Mercurial Hosting > luan
annotate core/src/luan/impl/LuanParser.java @ 662:ee00a619eec1
minor
author | Franklin Schmidt <fschmidt@gmail.com> |
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date | Wed, 06 Apr 2016 21:47:45 -0600 |
parents | 1bbb08c0d8f1 |
children | b438a47196bc |
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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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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); | |
108
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108 } |
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109 |
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110 void addVar(String name,Object value) { |
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111 frame.addUpValueGetter(name,new UpValue.ValueGetter(value)); |
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112 } |
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113 |
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114 private List<String> symbols() { |
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115 return frame.symbols; |
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116 } |
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117 |
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118 private int symbolsSize() { |
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119 return frame.symbols.size(); |
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120 } |
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121 |
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122 private void addSymbol(String name) { |
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123 frame.symbols.add(name); |
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124 if( frame.stackSize < symbolsSize() ) |
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125 frame.stackSize = symbolsSize(); |
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126 } |
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127 |
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128 private void addSymbols(List<String> names) { |
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129 frame.symbols.addAll(names); |
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130 if( frame.stackSize < symbolsSize() ) |
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131 frame.stackSize = symbolsSize(); |
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132 } |
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133 |
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134 private int stackIndex(String name) { |
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135 return frame.stackIndex(name); |
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136 } |
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137 |
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138 private void popSymbols(int n) { |
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139 List<String> symbols = frame.symbols; |
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140 while( n-- > 0 ) { |
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141 symbols.remove(symbols.size()-1); |
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142 } |
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143 } |
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144 |
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145 private int upValueIndex(String name) { |
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146 return frame.upValueIndex(name); |
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147 } |
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148 |
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149 private void incLoops() { |
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150 frame.loops++; |
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151 } |
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152 |
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153 private void decLoops() { |
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154 frame.loops--; |
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155 } |
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156 |
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157 private <T> T required(T t) throws ParseException { |
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158 if( t==null ) |
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159 throw parser.exception(); |
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160 return t; |
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161 } |
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162 |
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163 private <T> T required(T t,String msg) throws ParseException { |
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164 if( t==null ) |
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165 throw parser.exception(msg); |
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166 return t; |
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167 } |
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168 |
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169 private static Expr expr(Expressions exprs) { |
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170 if( exprs==null ) |
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171 return null; |
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172 if( exprs instanceof Expr ) |
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173 return (Expr)exprs; |
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174 return new ExpressionsExpr(exprs); |
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175 } |
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176 |
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177 private FnDef newFnDef(int start,Stmt stmt) { |
645 | 178 return new FnDef( stmt, frame.stackSize, symbolsSize(), frame.isVarArg, frame.upValueGetters.toArray(NO_UP_VALUE_GETTERS) ); |
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179 } |
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180 |
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181 FnDef Expression() throws ParseException { |
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182 Spaces(In.NOTHING); |
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183 int start = parser.begin(); |
658 | 184 ExpString expr = ExprZ(In.NOTHING); |
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185 if( expr != null && parser.endOfInput() ) { |
658 | 186 String code = "luan.returnValues = " + expr.code + ";\n"; |
187 Stmt stmt = stmt( new StmtString(code) ); | |
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188 return parser.success(newFnDef(start,stmt)); |
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189 } |
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190 return parser.failure(null); |
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191 } |
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192 |
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193 FnDef RequiredModule() throws ParseException { |
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194 Spaces(In.NOTHING); |
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195 int start = parser.begin(); |
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196 frame.isVarArg = true; |
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197 Stmt stmt = stmt(RequiredBlock()); |
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198 if( parser.endOfInput() ) |
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199 return parser.success(newFnDef(start,stmt)); |
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200 throw parser.exception(); |
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201 } |
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202 |
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203 private StmtString RequiredBlock() throws ParseException { |
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204 StringBuilder stmts = new StringBuilder(); |
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205 int stackStart = symbolsSize(); |
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206 Stmt(stmts); |
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207 while( StmtSep(stmts) ) { |
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208 Spaces(In.NOTHING); |
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209 Stmt(stmts); |
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210 } |
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211 int stackEnd = symbolsSize(); |
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212 popSymbols( stackEnd - stackStart ); |
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213 if( stmts.length() == 0 ) |
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214 return EMPTY_STMT; |
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215 String code = stmts.toString(); |
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216 if( stackStart < stackEnd ) |
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217 code = "" |
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218 +"try {\n" |
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219 + code |
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220 +"} finally {\n" |
654 | 221 +" luan.stackClear("+stackStart+","+stackEnd+");\n" |
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222 +"}\n" |
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223 ; |
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224 return new StmtString(code); |
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225 } |
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226 |
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227 private boolean StmtSep(StringBuilder stmts) throws ParseException { |
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228 parser.begin(); |
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229 if( parser.match( ';' ) ) |
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230 return parser.success(); |
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231 if( EndOfLine() ) |
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232 return parser.success(); |
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233 parser.rollback(); |
654 | 234 StmtString stmt = TemplateStmt(); |
157
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235 if( stmt != null ) { |
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236 stmts.append(stmt.code); |
157
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237 return parser.success(); |
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238 } |
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239 return parser.failure(); |
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240 } |
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241 |
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242 private boolean EndOfLine() { |
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243 return parser.match( "\r\n" ) || parser.match( '\r' ) || parser.match( '\n' ); |
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244 } |
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245 |
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246 private void Stmt(StringBuilder stmts) throws ParseException { |
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247 if( LocalStmt(stmts) ) |
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248 return; |
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249 StmtString stmt; |
658 | 250 if( (stmt=ReturnStmt()) != null |
660 | 251 || (stmt=FunctionStmt()) != null |
661
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252 || (stmt=LocalFunctionStmt()) != null |
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253 || (stmt=BreakStmt()) != null |
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254 || (stmt=ForStmt()) != null |
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255 || (stmt=DoStmt()) != null |
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256 || (stmt=WhileStmt()) != null |
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257 || (stmt=RepeatStmt()) != null |
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258 || (stmt=IfStmt()) != null |
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259 || (stmt=SetStmt()) != null |
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260 || (stmt=ExpressionsStmt()) != null |
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261 ) { |
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262 stmts.append(stmt.code); |
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263 } |
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264 } |
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265 |
654 | 266 private ExpString indexExpStr(ExpString exp1,ExpString exp2) { |
267 String code = "luan.index(" + exp1.expr().code + "," + exp2.expr().code + ")"; | |
268 return new ExpString(code,true,false); | |
269 } | |
270 | |
657 | 271 private ExpString constExpStr(String s) { |
272 s = s | |
273 .replace("\\","\\\\") | |
274 .replace("\"","\\\"") | |
275 .replace("\n","\\n") | |
276 .replace("\r","\\r") | |
277 .replace("\t","\\t") | |
278 .replace("\b","\\b") | |
279 ; | |
280 return new ExpString( "\""+s+"\"", true,false); | |
654 | 281 } |
282 | |
283 private ExpString callExpStr(ExpString fn,ExpString args) { | |
284 String code = "Luan.checkFunction(" + fn.expr().code + ").call(luan,Luan.array(" + args.code + "))"; | |
285 return new ExpString(code,false,true); | |
286 } | |
287 | |
288 private StmtString TemplateStmt() throws ParseException { | |
289 ExpString exprs = TemplateExpressions(In.NOTHING); | |
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290 if( exprs == null ) |
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291 return null; |
657 | 292 String code = "PackageLuan.require(luan,\"luan:Io\")"; |
293 ExpString requireCall = new ExpString(code,true,false); | |
654 | 294 ExpString stdoutExp = indexExpStr( requireCall.expr(), constExpStr("stdout") ); |
295 ExpString writeExp = indexExpStr( stdoutExp, constExpStr("write") ); | |
296 ExpString writeCall = callExpStr( writeExp, exprs ); | |
657 | 297 return new StmtString( writeCall.code + ";\n" ); |
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298 } |
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299 |
654 | 300 private ExpString TemplateExpressions(In in) throws ParseException { |
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301 if( in.template ) |
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302 return null; |
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303 int start = parser.begin(); |
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304 if( !parser.match( "%>" ) ) |
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305 return parser.failure(null); |
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306 EndOfLine(); |
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307 In inTemplate = in.template(); |
654 | 308 List<ExpString> builder = new ArrayList<ExpString>(); |
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309 while(true) { |
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310 if( parser.match( "<%=" ) ) { |
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311 Spaces(inTemplate); |
654 | 312 builder.add( RequiredExpr(inTemplate) ); |
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313 RequiredMatch( "%>" ); |
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314 } else if( parser.match( "<%" ) ) { |
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315 Spaces(inTemplate); |
654 | 316 return parser.success(expString(builder)); |
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317 } else { |
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318 int i = parser.currentIndex(); |
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319 do { |
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320 if( parser.match( "%>" ) ) |
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321 throw parser.exception("'%>' unexpected"); |
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322 if( !parser.anyChar() ) |
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323 throw parser.exception("Unclosed template expression"); |
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324 } while( !parser.test( "<%" ) ); |
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325 String match = parser.textFrom(i); |
654 | 326 builder.add( constExpStr(match) ); |
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327 } |
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328 } |
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329 } |
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330 |
658 | 331 private StmtString ReturnStmt() throws ParseException { |
645 | 332 parser.begin(); |
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333 if( !Keyword("return",In.NOTHING) ) |
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334 return parser.failure(null); |
658 | 335 ExpString exprs = ExpStringList(In.NOTHING); |
336 String code = "luan.returnValues = " + (exprs!=null ? exprs.code : "LuanFunction.NOTHING") + ";\n" | |
337 +"return;\n"; | |
338 return parser.success( new StmtString(code) ); | |
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339 } |
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340 |
660 | 341 private StmtString FunctionStmt() throws ParseException { |
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342 parser.begin(); |
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343 if( !Keyword("function",In.NOTHING) ) |
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344 return parser.failure(null); |
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345 |
645 | 346 parser.currentIndex(); |
347 Var var = nameVar(RequiredName(In.NOTHING)); | |
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348 while( parser.match( '.' ) ) { |
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349 Spaces(In.NOTHING); |
656 | 350 ExpString exp = NameExpr(In.NOTHING); |
636 | 351 if( exp==null ) |
352 return parser.failure(null); | |
656 | 353 var = indexVar( var.exp(), exp ); |
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354 } |
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355 |
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356 FnDef fnDef = RequiredFunction(In.NOTHING); |
660 | 357 return parser.success( var.set(new ExpString(fnDef)) ); |
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358 } |
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359 |
661
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360 private StmtString LocalFunctionStmt() throws ParseException { |
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361 parser.begin(); |
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362 if( !(Keyword("local",In.NOTHING) && Keyword("function",In.NOTHING)) ) |
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363 return parser.failure(null); |
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364 String name = RequiredName(In.NOTHING); |
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365 addSymbol( name ); |
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366 FnDef fnDef = RequiredFunction(In.NOTHING); |
661
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367 Settable s = new SetLocalVar(symbolsSize()-1); |
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368 String code = new SettableString(s).code + ".set(luan," + new ExpString(fnDef).code + ");\n"; |
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369 return parser.success( new StmtString(code) ); |
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370 } |
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371 |
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372 private StmtString BreakStmt() throws ParseException { |
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373 parser.begin(); |
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374 if( !Keyword("break",In.NOTHING) ) |
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375 return parser.failure(null); |
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376 if( frame.loops <= 0 ) |
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377 throw parser.exception("'break' outside of loop"); |
653
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378 return parser.success( new StmtString("break;\n") ); |
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379 } |
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380 |
652
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381 int forCounter = 0; |
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382 |
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383 private StmtString ForStmt() throws ParseException { |
645 | 384 parser.begin(); |
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385 int stackStart = symbolsSize(); |
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386 if( !Keyword("for",In.NOTHING) ) |
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387 return parser.failure(null); |
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388 List<String> names = RequiredNameList(In.NOTHING); |
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389 if( !Keyword("in",In.NOTHING) ) |
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390 return parser.failure(null); |
652
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391 ExpString expr = RequiredExpr(In.NOTHING).expr(); |
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392 RequiredKeyword("do",In.NOTHING); |
652
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393 |
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394 SetLocalVar[] vars = new SetLocalVar[names.size()]; |
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395 for( int i=0; i<vars.length; i++ ) { |
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396 vars[i] = new SetLocalVar(stackStart+i); |
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397 } |
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398 String varsStr = varsToString(vars); |
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399 |
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400 ExpString firstVar = new ExpString(new GetLocalVar(stackStart)); |
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401 addSymbols(names); |
652
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402 StmtString loop = RequiredLoopBlock(); |
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403 RequiredKeyword("end",In.NOTHING); |
654 | 404 String fnVar = "fn"+ ++forCounter; |
652
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405 String code = "" |
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406 +"try {\n" |
654 | 407 +"LuanFunction "+fnVar+" = Luan.checkFunction(" + expr.code + ");\n" |
652
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408 +"while(true) {\n" |
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409 +"for( int i="+stackStart+"; i<"+symbolsSize()+"; i++ ) {\n" |
654 | 410 +"luan.stackSet(i,null);\n" |
652
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411 +"}\n" |
654 | 412 +"LuanImpl.set(luan," + varsStr + ", "+fnVar+".call(luan) );\n" |
652
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413 +"if( " + firstVar.code + "==null ) break;\n" |
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414 + loop.code |
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415 +"}" |
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416 +"} finally {\n" |
654 | 417 +"luan.stackClear("+stackStart+","+symbolsSize()+");\n" |
652
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418 +"}\n" |
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419 ; |
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420 StmtString stmt = new StmtString(code); |
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421 popSymbols( symbolsSize() - stackStart ); |
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422 return parser.success(stmt); |
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423 } |
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424 |
651
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425 private StmtString DoStmt() throws ParseException { |
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426 parser.begin(); |
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427 if( !Keyword("do",In.NOTHING) ) |
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428 return parser.failure(null); |
651
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429 StmtString stmt = RequiredBlock(); |
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430 RequiredKeyword("end",In.NOTHING); |
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431 return parser.success(stmt); |
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432 } |
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433 |
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434 private boolean LocalStmt(StringBuilder stmts) throws ParseException { |
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435 parser.begin(); |
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436 if( !Keyword("local",In.NOTHING) ) |
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437 return parser.failure(); |
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438 List<String> names = NameList(In.NOTHING); |
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439 if( names==null ) { |
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440 if( Keyword("function",In.NOTHING) ) |
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441 return parser.failure(); // handled later |
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442 throw parser.exception("Invalid local statement"); |
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443 } |
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444 if( parser.match( '=' ) ) { |
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445 Spaces(In.NOTHING); |
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446 ExpString values = ExpStringList(In.NOTHING); |
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447 if( values==null ) |
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448 throw parser.exception("Expressions expected"); |
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449 SetLocalVar[] vars = new SetLocalVar[names.size()]; |
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450 int stackStart = symbolsSize(); |
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451 for( int i=0; i<vars.length; i++ ) { |
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452 vars[i] = new SetLocalVar(stackStart+i); |
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453 } |
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454 String varsStr = varsToString(vars); |
654 | 455 String code = "LuanImpl.set(luan," + varsStr + "," + values.code + ");\n"; |
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456 stmts.append(code); |
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457 } |
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458 addSymbols(names); |
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459 return parser.success(); |
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460 } |
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461 |
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462 private List<String> RequiredNameList(In in) throws ParseException { |
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463 parser.begin(); |
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464 List<String> names = NameList(in); |
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465 if( names==null ) |
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466 throw parser.exception("Name expected"); |
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467 return parser.success(names); |
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468 } |
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469 |
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470 private List<String> NameList(In in) throws ParseException { |
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471 String name = Name(in); |
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472 if( name==null ) |
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473 return null; |
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474 List<String> names = new ArrayList<String>(); |
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475 names.add(name); |
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476 while( (name=anotherName(in)) != null ) { |
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477 names.add(name); |
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478 } |
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479 return names; |
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480 } |
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481 |
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482 private String anotherName(In in) throws ParseException { |
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483 parser.begin(); |
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484 if( !parser.match( ',' ) ) |
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485 return parser.failure(null); |
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486 Spaces(in); |
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487 String name = Name(in); |
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488 if( name==null ) |
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489 return parser.failure(null); |
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490 return parser.success(name); |
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491 } |
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492 |
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493 private StmtString WhileStmt() throws ParseException { |
645 | 494 parser.begin(); |
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495 if( !Keyword("while",In.NOTHING) ) |
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496 return parser.failure(null); |
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497 ExpString cnd = RequiredExpr(In.NOTHING).expr(); |
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498 RequiredKeyword("do",In.NOTHING); |
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499 StmtString loop = RequiredLoopBlock(); |
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500 RequiredKeyword("end",In.NOTHING); |
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501 String code = "" |
654 | 502 +"while( Luan.checkBoolean(" + cnd.code + ") ) {\n" |
651
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503 + loop.code |
653
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|
504 +"}\n" |
651
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505 ; |
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506 return parser.success( new StmtString(code) ); |
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507 } |
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508 |
651
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509 private StmtString RepeatStmt() throws ParseException { |
645 | 510 parser.begin(); |
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511 if( !Keyword("repeat",In.NOTHING) ) |
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512 return parser.failure(null); |
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513 StmtString loop =RequiredLoopBlock(); |
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514 RequiredKeyword("until",In.NOTHING); |
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515 ExpString cnd = RequiredExpr(In.NOTHING).expr(); |
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516 String code = "" |
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517 +"do {\n" |
651
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518 + loop.code |
654 | 519 +"} while( !Luan.checkBoolean(" + cnd.code + ") );\n" |
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520 ; |
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521 return parser.success( new StmtString(code) ); |
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522 } |
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523 |
651
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524 private StmtString RequiredLoopBlock() throws ParseException { |
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525 incLoops(); |
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526 StmtString stmt = RequiredBlock(); |
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527 decLoops(); |
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528 return stmt; |
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529 } |
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530 |
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531 private StmtString IfStmt() throws ParseException { |
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532 parser.begin(); |
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533 if( !Keyword("if",In.NOTHING) ) |
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534 return parser.failure(null); |
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535 StringBuilder sb = new StringBuilder(); |
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536 ExpString cnd; |
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537 StmtString block; |
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538 cnd = RequiredExpr(In.NOTHING).expr(); |
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539 RequiredKeyword("then",In.NOTHING); |
653
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540 block = RequiredBlock(); |
654 | 541 sb.append( "if( Luan.checkBoolean(" ).append( cnd.code ).append( ") ) {\n" ).append( block.code ); |
653
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542 while( Keyword("elseif",In.NOTHING) ) { |
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543 cnd = RequiredExpr(In.NOTHING).expr(); |
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544 RequiredKeyword("then",In.NOTHING); |
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545 block = RequiredBlock(); |
654 | 546 sb.append( "} else if( Luan.checkBoolean(" ).append( cnd.code ).append( ") ) {\n" ).append( block.code ); |
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547 } |
653
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548 if( Keyword("else",In.NOTHING) ) { |
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549 block = RequiredBlock(); |
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550 sb.append( "} else {\n" ).append( block.code ); |
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551 } |
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552 RequiredKeyword("end",In.NOTHING); |
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553 sb.append( "}\n" ); |
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554 return parser.success( new StmtString(sb.toString()) ); |
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555 } |
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556 |
652
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557 private StmtString SetStmt() throws ParseException { |
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558 parser.begin(); |
660 | 559 List<Var> vars = new ArrayList<Var>(); |
560 Var v = SettableVar(); | |
561 if( v == null ) | |
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562 return parser.failure(null); |
660 | 563 vars.add(v); |
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564 while( parser.match( ',' ) ) { |
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565 Spaces(In.NOTHING); |
660 | 566 v = SettableVar(); |
567 if( v == null ) | |
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568 return parser.failure(null); |
660 | 569 vars.add(v); |
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570 } |
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571 if( !parser.match( '=' ) ) |
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572 return parser.failure(null); |
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573 Spaces(In.NOTHING); |
652
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574 ExpString values = ExpStringList(In.NOTHING); |
104
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575 if( values==null ) |
274
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576 // throw parser.exception("Expressions expected"); |
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577 return parser.failure(null); |
660 | 578 int n = vars.size(); |
579 if( n == 1 ) | |
580 return parser.success( vars.get(0).set(values) ); | |
581 StringBuilder sb = new StringBuilder(); | |
582 sb.append( "t = " + values.code + ";\n" ); | |
583 ExpString t = new ExpString("t",true,false); | |
584 sb.append( vars.get(0).set(new ExpString("t",true,false)).code ); | |
585 for( int i=1; i<n; i++ ) { | |
662 | 586 sb.append( vars.get(i).set(new ExpString("LuanImpl.pick(t,"+i+")",true,false)).code ); |
660 | 587 } |
588 return parser.success( new StmtString(sb.toString()) ); | |
652
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589 } |
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590 |
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591 private static String varsToString(Settable[] vars) { |
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592 StringBuilder sb = new StringBuilder(); |
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593 sb.append( "new Settable[]{" ); |
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594 for( Settable v : vars ) { |
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595 sb.append( new SettableString(v).code ).append( ',' ); |
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596 } |
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597 sb.append( "}" ); |
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598 return sb.toString(); |
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599 } |
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600 |
651
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601 private StmtString ExpressionsStmt() throws ParseException { |
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602 parser.begin(); |
651
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603 ExpString exp = ExprZ(In.NOTHING); |
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604 if( exp != null && exp.isStmt ) { |
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605 String code = exp.code; |
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606 if( exp.isExpr ) |
654 | 607 code = "LuanImpl.nop(" + code + ")"; |
651
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608 code += ";\n"; |
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609 return parser.success( new StmtString(code) ); |
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610 } |
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611 return parser.failure(null); |
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612 } |
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613 |
660 | 614 private Var SettableVar() throws ParseException { |
104
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615 int start = parser.begin(); |
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616 Var var = VarZ(In.NOTHING); |
660 | 617 if( var==null || !var.isSettable() ) |
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618 return parser.failure(null); |
660 | 619 return parser.success( var ); |
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620 } |
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621 |
650
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622 private ExpString RequiredExpr(In in) throws ParseException { |
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623 parser.begin(); |
211
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624 return parser.success(required(ExprZ(in),"Bad expression")); |
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625 } |
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626 |
650
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627 private ExpString ExprZ(In in) throws ParseException { |
449 | 628 return OrExpr(in); |
19
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629 } |
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630 |
650
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631 private ExpString OrExpr(In in) throws ParseException { |
645 | 632 parser.begin(); |
650
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633 ExpString exp = AndExpr(in); |
104
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634 if( exp==null ) |
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635 return parser.failure(null); |
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636 while( Keyword("or",in) ) { |
650
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637 exp = exp.expr(); |
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638 ExpString exp2 = required(RelExpr(in)).expr(); |
660 | 639 String code = "(LuanImpl.cnd(t = " + exp.code + ") ? t : (" + exp2.code + "))"; |
650
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640 exp = new ExpString(code,true,true); |
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641 } |
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642 return parser.success(exp); |
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643 } |
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644 |
650
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645 private ExpString AndExpr(In in) throws ParseException { |
645 | 646 parser.begin(); |
650
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647 ExpString exp = RelExpr(in); |
104
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648 if( exp==null ) |
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649 return parser.failure(null); |
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650 while( Keyword("and",in) ) { |
650
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651 exp = exp.expr(); |
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652 ExpString exp2 = required(RelExpr(in)).expr(); |
660 | 653 String code = "(LuanImpl.cnd(t = " + exp.code + ") ? (" + exp2.code + ") : t)"; |
650
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654 exp = new ExpString(code,true,true); |
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655 } |
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656 return parser.success(exp); |
18
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657 } |
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658 |
650
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659 private ExpString RelExpr(In in) throws ParseException { |
645 | 660 parser.begin(); |
650
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661 ExpString exp = ConcatExpr(in); |
104
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662 if( exp==null ) |
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663 return parser.failure(null); |
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664 while(true) { |
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665 if( parser.match("==") ) { |
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666 Spaces(in); |
650
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667 exp = exp.expr(); |
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668 ExpString exp2 = required(ConcatExpr(in)).expr(); |
654 | 669 String code = "LuanImpl.eq(luan," + exp.code + "," + exp2.code + ")"; |
650
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670 exp = new ExpString(code,true,false); |
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671 } else if( parser.match("~=") ) { |
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672 Spaces(in); |
650
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673 exp = exp.expr(); |
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674 ExpString exp2 = required(ConcatExpr(in)).expr(); |
654 | 675 String code = "!LuanImpl.eq(luan," + exp.code + "," + exp2.code + ")"; |
650
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676 exp = new ExpString(code,true,false); |
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677 } else if( parser.match("<=") ) { |
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678 Spaces(in); |
650
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679 exp = exp.expr(); |
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680 ExpString exp2 = required(ConcatExpr(in)).expr(); |
654 | 681 String code = "LuanImpl.le(luan," + exp.code + "," + exp2.code + ")"; |
650
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682 exp = new ExpString(code,true,false); |
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683 } else if( parser.match(">=") ) { |
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684 Spaces(in); |
650
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685 exp = exp.expr(); |
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686 ExpString exp2 = required(ConcatExpr(in)).expr(); |
654 | 687 String code = "LuanImpl.le(luan," + exp2.code + "," + exp.code + ")"; |
650
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688 exp = new ExpString(code,true,false); |
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689 } else if( parser.match("<") ) { |
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690 Spaces(in); |
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691 exp = exp.expr(); |
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692 ExpString exp2 = required(ConcatExpr(in)).expr(); |
654 | 693 String code = "LuanImpl.lt(luan," + exp.code + "," + exp2.code + ")"; |
650
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694 exp = new ExpString(code,true,false); |
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695 } else if( parser.match(">") ) { |
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696 Spaces(in); |
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697 exp = exp.expr(); |
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698 ExpString exp2 = required(ConcatExpr(in)).expr(); |
654 | 699 String code = "LuanImpl.lt(luan," + exp2.code + "," + exp.code + ")"; |
650
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700 exp = new ExpString(code,true,false); |
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701 } else |
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702 break; |
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703 } |
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704 return parser.success(exp); |
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705 } |
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706 |
650
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707 private ExpString ConcatExpr(In in) throws ParseException { |
645 | 708 parser.begin(); |
650
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709 ExpString exp = SumExpr(in); |
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710 if( exp==null ) |
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711 return parser.failure(null); |
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712 if( parser.match("..") ) { |
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713 Spaces(in); |
650
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714 exp = exp.expr(); |
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|
715 ExpString exp2 = required(ConcatExpr(in)).expr(); |
654 | 716 String code = "LuanImpl.concat(luan," + exp.code + "," + exp2.code + ")"; |
650
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717 exp = new ExpString(code,true,false); |
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718 } |
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|
719 return parser.success(exp); |
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720 } |
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721 |
650
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722 private ExpString SumExpr(In in) throws ParseException { |
645 | 723 parser.begin(); |
650
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724 ExpString exp = TermExpr(in); |
104
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725 if( exp==null ) |
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726 return parser.failure(null); |
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727 while(true) { |
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728 if( parser.match('+') ) { |
129
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729 Spaces(in); |
650
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|
730 exp = exp.expr(); |
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|
731 ExpString exp2 = required(TermExpr(in)).expr(); |
654 | 732 String code = "LuanImpl.add(luan," + exp.code + "," + exp2.code + ")"; |
650
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733 exp = new ExpString(code,true,false); |
104
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734 } else if( Minus() ) { |
129
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735 Spaces(in); |
650
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|
736 exp = exp.expr(); |
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737 ExpString exp2 = required(TermExpr(in)).expr(); |
654 | 738 String code = "LuanImpl.sub(luan," + exp.code + "," + exp2.code + ")"; |
650
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739 exp = new ExpString(code,true,false); |
104
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740 } else |
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741 break; |
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742 } |
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743 return parser.success(exp); |
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744 } |
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745 |
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746 private boolean Minus() { |
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747 parser.begin(); |
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748 return parser.match('-') && !parser.match('-') ? parser.success() : parser.failure(); |
12
9cea1aea5eef
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749 } |
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750 |
650
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751 private ExpString TermExpr(In in) throws ParseException { |
645 | 752 parser.begin(); |
650
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|
753 ExpString exp = UnaryExpr(in); |
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754 if( exp==null ) |
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755 return parser.failure(null); |
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756 while(true) { |
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757 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(UnaryExpr(in)).expr(); |
654 | 761 String code = "LuanImpl.mul(luan," + exp.code + "," + exp2.code + ")"; |
650
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762 exp = new ExpString(code,true,false); |
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763 } else if( parser.match('/') ) { |
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764 Spaces(in); |
650
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|
765 exp = exp.expr(); |
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|
766 ExpString exp2 = required(UnaryExpr(in)).expr(); |
654 | 767 String code = "LuanImpl.div(luan," + exp.code + "," + exp2.code + ")"; |
650
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768 exp = new ExpString(code,true,false); |
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769 } else if( Mod() ) { |
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770 Spaces(in); |
650
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|
771 exp = exp.expr(); |
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|
772 ExpString exp2 = required(UnaryExpr(in)).expr(); |
654 | 773 String code = "LuanImpl.mod(luan," + exp.code + "," + exp2.code + ")"; |
650
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774 exp = new ExpString(code,true,false); |
104
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775 } else |
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776 break; |
17
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777 } |
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778 return parser.success(exp); |
17
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779 } |
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780 |
107
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781 private boolean Mod() { |
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782 parser.begin(); |
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783 return parser.match('%') && !parser.match('>') ? parser.success() : parser.failure(); |
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784 } |
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785 |
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786 private ExpString UnaryExpr(In in) throws ParseException { |
645 | 787 parser.begin(); |
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788 if( parser.match('#') ) { |
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789 Spaces(in); |
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790 ExpString exp = required(UnaryExpr(in)).expr(); |
654 | 791 String code = "LuanImpl.len(luan," + exp.code + ")"; |
649
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792 exp = new ExpString(code,true,false); |
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793 return parser.success(exp); |
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794 } |
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795 if( Minus() ) { |
129
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796 Spaces(in); |
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797 ExpString exp = required(UnaryExpr(in)).expr(); |
654 | 798 String code = "LuanImpl.unm(luan," + exp.code + ")"; |
649
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799 exp = new ExpString(code,true,false); |
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800 return parser.success(exp); |
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801 } |
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802 if( Keyword("not",in) ) { |
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803 Spaces(in); |
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804 ExpString exp = required(UnaryExpr(in)).expr(); |
654 | 805 String code = "!Luan.checkBoolean(" + exp.code + ")"; |
649
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806 exp = new ExpString(code,true,false); |
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807 return parser.success(exp); |
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808 } |
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809 ExpString exp = PowExpr(in); |
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810 if( exp==null ) |
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811 return parser.failure(null); |
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812 return parser.success(exp); |
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813 } |
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814 |
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815 private ExpString PowExpr(In in) throws ParseException { |
645 | 816 parser.begin(); |
657 | 817 ExpString exp1 = SingleExpr(in); |
818 if( exp1==null ) | |
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819 return parser.failure(null); |
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820 if( parser.match('^') ) { |
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821 Spaces(in); |
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822 ExpString exp2 = required(PowExpr(in)); |
654 | 823 String code = "LuanImpl.pow(luan," + exp1.code + "," + exp2.code + ")"; |
650
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824 exp1 = new ExpString(code,true,false); |
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825 } |
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826 return parser.success(exp1); |
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827 } |
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828 |
657 | 829 private ExpString SingleExpr(In in) throws ParseException { |
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830 parser.begin(); |
657 | 831 Expressions exp = FunctionExpr(in); |
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832 if( exp != null ) |
657 | 833 return parser.success(new ExpString(exp)); |
834 ExpString es = VarExp(in); | |
835 if( es != null ) | |
836 return parser.success(es); | |
449 | 837 exp = VarArgs(in); |
104
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838 if( exp != null ) |
657 | 839 return parser.success(new ExpString(exp)); |
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840 return parser.failure(null); |
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841 } |
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842 |
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843 private Expr FunctionExpr(In in) throws ParseException { |
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844 if( !Keyword("function",in) ) |
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845 return null; |
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846 return RequiredFunction(in); |
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847 } |
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848 |
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849 private FnDef RequiredFunction(In in) throws ParseException { |
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850 int start = parser.begin(); |
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851 RequiredMatch('('); |
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852 In inParens = in.parens(); |
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853 Spaces(inParens); |
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854 frame = new Frame(frame); |
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855 List<String> names = NameList(in); |
104
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856 if( names != null ) { |
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857 addSymbols(names); |
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858 if( parser.match(',') ) { |
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859 Spaces(inParens); |
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860 if( !parser.match("...") ) |
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861 throw parser.exception(); |
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862 Spaces(inParens); |
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863 frame.isVarArg = true; |
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864 } |
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865 } else if( parser.match("...") ) { |
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866 Spaces(inParens); |
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867 frame.isVarArg = true; |
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868 } |
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869 RequiredMatch(')'); |
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870 Spaces(in); |
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871 Stmt block = stmt(RequiredBlock()); |
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872 RequiredKeyword("end",in); |
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873 FnDef fnDef = newFnDef(start,block); |
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874 frame = frame.parent; |
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875 return parser.success(fnDef); |
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876 } |
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877 |
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878 private VarArgs VarArgs(In in) throws ParseException { |
645 | 879 parser.begin(); |
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880 if( !frame.isVarArg || !parser.match("...") ) |
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881 return parser.failure(null); |
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882 Spaces(in); |
645 | 883 return parser.success( new VarArgs() ); |
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884 } |
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885 |
655 | 886 private ExpString TableExpr(In in) throws ParseException { |
645 | 887 parser.begin(); |
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888 if( !parser.match('{') ) |
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889 return parser.failure(null); |
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890 Spaces(In.NOTHING); |
655 | 891 List<ExpString> builder = new ArrayList<ExpString>(); |
892 Field(builder); | |
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893 while( FieldSep() ) { |
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894 Spaces(In.NOTHING); |
655 | 895 Field(builder); |
604
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896 } |
655 | 897 ExpString exp = TemplateExpressions(In.NOTHING); |
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898 if( exp != null ) |
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899 builder.add(exp); |
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900 if( !parser.match('}') ) |
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901 throw parser.exception("Expected table element or '}'"); |
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902 Spaces(in); |
655 | 903 String code = "LuanImpl.table(" + expString(builder).code + ")"; |
904 return parser.success( new ExpString(code,true,false) ); | |
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905 } |
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906 |
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907 private boolean FieldSep() throws ParseException { |
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908 return parser.anyOf(",;") || EndOfLine(); |
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909 } |
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910 |
655 | 911 private boolean Field(List<ExpString> builder) throws ParseException { |
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912 parser.begin(); |
656 | 913 ExpString exp = SubExpr(In.NOTHING); |
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914 if( exp==null ) |
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915 exp = NameExpr(In.NOTHING); |
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916 if( exp!=null && parser.match('=') ) { |
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917 Spaces(In.NOTHING); |
655 | 918 ExpString val = RequiredExpr(In.NOTHING).expr(); |
656 | 919 String code = "new TableField(" + exp.code + "," + val.code + ")"; |
655 | 920 builder.add( new ExpString(code,true,false) ); |
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921 return parser.success(); |
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922 } |
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923 parser.rollback(); |
655 | 924 ExpString exprs = ExprZ(In.NOTHING); |
154
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925 if( exprs != null ) { |
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926 builder.add(exprs); |
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927 return parser.success(); |
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928 } |
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929 return parser.failure(); |
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930 } |
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931 |
656 | 932 private ExpString VarExp(In in) throws ParseException { |
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933 Var var = VarZ(in); |
656 | 934 return var==null ? null : var.exp(); |
8
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935 } |
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936 |
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937 private Var VarZ(In in) throws ParseException { |
645 | 938 parser.begin(); |
939 Var var = VarStart(in); | |
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940 if( var==null ) |
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941 return parser.failure(null); |
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942 Var var2; |
656 | 943 while( (var2=Var2(in,var.exp())) != null ) { |
104
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944 var = var2; |
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945 } |
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946 return parser.success(var); |
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947 } |
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948 |
645 | 949 private Var VarStart(In in) throws ParseException { |
206
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950 if( parser.match('(') ) { |
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951 In inParens = in.parens(); |
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952 Spaces(inParens); |
656 | 953 ExpString exp = RequiredExpr(inParens).expr(); |
206
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954 RequiredMatch(')'); |
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955 Spaces(in); |
206
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956 return exprVar(exp); |
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957 } |
206
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958 String name = Name(in); |
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959 if( name != null ) |
645 | 960 return nameVar(name); |
656 | 961 ExpString exp; |
962 exp = TableExpr(in); | |
206
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963 if( exp != null ) |
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964 return exprVar(exp); |
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965 exp = Literal(in); |
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966 if( exp != null ) |
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967 return exprVar(exp); |
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968 return null; |
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969 } |
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970 |
656 | 971 private Var Var2(In in,ExpString exp1) throws ParseException { |
104
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972 parser.begin(); |
656 | 973 ExpString exp2 = SubExpr(in); |
104
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974 if( exp2 != null ) |
656 | 975 return parser.success(indexVar(exp1,exp2)); |
104
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976 if( parser.match('.') ) { |
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977 Spaces(in); |
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978 exp2 = NameExpr(in); |
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979 if( exp2!=null ) |
656 | 980 return parser.success(indexVar(exp1,exp2)); |
636 | 981 return parser.failure(null); |
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982 } |
656 | 983 ExpString fnCall = Args( in, exp1, new ArrayList<ExpString>() ); |
206
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984 if( fnCall != null ) |
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985 return parser.success(exprVar(fnCall)); |
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986 return parser.failure(null); |
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987 } |
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988 |
503 | 989 private interface Var { |
656 | 990 public ExpString exp() throws ParseException; |
660 | 991 // public Settable settable() throws ParseException; |
992 public boolean isSettable(); | |
993 public StmtString set(ExpString val) throws ParseException; | |
503 | 994 } |
995 | |
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996 private Expr env() { |
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997 int index = stackIndex(_ENV); |
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998 if( index != -1 ) |
645 | 999 return new GetLocalVar(index); |
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1000 index = upValueIndex(_ENV); |
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1001 if( index != -1 ) |
645 | 1002 return new GetUpVar(index); |
503 | 1003 return null; |
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1004 } |
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1005 |
645 | 1006 private Var nameVar(final String name) { |
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1007 return new Var() { |
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1008 |
656 | 1009 public ExpString exp() throws ParseException { |
104
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1010 int index = stackIndex(name); |
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1011 if( index != -1 ) |
656 | 1012 return new ExpString(new GetLocalVar(index)); |
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1013 index = upValueIndex(name); |
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1014 if( index != -1 ) |
656 | 1015 return new ExpString(new GetUpVar(index)); |
503 | 1016 Expr envExpr = env(); |
1017 if( envExpr != null ) | |
656 | 1018 return indexExpStr( new ExpString(envExpr), constExpStr(name) ); |
503 | 1019 parser.failure(null); |
1020 throw parser.exception("name '"+name+"' not defined"); | |
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1021 } |
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1022 |
660 | 1023 public boolean isSettable() { |
1024 return true; | |
1025 } | |
1026 | |
1027 private Settable settable() throws ParseException { | |
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1028 int index = stackIndex(name); |
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1029 if( index != -1 ) |
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1030 return new SetLocalVar(index); |
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1031 index = upValueIndex(name); |
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1032 if( index != -1 ) |
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1033 return new SetUpVar(index); |
503 | 1034 Expr envExpr = env(); |
1035 if( envExpr != null ) | |
645 | 1036 return new SetTableEntry( envExpr, new ConstExpr(name) ); |
503 | 1037 parser.failure(null); |
1038 throw parser.exception("name '"+name+"' not defined"); | |
104
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1039 } |
660 | 1040 |
1041 public StmtString set(ExpString val) throws ParseException { | |
1042 String code = new SettableString(settable()).code + ".set(luan," + val.expr().code + ");\n"; | |
1043 return new StmtString(code); | |
1044 } | |
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1045 }; |
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1046 } |
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1047 |
656 | 1048 private Var exprVar(final ExpString expr) { |
104
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1049 return new Var() { |
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1050 |
656 | 1051 public ExpString exp() { |
104
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1052 return expr; |
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1053 } |
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1054 |
660 | 1055 public boolean isSettable() { |
1056 return false; | |
1057 } | |
1058 | |
1059 public StmtString set(ExpString val) { | |
1060 throw new RuntimeException(); | |
104
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1061 } |
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1062 }; |
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1063 } |
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1064 |
656 | 1065 private Var indexVar(final ExpString table,final ExpString key) { |
104
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1066 return new Var() { |
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1067 |
656 | 1068 public ExpString exp() { |
1069 return indexExpStr( table, key ); | |
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1070 } |
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1071 |
660 | 1072 public boolean isSettable() { |
1073 return true; | |
1074 } | |
1075 /* | |
104
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1076 public Settable settable() { |
656 | 1077 return new SetTableEntry(expr(LuanParser.exp(table)),expr(LuanParser.exp(key))); |
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1078 } |
660 | 1079 */ |
1080 public StmtString set(ExpString val) { | |
1081 String code = "LuanImpl.put(luan," + table.expr().code + "," + key.expr().code + "," + val.expr().code + ");\n"; | |
1082 return new StmtString(code); | |
1083 } | |
104
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1084 }; |
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1085 } |
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1086 |
656 | 1087 private ExpString Args(In in,ExpString fn,List<ExpString> builder) throws ParseException { |
104
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1088 parser.begin(); |
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1089 return args(in,builder) |
656 | 1090 ? parser.success( callExpStr( fn, expString(builder) ) ) |
1091 : parser.failure((ExpString)null); | |
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1092 } |
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1093 |
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1094 private boolean args(In in,List<ExpString> builder) throws ParseException { |
645 | 1095 parser.begin(); |
104
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1096 if( parser.match('(') ) { |
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1097 In inParens = in.parens(); |
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1098 Spaces(inParens); |
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1099 ExpList(inParens,builder); // optional |
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1100 if( !parser.match(')') ) |
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1101 throw parser.exception("Expression or ')' expected"); |
129
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1102 Spaces(in); |
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1103 return parser.success(); |
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1104 } |
655 | 1105 ExpString exp = TableExpr(in); |
107
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1106 if( exp != null ) { |
655 | 1107 builder.add(exp); |
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1108 return parser.success(); |
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1109 } |
129
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1110 String s = StringLiteral(in); |
107
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1111 if( s != null ) { |
657 | 1112 builder.add( constExpStr(s) ); |
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1113 return parser.success(); |
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1114 } |
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1115 /* |
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1116 Expressions exps = TemplateExpressions(in); |
107
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1117 if( exps != null ) { |
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1118 builder.add(exps); |
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1119 return parser.success(); |
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1120 } |
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1121 */ |
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1122 return parser.failure(); |
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1123 } |
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1124 |
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1125 private ExpString ExpStringList(In in) throws ParseException { |
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1126 List<ExpString> builder = new ArrayList<ExpString>(); |
654 | 1127 return ExpList(in,builder) ? expString(builder) : null; |
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1128 } |
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1129 |
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1130 private boolean ExpList(In in,List<ExpString> builder) throws ParseException { |
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1131 parser.begin(); |
654 | 1132 ExpString exp = TemplateExpressions(in); |
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1133 if( exp != null ) { |
654 | 1134 builder.add(exp); |
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1135 return parser.success(); |
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1136 } |
654 | 1137 exp = ExprZ(in); |
1138 if( exp==null ) | |
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1139 return parser.failure(); |
654 | 1140 builder.add(exp); |
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1141 while( parser.match(',') ) { |
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1142 Spaces(in); |
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1143 exp = TemplateExpressions(in); |
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1144 if( exp != null ) { |
654 | 1145 builder.add(exp); |
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1146 return parser.success(); |
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1147 } |
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1148 builder.add( RequiredExpr(in) ); |
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1149 } |
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1150 return parser.success(); |
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1151 } |
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1152 |
656 | 1153 private ExpString SubExpr(In in) throws ParseException { |
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1154 parser.begin(); |
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1155 if( !parser.match('[') || parser.test("[") || parser.test("=") ) |
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1156 return parser.failure(null); |
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1157 Spaces(In.NOTHING); |
656 | 1158 ExpString exp = RequiredExpr(In.NOTHING).expr(); |
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1159 RequiredMatch(']'); |
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1160 Spaces(in); |
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1161 return parser.success(exp); |
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1162 } |
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1163 |
656 | 1164 private ExpString NameExpr(In in) throws ParseException { |
645 | 1165 parser.begin(); |
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1166 String name = Name(in); |
195
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1167 if( name==null ) |
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1168 return parser.failure(null); |
656 | 1169 return parser.success(constExpStr(name)); |
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1170 } |
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1171 |
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1172 private String RequiredName(In in) throws ParseException { |
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1173 parser.begin(); |
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1174 String name = Name(in); |
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1175 if( name==null ) |
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1176 throw parser.exception("Name expected"); |
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1177 return parser.success(name); |
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1178 } |
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1179 |
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1180 private String Name(In in) throws ParseException { |
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1181 int start = parser.begin(); |
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1182 if( !NameFirstChar() ) |
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1183 return parser.failure(null); |
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1184 while( NameChar() ); |
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1185 String match = parser.textFrom(start); |
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1186 if( keywords.contains(match) ) |
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1187 return parser.failure(null); |
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1188 Spaces(in); |
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1189 return parser.success(match); |
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1190 } |
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1191 |
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1192 private boolean NameChar() { |
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1193 return NameFirstChar() || Digit(); |
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1194 } |
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1195 |
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1196 private boolean NameFirstChar() { |
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1197 return parser.inCharRange('a', 'z') || parser.inCharRange('A', 'Z') || parser.match('_'); |
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1198 } |
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1199 |
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1200 private void RequiredMatch(char c) throws ParseException { |
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1201 if( !parser.match(c) ) |
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1202 throw parser.exception("'"+c+"' expected"); |
9
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1203 } |
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1204 |
104
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1205 private void RequiredMatch(String s) throws ParseException { |
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1206 if( !parser.match(s) ) |
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1207 throw parser.exception("'"+s+"' expected"); |
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1208 } |
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1209 |
129
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1210 private void RequiredKeyword(String keyword,In in) throws ParseException { |
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1211 if( !Keyword(keyword,in) ) |
104
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1212 throw parser.exception("'"+keyword+"' expected"); |
9
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1213 } |
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1214 |
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1215 private boolean Keyword(String keyword,In in) throws ParseException { |
104
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1216 parser.begin(); |
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1217 if( !parser.match(keyword) || NameChar() ) |
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1218 return parser.failure(); |
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1219 Spaces(in); |
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1220 return parser.success(); |
12
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1221 } |
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1222 |
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1223 private static final Set<String> keywords = new HashSet<String>(Arrays.asList( |
12
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1224 "and", |
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1225 "break", |
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1226 "do", |
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1227 "else", |
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1228 "elseif", |
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1229 "end", |
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1230 "false", |
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1231 "for", |
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1232 "function", |
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1233 "goto", |
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1234 "if", |
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1235 "in", |
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1236 "local", |
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1237 "nil", |
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1238 "not", |
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1239 "or", |
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1240 "repeat", |
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1241 "return", |
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1242 "then", |
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1243 "true", |
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1244 "until", |
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1245 "while" |
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1246 )); |
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1247 |
656 | 1248 private ExpString Literal(In in) throws ParseException { |
645 | 1249 parser.begin(); |
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1250 if( NilLiteral(in) ) |
657 | 1251 return parser.success(new ExpString("null",true,false)); |
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1252 Boolean b = BooleanLiteral(in); |
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1253 if( b != null ) |
657 | 1254 return parser.success(new ExpString(b.toString(),true,false)); |
129
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1255 Number n = NumberLiteral(in); |
657 | 1256 if( n != null ) { |
1257 String s = n.toString(); | |
1258 if( n instanceof Long ) | |
1259 s += "L"; | |
1260 return parser.success(new ExpString(s,true,false)); | |
1261 } | |
129
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1262 String s = StringLiteral(in); |
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1263 if( s != null ) |
656 | 1264 return parser.success(constExpStr(s)); |
195
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1265 return parser.failure(null); |
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|
1266 } |
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1267 |
129
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1268 private boolean NilLiteral(In in) throws ParseException { |
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1269 return Keyword("nil",in); |
65
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1270 } |
1ff53a88579a
multi-line statements
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1271 |
129
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1272 private Boolean BooleanLiteral(In in) throws ParseException { |
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1273 if( Keyword("true",in) ) |
104
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1274 return true; |
129
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1275 if( Keyword("false",in) ) |
104
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1276 return false; |
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1277 return null; |
5
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|
1278 } |
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1279 |
129
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1280 private Number NumberLiteral(In in) throws ParseException { |
104
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1281 parser.begin(); |
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1282 Number n; |
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1283 if( parser.matchIgnoreCase("0x") ) { |
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1284 n = HexNumber(); |
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1285 } else { |
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1286 n = DecNumber(); |
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1287 } |
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1288 if( n==null || NameChar() ) |
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1289 return parser.failure(null); |
129
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1290 Spaces(in); |
104
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1291 return parser.success(n); |
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1292 } |
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1293 |
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1294 private Number DecNumber() { |
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1295 int start = parser.begin(); |
535
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1296 boolean isInt = true; |
104
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1297 if( Int() ) { |
535
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1298 if( parser.match('.') ) { |
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1299 isInt = false; |
104
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1300 Int(); // optional |
535
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1301 } |
104
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1302 } else if( parser.match('.') && Int() ) { |
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1303 // ok |
535
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1304 isInt = false; |
104
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1305 } else |
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1306 return parser.failure(null); |
535
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1307 if( Exponent() ) // optional |
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1308 isInt = false; |
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1309 String s = parser.textFrom(start); |
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1310 if( isInt ) { |
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1311 try { |
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1312 return parser.success(Integer.valueOf(s)); |
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1313 } catch(NumberFormatException e) {} |
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1314 try { |
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1315 return parser.success(Long.valueOf(s)); |
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1316 } catch(NumberFormatException e) {} |
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1317 } |
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1318 return parser.success(Double.valueOf(s)); |
5
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1319 } |
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1320 |
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1321 private boolean Exponent() { |
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1322 parser.begin(); |
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1323 if( !parser.matchIgnoreCase("e") ) |
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1324 return parser.failure(); |
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1325 parser.anyOf("+-"); // optional |
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1326 if( !Int() ) |
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1327 return parser.failure(); |
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1328 return parser.success(); |
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1329 } |
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1330 |
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1331 private boolean Int() { |
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1332 if( !Digit() ) |
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1333 return false; |
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1334 while( Digit() ); |
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1335 return true; |
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1336 } |
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1337 |
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1338 private boolean Digit() { |
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1339 return parser.inCharRange('0', '9'); |
16
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1340 } |
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1341 |
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1342 private Number HexNumber() { |
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1343 int start = parser.begin(); |
535
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1344 long nLong = 0; |
104
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1345 double n; |
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1346 if( HexInt() ) { |
535
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1347 nLong = Long.parseLong(parser.textFrom(start),16); |
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1348 n = (double)nLong; |
104
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1349 if( parser.match('.') ) { |
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1350 start = parser.currentIndex(); |
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1351 if( HexInt() ) { |
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1352 String dec = parser.textFrom(start); |
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1353 n += (double)Long.parseLong(dec,16) / Math.pow(16,dec.length()); |
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1354 } |
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1355 } |
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1356 } else if( parser.match('.') && HexInt() ) { |
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1357 String dec = parser.textFrom(start+1); |
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1358 n = (double)Long.parseLong(dec,16) / Math.pow(16,dec.length()); |
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1359 } else { |
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1360 return parser.failure(null); |
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1361 } |
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1362 if( parser.matchIgnoreCase("p") ) { |
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1363 parser.anyOf("+-"); // optional |
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1364 start = parser.currentIndex(); |
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1365 if( !HexInt() ) |
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1366 return parser.failure(null); |
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1367 n *= Math.pow(2,(double)Long.parseLong(parser.textFrom(start))); |
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1368 } |
535
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1369 if( nLong == n ) { |
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1370 int nInt = (int)nLong; |
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1371 if( nInt == nLong ) |
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1372 return parser.success(Integer.valueOf(nInt)); |
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1373 return parser.success(Long.valueOf(nLong)); |
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1374 } |
104
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1375 return parser.success(Double.valueOf(n)); |
16
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1376 } |
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1377 |
104
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1378 private boolean HexInt() { |
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1379 if( !HexDigit() ) |
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1380 return false; |
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1381 while( HexDigit() ); |
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1382 return true; |
16
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1383 } |
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1384 |
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1385 |
104
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1386 private boolean HexDigit() { |
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1387 return Digit() || parser.anyOf("abcdefABCDEF"); |
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1388 } |
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1389 |
129
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1390 private String StringLiteral(In in) throws ParseException { |
104
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1391 String s; |
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1392 if( (s=QuotedString('"'))==null |
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1393 && (s=QuotedString('\''))==null |
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1394 && (s=LongString())==null |
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1395 ) |
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1396 return null; |
129
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1397 Spaces(in); |
104
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1398 return s; |
16
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1399 } |
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1400 |
104
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1401 private String LongString() throws ParseException { |
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1402 parser.begin(); |
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1403 if( !parser.match('[') ) |
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1404 return parser.failure(null); |
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1405 int start = parser.currentIndex(); |
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1406 while( parser.match('=') ); |
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1407 int nEquals = parser.currentIndex() - start; |
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1408 if( !parser.match('[') ) |
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1409 return parser.failure(null); |
120
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1410 EndOfLine(); |
104
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1411 start = parser.currentIndex(); |
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1412 while( !LongBracketsEnd(nEquals) ) { |
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1413 if( !parser.anyChar() ) |
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1414 throw parser.exception("Unclosed long string"); |
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1415 } |
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1416 String s = parser.text.substring( start, parser.currentIndex() - nEquals - 2 ); |
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1417 return parser.success(s); |
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1418 } |
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1419 |
104
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1420 private String QuotedString(char quote) throws ParseException { |
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1421 parser.begin(); |
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1422 if( !parser.match(quote) ) |
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1423 return parser.failure(null); |
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1424 StringBuilder buf = new StringBuilder(); |
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1425 while( !parser.match(quote) ) { |
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1426 Character c = EscSeq(); |
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1427 if( c != null ) { |
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1428 buf.append(c); |
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1429 } else { |
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1430 if( parser.test('\r') || parser.test('\n') || !parser.anyChar() ) |
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1431 throw parser.exception("Unclosed string"); |
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1432 buf.append(parser.lastChar()); |
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1433 } |
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1434 } |
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1435 return parser.success(buf.toString()); |
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1436 } |
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1437 |
104
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1438 private Character EscSeq() { |
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1439 parser.begin(); |
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1440 if( !parser.match('\\') ) |
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1441 return parser.failure(null); |
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1442 if( parser.match('a') ) return parser.success('\u0007'); |
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1443 if( parser.match('b') ) return parser.success('\b'); |
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1444 if( parser.match('f') ) return parser.success('\f'); |
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1445 if( parser.match('n') ) return parser.success('\n'); |
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1446 if( parser.match('r') ) return parser.success('\r'); |
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1447 if( parser.match('t') ) return parser.success('\t'); |
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fix parsing problems
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parents:
154
diff
changeset
|
1448 if( parser.match('v') ) return parser.success('\u000b'); |
db7b3902e01c
fix parsing problems
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
154
diff
changeset
|
1449 if( parser.match('\\') ) return parser.success('\\'); |
db7b3902e01c
fix parsing problems
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parents:
154
diff
changeset
|
1450 if( parser.match('"') ) return parser.success('"'); |
db7b3902e01c
fix parsing problems
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
154
diff
changeset
|
1451 if( parser.match('\'') ) return parser.success('\''); |
104
754e6030c029
remove parboiled and rewrite parser;
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parents:
99
diff
changeset
|
1452 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
|
1453 if( parser.match('x') && HexDigit() && HexDigit() ) |
155
db7b3902e01c
fix parsing problems
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
154
diff
changeset
|
1454 return parser.success((char)Integer.parseInt(parser.textFrom(start+1),16)); |
104
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1455 if( Digit() ) { |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1456 if( Digit() ) Digit(); // optional |
155
db7b3902e01c
fix parsing problems
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
154
diff
changeset
|
1457 return parser.success((char)Integer.parseInt(parser.textFrom(start))); |
104
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1458 } |
271
82a3ebcfbafa
add internal tests
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
260
diff
changeset
|
1459 if( EndOfLine() ) |
82a3ebcfbafa
add internal tests
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
260
diff
changeset
|
1460 return parser.success('\n'); |
104
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1461 return parser.failure(null); |
14
2ddf85634d20
whitespace handling;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
12
diff
changeset
|
1462 } |
2ddf85634d20
whitespace handling;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
12
diff
changeset
|
1463 |
129
486a0641bca4
add pickle client/server;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
128
diff
changeset
|
1464 private void Spaces(In in) throws ParseException { |
247
b5995d77878a
fix parsing of comments
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parents:
245
diff
changeset
|
1465 while( parser.anyOf(" \t") || Comment() || ContinueOnNextLine() || in.parens && EndOfLine() ); |
14
2ddf85634d20
whitespace handling;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
12
diff
changeset
|
1466 } |
2ddf85634d20
whitespace handling;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
12
diff
changeset
|
1467 |
104
754e6030c029
remove parboiled and rewrite parser;
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parents:
99
diff
changeset
|
1468 private boolean ContinueOnNextLine() { |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1469 parser.begin(); |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1470 return parser.match('\\') && EndOfLine() ? parser.success() : parser.failure(); |
7
bca8fc5d928b
work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
6
diff
changeset
|
1471 } |
bca8fc5d928b
work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
6
diff
changeset
|
1472 |
247
b5995d77878a
fix parsing of comments
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parents:
245
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|
1473 private boolean Comment() throws ParseException { |
b5995d77878a
fix parsing of comments
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
245
diff
changeset
|
1474 if( LongComment() ) |
b5995d77878a
fix parsing of comments
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parents:
245
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|
1475 return true; |
104
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1476 if( parser.match("--") ) { |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1477 while( parser.noneOf("\r\n") ); |
247
b5995d77878a
fix parsing of comments
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parents:
245
diff
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|
1478 return true; |
104
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1479 } |
247
b5995d77878a
fix parsing of comments
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
245
diff
changeset
|
1480 return false; |
18
3971113699b8
add NumericForStmt
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
17
diff
changeset
|
1481 } |
3971113699b8
add NumericForStmt
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
17
diff
changeset
|
1482 |
247
b5995d77878a
fix parsing of comments
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parents:
245
diff
changeset
|
1483 private boolean LongComment() throws ParseException { |
104
754e6030c029
remove parboiled and rewrite parser;
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parents:
99
diff
changeset
|
1484 parser.begin(); |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1485 if( !parser.match("--[") ) |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1486 return parser.failure(); |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1487 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
|
1488 while( parser.match('=') ); |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1489 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
|
1490 if( !parser.match('[') ) |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1491 return parser.failure(); |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1492 while( !LongBracketsEnd(nEquals) ) { |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1493 if( !parser.anyChar() ) |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1494 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
changeset
|
1495 } |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1496 return parser.success(); |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1497 } |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1498 |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1499 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
|
1500 parser.begin(); |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1501 if( !parser.match(']') ) |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1502 return parser.failure(); |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1503 while( nEquals-- > 0 ) { |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1504 if( !parser.match('=') ) |
754e6030c029
remove parboiled and rewrite parser;
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parents:
99
diff
changeset
|
1505 return parser.failure(); |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1506 } |
754e6030c029
remove parboiled and rewrite parser;
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parents:
99
diff
changeset
|
1507 if( !parser.match(']') ) |
754e6030c029
remove parboiled and rewrite parser;
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parents:
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diff
changeset
|
1508 return parser.failure(); |
754e6030c029
remove parboiled and rewrite parser;
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parents:
99
diff
changeset
|
1509 return parser.success(); |
12
9cea1aea5eef
CmdLine can run files
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
11
diff
changeset
|
1510 } |
9cea1aea5eef
CmdLine can run files
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
11
diff
changeset
|
1511 |
648
e387e4021afe
start compiler with len operator
Franklin Schmidt <fschmidt@gmail.com>
parents:
645
diff
changeset
|
1512 |
e387e4021afe
start compiler with len operator
Franklin Schmidt <fschmidt@gmail.com>
parents:
645
diff
changeset
|
1513 |
e387e4021afe
start compiler with len operator
Franklin Schmidt <fschmidt@gmail.com>
parents:
645
diff
changeset
|
1514 |
e387e4021afe
start compiler with len operator
Franklin Schmidt <fschmidt@gmail.com>
parents:
645
diff
changeset
|
1515 private static int classCounter = 0; |
e387e4021afe
start compiler with len operator
Franklin Schmidt <fschmidt@gmail.com>
parents:
645
diff
changeset
|
1516 |
649
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1517 private class ExpString { |
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1518 final String code; |
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1519 final boolean isExpr; |
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1520 final boolean isStmt; |
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1521 |
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1522 ExpString(Expressions exp) { |
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1523 if( exp==null ) throw new NullPointerException(); |
654 | 1524 int i = LuanImpl.addExpressions(exp); |
1525 code = "LuanImpl.getExpressions(" + i + ").eval(luan)"; | |
649
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1526 isExpr = exp instanceof Expr; |
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1527 isStmt = exp instanceof StmtExp; |
37f0cf43f191
UnaryExpr now compiled
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parents:
648
diff
changeset
|
1528 } |
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1529 |
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1530 ExpString(String code,boolean isExpr,boolean isStmt) { |
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1531 this.code = code; |
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1532 this.isExpr = isExpr; |
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1533 this.isStmt = isStmt; |
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1534 } |
37f0cf43f191
UnaryExpr now compiled
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parents:
648
diff
changeset
|
1535 |
37f0cf43f191
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Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1536 ExpString expr() { |
654 | 1537 return isExpr ? this : new ExpString( "Luan.first(" + code + ")", true, isStmt ); |
649
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1538 } |
650
d658eab7bf4c
finish compiling operators
Franklin Schmidt <fschmidt@gmail.com>
parents:
649
diff
changeset
|
1539 } |
d658eab7bf4c
finish compiling operators
Franklin Schmidt <fschmidt@gmail.com>
parents:
649
diff
changeset
|
1540 |
654 | 1541 private ExpString expString(List<ExpString> list) { |
652
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1542 switch(list.size()) { |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1543 case 0: |
653
538b0ae08faa
compile IfStmt and BreakStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
652
diff
changeset
|
1544 return new ExpString("LuanFunction.NOTHING",false,false); |
652
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1545 case 1: |
653
538b0ae08faa
compile IfStmt and BreakStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
652
diff
changeset
|
1546 return list.get(0); |
652
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1547 default: |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1548 int lastI = list.size() - 1; |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1549 StringBuilder sb = new StringBuilder(); |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1550 sb.append( "new Object[]{" ); |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1551 for( int i=0; i<lastI; i++ ) { |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1552 sb.append( list.get(i).expr().code ).append( ',' ); |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1553 } |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1554 ExpString last = list.get(lastI); |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1555 if( last.isExpr ) { |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1556 sb.append( last.code ).append( '}' ); |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1557 return new ExpString(sb.toString(),false,false); |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1558 } else { |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1559 sb.append( '}' ); |
654 | 1560 String s = "LuanImpl.concatArgs(" + sb + "," + last.code + ")"; |
652
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1561 return new ExpString(s,false,false); |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1562 } |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1563 } |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1564 } |
657 | 1565 |
651
140cc5191b7a
start compiling statements
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parents:
650
diff
changeset
|
1566 private static class StmtString { |
140cc5191b7a
start compiling statements
Franklin Schmidt <fschmidt@gmail.com>
parents:
650
diff
changeset
|
1567 final String code; |
661
1bbb08c0d8f1
compile LocalFunctionStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
660
diff
changeset
|
1568 /* |
651
140cc5191b7a
start compiling statements
Franklin Schmidt <fschmidt@gmail.com>
parents:
650
diff
changeset
|
1569 StmtString(Stmt stmt) { |
140cc5191b7a
start compiling statements
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parents:
650
diff
changeset
|
1570 if( stmt==null ) throw new NullPointerException(); |
654 | 1571 int i = LuanImpl.addStmt(stmt); |
1572 code = "LuanImpl.getStmt(" + i + ").eval(luan);\n"; | |
651
140cc5191b7a
start compiling statements
Franklin Schmidt <fschmidt@gmail.com>
parents:
650
diff
changeset
|
1573 } |
661
1bbb08c0d8f1
compile LocalFunctionStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
660
diff
changeset
|
1574 */ |
651
140cc5191b7a
start compiling statements
Franklin Schmidt <fschmidt@gmail.com>
parents:
650
diff
changeset
|
1575 StmtString(String code) { |
140cc5191b7a
start compiling statements
Franklin Schmidt <fschmidt@gmail.com>
parents:
650
diff
changeset
|
1576 this.code = code; |
652
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1577 if( code.contains("LuanParser") ) throw new RuntimeException("\n"+code); |
651
140cc5191b7a
start compiling statements
Franklin Schmidt <fschmidt@gmail.com>
parents:
650
diff
changeset
|
1578 } |
140cc5191b7a
start compiling statements
Franklin Schmidt <fschmidt@gmail.com>
parents:
650
diff
changeset
|
1579 |
140cc5191b7a
start compiling statements
Franklin Schmidt <fschmidt@gmail.com>
parents:
650
diff
changeset
|
1580 Stmt toStmt() { |
140cc5191b7a
start compiling statements
Franklin Schmidt <fschmidt@gmail.com>
parents:
650
diff
changeset
|
1581 String className = "EXP" + ++classCounter; |
140cc5191b7a
start compiling statements
Franklin Schmidt <fschmidt@gmail.com>
parents:
650
diff
changeset
|
1582 String classCode = "" |
140cc5191b7a
start compiling statements
Franklin Schmidt <fschmidt@gmail.com>
parents:
650
diff
changeset
|
1583 +"package luan.impl;\n" |
654 | 1584 +"import luan.Luan;\n" |
652
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1585 +"import luan.LuanFunction;\n" |
651
140cc5191b7a
start compiling statements
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parents:
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diff
changeset
|
1586 +"import luan.LuanException;\n" |
657 | 1587 +"import luan.modules.PackageLuan;\n" |
651
140cc5191b7a
start compiling statements
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parents:
650
diff
changeset
|
1588 +"\n" |
140cc5191b7a
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parents:
650
diff
changeset
|
1589 +"public class " + className +" implements Stmt {\n" |
654 | 1590 +" @Override public void eval(LuanStateImpl luan) throws LuanException {\n" |
660 | 1591 +" Object t;\n" |
651
140cc5191b7a
start compiling statements
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diff
changeset
|
1592 +" " + code |
140cc5191b7a
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diff
changeset
|
1593 +" }\n" |
140cc5191b7a
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diff
changeset
|
1594 +"}\n" |
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diff
changeset
|
1595 ; |
140cc5191b7a
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diff
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|
1596 //System.out.println(code); |
140cc5191b7a
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diff
changeset
|
1597 try { |
652
067d9470184d
compile SetStmt and ForStmt
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parents:
651
diff
changeset
|
1598 Class cls = LuanJavaCompiler.compile("luan.impl."+className,"code",classCode); |
651
140cc5191b7a
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|
1599 return (Stmt)cls.newInstance(); |
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|
1600 } catch(ClassNotFoundException e) { |
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|
1601 throw new RuntimeException(e); |
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diff
changeset
|
1602 } catch(InstantiationException e) { |
140cc5191b7a
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diff
changeset
|
1603 throw new RuntimeException(e); |
140cc5191b7a
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diff
changeset
|
1604 } catch(IllegalAccessException e) { |
140cc5191b7a
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diff
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|
1605 throw new RuntimeException(e); |
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diff
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|
1606 } |
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diff
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|
1607 } |
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diff
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|
1608 } |
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|
1609 |
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|
1610 private static StmtString EMPTY_STMT = new StmtString(""); |
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|
1611 |
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|
1612 private static Stmt stmt(StmtString stmtStr) { |
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|
1613 return stmtStr==null ? null : stmtStr.toStmt(); |
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|
1614 } |
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diff
changeset
|
1615 |
652
067d9470184d
compile SetStmt and ForStmt
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parents:
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diff
changeset
|
1616 |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
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diff
changeset
|
1617 private static class SettableString { |
067d9470184d
compile SetStmt and ForStmt
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parents:
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diff
changeset
|
1618 final String code; |
067d9470184d
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parents:
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diff
changeset
|
1619 |
067d9470184d
compile SetStmt and ForStmt
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parents:
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diff
changeset
|
1620 SettableString(Settable settable) { |
067d9470184d
compile SetStmt and ForStmt
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parents:
651
diff
changeset
|
1621 if( settable==null ) throw new NullPointerException(); |
654 | 1622 int i = LuanImpl.addSettable(settable); |
1623 code = "LuanImpl.getSettable(" + i + ")"; | |
652
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1624 } |
067d9470184d
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Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1625 |
067d9470184d
compile SetStmt and ForStmt
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parents:
651
diff
changeset
|
1626 SettableString(String code) { |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1627 this.code = code; |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1628 } |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1629 |
067d9470184d
compile SetStmt and ForStmt
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parents:
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diff
changeset
|
1630 } |
067d9470184d
compile SetStmt and ForStmt
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parents:
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diff
changeset
|
1631 |
5
9ef0fd711101
start LuaParser
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parents:
diff
changeset
|
1632 } |