Mercurial Hosting > luan
annotate core/src/luan/impl/LuanParser.java @ 654:ea7dbd2dfa65
compile TemplateStmt
author | Franklin Schmidt <fschmidt@gmail.com> |
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date | Tue, 05 Apr 2016 14:16:14 -0600 |
parents | 538b0ae08faa |
children | e2be71451d04 |
rev | line source |
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166
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1 package luan.impl; |
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start LuaParser
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2 |
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3 import java.util.Set; |
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4 import java.util.HashSet; |
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5 import java.util.Arrays; |
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6 import java.util.List; |
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7 import java.util.ArrayList; |
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8 import java.util.Scanner; |
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9 import luan.Luan; |
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10 import luan.LuanState; |
503 | 11 import luan.LuanTable; |
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12 import luan.modules.PackageLuan; |
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13 |
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14 |
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15 final class LuanParser { |
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16 |
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17 private static final class Frame { |
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18 final Frame parent; |
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19 final List<String> symbols = new ArrayList<String>(); |
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20 int stackSize = 0; |
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21 int loops = 0; |
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22 boolean isVarArg = false; |
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23 final List<String> upValueSymbols = new ArrayList<String>(); |
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24 final List<UpValue.Getter> upValueGetters = new ArrayList<UpValue.Getter>(); |
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25 |
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26 Frame(LuanTable java) { |
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27 this.parent = null; |
503 | 28 upValueSymbols.add(JAVA); |
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29 upValueGetters.add(new UpValue.ValueGetter(java)); |
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30 } |
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31 |
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32 Frame(Frame parent) { |
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33 this.parent = parent; |
503 | 34 if( upValueIndex(JAVA) != 0 ) |
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35 throw new RuntimeException(); |
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36 } |
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37 |
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38 int stackIndex(String name) { |
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39 int i = symbols.size(); |
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40 while( --i >= 0 ) { |
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41 if( symbols.get(i).equals(name) ) |
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42 return i; |
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43 } |
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44 return -1; |
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45 } |
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46 |
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47 int upValueIndex(String name) { |
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48 int i = upValueSymbols.size(); |
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49 while( --i >= 0 ) { |
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50 if( upValueSymbols.get(i).equals(name) ) |
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51 return i; |
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52 } |
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53 if( parent==null ) |
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54 return -1; |
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55 i = parent.stackIndex(name); |
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56 if( i != -1 ) { |
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57 upValueGetters.add(new UpValue.StackGetter(i)); |
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58 } else { |
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59 i = parent.upValueIndex(name); |
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60 if( i == -1 ) |
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61 return -1; |
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62 upValueGetters.add(new UpValue.NestedGetter(i)); |
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63 } |
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64 upValueSymbols.add(name); |
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65 return upValueSymbols.size() - 1; |
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66 } |
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67 |
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68 void addUpValueGetter(String name,UpValue.Getter upValueGetter) { |
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69 upValueSymbols.add(name); |
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70 upValueGetters.add(upValueGetter); |
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71 } |
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72 } |
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73 |
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74 private static class In { |
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75 static final In NOTHING = new In(false,false); |
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76 |
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77 final boolean parens; |
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78 final boolean template; |
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79 |
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80 private In(boolean parens,boolean template) { |
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81 this.parens = parens; |
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82 this.template = template; |
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83 } |
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84 |
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85 In parens() { |
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86 return parens ? this : new In(true,false); |
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87 } |
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88 |
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89 In template() { |
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90 return template ? this : new In(false,true); |
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91 } |
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92 } |
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93 |
503 | 94 private static final String JAVA = "-JAVA-"; // inaccessible from Luan |
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95 private static final String _ENV = "_ENV"; |
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96 private static final UpValue.Getter[] NO_UP_VALUE_GETTERS = new UpValue.Getter[0]; |
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97 |
645 | 98 // final LuanSource source; |
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99 private Frame frame; |
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100 private final Parser parser; |
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101 |
645 | 102 LuanParser(String sourceName,String sourceText,LuanTable env) { |
103 // this.source = source; | |
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104 this.frame = new Frame( env!=null ? env : new LuanTable() ); |
645 | 105 this.parser = new Parser(sourceName,sourceText); |
503 | 106 if( env != null ) |
107 addVar(_ENV,env); | |
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108 } |
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109 |
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110 void addVar(String name,Object value) { |
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111 frame.addUpValueGetter(name,new UpValue.ValueGetter(value)); |
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112 } |
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113 |
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114 private List<String> symbols() { |
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115 return frame.symbols; |
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116 } |
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117 |
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118 private int symbolsSize() { |
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119 return frame.symbols.size(); |
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120 } |
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121 |
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122 private void addSymbol(String name) { |
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123 frame.symbols.add(name); |
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124 if( frame.stackSize < symbolsSize() ) |
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125 frame.stackSize = symbolsSize(); |
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126 } |
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127 |
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128 private void addSymbols(List<String> names) { |
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129 frame.symbols.addAll(names); |
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130 if( frame.stackSize < symbolsSize() ) |
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131 frame.stackSize = symbolsSize(); |
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132 } |
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133 |
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134 private int stackIndex(String name) { |
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135 return frame.stackIndex(name); |
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136 } |
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137 |
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138 private void popSymbols(int n) { |
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139 List<String> symbols = frame.symbols; |
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140 while( n-- > 0 ) { |
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141 symbols.remove(symbols.size()-1); |
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142 } |
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143 } |
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144 |
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145 private int upValueIndex(String name) { |
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146 return frame.upValueIndex(name); |
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147 } |
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148 |
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149 private void incLoops() { |
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150 frame.loops++; |
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151 } |
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152 |
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153 private void decLoops() { |
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154 frame.loops--; |
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155 } |
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156 |
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157 private <T> T required(T t) throws ParseException { |
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158 if( t==null ) |
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159 throw parser.exception(); |
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160 return t; |
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161 } |
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162 |
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163 private <T> T required(T t,String msg) throws ParseException { |
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164 if( t==null ) |
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165 throw parser.exception(msg); |
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166 return t; |
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167 } |
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168 |
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169 private static Expr expr(Expressions exprs) { |
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170 if( exprs==null ) |
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171 return null; |
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172 if( exprs instanceof Expr ) |
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173 return (Expr)exprs; |
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174 return new ExpressionsExpr(exprs); |
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175 } |
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176 |
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177 private FnDef newFnDef(int start,Stmt stmt) { |
645 | 178 return new FnDef( stmt, frame.stackSize, symbolsSize(), frame.isVarArg, frame.upValueGetters.toArray(NO_UP_VALUE_GETTERS) ); |
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179 } |
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180 |
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181 FnDef Expression() throws ParseException { |
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182 Spaces(In.NOTHING); |
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183 int start = parser.begin(); |
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184 Expressions expr = exp(ExprZ(In.NOTHING)); |
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185 if( expr != null && parser.endOfInput() ) { |
645 | 186 Stmt stmt = new ReturnStmt( expr ); |
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187 return parser.success(newFnDef(start,stmt)); |
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188 } |
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189 return parser.failure(null); |
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190 } |
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191 |
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192 FnDef RequiredModule() throws ParseException { |
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193 Spaces(In.NOTHING); |
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194 int start = parser.begin(); |
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195 frame.isVarArg = true; |
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196 Stmt stmt = stmt(RequiredBlock()); |
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197 if( parser.endOfInput() ) |
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198 return parser.success(newFnDef(start,stmt)); |
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199 throw parser.exception(); |
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200 } |
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201 |
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202 private StmtString RequiredBlock() throws ParseException { |
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203 StringBuilder stmts = new StringBuilder(); |
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204 int stackStart = symbolsSize(); |
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205 Stmt(stmts); |
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206 while( StmtSep(stmts) ) { |
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207 Spaces(In.NOTHING); |
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208 Stmt(stmts); |
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209 } |
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210 int stackEnd = symbolsSize(); |
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211 popSymbols( stackEnd - stackStart ); |
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212 if( stmts.length() == 0 ) |
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213 return EMPTY_STMT; |
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214 String code = stmts.toString(); |
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215 if( stackStart < stackEnd ) |
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216 code = "" |
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217 +"try {\n" |
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218 + code |
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219 +"} finally {\n" |
654 | 220 +" luan.stackClear("+stackStart+","+stackEnd+");\n" |
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221 +"}\n" |
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222 ; |
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223 return new StmtString(code); |
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224 } |
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225 |
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226 private boolean StmtSep(StringBuilder stmts) throws ParseException { |
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227 parser.begin(); |
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228 if( parser.match( ';' ) ) |
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229 return parser.success(); |
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230 if( EndOfLine() ) |
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231 return parser.success(); |
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232 parser.rollback(); |
654 | 233 StmtString stmt = TemplateStmt(); |
157
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234 if( stmt != null ) { |
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235 stmts.append(stmt.code); |
157
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236 return parser.success(); |
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237 } |
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238 return parser.failure(); |
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239 } |
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240 |
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241 private boolean EndOfLine() { |
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242 return parser.match( "\r\n" ) || parser.match( '\r' ) || parser.match( '\n' ); |
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243 } |
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244 |
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245 private void Stmt(StringBuilder stmts) throws ParseException { |
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246 if( LocalStmt(stmts) ) |
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247 return; |
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248 StmtString stmt; |
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249 if( (stmt=stmtStr(ReturnStmt())) != null |
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250 || (stmt=stmtStr(FunctionStmt())) != null |
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251 || (stmt=stmtStr(LocalFunctionStmt())) != null |
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252 || (stmt=BreakStmt()) != null |
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253 || (stmt=ForStmt()) != null |
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254 || (stmt=DoStmt()) != null |
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255 || (stmt=WhileStmt()) != null |
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256 || (stmt=RepeatStmt()) != null |
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257 || (stmt=IfStmt()) != null |
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258 || (stmt=SetStmt()) != null |
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259 || (stmt=ExpressionsStmt()) != null |
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260 ) { |
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261 stmts.append(stmt.code); |
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262 } |
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263 } |
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264 |
654 | 265 private ExpString indexExpStr(ExpString exp1,ExpString exp2) { |
266 String code = "luan.index(" + exp1.expr().code + "," + exp2.expr().code + ")"; | |
267 return new ExpString(code,true,false); | |
268 } | |
269 | |
270 private ExpString constExpStr(Object obj) { | |
271 return new ExpString(new ConstExpr(obj)); | |
272 } | |
273 | |
274 private ExpString callExpStr(ExpString fn,ExpString args) { | |
275 String code = "Luan.checkFunction(" + fn.expr().code + ").call(luan,Luan.array(" + args.code + "))"; | |
276 return new ExpString(code,false,true); | |
277 } | |
278 | |
279 private StmtString TemplateStmt() throws ParseException { | |
280 ExpString exprs = TemplateExpressions(In.NOTHING); | |
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281 if( exprs == null ) |
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282 return null; |
654 | 283 ExpString requireCall = callExpStr( constExpStr(PackageLuan.requireFn), constExpStr("luan:Io") ); |
284 ExpString stdoutExp = indexExpStr( requireCall.expr(), constExpStr("stdout") ); | |
285 ExpString writeExp = indexExpStr( stdoutExp, constExpStr("write") ); | |
286 ExpString writeCall = callExpStr( writeExp, exprs ); | |
287 String code = writeCall.code + ";\n"; | |
288 return new StmtString(code); | |
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289 } |
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290 |
654 | 291 private ExpString TemplateExpressions(In in) throws ParseException { |
157
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292 if( in.template ) |
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293 return null; |
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294 int start = parser.begin(); |
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295 if( !parser.match( "%>" ) ) |
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296 return parser.failure(null); |
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297 EndOfLine(); |
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298 In inTemplate = in.template(); |
654 | 299 List<ExpString> builder = new ArrayList<ExpString>(); |
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300 while(true) { |
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301 if( parser.match( "<%=" ) ) { |
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302 Spaces(inTemplate); |
654 | 303 builder.add( RequiredExpr(inTemplate) ); |
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304 RequiredMatch( "%>" ); |
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305 } else if( parser.match( "<%" ) ) { |
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306 Spaces(inTemplate); |
654 | 307 return parser.success(expString(builder)); |
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308 } else { |
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309 int i = parser.currentIndex(); |
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310 do { |
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311 if( parser.match( "%>" ) ) |
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312 throw parser.exception("'%>' unexpected"); |
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313 if( !parser.anyChar() ) |
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314 throw parser.exception("Unclosed template expression"); |
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315 } while( !parser.test( "<%" ) ); |
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316 String match = parser.textFrom(i); |
654 | 317 builder.add( constExpStr(match) ); |
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318 } |
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319 } |
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320 } |
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321 |
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322 private Stmt ReturnStmt() throws ParseException { |
645 | 323 parser.begin(); |
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324 if( !Keyword("return",In.NOTHING) ) |
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325 return parser.failure(null); |
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326 Expressions exprs = ExpList(In.NOTHING); |
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327 if( exprs==null ) |
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328 exprs = ExpList.emptyExpList; |
645 | 329 return parser.success( new ReturnStmt(exprs) ); |
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330 } |
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331 |
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332 private Stmt FunctionStmt() throws ParseException { |
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333 parser.begin(); |
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334 if( !Keyword("function",In.NOTHING) ) |
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335 return parser.failure(null); |
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336 |
645 | 337 parser.currentIndex(); |
338 Var var = nameVar(RequiredName(In.NOTHING)); | |
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339 while( parser.match( '.' ) ) { |
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340 Spaces(In.NOTHING); |
636 | 341 Expr exp = NameExpr(In.NOTHING); |
342 if( exp==null ) | |
343 return parser.failure(null); | |
645 | 344 var = indexVar( expr(var.expr()), exp ); |
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345 } |
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346 Settable fnName = var.settable(); |
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347 |
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348 FnDef fnDef = RequiredFunction(In.NOTHING); |
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349 return parser.success( new SetStmt(fnName,fnDef) ); |
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350 } |
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351 |
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352 private Stmt LocalFunctionStmt() throws ParseException { |
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353 parser.begin(); |
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354 if( !(Keyword("local",In.NOTHING) && Keyword("function",In.NOTHING)) ) |
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355 return parser.failure(null); |
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356 String name = RequiredName(In.NOTHING); |
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357 addSymbol( name ); |
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358 FnDef fnDef = RequiredFunction(In.NOTHING); |
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359 return parser.success( new SetStmt( new SetLocalVar(symbolsSize()-1), fnDef ) ); |
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360 } |
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361 |
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362 private StmtString BreakStmt() throws ParseException { |
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363 parser.begin(); |
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364 if( !Keyword("break",In.NOTHING) ) |
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365 return parser.failure(null); |
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366 if( frame.loops <= 0 ) |
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367 throw parser.exception("'break' outside of loop"); |
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368 return parser.success( new StmtString("break;\n") ); |
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369 } |
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370 |
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371 int forCounter = 0; |
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372 |
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373 private StmtString ForStmt() throws ParseException { |
645 | 374 parser.begin(); |
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375 int stackStart = symbolsSize(); |
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376 if( !Keyword("for",In.NOTHING) ) |
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377 return parser.failure(null); |
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378 List<String> names = RequiredNameList(In.NOTHING); |
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379 if( !Keyword("in",In.NOTHING) ) |
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380 return parser.failure(null); |
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381 ExpString expr = RequiredExpr(In.NOTHING).expr(); |
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382 RequiredKeyword("do",In.NOTHING); |
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383 |
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384 SetLocalVar[] vars = new SetLocalVar[names.size()]; |
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385 for( int i=0; i<vars.length; i++ ) { |
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386 vars[i] = new SetLocalVar(stackStart+i); |
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387 } |
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388 String varsStr = varsToString(vars); |
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389 |
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390 ExpString firstVar = new ExpString(new GetLocalVar(stackStart)); |
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391 addSymbols(names); |
652
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392 StmtString loop = RequiredLoopBlock(); |
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393 RequiredKeyword("end",In.NOTHING); |
654 | 394 String fnVar = "fn"+ ++forCounter; |
652
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395 String code = "" |
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396 +"try {\n" |
654 | 397 +"LuanFunction "+fnVar+" = Luan.checkFunction(" + expr.code + ");\n" |
652
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398 +"while(true) {\n" |
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399 +"for( int i="+stackStart+"; i<"+symbolsSize()+"; i++ ) {\n" |
654 | 400 +"luan.stackSet(i,null);\n" |
652
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401 +"}\n" |
654 | 402 +"LuanImpl.set(luan," + varsStr + ", "+fnVar+".call(luan) );\n" |
652
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403 +"if( " + firstVar.code + "==null ) break;\n" |
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404 + loop.code |
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405 +"}" |
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406 +"} finally {\n" |
654 | 407 +"luan.stackClear("+stackStart+","+symbolsSize()+");\n" |
652
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408 +"}\n" |
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409 ; |
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410 StmtString stmt = new StmtString(code); |
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411 popSymbols( symbolsSize() - stackStart ); |
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412 return parser.success(stmt); |
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413 } |
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414 |
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415 private StmtString DoStmt() throws ParseException { |
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416 parser.begin(); |
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417 if( !Keyword("do",In.NOTHING) ) |
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418 return parser.failure(null); |
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419 StmtString stmt = RequiredBlock(); |
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420 RequiredKeyword("end",In.NOTHING); |
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421 return parser.success(stmt); |
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422 } |
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423 |
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424 private boolean LocalStmt(StringBuilder stmts) throws ParseException { |
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425 parser.begin(); |
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426 if( !Keyword("local",In.NOTHING) ) |
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427 return parser.failure(); |
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428 List<String> names = NameList(In.NOTHING); |
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429 if( names==null ) { |
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430 if( Keyword("function",In.NOTHING) ) |
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431 return parser.failure(); // handled later |
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432 throw parser.exception("Invalid local statement"); |
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433 } |
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434 if( parser.match( '=' ) ) { |
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435 Spaces(In.NOTHING); |
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436 ExpString values = ExpStringList(In.NOTHING); |
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437 if( values==null ) |
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438 throw parser.exception("Expressions expected"); |
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439 SetLocalVar[] vars = new SetLocalVar[names.size()]; |
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440 int stackStart = symbolsSize(); |
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441 for( int i=0; i<vars.length; i++ ) { |
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442 vars[i] = new SetLocalVar(stackStart+i); |
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443 } |
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444 String varsStr = varsToString(vars); |
654 | 445 String code = "LuanImpl.set(luan," + varsStr + "," + values.code + ");\n"; |
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446 stmts.append(code); |
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447 } |
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448 addSymbols(names); |
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449 return parser.success(); |
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450 } |
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451 |
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452 private List<String> RequiredNameList(In in) throws ParseException { |
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453 parser.begin(); |
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454 List<String> names = NameList(in); |
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455 if( names==null ) |
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456 throw parser.exception("Name expected"); |
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457 return parser.success(names); |
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458 } |
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459 |
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460 private List<String> NameList(In in) throws ParseException { |
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461 String name = Name(in); |
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462 if( name==null ) |
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463 return null; |
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464 List<String> names = new ArrayList<String>(); |
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465 names.add(name); |
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466 while( (name=anotherName(in)) != null ) { |
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467 names.add(name); |
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468 } |
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469 return names; |
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470 } |
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471 |
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472 private String anotherName(In in) throws ParseException { |
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473 parser.begin(); |
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474 if( !parser.match( ',' ) ) |
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475 return parser.failure(null); |
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476 Spaces(in); |
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477 String name = Name(in); |
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478 if( name==null ) |
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479 return parser.failure(null); |
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480 return parser.success(name); |
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481 } |
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482 |
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483 private StmtString WhileStmt() throws ParseException { |
645 | 484 parser.begin(); |
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485 if( !Keyword("while",In.NOTHING) ) |
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486 return parser.failure(null); |
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487 ExpString cnd = RequiredExpr(In.NOTHING).expr(); |
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488 RequiredKeyword("do",In.NOTHING); |
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489 StmtString loop = RequiredLoopBlock(); |
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490 RequiredKeyword("end",In.NOTHING); |
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491 String code = "" |
654 | 492 +"while( Luan.checkBoolean(" + cnd.code + ") ) {\n" |
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493 + loop.code |
653
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494 +"}\n" |
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495 ; |
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496 return parser.success( new StmtString(code) ); |
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497 } |
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498 |
651
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499 private StmtString RepeatStmt() throws ParseException { |
645 | 500 parser.begin(); |
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501 if( !Keyword("repeat",In.NOTHING) ) |
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502 return parser.failure(null); |
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503 StmtString loop =RequiredLoopBlock(); |
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504 RequiredKeyword("until",In.NOTHING); |
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505 ExpString cnd = RequiredExpr(In.NOTHING).expr(); |
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506 String code = "" |
653
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507 +"do {\n" |
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508 + loop.code |
654 | 509 +"} while( !Luan.checkBoolean(" + cnd.code + ") );\n" |
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510 ; |
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511 return parser.success( new StmtString(code) ); |
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512 } |
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513 |
651
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514 private StmtString RequiredLoopBlock() throws ParseException { |
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515 incLoops(); |
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516 StmtString stmt = RequiredBlock(); |
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517 decLoops(); |
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518 return stmt; |
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519 } |
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520 |
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521 private StmtString IfStmt() throws ParseException { |
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522 parser.begin(); |
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523 if( !Keyword("if",In.NOTHING) ) |
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524 return parser.failure(null); |
653
538b0ae08faa
compile IfStmt and BreakStmt
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525 StringBuilder sb = new StringBuilder(); |
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diff
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526 ExpString cnd; |
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|
527 StmtString block; |
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compile IfStmt and BreakStmt
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528 cnd = RequiredExpr(In.NOTHING).expr(); |
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529 RequiredKeyword("then",In.NOTHING); |
653
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530 block = RequiredBlock(); |
654 | 531 sb.append( "if( Luan.checkBoolean(" ).append( cnd.code ).append( ") ) {\n" ).append( block.code ); |
653
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parents:
652
diff
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532 while( Keyword("elseif",In.NOTHING) ) { |
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533 cnd = RequiredExpr(In.NOTHING).expr(); |
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534 RequiredKeyword("then",In.NOTHING); |
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compile IfStmt and BreakStmt
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changeset
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535 block = RequiredBlock(); |
654 | 536 sb.append( "} else if( Luan.checkBoolean(" ).append( cnd.code ).append( ") ) {\n" ).append( block.code ); |
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537 } |
653
538b0ae08faa
compile IfStmt and BreakStmt
Franklin Schmidt <fschmidt@gmail.com>
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538 if( Keyword("else",In.NOTHING) ) { |
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compile IfStmt and BreakStmt
Franklin Schmidt <fschmidt@gmail.com>
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652
diff
changeset
|
539 block = RequiredBlock(); |
538b0ae08faa
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Franklin Schmidt <fschmidt@gmail.com>
parents:
652
diff
changeset
|
540 sb.append( "} else {\n" ).append( block.code ); |
538b0ae08faa
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652
diff
changeset
|
541 } |
538b0ae08faa
compile IfStmt and BreakStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
652
diff
changeset
|
542 RequiredKeyword("end",In.NOTHING); |
538b0ae08faa
compile IfStmt and BreakStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
652
diff
changeset
|
543 sb.append( "}\n" ); |
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parents:
652
diff
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544 return parser.success( new StmtString(sb.toString()) ); |
20
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|
545 } |
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546 |
652
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547 private StmtString SetStmt() throws ParseException { |
104
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548 parser.begin(); |
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549 List<Settable> vars = new ArrayList<Settable>(); |
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550 Settable s = SettableVar(); |
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551 if( s == null ) |
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552 return parser.failure(null); |
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553 vars.add(s); |
754e6030c029
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changeset
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554 while( parser.match( ',' ) ) { |
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555 Spaces(In.NOTHING); |
104
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556 s = SettableVar(); |
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557 if( s == null ) |
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558 return parser.failure(null); |
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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559 vars.add(s); |
754e6030c029
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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560 } |
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parents:
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561 if( !parser.match( '=' ) ) |
754e6030c029
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562 return parser.failure(null); |
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changeset
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563 Spaces(In.NOTHING); |
652
067d9470184d
compile SetStmt and ForStmt
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parents:
651
diff
changeset
|
564 ExpString values = ExpStringList(In.NOTHING); |
104
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565 if( values==null ) |
274
8afe9f2fdfec
AB testing, not fully tested
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566 // throw parser.exception("Expressions expected"); |
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567 return parser.failure(null); |
652
067d9470184d
compile SetStmt and ForStmt
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diff
changeset
|
568 String varsStr = varsToString(vars.toArray(new Settable[0])); |
654 | 569 String code = "LuanImpl.set(luan," + varsStr + "," + values.code + "); "; |
652
067d9470184d
compile SetStmt and ForStmt
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parents:
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diff
changeset
|
570 return parser.success( new StmtString(code) ); |
067d9470184d
compile SetStmt and ForStmt
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diff
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|
571 } |
067d9470184d
compile SetStmt and ForStmt
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parents:
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diff
changeset
|
572 |
067d9470184d
compile SetStmt and ForStmt
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diff
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573 private static String varsToString(Settable[] vars) { |
067d9470184d
compile SetStmt and ForStmt
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diff
changeset
|
574 StringBuilder sb = new StringBuilder(); |
067d9470184d
compile SetStmt and ForStmt
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parents:
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diff
changeset
|
575 sb.append( "new Settable[]{" ); |
067d9470184d
compile SetStmt and ForStmt
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diff
changeset
|
576 for( Settable v : vars ) { |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
577 sb.append( new SettableString(v).code ).append( ',' ); |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
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diff
changeset
|
578 } |
067d9470184d
compile SetStmt and ForStmt
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diff
changeset
|
579 sb.append( "}" ); |
067d9470184d
compile SetStmt and ForStmt
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diff
changeset
|
580 return sb.toString(); |
104
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581 } |
754e6030c029
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changeset
|
582 |
651
140cc5191b7a
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diff
changeset
|
583 private StmtString ExpressionsStmt() throws ParseException { |
104
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|
584 parser.begin(); |
651
140cc5191b7a
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diff
changeset
|
585 ExpString exp = ExprZ(In.NOTHING); |
140cc5191b7a
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650
diff
changeset
|
586 if( exp != null && exp.isStmt ) { |
140cc5191b7a
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diff
changeset
|
587 String code = exp.code; |
140cc5191b7a
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diff
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|
588 if( exp.isExpr ) |
654 | 589 code = "LuanImpl.nop(" + code + ")"; |
651
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start compiling statements
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diff
changeset
|
590 code += ";\n"; |
140cc5191b7a
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diff
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591 return parser.success( new StmtString(code) ); |
140cc5191b7a
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diff
changeset
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592 } |
159
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revert rev 154 but only allow FnCall, AndExpr, or OrExpr in ExpressionsStmt
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593 return parser.failure(null); |
104
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594 } |
754e6030c029
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595 |
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596 private Settable SettableVar() throws ParseException { |
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597 int start = parser.begin(); |
129
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598 Var var = VarZ(In.NOTHING); |
104
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|
599 if( var==null ) |
155
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|
600 return parser.failure(null); |
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601 return parser.success( var.settable() ); |
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602 } |
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parents:
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603 |
650
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changeset
|
604 private ExpString RequiredExpr(In in) throws ParseException { |
129
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605 parser.begin(); |
211
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606 return parser.success(required(ExprZ(in),"Bad expression")); |
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607 } |
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608 |
650
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609 private ExpString ExprZ(In in) throws ParseException { |
449 | 610 return OrExpr(in); |
19
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611 } |
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612 |
650
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613 private ExpString OrExpr(In in) throws ParseException { |
645 | 614 parser.begin(); |
650
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615 ExpString exp = AndExpr(in); |
104
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616 if( exp==null ) |
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617 return parser.failure(null); |
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618 while( Keyword("or",in) ) { |
650
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619 exp = exp.expr(); |
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620 ExpString exp2 = required(RelExpr(in)).expr(); |
654 | 621 String code = "(LuanImpl.cnd(cnd = " + exp.code + ") ? cnd : (" + exp2.code + "))"; |
650
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changeset
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622 exp = new ExpString(code,true,true); |
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623 } |
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624 return parser.success(exp); |
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625 } |
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626 |
650
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changeset
|
627 private ExpString AndExpr(In in) throws ParseException { |
645 | 628 parser.begin(); |
650
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diff
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629 ExpString exp = RelExpr(in); |
104
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630 if( exp==null ) |
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631 return parser.failure(null); |
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632 while( Keyword("and",in) ) { |
650
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changeset
|
633 exp = exp.expr(); |
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changeset
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634 ExpString exp2 = required(RelExpr(in)).expr(); |
654 | 635 String code = "(LuanImpl.cnd(cnd = " + exp.code + ") ? (" + exp2.code + ") : cnd)"; |
650
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636 exp = new ExpString(code,true,true); |
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637 } |
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638 return parser.success(exp); |
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639 } |
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640 |
650
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641 private ExpString RelExpr(In in) throws ParseException { |
645 | 642 parser.begin(); |
650
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643 ExpString exp = ConcatExpr(in); |
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644 if( exp==null ) |
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645 return parser.failure(null); |
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646 while(true) { |
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647 if( parser.match("==") ) { |
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648 Spaces(in); |
650
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649 exp = exp.expr(); |
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650 ExpString exp2 = required(ConcatExpr(in)).expr(); |
654 | 651 String code = "LuanImpl.eq(luan," + exp.code + "," + exp2.code + ")"; |
650
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652 exp = new ExpString(code,true,false); |
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653 } else if( parser.match("~=") ) { |
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654 Spaces(in); |
650
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655 exp = exp.expr(); |
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656 ExpString exp2 = required(ConcatExpr(in)).expr(); |
654 | 657 String code = "!LuanImpl.eq(luan," + exp.code + "," + exp2.code + ")"; |
650
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658 exp = new ExpString(code,true,false); |
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659 } else if( parser.match("<=") ) { |
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660 Spaces(in); |
650
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661 exp = exp.expr(); |
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662 ExpString exp2 = required(ConcatExpr(in)).expr(); |
654 | 663 String code = "LuanImpl.le(luan," + exp.code + "," + exp2.code + ")"; |
650
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664 exp = new ExpString(code,true,false); |
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665 } else if( parser.match(">=") ) { |
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666 Spaces(in); |
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667 exp = exp.expr(); |
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668 ExpString exp2 = required(ConcatExpr(in)).expr(); |
654 | 669 String code = "LuanImpl.le(luan," + exp2.code + "," + exp.code + ")"; |
650
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670 exp = new ExpString(code,true,false); |
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671 } else if( parser.match("<") ) { |
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672 Spaces(in); |
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673 exp = exp.expr(); |
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674 ExpString exp2 = required(ConcatExpr(in)).expr(); |
654 | 675 String code = "LuanImpl.lt(luan," + exp.code + "," + exp2.code + ")"; |
650
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676 exp = new ExpString(code,true,false); |
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677 } else if( parser.match(">") ) { |
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678 Spaces(in); |
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679 exp = exp.expr(); |
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680 ExpString exp2 = required(ConcatExpr(in)).expr(); |
654 | 681 String code = "LuanImpl.lt(luan," + exp2.code + "," + exp.code + ")"; |
650
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682 exp = new ExpString(code,true,false); |
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683 } else |
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684 break; |
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685 } |
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686 return parser.success(exp); |
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687 } |
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688 |
650
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689 private ExpString ConcatExpr(In in) throws ParseException { |
645 | 690 parser.begin(); |
650
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691 ExpString exp = SumExpr(in); |
104
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692 if( exp==null ) |
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693 return parser.failure(null); |
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694 if( parser.match("..") ) { |
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695 Spaces(in); |
650
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696 exp = exp.expr(); |
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697 ExpString exp2 = required(ConcatExpr(in)).expr(); |
654 | 698 String code = "LuanImpl.concat(luan," + exp.code + "," + exp2.code + ")"; |
650
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699 exp = new ExpString(code,true,false); |
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700 } |
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701 return parser.success(exp); |
28
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702 } |
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703 |
650
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704 private ExpString SumExpr(In in) throws ParseException { |
645 | 705 parser.begin(); |
650
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706 ExpString exp = TermExpr(in); |
104
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707 if( exp==null ) |
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708 return parser.failure(null); |
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709 while(true) { |
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710 if( parser.match('+') ) { |
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711 Spaces(in); |
650
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712 exp = exp.expr(); |
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713 ExpString exp2 = required(TermExpr(in)).expr(); |
654 | 714 String code = "LuanImpl.add(luan," + exp.code + "," + exp2.code + ")"; |
650
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715 exp = new ExpString(code,true,false); |
104
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716 } else if( Minus() ) { |
129
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717 Spaces(in); |
650
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718 exp = exp.expr(); |
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719 ExpString exp2 = required(TermExpr(in)).expr(); |
654 | 720 String code = "LuanImpl.sub(luan," + exp.code + "," + exp2.code + ")"; |
650
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721 exp = new ExpString(code,true,false); |
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722 } else |
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723 break; |
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724 } |
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725 return parser.success(exp); |
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726 } |
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727 |
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728 private boolean Minus() { |
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729 parser.begin(); |
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730 return parser.match('-') && !parser.match('-') ? parser.success() : parser.failure(); |
12
9cea1aea5eef
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731 } |
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732 |
650
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733 private ExpString TermExpr(In in) throws ParseException { |
645 | 734 parser.begin(); |
650
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735 ExpString exp = UnaryExpr(in); |
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736 if( exp==null ) |
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737 return parser.failure(null); |
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738 while(true) { |
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739 if( parser.match('*') ) { |
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740 Spaces(in); |
650
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741 exp = exp.expr(); |
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742 ExpString exp2 = required(UnaryExpr(in)).expr(); |
654 | 743 String code = "LuanImpl.mul(luan," + exp.code + "," + exp2.code + ")"; |
650
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744 exp = new ExpString(code,true,false); |
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745 } else if( parser.match('/') ) { |
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746 Spaces(in); |
650
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747 exp = exp.expr(); |
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748 ExpString exp2 = required(UnaryExpr(in)).expr(); |
654 | 749 String code = "LuanImpl.div(luan," + exp.code + "," + exp2.code + ")"; |
650
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750 exp = new ExpString(code,true,false); |
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751 } else if( Mod() ) { |
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752 Spaces(in); |
650
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753 exp = exp.expr(); |
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754 ExpString exp2 = required(UnaryExpr(in)).expr(); |
654 | 755 String code = "LuanImpl.mod(luan," + exp.code + "," + exp2.code + ")"; |
650
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756 exp = new ExpString(code,true,false); |
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757 } else |
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758 break; |
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759 } |
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760 return parser.success(exp); |
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761 } |
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762 |
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763 private boolean Mod() { |
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764 parser.begin(); |
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765 return parser.match('%') && !parser.match('>') ? parser.success() : parser.failure(); |
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766 } |
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767 |
649
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768 private ExpString UnaryExpr(In in) throws ParseException { |
645 | 769 parser.begin(); |
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770 if( parser.match('#') ) { |
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771 Spaces(in); |
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772 ExpString exp = required(UnaryExpr(in)).expr(); |
654 | 773 String code = "LuanImpl.len(luan," + exp.code + ")"; |
649
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774 exp = new ExpString(code,true,false); |
648
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775 return parser.success(exp); |
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776 } |
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777 if( Minus() ) { |
129
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778 Spaces(in); |
649
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|
779 ExpString exp = required(UnaryExpr(in)).expr(); |
654 | 780 String code = "LuanImpl.unm(luan," + exp.code + ")"; |
649
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|
781 exp = new ExpString(code,true,false); |
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782 return parser.success(exp); |
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783 } |
129
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784 if( Keyword("not",in) ) { |
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785 Spaces(in); |
649
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|
786 ExpString exp = required(UnaryExpr(in)).expr(); |
654 | 787 String code = "!Luan.checkBoolean(" + exp.code + ")"; |
649
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|
788 exp = new ExpString(code,true,false); |
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|
789 return parser.success(exp); |
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790 } |
650
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791 ExpString exp = PowExpr(in); |
104
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792 if( exp==null ) |
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793 return parser.failure(null); |
650
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|
794 return parser.success(exp); |
104
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795 } |
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796 |
650
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797 private ExpString PowExpr(In in) throws ParseException { |
645 | 798 parser.begin(); |
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799 Expressions exp = SingleExpr(in); |
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800 if( exp==null ) |
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801 return parser.failure(null); |
650
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802 ExpString exp1 = new ExpString(exp); |
104
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803 if( parser.match('^') ) { |
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804 Spaces(in); |
650
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|
805 ExpString exp2 = required(PowExpr(in)); |
654 | 806 String code = "LuanImpl.pow(luan," + exp1.code + "," + exp2.code + ")"; |
650
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807 exp1 = new ExpString(code,true,false); |
104
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808 } |
650
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809 return parser.success(exp1); |
14
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810 } |
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811 |
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812 private Expressions SingleExpr(In in) throws ParseException { |
104
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813 parser.begin(); |
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814 Expressions exp; |
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815 exp = FunctionExpr(in); |
104
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816 if( exp != null ) |
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817 return parser.success(exp); |
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818 exp = VarExp(in); |
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819 if( exp != null ) |
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820 return parser.success(exp); |
449 | 821 exp = VarArgs(in); |
104
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822 if( exp != null ) |
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823 return parser.success(exp); |
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824 return parser.failure(null); |
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825 } |
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826 |
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827 private Expr FunctionExpr(In in) throws ParseException { |
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828 if( !Keyword("function",in) ) |
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829 return null; |
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830 return RequiredFunction(in); |
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831 } |
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832 |
129
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833 private FnDef RequiredFunction(In in) throws ParseException { |
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834 int start = parser.begin(); |
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835 RequiredMatch('('); |
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836 In inParens = in.parens(); |
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837 Spaces(inParens); |
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838 frame = new Frame(frame); |
129
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839 List<String> names = NameList(in); |
104
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840 if( names != null ) { |
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841 addSymbols(names); |
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842 if( parser.match(',') ) { |
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843 Spaces(inParens); |
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844 if( !parser.match("...") ) |
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845 throw parser.exception(); |
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846 Spaces(inParens); |
104
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847 frame.isVarArg = true; |
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848 } |
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849 } else if( parser.match("...") ) { |
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850 Spaces(inParens); |
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851 frame.isVarArg = true; |
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852 } |
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853 RequiredMatch(')'); |
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854 Spaces(in); |
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855 Stmt block = stmt(RequiredBlock()); |
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856 RequiredKeyword("end",in); |
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857 FnDef fnDef = newFnDef(start,block); |
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858 frame = frame.parent; |
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859 return parser.success(fnDef); |
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860 } |
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861 |
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862 private VarArgs VarArgs(In in) throws ParseException { |
645 | 863 parser.begin(); |
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864 if( !frame.isVarArg || !parser.match("...") ) |
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865 return parser.failure(null); |
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866 Spaces(in); |
645 | 867 return parser.success( new VarArgs() ); |
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868 } |
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869 |
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870 private Expr TableExpr(In in) throws ParseException { |
645 | 871 parser.begin(); |
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872 if( !parser.match('{') ) |
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873 return parser.failure(null); |
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874 Spaces(In.NOTHING); |
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875 List<TableExpr.Field> fields = new ArrayList<TableExpr.Field>(); |
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876 List<Expressions> builder = new ArrayList<Expressions>(); |
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877 Field(fields,builder); |
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878 while( FieldSep() ) { |
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879 Spaces(In.NOTHING); |
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880 Field(fields,builder); |
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881 } |
654 | 882 Expressions exp = exp(TemplateExpressions(In.NOTHING)); |
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883 if( exp != null ) |
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884 builder.add(exp); |
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885 if( !parser.match('}') ) |
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886 throw parser.exception("Expected table element or '}'"); |
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887 Spaces(in); |
645 | 888 return parser.success( new TableExpr( fields.toArray(new TableExpr.Field[0]), ExpList.build(builder) ) ); |
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889 } |
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890 |
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891 private boolean FieldSep() throws ParseException { |
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892 return parser.anyOf(",;") || EndOfLine(); |
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893 } |
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894 |
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895 private boolean Field(List<TableExpr.Field> fields,List<Expressions> builder) throws ParseException { |
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896 parser.begin(); |
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897 Expr exp = SubExpr(In.NOTHING); |
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898 if( exp==null ) |
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899 exp = NameExpr(In.NOTHING); |
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900 if( exp!=null && parser.match('=') ) { |
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901 Spaces(In.NOTHING); |
650
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902 fields.add( new TableExpr.Field( exp, required(expr(exp(ExprZ(In.NOTHING)))) ) ); |
104
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903 return parser.success(); |
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904 } |
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905 parser.rollback(); |
650
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906 Expressions exprs = exp(ExprZ(In.NOTHING)); |
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907 if( exprs != null ) { |
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908 builder.add(exprs); |
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909 return parser.success(); |
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910 } |
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911 return parser.failure(); |
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912 } |
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913 |
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914 private Expressions VarExp(In in) throws ParseException { |
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915 Var var = VarZ(in); |
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916 return var==null ? null : var.expr(); |
8
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917 } |
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918 |
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919 private Var VarZ(In in) throws ParseException { |
645 | 920 parser.begin(); |
921 Var var = VarStart(in); | |
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922 if( var==null ) |
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923 return parser.failure(null); |
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924 Var var2; |
645 | 925 while( (var2=Var2(in,var.expr())) != null ) { |
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926 var = var2; |
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927 } |
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928 return parser.success(var); |
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929 } |
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930 |
645 | 931 private Var VarStart(In in) throws ParseException { |
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932 if( parser.match('(') ) { |
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933 In inParens = in.parens(); |
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934 Spaces(inParens); |
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935 Expr exp = expr(exp(RequiredExpr(inParens))); |
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936 RequiredMatch(')'); |
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937 Spaces(in); |
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938 return exprVar(exp); |
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939 } |
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940 String name = Name(in); |
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941 if( name != null ) |
645 | 942 return nameVar(name); |
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943 Expressions exp; |
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944 exp = TableExpr(in); |
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945 if( exp != null ) |
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946 return exprVar(exp); |
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947 exp = Literal(in); |
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948 if( exp != null ) |
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949 return exprVar(exp); |
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950 return null; |
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951 } |
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952 |
645 | 953 private Var Var2(In in,Expressions exp1) throws ParseException { |
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954 parser.begin(); |
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955 Expr exp2 = SubExpr(in); |
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956 if( exp2 != null ) |
645 | 957 return parser.success(indexVar(expr(exp1),exp2)); |
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958 if( parser.match('.') ) { |
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959 Spaces(in); |
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960 exp2 = NameExpr(in); |
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961 if( exp2!=null ) |
645 | 962 return parser.success(indexVar(expr(exp1),exp2)); |
636 | 963 return parser.failure(null); |
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964 } |
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965 FnCall fnCall = Args( in, expr(exp1), new ArrayList<ExpString>() ); |
206
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966 if( fnCall != null ) |
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967 return parser.success(exprVar(fnCall)); |
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968 return parser.failure(null); |
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969 } |
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970 |
503 | 971 private interface Var { |
972 public Expressions expr() throws ParseException; | |
973 public Settable settable() throws ParseException; | |
974 } | |
975 | |
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976 private Expr env() { |
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977 int index = stackIndex(_ENV); |
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978 if( index != -1 ) |
645 | 979 return new GetLocalVar(index); |
34
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980 index = upValueIndex(_ENV); |
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981 if( index != -1 ) |
645 | 982 return new GetUpVar(index); |
503 | 983 return null; |
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984 } |
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985 |
645 | 986 private Var nameVar(final String name) { |
104
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987 return new Var() { |
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988 |
503 | 989 public Expr expr() throws ParseException { |
104
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990 int index = stackIndex(name); |
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991 if( index != -1 ) |
645 | 992 return new GetLocalVar(index); |
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993 index = upValueIndex(name); |
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994 if( index != -1 ) |
645 | 995 return new GetUpVar(index); |
503 | 996 Expr envExpr = env(); |
997 if( envExpr != null ) | |
645 | 998 return new IndexExpr( envExpr, new ConstExpr(name) ); |
503 | 999 parser.failure(null); |
1000 throw parser.exception("name '"+name+"' not defined"); | |
104
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1001 } |
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1002 |
503 | 1003 public Settable settable() throws ParseException { |
104
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1004 int index = stackIndex(name); |
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1005 if( index != -1 ) |
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1006 return new SetLocalVar(index); |
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1007 index = upValueIndex(name); |
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1008 if( index != -1 ) |
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1009 return new SetUpVar(index); |
503 | 1010 Expr envExpr = env(); |
1011 if( envExpr != null ) | |
645 | 1012 return new SetTableEntry( envExpr, new ConstExpr(name) ); |
503 | 1013 parser.failure(null); |
1014 throw parser.exception("name '"+name+"' not defined"); | |
104
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1015 } |
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1016 }; |
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1017 } |
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1018 |
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1019 private Var exprVar(final Expressions expr) { |
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1020 return new Var() { |
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1021 |
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1022 public Expressions expr() { |
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1023 return expr; |
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1024 } |
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1025 |
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1026 public Settable settable() { |
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1027 return null; |
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1028 } |
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1029 }; |
11
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1030 } |
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1031 |
645 | 1032 private Var indexVar(final Expr table,final Expr key) { |
104
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1033 return new Var() { |
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1034 |
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1035 public Expr expr() { |
645 | 1036 return new IndexExpr( table, key ); |
104
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1037 } |
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1038 |
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1039 public Settable settable() { |
645 | 1040 return new SetTableEntry(table,key); |
104
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1041 } |
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1042 }; |
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1043 } |
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1044 |
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1045 private FnCall Args(In in,Expr fn,List<ExpString> builder) throws ParseException { |
104
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1046 parser.begin(); |
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1047 return args(in,builder) |
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1048 ? parser.success( new FnCall( fn, ExpList.build(expList(builder)) ) ) |
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1049 : parser.failure((FnCall)null); |
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1050 } |
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1051 |
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1052 private boolean args(In in,List<ExpString> builder) throws ParseException { |
645 | 1053 parser.begin(); |
104
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1054 if( parser.match('(') ) { |
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1055 In inParens = in.parens(); |
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1056 Spaces(inParens); |
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1057 ExpList(inParens,builder); // optional |
107
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1058 if( !parser.match(')') ) |
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1059 throw parser.exception("Expression or ')' expected"); |
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1060 Spaces(in); |
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1061 return parser.success(); |
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1062 } |
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1063 Expr exp = TableExpr(in); |
107
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1064 if( exp != null ) { |
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1065 builder.add(new ExpString(exp)); |
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1066 return parser.success(); |
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1067 } |
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1068 String s = StringLiteral(in); |
107
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1069 if( s != null ) { |
652
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1070 builder.add( new ExpString(new ConstExpr(s)) ); |
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1071 return parser.success(); |
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1072 } |
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1073 /* |
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1074 Expressions exps = TemplateExpressions(in); |
107
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1075 if( exps != null ) { |
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1076 builder.add(exps); |
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1077 return parser.success(); |
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1078 } |
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1079 */ |
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1080 return parser.failure(); |
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1081 } |
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1082 |
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1083 private Expressions ExpList(In in) throws ParseException { |
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1084 List<ExpString> builder = new ArrayList<ExpString>(); |
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1085 return ExpList(in,builder) ? ExpList.build(expList(builder)) : null; |
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1086 } |
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1087 |
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1088 private ExpString ExpStringList(In in) throws ParseException { |
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1089 List<ExpString> builder = new ArrayList<ExpString>(); |
654 | 1090 return ExpList(in,builder) ? expString(builder) : null; |
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1091 } |
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1092 |
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1093 private boolean ExpList(In in,List<ExpString> builder) throws ParseException { |
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1094 parser.begin(); |
654 | 1095 ExpString exp = TemplateExpressions(in); |
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1096 if( exp != null ) { |
654 | 1097 builder.add(exp); |
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1098 return parser.success(); |
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1099 } |
654 | 1100 exp = ExprZ(in); |
1101 if( exp==null ) | |
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1102 return parser.failure(); |
654 | 1103 builder.add(exp); |
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1104 while( parser.match(',') ) { |
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1105 Spaces(in); |
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1106 exp = TemplateExpressions(in); |
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1107 if( exp != null ) { |
654 | 1108 builder.add(exp); |
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1109 return parser.success(); |
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1110 } |
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1111 builder.add( RequiredExpr(in) ); |
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1112 } |
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1113 return parser.success(); |
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1114 } |
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1115 |
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1116 private Expr SubExpr(In in) throws ParseException { |
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1117 parser.begin(); |
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1118 if( !parser.match('[') || parser.test("[") || parser.test("=") ) |
104
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1119 return parser.failure(null); |
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1120 Spaces(In.NOTHING); |
650
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1121 Expr exp = expr(exp(RequiredExpr(In.NOTHING))); |
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1122 RequiredMatch(']'); |
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1123 Spaces(in); |
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1124 return parser.success(exp); |
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1125 } |
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1126 |
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1127 private Expr NameExpr(In in) throws ParseException { |
645 | 1128 parser.begin(); |
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1129 String name = Name(in); |
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1130 if( name==null ) |
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1131 return parser.failure(null); |
645 | 1132 return parser.success(new ConstExpr(name)); |
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1133 } |
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1134 |
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1135 private String RequiredName(In in) throws ParseException { |
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1136 parser.begin(); |
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1137 String name = Name(in); |
104
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1138 if( name==null ) |
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1139 throw parser.exception("Name expected"); |
104
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1140 return parser.success(name); |
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1141 } |
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1142 |
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1143 private String Name(In in) throws ParseException { |
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1144 int start = parser.begin(); |
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1145 if( !NameFirstChar() ) |
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1146 return parser.failure(null); |
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1147 while( NameChar() ); |
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1148 String match = parser.textFrom(start); |
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1149 if( keywords.contains(match) ) |
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1150 return parser.failure(null); |
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1151 Spaces(in); |
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1152 return parser.success(match); |
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1153 } |
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1154 |
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1155 private boolean NameChar() { |
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1156 return NameFirstChar() || Digit(); |
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1157 } |
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1158 |
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1159 private boolean NameFirstChar() { |
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1160 return parser.inCharRange('a', 'z') || parser.inCharRange('A', 'Z') || parser.match('_'); |
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1161 } |
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1162 |
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1163 private void RequiredMatch(char c) throws ParseException { |
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1164 if( !parser.match(c) ) |
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1165 throw parser.exception("'"+c+"' expected"); |
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1166 } |
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1167 |
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1168 private void RequiredMatch(String s) throws ParseException { |
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1169 if( !parser.match(s) ) |
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1170 throw parser.exception("'"+s+"' expected"); |
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1171 } |
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1172 |
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1173 private void RequiredKeyword(String keyword,In in) throws ParseException { |
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1174 if( !Keyword(keyword,in) ) |
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1175 throw parser.exception("'"+keyword+"' expected"); |
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1176 } |
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1177 |
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1178 private boolean Keyword(String keyword,In in) throws ParseException { |
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1179 parser.begin(); |
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1180 if( !parser.match(keyword) || NameChar() ) |
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1181 return parser.failure(); |
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1182 Spaces(in); |
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1183 return parser.success(); |
12
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1184 } |
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1185 |
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1186 private static final Set<String> keywords = new HashSet<String>(Arrays.asList( |
12
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1187 "and", |
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1188 "break", |
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1189 "do", |
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1190 "else", |
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1191 "elseif", |
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1192 "end", |
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1193 "false", |
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1194 "for", |
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1195 "function", |
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1196 "goto", |
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1197 "if", |
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1198 "in", |
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1199 "local", |
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1200 "nil", |
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1201 "not", |
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1202 "or", |
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1203 "repeat", |
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1204 "return", |
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1205 "then", |
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1206 "true", |
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1207 "until", |
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1208 "while" |
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1209 )); |
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1210 |
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1211 private Expr Literal(In in) throws ParseException { |
645 | 1212 parser.begin(); |
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1213 if( NilLiteral(in) ) |
645 | 1214 return parser.success(new ConstExpr(null)); |
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1215 Boolean b = BooleanLiteral(in); |
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1216 if( b != null ) |
645 | 1217 return parser.success(new ConstExpr(b)); |
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1218 Number n = NumberLiteral(in); |
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1219 if( n != null ) |
645 | 1220 return parser.success(new ConstExpr(n)); |
129
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1221 String s = StringLiteral(in); |
104
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1222 if( s != null ) |
645 | 1223 return parser.success(new ConstExpr(s)); |
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1224 return parser.failure(null); |
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1225 } |
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1226 |
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1227 private boolean NilLiteral(In in) throws ParseException { |
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1228 return Keyword("nil",in); |
65
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1229 } |
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1230 |
129
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1231 private Boolean BooleanLiteral(In in) throws ParseException { |
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1232 if( Keyword("true",in) ) |
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1233 return true; |
129
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1234 if( Keyword("false",in) ) |
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1235 return false; |
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1236 return null; |
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1237 } |
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1238 |
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1239 private Number NumberLiteral(In in) throws ParseException { |
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1240 parser.begin(); |
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1241 Number n; |
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1242 if( parser.matchIgnoreCase("0x") ) { |
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1243 n = HexNumber(); |
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1244 } else { |
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1245 n = DecNumber(); |
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1246 } |
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1247 if( n==null || NameChar() ) |
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1248 return parser.failure(null); |
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1249 Spaces(in); |
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1250 return parser.success(n); |
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1251 } |
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1252 |
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1253 private Number DecNumber() { |
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1254 int start = parser.begin(); |
535
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1255 boolean isInt = true; |
104
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1256 if( Int() ) { |
535
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1257 if( parser.match('.') ) { |
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1258 isInt = false; |
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1259 Int(); // optional |
535
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1260 } |
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1261 } else if( parser.match('.') && Int() ) { |
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1262 // ok |
535
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1263 isInt = false; |
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1264 } else |
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1265 return parser.failure(null); |
535
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1266 if( Exponent() ) // optional |
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1267 isInt = false; |
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1268 String s = parser.textFrom(start); |
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1269 if( isInt ) { |
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|
1270 try { |
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1271 return parser.success(Integer.valueOf(s)); |
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1272 } catch(NumberFormatException e) {} |
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parse numeric constants to ints or longs if possible
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1273 try { |
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1274 return parser.success(Long.valueOf(s)); |
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1275 } catch(NumberFormatException e) {} |
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1276 } |
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1277 return parser.success(Double.valueOf(s)); |
5
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1278 } |
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1279 |
104
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1280 private boolean Exponent() { |
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1281 parser.begin(); |
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1282 if( !parser.matchIgnoreCase("e") ) |
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1283 return parser.failure(); |
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1284 parser.anyOf("+-"); // optional |
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1285 if( !Int() ) |
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1286 return parser.failure(); |
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1287 return parser.success(); |
5
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1288 } |
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1289 |
104
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1290 private boolean Int() { |
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1291 if( !Digit() ) |
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1292 return false; |
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1293 while( Digit() ); |
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1294 return true; |
5
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1295 } |
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1296 |
104
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1297 private boolean Digit() { |
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1298 return parser.inCharRange('0', '9'); |
16
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1299 } |
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1300 |
104
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1301 private Number HexNumber() { |
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1302 int start = parser.begin(); |
535
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1303 long nLong = 0; |
104
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1304 double n; |
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1305 if( HexInt() ) { |
535
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1306 nLong = Long.parseLong(parser.textFrom(start),16); |
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1307 n = (double)nLong; |
104
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1308 if( parser.match('.') ) { |
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1309 start = parser.currentIndex(); |
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1310 if( HexInt() ) { |
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1311 String dec = parser.textFrom(start); |
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1312 n += (double)Long.parseLong(dec,16) / Math.pow(16,dec.length()); |
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1313 } |
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1314 } |
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1315 } else if( parser.match('.') && HexInt() ) { |
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1316 String dec = parser.textFrom(start+1); |
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1317 n = (double)Long.parseLong(dec,16) / Math.pow(16,dec.length()); |
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1318 } else { |
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1319 return parser.failure(null); |
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1320 } |
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1321 if( parser.matchIgnoreCase("p") ) { |
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1322 parser.anyOf("+-"); // optional |
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1323 start = parser.currentIndex(); |
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1324 if( !HexInt() ) |
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1325 return parser.failure(null); |
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1326 n *= Math.pow(2,(double)Long.parseLong(parser.textFrom(start))); |
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1327 } |
535
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1328 if( nLong == n ) { |
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1329 int nInt = (int)nLong; |
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1330 if( nInt == nLong ) |
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1331 return parser.success(Integer.valueOf(nInt)); |
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1332 return parser.success(Long.valueOf(nLong)); |
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1333 } |
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1334 return parser.success(Double.valueOf(n)); |
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1335 } |
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1336 |
104
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1337 private boolean HexInt() { |
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1338 if( !HexDigit() ) |
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1339 return false; |
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1340 while( HexDigit() ); |
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1341 return true; |
16
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1342 } |
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1343 |
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1344 |
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1345 private boolean HexDigit() { |
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1346 return Digit() || parser.anyOf("abcdefABCDEF"); |
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1347 } |
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1348 |
129
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1349 private String StringLiteral(In in) throws ParseException { |
104
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1350 String s; |
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1351 if( (s=QuotedString('"'))==null |
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1352 && (s=QuotedString('\''))==null |
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1353 && (s=LongString())==null |
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1354 ) |
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1355 return null; |
129
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1356 Spaces(in); |
104
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1357 return s; |
16
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1358 } |
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1359 |
104
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1360 private String LongString() throws ParseException { |
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1361 parser.begin(); |
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1362 if( !parser.match('[') ) |
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1363 return parser.failure(null); |
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1364 int start = parser.currentIndex(); |
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1365 while( parser.match('=') ); |
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1366 int nEquals = parser.currentIndex() - start; |
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1367 if( !parser.match('[') ) |
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1368 return parser.failure(null); |
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1369 EndOfLine(); |
104
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1370 start = parser.currentIndex(); |
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1371 while( !LongBracketsEnd(nEquals) ) { |
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1372 if( !parser.anyChar() ) |
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1373 throw parser.exception("Unclosed long string"); |
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1374 } |
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1375 String s = parser.text.substring( start, parser.currentIndex() - nEquals - 2 ); |
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1376 return parser.success(s); |
6
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1377 } |
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1378 |
104
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1379 private String QuotedString(char quote) throws ParseException { |
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1380 parser.begin(); |
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1381 if( !parser.match(quote) ) |
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1382 return parser.failure(null); |
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1383 StringBuilder buf = new StringBuilder(); |
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1384 while( !parser.match(quote) ) { |
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1385 Character c = EscSeq(); |
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1386 if( c != null ) { |
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1387 buf.append(c); |
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1388 } else { |
271
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1389 if( parser.test('\r') || parser.test('\n') || !parser.anyChar() ) |
104
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1390 throw parser.exception("Unclosed string"); |
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1391 buf.append(parser.lastChar()); |
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1392 } |
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1393 } |
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1394 return parser.success(buf.toString()); |
6
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1395 } |
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1396 |
104
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1397 private Character EscSeq() { |
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1398 parser.begin(); |
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1399 if( !parser.match('\\') ) |
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1400 return parser.failure(null); |
155
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1401 if( parser.match('a') ) return parser.success('\u0007'); |
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1402 if( parser.match('b') ) return parser.success('\b'); |
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1403 if( parser.match('f') ) return parser.success('\f'); |
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1404 if( parser.match('n') ) return parser.success('\n'); |
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1405 if( parser.match('r') ) return parser.success('\r'); |
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1406 if( parser.match('t') ) return parser.success('\t'); |
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1407 if( parser.match('v') ) return parser.success('\u000b'); |
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1408 if( parser.match('\\') ) return parser.success('\\'); |
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1409 if( parser.match('"') ) return parser.success('"'); |
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1410 if( parser.match('\'') ) return parser.success('\''); |
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1411 int start = parser.currentIndex(); |
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1412 if( parser.match('x') && HexDigit() && HexDigit() ) |
155
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1413 return parser.success((char)Integer.parseInt(parser.textFrom(start+1),16)); |
104
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1414 if( Digit() ) { |
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1415 if( Digit() ) Digit(); // optional |
155
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1416 return parser.success((char)Integer.parseInt(parser.textFrom(start))); |
104
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1417 } |
271
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1418 if( EndOfLine() ) |
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1419 return parser.success('\n'); |
104
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1420 return parser.failure(null); |
14
2ddf85634d20
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1421 } |
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1422 |
129
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1423 private void Spaces(In in) throws ParseException { |
247
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1424 while( parser.anyOf(" \t") || Comment() || ContinueOnNextLine() || in.parens && EndOfLine() ); |
14
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1425 } |
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1426 |
104
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1427 private boolean ContinueOnNextLine() { |
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1428 parser.begin(); |
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1429 return parser.match('\\') && EndOfLine() ? parser.success() : parser.failure(); |
7
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1430 } |
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1431 |
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1432 private boolean Comment() throws ParseException { |
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1433 if( LongComment() ) |
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1434 return true; |
104
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1435 if( parser.match("--") ) { |
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1436 while( parser.noneOf("\r\n") ); |
247
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1437 return true; |
104
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1438 } |
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1439 return false; |
18
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1440 } |
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1441 |
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1442 private boolean LongComment() throws ParseException { |
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1443 parser.begin(); |
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1444 if( !parser.match("--[") ) |
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1445 return parser.failure(); |
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1446 int start = parser.currentIndex(); |
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1447 while( parser.match('=') ); |
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1448 int nEquals = parser.currentIndex() - start; |
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1449 if( !parser.match('[') ) |
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|
1450 return parser.failure(); |
754e6030c029
remove parboiled and rewrite parser;
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parents:
99
diff
changeset
|
1451 while( !LongBracketsEnd(nEquals) ) { |
754e6030c029
remove parboiled and rewrite parser;
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parents:
99
diff
changeset
|
1452 if( !parser.anyChar() ) |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1453 throw parser.exception("Unclosed comment"); |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1454 } |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1455 return parser.success(); |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
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|
1456 } |
754e6030c029
remove parboiled and rewrite parser;
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parents:
99
diff
changeset
|
1457 |
754e6030c029
remove parboiled and rewrite parser;
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parents:
99
diff
changeset
|
1458 private boolean LongBracketsEnd(int nEquals) { |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1459 parser.begin(); |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1460 if( !parser.match(']') ) |
754e6030c029
remove parboiled and rewrite parser;
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parents:
99
diff
changeset
|
1461 return parser.failure(); |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1462 while( nEquals-- > 0 ) { |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
99
diff
changeset
|
1463 if( !parser.match('=') ) |
754e6030c029
remove parboiled and rewrite parser;
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parents:
99
diff
changeset
|
1464 return parser.failure(); |
754e6030c029
remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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|
1465 } |
754e6030c029
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parents:
99
diff
changeset
|
1466 if( !parser.match(']') ) |
754e6030c029
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parents:
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diff
changeset
|
1467 return parser.failure(); |
754e6030c029
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parents:
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diff
changeset
|
1468 return parser.success(); |
12
9cea1aea5eef
CmdLine can run files
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
11
diff
changeset
|
1469 } |
9cea1aea5eef
CmdLine can run files
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parents:
11
diff
changeset
|
1470 |
648
e387e4021afe
start compiler with len operator
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diff
changeset
|
1471 |
e387e4021afe
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changeset
|
1472 |
e387e4021afe
start compiler with len operator
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645
diff
changeset
|
1473 |
e387e4021afe
start compiler with len operator
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diff
changeset
|
1474 private static int classCounter = 0; |
e387e4021afe
start compiler with len operator
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645
diff
changeset
|
1475 |
649
37f0cf43f191
UnaryExpr now compiled
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648
diff
changeset
|
1476 private class ExpString { |
37f0cf43f191
UnaryExpr now compiled
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648
diff
changeset
|
1477 final String code; |
37f0cf43f191
UnaryExpr now compiled
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648
diff
changeset
|
1478 final boolean isExpr; |
37f0cf43f191
UnaryExpr now compiled
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parents:
648
diff
changeset
|
1479 final boolean isStmt; |
37f0cf43f191
UnaryExpr now compiled
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648
diff
changeset
|
1480 |
37f0cf43f191
UnaryExpr now compiled
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648
diff
changeset
|
1481 ExpString(Expressions exp) { |
37f0cf43f191
UnaryExpr now compiled
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parents:
648
diff
changeset
|
1482 if( exp==null ) throw new NullPointerException(); |
654 | 1483 int i = LuanImpl.addExpressions(exp); |
1484 code = "LuanImpl.getExpressions(" + i + ").eval(luan)"; | |
649
37f0cf43f191
UnaryExpr now compiled
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parents:
648
diff
changeset
|
1485 isExpr = exp instanceof Expr; |
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1486 isStmt = exp instanceof StmtExp; |
37f0cf43f191
UnaryExpr now compiled
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parents:
648
diff
changeset
|
1487 } |
37f0cf43f191
UnaryExpr now compiled
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parents:
648
diff
changeset
|
1488 |
37f0cf43f191
UnaryExpr now compiled
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parents:
648
diff
changeset
|
1489 ExpString(String code,boolean isExpr,boolean isStmt) { |
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1490 this.code = code; |
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1491 this.isExpr = isExpr; |
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1492 this.isStmt = isStmt; |
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1493 } |
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1494 |
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1495 ExpString expr() { |
654 | 1496 return isExpr ? this : new ExpString( "Luan.first(" + code + ")", true, isStmt ); |
649
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1497 } |
37f0cf43f191
UnaryExpr now compiled
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parents:
648
diff
changeset
|
1498 |
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1499 Expressions toExpressions() { |
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1500 String superClass = isStmt ? "StmtExp" : "Expressions"; |
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1501 String className = "EXP" + ++classCounter; |
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1502 String classCode = "" |
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1503 +"package luan.impl;\n" |
654 | 1504 +"import luan.Luan;\n" |
649
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1505 +"import luan.LuanException;\n" |
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1506 +"\n" |
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1507 +"public class " + className +" implements " + superClass + " {\n" |
654 | 1508 +" @Override public Object eval(LuanStateImpl luan) throws LuanException {\n" |
1509 +" Object cnd;\n" | |
649
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1510 +" return " + code + ";\n" |
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1511 +" }\n" |
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1512 +"}\n" |
37f0cf43f191
UnaryExpr now compiled
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parents:
648
diff
changeset
|
1513 ; |
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1514 //System.out.println(code); |
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1515 try { |
37f0cf43f191
UnaryExpr now compiled
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parents:
648
diff
changeset
|
1516 Class cls = LuanJavaCompiler.compile("luan.impl."+className,code,classCode); |
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1517 return (Expressions)cls.newInstance(); |
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1518 } catch(ClassNotFoundException e) { |
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1519 throw new RuntimeException(e); |
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1520 } catch(InstantiationException e) { |
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1521 throw new RuntimeException(e); |
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1522 } catch(IllegalAccessException e) { |
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1523 throw new RuntimeException(e); |
37f0cf43f191
UnaryExpr now compiled
Franklin Schmidt <fschmidt@gmail.com>
parents:
648
diff
changeset
|
1524 } |
648
e387e4021afe
start compiler with len operator
Franklin Schmidt <fschmidt@gmail.com>
parents:
645
diff
changeset
|
1525 } |
e387e4021afe
start compiler with len operator
Franklin Schmidt <fschmidt@gmail.com>
parents:
645
diff
changeset
|
1526 } |
e387e4021afe
start compiler with len operator
Franklin Schmidt <fschmidt@gmail.com>
parents:
645
diff
changeset
|
1527 |
650
d658eab7bf4c
finish compiling operators
Franklin Schmidt <fschmidt@gmail.com>
parents:
649
diff
changeset
|
1528 private static Expressions exp(ExpString expStr) { |
d658eab7bf4c
finish compiling operators
Franklin Schmidt <fschmidt@gmail.com>
parents:
649
diff
changeset
|
1529 return expStr==null ? null : expStr.toExpressions(); |
d658eab7bf4c
finish compiling operators
Franklin Schmidt <fschmidt@gmail.com>
parents:
649
diff
changeset
|
1530 } |
d658eab7bf4c
finish compiling operators
Franklin Schmidt <fschmidt@gmail.com>
parents:
649
diff
changeset
|
1531 |
654 | 1532 private ExpString expString(List<ExpString> list) { |
652
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1533 switch(list.size()) { |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1534 case 0: |
653
538b0ae08faa
compile IfStmt and BreakStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
652
diff
changeset
|
1535 return new ExpString("LuanFunction.NOTHING",false,false); |
652
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1536 case 1: |
653
538b0ae08faa
compile IfStmt and BreakStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
652
diff
changeset
|
1537 return list.get(0); |
652
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1538 default: |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1539 int lastI = list.size() - 1; |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1540 StringBuilder sb = new StringBuilder(); |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1541 sb.append( "new Object[]{" ); |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1542 for( int i=0; i<lastI; i++ ) { |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1543 sb.append( list.get(i).expr().code ).append( ',' ); |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1544 } |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1545 ExpString last = list.get(lastI); |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1546 if( last.isExpr ) { |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1547 sb.append( last.code ).append( '}' ); |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1548 return new ExpString(sb.toString(),false,false); |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1549 } else { |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1550 sb.append( '}' ); |
654 | 1551 String s = "LuanImpl.concatArgs(" + sb + "," + last.code + ")"; |
652
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1552 return new ExpString(s,false,false); |
067d9470184d
compile SetStmt and ForStmt
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parents:
651
diff
changeset
|
1553 } |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1554 } |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1555 } |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1556 |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1557 private static List<Expressions> expList(List<ExpString> esList) { |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1558 List<Expressions> list = new ArrayList<Expressions>(); |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1559 for( ExpString es : esList ) { |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1560 list.add(exp(es)); |
067d9470184d
compile SetStmt and ForStmt
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parents:
651
diff
changeset
|
1561 } |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1562 return list; |
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1563 } |
651
140cc5191b7a
start compiling statements
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parents:
650
diff
changeset
|
1564 |
140cc5191b7a
start compiling statements
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parents:
650
diff
changeset
|
1565 private static class StmtString { |
140cc5191b7a
start compiling statements
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parents:
650
diff
changeset
|
1566 final String code; |
140cc5191b7a
start compiling statements
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parents:
650
diff
changeset
|
1567 |
140cc5191b7a
start compiling statements
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parents:
650
diff
changeset
|
1568 StmtString(Stmt stmt) { |
140cc5191b7a
start compiling statements
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parents:
650
diff
changeset
|
1569 if( stmt==null ) throw new NullPointerException(); |
654 | 1570 int i = LuanImpl.addStmt(stmt); |
1571 code = "LuanImpl.getStmt(" + i + ").eval(luan);\n"; | |
651
140cc5191b7a
start compiling statements
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parents:
650
diff
changeset
|
1572 } |
140cc5191b7a
start compiling statements
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parents:
650
diff
changeset
|
1573 |
140cc5191b7a
start compiling statements
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parents:
650
diff
changeset
|
1574 StmtString(String code) { |
140cc5191b7a
start compiling statements
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parents:
650
diff
changeset
|
1575 this.code = code; |
652
067d9470184d
compile SetStmt and ForStmt
Franklin Schmidt <fschmidt@gmail.com>
parents:
651
diff
changeset
|
1576 if( code.contains("LuanParser") ) throw new RuntimeException("\n"+code); |
651
140cc5191b7a
start compiling statements
Franklin Schmidt <fschmidt@gmail.com>
parents:
650
diff
changeset
|
1577 } |
140cc5191b7a
start compiling statements
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parents:
650
diff
changeset
|
1578 |
140cc5191b7a
start compiling statements
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parents:
650
diff
changeset
|
1579 Stmt toStmt() { |
140cc5191b7a
start compiling statements
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parents:
650
diff
changeset
|
1580 String className = "EXP" + ++classCounter; |
140cc5191b7a
start compiling statements
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parents:
650
diff
changeset
|
1581 String classCode = "" |
140cc5191b7a
start compiling statements
Franklin Schmidt <fschmidt@gmail.com>
parents:
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diff
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1582 +"package luan.impl;\n" |
654 | 1583 +"import luan.Luan;\n" |
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1584 +"import luan.LuanFunction;\n" |
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1585 +"import luan.LuanException;\n" |
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1586 +"\n" |
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1587 +"public class " + className +" implements Stmt {\n" |
654 | 1588 +" @Override public void eval(LuanStateImpl luan) throws LuanException {\n" |
1589 +" Object cnd;\n" | |
651
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1590 +" " + code |
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1591 +" }\n" |
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1592 +"}\n" |
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1593 ; |
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1594 //System.out.println(code); |
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1595 try { |
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1596 Class cls = LuanJavaCompiler.compile("luan.impl."+className,"code",classCode); |
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1597 return (Stmt)cls.newInstance(); |
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1598 } catch(ClassNotFoundException e) { |
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1599 throw new RuntimeException(e); |
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1600 } catch(InstantiationException e) { |
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1601 throw new RuntimeException(e); |
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1602 } catch(IllegalAccessException e) { |
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1603 throw new RuntimeException(e); |
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1604 } |
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1605 } |
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1606 } |
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1607 |
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1608 private static StmtString EMPTY_STMT = new StmtString(""); |
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1609 |
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1610 private static Stmt stmt(StmtString stmtStr) { |
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1611 return stmtStr==null ? null : stmtStr.toStmt(); |
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1612 } |
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1613 |
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1614 private static StmtString stmtStr(Stmt stmt) { |
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1615 return stmt==null ? null : new StmtString(stmt); |
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1616 } |
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1617 |
652
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1618 |
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1619 private static class SettableString { |
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1620 final String code; |
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1621 |
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1622 SettableString(Settable settable) { |
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1623 if( settable==null ) throw new NullPointerException(); |
654 | 1624 int i = LuanImpl.addSettable(settable); |
1625 code = "LuanImpl.getSettable(" + i + ")"; | |
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1626 } |
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1627 |
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1628 SettableString(String code) { |
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1629 this.code = code; |
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1630 } |
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1631 |
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1632 } |
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1633 |
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1634 } |