Mercurial Hosting > luan
annotate core/src/luan/impl/LuanParser.java @ 708:77e0c859c8a3
fix luan_to_java and fix line numbers
author | Franklin Schmidt <fschmidt@gmail.com> |
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date | Wed, 18 May 2016 18:11:00 -0600 |
parents | 61b36d5895df |
children | 217b047afd93 |
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 } |
688 | 151 if( parent != null ) { |
152 LocalSym sym = parent.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 } |
688 | 157 UpSym upSym = parent.getUpSym(name); |
158 if( upSym != null ) { | |
159 return addUpSym(name,"parentUpValues["+upSym.i+"]"); | |
160 } | |
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161 } |
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162 return null; |
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163 } |
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164 |
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165 Sym getSym(String name) { |
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166 Sym sym = getLocalSym(name); |
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167 return sym != null ? sym : getUpSym(name); |
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168 } |
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169 |
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170 } |
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171 |
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172 private static class In { |
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173 static final In NOTHING = new In(false); |
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174 |
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175 final boolean template; |
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176 |
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177 private In(boolean template) { |
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178 this.template = template; |
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179 } |
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180 |
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181 In template() { |
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182 return template ? this : new In(true); |
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183 } |
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184 } |
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185 |
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186 private Frame frame; |
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187 private final Parser parser; |
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188 private final Stmts top; |
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189 |
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190 LuanParser(String sourceText,String sourceName) { |
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191 this.frame = new Frame(); |
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192 this.parser = new Parser(sourceText,sourceName); |
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193 this.top = new Stmts(); |
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194 } |
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195 |
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196 void addVar(String name) { |
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197 UpSym upSym = frame.addUpSym( "-ADDED-" ,"new Pointer()"); |
687 | 198 LocalSym sym = frame.addLocalSym( name ); |
199 sym.isPointer = true; | |
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 private int symbolsSize() { |
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204 return frame.symbols.size(); |
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205 } |
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206 |
674 | 207 private Stmts addSymbol(String name,Expr value) { |
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208 final LocalSym sym = frame.addLocalSym(name); |
671 | 209 return sym.declaration(value); |
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210 } |
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211 |
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212 private Sym getSym(String name) { |
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213 return frame.getSym(name); |
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214 } |
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215 |
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216 private void popSymbols(int n) { |
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217 List<LocalSym> symbols = frame.symbols; |
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218 while( n-- > 0 ) { |
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219 symbols.remove(symbols.size()-1); |
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220 } |
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221 } |
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222 |
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223 private void incLoops() { |
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224 frame.loops++; |
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225 } |
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226 |
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227 private void decLoops() { |
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228 frame.loops--; |
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229 } |
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230 |
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231 private <T> T required(T t) throws ParseException { |
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232 if( t==null ) |
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233 throw parser.exception(); |
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234 return t; |
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235 } |
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236 |
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237 private <T> T required(T t,String msg) throws ParseException { |
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238 if( t==null ) |
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239 throw parser.exception(msg); |
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240 return t; |
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241 } |
674 | 242 |
678 | 243 private Class newFnClass(Stmts stmt) { |
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244 return toFnClass( stmt, frame.upValueSymbols ); |
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245 } |
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246 |
681 | 247 private Expr newFnExp(Stmts stmt,String name) { |
248 return toFnExp( stmt, frame.upValueSymbols, name ); | |
665 | 249 } |
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250 /* |
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251 Class Expression() throws ParseException { |
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252 Spaces(); |
678 | 253 parser.begin(); |
674 | 254 Expr expr = ExprZ(In.NOTHING); |
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255 if( expr != null && parser.endOfInput() ) { |
677 | 256 top.add( "return " ); |
257 top.addAll( expr ); | |
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258 top.add( "; " ); |
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259 top.hasReturn = true; |
678 | 260 return parser.success(newFnClass(top)); |
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261 } |
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262 return parser.failure(null); |
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263 } |
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264 */ |
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265 Class RequiredModule() throws ParseException { |
678 | 266 GetRequiredModule(); |
267 return newFnClass(top); | |
268 } | |
269 | |
270 String RequiredModuleSource() throws ParseException { | |
271 GetRequiredModule(); | |
272 return toFnString( top, frame.upValueSymbols ); | |
273 } | |
274 | |
275 void GetRequiredModule() throws ParseException { | |
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276 Spaces(); |
678 | 277 parser.begin(); |
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278 frame.isVarArg = true; |
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279 top.add( "final Object[] varArgs = LuanImpl.varArgs(args,0); " ); |
674 | 280 Stmts block = RequiredBlock(); |
677 | 281 top.addAll( block ); |
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282 top.hasReturn = block.hasReturn; |
678 | 283 if( !parser.endOfInput() ) |
284 throw parser.exception(); | |
285 parser.success(); | |
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286 } |
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287 |
674 | 288 private Stmts RequiredBlock() throws ParseException { |
289 Stmts stmts = new Stmts(); | |
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290 int stackStart = symbolsSize(); |
684 | 291 do { |
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292 Spaces(); |
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293 stmts.addNewLines(); |
684 | 294 Stmts stmt = Stmt(); |
295 if( stmt != null ) { | |
296 stmts.addAll(stmt); | |
297 stmts.hasReturn = stmt.hasReturn; | |
298 } | |
299 } while( !stmts.hasReturn && (StmtSep() || TemplateSep(stmts)) ); | |
300 Spaces(); | |
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301 while( StmtSep() ) |
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302 Spaces(); |
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303 stmts.addNewLines(); |
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304 int stackEnd = symbolsSize(); |
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305 popSymbols( stackEnd - stackStart ); |
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306 return stmts; |
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307 } |
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308 |
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309 private boolean StmtSep() throws ParseException { |
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310 return parser.match( ';' ) || EndOfLine(); |
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311 } |
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312 |
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313 private boolean TemplateSep(Stmts stmts) throws ParseException { |
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314 Stmts stmt = TemplateStmt(); |
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315 if( stmt != null ) { |
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316 stmts.addAll(stmt); |
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317 return true; |
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318 } |
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319 return false; |
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320 } |
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321 |
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322 private boolean EndOfLine() { |
684 | 323 if( MatchEndOfLine() ) { |
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324 parser.sb().append('\n'); |
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325 return true; |
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326 } else { |
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327 return false; |
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328 } |
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329 } |
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330 |
684 | 331 private boolean MatchEndOfLine() { |
332 return parser.match( "\r\n" ) || parser.match( '\r' ) || parser.match( '\n' ); | |
333 } | |
334 | |
335 private Stmts Stmt() throws ParseException { | |
674 | 336 Stmts stmt; |
684 | 337 if( (stmt=ReturnStmt()) != null |
338 || (stmt=FunctionStmt()) != null | |
670
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339 || (stmt=LocalStmt()) != null |
661
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340 || (stmt=LocalFunctionStmt()) != null |
652
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341 || (stmt=BreakStmt()) != null |
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342 || (stmt=ForStmt()) != null |
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343 || (stmt=DoStmt()) != null |
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344 || (stmt=WhileStmt()) != null |
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345 || (stmt=RepeatStmt()) != null |
653
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346 || (stmt=IfStmt()) != null |
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347 || (stmt=SetStmt()) != null |
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348 || (stmt=ExpressionsStmt()) != null |
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349 ) { |
684 | 350 return stmt; |
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351 } |
684 | 352 return null; |
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353 } |
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354 |
674 | 355 private Expr indexExpStr(Expr exp1,Expr exp2) { |
356 Expr exp = new Expr(Val.SINGLE,false); | |
677 | 357 exp.add( "luan.index(" ); |
358 exp.addAll( exp1.single() ); | |
359 exp.add( "," ); | |
360 exp.addAll( exp2.single() ); | |
361 exp.add( ")" ); | |
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362 return exp; |
654 | 363 } |
364 | |
674 | 365 private Expr callExpStr(Expr fn,Expr args) { |
366 Expr exp = new Expr(null,true); | |
677 | 367 exp.add( "Luan.checkFunction(" ); |
368 exp.addAll( fn.single() ); | |
369 exp.add( ").call(luan," ); | |
370 exp.addAll( args.array() ); | |
371 exp.add( ")" ); | |
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372 return exp; |
654 | 373 } |
374 | |
674 | 375 private Stmts TemplateStmt() throws ParseException { |
376 Expr exprs = TemplateExpressions(In.NOTHING); | |
369
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377 if( exprs == null ) |
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378 return null; |
674 | 379 Stmts stmt = new Stmts(); |
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380 stmt.add( "Luan.checkFunction(luan.index(PackageLuan.require(luan,\"luan:Io.luan\"),\"template_write\")).call(luan," ); |
680
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381 stmt.addAll( exprs.array() ); |
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382 stmt.add( "); " ); |
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383 return stmt; |
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384 } |
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385 |
674 | 386 private Expr TemplateExpressions(In in) throws ParseException { |
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387 if( in.template ) |
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388 return null; |
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389 int start = parser.begin(); |
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390 if( !parser.match( "%>" ) ) |
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391 return parser.failure(null); |
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392 EndOfLine(); |
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393 In inTemplate = in.template(); |
674 | 394 List<Expr> builder = new ArrayList<Expr>(); |
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395 while(true) { |
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396 if( parser.match( "<%=" ) ) { |
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397 Spaces(); |
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398 Expr exp = new Expr(Val.SINGLE,false); |
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399 exp.addAll( RequiredExpr(inTemplate) ); |
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400 builder.add(exp); |
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401 RequiredMatch( "%>" ); |
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402 } else if( parser.match( "<%" ) ) { |
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403 Spaces(); |
654 | 404 return parser.success(expString(builder)); |
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405 } else { |
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406 int i = parser.currentIndex(); |
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407 do { |
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408 if( parser.match( "%>" ) ) |
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409 throw parser.exception("'%>' unexpected"); |
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410 if( !parser.anyChar() ) |
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411 throw parser.exception("Unclosed template expression"); |
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412 } while( !parser.test( "<%" ) ); |
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413 String match = parser.textFrom(i); |
654 | 414 builder.add( constExpStr(match) ); |
104
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415 } |
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416 } |
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417 } |
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418 |
674 | 419 private Stmts ReturnStmt() throws ParseException { |
645 | 420 parser.begin(); |
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421 if( !Keyword("return") ) |
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422 return parser.failure(null); |
674 | 423 Expr exprs = ExpStringList(In.NOTHING); |
424 Stmts stmt = new Stmts(); | |
677 | 425 stmt.add( "return " ); |
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426 if( exprs != null ) |
677 | 427 stmt.addAll( exprs ); |
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428 else |
677 | 429 stmt.add( "LuanFunction.NOTHING" ); |
679
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430 stmt.add( "; " ); |
684 | 431 stmt.hasReturn = true; |
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432 return parser.success( stmt ); |
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433 } |
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434 |
674 | 435 private Stmts FunctionStmt() throws ParseException { |
104
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436 parser.begin(); |
679
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437 if( !Keyword("function") ) |
104
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438 return parser.failure(null); |
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439 |
645 | 440 parser.currentIndex(); |
681 | 441 String name = RequiredName(); |
442 Var var = nameVar(name); | |
104
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443 while( parser.match( '.' ) ) { |
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444 Spaces(); |
681 | 445 // Expr exp = NameExpr(); |
446 name = Name(); | |
447 if( name==null ) | |
636 | 448 return parser.failure(null); |
681 | 449 var = indexVar( var.exp(), constExpStr(name) ); |
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450 } |
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451 |
681 | 452 Expr fnDef = RequiredFunction(name); |
665 | 453 return parser.success( var.set(fnDef) ); |
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454 } |
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455 |
674 | 456 private Stmts LocalFunctionStmt() throws ParseException { |
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457 parser.begin(); |
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458 if( !(Keyword("local") && Keyword("function")) ) |
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459 return parser.failure(null); |
674 | 460 Stmts stmt = new Stmts(); |
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461 String name = RequiredName(); |
677 | 462 stmt.addAll( addSymbol(name,null) ); |
681 | 463 Expr fnDef = RequiredFunction(name); |
677 | 464 stmt.addAll( nameVar(name).set(fnDef) ); |
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465 return parser.success( stmt ); |
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466 } |
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467 |
674 | 468 private Stmts BreakStmt() throws ParseException { |
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469 parser.begin(); |
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470 if( !Keyword("break") ) |
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471 return parser.failure(null); |
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472 if( frame.loops <= 0 ) |
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473 throw parser.exception("'break' outside of loop"); |
674 | 474 Stmts stmt = new Stmts(); |
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475 stmt.add( "break; " ); |
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476 return parser.success( stmt ); |
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477 } |
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478 |
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479 int forCounter = 0; |
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480 |
674 | 481 private Stmts ForStmt() throws ParseException { |
645 | 482 parser.begin(); |
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483 int stackStart = symbolsSize(); |
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484 if( !Keyword("for") ) |
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485 return parser.failure(null); |
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486 List<String> names = RequiredNameList(); |
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487 if( !Keyword("in") ) |
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488 return parser.failure(null); |
674 | 489 Expr expr = RequiredExpr(In.NOTHING).single(); |
681 | 490 RequiredKeyword("do"); |
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491 |
654 | 492 String fnVar = "fn"+ ++forCounter; |
674 | 493 Expr fnExp = new Expr(null,false); |
677 | 494 fnExp.add( fnVar + ".call(luan)" ); |
674 | 495 Stmts stmt = new Stmts(); |
677 | 496 stmt.add( "" |
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497 +"LuanFunction "+fnVar+" = Luan.checkFunction(" |
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498 ); |
677 | 499 stmt.addAll( expr ); |
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500 stmt.add( "); " ); |
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501 stmt.add( "while(true) { " ); |
677 | 502 stmt.addAll( makeLocalSetStmt(names,fnExp) ); |
503 stmt.add( "if( " ); | |
504 stmt.addAll( nameVar(names.get(0)).exp() ); | |
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505 stmt.add( "==null ) break; " ); |
674 | 506 Stmts loop = RequiredLoopBlock(); |
681 | 507 RequiredKeyword("end"); |
677 | 508 stmt.addAll( loop ); |
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509 stmt.add( "} " ); |
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510 popSymbols( symbolsSize() - stackStart ); |
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511 return parser.success(stmt); |
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512 } |
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513 |
674 | 514 private Stmts DoStmt() throws ParseException { |
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515 parser.begin(); |
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516 if( !Keyword("do") ) |
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517 return parser.failure(null); |
674 | 518 Stmts stmt = RequiredBlock(); |
681 | 519 RequiredKeyword("end"); |
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520 return parser.success(stmt); |
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521 } |
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522 |
674 | 523 private Stmts LocalStmt() throws ParseException { |
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524 parser.begin(); |
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525 if( !Keyword("local") ) |
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526 return parser.failure(null); |
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527 List<String> names = NameList(); |
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528 if( names==null ) { |
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529 if( Keyword("function") ) |
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530 return parser.failure(null); // handled later |
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531 throw parser.exception("Invalid local statement"); |
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532 } |
674 | 533 Stmts stmt = new Stmts(); |
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534 if( parser.match( '=' ) ) { |
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535 Spaces(); |
674 | 536 Expr values = ExpStringList(In.NOTHING); |
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537 if( values==null ) |
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538 throw parser.exception("Expressions expected"); |
677 | 539 stmt.addAll( makeLocalSetStmt(names,values) ); |
671 | 540 } else { |
674 | 541 Expr value = new Expr(Val.SINGLE,false); |
677 | 542 value.add( "null" ); |
670
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543 for( String name : names ) { |
677 | 544 stmt.addAll( addSymbol(name,value) ); |
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545 } |
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546 } |
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547 return parser.success(stmt); |
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548 } |
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549 |
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550 private List<String> RequiredNameList() throws ParseException { |
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551 parser.begin(); |
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552 List<String> names = NameList(); |
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553 if( names==null ) |
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554 throw parser.exception("Name expected"); |
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555 return parser.success(names); |
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556 } |
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557 |
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558 private List<String> NameList() throws ParseException { |
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559 String name = Name(); |
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560 if( name==null ) |
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561 return null; |
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562 List<String> names = new ArrayList<String>(); |
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563 names.add(name); |
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564 while( (name=anotherName()) != null ) { |
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565 names.add(name); |
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566 } |
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567 return names; |
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568 } |
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569 |
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570 private String anotherName() throws ParseException { |
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571 parser.begin(); |
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572 if( !parser.match( ',' ) ) |
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573 return parser.failure(null); |
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574 Spaces(); |
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575 String name = Name(); |
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576 if( name==null ) |
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577 return parser.failure(null); |
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578 return parser.success(name); |
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579 } |
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580 |
674 | 581 private Stmts WhileStmt() throws ParseException { |
645 | 582 parser.begin(); |
679
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583 if( !Keyword("while") ) |
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584 return parser.failure(null); |
674 | 585 Expr cnd = RequiredExpr(In.NOTHING).single(); |
681 | 586 RequiredKeyword("do"); |
674 | 587 Stmts loop = RequiredLoopBlock(); |
681 | 588 RequiredKeyword("end"); |
674 | 589 Stmts stmt = new Stmts(); |
677 | 590 stmt.add( "while( Luan.checkBoolean(" ); |
591 stmt.addAll( cnd ); | |
679
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592 stmt.add( ") ) { " ); |
677 | 593 stmt.addAll( loop ); |
679
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594 stmt.add( "} " ); |
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595 return parser.success( stmt ); |
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596 } |
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597 |
674 | 598 private Stmts RepeatStmt() throws ParseException { |
645 | 599 parser.begin(); |
679
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600 if( !Keyword("repeat") ) |
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601 return parser.failure(null); |
674 | 602 Stmts loop =RequiredLoopBlock(); |
681 | 603 RequiredKeyword("until"); |
674 | 604 Expr cnd = RequiredExpr(In.NOTHING).single(); |
605 Stmts stmt = new Stmts(); | |
679
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606 stmt.add( "do { " ); |
677 | 607 stmt.addAll( loop ); |
608 stmt.add( "} while( !Luan.checkBoolean(" ); | |
609 stmt.addAll( cnd ); | |
679
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610 stmt.add( ") ); " ); |
666
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611 return parser.success( stmt ); |
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612 } |
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613 |
674 | 614 private Stmts RequiredLoopBlock() throws ParseException { |
104
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615 incLoops(); |
674 | 616 Stmts stmt = RequiredBlock(); |
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617 decLoops(); |
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618 return stmt; |
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619 } |
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620 |
674 | 621 private Stmts IfStmt() throws ParseException { |
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622 parser.begin(); |
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623 if( !Keyword("if") ) |
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624 return parser.failure(null); |
674 | 625 Stmts stmt = new Stmts(); |
626 Expr cnd; | |
627 Stmts block; | |
684 | 628 boolean hasReturn = true; |
674 | 629 cnd = RequiredExpr(In.NOTHING).single(); |
681 | 630 RequiredKeyword("then"); |
653
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631 block = RequiredBlock(); |
677 | 632 stmt.add( "if( Luan.checkBoolean(" ); |
633 stmt.addAll( cnd ); | |
679
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634 stmt.add( ") ) { " ); |
677 | 635 stmt.addAll( block ); |
684 | 636 if( !block.hasReturn ) |
637 hasReturn = false; | |
679
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638 while( Keyword("elseif") ) { |
674 | 639 cnd = RequiredExpr(In.NOTHING).single(); |
681 | 640 RequiredKeyword("then"); |
653
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641 block = RequiredBlock(); |
677 | 642 stmt.add( "} else if( Luan.checkBoolean(" ); |
643 stmt.addAll( cnd ); | |
679
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644 stmt.add( ") ) { " ); |
677 | 645 stmt.addAll( block ); |
684 | 646 if( !block.hasReturn ) |
647 hasReturn = false; | |
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648 } |
679
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649 if( Keyword("else") ) { |
653
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650 block = RequiredBlock(); |
679
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651 stmt.add( "} else { " ); |
677 | 652 stmt.addAll( block ); |
684 | 653 if( !block.hasReturn ) |
654 hasReturn = false; | |
655 } else { | |
656 hasReturn = false; | |
653
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657 } |
681 | 658 RequiredKeyword("end"); |
679
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659 stmt.add( "} " ); |
684 | 660 stmt.hasReturn = hasReturn; |
666
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661 return parser.success( stmt ); |
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662 } |
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663 |
674 | 664 private Stmts SetStmt() throws ParseException { |
104
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665 parser.begin(); |
660 | 666 List<Var> vars = new ArrayList<Var>(); |
667 Var v = SettableVar(); | |
668 if( v == null ) | |
104
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669 return parser.failure(null); |
660 | 670 vars.add(v); |
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671 while( parser.match( ',' ) ) { |
679
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672 Spaces(); |
660 | 673 v = SettableVar(); |
674 if( v == null ) | |
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675 return parser.failure(null); |
660 | 676 vars.add(v); |
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677 } |
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678 if( !parser.match( '=' ) ) |
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679 return parser.failure(null); |
679
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680 Spaces(); |
674 | 681 Expr values = ExpStringList(In.NOTHING); |
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682 if( values==null ) |
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683 // throw parser.exception("Expressions expected"); |
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684 return parser.failure(null); |
670
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685 return parser.success( makeSetStmt(vars,values) ); |
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686 } |
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687 |
674 | 688 private Stmts makeSetStmt(List<Var> vars,Expr values) throws ParseException { |
660 | 689 int n = vars.size(); |
690 if( n == 1 ) | |
670
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691 return vars.get(0).set(values); |
674 | 692 Stmts stmt = new Stmts(); |
693 String varName = values.valType==Val.ARRAY ? "a" : "t"; | |
677 | 694 stmt.add( varName + " = " ); |
695 stmt.addAll( values ); | |
679
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696 stmt.add( "; " ); |
674 | 697 Expr t = new Expr(values.valType,false); |
677 | 698 t.add( varName ); |
674 | 699 t = t.single(); |
677 | 700 stmt.addAll( vars.get(0).set(t) ); |
660 | 701 for( int i=1; i<n; i++ ) { |
677 | 702 t.clear(); |
703 t.add( "LuanImpl.pick(" + varName + ","+i+")" ); | |
704 stmt.addAll( vars.get(i).set(t) ); | |
660 | 705 } |
670
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|
706 return stmt; |
652
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707 } |
671 | 708 |
674 | 709 private Stmts makeLocalSetStmt(List<String> names,Expr values) throws ParseException { |
671 | 710 int n = names.size(); |
711 if( n == 1 ) | |
674 | 712 return addSymbol(names.get(0),values.single()); |
713 Stmts stmt = new Stmts(); | |
714 String varName = values.valType==Val.ARRAY ? "a" : "t"; | |
677 | 715 stmt.add( varName + " = " ); |
716 stmt.addAll( values ); | |
679
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717 stmt.add( "; " ); |
674 | 718 Expr t = new Expr(values.valType,false); |
677 | 719 t.add( varName ); |
674 | 720 t = t.single(); |
677 | 721 stmt.addAll( addSymbol(names.get(0),t) ); |
671 | 722 for( int i=1; i<n; i++ ) { |
677 | 723 t.clear(); |
724 t.add( "LuanImpl.pick(" + varName + ","+i+")" ); | |
725 stmt.addAll( addSymbol(names.get(i),t) ); | |
652
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726 } |
671 | 727 return stmt; |
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728 } |
671 | 729 |
674 | 730 private Stmts ExpressionsStmt() throws ParseException { |
104
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731 parser.begin(); |
674 | 732 Expr exp = ExprZ(In.NOTHING); |
651
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733 if( exp != null && exp.isStmt ) { |
674 | 734 Stmts stmt = new Stmts(); |
735 if( exp.valType==Val.SINGLE ) { | |
677 | 736 stmt.add( "LuanImpl.nop(" ); |
737 stmt.addAll( exp ); | |
738 stmt.add( ")" ); | |
666
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739 } else { |
677 | 740 stmt.addAll( exp ); |
666
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741 } |
679
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742 stmt.add( "; " ); |
666
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743 return parser.success( stmt ); |
651
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744 } |
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745 return parser.failure(null); |
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746 } |
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747 |
660 | 748 private Var SettableVar() throws ParseException { |
104
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749 int start = parser.begin(); |
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750 Var var = VarZ(In.NOTHING); |
660 | 751 if( var==null || !var.isSettable() ) |
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752 return parser.failure(null); |
660 | 753 return parser.success( var ); |
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754 } |
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755 |
674 | 756 private Expr RequiredExpr(In in) throws ParseException { |
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757 parser.begin(); |
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758 return parser.success(required(ExprZ(in),"Bad expression")); |
104
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759 } |
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760 |
674 | 761 private Expr ExprZ(In in) throws ParseException { |
449 | 762 return OrExpr(in); |
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763 } |
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parents:
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764 |
674 | 765 private Expr OrExpr(In in) throws ParseException { |
645 | 766 parser.begin(); |
674 | 767 Expr exp = AndExpr(in); |
104
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768 if( exp==null ) |
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769 return parser.failure(null); |
679
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|
770 while( Keyword("or") ) { |
674 | 771 exp = exp.single(); |
772 Expr exp2 = required(RelExpr(in)).single(); | |
773 Expr newExp = new Expr(Val.SINGLE,true); | |
677 | 774 newExp.add( "(LuanImpl.cnd(t = " ); |
775 newExp.addAll( exp ); | |
776 newExp.add( ") ? t : (" ); | |
777 newExp.addAll( exp2 ); | |
778 newExp.add( "))" ); | |
666
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779 exp = newExp; |
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780 } |
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781 return parser.success(exp); |
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782 } |
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783 |
674 | 784 private Expr AndExpr(In in) throws ParseException { |
645 | 785 parser.begin(); |
674 | 786 Expr exp = RelExpr(in); |
104
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787 if( exp==null ) |
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788 return parser.failure(null); |
679
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789 while( Keyword("and") ) { |
674 | 790 exp = exp.single(); |
791 Expr exp2 = required(RelExpr(in)).single(); | |
792 Expr newExp = new Expr(Val.SINGLE,true); | |
677 | 793 newExp.add( "(LuanImpl.cnd(t = " ); |
794 newExp.addAll( exp ); | |
795 newExp.add( ") ? (" ); | |
796 newExp.addAll( exp2 ); | |
797 newExp.add( ") : t)" ); | |
666
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798 exp = newExp; |
104
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799 } |
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800 return parser.success(exp); |
18
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801 } |
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802 |
674 | 803 private Expr RelExpr(In in) throws ParseException { |
645 | 804 parser.begin(); |
674 | 805 Expr exp = ConcatExpr(in); |
104
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806 if( exp==null ) |
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807 return parser.failure(null); |
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808 while(true) { |
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809 if( parser.match("==") ) { |
679
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810 Spaces(); |
674 | 811 exp = exp.single(); |
812 Expr exp2 = required(ConcatExpr(in)).single(); | |
813 Expr newExp = new Expr(Val.SINGLE,false); | |
677 | 814 newExp.add( "LuanImpl.eq(luan," ); |
815 newExp.addAll( exp ); | |
816 newExp.add( "," ); | |
817 newExp.addAll( exp2 ); | |
818 newExp.add( ")" ); | |
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819 exp = newExp; |
104
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820 } else if( parser.match("~=") ) { |
679
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821 Spaces(); |
674 | 822 exp = exp.single(); |
823 Expr exp2 = required(ConcatExpr(in)).single(); | |
824 Expr newExp = new Expr(Val.SINGLE,false); | |
677 | 825 newExp.add( "!LuanImpl.eq(luan," ); |
826 newExp.addAll( exp ); | |
827 newExp.add( "," ); | |
828 newExp.addAll( exp2 ); | |
829 newExp.add( ")" ); | |
666
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830 exp = newExp; |
104
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831 } else if( parser.match("<=") ) { |
679
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832 Spaces(); |
674 | 833 exp = exp.single(); |
834 Expr exp2 = required(ConcatExpr(in)).single(); | |
835 Expr newExp = new Expr(Val.SINGLE,false); | |
677 | 836 newExp.add( "LuanImpl.le(luan," ); |
837 newExp.addAll( exp ); | |
838 newExp.add( "," ); | |
839 newExp.addAll( exp2 ); | |
840 newExp.add( ")" ); | |
666
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841 exp = newExp; |
104
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842 } else if( parser.match(">=") ) { |
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843 Spaces(); |
674 | 844 exp = exp.single(); |
845 Expr exp2 = required(ConcatExpr(in)).single(); | |
846 Expr newExp = new Expr(Val.SINGLE,false); | |
677 | 847 newExp.add( "LuanImpl.le(luan," ); |
848 newExp.addAll( exp2 ); | |
849 newExp.add( "," ); | |
850 newExp.addAll( exp ); | |
851 newExp.add( ")" ); | |
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852 exp = newExp; |
104
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853 } else if( parser.match("<") ) { |
679
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854 Spaces(); |
674 | 855 exp = exp.single(); |
856 Expr exp2 = required(ConcatExpr(in)).single(); | |
857 Expr newExp = new Expr(Val.SINGLE,false); | |
677 | 858 newExp.add( "LuanImpl.lt(luan," ); |
859 newExp.addAll( exp ); | |
860 newExp.add( "," ); | |
861 newExp.addAll( exp2 ); | |
862 newExp.add( ")" ); | |
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863 exp = newExp; |
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864 } else if( parser.match(">") ) { |
679
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865 Spaces(); |
674 | 866 exp = exp.single(); |
867 Expr exp2 = required(ConcatExpr(in)).single(); | |
868 Expr newExp = new Expr(Val.SINGLE,false); | |
677 | 869 newExp.add( "LuanImpl.lt(luan," ); |
870 newExp.addAll( exp2 ); | |
871 newExp.add( "," ); | |
872 newExp.addAll( exp ); | |
873 newExp.add( ")" ); | |
666
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874 exp = newExp; |
104
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875 } else |
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876 break; |
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877 } |
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878 return parser.success(exp); |
42
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implement try-catch
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879 } |
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parents:
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|
880 |
674 | 881 private Expr ConcatExpr(In in) throws ParseException { |
645 | 882 parser.begin(); |
674 | 883 Expr exp = SumExpr(in); |
104
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884 if( exp==null ) |
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885 return parser.failure(null); |
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886 if( parser.match("..") ) { |
679
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887 Spaces(); |
674 | 888 exp = exp.single(); |
889 Expr exp2 = required(ConcatExpr(in)).single(); | |
890 Expr newExp = new Expr(Val.SINGLE,false); | |
677 | 891 newExp.add( "LuanImpl.concat(luan," ); |
892 newExp.addAll( exp ); | |
893 newExp.add( "," ); | |
894 newExp.addAll( exp2 ); | |
895 newExp.add( ")" ); | |
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896 exp = newExp; |
104
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897 } |
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898 return parser.success(exp); |
28
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899 } |
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|
900 |
674 | 901 private Expr SumExpr(In in) throws ParseException { |
645 | 902 parser.begin(); |
674 | 903 Expr exp = TermExpr(in); |
104
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904 if( exp==null ) |
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905 return parser.failure(null); |
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906 while(true) { |
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907 if( parser.match('+') ) { |
679
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|
908 Spaces(); |
674 | 909 exp = exp.single(); |
910 Expr exp2 = required(TermExpr(in)).single(); | |
911 Expr newExp = new Expr(Val.SINGLE,false); | |
677 | 912 newExp.add( "LuanImpl.add(luan," ); |
913 newExp.addAll( exp ); | |
914 newExp.add( "," ); | |
915 newExp.addAll( exp2 ); | |
916 newExp.add( ")" ); | |
666
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917 exp = newExp; |
104
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918 } else if( Minus() ) { |
679
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|
919 Spaces(); |
674 | 920 exp = exp.single(); |
921 Expr exp2 = required(TermExpr(in)).single(); | |
922 Expr newExp = new Expr(Val.SINGLE,false); | |
677 | 923 newExp.add( "LuanImpl.sub(luan," ); |
924 newExp.addAll( exp ); | |
925 newExp.add( "," ); | |
926 newExp.addAll( exp2 ); | |
927 newExp.add( ")" ); | |
666
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928 exp = newExp; |
104
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929 } else |
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930 break; |
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931 } |
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932 return parser.success(exp); |
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933 } |
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934 |
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935 private boolean Minus() { |
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936 parser.begin(); |
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937 return parser.match('-') && !parser.match('-') ? parser.success() : parser.failure(); |
12
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CmdLine can run files
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parents:
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938 } |
9cea1aea5eef
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|
939 |
674 | 940 private Expr TermExpr(In in) throws ParseException { |
645 | 941 parser.begin(); |
674 | 942 Expr exp = UnaryExpr(in); |
650
d658eab7bf4c
finish compiling operators
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|
943 if( exp==null ) |
104
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944 return parser.failure(null); |
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945 while(true) { |
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946 if( parser.match('*') ) { |
679
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947 Spaces(); |
674 | 948 exp = exp.single(); |
949 Expr exp2 = required(UnaryExpr(in)).single(); | |
950 Expr newExp = new Expr(Val.SINGLE,false); | |
677 | 951 newExp.add( "LuanImpl.mul(luan," ); |
952 newExp.addAll( exp ); | |
953 newExp.add( "," ); | |
954 newExp.addAll( exp2 ); | |
955 newExp.add( ")" ); | |
666
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956 exp = newExp; |
104
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957 } else if( parser.match('/') ) { |
679
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|
958 Spaces(); |
674 | 959 exp = exp.single(); |
960 Expr exp2 = required(UnaryExpr(in)).single(); | |
961 Expr newExp = new Expr(Val.SINGLE,false); | |
677 | 962 newExp.add( "LuanImpl.div(luan," ); |
963 newExp.addAll( exp ); | |
964 newExp.add( "," ); | |
965 newExp.addAll( exp2 ); | |
966 newExp.add( ")" ); | |
666
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967 exp = newExp; |
107
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968 } else if( Mod() ) { |
679
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|
969 Spaces(); |
674 | 970 exp = exp.single(); |
971 Expr exp2 = required(UnaryExpr(in)).single(); | |
972 Expr newExp = new Expr(Val.SINGLE,false); | |
677 | 973 newExp.add( "LuanImpl.mod(luan," ); |
974 newExp.addAll( exp ); | |
975 newExp.add( "," ); | |
976 newExp.addAll( exp2 ); | |
977 newExp.add( ")" ); | |
666
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978 exp = newExp; |
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979 } else |
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980 break; |
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981 } |
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982 return parser.success(exp); |
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983 } |
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984 |
107
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985 private boolean Mod() { |
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986 parser.begin(); |
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987 return parser.match('%') && !parser.match('>') ? parser.success() : parser.failure(); |
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988 } |
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989 |
674 | 990 private Expr UnaryExpr(In in) throws ParseException { |
645 | 991 parser.begin(); |
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992 if( parser.match('#') ) { |
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993 Spaces(); |
674 | 994 Expr exp = required(UnaryExpr(in)).single(); |
995 Expr newExp = new Expr(Val.SINGLE,false); | |
677 | 996 newExp.add( "LuanImpl.len(luan," ); |
997 newExp.addAll( exp ); | |
998 newExp.add( ")" ); | |
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999 return parser.success(newExp); |
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1000 } |
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1001 if( Minus() ) { |
679
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1002 Spaces(); |
674 | 1003 Expr exp = required(UnaryExpr(in)).single(); |
1004 Expr newExp = new Expr(Val.SINGLE,false); | |
677 | 1005 newExp.add( "LuanImpl.unm(luan," ); |
1006 newExp.addAll( exp ); | |
1007 newExp.add( ")" ); | |
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1008 return parser.success(newExp); |
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1009 } |
679
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1010 if( Keyword("not") ) { |
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1011 Spaces(); |
674 | 1012 Expr exp = required(UnaryExpr(in)).single(); |
1013 Expr newExp = new Expr(Val.SINGLE,false); | |
677 | 1014 newExp.add( "!Luan.checkBoolean(" ); |
1015 newExp.addAll( exp ); | |
1016 newExp.add( ")" ); | |
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1017 return parser.success(newExp); |
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1018 } |
674 | 1019 Expr exp = PowExpr(in); |
104
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1020 if( exp==null ) |
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1021 return parser.failure(null); |
650
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1022 return parser.success(exp); |
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1023 } |
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1024 |
674 | 1025 private Expr PowExpr(In in) throws ParseException { |
645 | 1026 parser.begin(); |
674 | 1027 Expr exp1 = SingleExpr(in); |
657 | 1028 if( exp1==null ) |
104
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1029 return parser.failure(null); |
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1030 if( parser.match('^') ) { |
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1031 Spaces(); |
674 | 1032 Expr exp2 = required(PowExpr(in)); |
1033 Expr newExp = new Expr(Val.SINGLE,false); | |
677 | 1034 newExp.add( "LuanImpl.pow(luan," ); |
1035 newExp.addAll( exp1.single() ); | |
1036 newExp.add( "," ); | |
1037 newExp.addAll( exp2.single() ); | |
1038 newExp.add( ")" ); | |
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1039 exp1 = newExp; |
104
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1040 } |
650
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1041 return parser.success(exp1); |
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1042 } |
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1043 |
674 | 1044 private Expr SingleExpr(In in) throws ParseException { |
104
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1045 parser.begin(); |
681 | 1046 Expr exp = FunctionExpr(); |
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1047 if( exp != null ) |
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1048 return parser.success(exp); |
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1049 exp = VarExp(in); |
104
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1050 if( exp != null ) |
670
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1051 return parser.success(exp); |
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1052 exp = VarArgs(); |
670
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1053 if( exp != null ) |
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1054 return parser.success(exp); |
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1055 return parser.failure(null); |
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1056 } |
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1057 |
681 | 1058 private Expr FunctionExpr() throws ParseException { |
679
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1059 if( !Keyword("function") ) |
104
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1060 return null; |
681 | 1061 return RequiredFunction(null); |
20
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1062 } |
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1063 |
681 | 1064 private Expr RequiredFunction(String name) throws ParseException { |
678 | 1065 parser.begin(); |
104
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1066 RequiredMatch('('); |
679
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1067 Spaces(); |
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1068 frame = new Frame(frame); |
674 | 1069 Stmts stmt = new Stmts(); |
679
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1070 List<String> names = NameList(); |
104
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1071 if( names != null ) { |
674 | 1072 Expr args = new Expr(Val.ARRAY,false); |
677 | 1073 args.add( "args" ); |
1074 stmt.addAll( makeLocalSetStmt(names,args) ); | |
104
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1075 if( parser.match(',') ) { |
679
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1076 Spaces(); |
104
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1077 if( !parser.match("...") ) |
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1078 throw parser.exception(); |
679
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1079 Spaces(); |
104
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1080 frame.isVarArg = true; |
679
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1081 stmt.add( "final Object[] varArgs = LuanImpl.varArgs(args," + names.size() + "); " ); |
104
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1082 } |
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1083 } else if( parser.match("...") ) { |
679
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1084 Spaces(); |
104
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1085 frame.isVarArg = true; |
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1086 stmt.add( "final Object[] varArgs = LuanImpl.varArgs(args,0); " ); |
104
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1087 } |
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1088 RequiredMatch(')'); |
679
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1089 Spaces(); |
674 | 1090 Stmts block = RequiredBlock(); |
677 | 1091 stmt.addAll( block ); |
670
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1092 stmt.hasReturn = block.hasReturn; |
681 | 1093 Expr fnDef = newFnExp(stmt,name); |
1094 RequiredKeyword("end"); | |
104
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1095 frame = frame.parent; |
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1096 return parser.success(fnDef); |
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1097 } |
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1098 |
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1099 private Expr VarArgs() throws ParseException { |
645 | 1100 parser.begin(); |
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1101 if( !frame.isVarArg || !parser.match("...") ) |
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1102 return parser.failure(null); |
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1103 Spaces(); |
674 | 1104 Expr exp = new Expr(Val.ARRAY,false); |
677 | 1105 exp.add("varArgs"); |
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1106 return parser.success(exp); |
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1107 } |
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1108 |
679
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1109 private Expr TableExpr() throws ParseException { |
645 | 1110 parser.begin(); |
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1111 if( !parser.match('{') ) |
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1112 return parser.failure(null); |
682 | 1113 Expr tblExp = new Expr(Val.SINGLE,false); |
1114 tblExp.add( "LuanImpl.table(" ); | |
1115 Expr lastExp = tblExp; | |
1116 List<Expr> builder = new ArrayList<Expr>(); | |
1117 /* | |
679
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1118 Spaces(); |
655 | 1119 Field(builder); |
604
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1120 while( FieldSep() ) { |
679
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1121 Spaces(); |
655 | 1122 Field(builder); |
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1123 } |
682 | 1124 */ |
1125 do { | |
1126 Spaces(); lastExp.addNewLines(); | |
1127 Expr exp = Field(); | |
1128 if( exp != null ) { | |
1129 builder.add(exp); | |
1130 lastExp = exp; | |
1131 Spaces(); lastExp.addNewLines(); | |
1132 } | |
1133 } while( FieldSep() ); | |
674 | 1134 Expr exp = TemplateExpressions(In.NOTHING); |
245
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1135 if( exp != null ) |
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1136 builder.add(exp); |
107
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1137 if( !parser.match('}') ) |
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|
1138 throw parser.exception("Expected table element or '}'"); |
682 | 1139 tblExp.addAll( expString(builder).array() ); |
1140 tblExp.add( ")" ); | |
679
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1141 Spaces(); |
682 | 1142 tblExp.addNewLines(); |
1143 return parser.success( tblExp ); | |
104
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1144 } |
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1145 |
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1146 private boolean FieldSep() throws ParseException { |
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1147 return parser.anyOf(",;") || EndOfLine(); |
14
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1148 } |
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1149 |
682 | 1150 private Expr Field() throws ParseException { |
104
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1151 parser.begin(); |
674 | 1152 Expr exp = SubExpr(In.NOTHING); |
104
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1153 if( exp==null ) |
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1154 exp = NameExpr(); |
104
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1155 if( exp!=null && parser.match('=') ) { |
679
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1156 Spaces(); |
674 | 1157 Expr val = RequiredExpr(In.NOTHING).single(); |
1158 Expr newExp = new Expr(Val.SINGLE,false); | |
677 | 1159 newExp.add( "new TableField(" ); |
1160 newExp.addAll( exp ); | |
1161 newExp.add( "," ); | |
1162 newExp.addAll( val ); | |
1163 newExp.add( ")" ); | |
682 | 1164 return parser.success(newExp); |
17
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1165 } |
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1166 parser.rollback(); |
674 | 1167 Expr exprs = ExprZ(In.NOTHING); |
154
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1168 if( exprs != null ) { |
682 | 1169 return parser.success(exprs); |
104
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1170 } |
682 | 1171 return parser.failure(null); |
7
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1172 } |
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1173 |
674 | 1174 private Expr VarExp(In in) throws ParseException { |
129
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1175 Var var = VarZ(in); |
656 | 1176 return var==null ? null : var.exp(); |
8
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1177 } |
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1178 |
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1179 private Var VarZ(In in) throws ParseException { |
645 | 1180 parser.begin(); |
1181 Var var = VarStart(in); | |
104
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1182 if( var==null ) |
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1183 return parser.failure(null); |
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1184 Var var2; |
656 | 1185 while( (var2=Var2(in,var.exp())) != null ) { |
104
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1186 var = var2; |
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1187 } |
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1188 return parser.success(var); |
7
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1189 } |
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1190 |
645 | 1191 private Var VarStart(In in) throws ParseException { |
206
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1192 if( parser.match('(') ) { |
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1193 Spaces(); |
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1194 Expr exp = RequiredExpr(in).single(); |
206
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1195 RequiredMatch(')'); |
679
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1196 Spaces(); |
206
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1197 return exprVar(exp); |
104
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1198 } |
679
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1199 String name = Name(); |
206
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1200 if( name != null ) |
645 | 1201 return nameVar(name); |
674 | 1202 Expr exp; |
679
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1203 exp = TableExpr(); |
206
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1204 if( exp != null ) |
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1205 return exprVar(exp); |
679
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1206 exp = Literal(); |
206
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1207 if( exp != null ) |
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1208 return exprVar(exp); |
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1209 return null; |
21
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1210 } |
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1211 |
674 | 1212 private Var Var2(In in,Expr exp1) throws ParseException { |
104
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1213 parser.begin(); |
674 | 1214 Expr exp2 = SubExpr(in); |
104
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1215 if( exp2 != null ) |
656 | 1216 return parser.success(indexVar(exp1,exp2)); |
104
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1217 if( parser.match('.') ) { |
679
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1218 Spaces(); |
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1219 exp2 = NameExpr(); |
104
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1220 if( exp2!=null ) |
656 | 1221 return parser.success(indexVar(exp1,exp2)); |
636 | 1222 return parser.failure(null); |
104
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1223 } |
674 | 1224 Expr fnCall = Args( in, exp1, new ArrayList<Expr>() ); |
206
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1225 if( fnCall != null ) |
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1226 return parser.success(exprVar(fnCall)); |
104
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1227 return parser.failure(null); |
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1228 } |
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1229 |
503 | 1230 private interface Var { |
674 | 1231 public Expr exp() throws ParseException; |
660 | 1232 // public Settable settable() throws ParseException; |
1233 public boolean isSettable(); | |
674 | 1234 public Stmts set(Expr val) throws ParseException; |
503 | 1235 } |
1236 | |
674 | 1237 private Expr env() { |
670
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1238 Sym sym = getSym("_ENV"); |
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1239 if( sym != null ) |
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1240 return sym.exp(); |
503 | 1241 return null; |
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1242 } |
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1243 |
645 | 1244 private Var nameVar(final String name) { |
104
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1245 return new Var() { |
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1246 |
674 | 1247 public Expr exp() throws ParseException { |
670
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1248 Sym sym = getSym(name); |
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1249 if( sym != null ) |
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1250 return sym.exp(); |
674 | 1251 Expr envExpr = env(); |
503 | 1252 if( envExpr != null ) |
670
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1253 return indexExpStr( envExpr, constExpStr(name) ); |
503 | 1254 parser.failure(null); |
1255 throw parser.exception("name '"+name+"' not defined"); | |
104
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1256 } |
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1257 |
660 | 1258 public boolean isSettable() { |
1259 return true; | |
1260 } | |
674 | 1261 |
1262 public Stmts set(Expr val) throws ParseException { | |
670
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1263 Sym sym = getSym(name); |
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1264 if( sym != null ) { |
674 | 1265 Stmts stmt = new Stmts(); |
677 | 1266 stmt.addAll( sym.exp() ); |
1267 stmt.add( " = " ); | |
1268 stmt.addAll( val.single() ); | |
679
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|
1269 stmt.add( "; " ); |
670
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1270 return stmt; |
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1271 } |
674 | 1272 Expr envExpr = env(); |
670
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1273 if( envExpr != null ) |
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1274 return indexVar( envExpr, constExpStr(name) ).set(val); |
687 | 1275 parser.failure(null); |
1276 throw parser.exception("name '"+name+"' not defined"); | |
660 | 1277 } |
104
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1278 }; |
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1279 } |
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1280 |
674 | 1281 private Var exprVar(final Expr expr) { |
104
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1282 return new Var() { |
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1283 |
674 | 1284 public Expr exp() { |
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1285 return expr; |
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1286 } |
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1287 |
660 | 1288 public boolean isSettable() { |
1289 return false; | |
1290 } | |
1291 | |
674 | 1292 public Stmts set(Expr val) { |
660 | 1293 throw new RuntimeException(); |
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1294 } |
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1295 }; |
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1296 } |
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1297 |
674 | 1298 private Var indexVar(final Expr table,final Expr key) { |
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1299 return new Var() { |
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1300 |
674 | 1301 public Expr exp() { |
656 | 1302 return indexExpStr( table, key ); |
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1303 } |
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1304 |
660 | 1305 public boolean isSettable() { |
1306 return true; | |
1307 } | |
674 | 1308 |
1309 public Stmts set(Expr val) { | |
1310 Stmts stmt = new Stmts(); | |
677 | 1311 stmt.add( "LuanImpl.put(luan," ); |
1312 stmt.addAll( table.single() ); | |
1313 stmt.add( "," ); | |
1314 stmt.addAll( key.single() ); | |
1315 stmt.add( "," ); | |
1316 stmt.addAll( val.single() ); | |
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1317 stmt.add( "); " ); |
666
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1318 return stmt; |
660 | 1319 } |
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1320 }; |
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1321 } |
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1322 |
674 | 1323 private Expr Args(In in,Expr fn,List<Expr> builder) throws ParseException { |
104
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1324 parser.begin(); |
129
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1325 return args(in,builder) |
656 | 1326 ? parser.success( callExpStr( fn, expString(builder) ) ) |
674 | 1327 : parser.failure((Expr)null); |
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1328 } |
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1329 |
674 | 1330 private boolean args(In in,List<Expr> builder) throws ParseException { |
645 | 1331 parser.begin(); |
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1332 if( parser.match('(') ) { |
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1333 Spaces(); |
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1334 ExpList(in,builder); // optional |
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1335 if( !parser.match(')') ) |
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1336 throw parser.exception("Expression or ')' expected"); |
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1337 Spaces(); |
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1338 return parser.success(); |
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1339 } |
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1340 Expr exp = TableExpr(); |
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1341 if( exp != null ) { |
655 | 1342 builder.add(exp); |
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1343 return parser.success(); |
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1344 } |
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1345 String s = StringLiteral(); |
107
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1346 if( s != null ) { |
657 | 1347 builder.add( constExpStr(s) ); |
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1348 return parser.success(); |
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1349 } |
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1350 return parser.failure(); |
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1351 } |
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1352 |
674 | 1353 private Expr ExpStringList(In in) throws ParseException { |
1354 List<Expr> builder = new ArrayList<Expr>(); | |
654 | 1355 return ExpList(in,builder) ? expString(builder) : null; |
652
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1356 } |
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1357 |
674 | 1358 private boolean ExpList(In in,List<Expr> builder) throws ParseException { |
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1359 parser.begin(); |
674 | 1360 Expr exp = TemplateExpressions(in); |
158
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1361 if( exp != null ) { |
654 | 1362 builder.add(exp); |
158
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1363 return parser.success(); |
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1364 } |
654 | 1365 exp = ExprZ(in); |
1366 if( exp==null ) | |
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1367 return parser.failure(); |
700 | 1368 exp.addNewLines(); |
654 | 1369 builder.add(exp); |
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1370 while( parser.match(',') ) { |
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1371 Spaces(); |
158
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1372 exp = TemplateExpressions(in); |
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1373 if( exp != null ) { |
654 | 1374 builder.add(exp); |
158
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1375 return parser.success(); |
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1376 } |
700 | 1377 exp = RequiredExpr(in); |
1378 exp.addNewLines(); | |
1379 builder.add(exp); | |
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1380 } |
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1381 return parser.success(); |
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1382 } |
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1383 |
674 | 1384 private Expr SubExpr(In in) throws ParseException { |
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1385 parser.begin(); |
209
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1386 if( !parser.match('[') || parser.test("[") || parser.test("=") ) |
104
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1387 return parser.failure(null); |
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1388 Spaces(); |
674 | 1389 Expr exp = RequiredExpr(In.NOTHING).single(); |
104
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1390 RequiredMatch(']'); |
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1391 Spaces(); |
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1392 return parser.success(exp); |
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1393 } |
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1394 |
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1395 private Expr NameExpr() throws ParseException { |
645 | 1396 parser.begin(); |
679
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1397 String name = Name(); |
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1398 if( name==null ) |
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1399 return parser.failure(null); |
656 | 1400 return parser.success(constExpStr(name)); |
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1401 } |
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1402 |
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1403 private String RequiredName() throws ParseException { |
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1404 parser.begin(); |
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1405 String name = Name(); |
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1406 if( name==null ) |
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1407 throw parser.exception("Name expected"); |
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1408 return parser.success(name); |
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1409 } |
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1410 |
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1411 private String Name() throws ParseException { |
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1412 int start = parser.begin(); |
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1413 if( !NameFirstChar() ) |
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1414 return parser.failure(null); |
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1415 while( NameChar() ); |
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1416 String match = parser.textFrom(start); |
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1417 if( keywords.contains(match) ) |
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1418 return parser.failure(null); |
679
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make java line numbers match
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|
1419 Spaces(); |
104
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|
1420 return parser.success(match); |
17
09d41f7490a8
add local variables
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diff
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|
1421 } |
09d41f7490a8
add local variables
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|
1422 |
104
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|
1423 private boolean NameChar() { |
754e6030c029
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|
1424 return NameFirstChar() || Digit(); |
754e6030c029
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|
1425 } |
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1426 |
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|
1427 private boolean NameFirstChar() { |
754e6030c029
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|
1428 return parser.inCharRange('a', 'z') || parser.inCharRange('A', 'Z') || parser.match('_'); |
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|
1429 } |
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|
1430 |
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|
1431 private void RequiredMatch(char c) throws ParseException { |
754e6030c029
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|
1432 if( !parser.match(c) ) |
754e6030c029
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|
1433 throw parser.exception("'"+c+"' expected"); |
9
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|
1434 } |
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|
1435 |
104
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|
1436 private void RequiredMatch(String s) throws ParseException { |
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|
1437 if( !parser.match(s) ) |
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|
1438 throw parser.exception("'"+s+"' expected"); |
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|
1439 } |
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|
1440 |
681 | 1441 private void RequiredKeyword(String keyword) throws ParseException { |
679
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|
1442 if( !Keyword(keyword) ) |
104
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|
1443 throw parser.exception("'"+keyword+"' expected"); |
9
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|
1444 } |
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|
1445 |
679
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|
1446 private boolean Keyword(String keyword) throws ParseException { |
104
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|
1447 parser.begin(); |
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|
1448 if( !parser.match(keyword) || NameChar() ) |
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|
1449 return parser.failure(); |
679
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|
1450 Spaces(); |
104
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|
1451 return parser.success(); |
12
9cea1aea5eef
CmdLine can run files
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|
1452 } |
9cea1aea5eef
CmdLine can run files
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|
1453 |
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|
1454 private static final Set<String> keywords = new HashSet<String>(Arrays.asList( |
12
9cea1aea5eef
CmdLine can run files
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|
1455 "and", |
9cea1aea5eef
CmdLine can run files
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|
1456 "break", |
9cea1aea5eef
CmdLine can run files
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|
1457 "do", |
9cea1aea5eef
CmdLine can run files
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|
1458 "else", |
9cea1aea5eef
CmdLine can run files
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|
1459 "elseif", |
9cea1aea5eef
CmdLine can run files
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|
1460 "end", |
9cea1aea5eef
CmdLine can run files
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changeset
|
1461 "false", |
9cea1aea5eef
CmdLine can run files
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|
1462 "for", |
9cea1aea5eef
CmdLine can run files
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|
1463 "function", |
9cea1aea5eef
CmdLine can run files
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|
1464 "goto", |
9cea1aea5eef
CmdLine can run files
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changeset
|
1465 "if", |
9cea1aea5eef
CmdLine can run files
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|
1466 "in", |
9cea1aea5eef
CmdLine can run files
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|
1467 "local", |
9cea1aea5eef
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changeset
|
1468 "nil", |
9cea1aea5eef
CmdLine can run files
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|
1469 "not", |
9cea1aea5eef
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changeset
|
1470 "or", |
9cea1aea5eef
CmdLine can run files
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|
1471 "repeat", |
9cea1aea5eef
CmdLine can run files
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changeset
|
1472 "return", |
9cea1aea5eef
CmdLine can run files
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changeset
|
1473 "then", |
9cea1aea5eef
CmdLine can run files
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changeset
|
1474 "true", |
9cea1aea5eef
CmdLine can run files
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diff
changeset
|
1475 "until", |
9cea1aea5eef
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diff
changeset
|
1476 "while" |
9cea1aea5eef
CmdLine can run files
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|
1477 )); |
9cea1aea5eef
CmdLine can run files
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|
1478 |
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|
1479 private Expr Literal() throws ParseException { |
645 | 1480 parser.begin(); |
679
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|
1481 if( NilLiteral() ) { |
674 | 1482 Expr exp = new Expr(Val.SINGLE,false); |
677 | 1483 exp.add( "null" ); |
666
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|
1484 return parser.success(exp); |
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|
1485 } |
679
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|
1486 Boolean b = BooleanLiteral(); |
666
2f449ccf54d2
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parents:
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diff
changeset
|
1487 if( b != null ) { |
674 | 1488 Expr exp = new Expr(Val.SINGLE,false); |
677 | 1489 exp.add( b.toString() ); |
666
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|
1490 return parser.success(exp); |
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|
1491 } |
679
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changeset
|
1492 Number n = NumberLiteral(); |
657 | 1493 if( n != null ) { |
1494 String s = n.toString(); | |
1495 if( n instanceof Long ) | |
1496 s += "L"; | |
674 | 1497 Expr exp = new Expr(Val.SINGLE,false); |
677 | 1498 exp.add( s ); |
666
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|
1499 return parser.success(exp); |
657 | 1500 } |
679
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|
1501 String s = StringLiteral(); |
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|
1502 if( s != null ) |
656 | 1503 return parser.success(constExpStr(s)); |
195
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|
1504 return parser.failure(null); |
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|
1505 } |
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|
1506 |
684 | 1507 private static int STR_LIM = 65000; |
1508 | |
674 | 1509 private Expr constExpStr(String s) { |
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|
1510 int n = 0; |
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changeset
|
1511 int from = 0; |
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|
1512 while( (from = s.indexOf('\n',from) + 1) != 0 ) { |
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|
1513 n++; |
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|
1514 } |
664 | 1515 s = s |
1516 .replace("\\","\\\\") | |
1517 .replace("\"","\\\"") | |
1518 .replace("\n","\\n") | |
1519 .replace("\r","\\r") | |
1520 .replace("\t","\\t") | |
1521 .replace("\b","\\b") | |
1522 ; | |
684 | 1523 if( s.length() > STR_LIM ) { |
1524 int len = s.length(); | |
1525 StringBuilder sb = new StringBuilder(); | |
1526 sb.append( "LuanImpl.strconcat(" ); | |
1527 int start = 0; | |
1528 while(true) { | |
1529 int end = start + STR_LIM; | |
1530 if( end >= len ) | |
1531 break; | |
1532 sb.append( "\"" ).append( s.substring(start,end) ).append( "\"," ); | |
1533 start = end; | |
1534 } | |
1535 sb.append( "\"" ).append( s.substring(start) ).append( "\")" ); | |
1536 s = sb.toString(); | |
1537 } else | |
1538 s = "\"" + s + "\""; | |
679
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|
1539 while( n-- > 0 ) |
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|
1540 s += "\n"; |
674 | 1541 Expr exp = new Expr(Val.SINGLE,false); |
679
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|
1542 exp.add( s ); |
666
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|
1543 return exp; |
664 | 1544 } |
1545 | |
679
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|
1546 private boolean NilLiteral() throws ParseException { |
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changeset
|
1547 return Keyword("nil"); |
65
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multi-line statements
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|
1548 } |
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|
1549 |
679
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|
1550 private Boolean BooleanLiteral() throws ParseException { |
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|
1551 if( Keyword("true") ) |
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|
1552 return true; |
679
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|
1553 if( Keyword("false") ) |
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|
1554 return false; |
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1555 return null; |
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|
1556 } |
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|
1557 |
679
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1558 private Number NumberLiteral() throws ParseException { |
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1559 parser.begin(); |
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1560 Number n; |
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1561 if( parser.matchIgnoreCase("0x") ) { |
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1562 n = HexNumber(); |
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|
1563 } else { |
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1564 n = DecNumber(); |
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|
1565 } |
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1566 if( n==null || NameChar() ) |
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|
1567 return parser.failure(null); |
679
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|
1568 Spaces(); |
104
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1569 return parser.success(n); |
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|
1570 } |
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|
1571 |
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|
1572 private Number DecNumber() { |
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1573 int start = parser.begin(); |
535
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1574 boolean isInt = true; |
104
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1575 if( Int() ) { |
535
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1576 if( parser.match('.') ) { |
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1577 isInt = false; |
104
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1578 Int(); // optional |
535
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1579 } |
104
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|
1580 } else if( parser.match('.') && Int() ) { |
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1581 // ok |
535
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1582 isInt = false; |
104
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|
1583 } else |
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1584 return parser.failure(null); |
535
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1585 if( Exponent() ) // optional |
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1586 isInt = false; |
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|
1587 String s = parser.textFrom(start); |
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|
1588 if( isInt ) { |
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|
1589 try { |
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1590 return parser.success(Integer.valueOf(s)); |
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|
1591 } catch(NumberFormatException e) {} |
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|
1592 try { |
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|
1593 return parser.success(Long.valueOf(s)); |
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1594 } catch(NumberFormatException e) {} |
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|
1595 } |
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|
1596 return parser.success(Double.valueOf(s)); |
5
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|
1597 } |
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1598 |
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|
1599 private boolean Exponent() { |
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1600 parser.begin(); |
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1601 if( !parser.matchIgnoreCase("e") ) |
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1602 return parser.failure(); |
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1603 parser.anyOf("+-"); // optional |
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1604 if( !Int() ) |
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1605 return parser.failure(); |
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1606 return parser.success(); |
5
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1607 } |
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1608 |
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1609 private boolean Int() { |
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1610 if( !Digit() ) |
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1611 return false; |
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1612 while( Digit() ); |
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1613 return true; |
5
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1614 } |
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1615 |
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1616 private boolean Digit() { |
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1617 return parser.inCharRange('0', '9'); |
16
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|
1618 } |
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1619 |
104
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|
1620 private Number HexNumber() { |
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|
1621 int start = parser.begin(); |
535
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|
1622 long nLong = 0; |
104
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1623 double n; |
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|
1624 if( HexInt() ) { |
535
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|
1625 nLong = Long.parseLong(parser.textFrom(start),16); |
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|
1626 n = (double)nLong; |
104
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|
1627 if( parser.match('.') ) { |
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|
1628 start = parser.currentIndex(); |
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|
1629 if( HexInt() ) { |
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1630 String dec = parser.textFrom(start); |
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1631 n += (double)Long.parseLong(dec,16) / Math.pow(16,dec.length()); |
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1632 } |
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1633 } |
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|
1634 } else if( parser.match('.') && HexInt() ) { |
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1635 String dec = parser.textFrom(start+1); |
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1636 n = (double)Long.parseLong(dec,16) / Math.pow(16,dec.length()); |
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|
1637 } else { |
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|
1638 return parser.failure(null); |
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1639 } |
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|
1640 if( parser.matchIgnoreCase("p") ) { |
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|
1641 parser.anyOf("+-"); // optional |
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1642 start = parser.currentIndex(); |
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1643 if( !HexInt() ) |
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1644 return parser.failure(null); |
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|
1645 n *= Math.pow(2,(double)Long.parseLong(parser.textFrom(start))); |
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1646 } |
535
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|
1647 if( nLong == n ) { |
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|
1648 int nInt = (int)nLong; |
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|
1649 if( nInt == nLong ) |
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|
1650 return parser.success(Integer.valueOf(nInt)); |
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|
1651 return parser.success(Long.valueOf(nLong)); |
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|
1652 } |
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1653 return parser.success(Double.valueOf(n)); |
16
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1654 } |
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1655 |
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1656 private boolean HexInt() { |
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1657 if( !HexDigit() ) |
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1658 return false; |
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1659 while( HexDigit() ); |
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1660 return true; |
16
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1661 } |
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finish number literals;
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1662 |
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1663 |
104
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1664 private boolean HexDigit() { |
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1665 return Digit() || parser.anyOf("abcdefABCDEF"); |
6
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1666 } |
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1667 |
679
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1668 private String StringLiteral() throws ParseException { |
104
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1669 String s; |
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1670 if( (s=QuotedString('"'))==null |
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1671 && (s=QuotedString('\''))==null |
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1672 && (s=LongString())==null |
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1673 ) |
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1674 return null; |
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1675 Spaces(); |
104
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1676 return s; |
16
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1677 } |
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1678 |
104
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1679 private String LongString() throws ParseException { |
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1680 parser.begin(); |
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1681 if( !parser.match('[') ) |
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1682 return parser.failure(null); |
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1683 int start = parser.currentIndex(); |
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1684 while( parser.match('=') ); |
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1685 int nEquals = parser.currentIndex() - start; |
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1686 if( !parser.match('[') ) |
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1687 return parser.failure(null); |
684 | 1688 MatchEndOfLine(); |
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1689 start = parser.currentIndex(); |
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1690 while( !LongBracketsEnd(nEquals) ) { |
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1691 if( !parser.anyChar() ) |
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1692 throw parser.exception("Unclosed long string"); |
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1693 } |
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1694 String s = parser.text.substring( start, parser.currentIndex() - nEquals - 2 ); |
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1695 return parser.success(s); |
6
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1696 } |
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1697 |
104
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|
1698 private String QuotedString(char quote) throws ParseException { |
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1699 parser.begin(); |
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1700 if( !parser.match(quote) ) |
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1701 return parser.failure(null); |
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1702 StringBuilder buf = new StringBuilder(); |
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1703 while( !parser.match(quote) ) { |
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1704 Character c = EscSeq(); |
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1705 if( c != null ) { |
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1706 buf.append(c); |
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1707 } else { |
271
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1708 if( parser.test('\r') || parser.test('\n') || !parser.anyChar() ) |
104
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1709 throw parser.exception("Unclosed string"); |
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1710 buf.append(parser.lastChar()); |
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1711 } |
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1712 } |
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1713 return parser.success(buf.toString()); |
6
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1714 } |
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1715 |
104
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|
1716 private Character EscSeq() { |
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1717 parser.begin(); |
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1718 if( !parser.match('\\') ) |
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1719 return parser.failure(null); |
155
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1720 if( parser.match('a') ) return parser.success('\u0007'); |
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1721 if( parser.match('b') ) return parser.success('\b'); |
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1722 if( parser.match('f') ) return parser.success('\f'); |
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1723 if( parser.match('n') ) return parser.success('\n'); |
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1724 if( parser.match('r') ) return parser.success('\r'); |
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1725 if( parser.match('t') ) return parser.success('\t'); |
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1726 if( parser.match('v') ) return parser.success('\u000b'); |
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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 if( parser.match('\'') ) return parser.success('\''); |
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1730 int start = parser.currentIndex(); |
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1731 if( parser.match('x') && HexDigit() && HexDigit() ) |
155
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1732 return parser.success((char)Integer.parseInt(parser.textFrom(start+1),16)); |
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1733 if( Digit() ) { |
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1734 if( Digit() ) Digit(); // optional |
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1735 return parser.success((char)Integer.parseInt(parser.textFrom(start))); |
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1736 } |
684 | 1737 if( MatchEndOfLine() ) { |
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1738 return parser.success('\n'); |
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|
1739 } |
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1740 return parser.failure(null); |
14
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1741 } |
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1742 |
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|
1743 private void Spaces() throws ParseException { |
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|
1744 while( parser.anyOf(" \t") || Comment() || ContinueOnNextLine() ); |
14
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1745 } |
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1746 |
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1747 private boolean ContinueOnNextLine() { |
754e6030c029
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1748 parser.begin(); |
700 | 1749 if( parser.match('\\') && EndOfLine() ) { |
1750 parser.upSb(); | |
1751 return parser.success(); | |
1752 } else | |
1753 return parser.failure(); | |
7
bca8fc5d928b
work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
6
diff
changeset
|
1754 } |
bca8fc5d928b
work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
6
diff
changeset
|
1755 |
247
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parents:
245
diff
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|
1756 private boolean Comment() throws ParseException { |
b5995d77878a
fix parsing of comments
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parents:
245
diff
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|
1757 if( LongComment() ) |
b5995d77878a
fix parsing of comments
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parents:
245
diff
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|
1758 return true; |
104
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1759 if( parser.match("--") ) { |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1760 while( parser.noneOf("\r\n") ); |
247
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parents:
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diff
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|
1761 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
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|
1762 } |
247
b5995d77878a
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parents:
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diff
changeset
|
1763 return false; |
18
3971113699b8
add NumericForStmt
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
17
diff
changeset
|
1764 } |
3971113699b8
add NumericForStmt
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
17
diff
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|
1765 |
247
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parents:
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|
1766 private boolean LongComment() throws ParseException { |
104
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parents:
99
diff
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|
1767 parser.begin(); |
754e6030c029
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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diff
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|
1768 if( !parser.match("--[") ) |
754e6030c029
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parents:
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diff
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|
1769 return parser.failure(); |
754e6030c029
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parents:
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|
1770 int start = parser.currentIndex(); |
754e6030c029
remove parboiled and rewrite parser;
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parents:
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diff
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|
1771 while( parser.match('=') ); |
754e6030c029
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parents:
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|
1772 int nEquals = parser.currentIndex() - start; |
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parents:
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|
1773 if( !parser.match('[') ) |
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|
1774 return parser.failure(); |
754e6030c029
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parents:
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diff
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|
1775 while( !LongBracketsEnd(nEquals) ) { |
679
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diff
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|
1776 if( !(EndOfLine() || parser.anyChar()) ) |
104
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diff
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|
1777 throw parser.exception("Unclosed comment"); |
754e6030c029
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|
1778 } |
679
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|
1779 parser.upSb(); |
104
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|
1780 return parser.success(); |
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|
1781 } |
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|
1782 |
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|
1783 private boolean LongBracketsEnd(int nEquals) { |
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|
1784 parser.begin(); |
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|
1785 if( !parser.match(']') ) |
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|
1786 return parser.failure(); |
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|
1787 while( nEquals-- > 0 ) { |
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1788 if( !parser.match('=') ) |
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|
1789 return parser.failure(); |
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|
1790 } |
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|
1791 if( !parser.match(']') ) |
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1792 return parser.failure(); |
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|
1793 return parser.success(); |
12
9cea1aea5eef
CmdLine can run files
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|
1794 } |
9cea1aea5eef
CmdLine can run files
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|
1795 |
648
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1796 |
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1797 |
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|
1798 private class ParseList extends ArrayList { |
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1799 |
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1800 void addNewLines() { |
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1801 if( parser.sb().length() > 0 ) { |
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|
1802 add( parser.sb().toString() ); |
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1803 parser.sb().setLength(0); |
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|
1804 /* |
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1805 if( parser.sourceName.equals("stdin") ) { |
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|
1806 StringWriter sw = new StringWriter(); |
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|
1807 new Throwable().printStackTrace(new PrintWriter(sw,true)); |
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|
1808 // add(sw.toString()); |
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|
1809 } |
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1810 */ |
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1811 } |
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1812 } |
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1813 |
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|
1814 ParseList() { |
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|
1815 addNewLines(); |
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|
1816 } |
677 | 1817 |
1818 @Override public boolean add(Object obj) { | |
1819 if( obj instanceof List ) throw new RuntimeException(); | |
1820 return super.add(obj); | |
1821 } | |
1822 | |
1823 @Override public void add(int index,Object obj) { | |
1824 if( obj instanceof List ) throw new RuntimeException(); | |
1825 super.add(index,obj); | |
1826 } | |
1827 | |
1828 @Override public String toString() { | |
1829 StringBuilder sb = new StringBuilder(); | |
1830 for( Object o : this ) { | |
1831 sb.append( o.toString() ); | |
1832 } | |
1833 return sb.toString(); | |
1834 } | |
1835 } | |
1836 | |
648
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1837 |
676 | 1838 private static AtomicInteger classCounter = new AtomicInteger(); |
648
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1839 |
674 | 1840 private enum Val { SINGLE, ARRAY } |
1841 | |
679
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1842 private class Expr extends ParseList { |
674 | 1843 final Val valType; |
649
37f0cf43f191
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diff
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|
1844 final boolean isStmt; |
674 | 1845 |
1846 Expr(Val valType,boolean isStmt) { | |
1847 this.valType = valType; | |
649
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|
1848 this.isStmt = isStmt; |
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|
1849 } |
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|
1850 |
674 | 1851 Expr single() { |
1852 if( valType==Val.SINGLE ) | |
666
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|
1853 return this; |
674 | 1854 Expr exp = new Expr(Val.SINGLE,isStmt); |
677 | 1855 exp.add( valType==Val.ARRAY ? "LuanImpl.first(" : "Luan.first(" ); |
1856 exp.addAll( this ); | |
1857 exp.add( ")" ); | |
666
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1858 return exp; |
649
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|
1859 } |
674 | 1860 |
1861 Expr array() { | |
1862 if( valType==Val.ARRAY ) | |
1863 return this; | |
1864 Expr exp = new Expr(Val.ARRAY,isStmt); | |
1865 if( valType==Val.SINGLE ) { | |
677 | 1866 exp.add( "new Object[]{" ); |
1867 exp.addAll( this ); | |
1868 exp.add( "}" ); | |
674 | 1869 } else { |
677 | 1870 exp.add( "Luan.array(" ); |
1871 exp.addAll( this ); | |
1872 exp.add( ")" ); | |
674 | 1873 } |
1874 return exp; | |
1875 } | |
1876 | |
650
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1877 } |
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1878 |
674 | 1879 private Expr expString(List<Expr> list) { |
1880 Expr exp = new Expr(Val.ARRAY,false); | |
652
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1881 switch(list.size()) { |
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1882 case 0: |
677 | 1883 exp.add("LuanFunction.NOTHING"); |
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1884 return exp; |
652
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|
1885 case 1: |
653
538b0ae08faa
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1886 return list.get(0); |
652
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|
1887 default: |
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1888 int lastI = list.size() - 1; |
677 | 1889 exp.add( "new Object[]{" ); |
652
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|
1890 for( int i=0; i<lastI; i++ ) { |
677 | 1891 exp.addAll( list.get(i).single() ); |
1892 exp.add( "," ); | |
652
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1893 } |
674 | 1894 Expr last = list.get(lastI); |
1895 if( last.valType==Val.SINGLE ) { | |
677 | 1896 exp.addAll( last ); |
1897 exp.add( "}" ); | |
652
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1898 } else { |
677 | 1899 exp.add( "}" ); |
1900 exp.add( 0, "LuanImpl.concatArgs(" ); | |
1901 exp.add( "," ); | |
1902 exp.addAll( last ); | |
1903 exp.add( ")" ); | |
652
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|
1904 } |
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1905 return exp; |
652
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|
1906 } |
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|
1907 } |
657 | 1908 |
679
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|
1909 private class Stmts extends ParseList { |
663
b438a47196bc
finish compiling function blocks
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changeset
|
1910 boolean hasReturn = false; |
651
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|
1911 } |
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1912 |
677 | 1913 private Class toFnClass(Stmts stmts,List<UpSym> upValueSymbols) { |
676 | 1914 String className = "EXP" + classCounter.incrementAndGet(); |
678 | 1915 String classCode = toFnString(stmts,upValueSymbols,className); |
1916 try { | |
1917 //System.out.println(parser.sourceName); | |
1918 //System.out.println(classCode); | |
1919 return LuanJavaCompiler.compile("luan.impl."+className,parser.sourceName,classCode); | |
1920 } catch(ClassNotFoundException e) { | |
1921 throw new RuntimeException(e); | |
1922 } | |
1923 } | |
1924 | |
1925 private String toFnString(Stmts stmts,List<UpSym> upValueSymbols) { | |
1926 String className = "EXP" + classCounter.incrementAndGet(); | |
1927 return toFnString(stmts,upValueSymbols,className); | |
1928 } | |
1929 | |
1930 private String toFnString(Stmts stmts,List<UpSym> upValueSymbols,String className) { | |
1931 if( !stmts.hasReturn ) | |
679
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|
1932 stmts.add( "\nreturn LuanFunction.NOTHING;" ); |
678 | 1933 return "" |
679
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|
1934 +"package luan.impl; " |
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1935 +"import luan.Luan; " |
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1936 +"import luan.LuanFunction; " |
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1937 +"import luan.LuanState; " |
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1938 +"import luan.LuanJava; " |
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1939 +"import luan.LuanException; " |
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1940 +"import luan.modules.PackageLuan; " |
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1941 |
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1942 +"public class " + className +" extends Closure { " |
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1943 +"public "+className+"(LuanJava java) throws LuanException { " |
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1944 +"super("+upValueSymbols.size()+",java); " |
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1945 + init(upValueSymbols) |
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1946 +"} " |
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1947 |
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1948 +"@Override public Object doCall(LuanState luan,Object[] args) throws LuanException { " |
688 | 1949 +"final Pointer[] parentUpValues = upValues; " |
679
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1950 +"Object t; " |
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1951 +"Object[] a; " |
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1952 + stmts |
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1953 +"\n} " |
663
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1954 +"}\n" |
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1955 ; |
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1956 } |
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1957 |
681 | 1958 private Expr toFnExp(Stmts stmt,List<UpSym> upValueSymbols,String name) { |
679
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1959 stmt.addNewLines(); |
678 | 1960 if( !stmt.hasReturn ) |
679
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1961 stmt.add( "return LuanFunction.NOTHING; " ); |
674 | 1962 Expr exp = new Expr(Val.SINGLE,false); |
677 | 1963 exp.add( "" |
679
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1964 +"new Closure("+upValueSymbols.size()+",java) { " |
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1965 +"{ " |
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1966 + init(upValueSymbols) |
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1967 +"} " |
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1968 +"@Override public Object doCall(LuanState luan,Object[] args) throws LuanException { " |
681 | 1969 ); |
1970 if( name != null ) { | |
1971 exp.add( "" | |
1972 +"return _" + name + "(luan,args); " | |
1973 +"} " | |
1974 +"private Object _" + name + "(LuanState luan,Object[] args) throws LuanException { " | |
1975 ); | |
1976 } | |
1977 exp.add( "" | |
688 | 1978 +"final Pointer[] parentUpValues = upValues; " |
679
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1979 +"Object t; " |
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1980 +"Object[] a; " |
666
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1981 ); |
677 | 1982 exp.addAll( stmt ); |
1983 exp.add( "" | |
679
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1984 +"} " |
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1985 +"} " |
666
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1986 ); |
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1987 return exp; |
665 | 1988 } |
1989 | |
670
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1990 private static String init(List<UpSym> upValueSymbols) { |
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1991 StringBuilder sb = new StringBuilder(); |
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1992 for( UpSym upSym : upValueSymbols ) { |
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1993 sb.append( upSym.init() ); |
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1994 } |
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1995 return sb.toString(); |
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1996 } |
663
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1997 |
5
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start LuaParser
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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1998 } |