Mercurial Hosting > luan
annotate src/luan/impl/LuanParser.java @ 1093:a656fa45e315
fix multiline statements
author | Franklin Schmidt <fschmidt@gmail.com> |
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date | Sun, 08 Jan 2017 21:13:45 -0700 |
parents | 20d5968e65cc |
children | 5dc601c4ed6d |
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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," ); |
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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).single() ); |
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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 { |
714 | 406 Expr exp = new Expr(Val.SINGLE,false); |
104
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407 int i = parser.currentIndex(); |
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408 do { |
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409 if( parser.match( "%>" ) ) |
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410 throw parser.exception("'%>' unexpected"); |
714 | 411 if( !(EndOfLine() || parser.anyChar()) ) |
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412 throw parser.exception("Unclosed template expression"); |
104
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413 } while( !parser.test( "<%" ) ); |
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414 String match = parser.textFrom(i); |
714 | 415 String rtns = parser.sb().toString(); |
416 parser.sb().setLength(0); | |
417 exp.addAll( constExpStr(match) ); | |
418 if( rtns.length() > 0 ) | |
419 exp.add(rtns); | |
420 builder.add(exp); | |
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421 } |
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422 } |
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423 } |
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424 |
674 | 425 private Stmts ReturnStmt() throws ParseException { |
645 | 426 parser.begin(); |
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427 if( !Keyword("return") ) |
104
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428 return parser.failure(null); |
674 | 429 Expr exprs = ExpStringList(In.NOTHING); |
430 Stmts stmt = new Stmts(); | |
677 | 431 stmt.add( "return " ); |
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432 if( exprs != null ) |
677 | 433 stmt.addAll( exprs ); |
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434 else |
677 | 435 stmt.add( "LuanFunction.NOTHING" ); |
679
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436 stmt.add( "; " ); |
684 | 437 stmt.hasReturn = true; |
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438 return parser.success( stmt ); |
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439 } |
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440 |
674 | 441 private Stmts FunctionStmt() throws ParseException { |
104
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442 parser.begin(); |
679
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443 if( !Keyword("function") ) |
104
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444 return parser.failure(null); |
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445 |
645 | 446 parser.currentIndex(); |
681 | 447 String name = RequiredName(); |
448 Var var = nameVar(name); | |
104
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449 while( parser.match( '.' ) ) { |
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450 Spaces(); |
681 | 451 // Expr exp = NameExpr(); |
452 name = Name(); | |
453 if( name==null ) | |
636 | 454 return parser.failure(null); |
681 | 455 var = indexVar( var.exp(), constExpStr(name) ); |
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456 } |
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457 |
681 | 458 Expr fnDef = RequiredFunction(name); |
665 | 459 return parser.success( var.set(fnDef) ); |
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460 } |
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461 |
674 | 462 private Stmts LocalFunctionStmt() throws ParseException { |
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463 parser.begin(); |
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464 if( !(Keyword("local") && Keyword("function")) ) |
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465 return parser.failure(null); |
674 | 466 Stmts stmt = new Stmts(); |
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467 String name = RequiredName(); |
677 | 468 stmt.addAll( addSymbol(name,null) ); |
681 | 469 Expr fnDef = RequiredFunction(name); |
677 | 470 stmt.addAll( nameVar(name).set(fnDef) ); |
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471 return parser.success( stmt ); |
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472 } |
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473 |
674 | 474 private Stmts BreakStmt() throws ParseException { |
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475 parser.begin(); |
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476 if( !Keyword("break") ) |
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477 return parser.failure(null); |
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478 if( frame.loops <= 0 ) |
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479 throw parser.exception("'break' outside of loop"); |
674 | 480 Stmts stmt = new Stmts(); |
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481 stmt.add( "break; " ); |
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482 return parser.success( stmt ); |
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483 } |
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484 |
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485 int forCounter = 0; |
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486 |
674 | 487 private Stmts ForStmt() throws ParseException { |
645 | 488 parser.begin(); |
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489 int stackStart = symbolsSize(); |
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490 if( !Keyword("for") ) |
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491 return parser.failure(null); |
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492 List<String> names = RequiredNameList(); |
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493 if( !Keyword("in") ) |
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494 return parser.failure(null); |
674 | 495 Expr expr = RequiredExpr(In.NOTHING).single(); |
681 | 496 RequiredKeyword("do"); |
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497 |
654 | 498 String fnVar = "fn"+ ++forCounter; |
674 | 499 Expr fnExp = new Expr(null,false); |
677 | 500 fnExp.add( fnVar + ".call(luan)" ); |
674 | 501 Stmts stmt = new Stmts(); |
677 | 502 stmt.add( "" |
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503 +"LuanFunction "+fnVar+" = Luan.checkFunction(" |
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504 ); |
677 | 505 stmt.addAll( expr ); |
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506 stmt.add( "); " ); |
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507 stmt.add( "while(true) { " ); |
677 | 508 stmt.addAll( makeLocalSetStmt(names,fnExp) ); |
509 stmt.add( "if( " ); | |
510 stmt.addAll( nameVar(names.get(0)).exp() ); | |
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511 stmt.add( "==null ) break; " ); |
674 | 512 Stmts loop = RequiredLoopBlock(); |
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513 RequiredEnd("end_for"); |
677 | 514 stmt.addAll( loop ); |
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515 stmt.add( "} " ); |
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516 popSymbols( symbolsSize() - stackStart ); |
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517 return parser.success(stmt); |
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518 } |
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519 |
674 | 520 private Stmts DoStmt() throws ParseException { |
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521 parser.begin(); |
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522 if( !Keyword("do") ) |
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523 return parser.failure(null); |
674 | 524 Stmts stmt = RequiredBlock(); |
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525 RequiredEnd("end_do"); |
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526 return parser.success(stmt); |
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527 } |
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528 |
674 | 529 private Stmts LocalStmt() throws ParseException { |
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530 parser.begin(); |
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531 if( !Keyword("local") ) |
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532 return parser.failure(null); |
679
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533 List<String> names = NameList(); |
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534 if( names==null ) { |
679
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535 if( Keyword("function") ) |
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536 return parser.failure(null); // handled later |
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537 throw parser.exception("Invalid local statement"); |
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538 } |
674 | 539 Stmts stmt = new Stmts(); |
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540 if( parser.match( '=' ) ) { |
679
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541 Spaces(); |
674 | 542 Expr values = ExpStringList(In.NOTHING); |
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543 if( values==null ) |
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544 throw parser.exception("Expressions expected"); |
677 | 545 stmt.addAll( makeLocalSetStmt(names,values) ); |
671 | 546 } else { |
674 | 547 Expr value = new Expr(Val.SINGLE,false); |
677 | 548 value.add( "null" ); |
670
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549 for( String name : names ) { |
677 | 550 stmt.addAll( addSymbol(name,value) ); |
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551 } |
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552 } |
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553 return parser.success(stmt); |
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554 } |
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555 |
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556 private List<String> RequiredNameList() throws ParseException { |
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557 parser.begin(); |
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558 List<String> names = NameList(); |
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559 if( names==null ) |
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560 throw parser.exception("Name expected"); |
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561 return parser.success(names); |
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562 } |
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563 |
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564 private List<String> NameList() throws ParseException { |
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565 String name = Name(); |
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566 if( name==null ) |
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567 return null; |
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568 List<String> names = new ArrayList<String>(); |
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569 names.add(name); |
679
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570 while( (name=anotherName()) != null ) { |
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571 names.add(name); |
104
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572 } |
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573 return names; |
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574 } |
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575 |
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576 private String anotherName() throws ParseException { |
139
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577 parser.begin(); |
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578 if( !parser.match( ',' ) ) |
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579 return parser.failure(null); |
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580 Spaces(); |
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581 String name = Name(); |
139
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582 if( name==null ) |
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583 return parser.failure(null); |
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584 return parser.success(name); |
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585 } |
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586 |
674 | 587 private Stmts WhileStmt() throws ParseException { |
645 | 588 parser.begin(); |
679
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589 if( !Keyword("while") ) |
104
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590 return parser.failure(null); |
674 | 591 Expr cnd = RequiredExpr(In.NOTHING).single(); |
681 | 592 RequiredKeyword("do"); |
674 | 593 Stmts loop = RequiredLoopBlock(); |
1091
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594 RequiredEnd("end_while"); |
674 | 595 Stmts stmt = new Stmts(); |
677 | 596 stmt.add( "while( Luan.checkBoolean(" ); |
597 stmt.addAll( cnd ); | |
679
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598 stmt.add( ") ) { " ); |
677 | 599 stmt.addAll( loop ); |
679
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600 stmt.add( "} " ); |
666
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601 return parser.success( stmt ); |
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602 } |
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603 |
674 | 604 private Stmts RepeatStmt() throws ParseException { |
645 | 605 parser.begin(); |
679
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606 if( !Keyword("repeat") ) |
104
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607 return parser.failure(null); |
674 | 608 Stmts loop =RequiredLoopBlock(); |
681 | 609 RequiredKeyword("until"); |
674 | 610 Expr cnd = RequiredExpr(In.NOTHING).single(); |
611 Stmts stmt = new Stmts(); | |
679
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612 stmt.add( "do { " ); |
677 | 613 stmt.addAll( loop ); |
614 stmt.add( "} while( !Luan.checkBoolean(" ); | |
615 stmt.addAll( cnd ); | |
679
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616 stmt.add( ") ); " ); |
666
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617 return parser.success( stmt ); |
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618 } |
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619 |
674 | 620 private Stmts RequiredLoopBlock() throws ParseException { |
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621 incLoops(); |
674 | 622 Stmts stmt = RequiredBlock(); |
104
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623 decLoops(); |
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624 return stmt; |
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625 } |
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626 |
674 | 627 private Stmts IfStmt() throws ParseException { |
104
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628 parser.begin(); |
679
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629 if( !Keyword("if") ) |
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630 return parser.failure(null); |
674 | 631 Stmts stmt = new Stmts(); |
632 Expr cnd; | |
633 Stmts block; | |
684 | 634 boolean hasReturn = true; |
674 | 635 cnd = RequiredExpr(In.NOTHING).single(); |
681 | 636 RequiredKeyword("then"); |
653
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637 block = RequiredBlock(); |
677 | 638 stmt.add( "if( Luan.checkBoolean(" ); |
639 stmt.addAll( cnd ); | |
679
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640 stmt.add( ") ) { " ); |
677 | 641 stmt.addAll( block ); |
684 | 642 if( !block.hasReturn ) |
643 hasReturn = false; | |
679
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644 while( Keyword("elseif") ) { |
674 | 645 cnd = RequiredExpr(In.NOTHING).single(); |
681 | 646 RequiredKeyword("then"); |
653
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647 block = RequiredBlock(); |
677 | 648 stmt.add( "} else if( Luan.checkBoolean(" ); |
649 stmt.addAll( cnd ); | |
679
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650 stmt.add( ") ) { " ); |
677 | 651 stmt.addAll( block ); |
684 | 652 if( !block.hasReturn ) |
653 hasReturn = false; | |
104
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654 } |
679
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655 if( Keyword("else") ) { |
653
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656 block = RequiredBlock(); |
679
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657 stmt.add( "} else { " ); |
677 | 658 stmt.addAll( block ); |
684 | 659 if( !block.hasReturn ) |
660 hasReturn = false; | |
661 } else { | |
662 hasReturn = false; | |
653
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663 } |
1091
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664 RequiredEnd("end_if"); |
679
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665 stmt.add( "} " ); |
684 | 666 stmt.hasReturn = hasReturn; |
666
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667 return parser.success( stmt ); |
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668 } |
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669 |
674 | 670 private Stmts SetStmt() throws ParseException { |
104
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671 parser.begin(); |
660 | 672 List<Var> vars = new ArrayList<Var>(); |
673 Var v = SettableVar(); | |
674 if( v == null ) | |
104
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675 return parser.failure(null); |
660 | 676 vars.add(v); |
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677 while( parser.match( ',' ) ) { |
679
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678 Spaces(); |
660 | 679 v = SettableVar(); |
680 if( v == null ) | |
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681 return parser.failure(null); |
660 | 682 vars.add(v); |
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683 } |
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684 if( !parser.match( '=' ) ) |
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685 return parser.failure(null); |
679
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686 Spaces(); |
674 | 687 Expr values = ExpStringList(In.NOTHING); |
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688 if( values==null ) |
274
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689 // throw parser.exception("Expressions expected"); |
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690 return parser.failure(null); |
670
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691 return parser.success( makeSetStmt(vars,values) ); |
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692 } |
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693 |
674 | 694 private Stmts makeSetStmt(List<Var> vars,Expr values) throws ParseException { |
660 | 695 int n = vars.size(); |
696 if( n == 1 ) | |
670
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697 return vars.get(0).set(values); |
674 | 698 Stmts stmt = new Stmts(); |
699 String varName = values.valType==Val.ARRAY ? "a" : "t"; | |
677 | 700 stmt.add( varName + " = " ); |
701 stmt.addAll( values ); | |
679
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702 stmt.add( "; " ); |
674 | 703 Expr t = new Expr(values.valType,false); |
677 | 704 t.add( varName ); |
674 | 705 t = t.single(); |
677 | 706 stmt.addAll( vars.get(0).set(t) ); |
660 | 707 for( int i=1; i<n; i++ ) { |
677 | 708 t.clear(); |
709 t.add( "LuanImpl.pick(" + varName + ","+i+")" ); | |
710 stmt.addAll( vars.get(i).set(t) ); | |
660 | 711 } |
670
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|
712 return stmt; |
652
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compile SetStmt and ForStmt
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|
713 } |
671 | 714 |
674 | 715 private Stmts makeLocalSetStmt(List<String> names,Expr values) throws ParseException { |
671 | 716 int n = names.size(); |
717 if( n == 1 ) | |
674 | 718 return addSymbol(names.get(0),values.single()); |
719 Stmts stmt = new Stmts(); | |
720 String varName = values.valType==Val.ARRAY ? "a" : "t"; | |
677 | 721 stmt.add( varName + " = " ); |
722 stmt.addAll( values ); | |
679
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723 stmt.add( "; " ); |
674 | 724 Expr t = new Expr(values.valType,false); |
677 | 725 t.add( varName ); |
674 | 726 t = t.single(); |
677 | 727 stmt.addAll( addSymbol(names.get(0),t) ); |
671 | 728 for( int i=1; i<n; i++ ) { |
677 | 729 t.clear(); |
730 t.add( "LuanImpl.pick(" + varName + ","+i+")" ); | |
731 stmt.addAll( addSymbol(names.get(i),t) ); | |
652
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732 } |
671 | 733 return stmt; |
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734 } |
671 | 735 |
674 | 736 private Stmts ExpressionsStmt() throws ParseException { |
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737 parser.begin(); |
674 | 738 Expr exp = ExprZ(In.NOTHING); |
651
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|
739 if( exp != null && exp.isStmt ) { |
674 | 740 Stmts stmt = new Stmts(); |
741 if( exp.valType==Val.SINGLE ) { | |
677 | 742 stmt.add( "LuanImpl.nop(" ); |
743 stmt.addAll( exp ); | |
744 stmt.add( ")" ); | |
666
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745 } else { |
677 | 746 stmt.addAll( exp ); |
666
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747 } |
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|
748 stmt.add( "; " ); |
666
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|
749 return parser.success( stmt ); |
651
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diff
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750 } |
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751 return parser.failure(null); |
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752 } |
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753 |
660 | 754 private Var SettableVar() throws ParseException { |
104
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755 int start = parser.begin(); |
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756 Var var = VarZ(In.NOTHING); |
660 | 757 if( var==null || !var.isSettable() ) |
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758 return parser.failure(null); |
660 | 759 return parser.success( var ); |
104
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760 } |
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761 |
674 | 762 private Expr RequiredExpr(In in) throws ParseException { |
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763 parser.begin(); |
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764 return parser.success(required(ExprZ(in),"Bad expression")); |
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765 } |
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766 |
674 | 767 private Expr ExprZ(In in) throws ParseException { |
449 | 768 return OrExpr(in); |
19
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769 } |
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parents:
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diff
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770 |
674 | 771 private Expr OrExpr(In in) throws ParseException { |
645 | 772 parser.begin(); |
674 | 773 Expr exp = AndExpr(in); |
104
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774 if( exp==null ) |
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775 return parser.failure(null); |
679
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776 while( Keyword("or") ) { |
674 | 777 exp = exp.single(); |
773 | 778 Expr exp2 = required(AndExpr(in)).single(); |
674 | 779 Expr newExp = new Expr(Val.SINGLE,true); |
677 | 780 newExp.add( "(LuanImpl.cnd(t = " ); |
781 newExp.addAll( exp ); | |
782 newExp.add( ") ? t : (" ); | |
783 newExp.addAll( exp2 ); | |
784 newExp.add( "))" ); | |
666
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785 exp = newExp; |
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786 } |
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787 return parser.success(exp); |
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788 } |
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789 |
674 | 790 private Expr AndExpr(In in) throws ParseException { |
645 | 791 parser.begin(); |
674 | 792 Expr exp = RelExpr(in); |
104
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793 if( exp==null ) |
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794 return parser.failure(null); |
679
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795 while( Keyword("and") ) { |
674 | 796 exp = exp.single(); |
797 Expr exp2 = required(RelExpr(in)).single(); | |
798 Expr newExp = new Expr(Val.SINGLE,true); | |
677 | 799 newExp.add( "(LuanImpl.cnd(t = " ); |
800 newExp.addAll( exp ); | |
801 newExp.add( ") ? (" ); | |
802 newExp.addAll( exp2 ); | |
803 newExp.add( ") : t)" ); | |
666
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804 exp = newExp; |
104
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805 } |
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806 return parser.success(exp); |
18
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add NumericForStmt
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807 } |
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808 |
674 | 809 private Expr RelExpr(In in) throws ParseException { |
645 | 810 parser.begin(); |
674 | 811 Expr exp = ConcatExpr(in); |
104
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812 if( exp==null ) |
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813 return parser.failure(null); |
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814 while(true) { |
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815 if( parser.match("==") ) { |
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816 Spaces(); |
674 | 817 exp = exp.single(); |
818 Expr exp2 = required(ConcatExpr(in)).single(); | |
819 Expr newExp = new Expr(Val.SINGLE,false); | |
677 | 820 newExp.add( "LuanImpl.eq(luan," ); |
821 newExp.addAll( exp ); | |
822 newExp.add( "," ); | |
823 newExp.addAll( exp2 ); | |
824 newExp.add( ")" ); | |
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825 exp = newExp; |
104
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826 } else if( parser.match("~=") ) { |
679
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827 Spaces(); |
674 | 828 exp = exp.single(); |
829 Expr exp2 = required(ConcatExpr(in)).single(); | |
830 Expr newExp = new Expr(Val.SINGLE,false); | |
677 | 831 newExp.add( "!LuanImpl.eq(luan," ); |
832 newExp.addAll( exp ); | |
833 newExp.add( "," ); | |
834 newExp.addAll( exp2 ); | |
835 newExp.add( ")" ); | |
666
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836 exp = newExp; |
104
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837 } else if( parser.match("<=") ) { |
679
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838 Spaces(); |
674 | 839 exp = exp.single(); |
840 Expr exp2 = required(ConcatExpr(in)).single(); | |
841 Expr newExp = new Expr(Val.SINGLE,false); | |
677 | 842 newExp.add( "LuanImpl.le(luan," ); |
843 newExp.addAll( exp ); | |
844 newExp.add( "," ); | |
845 newExp.addAll( exp2 ); | |
846 newExp.add( ")" ); | |
666
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847 exp = newExp; |
104
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848 } else if( parser.match(">=") ) { |
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849 Spaces(); |
674 | 850 exp = exp.single(); |
851 Expr exp2 = required(ConcatExpr(in)).single(); | |
852 Expr newExp = new Expr(Val.SINGLE,false); | |
677 | 853 newExp.add( "LuanImpl.le(luan," ); |
854 newExp.addAll( exp2 ); | |
855 newExp.add( "," ); | |
856 newExp.addAll( exp ); | |
857 newExp.add( ")" ); | |
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858 exp = newExp; |
104
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859 } else if( parser.match("<") ) { |
679
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860 Spaces(); |
674 | 861 exp = exp.single(); |
862 Expr exp2 = required(ConcatExpr(in)).single(); | |
863 Expr newExp = new Expr(Val.SINGLE,false); | |
677 | 864 newExp.add( "LuanImpl.lt(luan," ); |
865 newExp.addAll( exp ); | |
866 newExp.add( "," ); | |
867 newExp.addAll( exp2 ); | |
868 newExp.add( ")" ); | |
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869 exp = newExp; |
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870 } else if( parser.match(">") ) { |
679
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871 Spaces(); |
674 | 872 exp = exp.single(); |
873 Expr exp2 = required(ConcatExpr(in)).single(); | |
874 Expr newExp = new Expr(Val.SINGLE,false); | |
677 | 875 newExp.add( "LuanImpl.lt(luan," ); |
876 newExp.addAll( exp2 ); | |
877 newExp.add( "," ); | |
878 newExp.addAll( exp ); | |
879 newExp.add( ")" ); | |
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880 exp = newExp; |
104
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881 } else |
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882 break; |
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883 } |
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884 return parser.success(exp); |
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885 } |
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886 |
674 | 887 private Expr ConcatExpr(In in) throws ParseException { |
645 | 888 parser.begin(); |
674 | 889 Expr exp = SumExpr(in); |
104
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890 if( exp==null ) |
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891 return parser.failure(null); |
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892 if( parser.match("..") ) { |
679
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893 Spaces(); |
674 | 894 exp = exp.single(); |
895 Expr exp2 = required(ConcatExpr(in)).single(); | |
896 Expr newExp = new Expr(Val.SINGLE,false); | |
677 | 897 newExp.add( "LuanImpl.concat(luan," ); |
898 newExp.addAll( exp ); | |
899 newExp.add( "," ); | |
900 newExp.addAll( exp2 ); | |
901 newExp.add( ")" ); | |
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902 exp = newExp; |
104
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903 } |
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904 return parser.success(exp); |
28
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905 } |
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906 |
674 | 907 private Expr SumExpr(In in) throws ParseException { |
645 | 908 parser.begin(); |
674 | 909 Expr exp = TermExpr(in); |
104
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910 if( exp==null ) |
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911 return parser.failure(null); |
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912 while(true) { |
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913 if( parser.match('+') ) { |
679
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|
914 Spaces(); |
674 | 915 exp = exp.single(); |
916 Expr exp2 = required(TermExpr(in)).single(); | |
917 Expr newExp = new Expr(Val.SINGLE,false); | |
677 | 918 newExp.add( "LuanImpl.add(luan," ); |
919 newExp.addAll( exp ); | |
920 newExp.add( "," ); | |
921 newExp.addAll( exp2 ); | |
922 newExp.add( ")" ); | |
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923 exp = newExp; |
104
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924 } else if( Minus() ) { |
679
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|
925 Spaces(); |
674 | 926 exp = exp.single(); |
927 Expr exp2 = required(TermExpr(in)).single(); | |
928 Expr newExp = new Expr(Val.SINGLE,false); | |
677 | 929 newExp.add( "LuanImpl.sub(luan," ); |
930 newExp.addAll( exp ); | |
931 newExp.add( "," ); | |
932 newExp.addAll( exp2 ); | |
933 newExp.add( ")" ); | |
666
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934 exp = newExp; |
104
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935 } else |
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936 break; |
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937 } |
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938 return parser.success(exp); |
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939 } |
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940 |
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941 private boolean Minus() { |
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942 parser.begin(); |
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943 return parser.match('-') && !parser.match('-') ? parser.success() : parser.failure(); |
12
9cea1aea5eef
CmdLine can run files
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944 } |
9cea1aea5eef
CmdLine can run files
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945 |
674 | 946 private Expr TermExpr(In in) throws ParseException { |
645 | 947 parser.begin(); |
674 | 948 Expr exp = UnaryExpr(in); |
650
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finish compiling operators
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949 if( exp==null ) |
104
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950 return parser.failure(null); |
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951 while(true) { |
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952 if( parser.match('*') ) { |
679
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953 Spaces(); |
674 | 954 exp = exp.single(); |
955 Expr exp2 = required(UnaryExpr(in)).single(); | |
956 Expr newExp = new Expr(Val.SINGLE,false); | |
677 | 957 newExp.add( "LuanImpl.mul(luan," ); |
958 newExp.addAll( exp ); | |
959 newExp.add( "," ); | |
960 newExp.addAll( exp2 ); | |
961 newExp.add( ")" ); | |
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962 exp = newExp; |
104
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963 } else if( parser.match('/') ) { |
679
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964 Spaces(); |
674 | 965 exp = exp.single(); |
966 Expr exp2 = required(UnaryExpr(in)).single(); | |
967 Expr newExp = new Expr(Val.SINGLE,false); | |
677 | 968 newExp.add( "LuanImpl.div(luan," ); |
969 newExp.addAll( exp ); | |
970 newExp.add( "," ); | |
971 newExp.addAll( exp2 ); | |
972 newExp.add( ")" ); | |
666
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973 exp = newExp; |
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974 } else if( Mod() ) { |
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975 Spaces(); |
674 | 976 exp = exp.single(); |
977 Expr exp2 = required(UnaryExpr(in)).single(); | |
978 Expr newExp = new Expr(Val.SINGLE,false); | |
677 | 979 newExp.add( "LuanImpl.mod(luan," ); |
980 newExp.addAll( exp ); | |
981 newExp.add( "," ); | |
982 newExp.addAll( exp2 ); | |
983 newExp.add( ")" ); | |
666
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984 exp = newExp; |
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985 } else |
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986 break; |
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987 } |
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988 return parser.success(exp); |
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989 } |
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990 |
107
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991 private boolean Mod() { |
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992 parser.begin(); |
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993 return parser.match('%') && !parser.match('>') ? parser.success() : parser.failure(); |
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994 } |
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995 |
674 | 996 private Expr UnaryExpr(In in) throws ParseException { |
645 | 997 parser.begin(); |
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998 if( parser.match('#') ) { |
679
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999 Spaces(); |
674 | 1000 Expr exp = required(UnaryExpr(in)).single(); |
1001 Expr newExp = new Expr(Val.SINGLE,false); | |
677 | 1002 newExp.add( "LuanImpl.len(luan," ); |
1003 newExp.addAll( exp ); | |
1004 newExp.add( ")" ); | |
666
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1005 return parser.success(newExp); |
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1006 } |
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1007 if( Minus() ) { |
679
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1008 Spaces(); |
674 | 1009 Expr exp = required(UnaryExpr(in)).single(); |
1010 Expr newExp = new Expr(Val.SINGLE,false); | |
677 | 1011 newExp.add( "LuanImpl.unm(luan," ); |
1012 newExp.addAll( exp ); | |
1013 newExp.add( ")" ); | |
666
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1014 return parser.success(newExp); |
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1015 } |
679
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1016 if( Keyword("not") ) { |
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1017 Spaces(); |
674 | 1018 Expr exp = required(UnaryExpr(in)).single(); |
1019 Expr newExp = new Expr(Val.SINGLE,false); | |
677 | 1020 newExp.add( "!Luan.checkBoolean(" ); |
1021 newExp.addAll( exp ); | |
1022 newExp.add( ")" ); | |
666
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1023 return parser.success(newExp); |
104
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1024 } |
674 | 1025 Expr exp = PowExpr(in); |
104
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1026 if( exp==null ) |
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1027 return parser.failure(null); |
650
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1028 return parser.success(exp); |
104
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1029 } |
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|
1030 |
674 | 1031 private Expr PowExpr(In in) throws ParseException { |
645 | 1032 parser.begin(); |
674 | 1033 Expr exp1 = SingleExpr(in); |
657 | 1034 if( exp1==null ) |
104
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1035 return parser.failure(null); |
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|
1036 if( parser.match('^') ) { |
679
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|
1037 Spaces(); |
674 | 1038 Expr exp2 = required(PowExpr(in)); |
1039 Expr newExp = new Expr(Val.SINGLE,false); | |
677 | 1040 newExp.add( "LuanImpl.pow(luan," ); |
1041 newExp.addAll( exp1.single() ); | |
1042 newExp.add( "," ); | |
1043 newExp.addAll( exp2.single() ); | |
1044 newExp.add( ")" ); | |
666
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|
1045 exp1 = newExp; |
104
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1046 } |
650
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|
1047 return parser.success(exp1); |
14
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|
1048 } |
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|
1049 |
674 | 1050 private Expr SingleExpr(In in) throws ParseException { |
104
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1051 parser.begin(); |
681 | 1052 Expr exp = FunctionExpr(); |
670
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|
1053 if( exp != null ) |
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|
1054 return parser.success(exp); |
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1055 exp = VarExp(in); |
104
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1056 if( exp != null ) |
670
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|
1057 return parser.success(exp); |
679
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1058 exp = VarArgs(); |
670
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|
1059 if( exp != null ) |
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1060 return parser.success(exp); |
104
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1061 return parser.failure(null); |
14
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1062 } |
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1063 |
681 | 1064 private Expr FunctionExpr() throws ParseException { |
679
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1065 if( !Keyword("function") ) |
104
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1066 return null; |
681 | 1067 return RequiredFunction(null); |
20
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1068 } |
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1069 |
681 | 1070 private Expr RequiredFunction(String name) throws ParseException { |
678 | 1071 parser.begin(); |
104
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1072 RequiredMatch('('); |
679
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1073 Spaces(); |
104
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1074 frame = new Frame(frame); |
674 | 1075 Stmts stmt = new Stmts(); |
679
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1076 List<String> names = NameList(); |
104
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1077 if( names != null ) { |
1089
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|
1078 /* |
674 | 1079 Expr args = new Expr(Val.ARRAY,false); |
677 | 1080 args.add( "args" ); |
1081 stmt.addAll( makeLocalSetStmt(names,args) ); | |
1089
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1082 */ |
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1083 int n = names.size(); |
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1084 Expr t = new Expr(Val.SINGLE,false); |
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1085 for( int i=0; i<n; i++ ) { |
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1086 t.clear(); |
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1087 t.add( "LuanImpl.pick(args,"+i+")" ); |
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1088 stmt.addAll( addSymbol(names.get(i),t) ); |
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1089 } |
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1090 |
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1091 if( parser.match(',') ) { |
679
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1092 Spaces(); |
104
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1093 if( !parser.match("...") ) |
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1094 throw parser.exception(); |
679
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1095 Spaces(); |
104
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1096 frame.isVarArg = true; |
679
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1097 stmt.add( "final Object[] varArgs = LuanImpl.varArgs(args," + names.size() + "); " ); |
1089
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1098 } else { |
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1099 stmt.add( "LuanImpl.noMore(args,"+n+"); " ); |
104
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1100 } |
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1101 } else if( parser.match("...") ) { |
679
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1102 Spaces(); |
104
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1103 frame.isVarArg = true; |
679
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1104 stmt.add( "final Object[] varArgs = LuanImpl.varArgs(args,0); " ); |
1089
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1105 } else { |
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1106 stmt.add( "LuanImpl.noMore(args,0); " ); |
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1107 } |
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1108 RequiredMatch(')'); |
679
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1109 Spaces(); |
674 | 1110 Stmts block = RequiredBlock(); |
677 | 1111 stmt.addAll( block ); |
670
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1112 stmt.hasReturn = block.hasReturn; |
681 | 1113 Expr fnDef = newFnExp(stmt,name); |
1091
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1114 RequiredEnd("end_function"); |
104
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1115 frame = frame.parent; |
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1116 return parser.success(fnDef); |
11
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1117 } |
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1118 |
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1119 private Expr VarArgs() throws ParseException { |
645 | 1120 parser.begin(); |
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1121 if( !frame.isVarArg || !parser.match("...") ) |
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1122 return parser.failure(null); |
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1123 Spaces(); |
674 | 1124 Expr exp = new Expr(Val.ARRAY,false); |
677 | 1125 exp.add("varArgs"); |
670
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1126 return parser.success(exp); |
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1127 } |
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1128 |
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1129 private Expr TableExpr() throws ParseException { |
645 | 1130 parser.begin(); |
104
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1131 if( !parser.match('{') ) |
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1132 return parser.failure(null); |
682 | 1133 Expr tblExp = new Expr(Val.SINGLE,false); |
1134 tblExp.add( "LuanImpl.table(" ); | |
1135 Expr lastExp = tblExp; | |
1136 List<Expr> builder = new ArrayList<Expr>(); | |
1137 /* | |
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1138 Spaces(); |
655 | 1139 Field(builder); |
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1140 while( FieldSep() ) { |
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1141 Spaces(); |
655 | 1142 Field(builder); |
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1143 } |
682 | 1144 */ |
1145 do { | |
1146 Spaces(); lastExp.addNewLines(); | |
1147 Expr exp = Field(); | |
1148 if( exp != null ) { | |
1149 builder.add(exp); | |
1150 lastExp = exp; | |
1151 Spaces(); lastExp.addNewLines(); | |
1152 } | |
1153 } while( FieldSep() ); | |
674 | 1154 Expr exp = TemplateExpressions(In.NOTHING); |
245
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1155 if( exp != null ) |
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1156 builder.add(exp); |
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1157 if( !parser.match('}') ) |
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1158 throw parser.exception("Expected table element or '}'"); |
682 | 1159 tblExp.addAll( expString(builder).array() ); |
1160 tblExp.add( ")" ); | |
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1161 Spaces(); |
682 | 1162 tblExp.addNewLines(); |
1163 return parser.success( tblExp ); | |
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1164 } |
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1165 |
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1166 private boolean FieldSep() throws ParseException { |
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1167 return parser.anyOf(",;") || EndOfLine(); |
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1168 } |
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1169 |
682 | 1170 private Expr Field() throws ParseException { |
104
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1171 parser.begin(); |
674 | 1172 Expr exp = SubExpr(In.NOTHING); |
104
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1173 if( exp==null ) |
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1174 exp = NameExpr(); |
104
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1175 if( exp!=null && parser.match('=') ) { |
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1176 Spaces(); |
674 | 1177 Expr val = RequiredExpr(In.NOTHING).single(); |
1178 Expr newExp = new Expr(Val.SINGLE,false); | |
677 | 1179 newExp.add( "new TableField(" ); |
1180 newExp.addAll( exp ); | |
1181 newExp.add( "," ); | |
1182 newExp.addAll( val ); | |
1183 newExp.add( ")" ); | |
682 | 1184 return parser.success(newExp); |
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1185 } |
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1186 parser.rollback(); |
674 | 1187 Expr exprs = ExprZ(In.NOTHING); |
154
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1188 if( exprs != null ) { |
682 | 1189 return parser.success(exprs); |
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1190 } |
682 | 1191 return parser.failure(null); |
7
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1192 } |
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1193 |
674 | 1194 private Expr VarExp(In in) throws ParseException { |
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1195 Var var = VarZ(in); |
656 | 1196 return var==null ? null : var.exp(); |
8
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1197 } |
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1198 |
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1199 private Var VarZ(In in) throws ParseException { |
645 | 1200 parser.begin(); |
1201 Var var = VarStart(in); | |
104
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1202 if( var==null ) |
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1203 return parser.failure(null); |
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1204 Var var2; |
656 | 1205 while( (var2=Var2(in,var.exp())) != null ) { |
104
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1206 var = var2; |
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1207 } |
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1208 return parser.success(var); |
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1209 } |
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1210 |
645 | 1211 private Var VarStart(In in) throws ParseException { |
206
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1212 if( parser.match('(') ) { |
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1213 Spaces(); |
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1214 Expr exp = RequiredExpr(in).single(); |
206
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1215 RequiredMatch(')'); |
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1216 Spaces(); |
206
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1217 return exprVar(exp); |
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1218 } |
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1219 String name = Name(); |
206
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1220 if( name != null ) |
645 | 1221 return nameVar(name); |
674 | 1222 Expr exp; |
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1223 exp = TableExpr(); |
206
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1224 if( exp != null ) |
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1225 return exprVar(exp); |
679
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1226 exp = Literal(); |
206
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1227 if( exp != null ) |
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1228 return exprVar(exp); |
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1229 return null; |
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1230 } |
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1231 |
674 | 1232 private Var Var2(In in,Expr exp1) throws ParseException { |
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1233 parser.begin(); |
674 | 1234 Expr exp2 = SubExpr(in); |
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1235 if( exp2 != null ) |
656 | 1236 return parser.success(indexVar(exp1,exp2)); |
104
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1237 if( parser.match('.') ) { |
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1238 Spaces(); |
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1239 exp2 = NameExpr(); |
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1240 if( exp2!=null ) |
656 | 1241 return parser.success(indexVar(exp1,exp2)); |
636 | 1242 return parser.failure(null); |
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1243 } |
674 | 1244 Expr fnCall = Args( in, exp1, new ArrayList<Expr>() ); |
206
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1245 if( fnCall != null ) |
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1246 return parser.success(exprVar(fnCall)); |
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1247 return parser.failure(null); |
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1248 } |
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1249 |
503 | 1250 private interface Var { |
674 | 1251 public Expr exp() throws ParseException; |
660 | 1252 // public Settable settable() throws ParseException; |
1253 public boolean isSettable(); | |
674 | 1254 public Stmts set(Expr val) throws ParseException; |
503 | 1255 } |
1256 | |
674 | 1257 private Expr env() { |
670
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1258 Sym sym = getSym("_ENV"); |
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1259 if( sym != null ) |
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1260 return sym.exp(); |
503 | 1261 return null; |
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1262 } |
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1263 |
645 | 1264 private Var nameVar(final String name) { |
104
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1265 return new Var() { |
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1266 |
674 | 1267 public Expr exp() throws ParseException { |
670
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1268 Sym sym = getSym(name); |
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1269 if( sym != null ) |
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1270 return sym.exp(); |
674 | 1271 Expr envExpr = env(); |
503 | 1272 if( envExpr != null ) |
670
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1273 return indexExpStr( envExpr, constExpStr(name) ); |
503 | 1274 parser.failure(null); |
1275 throw parser.exception("name '"+name+"' not defined"); | |
104
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1276 } |
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|
1277 |
660 | 1278 public boolean isSettable() { |
1279 return true; | |
1280 } | |
674 | 1281 |
1282 public Stmts set(Expr val) throws ParseException { | |
670
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1283 Sym sym = getSym(name); |
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1284 if( sym != null ) { |
674 | 1285 Stmts stmt = new Stmts(); |
677 | 1286 stmt.addAll( sym.exp() ); |
1287 stmt.add( " = " ); | |
1288 stmt.addAll( val.single() ); | |
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1289 stmt.add( "; " ); |
670
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1290 return stmt; |
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1291 } |
674 | 1292 Expr envExpr = env(); |
670
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1293 if( envExpr != null ) |
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1294 return indexVar( envExpr, constExpStr(name) ).set(val); |
687 | 1295 parser.failure(null); |
1296 throw parser.exception("name '"+name+"' not defined"); | |
660 | 1297 } |
104
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1298 }; |
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1299 } |
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1300 |
674 | 1301 private Var exprVar(final Expr expr) { |
104
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1302 return new Var() { |
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1303 |
674 | 1304 public Expr exp() { |
104
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1305 return expr; |
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1306 } |
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1307 |
660 | 1308 public boolean isSettable() { |
1309 return false; | |
1310 } | |
1311 | |
674 | 1312 public Stmts set(Expr val) { |
660 | 1313 throw new RuntimeException(); |
104
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1314 } |
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1315 }; |
11
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1316 } |
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1317 |
674 | 1318 private Var indexVar(final Expr table,final Expr key) { |
104
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1319 return new Var() { |
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1320 |
674 | 1321 public Expr exp() { |
656 | 1322 return indexExpStr( table, key ); |
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1323 } |
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1324 |
660 | 1325 public boolean isSettable() { |
1326 return true; | |
1327 } | |
674 | 1328 |
1329 public Stmts set(Expr val) { | |
1330 Stmts stmt = new Stmts(); | |
677 | 1331 stmt.add( "LuanImpl.put(luan," ); |
1332 stmt.addAll( table.single() ); | |
1333 stmt.add( "," ); | |
1334 stmt.addAll( key.single() ); | |
1335 stmt.add( "," ); | |
1336 stmt.addAll( val.single() ); | |
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1337 stmt.add( "); " ); |
666
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1338 return stmt; |
660 | 1339 } |
104
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1340 }; |
9
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1341 } |
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1342 |
674 | 1343 private Expr Args(In in,Expr fn,List<Expr> builder) throws ParseException { |
104
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1344 parser.begin(); |
129
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1345 return args(in,builder) |
656 | 1346 ? parser.success( callExpStr( fn, expString(builder) ) ) |
674 | 1347 : parser.failure((Expr)null); |
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1348 } |
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1349 |
674 | 1350 private boolean args(In in,List<Expr> builder) throws ParseException { |
645 | 1351 parser.begin(); |
104
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1352 if( parser.match('(') ) { |
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1353 Spaces(); |
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1354 ExpList(in,builder); // optional |
107
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1355 if( !parser.match(')') ) |
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1356 throw parser.exception("Expression or ')' expected"); |
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1357 Spaces(); |
1093
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1358 parser.upSb(); |
195
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1359 return parser.success(); |
107
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1360 } |
679
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1361 Expr exp = TableExpr(); |
107
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1362 if( exp != null ) { |
655 | 1363 builder.add(exp); |
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1364 return parser.success(); |
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1365 } |
714 | 1366 exp = StringLiteral(); |
1367 if( exp != null ) { | |
1368 builder.add(exp); | |
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1369 return parser.success(); |
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1370 } |
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1371 return parser.failure(); |
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1372 } |
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|
1373 |
674 | 1374 private Expr ExpStringList(In in) throws ParseException { |
1375 List<Expr> builder = new ArrayList<Expr>(); | |
654 | 1376 return ExpList(in,builder) ? expString(builder) : null; |
652
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1377 } |
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1378 |
674 | 1379 private boolean ExpList(In in,List<Expr> builder) throws ParseException { |
104
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1380 parser.begin(); |
674 | 1381 Expr exp = TemplateExpressions(in); |
158
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1382 if( exp != null ) { |
654 | 1383 builder.add(exp); |
158
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1384 return parser.success(); |
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1385 } |
654 | 1386 exp = ExprZ(in); |
1387 if( exp==null ) | |
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1388 return parser.failure(); |
700 | 1389 exp.addNewLines(); |
654 | 1390 builder.add(exp); |
104
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1391 while( parser.match(',') ) { |
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1392 Spaces(); |
158
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1393 exp = TemplateExpressions(in); |
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1394 if( exp != null ) { |
654 | 1395 builder.add(exp); |
158
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1396 return parser.success(); |
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1397 } |
700 | 1398 exp = RequiredExpr(in); |
1093
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1399 exp.prependNewLines(); |
700 | 1400 builder.add(exp); |
104
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1401 } |
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1402 return parser.success(); |
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1403 } |
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1404 |
674 | 1405 private Expr SubExpr(In in) throws ParseException { |
104
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1406 parser.begin(); |
209
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1407 if( !parser.match('[') || parser.test("[") || parser.test("=") ) |
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1408 return parser.failure(null); |
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1409 Spaces(); |
674 | 1410 Expr exp = RequiredExpr(In.NOTHING).single(); |
104
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1411 RequiredMatch(']'); |
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1412 Spaces(); |
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1413 return parser.success(exp); |
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1414 } |
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1415 |
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1416 private Expr NameExpr() throws ParseException { |
645 | 1417 parser.begin(); |
679
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1418 String name = Name(); |
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1419 if( name==null ) |
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1420 return parser.failure(null); |
656 | 1421 return parser.success(constExpStr(name)); |
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1422 } |
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1423 |
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1424 private String RequiredName() throws ParseException { |
104
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|
1425 parser.begin(); |
679
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|
1426 String name = Name(); |
104
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|
1427 if( name==null ) |
139
3b384dc5ca91
replace WebShell.java with web_shell.luan
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1428 throw parser.exception("Name expected"); |
104
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1429 return parser.success(name); |
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|
1430 } |
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|
1431 |
679
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|
1432 private String Name() throws ParseException { |
104
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|
1433 int start = parser.begin(); |
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|
1434 if( !NameFirstChar() ) |
754e6030c029
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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|
1435 return parser.failure(null); |
754e6030c029
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|
1436 while( NameChar() ); |
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|
1437 String match = parser.textFrom(start); |
754e6030c029
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|
1438 if( keywords.contains(match) ) |
754e6030c029
remove parboiled and rewrite parser;
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|
1439 return parser.failure(null); |
679
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|
1440 Spaces(); |
104
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|
1441 return parser.success(match); |
17
09d41f7490a8
add local variables
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parents:
16
diff
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|
1442 } |
09d41f7490a8
add local variables
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|
1443 |
104
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|
1444 private boolean NameChar() { |
754e6030c029
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|
1445 return NameFirstChar() || Digit(); |
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1446 } |
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1447 |
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|
1448 private boolean NameFirstChar() { |
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|
1449 return parser.inCharRange('a', 'z') || parser.inCharRange('A', 'Z') || parser.match('_'); |
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1450 } |
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1451 |
754e6030c029
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|
1452 private void RequiredMatch(char c) throws ParseException { |
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|
1453 if( !parser.match(c) ) |
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|
1454 throw parser.exception("'"+c+"' expected"); |
9
600676034a1a
add variables and tables
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1455 } |
600676034a1a
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1456 |
104
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|
1457 private void RequiredMatch(String s) throws ParseException { |
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|
1458 if( !parser.match(s) ) |
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|
1459 throw parser.exception("'"+s+"' expected"); |
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1460 } |
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|
1461 |
1091
20d5968e65cc
add end_do, end_for, end_function, end_if, end_while
Franklin Schmidt <fschmidt@gmail.com>
parents:
1089
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|
1462 private void RequiredEnd(String keyword) throws ParseException { |
20d5968e65cc
add end_do, end_for, end_function, end_if, end_while
Franklin Schmidt <fschmidt@gmail.com>
parents:
1089
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|
1463 if( !Keyword("end") && !Keyword(keyword) ) |
20d5968e65cc
add end_do, end_for, end_function, end_if, end_while
Franklin Schmidt <fschmidt@gmail.com>
parents:
1089
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|
1464 throw parser.exception("'"+keyword+"' or 'end' expected"); |
20d5968e65cc
add end_do, end_for, end_function, end_if, end_while
Franklin Schmidt <fschmidt@gmail.com>
parents:
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|
1465 } |
20d5968e65cc
add end_do, end_for, end_function, end_if, end_while
Franklin Schmidt <fschmidt@gmail.com>
parents:
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|
1466 |
681 | 1467 private void RequiredKeyword(String keyword) throws ParseException { |
679
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|
1468 if( !Keyword(keyword) ) |
104
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|
1469 throw parser.exception("'"+keyword+"' expected"); |
9
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|
1470 } |
600676034a1a
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1471 |
679
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|
1472 private boolean Keyword(String keyword) throws ParseException { |
104
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1473 parser.begin(); |
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|
1474 if( !parser.match(keyword) || NameChar() ) |
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|
1475 return parser.failure(); |
679
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|
1476 Spaces(); |
1093
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|
1477 parser.upSb(); |
104
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1478 return parser.success(); |
12
9cea1aea5eef
CmdLine can run files
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1479 } |
9cea1aea5eef
CmdLine can run files
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1480 |
104
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|
1481 private static final Set<String> keywords = new HashSet<String>(Arrays.asList( |
12
9cea1aea5eef
CmdLine can run files
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|
1482 "and", |
9cea1aea5eef
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|
1483 "break", |
9cea1aea5eef
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|
1484 "do", |
9cea1aea5eef
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|
1485 "else", |
9cea1aea5eef
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|
1486 "elseif", |
9cea1aea5eef
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|
1487 "end", |
1091
20d5968e65cc
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|
1488 "end_do", |
20d5968e65cc
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parents:
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|
1489 "end_for", |
20d5968e65cc
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Franklin Schmidt <fschmidt@gmail.com>
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|
1490 "end_function", |
20d5968e65cc
add end_do, end_for, end_function, end_if, end_while
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parents:
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|
1491 "end_if", |
20d5968e65cc
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Franklin Schmidt <fschmidt@gmail.com>
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changeset
|
1492 "end_while", |
12
9cea1aea5eef
CmdLine can run files
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|
1493 "false", |
9cea1aea5eef
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|
1494 "for", |
9cea1aea5eef
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|
1495 "function", |
9cea1aea5eef
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|
1496 "goto", |
9cea1aea5eef
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|
1497 "if", |
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|
1498 "in", |
9cea1aea5eef
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|
1499 "local", |
9cea1aea5eef
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1500 "nil", |
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|
1501 "not", |
9cea1aea5eef
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1502 "or", |
9cea1aea5eef
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|
1503 "repeat", |
9cea1aea5eef
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1504 "return", |
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|
1505 "then", |
9cea1aea5eef
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1506 "true", |
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1507 "until", |
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1508 "while" |
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1509 )); |
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1510 |
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|
1511 private Expr Literal() throws ParseException { |
645 | 1512 parser.begin(); |
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1513 Expr exp = new Expr(Val.SINGLE,false); |
679
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1514 if( NilLiteral() ) { |
677 | 1515 exp.add( "null" ); |
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|
1516 exp.addNewLines(); |
666
2f449ccf54d2
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|
1517 return parser.success(exp); |
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1518 } |
679
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|
1519 Boolean b = BooleanLiteral(); |
666
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1520 if( b != null ) { |
677 | 1521 exp.add( b.toString() ); |
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|
1522 exp.addNewLines(); |
666
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1523 return parser.success(exp); |
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1524 } |
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|
1525 Number n = NumberLiteral(); |
657 | 1526 if( n != null ) { |
1527 String s = n.toString(); | |
1528 if( n instanceof Long ) | |
1529 s += "L"; | |
677 | 1530 exp.add( s ); |
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|
1531 exp.addNewLines(); |
666
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Franklin Schmidt <fschmidt@gmail.com>
parents:
665
diff
changeset
|
1532 return parser.success(exp); |
657 | 1533 } |
714 | 1534 Expr s = StringLiteral(); |
104
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|
1535 if( s != null ) |
714 | 1536 return parser.success(s); |
195
24ede40ee0aa
make MetatableGetter DeepCloneable, scoped, and secure
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parents:
193
diff
changeset
|
1537 return parser.failure(null); |
5
9ef0fd711101
start LuaParser
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parents:
diff
changeset
|
1538 } |
9ef0fd711101
start LuaParser
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff
changeset
|
1539 |
684 | 1540 private static int STR_LIM = 65000; |
1541 | |
674 | 1542 private Expr constExpStr(String s) { |
664 | 1543 s = s |
1544 .replace("\\","\\\\") | |
1545 .replace("\"","\\\"") | |
1546 .replace("\n","\\n") | |
1547 .replace("\r","\\r") | |
1548 .replace("\t","\\t") | |
1549 .replace("\b","\\b") | |
1550 ; | |
684 | 1551 if( s.length() > STR_LIM ) { |
1552 int len = s.length(); | |
1553 StringBuilder sb = new StringBuilder(); | |
1554 sb.append( "LuanImpl.strconcat(" ); | |
1555 int start = 0; | |
1556 while(true) { | |
1557 int end = start + STR_LIM; | |
1558 if( end >= len ) | |
1559 break; | |
1560 sb.append( "\"" ).append( s.substring(start,end) ).append( "\"," ); | |
1561 start = end; | |
1562 } | |
1563 sb.append( "\"" ).append( s.substring(start) ).append( "\")" ); | |
1564 s = sb.toString(); | |
1565 } else | |
1566 s = "\"" + s + "\""; | |
674 | 1567 Expr exp = new Expr(Val.SINGLE,false); |
679
43522473599d
make java line numbers match
Franklin Schmidt <fschmidt@gmail.com>
parents:
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diff
changeset
|
1568 exp.add( s ); |
666
2f449ccf54d2
use lists to assemble source
Franklin Schmidt <fschmidt@gmail.com>
parents:
665
diff
changeset
|
1569 return exp; |
664 | 1570 } |
1571 | |
679
43522473599d
make java line numbers match
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diff
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|
1572 private boolean NilLiteral() throws ParseException { |
43522473599d
make java line numbers match
Franklin Schmidt <fschmidt@gmail.com>
parents:
678
diff
changeset
|
1573 return Keyword("nil"); |
65
1ff53a88579a
multi-line statements
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
60
diff
changeset
|
1574 } |
1ff53a88579a
multi-line statements
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
60
diff
changeset
|
1575 |
679
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make java line numbers match
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diff
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|
1576 private Boolean BooleanLiteral() throws ParseException { |
43522473599d
make java line numbers match
Franklin Schmidt <fschmidt@gmail.com>
parents:
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diff
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|
1577 if( Keyword("true") ) |
104
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|
1578 return true; |
679
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make java line numbers match
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diff
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|
1579 if( Keyword("false") ) |
104
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|
1580 return false; |
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|
1581 return null; |
5
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start LuaParser
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parents:
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changeset
|
1582 } |
9ef0fd711101
start LuaParser
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parents:
diff
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|
1583 |
679
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|
1584 private Number NumberLiteral() throws ParseException { |
104
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|
1585 parser.begin(); |
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|
1586 Number n; |
754e6030c029
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|
1587 if( parser.matchIgnoreCase("0x") ) { |
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|
1588 n = HexNumber(); |
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|
1589 } else { |
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|
1590 n = DecNumber(); |
754e6030c029
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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|
1591 } |
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parents:
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|
1592 if( n==null || NameChar() ) |
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diff
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|
1593 return parser.failure(null); |
679
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diff
changeset
|
1594 Spaces(); |
1093
a656fa45e315
fix multiline statements
Franklin Schmidt <fschmidt@gmail.com>
parents:
1091
diff
changeset
|
1595 parser.upSb(); |
104
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|
1596 return parser.success(n); |
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|
1597 } |
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|
1598 |
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|
1599 private Number DecNumber() { |
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|
1600 int start = parser.begin(); |
535
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parse numeric constants to ints or longs if possible
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parents:
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diff
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|
1601 boolean isInt = true; |
104
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99
diff
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|
1602 if( Int() ) { |
535
289908469e02
parse numeric constants to ints or longs if possible
Franklin Schmidt <fschmidt@gmail.com>
parents:
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diff
changeset
|
1603 if( parser.match('.') ) { |
289908469e02
parse numeric constants to ints or longs if possible
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parents:
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diff
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|
1604 isInt = false; |
104
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|
1605 Int(); // optional |
535
289908469e02
parse numeric constants to ints or longs if possible
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parents:
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diff
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|
1606 } |
104
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99
diff
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|
1607 } else if( parser.match('.') && Int() ) { |
754e6030c029
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|
1608 // ok |
535
289908469e02
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parents:
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|
1609 isInt = false; |
104
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|
1610 } else |
754e6030c029
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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|
1611 return parser.failure(null); |
535
289908469e02
parse numeric constants to ints or longs if possible
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parents:
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diff
changeset
|
1612 if( Exponent() ) // optional |
289908469e02
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Franklin Schmidt <fschmidt@gmail.com>
parents:
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diff
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|
1613 isInt = false; |
289908469e02
parse numeric constants to ints or longs if possible
Franklin Schmidt <fschmidt@gmail.com>
parents:
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diff
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|
1614 String s = parser.textFrom(start); |
289908469e02
parse numeric constants to ints or longs if possible
Franklin Schmidt <fschmidt@gmail.com>
parents:
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diff
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|
1615 if( isInt ) { |
289908469e02
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diff
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|
1616 try { |
289908469e02
parse numeric constants to ints or longs if possible
Franklin Schmidt <fschmidt@gmail.com>
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diff
changeset
|
1617 return parser.success(Integer.valueOf(s)); |
289908469e02
parse numeric constants to ints or longs if possible
Franklin Schmidt <fschmidt@gmail.com>
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diff
changeset
|
1618 } catch(NumberFormatException e) {} |
289908469e02
parse numeric constants to ints or longs if possible
Franklin Schmidt <fschmidt@gmail.com>
parents:
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diff
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|
1619 try { |
289908469e02
parse numeric constants to ints or longs if possible
Franklin Schmidt <fschmidt@gmail.com>
parents:
534
diff
changeset
|
1620 return parser.success(Long.valueOf(s)); |
289908469e02
parse numeric constants to ints or longs if possible
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parents:
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diff
changeset
|
1621 } catch(NumberFormatException e) {} |
289908469e02
parse numeric constants to ints or longs if possible
Franklin Schmidt <fschmidt@gmail.com>
parents:
534
diff
changeset
|
1622 } |
289908469e02
parse numeric constants to ints or longs if possible
Franklin Schmidt <fschmidt@gmail.com>
parents:
534
diff
changeset
|
1623 return parser.success(Double.valueOf(s)); |
5
9ef0fd711101
start LuaParser
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parents:
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changeset
|
1624 } |
9ef0fd711101
start LuaParser
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parents:
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|
1625 |
104
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|
1626 private boolean Exponent() { |
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|
1627 parser.begin(); |
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|
1628 if( !parser.matchIgnoreCase("e") ) |
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|
1629 return parser.failure(); |
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|
1630 parser.anyOf("+-"); // optional |
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|
1631 if( !Int() ) |
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|
1632 return parser.failure(); |
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|
1633 return parser.success(); |
5
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parents:
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changeset
|
1634 } |
9ef0fd711101
start LuaParser
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parents:
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|
1635 |
104
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|
1636 private boolean Int() { |
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|
1637 if( !Digit() ) |
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|
1638 return false; |
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|
1639 while( Digit() ); |
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|
1640 return true; |
5
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parents:
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changeset
|
1641 } |
9ef0fd711101
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parents:
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|
1642 |
104
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|
1643 private boolean Digit() { |
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|
1644 return parser.inCharRange('0', '9'); |
16
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diff
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|
1645 } |
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|
1646 |
104
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|
1647 private Number HexNumber() { |
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|
1648 int start = parser.begin(); |
535
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|
1649 long nLong = 0; |
104
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|
1650 double n; |
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|
1651 if( HexInt() ) { |
535
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changeset
|
1652 nLong = Long.parseLong(parser.textFrom(start),16); |
289908469e02
parse numeric constants to ints or longs if possible
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|
1653 n = (double)nLong; |
104
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|
1654 if( parser.match('.') ) { |
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|
1655 start = parser.currentIndex(); |
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|
1656 if( HexInt() ) { |
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|
1657 String dec = parser.textFrom(start); |
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|
1658 n += (double)Long.parseLong(dec,16) / Math.pow(16,dec.length()); |
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|
1659 } |
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|
1660 } |
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1661 } else if( parser.match('.') && HexInt() ) { |
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1662 String dec = parser.textFrom(start+1); |
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1663 n = (double)Long.parseLong(dec,16) / Math.pow(16,dec.length()); |
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1664 } else { |
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1665 return parser.failure(null); |
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|
1666 } |
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1667 if( parser.matchIgnoreCase("p") ) { |
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1668 parser.anyOf("+-"); // optional |
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1669 start = parser.currentIndex(); |
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1670 if( !HexInt() ) |
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1671 return parser.failure(null); |
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1672 n *= Math.pow(2,(double)Long.parseLong(parser.textFrom(start))); |
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1673 } |
535
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Franklin Schmidt <fschmidt@gmail.com>
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1674 if( nLong == n ) { |
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parse numeric constants to ints or longs if possible
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1675 int nInt = (int)nLong; |
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parse numeric constants to ints or longs if possible
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1676 if( nInt == nLong ) |
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parse numeric constants to ints or longs if possible
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1677 return parser.success(Integer.valueOf(nInt)); |
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1678 return parser.success(Long.valueOf(nLong)); |
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1679 } |
104
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1680 return parser.success(Double.valueOf(n)); |
16
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1681 } |
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1682 |
104
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1683 private boolean HexInt() { |
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1684 if( !HexDigit() ) |
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1685 return false; |
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1686 while( HexDigit() ); |
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1687 return true; |
16
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1688 } |
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1689 |
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1690 |
104
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1691 private boolean HexDigit() { |
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1692 return Digit() || parser.anyOf("abcdefABCDEF"); |
6
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1693 } |
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1694 |
714 | 1695 private Expr StringLiteral() throws ParseException { |
1696 Expr s; | |
104
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1697 if( (s=QuotedString('"'))==null |
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1698 && (s=QuotedString('\''))==null |
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1699 && (s=LongString())==null |
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1700 ) |
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1701 return null; |
679
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|
1702 Spaces(); |
1093
a656fa45e315
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|
1703 s.addNewLines(); |
104
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1704 return s; |
16
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1705 } |
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1706 |
714 | 1707 private Expr LongString() throws ParseException { |
104
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1708 parser.begin(); |
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1709 if( !parser.match('[') ) |
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1710 return parser.failure(null); |
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1711 int start = parser.currentIndex(); |
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1712 while( parser.match('=') ); |
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1713 int nEquals = parser.currentIndex() - start; |
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1714 if( !parser.match('[') ) |
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1715 return parser.failure(null); |
714 | 1716 EndOfLine(); |
104
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1717 start = parser.currentIndex(); |
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1718 while( !LongBracketsEnd(nEquals) ) { |
714 | 1719 if( !(EndOfLine() || parser.anyChar()) ) |
104
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1720 throw parser.exception("Unclosed long string"); |
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1721 } |
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1722 String s = parser.text.substring( start, parser.currentIndex() - nEquals - 2 ); |
714 | 1723 String rtns = parser.sb().toString(); |
1724 parser.sb().setLength(0); | |
1725 Expr exp = constExpStr(s); | |
1726 if( rtns.length() > 0 ) | |
1727 exp.add(rtns); | |
1728 return parser.success(exp); | |
6
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1729 } |
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1730 |
714 | 1731 private Expr QuotedString(char quote) throws ParseException { |
104
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1732 parser.begin(); |
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1733 if( !parser.match(quote) ) |
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1734 return parser.failure(null); |
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1735 StringBuilder buf = new StringBuilder(); |
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1736 while( !parser.match(quote) ) { |
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1737 Character c = EscSeq(); |
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1738 if( c != null ) { |
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1739 buf.append(c); |
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1740 } else { |
271
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1741 if( parser.test('\r') || parser.test('\n') || !parser.anyChar() ) |
104
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1742 throw parser.exception("Unclosed string"); |
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1743 buf.append(parser.lastChar()); |
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1744 } |
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1745 } |
714 | 1746 return parser.success(constExpStr(buf.toString())); |
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1747 } |
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1748 |
104
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1749 private Character EscSeq() { |
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1750 parser.begin(); |
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1751 if( !parser.match('\\') ) |
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1752 return parser.failure(null); |
155
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1753 if( parser.match('a') ) return parser.success('\u0007'); |
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1754 if( parser.match('b') ) return parser.success('\b'); |
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1755 if( parser.match('f') ) return parser.success('\f'); |
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1756 if( parser.match('n') ) return parser.success('\n'); |
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1757 if( parser.match('r') ) return parser.success('\r'); |
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1758 if( parser.match('t') ) return parser.success('\t'); |
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1759 if( parser.match('v') ) return parser.success('\u000b'); |
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1760 if( parser.match('\\') ) return parser.success('\\'); |
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1761 if( parser.match('"') ) return parser.success('"'); |
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1762 if( parser.match('\'') ) return parser.success('\''); |
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|
1763 int start = parser.currentIndex(); |
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1764 if( parser.match('x') && HexDigit() && HexDigit() ) |
155
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1765 return parser.success((char)Integer.parseInt(parser.textFrom(start+1),16)); |
763 | 1766 if( parser.match('u') && HexDigit() && HexDigit() && HexDigit() && HexDigit() ) |
1767 return parser.success((char)Integer.parseInt(parser.textFrom(start+1),16)); | |
104
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1768 if( Digit() ) { |
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|
1769 if( Digit() ) Digit(); // optional |
155
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1770 return parser.success((char)Integer.parseInt(parser.textFrom(start))); |
104
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|
1771 } |
684 | 1772 if( MatchEndOfLine() ) { |
271
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1773 return parser.success('\n'); |
679
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1774 } |
104
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|
1775 return parser.failure(null); |
14
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whitespace handling;
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diff
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|
1776 } |
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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|
1777 |
679
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|
1778 private void Spaces() throws ParseException { |
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|
1779 while( parser.anyOf(" \t") || Comment() || ContinueOnNextLine() ); |
14
2ddf85634d20
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|
1780 } |
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1781 |
104
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1782 private boolean ContinueOnNextLine() { |
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|
1783 parser.begin(); |
700 | 1784 if( parser.match('\\') && EndOfLine() ) { |
1785 parser.upSb(); | |
1786 return parser.success(); | |
1787 } else | |
1788 return parser.failure(); | |
7
bca8fc5d928b
work on expressions
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diff
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1789 } |
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1790 |
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1791 private boolean Comment() throws ParseException { |
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1792 if( LongComment() ) |
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1793 return true; |
104
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1794 if( parser.match("--") ) { |
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1795 while( parser.noneOf("\r\n") ); |
247
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1796 return true; |
104
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1797 } |
247
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1798 return false; |
18
3971113699b8
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1799 } |
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1800 |
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1801 private boolean LongComment() throws ParseException { |
104
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1802 parser.begin(); |
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1803 if( !parser.match("--[") ) |
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1804 return parser.failure(); |
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1805 int start = parser.currentIndex(); |
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1806 while( parser.match('=') ); |
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1807 int nEquals = parser.currentIndex() - start; |
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1808 if( !parser.match('[') ) |
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1809 return parser.failure(); |
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1810 while( !LongBracketsEnd(nEquals) ) { |
679
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1811 if( !(EndOfLine() || parser.anyChar()) ) |
104
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1812 throw parser.exception("Unclosed comment"); |
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1813 } |
679
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1814 parser.upSb(); |
104
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1815 return parser.success(); |
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1816 } |
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1817 |
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1818 private boolean LongBracketsEnd(int nEquals) { |
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1819 parser.begin(); |
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1820 if( !parser.match(']') ) |
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1821 return parser.failure(); |
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1822 while( nEquals-- > 0 ) { |
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1823 if( !parser.match('=') ) |
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1824 return parser.failure(); |
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1825 } |
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1826 if( !parser.match(']') ) |
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1827 return parser.failure(); |
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1828 return parser.success(); |
12
9cea1aea5eef
CmdLine can run files
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1829 } |
9cea1aea5eef
CmdLine can run files
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1830 |
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1831 |
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1832 |
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|
1833 private class ParseList extends ArrayList { |
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1834 |
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1835 void addNewLines() { |
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1836 if( parser.sb().length() > 0 ) { |
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1837 add( parser.sb().toString() ); |
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1838 parser.sb().setLength(0); |
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1839 /* |
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1840 if( parser.sourceName.equals("stdin") ) { |
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1841 StringWriter sw = new StringWriter(); |
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1842 new Throwable().printStackTrace(new PrintWriter(sw,true)); |
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1843 // add(sw.toString()); |
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1844 } |
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1845 */ |
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1846 } |
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1847 } |
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1848 |
1093
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1849 void prependNewLines() { |
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1850 if( parser.sb().length() > 0 ) { |
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1851 add( 0, parser.sb().toString() ); |
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1852 parser.sb().setLength(0); |
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1853 } |
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1854 } |
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1855 |
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1856 ParseList() { |
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1857 addNewLines(); |
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1858 } |
677 | 1859 |
1860 @Override public boolean add(Object obj) { | |
1861 if( obj instanceof List ) throw new RuntimeException(); | |
1862 return super.add(obj); | |
1863 } | |
1864 | |
1865 @Override public void add(int index,Object obj) { | |
1866 if( obj instanceof List ) throw new RuntimeException(); | |
1867 super.add(index,obj); | |
1868 } | |
1869 | |
1870 @Override public String toString() { | |
1871 StringBuilder sb = new StringBuilder(); | |
1872 for( Object o : this ) { | |
1873 sb.append( o.toString() ); | |
1874 } | |
1875 return sb.toString(); | |
1876 } | |
1877 } | |
1878 | |
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1879 |
676 | 1880 private static AtomicInteger classCounter = new AtomicInteger(); |
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1881 |
674 | 1882 private enum Val { SINGLE, ARRAY } |
1883 | |
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1884 private class Expr extends ParseList { |
674 | 1885 final Val valType; |
649
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1886 final boolean isStmt; |
674 | 1887 |
1888 Expr(Val valType,boolean isStmt) { | |
1889 this.valType = valType; | |
649
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1890 this.isStmt = isStmt; |
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1891 } |
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1892 |
674 | 1893 Expr single() { |
1894 if( valType==Val.SINGLE ) | |
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1895 return this; |
674 | 1896 Expr exp = new Expr(Val.SINGLE,isStmt); |
677 | 1897 exp.add( valType==Val.ARRAY ? "LuanImpl.first(" : "Luan.first(" ); |
1898 exp.addAll( this ); | |
1899 exp.add( ")" ); | |
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1900 return exp; |
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1901 } |
674 | 1902 |
1903 Expr array() { | |
1904 if( valType==Val.ARRAY ) | |
1905 return this; | |
1906 Expr exp = new Expr(Val.ARRAY,isStmt); | |
1907 if( valType==Val.SINGLE ) { | |
677 | 1908 exp.add( "new Object[]{" ); |
1909 exp.addAll( this ); | |
1910 exp.add( "}" ); | |
674 | 1911 } else { |
677 | 1912 exp.add( "Luan.array(" ); |
1913 exp.addAll( this ); | |
1914 exp.add( ")" ); | |
674 | 1915 } |
1916 return exp; | |
1917 } | |
1918 | |
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1919 } |
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1920 |
674 | 1921 private Expr expString(List<Expr> list) { |
1922 Expr exp = new Expr(Val.ARRAY,false); | |
652
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1923 switch(list.size()) { |
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1924 case 0: |
677 | 1925 exp.add("LuanFunction.NOTHING"); |
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1926 return exp; |
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1927 case 1: |
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1928 return list.get(0); |
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1929 default: |
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1930 int lastI = list.size() - 1; |
677 | 1931 exp.add( "new Object[]{" ); |
652
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1932 for( int i=0; i<lastI; i++ ) { |
677 | 1933 exp.addAll( list.get(i).single() ); |
1934 exp.add( "," ); | |
652
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1935 } |
674 | 1936 Expr last = list.get(lastI); |
1937 if( last.valType==Val.SINGLE ) { | |
677 | 1938 exp.addAll( last ); |
1939 exp.add( "}" ); | |
652
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1940 } else { |
677 | 1941 exp.add( "}" ); |
1942 exp.add( 0, "LuanImpl.concatArgs(" ); | |
1943 exp.add( "," ); | |
1944 exp.addAll( last ); | |
1945 exp.add( ")" ); | |
652
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1946 } |
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1947 return exp; |
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1948 } |
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1949 } |
657 | 1950 |
679
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1951 private class Stmts extends ParseList { |
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1952 boolean hasReturn = false; |
651
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1953 } |
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1954 |
677 | 1955 private Class toFnClass(Stmts stmts,List<UpSym> upValueSymbols) { |
676 | 1956 String className = "EXP" + classCounter.incrementAndGet(); |
678 | 1957 String classCode = toFnString(stmts,upValueSymbols,className); |
1958 try { | |
1959 //System.out.println(parser.sourceName); | |
1960 //System.out.println(classCode); | |
1961 return LuanJavaCompiler.compile("luan.impl."+className,parser.sourceName,classCode); | |
1962 } catch(ClassNotFoundException e) { | |
1963 throw new RuntimeException(e); | |
1964 } | |
1965 } | |
1966 | |
1967 private String toFnString(Stmts stmts,List<UpSym> upValueSymbols) { | |
1968 String className = "EXP" + classCounter.incrementAndGet(); | |
1969 return toFnString(stmts,upValueSymbols,className); | |
1970 } | |
1971 | |
1972 private String toFnString(Stmts stmts,List<UpSym> upValueSymbols,String className) { | |
1973 if( !stmts.hasReturn ) | |
679
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1974 stmts.add( "\nreturn LuanFunction.NOTHING;" ); |
678 | 1975 return "" |
679
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1976 +"package luan.impl; " |
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1977 +"import luan.Luan; " |
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1978 +"import luan.LuanFunction; " |
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1979 +"import luan.LuanState; " |
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1980 +"import luan.LuanJava; " |
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1981 +"import luan.LuanException; " |
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1982 +"import luan.modules.PackageLuan; " |
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1983 |
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1984 +"public class " + className +" extends Closure { " |
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1985 +"public "+className+"(LuanJava java) throws LuanException { " |
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1986 +"super("+upValueSymbols.size()+",java); " |
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1987 + init(upValueSymbols) |
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1988 +"} " |
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1989 |
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1990 +"@Override public Object doCall(LuanState luan,Object[] args) throws LuanException { " |
688 | 1991 +"final Pointer[] parentUpValues = upValues; " |
679
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1992 +"Object t; " |
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1993 +"Object[] a; " |
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1994 + stmts |
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1995 +"\n} " |
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1996 +"}\n" |
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1997 ; |
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1998 } |
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1999 |
681 | 2000 private Expr toFnExp(Stmts stmt,List<UpSym> upValueSymbols,String name) { |
679
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2001 stmt.addNewLines(); |
678 | 2002 if( !stmt.hasReturn ) |
679
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2003 stmt.add( "return LuanFunction.NOTHING; " ); |
674 | 2004 Expr exp = new Expr(Val.SINGLE,false); |
677 | 2005 exp.add( "" |
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2006 +"new Closure("+upValueSymbols.size()+",ljava) { " |
679
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2007 +"{ " |
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2008 + init(upValueSymbols) |
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2009 +"} " |
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2010 +"@Override public Object doCall(LuanState luan,Object[] args) throws LuanException { " |
681 | 2011 ); |
2012 if( name != null ) { | |
2013 exp.add( "" | |
2014 +"return _" + name + "(luan,args); " | |
2015 +"} " | |
2016 +"private Object _" + name + "(LuanState luan,Object[] args) throws LuanException { " | |
2017 ); | |
2018 } | |
2019 exp.add( "" | |
688 | 2020 +"final Pointer[] parentUpValues = upValues; " |
679
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2021 +"Object t; " |
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2022 +"Object[] a; " |
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2023 ); |
677 | 2024 exp.addAll( stmt ); |
2025 exp.add( "" | |
679
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2026 +"} " |
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2027 +"} " |
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2028 ); |
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2029 return exp; |
665 | 2030 } |
2031 | |
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2032 private static String init(List<UpSym> upValueSymbols) { |
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2033 StringBuilder sb = new StringBuilder(); |
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2034 for( UpSym upSym : upValueSymbols ) { |
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2035 sb.append( upSym.init() ); |
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2036 } |
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2037 return sb.toString(); |
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2038 } |
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2039 |
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2040 } |