Mercurial Hosting > luan
annotate core/src/luan/impl/LuanParser.java @ 676:1b6a0dc0ea16
minor
author | Franklin Schmidt <fschmidt@gmail.com> |
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date | Tue, 12 Apr 2016 19:44:32 -0600 |
parents | d95caff8ba8c |
children | 5c85d38659db |
rev | line source |
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166
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1 package luan.impl; |
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2 |
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3 import java.util.Set; |
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4 import java.util.HashSet; |
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5 import java.util.Arrays; |
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6 import java.util.List; |
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7 import java.util.ArrayList; |
676 | 8 import java.util.concurrent.atomic.AtomicInteger; |
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9 import luan.Luan; |
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10 import luan.LuanState; |
503 | 11 import luan.LuanTable; |
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12 import luan.modules.PackageLuan; |
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13 |
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15 final class LuanParser { |
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16 |
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17 private interface Sym { |
674 | 18 public Expr exp(); |
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19 } |
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20 |
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21 private int symCounter = 0; |
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22 |
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23 private class LocalSym implements Sym { |
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24 final String name; |
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25 final String javaName; |
671 | 26 boolean isPointer = false; |
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27 |
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28 LocalSym(String name) { |
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29 this.name = name; |
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30 this.javaName = name + "_" + (++symCounter); |
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31 } |
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32 |
674 | 33 Stmts declaration(Expr value) { |
34 Stmts stmt = new Stmts(); | |
671 | 35 if( value==null ) { |
36 stmt.list.add( new Object() { | |
37 @Override public String toString() { | |
38 if( !isPointer ) | |
39 return "Object " + javaName + ";\n"; | |
40 else | |
41 return "final Pointer " + javaName + " = new Pointer();\n"; | |
42 } | |
43 } ); | |
44 } else { | |
674 | 45 if( value.valType != Val.SINGLE ) throw new RuntimeException(); |
671 | 46 stmt.list.add( new Object() { |
47 @Override public String toString() { | |
48 if( !isPointer ) | |
49 return "Object " + javaName + " = "; | |
50 else | |
51 return "final Pointer " + javaName + " = new Pointer("; | |
52 } | |
53 } ); | |
54 stmt.list.addAll(value.list); | |
55 stmt.list.add( new Object() { | |
56 @Override public String toString() { | |
57 if( !isPointer ) | |
58 return ";\n"; | |
59 else | |
60 return ");\n"; | |
61 } | |
62 } ); | |
63 } | |
64 return stmt; | |
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65 } |
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66 |
674 | 67 @Override public Expr exp() { |
68 Expr exp = new Expr(Val.SINGLE,false); | |
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69 exp.list.add( new Object() { |
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70 @Override public String toString() { |
671 | 71 if( !isPointer ) |
72 return javaName; | |
73 else | |
74 return javaName + ".o"; | |
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75 } |
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76 } ); |
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77 return exp; |
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78 } |
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79 } |
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80 |
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81 private class UpSym implements Sym { |
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82 final String name; |
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83 final int i; |
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84 final String value; |
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85 |
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86 UpSym(String name,int i,String value) { |
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87 this.name = name; |
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88 this.i = i; |
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89 this.value = value; |
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90 } |
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91 |
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92 String init() { |
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93 return "upValues[" + i + "] = " + value + ";\n"; |
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94 } |
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95 |
674 | 96 @Override public Expr exp() { |
97 Expr exp = new Expr(Val.SINGLE,false); | |
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98 exp.list.add( new Object() { |
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99 @Override public String toString() { |
671 | 100 return "upValues[" + i + "].o"; |
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101 } |
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102 } ); |
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103 return exp; |
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104 } |
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105 } |
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106 |
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107 private final class Frame { |
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108 final Frame parent; |
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109 final List<LocalSym> symbols = new ArrayList<LocalSym>(); |
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110 int loops = 0; |
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111 boolean isVarArg = false; |
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112 final List<UpSym> upValueSymbols = new ArrayList<UpSym>(); |
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113 |
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114 Frame() { |
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115 this.parent = null; |
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116 } |
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117 |
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118 Frame(Frame parent) { |
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119 this.parent = parent; |
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120 } |
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121 |
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122 LocalSym addLocalSym(String name) { |
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123 LocalSym sym = new LocalSym(name); |
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124 symbols.add(sym); |
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125 return sym; |
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126 } |
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127 |
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128 UpSym addUpSym(String name,String value) { |
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129 UpSym sym = new UpSym( name, upValueSymbols.size(), value ); |
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130 upValueSymbols.add(sym); |
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131 return sym; |
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132 } |
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133 |
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134 LocalSym getLocalSym(String name) { |
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135 int i = symbols.size(); |
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136 while( --i >= 0 ) { |
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137 LocalSym sym = symbols.get(i); |
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138 if( sym.name.equals(name) ) |
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139 return sym; |
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140 } |
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141 return null; |
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142 } |
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143 |
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144 UpSym getUpSym(String name) { |
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145 for( UpSym upSym : upValueSymbols ) { |
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146 if( upSym.name.equals(name) ) |
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147 return upSym; |
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148 } |
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149 for( Frame f=parent; f!=null; f=f.parent ) { |
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150 LocalSym sym = f.getLocalSym(name); |
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151 if( sym != null ) { |
671 | 152 sym.isPointer = true; |
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153 return addUpSym(name,sym.javaName); |
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154 } |
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155 } |
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156 return null; |
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157 } |
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158 |
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159 Sym getSym(String name) { |
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160 Sym sym = getLocalSym(name); |
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161 return sym != null ? sym : getUpSym(name); |
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162 } |
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163 |
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164 } |
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165 |
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166 private static class In { |
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167 static final In NOTHING = new In(false,false); |
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168 |
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169 final boolean parens; |
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170 final boolean template; |
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171 |
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172 private In(boolean parens,boolean template) { |
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173 this.parens = parens; |
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174 this.template = template; |
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175 } |
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176 |
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177 In parens() { |
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178 return parens ? this : new In(true,false); |
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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(false,true); |
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183 } |
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184 } |
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185 |
645 | 186 // final LuanSource source; |
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187 private Frame frame; |
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188 private final Parser parser; |
674 | 189 private final Stmts top = new Stmts(); |
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190 |
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191 LuanParser(String sourceName,String sourceText) { |
645 | 192 // this.source = source; |
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193 this.frame = new Frame(); |
645 | 194 this.parser = new Parser(sourceName,sourceText); |
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195 } |
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196 |
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197 void addVar(String name) { |
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198 UpSym upSym = frame.addUpSym( "-ADDED-" ,"new Pointer()"); |
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199 if( name != null ) { |
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200 LocalSym sym = frame.addLocalSym( name ); |
671 | 201 sym.isPointer = true; |
202 top.list.add( "final Pointer " + sym.javaName + " = upValues[" + upSym.i + "];\n" ); | |
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203 } |
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204 } |
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205 |
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206 private int symbolsSize() { |
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207 return frame.symbols.size(); |
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208 } |
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209 |
674 | 210 private Stmts addSymbol(String name,Expr value) { |
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211 final LocalSym sym = frame.addLocalSym(name); |
671 | 212 return sym.declaration(value); |
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213 } |
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214 |
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215 private Sym getSym(String name) { |
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216 return frame.getSym(name); |
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217 } |
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218 |
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219 private void popSymbols(int n) { |
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220 List<LocalSym> symbols = frame.symbols; |
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221 while( n-- > 0 ) { |
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222 symbols.remove(symbols.size()-1); |
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223 } |
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224 } |
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225 |
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226 private void incLoops() { |
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227 frame.loops++; |
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228 } |
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229 |
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230 private void decLoops() { |
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231 frame.loops--; |
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232 } |
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233 |
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234 private <T> T required(T t) throws ParseException { |
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235 if( t==null ) |
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236 throw parser.exception(); |
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237 return t; |
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238 } |
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239 |
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240 private <T> T required(T t,String msg) throws ParseException { |
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241 if( t==null ) |
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242 throw parser.exception(msg); |
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243 return t; |
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244 } |
674 | 245 |
246 private Class newFnClass(int start,Stmts stmt) { | |
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247 if( !stmt.hasReturn ) |
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248 stmt.list.add( "return LuanFunction.NOTHING;\n" ); |
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249 return toFnClass( stmt, frame.upValueSymbols ); |
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250 } |
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251 |
674 | 252 private Expr newFnExpStr(int start,Stmts stmt) { |
665 | 253 if( !stmt.hasReturn ) |
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254 stmt.list.add( "return LuanFunction.NOTHING;\n" ); |
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255 return toFnExpStr( stmt, frame.upValueSymbols ); |
665 | 256 } |
257 | |
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258 Class Expression() throws ParseException { |
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259 Spaces(In.NOTHING); |
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260 int start = parser.begin(); |
674 | 261 Expr expr = ExprZ(In.NOTHING); |
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262 if( expr != null && parser.endOfInput() ) { |
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263 top.list.add( "return " ); |
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264 top.list.addAll( expr.list ); |
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265 top.list.add( ";\n" ); |
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266 top.hasReturn = true; |
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267 return parser.success(newFnClass(start,top)); |
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268 } |
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269 return parser.failure(null); |
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270 } |
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271 |
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272 Class RequiredModule() throws ParseException { |
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273 Spaces(In.NOTHING); |
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274 int start = parser.begin(); |
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275 frame.isVarArg = true; |
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276 top.list.add( "final Object[] varArgs = LuanImpl.varArgs(args,0);\n" ); |
674 | 277 Stmts block = RequiredBlock(); |
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278 top.list.addAll( block.list ); |
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279 top.hasReturn = block.hasReturn; |
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280 if( parser.endOfInput() ) |
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281 return parser.success(newFnClass(start,top)); |
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282 throw parser.exception(); |
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283 } |
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284 |
674 | 285 private Stmts RequiredBlock() throws ParseException { |
286 Stmts stmts = new Stmts(); | |
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287 int stackStart = symbolsSize(); |
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288 boolean isReturn = Stmt(stmts); |
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289 while( !isReturn && StmtSep(stmts) ) { |
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290 Spaces(In.NOTHING); |
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291 isReturn = Stmt(stmts); |
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292 } |
668 | 293 while( StmtSep(null) ) |
294 Spaces(In.NOTHING); | |
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295 int stackEnd = symbolsSize(); |
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296 popSymbols( stackEnd - stackStart ); |
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297 stmts.hasReturn = isReturn; |
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298 return stmts; |
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299 } |
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300 |
674 | 301 private boolean StmtSep(Stmts stmts) throws ParseException { |
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302 parser.begin(); |
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303 if( parser.match( ';' ) ) |
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304 return parser.success(); |
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305 if( EndOfLine() ) |
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306 return parser.success(); |
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307 if( stmts != null ) { |
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308 // parser.rollback(); |
674 | 309 Stmts stmt = TemplateStmt(); |
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310 if( stmt != null ) { |
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311 stmts.list.addAll(stmt.list); |
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312 return parser.success(); |
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313 } |
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314 } |
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315 return parser.failure(); |
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316 } |
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317 |
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318 private boolean EndOfLine() { |
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319 return parser.match( "\r\n" ) || parser.match( '\r' ) || parser.match( '\n' ); |
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320 } |
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321 |
674 | 322 private boolean Stmt(Stmts stmts) throws ParseException { |
323 Stmts stmt; | |
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324 if( (stmt=ReturnStmt()) != null ) { |
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325 stmts.list.addAll(stmt.list); |
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326 return true; |
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327 } |
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328 if( (stmt=FunctionStmt()) != null |
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329 || (stmt=LocalStmt()) != null |
661
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330 || (stmt=LocalFunctionStmt()) != null |
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331 || (stmt=BreakStmt()) != null |
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332 || (stmt=ForStmt()) != null |
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333 || (stmt=DoStmt()) != null |
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334 || (stmt=WhileStmt()) != null |
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335 || (stmt=RepeatStmt()) != null |
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336 || (stmt=IfStmt()) != null |
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337 || (stmt=SetStmt()) != null |
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338 || (stmt=ExpressionsStmt()) != null |
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339 ) { |
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340 stmts.list.addAll(stmt.list); |
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341 } |
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342 return false; |
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343 } |
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344 |
674 | 345 private Expr indexExpStr(Expr exp1,Expr exp2) { |
346 Expr exp = new Expr(Val.SINGLE,false); | |
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347 exp.list.add( "luan.index(" ); |
674 | 348 exp.list.addAll( exp1.single().list ); |
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349 exp.list.add( "," ); |
674 | 350 exp.list.addAll( exp2.single().list ); |
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351 exp.list.add( ")" ); |
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352 return exp; |
654 | 353 } |
354 | |
674 | 355 private Expr callExpStr(Expr fn,Expr args) { |
356 Expr exp = new Expr(null,true); | |
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357 exp.list.add( "Luan.checkFunction(" ); |
674 | 358 exp.list.addAll( fn.single().list ); |
359 exp.list.add( ").call(luan," ); | |
360 exp.list.addAll( args.array().list ); | |
361 exp.list.add( ")" ); | |
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362 return exp; |
654 | 363 } |
364 | |
674 | 365 private Stmts TemplateStmt() throws ParseException { |
366 Expr exprs = TemplateExpressions(In.NOTHING); | |
369
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367 if( exprs == null ) |
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368 return null; |
674 | 369 Expr requireCall = new Expr(Val.SINGLE,false); |
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370 requireCall.list.add( "PackageLuan.require(luan,\"luan:Io\")" ); |
674 | 371 Expr stdoutExp = indexExpStr( requireCall.single(), constExpStr("stdout") ); |
372 Expr writeExp = indexExpStr( stdoutExp, constExpStr("write") ); | |
373 Expr writeCall = callExpStr( writeExp, exprs ); | |
374 Stmts stmt = new Stmts(); | |
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375 stmt.list.addAll( writeCall.list ); |
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376 stmt.list.add( ";\n" ); |
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377 return stmt; |
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378 } |
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379 |
674 | 380 private Expr TemplateExpressions(In in) throws ParseException { |
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381 if( in.template ) |
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382 return null; |
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383 int start = parser.begin(); |
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384 if( !parser.match( "%>" ) ) |
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385 return parser.failure(null); |
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386 EndOfLine(); |
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387 In inTemplate = in.template(); |
674 | 388 List<Expr> builder = new ArrayList<Expr>(); |
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389 while(true) { |
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390 if( parser.match( "<%=" ) ) { |
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391 Spaces(inTemplate); |
654 | 392 builder.add( RequiredExpr(inTemplate) ); |
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393 RequiredMatch( "%>" ); |
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394 } else if( parser.match( "<%" ) ) { |
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395 Spaces(inTemplate); |
654 | 396 return parser.success(expString(builder)); |
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397 } else { |
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398 int i = parser.currentIndex(); |
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399 do { |
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400 if( parser.match( "%>" ) ) |
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401 throw parser.exception("'%>' unexpected"); |
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402 if( !parser.anyChar() ) |
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403 throw parser.exception("Unclosed template expression"); |
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404 } while( !parser.test( "<%" ) ); |
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405 String match = parser.textFrom(i); |
654 | 406 builder.add( constExpStr(match) ); |
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407 } |
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408 } |
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409 } |
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410 |
674 | 411 private Stmts ReturnStmt() throws ParseException { |
645 | 412 parser.begin(); |
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413 if( !Keyword("return",In.NOTHING) ) |
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414 return parser.failure(null); |
674 | 415 Expr exprs = ExpStringList(In.NOTHING); |
416 Stmts stmt = new Stmts(); | |
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417 stmt.list.add( "return " ); |
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418 if( exprs != null ) |
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419 stmt.list.addAll( exprs.list ); |
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420 else |
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421 stmt.list.add( "LuanFunction.NOTHING" ); |
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422 stmt.list.add( ";\n" ); |
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423 return parser.success( stmt ); |
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424 } |
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425 |
674 | 426 private Stmts FunctionStmt() throws ParseException { |
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427 parser.begin(); |
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428 if( !Keyword("function",In.NOTHING) ) |
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429 return parser.failure(null); |
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430 |
645 | 431 parser.currentIndex(); |
432 Var var = nameVar(RequiredName(In.NOTHING)); | |
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433 while( parser.match( '.' ) ) { |
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434 Spaces(In.NOTHING); |
674 | 435 Expr exp = NameExpr(In.NOTHING); |
636 | 436 if( exp==null ) |
437 return parser.failure(null); | |
656 | 438 var = indexVar( var.exp(), exp ); |
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439 } |
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440 |
674 | 441 Expr fnDef = RequiredFunction(In.NOTHING); |
665 | 442 return parser.success( var.set(fnDef) ); |
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443 } |
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444 |
674 | 445 private Stmts LocalFunctionStmt() throws ParseException { |
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446 parser.begin(); |
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447 if( !(Keyword("local",In.NOTHING) && Keyword("function",In.NOTHING)) ) |
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448 return parser.failure(null); |
674 | 449 Stmts stmt = new Stmts(); |
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450 String name = RequiredName(In.NOTHING); |
671 | 451 stmt.list.addAll( addSymbol(name,null).list ); |
674 | 452 Expr fnDef = RequiredFunction(In.NOTHING); |
671 | 453 stmt.list.addAll( nameVar(name).set(fnDef).list ); |
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454 /* |
661
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455 Settable s = new SetLocalVar(symbolsSize()-1); |
674 | 456 Stmts stmt = new Stmts(); |
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457 stmt.list.add( settableToString(s) ); |
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458 stmt.list.add( ".set(luan," ); |
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459 stmt.list.addAll( fnDef.list ); |
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460 stmt.list.add( ");\n" ); |
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461 */ |
666
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462 return parser.success( stmt ); |
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463 } |
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464 |
674 | 465 private Stmts BreakStmt() throws ParseException { |
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466 parser.begin(); |
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467 if( !Keyword("break",In.NOTHING) ) |
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468 return parser.failure(null); |
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469 if( frame.loops <= 0 ) |
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470 throw parser.exception("'break' outside of loop"); |
674 | 471 Stmts stmt = new Stmts(); |
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472 stmt.list.add( "break;\n" ); |
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473 return parser.success( stmt ); |
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474 } |
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475 |
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476 int forCounter = 0; |
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477 |
674 | 478 private Stmts ForStmt() throws ParseException { |
645 | 479 parser.begin(); |
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480 int stackStart = symbolsSize(); |
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481 if( !Keyword("for",In.NOTHING) ) |
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482 return parser.failure(null); |
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483 List<String> names = RequiredNameList(In.NOTHING); |
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484 if( !Keyword("in",In.NOTHING) ) |
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485 return parser.failure(null); |
674 | 486 Expr expr = RequiredExpr(In.NOTHING).single(); |
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487 RequiredKeyword("do",In.NOTHING); |
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488 |
654 | 489 String fnVar = "fn"+ ++forCounter; |
674 | 490 Expr fnExp = new Expr(null,false); |
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491 fnExp.list.add( fnVar + ".call(luan)" ); |
674 | 492 Stmts stmt = new Stmts(); |
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493 stmt.list.add( "" |
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494 +"LuanFunction "+fnVar+" = Luan.checkFunction(" |
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495 ); |
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496 stmt.list.addAll( expr.list ); |
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497 stmt.list.add( ");\n" ); |
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498 stmt.list.add( "while(true) {\n" ); |
671 | 499 stmt.list.addAll( makeLocalSetStmt(names,fnExp).list ); |
670
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500 stmt.list.add( "if( " ); |
671 | 501 stmt.list.addAll( nameVar(names.get(0)).exp().list ); |
666
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502 stmt.list.add( "==null ) break;\n" ); |
674 | 503 Stmts loop = RequiredLoopBlock(); |
670
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504 RequiredKeyword("end",In.NOTHING); |
666
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505 stmt.list.addAll( loop.list ); |
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506 stmt.list.add( "}\n" ); |
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507 popSymbols( symbolsSize() - stackStart ); |
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508 return parser.success(stmt); |
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509 } |
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510 |
674 | 511 private Stmts DoStmt() throws ParseException { |
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512 parser.begin(); |
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513 if( !Keyword("do",In.NOTHING) ) |
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514 return parser.failure(null); |
674 | 515 Stmts stmt = RequiredBlock(); |
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516 RequiredKeyword("end",In.NOTHING); |
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517 return parser.success(stmt); |
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518 } |
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519 |
674 | 520 private Stmts LocalStmt() throws ParseException { |
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521 parser.begin(); |
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522 if( !Keyword("local",In.NOTHING) ) |
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523 return parser.failure(null); |
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524 List<String> names = NameList(In.NOTHING); |
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525 if( names==null ) { |
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526 if( Keyword("function",In.NOTHING) ) |
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527 return parser.failure(null); // handled later |
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528 throw parser.exception("Invalid local statement"); |
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529 } |
674 | 530 Stmts stmt = new Stmts(); |
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531 if( parser.match( '=' ) ) { |
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532 Spaces(In.NOTHING); |
674 | 533 Expr values = ExpStringList(In.NOTHING); |
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534 if( values==null ) |
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535 throw parser.exception("Expressions expected"); |
671 | 536 stmt.list.addAll( makeLocalSetStmt(names,values).list ); |
537 } else { | |
674 | 538 Expr value = new Expr(Val.SINGLE,false); |
671 | 539 value.list.add( "null" ); |
670
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540 for( String name : names ) { |
671 | 541 stmt.list.addAll( addSymbol(name,value).list ); |
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542 } |
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543 } |
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544 return parser.success(stmt); |
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545 } |
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546 |
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547 private List<String> RequiredNameList(In in) throws ParseException { |
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548 parser.begin(); |
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549 List<String> names = NameList(in); |
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550 if( names==null ) |
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551 throw parser.exception("Name expected"); |
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552 return parser.success(names); |
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553 } |
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554 |
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555 private List<String> NameList(In in) throws ParseException { |
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556 String name = Name(in); |
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557 if( name==null ) |
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558 return null; |
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559 List<String> names = new ArrayList<String>(); |
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560 names.add(name); |
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561 while( (name=anotherName(in)) != null ) { |
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562 names.add(name); |
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563 } |
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564 return names; |
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565 } |
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566 |
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567 private String anotherName(In in) throws ParseException { |
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568 parser.begin(); |
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569 if( !parser.match( ',' ) ) |
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570 return parser.failure(null); |
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571 Spaces(in); |
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572 String name = Name(in); |
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573 if( name==null ) |
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574 return parser.failure(null); |
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575 return parser.success(name); |
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576 } |
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577 |
674 | 578 private Stmts WhileStmt() throws ParseException { |
645 | 579 parser.begin(); |
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580 if( !Keyword("while",In.NOTHING) ) |
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581 return parser.failure(null); |
674 | 582 Expr cnd = RequiredExpr(In.NOTHING).single(); |
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583 RequiredKeyword("do",In.NOTHING); |
674 | 584 Stmts loop = RequiredLoopBlock(); |
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585 RequiredKeyword("end",In.NOTHING); |
674 | 586 Stmts stmt = new Stmts(); |
666
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587 stmt.list.add( "while( Luan.checkBoolean(" ); |
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588 stmt.list.addAll( cnd.list ); |
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589 stmt.list.add( ") ) {\n" ); |
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590 stmt.list.addAll( loop.list ); |
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591 stmt.list.add( "}\n" ); |
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592 return parser.success( stmt ); |
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593 } |
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594 |
674 | 595 private Stmts RepeatStmt() throws ParseException { |
645 | 596 parser.begin(); |
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597 if( !Keyword("repeat",In.NOTHING) ) |
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598 return parser.failure(null); |
674 | 599 Stmts loop =RequiredLoopBlock(); |
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600 RequiredKeyword("until",In.NOTHING); |
674 | 601 Expr cnd = RequiredExpr(In.NOTHING).single(); |
602 Stmts stmt = new Stmts(); | |
666
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603 stmt.list.add( "do {\n" ); |
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604 stmt.list.addAll( loop.list ); |
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605 stmt.list.add( "} while( !Luan.checkBoolean(" ); |
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606 stmt.list.addAll( cnd.list ); |
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607 stmt.list.add( ") );\n" ); |
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608 return parser.success( stmt ); |
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609 } |
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610 |
674 | 611 private Stmts RequiredLoopBlock() throws ParseException { |
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612 incLoops(); |
674 | 613 Stmts stmt = RequiredBlock(); |
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614 decLoops(); |
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615 return stmt; |
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616 } |
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617 |
674 | 618 private Stmts IfStmt() throws ParseException { |
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619 parser.begin(); |
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620 if( !Keyword("if",In.NOTHING) ) |
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621 return parser.failure(null); |
674 | 622 Stmts stmt = new Stmts(); |
623 Expr cnd; | |
624 Stmts block; | |
625 cnd = RequiredExpr(In.NOTHING).single(); | |
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626 RequiredKeyword("then",In.NOTHING); |
653
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627 block = RequiredBlock(); |
666
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628 stmt.list.add( "if( Luan.checkBoolean(" ); |
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629 stmt.list.addAll( cnd.list ); |
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630 stmt.list.add( ") ) {\n" ); |
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631 stmt.list.addAll( block.list ); |
653
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632 while( Keyword("elseif",In.NOTHING) ) { |
674 | 633 cnd = RequiredExpr(In.NOTHING).single(); |
653
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634 RequiredKeyword("then",In.NOTHING); |
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635 block = RequiredBlock(); |
666
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636 stmt.list.add( "} else if( Luan.checkBoolean(" ); |
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637 stmt.list.addAll( cnd.list ); |
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638 stmt.list.add( ") ) {\n" ); |
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639 stmt.list.addAll( block.list ); |
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640 } |
653
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641 if( Keyword("else",In.NOTHING) ) { |
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|
642 block = RequiredBlock(); |
666
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643 stmt.list.add( "} else {\n" ); |
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644 stmt.list.addAll( block.list ); |
653
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645 } |
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652
diff
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|
646 RequiredKeyword("end",In.NOTHING); |
666
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647 stmt.list.add( "}\n" ); |
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648 return parser.success( stmt ); |
20
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649 } |
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650 |
674 | 651 private Stmts SetStmt() throws ParseException { |
104
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652 parser.begin(); |
660 | 653 List<Var> vars = new ArrayList<Var>(); |
654 Var v = SettableVar(); | |
655 if( v == null ) | |
104
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656 return parser.failure(null); |
660 | 657 vars.add(v); |
104
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658 while( parser.match( ',' ) ) { |
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659 Spaces(In.NOTHING); |
660 | 660 v = SettableVar(); |
661 if( v == null ) | |
104
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662 return parser.failure(null); |
660 | 663 vars.add(v); |
104
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664 } |
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|
665 if( !parser.match( '=' ) ) |
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666 return parser.failure(null); |
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667 Spaces(In.NOTHING); |
674 | 668 Expr values = ExpStringList(In.NOTHING); |
104
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669 if( values==null ) |
274
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670 // throw parser.exception("Expressions expected"); |
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671 return parser.failure(null); |
670
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669
diff
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672 return parser.success( makeSetStmt(vars,values) ); |
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parents:
669
diff
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|
673 } |
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669
diff
changeset
|
674 |
674 | 675 private Stmts makeSetStmt(List<Var> vars,Expr values) throws ParseException { |
660 | 676 int n = vars.size(); |
677 if( n == 1 ) | |
670
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parents:
669
diff
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|
678 return vars.get(0).set(values); |
674 | 679 Stmts stmt = new Stmts(); |
680 String varName = values.valType==Val.ARRAY ? "a" : "t"; | |
681 stmt.list.add( varName + " = " ); | |
666
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682 stmt.list.addAll( values.list ); |
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683 stmt.list.add( ";\n" ); |
674 | 684 Expr t = new Expr(values.valType,false); |
685 t.list.add( varName ); | |
686 t = t.single(); | |
666
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|
687 stmt.list.addAll( vars.get(0).set(t).list ); |
660 | 688 for( int i=1; i<n; i++ ) { |
666
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|
689 t.list.clear(); |
674 | 690 t.list.add( "LuanImpl.pick(" + varName + ","+i+")" ); |
666
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diff
changeset
|
691 stmt.list.addAll( vars.get(i).set(t).list ); |
660 | 692 } |
670
58ebfec6178b
all luan now compiles
Franklin Schmidt <fschmidt@gmail.com>
parents:
669
diff
changeset
|
693 return stmt; |
652
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
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|
694 } |
671 | 695 |
674 | 696 private Stmts makeLocalSetStmt(List<String> names,Expr values) throws ParseException { |
671 | 697 int n = names.size(); |
698 if( n == 1 ) | |
674 | 699 return addSymbol(names.get(0),values.single()); |
700 Stmts stmt = new Stmts(); | |
701 String varName = values.valType==Val.ARRAY ? "a" : "t"; | |
702 stmt.list.add( varName + " = " ); | |
671 | 703 stmt.list.addAll( values.list ); |
704 stmt.list.add( ";\n" ); | |
674 | 705 Expr t = new Expr(values.valType,false); |
706 t.list.add( varName ); | |
707 t = t.single(); | |
708 stmt.list.addAll( addSymbol(names.get(0),t).list ); | |
671 | 709 for( int i=1; i<n; i++ ) { |
710 t.list.clear(); | |
674 | 711 t.list.add( "LuanImpl.pick(" + varName + ","+i+")" ); |
671 | 712 stmt.list.addAll( addSymbol(names.get(i),t).list ); |
652
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
713 } |
671 | 714 return stmt; |
104
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parents:
99
diff
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|
715 } |
671 | 716 |
674 | 717 private Stmts ExpressionsStmt() throws ParseException { |
104
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parents:
99
diff
changeset
|
718 parser.begin(); |
674 | 719 Expr exp = ExprZ(In.NOTHING); |
651
140cc5191b7a
start compiling statements
Franklin Schmidt <fschmidt@gmail.com>
parents:
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diff
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|
720 if( exp != null && exp.isStmt ) { |
674 | 721 Stmts stmt = new Stmts(); |
722 if( exp.valType==Val.SINGLE ) { | |
666
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parents:
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diff
changeset
|
723 stmt.list.add( "LuanImpl.nop(" ); |
2f449ccf54d2
use lists to assemble source
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parents:
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diff
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|
724 stmt.list.addAll( exp.list ); |
2f449ccf54d2
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parents:
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diff
changeset
|
725 stmt.list.add( ")" ); |
2f449ccf54d2
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diff
changeset
|
726 } else { |
2f449ccf54d2
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parents:
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diff
changeset
|
727 stmt.list.addAll( exp.list ); |
2f449ccf54d2
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parents:
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diff
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|
728 } |
2f449ccf54d2
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parents:
665
diff
changeset
|
729 stmt.list.add( ";\n" ); |
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diff
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|
730 return parser.success( stmt ); |
651
140cc5191b7a
start compiling statements
Franklin Schmidt <fschmidt@gmail.com>
parents:
650
diff
changeset
|
731 } |
159
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parents:
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diff
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|
732 return parser.failure(null); |
104
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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733 } |
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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diff
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|
734 |
660 | 735 private Var SettableVar() throws ParseException { |
104
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parents:
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diff
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|
736 int start = parser.begin(); |
129
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diff
changeset
|
737 Var var = VarZ(In.NOTHING); |
660 | 738 if( var==null || !var.isSettable() ) |
155
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parents:
154
diff
changeset
|
739 return parser.failure(null); |
660 | 740 return parser.success( var ); |
104
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parents:
99
diff
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|
741 } |
754e6030c029
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parents:
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diff
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|
742 |
674 | 743 private Expr RequiredExpr(In in) throws ParseException { |
129
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744 parser.begin(); |
211
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fix parsing bug
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
209
diff
changeset
|
745 return parser.success(required(ExprZ(in),"Bad expression")); |
104
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parents:
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diff
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746 } |
754e6030c029
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parents:
99
diff
changeset
|
747 |
674 | 748 private Expr ExprZ(In in) throws ParseException { |
449 | 749 return OrExpr(in); |
19
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add GenericForStmt
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
18
diff
changeset
|
750 } |
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add GenericForStmt
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
18
diff
changeset
|
751 |
674 | 752 private Expr OrExpr(In in) throws ParseException { |
645 | 753 parser.begin(); |
674 | 754 Expr exp = AndExpr(in); |
104
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
755 if( exp==null ) |
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parents:
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diff
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|
756 return parser.failure(null); |
129
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parents:
128
diff
changeset
|
757 while( Keyword("or",in) ) { |
674 | 758 exp = exp.single(); |
759 Expr exp2 = required(RelExpr(in)).single(); | |
760 Expr newExp = new Expr(Val.SINGLE,true); | |
666
2f449ccf54d2
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Franklin Schmidt <fschmidt@gmail.com>
parents:
665
diff
changeset
|
761 newExp.list.add( "(LuanImpl.cnd(t = " ); |
2f449ccf54d2
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Franklin Schmidt <fschmidt@gmail.com>
parents:
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diff
changeset
|
762 newExp.list.addAll( exp.list ); |
2f449ccf54d2
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Franklin Schmidt <fschmidt@gmail.com>
parents:
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diff
changeset
|
763 newExp.list.add( ") ? t : (" ); |
2f449ccf54d2
use lists to assemble source
Franklin Schmidt <fschmidt@gmail.com>
parents:
665
diff
changeset
|
764 newExp.list.addAll( exp2.list ); |
2f449ccf54d2
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parents:
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diff
changeset
|
765 newExp.list.add( "))" ); |
2f449ccf54d2
use lists to assemble source
Franklin Schmidt <fschmidt@gmail.com>
parents:
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diff
changeset
|
766 exp = newExp; |
104
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
767 } |
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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diff
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|
768 return parser.success(exp); |
754e6030c029
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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diff
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769 } |
754e6030c029
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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diff
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|
770 |
674 | 771 private Expr AndExpr(In in) throws ParseException { |
645 | 772 parser.begin(); |
674 | 773 Expr exp = RelExpr(in); |
104
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diff
changeset
|
774 if( exp==null ) |
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parents:
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diff
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|
775 return parser.failure(null); |
129
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diff
changeset
|
776 while( Keyword("and",in) ) { |
674 | 777 exp = exp.single(); |
778 Expr exp2 = required(RelExpr(in)).single(); | |
779 Expr newExp = new Expr(Val.SINGLE,true); | |
666
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parents:
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diff
changeset
|
780 newExp.list.add( "(LuanImpl.cnd(t = " ); |
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Franklin Schmidt <fschmidt@gmail.com>
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diff
changeset
|
781 newExp.list.addAll( exp.list ); |
2f449ccf54d2
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parents:
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diff
changeset
|
782 newExp.list.add( ") ? (" ); |
2f449ccf54d2
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parents:
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diff
changeset
|
783 newExp.list.addAll( exp2.list ); |
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parents:
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diff
changeset
|
784 newExp.list.add( ") : t)" ); |
2f449ccf54d2
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Franklin Schmidt <fschmidt@gmail.com>
parents:
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diff
changeset
|
785 exp = newExp; |
104
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parents:
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diff
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786 } |
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parents:
99
diff
changeset
|
787 return parser.success(exp); |
18
3971113699b8
add NumericForStmt
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diff
changeset
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788 } |
3971113699b8
add NumericForStmt
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parents:
17
diff
changeset
|
789 |
674 | 790 private Expr RelExpr(In in) throws ParseException { |
645 | 791 parser.begin(); |
674 | 792 Expr exp = ConcatExpr(in); |
104
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parents:
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diff
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|
793 if( exp==null ) |
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parents:
99
diff
changeset
|
794 return parser.failure(null); |
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diff
changeset
|
795 while(true) { |
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parents:
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diff
changeset
|
796 if( parser.match("==") ) { |
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changeset
|
797 Spaces(in); |
674 | 798 exp = exp.single(); |
799 Expr exp2 = required(ConcatExpr(in)).single(); | |
800 Expr newExp = new Expr(Val.SINGLE,false); | |
666
2f449ccf54d2
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parents:
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diff
changeset
|
801 newExp.list.add( "LuanImpl.eq(luan," ); |
2f449ccf54d2
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diff
changeset
|
802 newExp.list.addAll( exp.list ); |
2f449ccf54d2
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diff
changeset
|
803 newExp.list.add( "," ); |
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804 newExp.list.addAll( exp2.list ); |
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805 newExp.list.add( ")" ); |
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806 exp = newExp; |
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807 } else if( parser.match("~=") ) { |
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808 Spaces(in); |
674 | 809 exp = exp.single(); |
810 Expr exp2 = required(ConcatExpr(in)).single(); | |
811 Expr newExp = new Expr(Val.SINGLE,false); | |
666
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812 newExp.list.add( "!LuanImpl.eq(luan," ); |
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813 newExp.list.addAll( exp.list ); |
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814 newExp.list.add( "," ); |
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815 newExp.list.addAll( exp2.list ); |
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816 newExp.list.add( ")" ); |
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817 exp = newExp; |
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818 } else if( parser.match("<=") ) { |
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819 Spaces(in); |
674 | 820 exp = exp.single(); |
821 Expr exp2 = required(ConcatExpr(in)).single(); | |
822 Expr newExp = new Expr(Val.SINGLE,false); | |
666
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823 newExp.list.add( "LuanImpl.le(luan," ); |
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824 newExp.list.addAll( exp.list ); |
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825 newExp.list.add( "," ); |
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826 newExp.list.addAll( exp2.list ); |
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827 newExp.list.add( ")" ); |
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828 exp = newExp; |
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829 } else if( parser.match(">=") ) { |
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830 Spaces(in); |
674 | 831 exp = exp.single(); |
832 Expr exp2 = required(ConcatExpr(in)).single(); | |
833 Expr newExp = new Expr(Val.SINGLE,false); | |
666
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834 newExp.list.add( "LuanImpl.le(luan," ); |
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835 newExp.list.addAll( exp2.list ); |
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836 newExp.list.add( "," ); |
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837 newExp.list.addAll( exp.list ); |
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838 newExp.list.add( ")" ); |
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839 exp = newExp; |
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840 } else if( parser.match("<") ) { |
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841 Spaces(in); |
674 | 842 exp = exp.single(); |
843 Expr exp2 = required(ConcatExpr(in)).single(); | |
844 Expr newExp = new Expr(Val.SINGLE,false); | |
666
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845 newExp.list.add( "LuanImpl.lt(luan," ); |
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846 newExp.list.addAll( exp.list ); |
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847 newExp.list.add( "," ); |
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848 newExp.list.addAll( exp2.list ); |
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849 newExp.list.add( ")" ); |
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850 exp = newExp; |
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851 } else if( parser.match(">") ) { |
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852 Spaces(in); |
674 | 853 exp = exp.single(); |
854 Expr exp2 = required(ConcatExpr(in)).single(); | |
855 Expr newExp = new Expr(Val.SINGLE,false); | |
666
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856 newExp.list.add( "LuanImpl.lt(luan," ); |
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857 newExp.list.addAll( exp2.list ); |
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858 newExp.list.add( "," ); |
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859 newExp.list.addAll( exp.list ); |
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860 newExp.list.add( ")" ); |
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861 exp = newExp; |
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862 } else |
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863 break; |
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864 } |
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865 return parser.success(exp); |
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866 } |
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867 |
674 | 868 private Expr ConcatExpr(In in) throws ParseException { |
645 | 869 parser.begin(); |
674 | 870 Expr exp = SumExpr(in); |
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871 if( exp==null ) |
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872 return parser.failure(null); |
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873 if( parser.match("..") ) { |
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874 Spaces(in); |
674 | 875 exp = exp.single(); |
876 Expr exp2 = required(ConcatExpr(in)).single(); | |
877 Expr newExp = new Expr(Val.SINGLE,false); | |
666
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878 newExp.list.add( "LuanImpl.concat(luan," ); |
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879 newExp.list.addAll( exp.list ); |
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880 newExp.list.add( "," ); |
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881 newExp.list.addAll( exp2.list ); |
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882 newExp.list.add( ")" ); |
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883 exp = newExp; |
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884 } |
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885 return parser.success(exp); |
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886 } |
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887 |
674 | 888 private Expr SumExpr(In in) throws ParseException { |
645 | 889 parser.begin(); |
674 | 890 Expr exp = TermExpr(in); |
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891 if( exp==null ) |
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892 return parser.failure(null); |
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893 while(true) { |
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894 if( parser.match('+') ) { |
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895 Spaces(in); |
674 | 896 exp = exp.single(); |
897 Expr exp2 = required(TermExpr(in)).single(); | |
898 Expr newExp = new Expr(Val.SINGLE,false); | |
666
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899 newExp.list.add( "LuanImpl.add(luan," ); |
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900 newExp.list.addAll( exp.list ); |
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901 newExp.list.add( "," ); |
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902 newExp.list.addAll( exp2.list ); |
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903 newExp.list.add( ")" ); |
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904 exp = newExp; |
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905 } else if( Minus() ) { |
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906 Spaces(in); |
674 | 907 exp = exp.single(); |
908 Expr exp2 = required(TermExpr(in)).single(); | |
909 Expr newExp = new Expr(Val.SINGLE,false); | |
666
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910 newExp.list.add( "LuanImpl.sub(luan," ); |
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911 newExp.list.addAll( exp.list ); |
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912 newExp.list.add( "," ); |
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913 newExp.list.addAll( exp2.list ); |
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914 newExp.list.add( ")" ); |
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915 exp = newExp; |
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916 } else |
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917 break; |
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918 } |
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919 return parser.success(exp); |
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920 } |
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921 |
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922 private boolean Minus() { |
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923 parser.begin(); |
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924 return parser.match('-') && !parser.match('-') ? parser.success() : parser.failure(); |
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925 } |
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926 |
674 | 927 private Expr TermExpr(In in) throws ParseException { |
645 | 928 parser.begin(); |
674 | 929 Expr exp = UnaryExpr(in); |
650
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930 if( exp==null ) |
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931 return parser.failure(null); |
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932 while(true) { |
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933 if( parser.match('*') ) { |
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934 Spaces(in); |
674 | 935 exp = exp.single(); |
936 Expr exp2 = required(UnaryExpr(in)).single(); | |
937 Expr newExp = new Expr(Val.SINGLE,false); | |
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938 newExp.list.add( "LuanImpl.mul(luan," ); |
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939 newExp.list.addAll( exp.list ); |
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940 newExp.list.add( "," ); |
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941 newExp.list.addAll( exp2.list ); |
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942 newExp.list.add( ")" ); |
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943 exp = newExp; |
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944 } else if( parser.match('/') ) { |
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945 Spaces(in); |
674 | 946 exp = exp.single(); |
947 Expr exp2 = required(UnaryExpr(in)).single(); | |
948 Expr newExp = new Expr(Val.SINGLE,false); | |
666
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949 newExp.list.add( "LuanImpl.div(luan," ); |
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950 newExp.list.addAll( exp.list ); |
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951 newExp.list.add( "," ); |
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952 newExp.list.addAll( exp2.list ); |
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953 newExp.list.add( ")" ); |
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954 exp = newExp; |
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955 } else if( Mod() ) { |
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956 Spaces(in); |
674 | 957 exp = exp.single(); |
958 Expr exp2 = required(UnaryExpr(in)).single(); | |
959 Expr newExp = new Expr(Val.SINGLE,false); | |
666
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960 newExp.list.add( "LuanImpl.mod(luan," ); |
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961 newExp.list.addAll( exp.list ); |
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962 newExp.list.add( "," ); |
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963 newExp.list.addAll( exp2.list ); |
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964 newExp.list.add( ")" ); |
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965 exp = newExp; |
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966 } else |
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967 break; |
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968 } |
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969 return parser.success(exp); |
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970 } |
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971 |
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972 private boolean Mod() { |
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973 parser.begin(); |
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974 return parser.match('%') && !parser.match('>') ? parser.success() : parser.failure(); |
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975 } |
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976 |
674 | 977 private Expr UnaryExpr(In in) throws ParseException { |
645 | 978 parser.begin(); |
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979 if( parser.match('#') ) { |
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980 Spaces(in); |
674 | 981 Expr exp = required(UnaryExpr(in)).single(); |
982 Expr newExp = new Expr(Val.SINGLE,false); | |
666
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983 newExp.list.add( "LuanImpl.len(luan," ); |
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984 newExp.list.addAll( exp.list ); |
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985 newExp.list.add( ")" ); |
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986 return parser.success(newExp); |
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987 } |
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988 if( Minus() ) { |
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989 Spaces(in); |
674 | 990 Expr exp = required(UnaryExpr(in)).single(); |
991 Expr newExp = new Expr(Val.SINGLE,false); | |
666
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992 newExp.list.add( "LuanImpl.unm(luan," ); |
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993 newExp.list.addAll( exp.list ); |
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994 newExp.list.add( ")" ); |
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995 return parser.success(newExp); |
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996 } |
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997 if( Keyword("not",in) ) { |
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998 Spaces(in); |
674 | 999 Expr exp = required(UnaryExpr(in)).single(); |
1000 Expr newExp = new Expr(Val.SINGLE,false); | |
666
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1001 newExp.list.add( "!Luan.checkBoolean(" ); |
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1002 newExp.list.addAll( exp.list ); |
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1003 newExp.list.add( ")" ); |
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1004 return parser.success(newExp); |
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1005 } |
674 | 1006 Expr exp = PowExpr(in); |
104
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1007 if( exp==null ) |
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1008 return parser.failure(null); |
650
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1009 return parser.success(exp); |
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1010 } |
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1011 |
674 | 1012 private Expr PowExpr(In in) throws ParseException { |
645 | 1013 parser.begin(); |
674 | 1014 Expr exp1 = SingleExpr(in); |
657 | 1015 if( exp1==null ) |
104
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1016 return parser.failure(null); |
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1017 if( parser.match('^') ) { |
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1018 Spaces(in); |
674 | 1019 Expr exp2 = required(PowExpr(in)); |
1020 Expr newExp = new Expr(Val.SINGLE,false); | |
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1021 newExp.list.add( "LuanImpl.pow(luan," ); |
674 | 1022 newExp.list.addAll( exp1.single().list ); |
666
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1023 newExp.list.add( "," ); |
674 | 1024 newExp.list.addAll( exp2.single().list ); |
666
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1025 newExp.list.add( ")" ); |
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1026 exp1 = newExp; |
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1027 } |
650
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1028 return parser.success(exp1); |
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1029 } |
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1030 |
674 | 1031 private Expr SingleExpr(In in) throws ParseException { |
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1032 parser.begin(); |
674 | 1033 Expr exp = FunctionExpr(in); |
670
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1034 if( exp != null ) |
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1035 return parser.success(exp); |
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1036 exp = VarExp(in); |
104
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1037 if( exp != null ) |
670
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1038 return parser.success(exp); |
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1039 exp = VarArgs(in); |
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1040 if( exp != null ) |
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1041 return parser.success(exp); |
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1042 return parser.failure(null); |
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1043 } |
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1044 |
674 | 1045 private Expr FunctionExpr(In in) throws ParseException { |
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1046 if( !Keyword("function",in) ) |
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1047 return null; |
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1048 return RequiredFunction(in); |
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1049 } |
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1050 |
674 | 1051 private Expr RequiredFunction(In in) throws ParseException { |
104
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1052 int start = parser.begin(); |
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1053 RequiredMatch('('); |
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1054 In inParens = in.parens(); |
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1055 Spaces(inParens); |
104
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1056 frame = new Frame(frame); |
674 | 1057 Stmts stmt = new Stmts(); |
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1058 List<String> names = NameList(in); |
104
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1059 if( names != null ) { |
674 | 1060 Expr args = new Expr(Val.ARRAY,false); |
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1061 args.list.add( "args" ); |
671 | 1062 stmt.list.addAll( makeLocalSetStmt(names,args).list ); |
104
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1063 if( parser.match(',') ) { |
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1064 Spaces(inParens); |
104
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1065 if( !parser.match("...") ) |
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1066 throw parser.exception(); |
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1067 Spaces(inParens); |
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1068 frame.isVarArg = true; |
671 | 1069 stmt.list.add( "final Object[] varArgs = LuanImpl.varArgs(args," + names.size() + ");\n" ); |
104
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1070 } |
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1071 } else if( parser.match("...") ) { |
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1072 Spaces(inParens); |
104
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1073 frame.isVarArg = true; |
670
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1074 stmt.list.add( "final Object[] varArgs = LuanImpl.varArgs(args,0);\n" ); |
104
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1075 } |
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1076 RequiredMatch(')'); |
129
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1077 Spaces(in); |
674 | 1078 Stmts block = RequiredBlock(); |
670
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1079 stmt.list.addAll( block.list ); |
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1080 stmt.hasReturn = block.hasReturn; |
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1081 RequiredKeyword("end",in); |
674 | 1082 Expr fnDef = newFnExpStr(start,stmt); |
104
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1083 frame = frame.parent; |
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1084 return parser.success(fnDef); |
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1085 } |
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1086 |
674 | 1087 private Expr VarArgs(In in) throws ParseException { |
645 | 1088 parser.begin(); |
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1089 if( !frame.isVarArg || !parser.match("...") ) |
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1090 return parser.failure(null); |
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1091 Spaces(in); |
674 | 1092 Expr exp = new Expr(Val.ARRAY,false); |
670
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1093 exp.list.add("varArgs"); |
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1094 return parser.success(exp); |
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1095 } |
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1096 |
674 | 1097 private Expr TableExpr(In in) throws ParseException { |
645 | 1098 parser.begin(); |
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1099 if( !parser.match('{') ) |
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1100 return parser.failure(null); |
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1101 Spaces(In.NOTHING); |
674 | 1102 List<Expr> builder = new ArrayList<Expr>(); |
655 | 1103 Field(builder); |
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1104 while( FieldSep() ) { |
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1105 Spaces(In.NOTHING); |
655 | 1106 Field(builder); |
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1107 } |
674 | 1108 Expr exp = TemplateExpressions(In.NOTHING); |
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1109 if( exp != null ) |
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1110 builder.add(exp); |
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1111 if( !parser.match('}') ) |
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1112 throw parser.exception("Expected table element or '}'"); |
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1113 Spaces(in); |
674 | 1114 exp = new Expr(Val.SINGLE,false); |
666
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1115 exp.list.add( "LuanImpl.table(" ); |
674 | 1116 exp.list.addAll( expString(builder).array().list ); |
666
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1117 exp.list.add( ")" ); |
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1118 return parser.success( exp ); |
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1119 } |
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1120 |
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1121 private boolean FieldSep() throws ParseException { |
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1122 return parser.anyOf(",;") || EndOfLine(); |
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1123 } |
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1124 |
674 | 1125 private boolean Field(List<Expr> builder) throws ParseException { |
104
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1126 parser.begin(); |
674 | 1127 Expr exp = SubExpr(In.NOTHING); |
104
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1128 if( exp==null ) |
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1129 exp = NameExpr(In.NOTHING); |
104
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1130 if( exp!=null && parser.match('=') ) { |
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1131 Spaces(In.NOTHING); |
674 | 1132 Expr val = RequiredExpr(In.NOTHING).single(); |
1133 Expr newExp = new Expr(Val.SINGLE,false); | |
666
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1134 newExp.list.add( "new TableField(" ); |
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1135 newExp.list.addAll( exp.list ); |
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1136 newExp.list.add( "," ); |
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1137 newExp.list.addAll( val.list ); |
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1138 newExp.list.add( ")" ); |
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1139 builder.add( newExp ); |
104
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1140 return parser.success(); |
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1141 } |
104
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1142 parser.rollback(); |
674 | 1143 Expr exprs = ExprZ(In.NOTHING); |
154
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1144 if( exprs != null ) { |
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1145 builder.add(exprs); |
104
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1146 return parser.success(); |
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1147 } |
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1148 return parser.failure(); |
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1149 } |
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1150 |
674 | 1151 private Expr VarExp(In in) throws ParseException { |
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1152 Var var = VarZ(in); |
656 | 1153 return var==null ? null : var.exp(); |
8
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1154 } |
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1155 |
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1156 private Var VarZ(In in) throws ParseException { |
645 | 1157 parser.begin(); |
1158 Var var = VarStart(in); | |
104
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1159 if( var==null ) |
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1160 return parser.failure(null); |
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1161 Var var2; |
656 | 1162 while( (var2=Var2(in,var.exp())) != null ) { |
104
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1163 var = var2; |
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1164 } |
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1165 return parser.success(var); |
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1166 } |
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1167 |
645 | 1168 private Var VarStart(In in) throws ParseException { |
206
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1169 if( parser.match('(') ) { |
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1170 In inParens = in.parens(); |
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1171 Spaces(inParens); |
674 | 1172 Expr exp = RequiredExpr(inParens).single(); |
206
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1173 RequiredMatch(')'); |
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1174 Spaces(in); |
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1175 return exprVar(exp); |
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1176 } |
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1177 String name = Name(in); |
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1178 if( name != null ) |
645 | 1179 return nameVar(name); |
674 | 1180 Expr exp; |
656 | 1181 exp = TableExpr(in); |
206
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1182 if( exp != null ) |
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1183 return exprVar(exp); |
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1184 exp = Literal(in); |
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1185 if( exp != null ) |
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1186 return exprVar(exp); |
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1187 return null; |
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1188 } |
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1189 |
674 | 1190 private Var Var2(In in,Expr exp1) throws ParseException { |
104
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1191 parser.begin(); |
674 | 1192 Expr exp2 = SubExpr(in); |
104
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1193 if( exp2 != null ) |
656 | 1194 return parser.success(indexVar(exp1,exp2)); |
104
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1195 if( parser.match('.') ) { |
129
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1196 Spaces(in); |
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1197 exp2 = NameExpr(in); |
104
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1198 if( exp2!=null ) |
656 | 1199 return parser.success(indexVar(exp1,exp2)); |
636 | 1200 return parser.failure(null); |
104
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1201 } |
674 | 1202 Expr fnCall = Args( in, exp1, new ArrayList<Expr>() ); |
206
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1203 if( fnCall != null ) |
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1204 return parser.success(exprVar(fnCall)); |
104
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1205 return parser.failure(null); |
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1206 } |
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1207 |
503 | 1208 private interface Var { |
674 | 1209 public Expr exp() throws ParseException; |
660 | 1210 // public Settable settable() throws ParseException; |
1211 public boolean isSettable(); | |
674 | 1212 public Stmts set(Expr val) throws ParseException; |
503 | 1213 } |
1214 | |
674 | 1215 private Expr env() { |
670
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1216 Sym sym = getSym("_ENV"); |
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1217 if( sym != null ) |
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1218 return sym.exp(); |
503 | 1219 return null; |
104
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1220 } |
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1221 |
645 | 1222 private Var nameVar(final String name) { |
104
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1223 return new Var() { |
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1224 |
674 | 1225 public Expr exp() throws ParseException { |
670
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1226 Sym sym = getSym(name); |
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1227 if( sym != null ) |
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1228 return sym.exp(); |
674 | 1229 Expr envExpr = env(); |
503 | 1230 if( envExpr != null ) |
670
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1231 return indexExpStr( envExpr, constExpStr(name) ); |
503 | 1232 parser.failure(null); |
1233 throw parser.exception("name '"+name+"' not defined"); | |
104
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1234 } |
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1235 |
660 | 1236 public boolean isSettable() { |
1237 return true; | |
1238 } | |
674 | 1239 |
1240 public Stmts set(Expr val) throws ParseException { | |
670
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1241 Sym sym = getSym(name); |
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1242 if( sym != null ) { |
674 | 1243 Stmts stmt = new Stmts(); |
670
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1244 stmt.list.addAll( sym.exp().list ); |
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1245 stmt.list.add( " = " ); |
674 | 1246 stmt.list.addAll( val.single().list ); |
670
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1247 stmt.list.add( ";\n" ); |
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1248 return stmt; |
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1249 } |
674 | 1250 Expr envExpr = env(); |
670
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1251 if( envExpr != null ) |
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1252 return indexVar( envExpr, constExpStr(name) ).set(val); |
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1253 throw new RuntimeException(); |
660 | 1254 } |
104
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1255 }; |
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1256 } |
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1257 |
674 | 1258 private Var exprVar(final Expr expr) { |
104
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1259 return new Var() { |
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1260 |
674 | 1261 public Expr exp() { |
104
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1262 return expr; |
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1263 } |
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1264 |
660 | 1265 public boolean isSettable() { |
1266 return false; | |
1267 } | |
1268 | |
674 | 1269 public Stmts set(Expr val) { |
660 | 1270 throw new RuntimeException(); |
104
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1271 } |
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1272 }; |
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1273 } |
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1274 |
674 | 1275 private Var indexVar(final Expr table,final Expr key) { |
104
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1276 return new Var() { |
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1277 |
674 | 1278 public Expr exp() { |
656 | 1279 return indexExpStr( table, key ); |
104
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1280 } |
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1281 |
660 | 1282 public boolean isSettable() { |
1283 return true; | |
1284 } | |
674 | 1285 |
1286 public Stmts set(Expr val) { | |
1287 Stmts stmt = new Stmts(); | |
666
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1288 stmt.list.add( "LuanImpl.put(luan," ); |
674 | 1289 stmt.list.addAll( table.single().list ); |
666
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1290 stmt.list.add( "," ); |
674 | 1291 stmt.list.addAll( key.single().list ); |
666
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1292 stmt.list.add( "," ); |
674 | 1293 stmt.list.addAll( val.single().list ); |
666
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1294 stmt.list.add( ");\n" ); |
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1295 return stmt; |
660 | 1296 } |
104
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1297 }; |
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1298 } |
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1299 |
674 | 1300 private Expr Args(In in,Expr fn,List<Expr> builder) throws ParseException { |
104
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1301 parser.begin(); |
129
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1302 return args(in,builder) |
656 | 1303 ? parser.success( callExpStr( fn, expString(builder) ) ) |
674 | 1304 : parser.failure((Expr)null); |
107
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1305 } |
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1306 |
674 | 1307 private boolean args(In in,List<Expr> builder) throws ParseException { |
645 | 1308 parser.begin(); |
104
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1309 if( parser.match('(') ) { |
129
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1310 In inParens = in.parens(); |
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1311 Spaces(inParens); |
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1312 ExpList(inParens,builder); // optional |
107
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1313 if( !parser.match(')') ) |
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1314 throw parser.exception("Expression or ')' expected"); |
129
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1315 Spaces(in); |
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1316 return parser.success(); |
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1317 } |
674 | 1318 Expr exp = TableExpr(in); |
107
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1319 if( exp != null ) { |
655 | 1320 builder.add(exp); |
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1321 return parser.success(); |
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1322 } |
129
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1323 String s = StringLiteral(in); |
107
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1324 if( s != null ) { |
657 | 1325 builder.add( constExpStr(s) ); |
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1326 return parser.success(); |
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1327 } |
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1328 /* |
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1329 Expressions exps = TemplateExpressions(in); |
107
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1330 if( exps != null ) { |
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1331 builder.add(exps); |
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1332 return parser.success(); |
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1333 } |
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1334 */ |
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1335 return parser.failure(); |
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1336 } |
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1337 |
674 | 1338 private Expr ExpStringList(In in) throws ParseException { |
1339 List<Expr> builder = new ArrayList<Expr>(); | |
654 | 1340 return ExpList(in,builder) ? expString(builder) : null; |
652
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1341 } |
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1342 |
674 | 1343 private boolean ExpList(In in,List<Expr> builder) throws ParseException { |
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1344 parser.begin(); |
674 | 1345 Expr exp = TemplateExpressions(in); |
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1346 if( exp != null ) { |
654 | 1347 builder.add(exp); |
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1348 return parser.success(); |
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1349 } |
654 | 1350 exp = ExprZ(in); |
1351 if( exp==null ) | |
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1352 return parser.failure(); |
654 | 1353 builder.add(exp); |
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1354 while( parser.match(',') ) { |
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1355 Spaces(in); |
158
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1356 exp = TemplateExpressions(in); |
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1357 if( exp != null ) { |
654 | 1358 builder.add(exp); |
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1359 return parser.success(); |
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1360 } |
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1361 builder.add( RequiredExpr(in) ); |
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1362 } |
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1363 return parser.success(); |
9
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1364 } |
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1365 |
674 | 1366 private Expr SubExpr(In in) throws ParseException { |
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1367 parser.begin(); |
209
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1368 if( !parser.match('[') || parser.test("[") || parser.test("=") ) |
104
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1369 return parser.failure(null); |
604
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1370 Spaces(In.NOTHING); |
674 | 1371 Expr exp = RequiredExpr(In.NOTHING).single(); |
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1372 RequiredMatch(']'); |
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1373 Spaces(in); |
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1374 return parser.success(exp); |
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1375 } |
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1376 |
674 | 1377 private Expr NameExpr(In in) throws ParseException { |
645 | 1378 parser.begin(); |
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1379 String name = Name(in); |
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1380 if( name==null ) |
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1381 return parser.failure(null); |
656 | 1382 return parser.success(constExpStr(name)); |
54
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1383 } |
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1384 |
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1385 private String RequiredName(In in) throws ParseException { |
104
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1386 parser.begin(); |
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1387 String name = Name(in); |
104
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1388 if( name==null ) |
139
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1389 throw parser.exception("Name expected"); |
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1390 return parser.success(name); |
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1391 } |
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1392 |
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1393 private String Name(In in) throws ParseException { |
104
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1394 int start = parser.begin(); |
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1395 if( !NameFirstChar() ) |
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1396 return parser.failure(null); |
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1397 while( NameChar() ); |
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1398 String match = parser.textFrom(start); |
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1399 if( keywords.contains(match) ) |
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1400 return parser.failure(null); |
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1401 Spaces(in); |
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1402 return parser.success(match); |
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1403 } |
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1404 |
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1405 private boolean NameChar() { |
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1406 return NameFirstChar() || Digit(); |
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1407 } |
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1408 |
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1409 private boolean NameFirstChar() { |
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1410 return parser.inCharRange('a', 'z') || parser.inCharRange('A', 'Z') || parser.match('_'); |
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1411 } |
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1412 |
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1413 private void RequiredMatch(char c) throws ParseException { |
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1414 if( !parser.match(c) ) |
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1415 throw parser.exception("'"+c+"' expected"); |
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1416 } |
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1417 |
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1418 private void RequiredMatch(String s) throws ParseException { |
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1419 if( !parser.match(s) ) |
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1420 throw parser.exception("'"+s+"' expected"); |
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1421 } |
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1422 |
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1423 private void RequiredKeyword(String keyword,In in) throws ParseException { |
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1424 if( !Keyword(keyword,in) ) |
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1425 throw parser.exception("'"+keyword+"' expected"); |
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1426 } |
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1427 |
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1428 private boolean Keyword(String keyword,In in) throws ParseException { |
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1429 parser.begin(); |
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1430 if( !parser.match(keyword) || NameChar() ) |
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1431 return parser.failure(); |
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1432 Spaces(in); |
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1433 return parser.success(); |
12
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|
1434 } |
9cea1aea5eef
CmdLine can run files
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|
1435 |
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1436 private static final Set<String> keywords = new HashSet<String>(Arrays.asList( |
12
9cea1aea5eef
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|
1437 "and", |
9cea1aea5eef
CmdLine can run files
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|
1438 "break", |
9cea1aea5eef
CmdLine can run files
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|
1439 "do", |
9cea1aea5eef
CmdLine can run files
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|
1440 "else", |
9cea1aea5eef
CmdLine can run files
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|
1441 "elseif", |
9cea1aea5eef
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|
1442 "end", |
9cea1aea5eef
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|
1443 "false", |
9cea1aea5eef
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|
1444 "for", |
9cea1aea5eef
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|
1445 "function", |
9cea1aea5eef
CmdLine can run files
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|
1446 "goto", |
9cea1aea5eef
CmdLine can run files
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|
1447 "if", |
9cea1aea5eef
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|
1448 "in", |
9cea1aea5eef
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|
1449 "local", |
9cea1aea5eef
CmdLine can run files
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|
1450 "nil", |
9cea1aea5eef
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|
1451 "not", |
9cea1aea5eef
CmdLine can run files
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|
1452 "or", |
9cea1aea5eef
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|
1453 "repeat", |
9cea1aea5eef
CmdLine can run files
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|
1454 "return", |
9cea1aea5eef
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|
1455 "then", |
9cea1aea5eef
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|
1456 "true", |
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|
1457 "until", |
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|
1458 "while" |
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|
1459 )); |
9cea1aea5eef
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|
1460 |
674 | 1461 private Expr Literal(In in) throws ParseException { |
645 | 1462 parser.begin(); |
666
2f449ccf54d2
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|
1463 if( NilLiteral(in) ) { |
674 | 1464 Expr exp = new Expr(Val.SINGLE,false); |
666
2f449ccf54d2
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|
1465 exp.list.add( "null" ); |
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|
1466 return parser.success(exp); |
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|
1467 } |
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1468 Boolean b = BooleanLiteral(in); |
666
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|
1469 if( b != null ) { |
674 | 1470 Expr exp = new Expr(Val.SINGLE,false); |
666
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|
1471 exp.list.add( b.toString() ); |
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|
1472 return parser.success(exp); |
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1473 } |
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1474 Number n = NumberLiteral(in); |
657 | 1475 if( n != null ) { |
1476 String s = n.toString(); | |
1477 if( n instanceof Long ) | |
1478 s += "L"; | |
674 | 1479 Expr exp = new Expr(Val.SINGLE,false); |
666
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|
1480 exp.list.add( s ); |
2f449ccf54d2
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|
1481 return parser.success(exp); |
657 | 1482 } |
129
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1483 String s = StringLiteral(in); |
104
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1484 if( s != null ) |
656 | 1485 return parser.success(constExpStr(s)); |
195
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|
1486 return parser.failure(null); |
5
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|
1487 } |
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|
1488 |
674 | 1489 private Expr constExpStr(String s) { |
664 | 1490 s = s |
1491 .replace("\\","\\\\") | |
1492 .replace("\"","\\\"") | |
1493 .replace("\n","\\n") | |
1494 .replace("\r","\\r") | |
1495 .replace("\t","\\t") | |
1496 .replace("\b","\\b") | |
1497 ; | |
674 | 1498 Expr exp = new Expr(Val.SINGLE,false); |
666
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|
1499 exp.list.add( "\""+s+"\"" ); |
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|
1500 return exp; |
664 | 1501 } |
1502 | |
129
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1503 private boolean NilLiteral(In in) throws ParseException { |
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1504 return Keyword("nil",in); |
65
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1505 } |
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multi-line statements
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1506 |
129
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1507 private Boolean BooleanLiteral(In in) throws ParseException { |
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1508 if( Keyword("true",in) ) |
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1509 return true; |
129
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1510 if( Keyword("false",in) ) |
104
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1511 return false; |
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1512 return null; |
5
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|
1513 } |
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1514 |
129
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|
1515 private Number NumberLiteral(In in) throws ParseException { |
104
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1516 parser.begin(); |
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|
1517 Number n; |
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|
1518 if( parser.matchIgnoreCase("0x") ) { |
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|
1519 n = HexNumber(); |
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1520 } else { |
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|
1521 n = DecNumber(); |
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1522 } |
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|
1523 if( n==null || NameChar() ) |
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1524 return parser.failure(null); |
129
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1525 Spaces(in); |
104
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1526 return parser.success(n); |
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1527 } |
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1528 |
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|
1529 private Number DecNumber() { |
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1530 int start = parser.begin(); |
535
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|
1531 boolean isInt = true; |
104
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|
1532 if( Int() ) { |
535
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|
1533 if( parser.match('.') ) { |
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|
1534 isInt = false; |
104
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|
1535 Int(); // optional |
535
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|
1536 } |
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|
1537 } else if( parser.match('.') && Int() ) { |
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1538 // ok |
535
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1539 isInt = false; |
104
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1540 } else |
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1541 return parser.failure(null); |
535
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|
1542 if( Exponent() ) // optional |
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|
1543 isInt = false; |
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|
1544 String s = parser.textFrom(start); |
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|
1545 if( isInt ) { |
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|
1546 try { |
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|
1547 return parser.success(Integer.valueOf(s)); |
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|
1548 } catch(NumberFormatException e) {} |
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|
1549 try { |
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|
1550 return parser.success(Long.valueOf(s)); |
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|
1551 } catch(NumberFormatException e) {} |
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|
1552 } |
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|
1553 return parser.success(Double.valueOf(s)); |
5
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|
1554 } |
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parents:
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1555 |
104
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1556 private boolean Exponent() { |
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1557 parser.begin(); |
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1558 if( !parser.matchIgnoreCase("e") ) |
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1559 return parser.failure(); |
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|
1560 parser.anyOf("+-"); // optional |
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1561 if( !Int() ) |
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1562 return parser.failure(); |
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1563 return parser.success(); |
5
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|
1564 } |
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start LuaParser
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1565 |
104
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1566 private boolean Int() { |
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1567 if( !Digit() ) |
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1568 return false; |
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1569 while( Digit() ); |
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1570 return true; |
5
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|
1571 } |
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start LuaParser
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1572 |
104
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1573 private boolean Digit() { |
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1574 return parser.inCharRange('0', '9'); |
16
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|
1575 } |
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1576 |
104
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1577 private Number HexNumber() { |
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|
1578 int start = parser.begin(); |
535
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1579 long nLong = 0; |
104
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1580 double n; |
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|
1581 if( HexInt() ) { |
535
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|
1582 nLong = Long.parseLong(parser.textFrom(start),16); |
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1583 n = (double)nLong; |
104
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1584 if( parser.match('.') ) { |
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1585 start = parser.currentIndex(); |
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|
1586 if( HexInt() ) { |
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1587 String dec = parser.textFrom(start); |
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1588 n += (double)Long.parseLong(dec,16) / Math.pow(16,dec.length()); |
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1589 } |
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1590 } |
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|
1591 } else if( parser.match('.') && HexInt() ) { |
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1592 String dec = parser.textFrom(start+1); |
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1593 n = (double)Long.parseLong(dec,16) / Math.pow(16,dec.length()); |
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1594 } else { |
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1595 return parser.failure(null); |
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1596 } |
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|
1597 if( parser.matchIgnoreCase("p") ) { |
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|
1598 parser.anyOf("+-"); // optional |
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|
1599 start = parser.currentIndex(); |
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1600 if( !HexInt() ) |
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|
1601 return parser.failure(null); |
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1602 n *= Math.pow(2,(double)Long.parseLong(parser.textFrom(start))); |
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|
1603 } |
535
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|
1604 if( nLong == n ) { |
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parse numeric constants to ints or longs if possible
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|
1605 int nInt = (int)nLong; |
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|
1606 if( nInt == nLong ) |
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parse numeric constants to ints or longs if possible
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|
1607 return parser.success(Integer.valueOf(nInt)); |
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|
1608 return parser.success(Long.valueOf(nLong)); |
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|
1609 } |
104
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1610 return parser.success(Double.valueOf(n)); |
16
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|
1611 } |
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1612 |
104
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1613 private boolean HexInt() { |
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1614 if( !HexDigit() ) |
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1615 return false; |
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1616 while( HexDigit() ); |
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1617 return true; |
16
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|
1618 } |
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1619 |
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1620 |
104
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|
1621 private boolean HexDigit() { |
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1622 return Digit() || parser.anyOf("abcdefABCDEF"); |
6
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|
1623 } |
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1624 |
129
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|
1625 private String StringLiteral(In in) throws ParseException { |
104
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1626 String s; |
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1627 if( (s=QuotedString('"'))==null |
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1628 && (s=QuotedString('\''))==null |
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1629 && (s=LongString())==null |
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1630 ) |
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1631 return null; |
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1632 Spaces(in); |
104
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1633 return s; |
16
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1634 } |
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1635 |
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1636 private String LongString() throws ParseException { |
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1637 parser.begin(); |
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1638 if( !parser.match('[') ) |
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1639 return parser.failure(null); |
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1640 int start = parser.currentIndex(); |
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1641 while( parser.match('=') ); |
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1642 int nEquals = parser.currentIndex() - start; |
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1643 if( !parser.match('[') ) |
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|
1644 return parser.failure(null); |
120
8d7730a5e3b4
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1645 EndOfLine(); |
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1646 start = parser.currentIndex(); |
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1647 while( !LongBracketsEnd(nEquals) ) { |
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1648 if( !parser.anyChar() ) |
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1649 throw parser.exception("Unclosed long string"); |
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1650 } |
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1651 String s = parser.text.substring( start, parser.currentIndex() - nEquals - 2 ); |
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1652 return parser.success(s); |
6
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1653 } |
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1654 |
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1655 private String QuotedString(char quote) throws ParseException { |
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1656 parser.begin(); |
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1657 if( !parser.match(quote) ) |
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1658 return parser.failure(null); |
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1659 StringBuilder buf = new StringBuilder(); |
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1660 while( !parser.match(quote) ) { |
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1661 Character c = EscSeq(); |
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1662 if( c != null ) { |
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1663 buf.append(c); |
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1664 } else { |
271
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1665 if( parser.test('\r') || parser.test('\n') || !parser.anyChar() ) |
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1666 throw parser.exception("Unclosed string"); |
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1667 buf.append(parser.lastChar()); |
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1668 } |
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1669 } |
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1670 return parser.success(buf.toString()); |
6
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1671 } |
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1672 |
104
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1673 private Character EscSeq() { |
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1674 parser.begin(); |
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1675 if( !parser.match('\\') ) |
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1676 return parser.failure(null); |
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1677 if( parser.match('a') ) return parser.success('\u0007'); |
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1678 if( parser.match('b') ) return parser.success('\b'); |
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1679 if( parser.match('f') ) return parser.success('\f'); |
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1680 if( parser.match('n') ) return parser.success('\n'); |
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1681 if( parser.match('r') ) return parser.success('\r'); |
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1682 if( parser.match('t') ) return parser.success('\t'); |
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1683 if( parser.match('v') ) return parser.success('\u000b'); |
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1684 if( parser.match('\\') ) return parser.success('\\'); |
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1685 if( parser.match('"') ) return parser.success('"'); |
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1686 if( parser.match('\'') ) return parser.success('\''); |
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1687 int start = parser.currentIndex(); |
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1688 if( parser.match('x') && HexDigit() && HexDigit() ) |
155
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1689 return parser.success((char)Integer.parseInt(parser.textFrom(start+1),16)); |
104
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1690 if( Digit() ) { |
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1691 if( Digit() ) Digit(); // optional |
155
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1692 return parser.success((char)Integer.parseInt(parser.textFrom(start))); |
104
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1693 } |
271
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1694 if( EndOfLine() ) |
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1695 return parser.success('\n'); |
104
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1696 return parser.failure(null); |
14
2ddf85634d20
whitespace handling;
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1697 } |
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1698 |
129
486a0641bca4
add pickle client/server;
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1699 private void Spaces(In in) throws ParseException { |
247
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1700 while( parser.anyOf(" \t") || Comment() || ContinueOnNextLine() || in.parens && EndOfLine() ); |
14
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1701 } |
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1702 |
104
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1703 private boolean ContinueOnNextLine() { |
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1704 parser.begin(); |
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1705 return parser.match('\\') && EndOfLine() ? parser.success() : parser.failure(); |
7
bca8fc5d928b
work on expressions
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1706 } |
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1707 |
247
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1708 private boolean Comment() throws ParseException { |
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1709 if( LongComment() ) |
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1710 return true; |
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1711 if( parser.match("--") ) { |
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1712 while( parser.noneOf("\r\n") ); |
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1713 return true; |
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1714 } |
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1715 return false; |
18
3971113699b8
add NumericForStmt
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1716 } |
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1717 |
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1718 private boolean LongComment() throws ParseException { |
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1719 parser.begin(); |
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1720 if( !parser.match("--[") ) |
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1721 return parser.failure(); |
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1722 int start = parser.currentIndex(); |
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1723 while( parser.match('=') ); |
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1724 int nEquals = parser.currentIndex() - start; |
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1725 if( !parser.match('[') ) |
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1726 return parser.failure(); |
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1727 while( !LongBracketsEnd(nEquals) ) { |
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1728 if( !parser.anyChar() ) |
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1729 throw parser.exception("Unclosed comment"); |
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1730 } |
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1731 return parser.success(); |
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1732 } |
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diff
changeset
|
1733 |
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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diff
changeset
|
1734 private boolean LongBracketsEnd(int nEquals) { |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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diff
changeset
|
1735 parser.begin(); |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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diff
changeset
|
1736 if( !parser.match(']') ) |
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parents:
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diff
changeset
|
1737 return parser.failure(); |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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diff
changeset
|
1738 while( nEquals-- > 0 ) { |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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diff
changeset
|
1739 if( !parser.match('=') ) |
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parents:
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diff
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|
1740 return parser.failure(); |
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parents:
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diff
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|
1741 } |
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parents:
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diff
changeset
|
1742 if( !parser.match(']') ) |
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parents:
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diff
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|
1743 return parser.failure(); |
754e6030c029
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|
1744 return parser.success(); |
12
9cea1aea5eef
CmdLine can run files
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parents:
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diff
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|
1745 } |
9cea1aea5eef
CmdLine can run files
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|
1746 |
648
e387e4021afe
start compiler with len operator
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diff
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|
1747 |
e387e4021afe
start compiler with len operator
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|
1748 |
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start compiler with len operator
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diff
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|
1749 |
676 | 1750 private static AtomicInteger classCounter = new AtomicInteger(); |
648
e387e4021afe
start compiler with len operator
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parents:
645
diff
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|
1751 |
674 | 1752 private enum Val { SINGLE, ARRAY } |
1753 | |
1754 private class Expr { | |
666
2f449ccf54d2
use lists to assemble source
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parents:
665
diff
changeset
|
1755 final List list = new ArrayList(); |
674 | 1756 final Val valType; |
649
37f0cf43f191
UnaryExpr now compiled
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parents:
648
diff
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|
1757 final boolean isStmt; |
674 | 1758 |
1759 Expr(Val valType,boolean isStmt) { | |
1760 this.valType = valType; | |
649
37f0cf43f191
UnaryExpr now compiled
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diff
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|
1761 this.isStmt = isStmt; |
37f0cf43f191
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diff
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|
1762 } |
37f0cf43f191
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diff
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|
1763 |
674 | 1764 Expr single() { |
1765 if( valType==Val.SINGLE ) | |
666
2f449ccf54d2
use lists to assemble source
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parents:
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diff
changeset
|
1766 return this; |
674 | 1767 Expr exp = new Expr(Val.SINGLE,isStmt); |
1768 exp.list.add( valType==Val.ARRAY ? "LuanImpl.first(" : "Luan.first(" ); | |
666
2f449ccf54d2
use lists to assemble source
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diff
changeset
|
1769 exp.list.addAll( list ); |
669 | 1770 exp.list.add( ")" ); |
666
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use lists to assemble source
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diff
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|
1771 return exp; |
649
37f0cf43f191
UnaryExpr now compiled
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diff
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|
1772 } |
674 | 1773 |
1774 Expr array() { | |
1775 if( valType==Val.ARRAY ) | |
1776 return this; | |
1777 Expr exp = new Expr(Val.ARRAY,isStmt); | |
1778 if( valType==Val.SINGLE ) { | |
1779 exp.list.add( "new Object[]{" ); | |
1780 exp.list.addAll( list ); | |
1781 exp.list.add( "}" ); | |
1782 } else { | |
1783 exp.list.add( "Luan.array(" ); | |
1784 exp.list.addAll( list ); | |
1785 exp.list.add( ")" ); | |
1786 } | |
1787 return exp; | |
1788 } | |
1789 | |
650
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finish compiling operators
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parents:
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diff
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|
1790 } |
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diff
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|
1791 |
674 | 1792 private Expr expString(List<Expr> list) { |
1793 Expr exp = new Expr(Val.ARRAY,false); | |
652
067d9470184d
compile SetStmt and ForStmt
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parents:
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diff
changeset
|
1794 switch(list.size()) { |
067d9470184d
compile SetStmt and ForStmt
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diff
changeset
|
1795 case 0: |
666
2f449ccf54d2
use lists to assemble source
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diff
changeset
|
1796 exp.list.add("LuanFunction.NOTHING"); |
2f449ccf54d2
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diff
changeset
|
1797 return exp; |
652
067d9470184d
compile SetStmt and ForStmt
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651
diff
changeset
|
1798 case 1: |
653
538b0ae08faa
compile IfStmt and BreakStmt
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parents:
652
diff
changeset
|
1799 return list.get(0); |
652
067d9470184d
compile SetStmt and ForStmt
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diff
changeset
|
1800 default: |
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compile SetStmt and ForStmt
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diff
changeset
|
1801 int lastI = list.size() - 1; |
666
2f449ccf54d2
use lists to assemble source
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parents:
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diff
changeset
|
1802 exp.list.add( "new Object[]{" ); |
652
067d9470184d
compile SetStmt and ForStmt
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parents:
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diff
changeset
|
1803 for( int i=0; i<lastI; i++ ) { |
674 | 1804 exp.list.addAll( list.get(i).single().list ); |
666
2f449ccf54d2
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parents:
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diff
changeset
|
1805 exp.list.add( "," ); |
652
067d9470184d
compile SetStmt and ForStmt
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parents:
651
diff
changeset
|
1806 } |
674 | 1807 Expr last = list.get(lastI); |
1808 if( last.valType==Val.SINGLE ) { | |
666
2f449ccf54d2
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diff
changeset
|
1809 exp.list.addAll( last.list ); |
2f449ccf54d2
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diff
changeset
|
1810 exp.list.add( "}" ); |
652
067d9470184d
compile SetStmt and ForStmt
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parents:
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diff
changeset
|
1811 } else { |
666
2f449ccf54d2
use lists to assemble source
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diff
changeset
|
1812 exp.list.add( "}" ); |
2f449ccf54d2
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diff
changeset
|
1813 exp.list.add( 0, "LuanImpl.concatArgs(" ); |
2f449ccf54d2
use lists to assemble source
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diff
changeset
|
1814 exp.list.add( "," ); |
2f449ccf54d2
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diff
changeset
|
1815 exp.list.addAll( last.list ); |
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use lists to assemble source
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parents:
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diff
changeset
|
1816 exp.list.add( ")" ); |
652
067d9470184d
compile SetStmt and ForStmt
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parents:
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diff
changeset
|
1817 } |
666
2f449ccf54d2
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diff
changeset
|
1818 return exp; |
652
067d9470184d
compile SetStmt and ForStmt
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diff
changeset
|
1819 } |
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compile SetStmt and ForStmt
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parents:
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diff
changeset
|
1820 } |
657 | 1821 |
674 | 1822 private static class Stmts { |
666
2f449ccf54d2
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parents:
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diff
changeset
|
1823 final List list = new ArrayList(); |
663
b438a47196bc
finish compiling function blocks
Franklin Schmidt <fschmidt@gmail.com>
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662
diff
changeset
|
1824 boolean hasReturn = false; |
651
140cc5191b7a
start compiling statements
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diff
changeset
|
1825 } |
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start compiling statements
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diff
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|
1826 |
669 | 1827 private static String concat(List list) { |
666
2f449ccf54d2
use lists to assemble source
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parents:
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diff
changeset
|
1828 StringBuilder sb = new StringBuilder(); |
669 | 1829 for( Object o : list ) { |
666
2f449ccf54d2
use lists to assemble source
Franklin Schmidt <fschmidt@gmail.com>
parents:
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diff
changeset
|
1830 if( o instanceof List ) throw new RuntimeException(); |
674 | 1831 if( o instanceof Expr ) throw new RuntimeException(); |
1832 if( o instanceof Stmts ) throw new RuntimeException(); | |
666
2f449ccf54d2
use lists to assemble source
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parents:
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diff
changeset
|
1833 sb.append( o.toString() ); |
2f449ccf54d2
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parents:
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diff
changeset
|
1834 } |
669 | 1835 return sb.toString(); |
1836 } | |
1837 | |
674 | 1838 private Class toFnClass(Stmts stmt,List<UpSym> upValueSymbols) { |
669 | 1839 String code = concat(stmt.list); |
666
2f449ccf54d2
use lists to assemble source
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parents:
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diff
changeset
|
1840 //System.out.println("code:\n"+code); |
651
140cc5191b7a
start compiling statements
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diff
changeset
|
1841 |
676 | 1842 String className = "EXP" + classCounter.incrementAndGet(); |
663
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diff
changeset
|
1843 String classCode = "" |
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diff
changeset
|
1844 +"package luan.impl;\n" |
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diff
changeset
|
1845 +"import luan.Luan;\n" |
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diff
changeset
|
1846 +"import luan.LuanFunction;\n" |
670
58ebfec6178b
all luan now compiles
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parents:
669
diff
changeset
|
1847 +"import luan.LuanState;\n" |
672
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better java permission handling
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parents:
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diff
changeset
|
1848 +"import luan.LuanJava;\n" |
663
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diff
changeset
|
1849 +"import luan.LuanException;\n" |
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diff
changeset
|
1850 +"import luan.modules.PackageLuan;\n" |
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diff
changeset
|
1851 +"\n" |
667
08966099aa6d
implement Closure directly
Franklin Schmidt <fschmidt@gmail.com>
parents:
666
diff
changeset
|
1852 +"public class " + className +" extends Closure {\n" |
675 | 1853 +" public "+className+"(LuanJava java) throws LuanException {\n" |
672
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better java permission handling
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parents:
671
diff
changeset
|
1854 +" super("+upValueSymbols.size()+",java);\n" |
670
58ebfec6178b
all luan now compiles
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669
diff
changeset
|
1855 + init(upValueSymbols) |
664 | 1856 +" }\n" |
1857 +"\n" | |
670
58ebfec6178b
all luan now compiles
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669
diff
changeset
|
1858 +" @Override public Object doCall(LuanState luan,Object[] args) throws LuanException {\n" |
663
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finish compiling function blocks
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diff
changeset
|
1859 +" Object t;\n" |
674 | 1860 +" Object[] a;\n" |
666
2f449ccf54d2
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diff
changeset
|
1861 +" " + code |
663
b438a47196bc
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diff
changeset
|
1862 +" }\n" |
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diff
changeset
|
1863 +"}\n" |
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diff
changeset
|
1864 ; |
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diff
changeset
|
1865 try { |
671 | 1866 //System.out.println(parser.sourceName); |
1867 //System.out.println(classCode); | |
670
58ebfec6178b
all luan now compiles
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parents:
669
diff
changeset
|
1868 return LuanJavaCompiler.compile("luan.impl."+className,parser.sourceName,classCode); |
663
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diff
changeset
|
1869 } catch(ClassNotFoundException e) { |
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changeset
|
1870 throw new RuntimeException(e); |
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changeset
|
1871 } |
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diff
changeset
|
1872 } |
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diff
changeset
|
1873 |
674 | 1874 private Expr toFnExpStr(Stmts stmt,List<UpSym> upValueSymbols) { |
1875 Expr exp = new Expr(Val.SINGLE,false); | |
666
2f449ccf54d2
use lists to assemble source
Franklin Schmidt <fschmidt@gmail.com>
parents:
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diff
changeset
|
1876 exp.list.add( "" |
665 | 1877 +"\n" |
672
d3e5414bdf4c
better java permission handling
Franklin Schmidt <fschmidt@gmail.com>
parents:
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diff
changeset
|
1878 +"new Closure("+upValueSymbols.size()+",java) {\n" |
670
58ebfec6178b
all luan now compiles
Franklin Schmidt <fschmidt@gmail.com>
parents:
669
diff
changeset
|
1879 +"{\n" |
58ebfec6178b
all luan now compiles
Franklin Schmidt <fschmidt@gmail.com>
parents:
669
diff
changeset
|
1880 + init(upValueSymbols) |
58ebfec6178b
all luan now compiles
Franklin Schmidt <fschmidt@gmail.com>
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669
diff
changeset
|
1881 +"}\n" |
58ebfec6178b
all luan now compiles
Franklin Schmidt <fschmidt@gmail.com>
parents:
669
diff
changeset
|
1882 +" @Override public Object doCall(LuanState luan,Object[] args) throws LuanException {\n" |
665 | 1883 +" Object t;\n" |
674 | 1884 +" Object[] a;\n" |
666
2f449ccf54d2
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diff
changeset
|
1885 +" " |
2f449ccf54d2
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diff
changeset
|
1886 ); |
2f449ccf54d2
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diff
changeset
|
1887 exp.list.addAll( stmt.list ); |
2f449ccf54d2
use lists to assemble source
Franklin Schmidt <fschmidt@gmail.com>
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diff
changeset
|
1888 exp.list.add( "" |
665 | 1889 +" }\n" |
667
08966099aa6d
implement Closure directly
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parents:
666
diff
changeset
|
1890 +"}\n" |
666
2f449ccf54d2
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diff
changeset
|
1891 ); |
2f449ccf54d2
use lists to assemble source
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diff
changeset
|
1892 return exp; |
665 | 1893 } |
1894 | |
670
58ebfec6178b
all luan now compiles
Franklin Schmidt <fschmidt@gmail.com>
parents:
669
diff
changeset
|
1895 private static String init(List<UpSym> upValueSymbols) { |
58ebfec6178b
all luan now compiles
Franklin Schmidt <fschmidt@gmail.com>
parents:
669
diff
changeset
|
1896 StringBuilder sb = new StringBuilder(); |
58ebfec6178b
all luan now compiles
Franklin Schmidt <fschmidt@gmail.com>
parents:
669
diff
changeset
|
1897 for( UpSym upSym : upValueSymbols ) { |
58ebfec6178b
all luan now compiles
Franklin Schmidt <fschmidt@gmail.com>
parents:
669
diff
changeset
|
1898 sb.append( upSym.init() ); |
58ebfec6178b
all luan now compiles
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diff
changeset
|
1899 } |
58ebfec6178b
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diff
changeset
|
1900 return sb.toString(); |
58ebfec6178b
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669
diff
changeset
|
1901 } |
663
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finish compiling function blocks
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diff
changeset
|
1902 |
5
9ef0fd711101
start LuaParser
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parents:
diff
changeset
|
1903 } |