Mercurial Hosting > luan
annotate core/src/luan/impl/LuanParser.java @ 684:41f791e4206d
bug fixes
author | Franklin Schmidt <fschmidt@gmail.com> |
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date | Sat, 16 Apr 2016 21:42:19 -0600 |
parents | 0c334975d526 |
children | fc08c3b42010 |
rev | line source |
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1 package luan.impl; |
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2 |
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3 //import java.io.StringWriter; |
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4 //import java.io.PrintWriter; |
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5 import java.util.Set; |
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6 import java.util.HashSet; |
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7 import java.util.Arrays; |
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8 import java.util.List; |
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9 import java.util.ArrayList; |
676 | 10 import java.util.concurrent.atomic.AtomicInteger; |
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11 import luan.Luan; |
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12 import luan.LuanState; |
503 | 13 import luan.LuanTable; |
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14 import luan.modules.PackageLuan; |
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15 |
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16 |
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17 final class LuanParser { |
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18 |
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19 private interface Sym { |
674 | 20 public Expr exp(); |
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21 } |
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22 |
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23 private int symCounter = 0; |
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24 |
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25 private class LocalSym implements Sym { |
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26 final String name; |
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27 final String javaName; |
671 | 28 boolean isPointer = false; |
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29 |
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30 LocalSym(String name) { |
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31 this.name = name; |
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32 this.javaName = name + "_" + (++symCounter); |
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33 } |
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34 |
674 | 35 Stmts declaration(Expr value) { |
36 Stmts stmt = new Stmts(); | |
671 | 37 if( value==null ) { |
677 | 38 stmt.add( new Object() { |
671 | 39 @Override public String toString() { |
40 if( !isPointer ) | |
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41 return "Object " + javaName + "; "; |
671 | 42 else |
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43 return "final Pointer " + javaName + " = new Pointer(); "; |
671 | 44 } |
45 } ); | |
46 } else { | |
674 | 47 if( value.valType != Val.SINGLE ) throw new RuntimeException(); |
677 | 48 stmt.add( new Object() { |
671 | 49 @Override public String toString() { |
50 if( !isPointer ) | |
51 return "Object " + javaName + " = "; | |
52 else | |
53 return "final Pointer " + javaName + " = new Pointer("; | |
54 } | |
55 } ); | |
677 | 56 stmt.addAll(value); |
57 stmt.add( new Object() { | |
671 | 58 @Override public String toString() { |
59 if( !isPointer ) | |
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60 return "; "; |
671 | 61 else |
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62 return "); "; |
671 | 63 } |
64 } ); | |
65 } | |
66 return stmt; | |
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67 } |
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68 |
674 | 69 @Override public Expr exp() { |
70 Expr exp = new Expr(Val.SINGLE,false); | |
677 | 71 exp.add( new Object() { |
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72 @Override public String toString() { |
671 | 73 if( !isPointer ) |
74 return javaName; | |
75 else | |
76 return javaName + ".o"; | |
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77 } |
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78 } ); |
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79 return exp; |
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80 } |
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81 } |
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82 |
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83 private class UpSym implements Sym { |
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84 final String name; |
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85 final int i; |
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86 final String value; |
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87 |
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88 UpSym(String name,int i,String value) { |
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89 this.name = name; |
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90 this.i = i; |
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91 this.value = value; |
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92 } |
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93 |
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94 String init() { |
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95 return "upValues[" + i + "] = " + value + "; "; |
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96 } |
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97 |
674 | 98 @Override public Expr exp() { |
99 Expr exp = new Expr(Val.SINGLE,false); | |
677 | 100 exp.add( new Object() { |
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101 @Override public String toString() { |
671 | 102 return "upValues[" + i + "].o"; |
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103 } |
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104 } ); |
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105 return exp; |
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106 } |
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107 } |
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108 |
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109 private final class Frame { |
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110 final Frame parent; |
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111 final List<LocalSym> symbols = new ArrayList<LocalSym>(); |
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112 int loops = 0; |
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113 boolean isVarArg = false; |
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114 final List<UpSym> upValueSymbols = new ArrayList<UpSym>(); |
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115 |
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116 Frame() { |
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117 this.parent = null; |
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118 } |
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119 |
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120 Frame(Frame parent) { |
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121 this.parent = parent; |
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122 } |
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123 |
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124 LocalSym addLocalSym(String name) { |
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125 LocalSym sym = new LocalSym(name); |
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126 symbols.add(sym); |
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127 return sym; |
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128 } |
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129 |
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130 UpSym addUpSym(String name,String value) { |
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131 UpSym sym = new UpSym( name, upValueSymbols.size(), value ); |
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132 upValueSymbols.add(sym); |
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133 return sym; |
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134 } |
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135 |
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136 LocalSym getLocalSym(String name) { |
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137 int i = symbols.size(); |
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138 while( --i >= 0 ) { |
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139 LocalSym sym = symbols.get(i); |
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140 if( sym.name.equals(name) ) |
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141 return sym; |
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142 } |
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143 return null; |
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144 } |
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145 |
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146 UpSym getUpSym(String name) { |
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147 for( UpSym upSym : upValueSymbols ) { |
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148 if( upSym.name.equals(name) ) |
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149 return upSym; |
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150 } |
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151 for( Frame f=parent; f!=null; f=f.parent ) { |
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152 LocalSym sym = f.getLocalSym(name); |
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153 if( sym != null ) { |
671 | 154 sym.isPointer = true; |
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155 return addUpSym(name,sym.javaName); |
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156 } |
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157 } |
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158 return null; |
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159 } |
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160 |
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161 Sym getSym(String name) { |
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162 Sym sym = getLocalSym(name); |
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163 return sym != null ? sym : getUpSym(name); |
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164 } |
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165 |
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166 } |
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167 |
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168 private static class In { |
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169 static final In NOTHING = new In(false); |
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170 |
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171 final boolean template; |
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172 |
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173 private In(boolean template) { |
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174 this.template = template; |
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175 } |
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176 |
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177 In template() { |
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178 return template ? this : new In(true); |
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179 } |
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180 } |
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181 |
645 | 182 // final LuanSource source; |
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183 private Frame frame; |
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184 private final Parser parser; |
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185 private final Stmts top; |
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186 private boolean hasTemplateWrite = false; |
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187 |
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188 LuanParser(String sourceName,String sourceText) { |
645 | 189 // this.source = source; |
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190 this.frame = new Frame(); |
645 | 191 this.parser = new Parser(sourceName,sourceText); |
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192 this.top = new Stmts(); |
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193 } |
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194 |
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195 void addVar(String name) { |
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196 UpSym upSym = frame.addUpSym( "-ADDED-" ,"new Pointer()"); |
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197 if( name != null ) { |
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198 LocalSym sym = frame.addLocalSym( name ); |
671 | 199 sym.isPointer = true; |
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200 top.add( "final Pointer " + sym.javaName + " = upValues[" + upSym.i + "]; " ); |
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201 } |
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202 } |
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203 |
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204 private int symbolsSize() { |
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205 return frame.symbols.size(); |
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206 } |
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207 |
674 | 208 private Stmts addSymbol(String name,Expr value) { |
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209 final LocalSym sym = frame.addLocalSym(name); |
671 | 210 return sym.declaration(value); |
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211 } |
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212 |
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213 private Sym getSym(String name) { |
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214 return frame.getSym(name); |
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215 } |
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216 |
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217 private void popSymbols(int n) { |
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218 List<LocalSym> symbols = frame.symbols; |
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219 while( n-- > 0 ) { |
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220 symbols.remove(symbols.size()-1); |
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221 } |
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222 } |
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223 |
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224 private void incLoops() { |
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225 frame.loops++; |
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226 } |
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227 |
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228 private void decLoops() { |
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229 frame.loops--; |
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230 } |
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231 |
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232 private <T> T required(T t) throws ParseException { |
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233 if( t==null ) |
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234 throw parser.exception(); |
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235 return t; |
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236 } |
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237 |
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238 private <T> T required(T t,String msg) throws ParseException { |
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239 if( t==null ) |
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240 throw parser.exception(msg); |
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241 return t; |
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242 } |
674 | 243 |
678 | 244 private Class newFnClass(Stmts stmt) { |
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245 return toFnClass( stmt, frame.upValueSymbols ); |
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246 } |
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247 |
681 | 248 private Expr newFnExp(Stmts stmt,String name) { |
249 return toFnExp( stmt, frame.upValueSymbols, name ); | |
665 | 250 } |
251 | |
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252 Class Expression() throws ParseException { |
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253 Spaces(); |
678 | 254 parser.begin(); |
674 | 255 Expr expr = ExprZ(In.NOTHING); |
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256 if( expr != null && parser.endOfInput() ) { |
677 | 257 top.add( "return " ); |
258 top.addAll( expr ); | |
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259 top.add( "; " ); |
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260 top.hasReturn = true; |
678 | 261 return parser.success(newFnClass(top)); |
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262 } |
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263 return parser.failure(null); |
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264 } |
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265 |
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266 Class RequiredModule() throws ParseException { |
678 | 267 GetRequiredModule(); |
268 return newFnClass(top); | |
269 } | |
270 | |
271 String RequiredModuleSource() throws ParseException { | |
272 GetRequiredModule(); | |
273 return toFnString( top, frame.upValueSymbols ); | |
274 } | |
275 | |
276 void GetRequiredModule() throws ParseException { | |
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277 Spaces(); |
678 | 278 parser.begin(); |
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279 frame.isVarArg = true; |
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280 top.add( "final Object[] varArgs = LuanImpl.varArgs(args,0); " ); |
674 | 281 Stmts block = RequiredBlock(); |
677 | 282 top.addAll( block ); |
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283 top.hasReturn = block.hasReturn; |
678 | 284 if( !parser.endOfInput() ) |
285 throw parser.exception(); | |
286 parser.success(); | |
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287 } |
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288 |
674 | 289 private Stmts RequiredBlock() throws ParseException { |
290 Stmts stmts = new Stmts(); | |
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291 int stackStart = symbolsSize(); |
684 | 292 do { |
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293 Spaces(); |
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294 stmts.addNewLines(); |
684 | 295 Stmts stmt = Stmt(); |
296 if( stmt != null ) { | |
297 stmts.addAll(stmt); | |
298 stmts.hasReturn = stmt.hasReturn; | |
299 } | |
300 } while( !stmts.hasReturn && (StmtSep() || TemplateSep(stmts)) ); | |
301 Spaces(); | |
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302 while( StmtSep() ) |
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303 Spaces(); |
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304 stmts.addNewLines(); |
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305 int stackEnd = symbolsSize(); |
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306 popSymbols( stackEnd - stackStart ); |
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307 return stmts; |
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308 } |
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309 |
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310 private boolean StmtSep() throws ParseException { |
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311 return parser.match( ';' ) || EndOfLine(); |
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312 } |
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313 |
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314 private boolean TemplateSep(Stmts stmts) throws ParseException { |
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315 Stmts stmt = TemplateStmt(); |
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316 if( stmt != null ) { |
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317 stmts.addAll(stmt); |
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318 return true; |
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319 } |
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320 return false; |
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321 } |
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322 |
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323 private boolean EndOfLine() { |
684 | 324 if( MatchEndOfLine() ) { |
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325 parser.sb().append('\n'); |
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326 return true; |
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327 } else { |
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328 return false; |
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329 } |
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330 } |
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331 |
684 | 332 private boolean MatchEndOfLine() { |
333 return parser.match( "\r\n" ) || parser.match( '\r' ) || parser.match( '\n' ); | |
334 } | |
335 | |
336 private Stmts Stmt() throws ParseException { | |
674 | 337 Stmts stmt; |
684 | 338 if( (stmt=ReturnStmt()) != null |
339 || (stmt=FunctionStmt()) != null | |
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340 || (stmt=LocalStmt()) != null |
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341 || (stmt=LocalFunctionStmt()) != null |
652
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342 || (stmt=BreakStmt()) != null |
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343 || (stmt=ForStmt()) != null |
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344 || (stmt=DoStmt()) != null |
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345 || (stmt=WhileStmt()) != null |
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346 || (stmt=RepeatStmt()) != null |
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347 || (stmt=IfStmt()) != null |
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348 || (stmt=SetStmt()) != null |
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349 || (stmt=ExpressionsStmt()) != null |
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350 ) { |
684 | 351 return stmt; |
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352 } |
684 | 353 return null; |
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354 } |
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355 |
674 | 356 private Expr indexExpStr(Expr exp1,Expr exp2) { |
357 Expr exp = new Expr(Val.SINGLE,false); | |
677 | 358 exp.add( "luan.index(" ); |
359 exp.addAll( exp1.single() ); | |
360 exp.add( "," ); | |
361 exp.addAll( exp2.single() ); | |
362 exp.add( ")" ); | |
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363 return exp; |
654 | 364 } |
365 | |
674 | 366 private Expr callExpStr(Expr fn,Expr args) { |
367 Expr exp = new Expr(null,true); | |
677 | 368 exp.add( "Luan.checkFunction(" ); |
369 exp.addAll( fn.single() ); | |
370 exp.add( ").call(luan," ); | |
371 exp.addAll( args.array() ); | |
372 exp.add( ")" ); | |
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373 return exp; |
654 | 374 } |
375 | |
674 | 376 private Stmts TemplateStmt() throws ParseException { |
377 Expr exprs = TemplateExpressions(In.NOTHING); | |
369
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378 if( exprs == null ) |
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379 return null; |
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380 if( !hasTemplateWrite ) { |
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381 top.add(0,"final LuanFunction template_write = Luan.checkFunction(luan.index(PackageLuan.require(luan,\"luan:Io\"),\"template_write\")); "); |
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382 hasTemplateWrite = true; |
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383 } |
674 | 384 Stmts stmt = new Stmts(); |
680
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385 stmt.add( "template_write.call(luan," ); |
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386 stmt.addAll( exprs.array() ); |
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387 stmt.add( "); " ); |
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388 return stmt; |
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389 } |
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390 |
674 | 391 private Expr TemplateExpressions(In in) throws ParseException { |
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392 if( in.template ) |
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393 return null; |
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394 int start = parser.begin(); |
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395 if( !parser.match( "%>" ) ) |
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396 return parser.failure(null); |
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397 EndOfLine(); |
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398 In inTemplate = in.template(); |
674 | 399 List<Expr> builder = new ArrayList<Expr>(); |
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400 while(true) { |
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401 if( parser.match( "<%=" ) ) { |
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402 Spaces(); |
654 | 403 builder.add( RequiredExpr(inTemplate) ); |
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404 RequiredMatch( "%>" ); |
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405 } else if( parser.match( "<%" ) ) { |
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406 Spaces(); |
654 | 407 return parser.success(expString(builder)); |
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408 } else { |
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409 int i = parser.currentIndex(); |
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410 do { |
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411 if( parser.match( "%>" ) ) |
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412 throw parser.exception("'%>' unexpected"); |
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413 if( !parser.anyChar() ) |
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414 throw parser.exception("Unclosed template expression"); |
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415 } while( !parser.test( "<%" ) ); |
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416 String match = parser.textFrom(i); |
654 | 417 builder.add( constExpStr(match) ); |
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418 } |
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419 } |
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420 } |
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421 |
674 | 422 private Stmts ReturnStmt() throws ParseException { |
645 | 423 parser.begin(); |
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424 if( !Keyword("return") ) |
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425 return parser.failure(null); |
674 | 426 Expr exprs = ExpStringList(In.NOTHING); |
427 Stmts stmt = new Stmts(); | |
677 | 428 stmt.add( "return " ); |
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429 if( exprs != null ) |
677 | 430 stmt.addAll( exprs ); |
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431 else |
677 | 432 stmt.add( "LuanFunction.NOTHING" ); |
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433 stmt.add( "; " ); |
684 | 434 stmt.hasReturn = true; |
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435 return parser.success( stmt ); |
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436 } |
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437 |
674 | 438 private Stmts FunctionStmt() throws ParseException { |
104
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439 parser.begin(); |
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440 if( !Keyword("function") ) |
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441 return parser.failure(null); |
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442 |
645 | 443 parser.currentIndex(); |
681 | 444 String name = RequiredName(); |
445 Var var = nameVar(name); | |
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446 while( parser.match( '.' ) ) { |
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447 Spaces(); |
681 | 448 // Expr exp = NameExpr(); |
449 name = Name(); | |
450 if( name==null ) | |
636 | 451 return parser.failure(null); |
681 | 452 var = indexVar( var.exp(), constExpStr(name) ); |
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453 } |
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454 |
681 | 455 Expr fnDef = RequiredFunction(name); |
665 | 456 return parser.success( var.set(fnDef) ); |
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457 } |
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458 |
674 | 459 private Stmts LocalFunctionStmt() throws ParseException { |
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460 parser.begin(); |
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461 if( !(Keyword("local") && Keyword("function")) ) |
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462 return parser.failure(null); |
674 | 463 Stmts stmt = new Stmts(); |
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464 String name = RequiredName(); |
677 | 465 stmt.addAll( addSymbol(name,null) ); |
681 | 466 Expr fnDef = RequiredFunction(name); |
677 | 467 stmt.addAll( nameVar(name).set(fnDef) ); |
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468 return parser.success( stmt ); |
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469 } |
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470 |
674 | 471 private Stmts BreakStmt() throws ParseException { |
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472 parser.begin(); |
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473 if( !Keyword("break") ) |
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474 return parser.failure(null); |
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475 if( frame.loops <= 0 ) |
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476 throw parser.exception("'break' outside of loop"); |
674 | 477 Stmts stmt = new Stmts(); |
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478 stmt.add( "break; " ); |
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479 return parser.success( stmt ); |
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480 } |
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481 |
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482 int forCounter = 0; |
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483 |
674 | 484 private Stmts ForStmt() throws ParseException { |
645 | 485 parser.begin(); |
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486 int stackStart = symbolsSize(); |
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487 if( !Keyword("for") ) |
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488 return parser.failure(null); |
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489 List<String> names = RequiredNameList(); |
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490 if( !Keyword("in") ) |
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491 return parser.failure(null); |
674 | 492 Expr expr = RequiredExpr(In.NOTHING).single(); |
681 | 493 RequiredKeyword("do"); |
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494 |
654 | 495 String fnVar = "fn"+ ++forCounter; |
674 | 496 Expr fnExp = new Expr(null,false); |
677 | 497 fnExp.add( fnVar + ".call(luan)" ); |
674 | 498 Stmts stmt = new Stmts(); |
677 | 499 stmt.add( "" |
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500 +"LuanFunction "+fnVar+" = Luan.checkFunction(" |
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501 ); |
677 | 502 stmt.addAll( expr ); |
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503 stmt.add( "); " ); |
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504 stmt.add( "while(true) { " ); |
677 | 505 stmt.addAll( makeLocalSetStmt(names,fnExp) ); |
506 stmt.add( "if( " ); | |
507 stmt.addAll( nameVar(names.get(0)).exp() ); | |
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508 stmt.add( "==null ) break; " ); |
674 | 509 Stmts loop = RequiredLoopBlock(); |
681 | 510 RequiredKeyword("end"); |
677 | 511 stmt.addAll( loop ); |
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512 stmt.add( "} " ); |
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513 popSymbols( symbolsSize() - stackStart ); |
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514 return parser.success(stmt); |
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515 } |
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516 |
674 | 517 private Stmts DoStmt() throws ParseException { |
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518 parser.begin(); |
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519 if( !Keyword("do") ) |
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520 return parser.failure(null); |
674 | 521 Stmts stmt = RequiredBlock(); |
681 | 522 RequiredKeyword("end"); |
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523 return parser.success(stmt); |
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524 } |
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525 |
674 | 526 private Stmts LocalStmt() throws ParseException { |
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527 parser.begin(); |
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528 if( !Keyword("local") ) |
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529 return parser.failure(null); |
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530 List<String> names = NameList(); |
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531 if( names==null ) { |
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532 if( Keyword("function") ) |
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533 return parser.failure(null); // handled later |
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534 throw parser.exception("Invalid local statement"); |
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535 } |
674 | 536 Stmts stmt = new Stmts(); |
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537 if( parser.match( '=' ) ) { |
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538 Spaces(); |
674 | 539 Expr values = ExpStringList(In.NOTHING); |
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540 if( values==null ) |
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541 throw parser.exception("Expressions expected"); |
677 | 542 stmt.addAll( makeLocalSetStmt(names,values) ); |
671 | 543 } else { |
674 | 544 Expr value = new Expr(Val.SINGLE,false); |
677 | 545 value.add( "null" ); |
670
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546 for( String name : names ) { |
677 | 547 stmt.addAll( addSymbol(name,value) ); |
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548 } |
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549 } |
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550 return parser.success(stmt); |
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551 } |
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552 |
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553 private List<String> RequiredNameList() throws ParseException { |
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554 parser.begin(); |
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555 List<String> names = NameList(); |
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556 if( names==null ) |
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557 throw parser.exception("Name expected"); |
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558 return parser.success(names); |
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559 } |
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560 |
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561 private List<String> NameList() throws ParseException { |
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562 String name = Name(); |
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563 if( name==null ) |
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564 return null; |
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565 List<String> names = new ArrayList<String>(); |
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566 names.add(name); |
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567 while( (name=anotherName()) != null ) { |
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568 names.add(name); |
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569 } |
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570 return names; |
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571 } |
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572 |
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573 private String anotherName() throws ParseException { |
139
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574 parser.begin(); |
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575 if( !parser.match( ',' ) ) |
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576 return parser.failure(null); |
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577 Spaces(); |
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578 String name = Name(); |
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579 if( name==null ) |
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580 return parser.failure(null); |
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581 return parser.success(name); |
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582 } |
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583 |
674 | 584 private Stmts WhileStmt() throws ParseException { |
645 | 585 parser.begin(); |
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586 if( !Keyword("while") ) |
104
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587 return parser.failure(null); |
674 | 588 Expr cnd = RequiredExpr(In.NOTHING).single(); |
681 | 589 RequiredKeyword("do"); |
674 | 590 Stmts loop = RequiredLoopBlock(); |
681 | 591 RequiredKeyword("end"); |
674 | 592 Stmts stmt = new Stmts(); |
677 | 593 stmt.add( "while( Luan.checkBoolean(" ); |
594 stmt.addAll( cnd ); | |
679
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595 stmt.add( ") ) { " ); |
677 | 596 stmt.addAll( loop ); |
679
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597 stmt.add( "} " ); |
666
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598 return parser.success( stmt ); |
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599 } |
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600 |
674 | 601 private Stmts RepeatStmt() throws ParseException { |
645 | 602 parser.begin(); |
679
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603 if( !Keyword("repeat") ) |
104
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604 return parser.failure(null); |
674 | 605 Stmts loop =RequiredLoopBlock(); |
681 | 606 RequiredKeyword("until"); |
674 | 607 Expr cnd = RequiredExpr(In.NOTHING).single(); |
608 Stmts stmt = new Stmts(); | |
679
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609 stmt.add( "do { " ); |
677 | 610 stmt.addAll( loop ); |
611 stmt.add( "} while( !Luan.checkBoolean(" ); | |
612 stmt.addAll( cnd ); | |
679
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613 stmt.add( ") ); " ); |
666
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614 return parser.success( stmt ); |
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615 } |
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616 |
674 | 617 private Stmts RequiredLoopBlock() throws ParseException { |
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618 incLoops(); |
674 | 619 Stmts stmt = RequiredBlock(); |
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620 decLoops(); |
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621 return stmt; |
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622 } |
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623 |
674 | 624 private Stmts IfStmt() throws ParseException { |
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625 parser.begin(); |
679
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626 if( !Keyword("if") ) |
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627 return parser.failure(null); |
674 | 628 Stmts stmt = new Stmts(); |
629 Expr cnd; | |
630 Stmts block; | |
684 | 631 boolean hasReturn = true; |
674 | 632 cnd = RequiredExpr(In.NOTHING).single(); |
681 | 633 RequiredKeyword("then"); |
653
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634 block = RequiredBlock(); |
677 | 635 stmt.add( "if( Luan.checkBoolean(" ); |
636 stmt.addAll( cnd ); | |
679
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637 stmt.add( ") ) { " ); |
677 | 638 stmt.addAll( block ); |
684 | 639 if( !block.hasReturn ) |
640 hasReturn = false; | |
679
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641 while( Keyword("elseif") ) { |
674 | 642 cnd = RequiredExpr(In.NOTHING).single(); |
681 | 643 RequiredKeyword("then"); |
653
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644 block = RequiredBlock(); |
677 | 645 stmt.add( "} else if( Luan.checkBoolean(" ); |
646 stmt.addAll( cnd ); | |
679
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647 stmt.add( ") ) { " ); |
677 | 648 stmt.addAll( block ); |
684 | 649 if( !block.hasReturn ) |
650 hasReturn = false; | |
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651 } |
679
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652 if( Keyword("else") ) { |
653
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653 block = RequiredBlock(); |
679
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654 stmt.add( "} else { " ); |
677 | 655 stmt.addAll( block ); |
684 | 656 if( !block.hasReturn ) |
657 hasReturn = false; | |
658 } else { | |
659 hasReturn = false; | |
653
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660 } |
681 | 661 RequiredKeyword("end"); |
679
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662 stmt.add( "} " ); |
684 | 663 stmt.hasReturn = hasReturn; |
666
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664 return parser.success( stmt ); |
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665 } |
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666 |
674 | 667 private Stmts SetStmt() throws ParseException { |
104
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668 parser.begin(); |
660 | 669 List<Var> vars = new ArrayList<Var>(); |
670 Var v = SettableVar(); | |
671 if( v == null ) | |
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672 return parser.failure(null); |
660 | 673 vars.add(v); |
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674 while( parser.match( ',' ) ) { |
679
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675 Spaces(); |
660 | 676 v = SettableVar(); |
677 if( v == null ) | |
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678 return parser.failure(null); |
660 | 679 vars.add(v); |
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680 } |
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681 if( !parser.match( '=' ) ) |
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682 return parser.failure(null); |
679
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683 Spaces(); |
674 | 684 Expr values = ExpStringList(In.NOTHING); |
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685 if( values==null ) |
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686 // throw parser.exception("Expressions expected"); |
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687 return parser.failure(null); |
670
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688 return parser.success( makeSetStmt(vars,values) ); |
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689 } |
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690 |
674 | 691 private Stmts makeSetStmt(List<Var> vars,Expr values) throws ParseException { |
660 | 692 int n = vars.size(); |
693 if( n == 1 ) | |
670
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694 return vars.get(0).set(values); |
674 | 695 Stmts stmt = new Stmts(); |
696 String varName = values.valType==Val.ARRAY ? "a" : "t"; | |
677 | 697 stmt.add( varName + " = " ); |
698 stmt.addAll( values ); | |
679
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699 stmt.add( "; " ); |
674 | 700 Expr t = new Expr(values.valType,false); |
677 | 701 t.add( varName ); |
674 | 702 t = t.single(); |
677 | 703 stmt.addAll( vars.get(0).set(t) ); |
660 | 704 for( int i=1; i<n; i++ ) { |
677 | 705 t.clear(); |
706 t.add( "LuanImpl.pick(" + varName + ","+i+")" ); | |
707 stmt.addAll( vars.get(i).set(t) ); | |
660 | 708 } |
670
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709 return stmt; |
652
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710 } |
671 | 711 |
674 | 712 private Stmts makeLocalSetStmt(List<String> names,Expr values) throws ParseException { |
671 | 713 int n = names.size(); |
714 if( n == 1 ) | |
674 | 715 return addSymbol(names.get(0),values.single()); |
716 Stmts stmt = new Stmts(); | |
717 String varName = values.valType==Val.ARRAY ? "a" : "t"; | |
677 | 718 stmt.add( varName + " = " ); |
719 stmt.addAll( values ); | |
679
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720 stmt.add( "; " ); |
674 | 721 Expr t = new Expr(values.valType,false); |
677 | 722 t.add( varName ); |
674 | 723 t = t.single(); |
677 | 724 stmt.addAll( addSymbol(names.get(0),t) ); |
671 | 725 for( int i=1; i<n; i++ ) { |
677 | 726 t.clear(); |
727 t.add( "LuanImpl.pick(" + varName + ","+i+")" ); | |
728 stmt.addAll( addSymbol(names.get(i),t) ); | |
652
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729 } |
671 | 730 return stmt; |
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731 } |
671 | 732 |
674 | 733 private Stmts ExpressionsStmt() throws ParseException { |
104
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734 parser.begin(); |
674 | 735 Expr exp = ExprZ(In.NOTHING); |
651
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736 if( exp != null && exp.isStmt ) { |
674 | 737 Stmts stmt = new Stmts(); |
738 if( exp.valType==Val.SINGLE ) { | |
677 | 739 stmt.add( "LuanImpl.nop(" ); |
740 stmt.addAll( exp ); | |
741 stmt.add( ")" ); | |
666
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742 } else { |
677 | 743 stmt.addAll( exp ); |
666
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744 } |
679
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745 stmt.add( "; " ); |
666
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746 return parser.success( stmt ); |
651
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747 } |
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748 return parser.failure(null); |
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749 } |
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750 |
660 | 751 private Var SettableVar() throws ParseException { |
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752 int start = parser.begin(); |
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753 Var var = VarZ(In.NOTHING); |
660 | 754 if( var==null || !var.isSettable() ) |
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755 return parser.failure(null); |
660 | 756 return parser.success( var ); |
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757 } |
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758 |
674 | 759 private Expr RequiredExpr(In in) throws ParseException { |
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760 parser.begin(); |
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761 return parser.success(required(ExprZ(in),"Bad expression")); |
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762 } |
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763 |
674 | 764 private Expr ExprZ(In in) throws ParseException { |
449 | 765 return OrExpr(in); |
19
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766 } |
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767 |
674 | 768 private Expr OrExpr(In in) throws ParseException { |
645 | 769 parser.begin(); |
674 | 770 Expr exp = AndExpr(in); |
104
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771 if( exp==null ) |
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772 return parser.failure(null); |
679
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773 while( Keyword("or") ) { |
674 | 774 exp = exp.single(); |
775 Expr exp2 = required(RelExpr(in)).single(); | |
776 Expr newExp = new Expr(Val.SINGLE,true); | |
677 | 777 newExp.add( "(LuanImpl.cnd(t = " ); |
778 newExp.addAll( exp ); | |
779 newExp.add( ") ? t : (" ); | |
780 newExp.addAll( exp2 ); | |
781 newExp.add( "))" ); | |
666
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782 exp = newExp; |
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783 } |
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784 return parser.success(exp); |
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785 } |
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786 |
674 | 787 private Expr AndExpr(In in) throws ParseException { |
645 | 788 parser.begin(); |
674 | 789 Expr exp = RelExpr(in); |
104
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790 if( exp==null ) |
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791 return parser.failure(null); |
679
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792 while( Keyword("and") ) { |
674 | 793 exp = exp.single(); |
794 Expr exp2 = required(RelExpr(in)).single(); | |
795 Expr newExp = new Expr(Val.SINGLE,true); | |
677 | 796 newExp.add( "(LuanImpl.cnd(t = " ); |
797 newExp.addAll( exp ); | |
798 newExp.add( ") ? (" ); | |
799 newExp.addAll( exp2 ); | |
800 newExp.add( ") : t)" ); | |
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801 exp = newExp; |
104
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802 } |
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803 return parser.success(exp); |
18
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804 } |
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805 |
674 | 806 private Expr RelExpr(In in) throws ParseException { |
645 | 807 parser.begin(); |
674 | 808 Expr exp = ConcatExpr(in); |
104
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809 if( exp==null ) |
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810 return parser.failure(null); |
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811 while(true) { |
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812 if( parser.match("==") ) { |
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813 Spaces(); |
674 | 814 exp = exp.single(); |
815 Expr exp2 = required(ConcatExpr(in)).single(); | |
816 Expr newExp = new Expr(Val.SINGLE,false); | |
677 | 817 newExp.add( "LuanImpl.eq(luan," ); |
818 newExp.addAll( exp ); | |
819 newExp.add( "," ); | |
820 newExp.addAll( exp2 ); | |
821 newExp.add( ")" ); | |
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822 exp = newExp; |
104
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823 } else if( parser.match("~=") ) { |
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824 Spaces(); |
674 | 825 exp = exp.single(); |
826 Expr exp2 = required(ConcatExpr(in)).single(); | |
827 Expr newExp = new Expr(Val.SINGLE,false); | |
677 | 828 newExp.add( "!LuanImpl.eq(luan," ); |
829 newExp.addAll( exp ); | |
830 newExp.add( "," ); | |
831 newExp.addAll( exp2 ); | |
832 newExp.add( ")" ); | |
666
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833 exp = newExp; |
104
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834 } else if( parser.match("<=") ) { |
679
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835 Spaces(); |
674 | 836 exp = exp.single(); |
837 Expr exp2 = required(ConcatExpr(in)).single(); | |
838 Expr newExp = new Expr(Val.SINGLE,false); | |
677 | 839 newExp.add( "LuanImpl.le(luan," ); |
840 newExp.addAll( exp ); | |
841 newExp.add( "," ); | |
842 newExp.addAll( exp2 ); | |
843 newExp.add( ")" ); | |
666
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844 exp = newExp; |
104
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845 } else if( parser.match(">=") ) { |
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846 Spaces(); |
674 | 847 exp = exp.single(); |
848 Expr exp2 = required(ConcatExpr(in)).single(); | |
849 Expr newExp = new Expr(Val.SINGLE,false); | |
677 | 850 newExp.add( "LuanImpl.le(luan," ); |
851 newExp.addAll( exp2 ); | |
852 newExp.add( "," ); | |
853 newExp.addAll( exp ); | |
854 newExp.add( ")" ); | |
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855 exp = newExp; |
104
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856 } else if( parser.match("<") ) { |
679
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857 Spaces(); |
674 | 858 exp = exp.single(); |
859 Expr exp2 = required(ConcatExpr(in)).single(); | |
860 Expr newExp = new Expr(Val.SINGLE,false); | |
677 | 861 newExp.add( "LuanImpl.lt(luan," ); |
862 newExp.addAll( exp ); | |
863 newExp.add( "," ); | |
864 newExp.addAll( exp2 ); | |
865 newExp.add( ")" ); | |
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866 exp = newExp; |
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867 } else if( parser.match(">") ) { |
679
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868 Spaces(); |
674 | 869 exp = exp.single(); |
870 Expr exp2 = required(ConcatExpr(in)).single(); | |
871 Expr newExp = new Expr(Val.SINGLE,false); | |
677 | 872 newExp.add( "LuanImpl.lt(luan," ); |
873 newExp.addAll( exp2 ); | |
874 newExp.add( "," ); | |
875 newExp.addAll( exp ); | |
876 newExp.add( ")" ); | |
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877 exp = newExp; |
104
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878 } else |
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879 break; |
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880 } |
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881 return parser.success(exp); |
42
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882 } |
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|
883 |
674 | 884 private Expr ConcatExpr(In in) throws ParseException { |
645 | 885 parser.begin(); |
674 | 886 Expr exp = SumExpr(in); |
104
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887 if( exp==null ) |
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888 return parser.failure(null); |
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889 if( parser.match("..") ) { |
679
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890 Spaces(); |
674 | 891 exp = exp.single(); |
892 Expr exp2 = required(ConcatExpr(in)).single(); | |
893 Expr newExp = new Expr(Val.SINGLE,false); | |
677 | 894 newExp.add( "LuanImpl.concat(luan," ); |
895 newExp.addAll( exp ); | |
896 newExp.add( "," ); | |
897 newExp.addAll( exp2 ); | |
898 newExp.add( ")" ); | |
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899 exp = newExp; |
104
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900 } |
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901 return parser.success(exp); |
28
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902 } |
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903 |
674 | 904 private Expr SumExpr(In in) throws ParseException { |
645 | 905 parser.begin(); |
674 | 906 Expr exp = TermExpr(in); |
104
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907 if( exp==null ) |
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908 return parser.failure(null); |
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909 while(true) { |
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910 if( parser.match('+') ) { |
679
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|
911 Spaces(); |
674 | 912 exp = exp.single(); |
913 Expr exp2 = required(TermExpr(in)).single(); | |
914 Expr newExp = new Expr(Val.SINGLE,false); | |
677 | 915 newExp.add( "LuanImpl.add(luan," ); |
916 newExp.addAll( exp ); | |
917 newExp.add( "," ); | |
918 newExp.addAll( exp2 ); | |
919 newExp.add( ")" ); | |
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920 exp = newExp; |
104
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921 } else if( Minus() ) { |
679
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922 Spaces(); |
674 | 923 exp = exp.single(); |
924 Expr exp2 = required(TermExpr(in)).single(); | |
925 Expr newExp = new Expr(Val.SINGLE,false); | |
677 | 926 newExp.add( "LuanImpl.sub(luan," ); |
927 newExp.addAll( exp ); | |
928 newExp.add( "," ); | |
929 newExp.addAll( exp2 ); | |
930 newExp.add( ")" ); | |
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931 exp = newExp; |
104
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932 } else |
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933 break; |
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934 } |
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935 return parser.success(exp); |
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936 } |
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937 |
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938 private boolean Minus() { |
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939 parser.begin(); |
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940 return parser.match('-') && !parser.match('-') ? parser.success() : parser.failure(); |
12
9cea1aea5eef
CmdLine can run files
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941 } |
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|
942 |
674 | 943 private Expr TermExpr(In in) throws ParseException { |
645 | 944 parser.begin(); |
674 | 945 Expr exp = UnaryExpr(in); |
650
d658eab7bf4c
finish compiling operators
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|
946 if( exp==null ) |
104
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947 return parser.failure(null); |
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948 while(true) { |
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949 if( parser.match('*') ) { |
679
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950 Spaces(); |
674 | 951 exp = exp.single(); |
952 Expr exp2 = required(UnaryExpr(in)).single(); | |
953 Expr newExp = new Expr(Val.SINGLE,false); | |
677 | 954 newExp.add( "LuanImpl.mul(luan," ); |
955 newExp.addAll( exp ); | |
956 newExp.add( "," ); | |
957 newExp.addAll( exp2 ); | |
958 newExp.add( ")" ); | |
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959 exp = newExp; |
104
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960 } else if( parser.match('/') ) { |
679
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|
961 Spaces(); |
674 | 962 exp = exp.single(); |
963 Expr exp2 = required(UnaryExpr(in)).single(); | |
964 Expr newExp = new Expr(Val.SINGLE,false); | |
677 | 965 newExp.add( "LuanImpl.div(luan," ); |
966 newExp.addAll( exp ); | |
967 newExp.add( "," ); | |
968 newExp.addAll( exp2 ); | |
969 newExp.add( ")" ); | |
666
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970 exp = newExp; |
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971 } else if( Mod() ) { |
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972 Spaces(); |
674 | 973 exp = exp.single(); |
974 Expr exp2 = required(UnaryExpr(in)).single(); | |
975 Expr newExp = new Expr(Val.SINGLE,false); | |
677 | 976 newExp.add( "LuanImpl.mod(luan," ); |
977 newExp.addAll( exp ); | |
978 newExp.add( "," ); | |
979 newExp.addAll( exp2 ); | |
980 newExp.add( ")" ); | |
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981 exp = newExp; |
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982 } else |
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983 break; |
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984 } |
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985 return parser.success(exp); |
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986 } |
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987 |
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988 private boolean Mod() { |
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989 parser.begin(); |
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990 return parser.match('%') && !parser.match('>') ? parser.success() : parser.failure(); |
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991 } |
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992 |
674 | 993 private Expr UnaryExpr(In in) throws ParseException { |
645 | 994 parser.begin(); |
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995 if( parser.match('#') ) { |
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996 Spaces(); |
674 | 997 Expr exp = required(UnaryExpr(in)).single(); |
998 Expr newExp = new Expr(Val.SINGLE,false); | |
677 | 999 newExp.add( "LuanImpl.len(luan," ); |
1000 newExp.addAll( exp ); | |
1001 newExp.add( ")" ); | |
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1002 return parser.success(newExp); |
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1003 } |
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1004 if( Minus() ) { |
679
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1005 Spaces(); |
674 | 1006 Expr exp = required(UnaryExpr(in)).single(); |
1007 Expr newExp = new Expr(Val.SINGLE,false); | |
677 | 1008 newExp.add( "LuanImpl.unm(luan," ); |
1009 newExp.addAll( exp ); | |
1010 newExp.add( ")" ); | |
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1011 return parser.success(newExp); |
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1012 } |
679
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1013 if( Keyword("not") ) { |
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1014 Spaces(); |
674 | 1015 Expr exp = required(UnaryExpr(in)).single(); |
1016 Expr newExp = new Expr(Val.SINGLE,false); | |
677 | 1017 newExp.add( "!Luan.checkBoolean(" ); |
1018 newExp.addAll( exp ); | |
1019 newExp.add( ")" ); | |
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1020 return parser.success(newExp); |
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1021 } |
674 | 1022 Expr exp = PowExpr(in); |
104
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1023 if( exp==null ) |
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1024 return parser.failure(null); |
650
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1025 return parser.success(exp); |
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1026 } |
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1027 |
674 | 1028 private Expr PowExpr(In in) throws ParseException { |
645 | 1029 parser.begin(); |
674 | 1030 Expr exp1 = SingleExpr(in); |
657 | 1031 if( exp1==null ) |
104
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1032 return parser.failure(null); |
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1033 if( parser.match('^') ) { |
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1034 Spaces(); |
674 | 1035 Expr exp2 = required(PowExpr(in)); |
1036 Expr newExp = new Expr(Val.SINGLE,false); | |
677 | 1037 newExp.add( "LuanImpl.pow(luan," ); |
1038 newExp.addAll( exp1.single() ); | |
1039 newExp.add( "," ); | |
1040 newExp.addAll( exp2.single() ); | |
1041 newExp.add( ")" ); | |
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1042 exp1 = newExp; |
104
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1043 } |
650
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1044 return parser.success(exp1); |
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1045 } |
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1046 |
674 | 1047 private Expr SingleExpr(In in) throws ParseException { |
104
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1048 parser.begin(); |
681 | 1049 Expr exp = FunctionExpr(); |
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1050 if( exp != null ) |
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1051 return parser.success(exp); |
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1052 exp = VarExp(in); |
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1053 if( exp != null ) |
670
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1054 return parser.success(exp); |
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1055 exp = VarArgs(); |
670
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1056 if( exp != null ) |
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1057 return parser.success(exp); |
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1058 return parser.failure(null); |
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1059 } |
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1060 |
681 | 1061 private Expr FunctionExpr() throws ParseException { |
679
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1062 if( !Keyword("function") ) |
104
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1063 return null; |
681 | 1064 return RequiredFunction(null); |
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1065 } |
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1066 |
681 | 1067 private Expr RequiredFunction(String name) throws ParseException { |
678 | 1068 parser.begin(); |
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1069 RequiredMatch('('); |
679
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1070 Spaces(); |
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1071 frame = new Frame(frame); |
674 | 1072 Stmts stmt = new Stmts(); |
679
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1073 List<String> names = NameList(); |
104
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1074 if( names != null ) { |
674 | 1075 Expr args = new Expr(Val.ARRAY,false); |
677 | 1076 args.add( "args" ); |
1077 stmt.addAll( makeLocalSetStmt(names,args) ); | |
104
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1078 if( parser.match(',') ) { |
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1079 Spaces(); |
104
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1080 if( !parser.match("...") ) |
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1081 throw parser.exception(); |
679
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1082 Spaces(); |
104
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1083 frame.isVarArg = true; |
679
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1084 stmt.add( "final Object[] varArgs = LuanImpl.varArgs(args," + names.size() + "); " ); |
104
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1085 } |
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1086 } else if( parser.match("...") ) { |
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1087 Spaces(); |
104
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1088 frame.isVarArg = true; |
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1089 stmt.add( "final Object[] varArgs = LuanImpl.varArgs(args,0); " ); |
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1090 } |
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1091 RequiredMatch(')'); |
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1092 Spaces(); |
674 | 1093 Stmts block = RequiredBlock(); |
677 | 1094 stmt.addAll( block ); |
670
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1095 stmt.hasReturn = block.hasReturn; |
681 | 1096 Expr fnDef = newFnExp(stmt,name); |
1097 RequiredKeyword("end"); | |
104
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1098 frame = frame.parent; |
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1099 return parser.success(fnDef); |
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1100 } |
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1101 |
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1102 private Expr VarArgs() throws ParseException { |
645 | 1103 parser.begin(); |
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1104 if( !frame.isVarArg || !parser.match("...") ) |
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1105 return parser.failure(null); |
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1106 Spaces(); |
674 | 1107 Expr exp = new Expr(Val.ARRAY,false); |
677 | 1108 exp.add("varArgs"); |
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1109 return parser.success(exp); |
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1110 } |
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1111 |
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1112 private Expr TableExpr() throws ParseException { |
645 | 1113 parser.begin(); |
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1114 if( !parser.match('{') ) |
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1115 return parser.failure(null); |
682 | 1116 Expr tblExp = new Expr(Val.SINGLE,false); |
1117 tblExp.add( "LuanImpl.table(" ); | |
1118 Expr lastExp = tblExp; | |
1119 List<Expr> builder = new ArrayList<Expr>(); | |
1120 /* | |
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1121 Spaces(); |
655 | 1122 Field(builder); |
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1123 while( FieldSep() ) { |
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1124 Spaces(); |
655 | 1125 Field(builder); |
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1126 } |
682 | 1127 */ |
1128 do { | |
1129 Spaces(); lastExp.addNewLines(); | |
1130 Expr exp = Field(); | |
1131 if( exp != null ) { | |
1132 builder.add(exp); | |
1133 lastExp = exp; | |
1134 Spaces(); lastExp.addNewLines(); | |
1135 } | |
1136 } while( FieldSep() ); | |
674 | 1137 Expr exp = TemplateExpressions(In.NOTHING); |
245
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1138 if( exp != null ) |
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1139 builder.add(exp); |
107
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1140 if( !parser.match('}') ) |
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1141 throw parser.exception("Expected table element or '}'"); |
682 | 1142 tblExp.addAll( expString(builder).array() ); |
1143 tblExp.add( ")" ); | |
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1144 Spaces(); |
682 | 1145 tblExp.addNewLines(); |
1146 return parser.success( tblExp ); | |
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1147 } |
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1148 |
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1149 private boolean FieldSep() throws ParseException { |
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1150 return parser.anyOf(",;") || EndOfLine(); |
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1151 } |
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1152 |
682 | 1153 private Expr Field() throws ParseException { |
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1154 parser.begin(); |
674 | 1155 Expr exp = SubExpr(In.NOTHING); |
104
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1156 if( exp==null ) |
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1157 exp = NameExpr(); |
104
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1158 if( exp!=null && parser.match('=') ) { |
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1159 Spaces(); |
674 | 1160 Expr val = RequiredExpr(In.NOTHING).single(); |
1161 Expr newExp = new Expr(Val.SINGLE,false); | |
677 | 1162 newExp.add( "new TableField(" ); |
1163 newExp.addAll( exp ); | |
1164 newExp.add( "," ); | |
1165 newExp.addAll( val ); | |
1166 newExp.add( ")" ); | |
682 | 1167 return parser.success(newExp); |
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1168 } |
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1169 parser.rollback(); |
674 | 1170 Expr exprs = ExprZ(In.NOTHING); |
154
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1171 if( exprs != null ) { |
682 | 1172 return parser.success(exprs); |
104
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1173 } |
682 | 1174 return parser.failure(null); |
7
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1175 } |
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1176 |
674 | 1177 private Expr VarExp(In in) throws ParseException { |
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1178 Var var = VarZ(in); |
656 | 1179 return var==null ? null : var.exp(); |
8
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1180 } |
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1181 |
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1182 private Var VarZ(In in) throws ParseException { |
645 | 1183 parser.begin(); |
1184 Var var = VarStart(in); | |
104
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1185 if( var==null ) |
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1186 return parser.failure(null); |
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1187 Var var2; |
656 | 1188 while( (var2=Var2(in,var.exp())) != null ) { |
104
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1189 var = var2; |
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1190 } |
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1191 return parser.success(var); |
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1192 } |
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1193 |
645 | 1194 private Var VarStart(In in) throws ParseException { |
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1195 if( parser.match('(') ) { |
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1196 Spaces(); |
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1197 Expr exp = RequiredExpr(in).single(); |
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1198 RequiredMatch(')'); |
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1199 Spaces(); |
206
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1200 return exprVar(exp); |
104
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1201 } |
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1202 String name = Name(); |
206
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1203 if( name != null ) |
645 | 1204 return nameVar(name); |
674 | 1205 Expr exp; |
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1206 exp = TableExpr(); |
206
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1207 if( exp != null ) |
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1208 return exprVar(exp); |
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1209 exp = Literal(); |
206
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1210 if( exp != null ) |
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1211 return exprVar(exp); |
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1212 return null; |
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1213 } |
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1214 |
674 | 1215 private Var Var2(In in,Expr exp1) throws ParseException { |
104
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1216 parser.begin(); |
674 | 1217 Expr exp2 = SubExpr(in); |
104
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1218 if( exp2 != null ) |
656 | 1219 return parser.success(indexVar(exp1,exp2)); |
104
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1220 if( parser.match('.') ) { |
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1221 Spaces(); |
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1222 exp2 = NameExpr(); |
104
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1223 if( exp2!=null ) |
656 | 1224 return parser.success(indexVar(exp1,exp2)); |
636 | 1225 return parser.failure(null); |
104
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1226 } |
674 | 1227 Expr fnCall = Args( in, exp1, new ArrayList<Expr>() ); |
206
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1228 if( fnCall != null ) |
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1229 return parser.success(exprVar(fnCall)); |
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1230 return parser.failure(null); |
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1231 } |
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1232 |
503 | 1233 private interface Var { |
674 | 1234 public Expr exp() throws ParseException; |
660 | 1235 // public Settable settable() throws ParseException; |
1236 public boolean isSettable(); | |
674 | 1237 public Stmts set(Expr val) throws ParseException; |
503 | 1238 } |
1239 | |
674 | 1240 private Expr env() { |
670
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1241 Sym sym = getSym("_ENV"); |
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1242 if( sym != null ) |
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1243 return sym.exp(); |
503 | 1244 return null; |
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1245 } |
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1246 |
645 | 1247 private Var nameVar(final String name) { |
104
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1248 return new Var() { |
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1249 |
674 | 1250 public Expr exp() throws ParseException { |
670
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1251 Sym sym = getSym(name); |
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1252 if( sym != null ) |
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1253 return sym.exp(); |
674 | 1254 Expr envExpr = env(); |
503 | 1255 if( envExpr != null ) |
670
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1256 return indexExpStr( envExpr, constExpStr(name) ); |
503 | 1257 parser.failure(null); |
1258 throw parser.exception("name '"+name+"' not defined"); | |
104
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1259 } |
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1260 |
660 | 1261 public boolean isSettable() { |
1262 return true; | |
1263 } | |
674 | 1264 |
1265 public Stmts set(Expr val) throws ParseException { | |
670
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1266 Sym sym = getSym(name); |
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1267 if( sym != null ) { |
674 | 1268 Stmts stmt = new Stmts(); |
677 | 1269 stmt.addAll( sym.exp() ); |
1270 stmt.add( " = " ); | |
1271 stmt.addAll( val.single() ); | |
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1272 stmt.add( "; " ); |
670
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1273 return stmt; |
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1274 } |
674 | 1275 Expr envExpr = env(); |
670
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1276 if( envExpr != null ) |
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1277 return indexVar( envExpr, constExpStr(name) ).set(val); |
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1278 throw new RuntimeException(); |
660 | 1279 } |
104
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1280 }; |
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1281 } |
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1282 |
674 | 1283 private Var exprVar(final Expr expr) { |
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1284 return new Var() { |
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1285 |
674 | 1286 public Expr exp() { |
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1287 return expr; |
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1288 } |
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1289 |
660 | 1290 public boolean isSettable() { |
1291 return false; | |
1292 } | |
1293 | |
674 | 1294 public Stmts set(Expr val) { |
660 | 1295 throw new RuntimeException(); |
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1296 } |
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1297 }; |
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1298 } |
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1299 |
674 | 1300 private Var indexVar(final Expr table,final Expr key) { |
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1301 return new Var() { |
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1302 |
674 | 1303 public Expr exp() { |
656 | 1304 return indexExpStr( table, key ); |
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1305 } |
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1306 |
660 | 1307 public boolean isSettable() { |
1308 return true; | |
1309 } | |
674 | 1310 |
1311 public Stmts set(Expr val) { | |
1312 Stmts stmt = new Stmts(); | |
677 | 1313 stmt.add( "LuanImpl.put(luan," ); |
1314 stmt.addAll( table.single() ); | |
1315 stmt.add( "," ); | |
1316 stmt.addAll( key.single() ); | |
1317 stmt.add( "," ); | |
1318 stmt.addAll( val.single() ); | |
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1319 stmt.add( "); " ); |
666
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1320 return stmt; |
660 | 1321 } |
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1322 }; |
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1323 } |
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1324 |
674 | 1325 private Expr Args(In in,Expr fn,List<Expr> builder) throws ParseException { |
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1326 parser.begin(); |
129
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1327 return args(in,builder) |
656 | 1328 ? parser.success( callExpStr( fn, expString(builder) ) ) |
674 | 1329 : parser.failure((Expr)null); |
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1330 } |
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1331 |
674 | 1332 private boolean args(In in,List<Expr> builder) throws ParseException { |
645 | 1333 parser.begin(); |
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1334 if( parser.match('(') ) { |
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1335 Spaces(); |
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1336 ExpList(in,builder); // optional |
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1337 if( !parser.match(')') ) |
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1338 throw parser.exception("Expression or ')' expected"); |
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1339 Spaces(); |
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1340 return parser.success(); |
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1341 } |
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1342 Expr exp = TableExpr(); |
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1343 if( exp != null ) { |
655 | 1344 builder.add(exp); |
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1345 return parser.success(); |
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1346 } |
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1347 String s = StringLiteral(); |
107
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1348 if( s != null ) { |
657 | 1349 builder.add( constExpStr(s) ); |
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1350 return parser.success(); |
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1351 } |
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1352 return parser.failure(); |
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1353 } |
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1354 |
674 | 1355 private Expr ExpStringList(In in) throws ParseException { |
1356 List<Expr> builder = new ArrayList<Expr>(); | |
654 | 1357 return ExpList(in,builder) ? expString(builder) : null; |
652
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1358 } |
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1359 |
674 | 1360 private boolean ExpList(In in,List<Expr> builder) throws ParseException { |
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1361 parser.begin(); |
674 | 1362 Expr exp = TemplateExpressions(in); |
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1363 if( exp != null ) { |
654 | 1364 builder.add(exp); |
158
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1365 return parser.success(); |
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1366 } |
654 | 1367 exp = ExprZ(in); |
1368 if( exp==null ) | |
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1369 return parser.failure(); |
654 | 1370 builder.add(exp); |
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1371 while( parser.match(',') ) { |
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1372 Spaces(); |
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1373 exp = TemplateExpressions(in); |
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1374 if( exp != null ) { |
654 | 1375 builder.add(exp); |
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1376 return parser.success(); |
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1377 } |
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1378 builder.add( RequiredExpr(in) ); |
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1379 } |
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1380 return parser.success(); |
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1381 } |
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1382 |
674 | 1383 private Expr SubExpr(In in) throws ParseException { |
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1384 parser.begin(); |
209
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1385 if( !parser.match('[') || parser.test("[") || parser.test("=") ) |
104
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1386 return parser.failure(null); |
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1387 Spaces(); |
674 | 1388 Expr exp = RequiredExpr(In.NOTHING).single(); |
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1389 RequiredMatch(']'); |
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1390 Spaces(); |
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1391 return parser.success(exp); |
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1392 } |
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1393 |
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1394 private Expr NameExpr() throws ParseException { |
645 | 1395 parser.begin(); |
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1396 String name = Name(); |
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1397 if( name==null ) |
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1398 return parser.failure(null); |
656 | 1399 return parser.success(constExpStr(name)); |
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1400 } |
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1401 |
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1402 private String RequiredName() throws ParseException { |
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1403 parser.begin(); |
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1404 String name = Name(); |
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1405 if( name==null ) |
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1406 throw parser.exception("Name expected"); |
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1407 return parser.success(name); |
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1408 } |
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1409 |
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1410 private String Name() throws ParseException { |
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1411 int start = parser.begin(); |
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1412 if( !NameFirstChar() ) |
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1413 return parser.failure(null); |
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1414 while( NameChar() ); |
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1415 String match = parser.textFrom(start); |
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1416 if( keywords.contains(match) ) |
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|
1417 return parser.failure(null); |
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|
1418 Spaces(); |
104
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|
1419 return parser.success(match); |
17
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add local variables
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|
1420 } |
09d41f7490a8
add local variables
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1421 |
104
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|
1422 private boolean NameChar() { |
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1423 return NameFirstChar() || Digit(); |
754e6030c029
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1424 } |
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1425 |
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|
1426 private boolean NameFirstChar() { |
754e6030c029
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1427 return parser.inCharRange('a', 'z') || parser.inCharRange('A', 'Z') || parser.match('_'); |
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1428 } |
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1429 |
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|
1430 private void RequiredMatch(char c) throws ParseException { |
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|
1431 if( !parser.match(c) ) |
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|
1432 throw parser.exception("'"+c+"' expected"); |
9
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1433 } |
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|
1434 |
104
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1435 private void RequiredMatch(String s) throws ParseException { |
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1436 if( !parser.match(s) ) |
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1437 throw parser.exception("'"+s+"' expected"); |
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1438 } |
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|
1439 |
681 | 1440 private void RequiredKeyword(String keyword) throws ParseException { |
679
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|
1441 if( !Keyword(keyword) ) |
104
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|
1442 throw parser.exception("'"+keyword+"' expected"); |
9
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1443 } |
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1444 |
679
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1445 private boolean Keyword(String keyword) throws ParseException { |
104
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|
1446 parser.begin(); |
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1447 if( !parser.match(keyword) || NameChar() ) |
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|
1448 return parser.failure(); |
679
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|
1449 Spaces(); |
104
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1450 return parser.success(); |
12
9cea1aea5eef
CmdLine can run files
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1451 } |
9cea1aea5eef
CmdLine can run files
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1452 |
104
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1453 private static final Set<String> keywords = new HashSet<String>(Arrays.asList( |
12
9cea1aea5eef
CmdLine can run files
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|
1454 "and", |
9cea1aea5eef
CmdLine can run files
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|
1455 "break", |
9cea1aea5eef
CmdLine can run files
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|
1456 "do", |
9cea1aea5eef
CmdLine can run files
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|
1457 "else", |
9cea1aea5eef
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|
1458 "elseif", |
9cea1aea5eef
CmdLine can run files
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|
1459 "end", |
9cea1aea5eef
CmdLine can run files
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|
1460 "false", |
9cea1aea5eef
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|
1461 "for", |
9cea1aea5eef
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|
1462 "function", |
9cea1aea5eef
CmdLine can run files
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|
1463 "goto", |
9cea1aea5eef
CmdLine can run files
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|
1464 "if", |
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|
1465 "in", |
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|
1466 "local", |
9cea1aea5eef
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|
1467 "nil", |
9cea1aea5eef
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|
1468 "not", |
9cea1aea5eef
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|
1469 "or", |
9cea1aea5eef
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|
1470 "repeat", |
9cea1aea5eef
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|
1471 "return", |
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|
1472 "then", |
9cea1aea5eef
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|
1473 "true", |
9cea1aea5eef
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|
1474 "until", |
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|
1475 "while" |
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|
1476 )); |
9cea1aea5eef
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|
1477 |
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|
1478 private Expr Literal() throws ParseException { |
645 | 1479 parser.begin(); |
679
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|
1480 if( NilLiteral() ) { |
674 | 1481 Expr exp = new Expr(Val.SINGLE,false); |
677 | 1482 exp.add( "null" ); |
666
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|
1483 return parser.success(exp); |
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1484 } |
679
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|
1485 Boolean b = BooleanLiteral(); |
666
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|
1486 if( b != null ) { |
674 | 1487 Expr exp = new Expr(Val.SINGLE,false); |
677 | 1488 exp.add( b.toString() ); |
666
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1489 return parser.success(exp); |
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|
1490 } |
679
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|
1491 Number n = NumberLiteral(); |
657 | 1492 if( n != null ) { |
1493 String s = n.toString(); | |
1494 if( n instanceof Long ) | |
1495 s += "L"; | |
674 | 1496 Expr exp = new Expr(Val.SINGLE,false); |
677 | 1497 exp.add( s ); |
666
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1498 return parser.success(exp); |
657 | 1499 } |
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1500 String s = StringLiteral(); |
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1501 if( s != null ) |
656 | 1502 return parser.success(constExpStr(s)); |
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1503 return parser.failure(null); |
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1504 } |
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1505 |
684 | 1506 private static int STR_LIM = 65000; |
1507 | |
674 | 1508 private Expr constExpStr(String s) { |
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1509 int n = 0; |
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|
1510 int from = 0; |
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|
1511 while( (from = s.indexOf('\n',from) + 1) != 0 ) { |
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1512 n++; |
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|
1513 } |
664 | 1514 s = s |
1515 .replace("\\","\\\\") | |
1516 .replace("\"","\\\"") | |
1517 .replace("\n","\\n") | |
1518 .replace("\r","\\r") | |
1519 .replace("\t","\\t") | |
1520 .replace("\b","\\b") | |
1521 ; | |
684 | 1522 if( s.length() > STR_LIM ) { |
1523 int len = s.length(); | |
1524 StringBuilder sb = new StringBuilder(); | |
1525 sb.append( "LuanImpl.strconcat(" ); | |
1526 int start = 0; | |
1527 while(true) { | |
1528 int end = start + STR_LIM; | |
1529 if( end >= len ) | |
1530 break; | |
1531 sb.append( "\"" ).append( s.substring(start,end) ).append( "\"," ); | |
1532 start = end; | |
1533 } | |
1534 sb.append( "\"" ).append( s.substring(start) ).append( "\")" ); | |
1535 s = sb.toString(); | |
1536 } else | |
1537 s = "\"" + s + "\""; | |
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1538 while( n-- > 0 ) |
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|
1539 s += "\n"; |
674 | 1540 Expr exp = new Expr(Val.SINGLE,false); |
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1541 exp.add( s ); |
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1542 return exp; |
664 | 1543 } |
1544 | |
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1545 private boolean NilLiteral() throws ParseException { |
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|
1546 return Keyword("nil"); |
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1547 } |
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1548 |
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|
1549 private Boolean BooleanLiteral() throws ParseException { |
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1550 if( Keyword("true") ) |
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1551 return true; |
679
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1552 if( Keyword("false") ) |
104
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1553 return false; |
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|
1554 return null; |
5
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start LuaParser
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parents:
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|
1555 } |
9ef0fd711101
start LuaParser
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parents:
diff
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|
1556 |
679
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make java line numbers match
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|
1557 private Number NumberLiteral() throws ParseException { |
104
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1558 parser.begin(); |
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1559 Number n; |
754e6030c029
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|
1560 if( parser.matchIgnoreCase("0x") ) { |
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1561 n = HexNumber(); |
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remove parboiled and rewrite parser;
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parents:
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|
1562 } else { |
754e6030c029
remove parboiled and rewrite parser;
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|
1563 n = DecNumber(); |
754e6030c029
remove parboiled and rewrite parser;
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|
1564 } |
754e6030c029
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parents:
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|
1565 if( n==null || NameChar() ) |
754e6030c029
remove parboiled and rewrite parser;
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|
1566 return parser.failure(null); |
679
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make java line numbers match
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|
1567 Spaces(); |
104
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remove parboiled and rewrite parser;
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1568 return parser.success(n); |
754e6030c029
remove parboiled and rewrite parser;
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parents:
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|
1569 } |
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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|
1570 |
754e6030c029
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|
1571 private Number DecNumber() { |
754e6030c029
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|
1572 int start = parser.begin(); |
535
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1573 boolean isInt = true; |
104
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|
1574 if( Int() ) { |
535
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|
1575 if( parser.match('.') ) { |
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1576 isInt = false; |
104
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|
1577 Int(); // optional |
535
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|
1578 } |
104
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|
1579 } else if( parser.match('.') && Int() ) { |
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|
1580 // ok |
535
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1581 isInt = false; |
104
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|
1582 } else |
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|
1583 return parser.failure(null); |
535
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|
1584 if( Exponent() ) // optional |
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|
1585 isInt = false; |
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|
1586 String s = parser.textFrom(start); |
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|
1587 if( isInt ) { |
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|
1588 try { |
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|
1589 return parser.success(Integer.valueOf(s)); |
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|
1590 } catch(NumberFormatException e) {} |
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parse numeric constants to ints or longs if possible
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|
1591 try { |
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|
1592 return parser.success(Long.valueOf(s)); |
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|
1593 } catch(NumberFormatException e) {} |
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|
1594 } |
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|
1595 return parser.success(Double.valueOf(s)); |
5
9ef0fd711101
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parents:
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|
1596 } |
9ef0fd711101
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parents:
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|
1597 |
104
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1598 private boolean Exponent() { |
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1599 parser.begin(); |
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1600 if( !parser.matchIgnoreCase("e") ) |
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1601 return parser.failure(); |
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1602 parser.anyOf("+-"); // optional |
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1603 if( !Int() ) |
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1604 return parser.failure(); |
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|
1605 return parser.success(); |
5
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|
1606 } |
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1607 |
104
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1608 private boolean Int() { |
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1609 if( !Digit() ) |
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1610 return false; |
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1611 while( Digit() ); |
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1612 return true; |
5
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|
1613 } |
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1614 |
104
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|
1615 private boolean Digit() { |
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1616 return parser.inCharRange('0', '9'); |
16
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parents:
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diff
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|
1617 } |
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1618 |
104
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|
1619 private Number HexNumber() { |
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|
1620 int start = parser.begin(); |
535
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|
1621 long nLong = 0; |
104
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|
1622 double n; |
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|
1623 if( HexInt() ) { |
535
289908469e02
parse numeric constants to ints or longs if possible
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|
1624 nLong = Long.parseLong(parser.textFrom(start),16); |
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|
1625 n = (double)nLong; |
104
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|
1626 if( parser.match('.') ) { |
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|
1627 start = parser.currentIndex(); |
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|
1628 if( HexInt() ) { |
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1629 String dec = parser.textFrom(start); |
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1630 n += (double)Long.parseLong(dec,16) / Math.pow(16,dec.length()); |
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1631 } |
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|
1632 } |
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|
1633 } else if( parser.match('.') && HexInt() ) { |
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|
1634 String dec = parser.textFrom(start+1); |
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|
1635 n = (double)Long.parseLong(dec,16) / Math.pow(16,dec.length()); |
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|
1636 } else { |
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|
1637 return parser.failure(null); |
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|
1638 } |
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|
1639 if( parser.matchIgnoreCase("p") ) { |
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|
1640 parser.anyOf("+-"); // optional |
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|
1641 start = parser.currentIndex(); |
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|
1642 if( !HexInt() ) |
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|
1643 return parser.failure(null); |
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1644 n *= Math.pow(2,(double)Long.parseLong(parser.textFrom(start))); |
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|
1645 } |
535
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|
1646 if( nLong == n ) { |
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|
1647 int nInt = (int)nLong; |
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|
1648 if( nInt == nLong ) |
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|
1649 return parser.success(Integer.valueOf(nInt)); |
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changeset
|
1650 return parser.success(Long.valueOf(nLong)); |
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parse numeric constants to ints or longs if possible
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1651 } |
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1652 return parser.success(Double.valueOf(n)); |
16
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1653 } |
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1654 |
104
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1655 private boolean HexInt() { |
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1656 if( !HexDigit() ) |
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1657 return false; |
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1658 while( HexDigit() ); |
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|
1659 return true; |
16
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1660 } |
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finish number literals;
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1661 |
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1662 |
104
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1663 private boolean HexDigit() { |
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1664 return Digit() || parser.anyOf("abcdefABCDEF"); |
6
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1665 } |
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1666 |
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1667 private String StringLiteral() throws ParseException { |
104
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1668 String s; |
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1669 if( (s=QuotedString('"'))==null |
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1670 && (s=QuotedString('\''))==null |
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1671 && (s=LongString())==null |
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1672 ) |
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1673 return null; |
679
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1674 Spaces(); |
104
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1675 return s; |
16
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1676 } |
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1677 |
104
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1678 private String LongString() throws ParseException { |
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1679 parser.begin(); |
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1680 if( !parser.match('[') ) |
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|
1681 return parser.failure(null); |
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|
1682 int start = parser.currentIndex(); |
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1683 while( parser.match('=') ); |
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1684 int nEquals = parser.currentIndex() - start; |
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1685 if( !parser.match('[') ) |
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1686 return parser.failure(null); |
684 | 1687 MatchEndOfLine(); |
104
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1688 start = parser.currentIndex(); |
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1689 while( !LongBracketsEnd(nEquals) ) { |
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1690 if( !parser.anyChar() ) |
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|
1691 throw parser.exception("Unclosed long string"); |
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1692 } |
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|
1693 String s = parser.text.substring( start, parser.currentIndex() - nEquals - 2 ); |
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|
1694 return parser.success(s); |
6
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1695 } |
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1696 |
104
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|
1697 private String QuotedString(char quote) throws ParseException { |
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|
1698 parser.begin(); |
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|
1699 if( !parser.match(quote) ) |
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|
1700 return parser.failure(null); |
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|
1701 StringBuilder buf = new StringBuilder(); |
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|
1702 while( !parser.match(quote) ) { |
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1703 Character c = EscSeq(); |
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1704 if( c != null ) { |
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1705 buf.append(c); |
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|
1706 } else { |
271
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1707 if( parser.test('\r') || parser.test('\n') || !parser.anyChar() ) |
104
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|
1708 throw parser.exception("Unclosed string"); |
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|
1709 buf.append(parser.lastChar()); |
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|
1710 } |
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|
1711 } |
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|
1712 return parser.success(buf.toString()); |
6
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1713 } |
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1714 |
104
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|
1715 private Character EscSeq() { |
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|
1716 parser.begin(); |
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|
1717 if( !parser.match('\\') ) |
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|
1718 return parser.failure(null); |
155
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1719 if( parser.match('a') ) return parser.success('\u0007'); |
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1720 if( parser.match('b') ) return parser.success('\b'); |
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1721 if( parser.match('f') ) return parser.success('\f'); |
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1722 if( parser.match('n') ) return parser.success('\n'); |
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1723 if( parser.match('r') ) return parser.success('\r'); |
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1724 if( parser.match('t') ) return parser.success('\t'); |
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1725 if( parser.match('v') ) return parser.success('\u000b'); |
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|
1726 if( parser.match('\\') ) return parser.success('\\'); |
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1727 if( parser.match('"') ) return parser.success('"'); |
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1728 if( parser.match('\'') ) return parser.success('\''); |
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1729 int start = parser.currentIndex(); |
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1730 if( parser.match('x') && HexDigit() && HexDigit() ) |
155
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1731 return parser.success((char)Integer.parseInt(parser.textFrom(start+1),16)); |
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1732 if( Digit() ) { |
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|
1733 if( Digit() ) Digit(); // optional |
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1734 return parser.success((char)Integer.parseInt(parser.textFrom(start))); |
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1735 } |
684 | 1736 if( MatchEndOfLine() ) { |
271
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1737 return parser.success('\n'); |
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|
1738 } |
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|
1739 return parser.failure(null); |
14
2ddf85634d20
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|
1740 } |
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1741 |
679
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|
1742 private void Spaces() throws ParseException { |
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diff
changeset
|
1743 while( parser.anyOf(" \t") || Comment() || ContinueOnNextLine() ); |
14
2ddf85634d20
whitespace handling;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
12
diff
changeset
|
1744 } |
2ddf85634d20
whitespace handling;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
12
diff
changeset
|
1745 |
104
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remove parboiled and rewrite parser;
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parents:
99
diff
changeset
|
1746 private boolean ContinueOnNextLine() { |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1747 parser.begin(); |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1748 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
|
1749 } |
bca8fc5d928b
work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
6
diff
changeset
|
1750 |
247
b5995d77878a
fix parsing of comments
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parents:
245
diff
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|
1751 private boolean Comment() throws ParseException { |
b5995d77878a
fix parsing of comments
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parents:
245
diff
changeset
|
1752 if( LongComment() ) |
b5995d77878a
fix parsing of comments
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parents:
245
diff
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|
1753 return true; |
104
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remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1754 if( parser.match("--") ) { |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1755 while( parser.noneOf("\r\n") ); |
247
b5995d77878a
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parents:
245
diff
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|
1756 return true; |
104
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1757 } |
247
b5995d77878a
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parents:
245
diff
changeset
|
1758 return false; |
18
3971113699b8
add NumericForStmt
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
17
diff
changeset
|
1759 } |
3971113699b8
add NumericForStmt
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
17
diff
changeset
|
1760 |
247
b5995d77878a
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parents:
245
diff
changeset
|
1761 private boolean LongComment() throws ParseException { |
104
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1762 parser.begin(); |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
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|
1763 if( !parser.match("--[") ) |
754e6030c029
remove parboiled and rewrite parser;
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parents:
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diff
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|
1764 return parser.failure(); |
754e6030c029
remove parboiled and rewrite parser;
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parents:
99
diff
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|
1765 int start = parser.currentIndex(); |
754e6030c029
remove parboiled and rewrite parser;
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parents:
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diff
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|
1766 while( parser.match('=') ); |
754e6030c029
remove parboiled and rewrite parser;
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parents:
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diff
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|
1767 int nEquals = parser.currentIndex() - start; |
754e6030c029
remove parboiled and rewrite parser;
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parents:
99
diff
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|
1768 if( !parser.match('[') ) |
754e6030c029
remove parboiled and rewrite parser;
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parents:
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diff
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|
1769 return parser.failure(); |
754e6030c029
remove parboiled and rewrite parser;
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parents:
99
diff
changeset
|
1770 while( !LongBracketsEnd(nEquals) ) { |
679
43522473599d
make java line numbers match
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parents:
678
diff
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|
1771 if( !(EndOfLine() || parser.anyChar()) ) |
104
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remove parboiled and rewrite parser;
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parents:
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diff
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|
1772 throw parser.exception("Unclosed comment"); |
754e6030c029
remove parboiled and rewrite parser;
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parents:
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diff
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|
1773 } |
679
43522473599d
make java line numbers match
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diff
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|
1774 parser.upSb(); |
104
754e6030c029
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diff
changeset
|
1775 return parser.success(); |
754e6030c029
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|
1776 } |
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diff
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|
1777 |
754e6030c029
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|
1778 private boolean LongBracketsEnd(int nEquals) { |
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|
1779 parser.begin(); |
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|
1780 if( !parser.match(']') ) |
754e6030c029
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|
1781 return parser.failure(); |
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remove parboiled and rewrite parser;
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parents:
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diff
changeset
|
1782 while( nEquals-- > 0 ) { |
754e6030c029
remove parboiled and rewrite parser;
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diff
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|
1783 if( !parser.match('=') ) |
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|
1784 return parser.failure(); |
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parents:
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diff
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|
1785 } |
754e6030c029
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|
1786 if( !parser.match(']') ) |
754e6030c029
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|
1787 return parser.failure(); |
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|
1788 return parser.success(); |
12
9cea1aea5eef
CmdLine can run files
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parents:
11
diff
changeset
|
1789 } |
9cea1aea5eef
CmdLine can run files
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diff
changeset
|
1790 |
648
e387e4021afe
start compiler with len operator
Franklin Schmidt <fschmidt@gmail.com>
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changeset
|
1791 |
e387e4021afe
start compiler with len operator
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diff
changeset
|
1792 |
679
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make java line numbers match
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diff
changeset
|
1793 private class ParseList extends ArrayList { |
43522473599d
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diff
changeset
|
1794 |
43522473599d
make java line numbers match
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diff
changeset
|
1795 void addNewLines() { |
43522473599d
make java line numbers match
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diff
changeset
|
1796 if( parser.sb().length() > 0 ) { |
43522473599d
make java line numbers match
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678
diff
changeset
|
1797 add( parser.sb().toString() ); |
43522473599d
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diff
changeset
|
1798 parser.sb().setLength(0); |
43522473599d
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diff
changeset
|
1799 /* |
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diff
changeset
|
1800 if( parser.sourceName.equals("stdin") ) { |
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parents:
678
diff
changeset
|
1801 StringWriter sw = new StringWriter(); |
43522473599d
make java line numbers match
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678
diff
changeset
|
1802 new Throwable().printStackTrace(new PrintWriter(sw,true)); |
43522473599d
make java line numbers match
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parents:
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diff
changeset
|
1803 // add(sw.toString()); |
43522473599d
make java line numbers match
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diff
changeset
|
1804 } |
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diff
changeset
|
1805 */ |
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make java line numbers match
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changeset
|
1806 } |
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|
1807 } |
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changeset
|
1808 |
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diff
changeset
|
1809 ParseList() { |
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diff
changeset
|
1810 addNewLines(); |
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diff
changeset
|
1811 } |
677 | 1812 |
1813 @Override public boolean add(Object obj) { | |
1814 if( obj instanceof List ) throw new RuntimeException(); | |
1815 return super.add(obj); | |
1816 } | |
1817 | |
1818 @Override public void add(int index,Object obj) { | |
1819 if( obj instanceof List ) throw new RuntimeException(); | |
1820 super.add(index,obj); | |
1821 } | |
1822 | |
1823 @Override public String toString() { | |
1824 StringBuilder sb = new StringBuilder(); | |
1825 for( Object o : this ) { | |
1826 sb.append( o.toString() ); | |
1827 } | |
1828 return sb.toString(); | |
1829 } | |
1830 } | |
1831 | |
648
e387e4021afe
start compiler with len operator
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diff
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|
1832 |
676 | 1833 private static AtomicInteger classCounter = new AtomicInteger(); |
648
e387e4021afe
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diff
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|
1834 |
674 | 1835 private enum Val { SINGLE, ARRAY } |
1836 | |
679
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make java line numbers match
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diff
changeset
|
1837 private class Expr extends ParseList { |
674 | 1838 final Val valType; |
649
37f0cf43f191
UnaryExpr now compiled
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648
diff
changeset
|
1839 final boolean isStmt; |
674 | 1840 |
1841 Expr(Val valType,boolean isStmt) { | |
1842 this.valType = valType; | |
649
37f0cf43f191
UnaryExpr now compiled
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diff
changeset
|
1843 this.isStmt = isStmt; |
37f0cf43f191
UnaryExpr now compiled
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diff
changeset
|
1844 } |
37f0cf43f191
UnaryExpr now compiled
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diff
changeset
|
1845 |
674 | 1846 Expr single() { |
1847 if( valType==Val.SINGLE ) | |
666
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use lists to assemble source
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diff
changeset
|
1848 return this; |
674 | 1849 Expr exp = new Expr(Val.SINGLE,isStmt); |
677 | 1850 exp.add( valType==Val.ARRAY ? "LuanImpl.first(" : "Luan.first(" ); |
1851 exp.addAll( this ); | |
1852 exp.add( ")" ); | |
666
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|
1853 return exp; |
649
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diff
changeset
|
1854 } |
674 | 1855 |
1856 Expr array() { | |
1857 if( valType==Val.ARRAY ) | |
1858 return this; | |
1859 Expr exp = new Expr(Val.ARRAY,isStmt); | |
1860 if( valType==Val.SINGLE ) { | |
677 | 1861 exp.add( "new Object[]{" ); |
1862 exp.addAll( this ); | |
1863 exp.add( "}" ); | |
674 | 1864 } else { |
677 | 1865 exp.add( "Luan.array(" ); |
1866 exp.addAll( this ); | |
1867 exp.add( ")" ); | |
674 | 1868 } |
1869 return exp; | |
1870 } | |
1871 | |
650
d658eab7bf4c
finish compiling operators
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diff
changeset
|
1872 } |
d658eab7bf4c
finish compiling operators
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|
1873 |
674 | 1874 private Expr expString(List<Expr> list) { |
1875 Expr exp = new Expr(Val.ARRAY,false); | |
652
067d9470184d
compile SetStmt and ForStmt
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diff
changeset
|
1876 switch(list.size()) { |
067d9470184d
compile SetStmt and ForStmt
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diff
changeset
|
1877 case 0: |
677 | 1878 exp.add("LuanFunction.NOTHING"); |
666
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diff
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|
1879 return exp; |
652
067d9470184d
compile SetStmt and ForStmt
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changeset
|
1880 case 1: |
653
538b0ae08faa
compile IfStmt and BreakStmt
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changeset
|
1881 return list.get(0); |
652
067d9470184d
compile SetStmt and ForStmt
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changeset
|
1882 default: |
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compile SetStmt and ForStmt
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changeset
|
1883 int lastI = list.size() - 1; |
677 | 1884 exp.add( "new Object[]{" ); |
652
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compile SetStmt and ForStmt
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diff
changeset
|
1885 for( int i=0; i<lastI; i++ ) { |
677 | 1886 exp.addAll( list.get(i).single() ); |
1887 exp.add( "," ); | |
652
067d9470184d
compile SetStmt and ForStmt
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diff
changeset
|
1888 } |
674 | 1889 Expr last = list.get(lastI); |
1890 if( last.valType==Val.SINGLE ) { | |
677 | 1891 exp.addAll( last ); |
1892 exp.add( "}" ); | |
652
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compile SetStmt and ForStmt
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diff
changeset
|
1893 } else { |
677 | 1894 exp.add( "}" ); |
1895 exp.add( 0, "LuanImpl.concatArgs(" ); | |
1896 exp.add( "," ); | |
1897 exp.addAll( last ); | |
1898 exp.add( ")" ); | |
652
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|
1899 } |
666
2f449ccf54d2
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|
1900 return exp; |
652
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changeset
|
1901 } |
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|
1902 } |
657 | 1903 |
679
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changeset
|
1904 private class Stmts extends ParseList { |
663
b438a47196bc
finish compiling function blocks
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662
diff
changeset
|
1905 boolean hasReturn = false; |
651
140cc5191b7a
start compiling statements
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diff
changeset
|
1906 } |
140cc5191b7a
start compiling statements
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diff
changeset
|
1907 |
677 | 1908 private Class toFnClass(Stmts stmts,List<UpSym> upValueSymbols) { |
676 | 1909 String className = "EXP" + classCounter.incrementAndGet(); |
678 | 1910 String classCode = toFnString(stmts,upValueSymbols,className); |
1911 try { | |
1912 //System.out.println(parser.sourceName); | |
1913 //System.out.println(classCode); | |
1914 return LuanJavaCompiler.compile("luan.impl."+className,parser.sourceName,classCode); | |
1915 } catch(ClassNotFoundException e) { | |
1916 throw new RuntimeException(e); | |
1917 } | |
1918 } | |
1919 | |
1920 private String toFnString(Stmts stmts,List<UpSym> upValueSymbols) { | |
1921 String className = "EXP" + classCounter.incrementAndGet(); | |
1922 return toFnString(stmts,upValueSymbols,className); | |
1923 } | |
1924 | |
1925 private String toFnString(Stmts stmts,List<UpSym> upValueSymbols,String className) { | |
1926 if( !stmts.hasReturn ) | |
679
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1927 stmts.add( "\nreturn LuanFunction.NOTHING;" ); |
678 | 1928 return "" |
679
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1929 +"package luan.impl; " |
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1930 +"import luan.Luan; " |
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1931 +"import luan.LuanFunction; " |
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1932 +"import luan.LuanState; " |
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1933 +"import luan.LuanJava; " |
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1934 +"import luan.LuanException; " |
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1935 +"import luan.modules.PackageLuan; " |
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1936 |
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1937 +"public class " + className +" extends Closure { " |
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1938 +"public "+className+"(LuanJava java) throws LuanException { " |
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1939 +"super("+upValueSymbols.size()+",java); " |
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1940 + init(upValueSymbols) |
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1941 +"} " |
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1942 |
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1943 +"@Override public Object doCall(LuanState luan,Object[] args) throws LuanException { " |
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1944 +"Object t; " |
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1945 +"Object[] a; " |
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1946 + stmts |
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1947 +"\n} " |
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1948 +"}\n" |
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1949 ; |
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1950 } |
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1951 |
681 | 1952 private Expr toFnExp(Stmts stmt,List<UpSym> upValueSymbols,String name) { |
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1953 stmt.addNewLines(); |
678 | 1954 if( !stmt.hasReturn ) |
679
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1955 stmt.add( "return LuanFunction.NOTHING; " ); |
674 | 1956 Expr exp = new Expr(Val.SINGLE,false); |
677 | 1957 exp.add( "" |
679
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1958 +"new Closure("+upValueSymbols.size()+",java) { " |
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1959 +"{ " |
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1960 + init(upValueSymbols) |
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1961 +"} " |
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1962 +"@Override public Object doCall(LuanState luan,Object[] args) throws LuanException { " |
681 | 1963 ); |
1964 if( name != null ) { | |
1965 exp.add( "" | |
1966 +"return _" + name + "(luan,args); " | |
1967 +"} " | |
1968 +"private Object _" + name + "(LuanState luan,Object[] args) throws LuanException { " | |
1969 ); | |
1970 } | |
1971 exp.add( "" | |
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1972 +"Object t; " |
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1973 +"Object[] a; " |
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1974 ); |
677 | 1975 exp.addAll( stmt ); |
1976 exp.add( "" | |
679
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1977 +"} " |
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1978 +"} " |
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1979 ); |
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1980 return exp; |
665 | 1981 } |
1982 | |
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1983 private static String init(List<UpSym> upValueSymbols) { |
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1984 StringBuilder sb = new StringBuilder(); |
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1985 for( UpSym upSym : upValueSymbols ) { |
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1986 sb.append( upSym.init() ); |
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1987 } |
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1988 return sb.toString(); |
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1989 } |
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1990 |
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1991 } |