n" |
b438a47196bc
finish compiling function blocks
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parents:
662
diff
changeset
|
1777 +"import luan.LuanException;\n" |
b438a47196bc
finish compiling function blocks
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parents:
662
diff
changeset
|
1778 +"import luan.modules.PackageLuan;\n" |
b438a47196bc
finish compiling function blocks
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parents:
662
diff
changeset
|
1779 +"\n" |
664 | 1780 +"public class " + className +" extends FnDef {\n" |
1781 +" public "+className+"() {\n" | |
1782 +" super("+stackSize+","+numArgs+","+isVarArg+",(UpValue.Getter[])LuanImpl.getObj("+i+"));\n" | |
1783 +" }\n" | |
1784 +"\n" | |
1785 +" @Override public Object run(LuanStateImpl luan) throws LuanException {\n" | |
663
b438a47196bc
finish compiling function blocks
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parents:
662
diff
changeset
|
1786 +" Object t;\n" |
666
2f449ccf54d2
use lists to assemble source
Franklin Schmidt <fschmidt@gmail.com>
parents:
665
diff
changeset
|
1787 +" " + code |
663
b438a47196bc
finish compiling function blocks
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662
diff
changeset
|
1788 +" }\n" |
b438a47196bc
finish compiling function blocks
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diff
changeset
|
1789 +"}\n" |
b438a47196bc
finish compiling function blocks
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parents:
662
diff
changeset
|
1790 ; |
b438a47196bc
finish compiling function blocks
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parents:
662
diff
changeset
|
1791 try { |
665 | 1792 //System.out.println(classCode); |
663
b438a47196bc
finish compiling function blocks
Franklin Schmidt <fschmidt@gmail.com>
parents:
662
diff
changeset
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1793 Class cls = LuanJavaCompiler.compile("luan.impl."+className,"code",classCode); |
664 | 1794 return (FnDef)cls.newInstance(); |
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1795 } catch(ClassNotFoundException e) { |
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1796 throw new RuntimeException(e); |
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1797 } catch(InstantiationException e) { |
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1798 throw new RuntimeException(e); |
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1799 } catch(IllegalAccessException e) { |
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1800 throw new RuntimeException(e); |
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1801 } |
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1802 } |
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1803 |
665 | 1804 private ExpString toFnExpStr(StmtString stmt,int stackSize,int numArgs,boolean isVarArg,UpValue.Getter[] upValueGetters) { |
1805 int i = LuanImpl.addObj(upValueGetters); | |
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1806 ExpString exp = new ExpString(true,false); |
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1807 exp.list.add( "" |
665 | 1808 +"\n" |
1809 +"new FnDef("+stackSize+","+numArgs+","+isVarArg+",(UpValue.Getter[])LuanImpl.getObj("+i+")) {\n" | |
1810 +" @Override public Object run(LuanStateImpl luan) throws LuanException {\n" | |
1811 +" Object t;\n" | |
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1812 +" " |
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1813 ); |
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1814 exp.list.addAll( stmt.list ); |
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1815 exp.list.add( "" |
665 | 1816 +" }\n" |
1817 +"}.eval(luan)\n" | |
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1818 ); |
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1819 return exp; |
665 | 1820 } |
1821 | |
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1822 |
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1823 private static String settableToString(Settable settable) { |
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1824 if( settable==null ) throw new NullPointerException(); |
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1825 int i = LuanImpl.addObj(settable); |
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1826 return"((Settable)LuanImpl.getObj(" + i + "))"; |
652
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1827 } |
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1828 |
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1829 } |