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annotate core/src/luan/impl/LuanParser.java @ 190:04b86428dc50

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minor git-svn-id: https://luan-java.googlecode.com/svn/trunk@191 21e917c8-12df-6dd8-5cb6-c86387c605b9
author fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
date Thu, 26 Jun 2014 18:20:54 +0000
parents cf939124461a
children 2456ef7ada02
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rev   line source
166
4eaee12f6c65 move luan/interp to impl
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diff changeset
1 package luan.impl;
5
9ef0fd711101 start LuaParser
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2
12
9cea1aea5eef CmdLine can run files
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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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9ef0fd711101 start LuaParser
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8 import java.util.Scanner;
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64ecb7a3aad7 rename Lua to Luan
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9 import luan.Luan;
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10 import luan.LuanState;
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11 import luan.LuanSource;
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12 import luan.modules.PackageLuan;
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9ef0fd711101 start LuaParser
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13
9ef0fd711101 start LuaParser
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14
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15 final class LuanParser {
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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;
32
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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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6db8f286fa6c _ENV is per module, not global
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26 Frame(UpValue.Getter envGetter) {
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0cdc1da466ee implement _G and _ENV
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27 this.parent = null;
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28 upValueSymbols.add(_ENV);
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29 upValueGetters.add(envGetter);
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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;
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34 if( upValueIndex(_ENV) != 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,template);
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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(parens,true);
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91 }
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92 }
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93
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94 private static final String _ENV = "_ENV";
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95 private static final UpValue.Getter[] NO_UP_VALUE_GETTERS = new UpValue.Getter[0];
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96
128
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97 final LuanSource source;
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98 private Frame frame;
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99 private final Parser parser;
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100 private final boolean interactive;
86
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101
108
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102 LuanParser(LuanSource source,UpValue.Getter envGetter) {
86
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103 this.source = source;
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104 this.frame = new Frame(envGetter);
118
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105 this.parser = new Parser(source);
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106 this.interactive = envGetter instanceof UpValue.ValueGetter;
108
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107 }
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108
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109 void addVar(String name,Object value) {
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110 frame.addUpValueGetter(name,new UpValue.ValueGetter(value));
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111 }
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112
104
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113 private LuanSource.Element se(int start) {
190
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114 return se(start,null);
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115 }
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116
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117 private LuanSource.Element se(int start,String text) {
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118 return new LuanSource.Element(source,start,parser.currentIndex(),text);
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119 }
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120
104
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121 private List<String> symbols() {
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122 return frame.symbols;
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123 }
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124
104
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125 private int symbolsSize() {
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126 return frame.symbols.size();
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127 }
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128
104
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129 private void addSymbol(String name) {
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130 frame.symbols.add(name);
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131 if( frame.stackSize < symbolsSize() )
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132 frame.stackSize = symbolsSize();
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133 }
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134
104
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135 private void addSymbols(List<String> names) {
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136 frame.symbols.addAll(names);
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137 if( frame.stackSize < symbolsSize() )
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138 frame.stackSize = symbolsSize();
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139 }
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140
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141 private int stackIndex(String name) {
32
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142 return frame.stackIndex(name);
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143 }
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144
104
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145 private void popSymbols(int n) {
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146 List<String> symbols = frame.symbols;
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147 while( n-- > 0 ) {
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148 symbols.remove(symbols.size()-1);
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149 }
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150 }
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151
104
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152 private int upValueIndex(String name) {
32
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153 return frame.upValueIndex(name);
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154 }
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155
104
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156 private void incLoops() {
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157 frame.loops++;
104
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158 }
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159
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160 private void decLoops() {
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161 frame.loops--;
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162 }
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163
104
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164 private <T> T required(T t) throws ParseException {
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165 if( t==null )
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166 throw parser.exception();
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167 return t;
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168 }
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169
104
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170 private <T> T required(T t,String msg) throws ParseException {
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171 if( t==null )
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172 throw parser.exception(msg);
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173 return t;
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174 }
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175
154
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176 private static Expr expr(Expressions exprs) {
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177 if( exprs instanceof Expr )
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178 return (Expr)exprs;
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179 return new ExpressionsExpr(exprs);
107
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180 }
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181
104
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182 private FnDef newFnDef(int start,Stmt stmt) {
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183 return new FnDef( se(start), stmt, frame.stackSize, symbolsSize(), frame.isVarArg, frame.upValueGetters.toArray(NO_UP_VALUE_GETTERS) );
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184 }
20
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185
158
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186 FnDef Expression() throws ParseException {
129
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187 Spaces(In.NOTHING);
104
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188 int start = parser.begin();
158
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189 Expressions expr = Expr(In.NOTHING);
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190 if( expr != null && parser.endOfInput() ) {
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191 Stmt stmt = new ReturnStmt( se(start), expr );
104
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192 return parser.success(newFnDef(start,stmt));
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193 }
108
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194 return parser.failure(null);
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195 }
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196
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197 FnDef RequiredModule() throws ParseException {
129
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198 Spaces(In.NOTHING);
108
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199 int start = parser.begin();
104
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200 frame.isVarArg = true;
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201 Stmt stmt = RequiredBlock();
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202 if( parser.endOfInput() )
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203 return parser.success(newFnDef(start,stmt));
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204 throw parser.exception();
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205 }
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206
104
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207 private Stmt RequiredBlock() throws ParseException {
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208 List<Stmt> stmts = new ArrayList<Stmt>();
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209 int stackStart = symbolsSize();
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210 Stmt(stmts);
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211 while( StmtSep(stmts) ) {
129
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212 Spaces(In.NOTHING);
104
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213 Stmt(stmts);
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214 }
21
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215 int stackEnd = symbolsSize();
19
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216 popSymbols( stackEnd - stackStart );
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217 if( stmts.isEmpty() )
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218 return Stmt.EMPTY;
19
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219 if( stmts.size()==1 && stackStart==stackEnd )
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220 return stmts.get(0);
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221 return new Block( stmts.toArray(new Stmt[0]), stackStart, stackEnd );
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222 }
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223
104
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224 private boolean StmtSep(List<Stmt> stmts) throws ParseException {
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225 parser.begin();
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226 if( parser.match( ';' ) )
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227 return parser.success();
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228 if( parser.match( "--" ) ) {
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229 while( parser.noneOf("\r\n") );
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230 }
157
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231 if( EndOfLine() )
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232 return parser.success();
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233 parser.rollback();
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234 Stmt stmt = TemplateStmt();
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235 if( stmt != null ) {
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236 stmts.add(stmt);
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237 return parser.success();
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238 }
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239 return parser.failure();
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240 }
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241
104
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242 private boolean EndOfLine() {
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243 return parser.match( "\r\n" ) || parser.match( '\r' ) || parser.match( '\n' );
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244 }
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245
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246 private void Stmt(List<Stmt> stmts) throws ParseException {
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247 if( LocalStmt(stmts) )
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248 return;
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249 Stmt stmt;
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250 if( (stmt=ReturnStmt()) != null
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251 || (stmt=FunctionStmt()) != null
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252 || (stmt=LocalFunctionStmt()) != null
108
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253 || (stmt=ImportStmt()) != null
104
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254 || (stmt=BreakStmt()) != null
127
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255 || (stmt=ForStmt()) != null
104
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256 || (stmt=TryStmt()) != null
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257 || (stmt=DoStmt()) != null
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258 || (stmt=WhileStmt()) != null
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259 || (stmt=FunctionStmt()) != null
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260 || (stmt=RepeatStmt()) != null
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261 || (stmt=IfStmt()) != null
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262 || (stmt=SetStmt()) != null
159
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263 || (stmt=ExpressionsStmt()) != null
104
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264 ) {
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265 stmts.add(stmt);
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266 }
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267 }
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268
157
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269 private Stmt TemplateStmt() throws ParseException {
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270 int start = parser.currentIndex();
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271 Expressions exp = TemplateExpressions(In.NOTHING);
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272 if( exp == null )
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273 return null;
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274 Expr fnExp = (Expr)nameVar(start,"Io").expr();
190
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275 fnExp = new IndexExpr( se(start,"stdout"), fnExp, new ConstExpr("stdout") );
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276 fnExp = new IndexExpr( se(start,"write"), fnExp, new ConstExpr("write") );
157
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277 FnCall fnCall = new FnCall( se(start), fnExp, exp );
159
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278 return new ExpressionsStmt(fnCall);
157
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279 }
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280
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281 private Expressions TemplateExpressions(In in) throws ParseException {
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diff changeset
282 if( in.template )
129
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283 return null;
104
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284 int start = parser.begin();
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285 if( !parser.match( "%>" ) )
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286 return parser.failure(null);
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287 EndOfLine();
157
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288 In inTemplate = in.template();
154
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289 List<Expressions> builder = new ArrayList<Expressions>();
104
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diff changeset
290 while(true) {
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291 if( parser.match( "<%=" ) ) {
157
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diff changeset
292 Spaces(inTemplate);
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293 builder.add( RequiredExpr(inTemplate) );
104
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294 RequiredMatch( "%>" );
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295 } else if( parser.match( "<%" ) ) {
157
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296 Spaces(inTemplate);
154
c2e5101682ae Expr extends Expressions
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297 return parser.success(ExpList.build(builder));
104
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298 } else {
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299 int i = parser.currentIndex();
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300 do {
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301 if( parser.match( "%>" ) )
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302 throw parser.exception("'%>' unexpected");
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303 if( !parser.anyChar() )
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304 throw parser.exception("Unclosed template expression");
104
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305 } while( !parser.test( "<%" ) );
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306 String match = parser.textFrom(i);
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307 builder.add( new ConstExpr(match) );
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308 }
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309 }
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310 }
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311
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312 private Stmt ReturnStmt() throws ParseException {
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313 int start = parser.begin();
129
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314 if( !Keyword("return",In.NOTHING) )
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315 return parser.failure(null);
129
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316 Expressions exprs = ExpList(In.NOTHING);
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317 if( exprs==null )
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318 exprs = ExpList.emptyExpList;
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319 return parser.success( new ReturnStmt(se(start),exprs) );
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320 }
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321
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322 private Stmt FunctionStmt() throws ParseException {
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323 parser.begin();
129
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324 if( !Keyword("function",In.NOTHING) )
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325 return parser.failure(null);
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326
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327 int start = parser.currentIndex();
129
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328 Var var = nameVar(start,RequiredName(In.NOTHING));
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329 while( parser.match( '.' ) ) {
129
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330 Spaces(In.NOTHING);
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331 var = indexVar( start, expr(var.expr()), NameExpr(In.NOTHING) );
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332 }
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333 Settable fnName = var.settable();
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334
129
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335 FnDef fnDef = RequiredFunction(In.NOTHING);
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336 return parser.success( new SetStmt(fnName,fnDef) );
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337 }
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338
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339 private Stmt LocalFunctionStmt() throws ParseException {
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340 parser.begin();
129
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341 if( !(Keyword("local",In.NOTHING) && Keyword("function",In.NOTHING)) )
104
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342 return parser.failure(null);
129
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343 String name = RequiredName(In.NOTHING);
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344 addSymbol( name );
129
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345 FnDef fnDef = RequiredFunction(In.NOTHING);
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346 return parser.success( new SetStmt( new SetLocalVar(symbolsSize()-1), fnDef ) );
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347 }
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348
108
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349 private Stmt ImportStmt() throws ParseException {
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350 int start = parser.begin();
129
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351 if( !Keyword("import",In.NOTHING) )
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352 return parser.failure(null);
129
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353 String modName = StringLiteral(In.NOTHING);
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354 if( modName==null )
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355 return parser.failure(null);
175
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356 int i = modName.lastIndexOf('/');
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357 if( i == -1 )
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358 i = modName.lastIndexOf('.');
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359 String varName = modName.substring(i+1);
180
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360 if( !isValidName(varName) )
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361 throw parser.exception("invalid variable name '"+varName+"' in import");
108
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362 LuanSource.Element se = se(start);
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363 FnCall require = new FnCall( se, new ConstExpr(se,PackageLuan.requireFn), new ConstExpr(modName) );
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364 Settable settable;
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365 if( interactive ) {
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366 settable = nameVar(se,varName).settable();
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367 } else {
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368 addSymbol( varName );
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369 settable = new SetLocalVar(symbolsSize()-1);
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370 }
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371 return parser.success( new SetStmt( settable, expr(require) ) );
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372 }
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373
180
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374 private boolean isValidName(String s) {
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375 if( s.length() == 0 )
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376 return false;
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377 char c = s.charAt(0);
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378 if( !('a'<=c && c<='z' || 'A'<=c && c<='Z' || c=='_') )
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379 return false;
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380 for( int i=1; i<s.length() ; i++ ) {
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381 if( !('a'<=c && c<='z' || 'A'<=c && c<='Z' || c=='_' || '0'<=c && c<='9') )
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382 return false;
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383 }
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384 return true;
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385 }
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386
104
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387 private Stmt BreakStmt() throws ParseException {
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388 parser.begin();
129
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389 if( !Keyword("break",In.NOTHING) )
104
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390 return parser.failure(null);
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391 if( frame.loops <= 0 )
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392 throw parser.exception("'break' outside of loop");
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393 return parser.success( new BreakStmt() );
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394 }
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395
127
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396 private Stmt ForStmt() throws ParseException {
104
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diff changeset
397 int start = parser.begin();
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398 int stackStart = symbolsSize();
129
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399 if( !Keyword("for",In.NOTHING) )
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400 return parser.failure(null);
129
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401 List<String> names = RequiredNameList(In.NOTHING);
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402 if( !Keyword("in",In.NOTHING) )
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403 return parser.failure(null);
129
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404 Expr expr = expr(RequiredExpr(In.NOTHING));
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405 RequiredKeyword("do",In.NOTHING);
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diff changeset
406 addSymbols(names);
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407 Stmt loop = RequiredLoopBlock();
129
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408 RequiredKeyword("end",In.NOTHING);
127
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409 Stmt stmt = new ForStmt( se(start), stackStart, symbolsSize() - stackStart, expr, loop );
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diff changeset
410 popSymbols( symbolsSize() - stackStart );
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diff changeset
411 return parser.success(stmt);
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412 }
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diff changeset
413
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diff changeset
414 private Stmt TryStmt() throws ParseException {
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415 parser.begin();
129
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416 if( !Keyword("try",In.NOTHING) )
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417 return parser.failure(null);
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418 Stmt tryBlock = RequiredBlock();
129
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419 RequiredKeyword("catch",In.NOTHING);
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420 String name = RequiredName(In.NOTHING);
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421 addSymbol(name);
129
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diff changeset
422 RequiredKeyword("do",In.NOTHING);
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423 Stmt catchBlock = RequiredBlock();
129
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diff changeset
424 RequiredKeyword("end",In.NOTHING);
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diff changeset
425 Stmt stmt = new TryStmt( tryBlock, symbolsSize()-1, catchBlock );
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diff changeset
426 popSymbols(1);
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parents: 99
diff changeset
427 return parser.success(stmt);
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428 }
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diff changeset
429
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diff changeset
430 private Stmt DoStmt() throws ParseException {
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diff changeset
431 parser.begin();
129
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432 if( !Keyword("do",In.NOTHING) )
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diff changeset
433 return parser.failure(null);
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diff changeset
434 Stmt stmt = RequiredBlock();
129
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diff changeset
435 RequiredKeyword("end",In.NOTHING);
104
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diff changeset
436 return parser.success(stmt);
21
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diff changeset
437 }
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diff changeset
438
104
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diff changeset
439 private boolean LocalStmt(List<Stmt> stmts) throws ParseException {
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diff changeset
440 parser.begin();
129
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441 if( !Keyword("local",In.NOTHING) )
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442 return parser.failure();
129
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443 List<String> names = NameList(In.NOTHING);
104
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diff changeset
444 if( names==null )
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diff changeset
445 return parser.failure();
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446 if( parser.match( '=' ) ) {
129
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447 Spaces(In.NOTHING);
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448 Expressions values = ExpList(In.NOTHING);
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diff changeset
449 if( values==null )
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450 throw parser.exception("Expressions expected");
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diff changeset
451 SetLocalVar[] vars = new SetLocalVar[names.size()];
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diff changeset
452 int stackStart = symbolsSize();
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diff changeset
453 for( int i=0; i<vars.length; i++ ) {
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diff changeset
454 vars[i] = new SetLocalVar(stackStart+i);
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diff changeset
455 }
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diff changeset
456 stmts.add( new SetStmt( vars, values ) );
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diff changeset
457 }
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diff changeset
458 addSymbols(names);
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diff changeset
459 return parser.success();
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diff changeset
460 }
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diff changeset
461
129
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diff changeset
462 private List<String> RequiredNameList(In in) throws ParseException {
104
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diff changeset
463 parser.begin();
129
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diff changeset
464 List<String> names = NameList(in);
104
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diff changeset
465 if( names==null )
139
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diff changeset
466 throw parser.exception("Name expected");
104
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diff changeset
467 return parser.success(names);
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parents: 99
diff changeset
468 }
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parents: 99
diff changeset
469
129
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diff changeset
470 private List<String> NameList(In in) throws ParseException {
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diff changeset
471 String name = Name(in);
104
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diff changeset
472 if( name==null )
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diff changeset
473 return null;
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parents: 99
diff changeset
474 List<String> names = new ArrayList<String>();
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diff changeset
475 names.add(name);
139
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diff changeset
476 while( (name=anotherName(in)) != null ) {
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diff changeset
477 names.add(name);
104
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diff changeset
478 }
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diff changeset
479 return names;
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diff changeset
480 }
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diff changeset
481
139
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parents: 137
diff changeset
482 private String anotherName(In in) throws ParseException {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 137
diff changeset
483 parser.begin();
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 137
diff changeset
484 if( !parser.match( ',' ) )
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 137
diff changeset
485 return parser.failure(null);
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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diff changeset
486 Spaces(in);
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parents: 137
diff changeset
487 String name = Name(in);
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 137
diff changeset
488 if( name==null )
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parents: 137
diff changeset
489 return parser.failure(null);
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 137
diff changeset
490 return parser.success(name);
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parents: 137
diff changeset
491 }
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parents: 137
diff changeset
492
104
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diff changeset
493 private Stmt WhileStmt() throws ParseException {
151
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diff changeset
494 int start = parser.begin();
129
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diff changeset
495 if( !Keyword("while",In.NOTHING) )
104
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diff changeset
496 return parser.failure(null);
129
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497 Expr cnd = expr(RequiredExpr(In.NOTHING));
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498 RequiredKeyword("do",In.NOTHING);
104
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499 Stmt loop = RequiredLoopBlock();
129
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500 RequiredKeyword("end",In.NOTHING);
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501 return parser.success( new WhileStmt(se(start),cnd,loop) );
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502 }
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diff changeset
503
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504 private Stmt RepeatStmt() throws ParseException {
151
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505 int start = parser.begin();
129
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506 if( !Keyword("repeat",In.NOTHING) )
104
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507 return parser.failure(null);
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508 Stmt loop = RequiredLoopBlock();
129
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509 RequiredKeyword("until",In.NOTHING);
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510 Expr cnd = expr(RequiredExpr(In.NOTHING));
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511 return parser.success( new RepeatStmt(se(start),loop,cnd) );
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512 }
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diff changeset
513
104
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diff changeset
514 private Stmt RequiredLoopBlock() throws ParseException {
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diff changeset
515 incLoops();
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diff changeset
516 Stmt stmt = RequiredBlock();
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diff changeset
517 decLoops();
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518 return stmt;
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diff changeset
519 }
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diff changeset
520
104
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diff changeset
521 private Stmt IfStmt() throws ParseException {
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diff changeset
522 parser.begin();
129
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diff changeset
523 if( !Keyword("if",In.NOTHING) )
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diff changeset
524 return parser.failure(null);
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525 return parser.success( IfStmt2() );
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diff changeset
526 }
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diff changeset
527
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diff changeset
528 private Stmt IfStmt2() throws ParseException {
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diff changeset
529 int start = parser.currentIndex();
129
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530 Expr cnd = expr(RequiredExpr(In.NOTHING));
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diff changeset
531 RequiredKeyword("then",In.NOTHING);
104
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diff changeset
532 Stmt thenBlock = RequiredBlock();
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533 Stmt elseBlock;
129
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534 if( Keyword("elseif",In.NOTHING) ) {
104
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diff changeset
535 elseBlock = IfStmt2();
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536 } else {
129
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diff changeset
537 elseBlock = Keyword("else",In.NOTHING) ? RequiredBlock() : Stmt.EMPTY;
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diff changeset
538 RequiredKeyword("end",In.NOTHING);
104
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diff changeset
539 }
151
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diff changeset
540 return new IfStmt(se(start),cnd,thenBlock,elseBlock);
20
d85510d92eee add BreakStmt
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diff changeset
541 }
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diff changeset
542
104
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diff changeset
543 private Stmt SetStmt() throws ParseException {
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diff changeset
544 parser.begin();
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diff changeset
545 List<Settable> vars = new ArrayList<Settable>();
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diff changeset
546 Settable s = SettableVar();
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diff changeset
547 if( s == null )
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diff changeset
548 return parser.failure(null);
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diff changeset
549 vars.add(s);
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diff changeset
550 while( parser.match( ',' ) ) {
129
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diff changeset
551 Spaces(In.NOTHING);
104
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diff changeset
552 s = SettableVar();
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diff changeset
553 if( s == null )
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diff changeset
554 return parser.failure(null);
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diff changeset
555 vars.add(s);
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diff changeset
556 }
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diff changeset
557 if( !parser.match( '=' ) )
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diff changeset
558 return parser.failure(null);
129
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diff changeset
559 Spaces(In.NOTHING);
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diff changeset
560 Expressions values = ExpList(In.NOTHING);
104
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diff changeset
561 if( values==null )
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diff changeset
562 throw parser.exception("Expressions expected");
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diff changeset
563 return parser.success( new SetStmt( vars.toArray(new Settable[0]), values ) );
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diff changeset
564 }
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diff changeset
565
159
0abc9181061a revert rev 154 but only allow FnCall, AndExpr, or OrExpr in ExpressionsStmt
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diff changeset
566 private Stmt ExpressionsStmt() throws ParseException {
104
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diff changeset
567 parser.begin();
159
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parents: 158
diff changeset
568 Expressions exp = Expr(In.NOTHING);
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parents: 158
diff changeset
569 if( exp instanceof FnCall || exp instanceof AndExpr || exp instanceof OrExpr )
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diff changeset
570 return parser.success( new ExpressionsStmt(exp) );
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diff changeset
571 return parser.failure(null);
104
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diff changeset
572 }
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diff changeset
573
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diff changeset
574 private Settable SettableVar() throws ParseException {
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diff changeset
575 int start = parser.begin();
129
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diff changeset
576 Var var = VarZ(In.NOTHING);
104
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diff changeset
577 if( var==null )
155
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parents: 154
diff changeset
578 return parser.failure(null);
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parents: 154
diff changeset
579 return parser.success( var.settable() );
104
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diff changeset
580 }
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parents: 99
diff changeset
581
154
c2e5101682ae Expr extends Expressions
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parents: 153
diff changeset
582 private Expressions RequiredExpr(In in) throws ParseException {
129
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diff changeset
583 parser.begin();
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diff changeset
584 return parser.success(required(Expr(in),"Bad expression"));
104
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diff changeset
585 }
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parents: 99
diff changeset
586
154
c2e5101682ae Expr extends Expressions
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parents: 153
diff changeset
587 private Expressions Expr(In in) throws ParseException {
104
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diff changeset
588 parser.begin();
154
c2e5101682ae Expr extends Expressions
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parents: 153
diff changeset
589 Expressions exp;
129
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diff changeset
590 return (exp = VarArgs(in)) != null
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diff changeset
591 || (exp = OrExpr(in)) != null
107
dbf459397217 change OutputStatement to JspExpressions;
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parents: 106
diff changeset
592 ? parser.success(exp)
154
c2e5101682ae Expr extends Expressions
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parents: 153
diff changeset
593 : parser.failure((Expressions)null)
107
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parents: 106
diff changeset
594 ;
19
a7c13c6017f7 add GenericForStmt
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595 }
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diff changeset
596
154
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diff changeset
597 private Expressions OrExpr(In in) throws ParseException {
104
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598 int start = parser.begin();
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diff changeset
599 Expressions exp = AndExpr(in);
104
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600 if( exp==null )
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601 return parser.failure(null);
129
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diff changeset
602 while( Keyword("or",in) ) {
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603 exp = new OrExpr( se(start), expr(exp), required(expr(AndExpr(in))) );
104
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604 }
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diff changeset
605 return parser.success(exp);
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diff changeset
606 }
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diff changeset
607
154
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parents: 153
diff changeset
608 private Expressions AndExpr(In in) throws ParseException {
104
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diff changeset
609 int start = parser.begin();
154
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diff changeset
610 Expressions exp = RelExpr(in);
104
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diff changeset
611 if( exp==null )
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diff changeset
612 return parser.failure(null);
129
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diff changeset
613 while( Keyword("and",in) ) {
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diff changeset
614 exp = new AndExpr( se(start), expr(exp), required(expr(RelExpr(in))) );
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diff changeset
615 }
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parents: 99
diff changeset
616 return parser.success(exp);
18
3971113699b8 add NumericForStmt
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parents: 17
diff changeset
617 }
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parents: 17
diff changeset
618
154
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 153
diff changeset
619 private Expressions RelExpr(In in) throws ParseException {
104
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diff changeset
620 int start = parser.begin();
154
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diff changeset
621 Expressions exp = ConcatExpr(in);
104
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diff changeset
622 if( exp==null )
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parents: 99
diff changeset
623 return parser.failure(null);
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diff changeset
624 while(true) {
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parents: 99
diff changeset
625 if( parser.match("==") ) {
129
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diff changeset
626 Spaces(in);
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diff changeset
627 exp = new EqExpr( se(start), expr(exp), required(expr(ConcatExpr(in))) );
104
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diff changeset
628 } else if( parser.match("~=") ) {
129
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diff changeset
629 Spaces(in);
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diff changeset
630 exp = new NotExpr( se(start), new EqExpr( se(start), expr(exp), required(expr(ConcatExpr(in))) ) );
104
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diff changeset
631 } else if( parser.match("<=") ) {
129
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diff changeset
632 Spaces(in);
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diff changeset
633 exp = new LeExpr( se(start), expr(exp), required(expr(ConcatExpr(in))) );
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diff changeset
634 } else if( parser.match(">=") ) {
129
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diff changeset
635 Spaces(in);
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diff changeset
636 exp = new LeExpr( se(start), required(expr(ConcatExpr(in))), expr(exp) );
104
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diff changeset
637 } else if( parser.match("<") ) {
129
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diff changeset
638 Spaces(in);
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diff changeset
639 exp = new LtExpr( se(start), expr(exp), required(expr(ConcatExpr(in))) );
104
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parents: 99
diff changeset
640 } else if( parser.match(">") ) {
129
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diff changeset
641 Spaces(in);
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parents: 128
diff changeset
642 exp = new LtExpr( se(start), required(expr(ConcatExpr(in))), expr(exp) );
104
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diff changeset
643 } else
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parents: 99
diff changeset
644 break;
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diff changeset
645 }
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diff changeset
646 return parser.success(exp);
42
786699c78837 implement try-catch
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parents: 40
diff changeset
647 }
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diff changeset
648
154
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diff changeset
649 private Expressions ConcatExpr(In in) throws ParseException {
104
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diff changeset
650 int start = parser.begin();
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diff changeset
651 Expressions exp = SumExpr(in);
104
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diff changeset
652 if( exp==null )
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parents: 99
diff changeset
653 return parser.failure(null);
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parents: 99
diff changeset
654 if( parser.match("..") ) {
129
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diff changeset
655 Spaces(in);
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parents: 128
diff changeset
656 exp = new ConcatExpr( se(start), expr(exp), required(expr(ConcatExpr(in))) );
104
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diff changeset
657 }
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parents: 99
diff changeset
658 return parser.success(exp);
28
df923e5835b2 fix local initial assignment
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parents: 26
diff changeset
659 }
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parents: 26
diff changeset
660
154
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parents: 153
diff changeset
661 private Expressions SumExpr(In in) throws ParseException {
104
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diff changeset
662 int start = parser.begin();
154
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diff changeset
663 Expressions exp = TermExpr(in);
104
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diff changeset
664 if( exp==null )
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diff changeset
665 return parser.failure(null);
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parents: 99
diff changeset
666 while(true) {
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parents: 99
diff changeset
667 if( parser.match('+') ) {
129
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diff changeset
668 Spaces(in);
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parents: 128
diff changeset
669 exp = new AddExpr( se(start), expr(exp), required(expr(TermExpr(in))) );
104
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diff changeset
670 } else if( Minus() ) {
129
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diff changeset
671 Spaces(in);
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diff changeset
672 exp = new SubExpr( se(start), expr(exp), required(expr(TermExpr(in))) );
104
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diff changeset
673 } else
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diff changeset
674 break;
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diff changeset
675 }
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parents: 99
diff changeset
676 return parser.success(exp);
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diff changeset
677 }
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parents: 99
diff changeset
678
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parents: 99
diff changeset
679 private boolean Minus() {
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parents: 99
diff changeset
680 parser.begin();
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diff changeset
681 return parser.match('-') && !parser.match('-') ? parser.success() : parser.failure();
12
9cea1aea5eef CmdLine can run files
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parents: 11
diff changeset
682 }
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diff changeset
683
154
c2e5101682ae Expr extends Expressions
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diff changeset
684 private Expressions TermExpr(In in) throws ParseException {
104
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diff changeset
685 int start = parser.begin();
154
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diff changeset
686 Expressions exp = UnaryExpr(in);
104
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diff changeset
687 if( exp==null )
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parents: 99
diff changeset
688 return parser.failure(null);
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parents: 99
diff changeset
689 while(true) {
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parents: 99
diff changeset
690 if( parser.match('*') ) {
129
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diff changeset
691 Spaces(in);
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diff changeset
692 exp = new MulExpr( se(start), expr(exp), required(expr(UnaryExpr(in))) );
104
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diff changeset
693 } else if( parser.match('/') ) {
129
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diff changeset
694 Spaces(in);
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diff changeset
695 exp = new DivExpr( se(start), expr(exp), required(expr(UnaryExpr(in))) );
107
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parents: 106
diff changeset
696 } else if( Mod() ) {
129
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diff changeset
697 Spaces(in);
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parents: 128
diff changeset
698 exp = new ModExpr( se(start), expr(exp), required(expr(UnaryExpr(in))) );
104
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parents: 99
diff changeset
699 } else
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diff changeset
700 break;
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diff changeset
701 }
104
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diff changeset
702 return parser.success(exp);
17
09d41f7490a8 add local variables
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parents: 16
diff changeset
703 }
09d41f7490a8 add local variables
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parents: 16
diff changeset
704
107
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parents: 106
diff changeset
705 private boolean Mod() {
dbf459397217 change OutputStatement to JspExpressions;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 106
diff changeset
706 parser.begin();
dbf459397217 change OutputStatement to JspExpressions;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 106
diff changeset
707 return parser.match('%') && !parser.match('>') ? parser.success() : parser.failure();
dbf459397217 change OutputStatement to JspExpressions;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 106
diff changeset
708 }
dbf459397217 change OutputStatement to JspExpressions;
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parents: 106
diff changeset
709
154
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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diff changeset
710 private Expressions UnaryExpr(In in) throws ParseException {
104
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diff changeset
711 int start = parser.begin();
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
712 if( parser.match('#') ) {
129
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diff changeset
713 Spaces(in);
486a0641bca4 add pickle client/server;
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diff changeset
714 return parser.success( new LenExpr( se(start), required(expr(UnaryExpr(in))) ) );
104
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parents: 99
diff changeset
715 }
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parents: 99
diff changeset
716 if( Minus() ) {
129
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diff changeset
717 Spaces(in);
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diff changeset
718 return parser.success( new UnmExpr( se(start), required(expr(UnaryExpr(in))) ) );
104
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parents: 99
diff changeset
719 }
129
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diff changeset
720 if( Keyword("not",in) ) {
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parents: 128
diff changeset
721 Spaces(in);
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diff changeset
722 return parser.success( new NotExpr( se(start), required(expr(UnaryExpr(in))) ) );
104
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parents: 99
diff changeset
723 }
154
c2e5101682ae Expr extends Expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 153
diff changeset
724 Expressions exp = PowExpr(in);
104
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parents: 99
diff changeset
725 if( exp==null )
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
726 return parser.failure(null);
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
727 return parser.success(exp);
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
728 }
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
729
154
c2e5101682ae Expr extends Expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 153
diff changeset
730 private Expressions PowExpr(In in) throws ParseException {
104
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diff changeset
731 int start = parser.begin();
154
c2e5101682ae Expr extends Expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 153
diff changeset
732 Expressions exp = SingleExpr(in);
104
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parents: 99
diff changeset
733 if( exp==null )
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
734 return parser.failure(null);
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
735 if( parser.match('^') ) {
129
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parents: 128
diff changeset
736 Spaces(in);
486a0641bca4 add pickle client/server;
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diff changeset
737 exp = new ConcatExpr( se(start), expr(exp), required(expr(PowExpr(in))) );
104
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parents: 99
diff changeset
738 }
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
739 return parser.success(exp);
14
2ddf85634d20 whitespace handling;
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parents: 12
diff changeset
740 }
2ddf85634d20 whitespace handling;
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parents: 12
diff changeset
741
154
c2e5101682ae Expr extends Expressions
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parents: 153
diff changeset
742 private Expressions SingleExpr(In in) throws ParseException {
104
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parents: 99
diff changeset
743 parser.begin();
154
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parents: 153
diff changeset
744 Expressions exp;
129
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diff changeset
745 exp = FunctionExpr(in);
104
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parents: 99
diff changeset
746 if( exp != null )
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
747 return parser.success(exp);
129
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diff changeset
748 exp = TableExpr(in);
104
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parents: 99
diff changeset
749 if( exp != null )
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
750 return parser.success(exp);
129
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diff changeset
751 exp = VarExp(in);
104
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parents: 99
diff changeset
752 if( exp != null )
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
753 return parser.success(exp);
129
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diff changeset
754 exp = Literal(in);
104
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parents: 99
diff changeset
755 if( exp != null )
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
756 return parser.success(exp);
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
757 return parser.failure(null);
14
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parents: 12
diff changeset
758 }
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parents: 12
diff changeset
759
129
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parents: 128
diff changeset
760 private Expr FunctionExpr(In in) throws ParseException {
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parents: 128
diff changeset
761 if( !Keyword("function",in) )
104
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parents: 99
diff changeset
762 return null;
129
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parents: 128
diff changeset
763 return RequiredFunction(in);
20
d85510d92eee add BreakStmt
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parents: 19
diff changeset
764 }
d85510d92eee add BreakStmt
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parents: 19
diff changeset
765
129
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diff changeset
766 private FnDef RequiredFunction(In in) throws ParseException {
104
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parents: 99
diff changeset
767 int start = parser.begin();
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
768 RequiredMatch('(');
129
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diff changeset
769 In inParens = in.parens();
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parents: 128
diff changeset
770 Spaces(inParens);
104
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parents: 99
diff changeset
771 frame = new Frame(frame);
129
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diff changeset
772 List<String> names = NameList(in);
104
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parents: 99
diff changeset
773 if( names != null ) {
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
774 addSymbols(names);
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
775 if( parser.match(',') ) {
129
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diff changeset
776 Spaces(inParens);
104
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parents: 99
diff changeset
777 if( !parser.match("...") )
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
778 throw parser.exception();
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
779 frame.isVarArg = true;
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
780 }
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parents: 99
diff changeset
781 } else if( parser.match("...") ) {
129
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parents: 128
diff changeset
782 Spaces(inParens);
104
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parents: 99
diff changeset
783 frame.isVarArg = true;
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
784 }
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parents: 99
diff changeset
785 RequiredMatch(')');
129
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parents: 128
diff changeset
786 Spaces(in);
104
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parents: 99
diff changeset
787 Stmt block = RequiredBlock();
129
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diff changeset
788 RequiredKeyword("end",in);
104
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parents: 99
diff changeset
789 FnDef fnDef = newFnDef(start,block);
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
790 frame = frame.parent;
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
791 return parser.success(fnDef);
11
b7d7069fee58 add assignment statement and CmdLine
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parents: 9
diff changeset
792 }
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diff changeset
793
129
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diff changeset
794 private VarArgs VarArgs(In in) throws ParseException {
104
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diff changeset
795 int start = parser.begin();
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parents: 99
diff changeset
796 if( !frame.isVarArg || !parser.match("...") )
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diff changeset
797 return parser.failure(null);
129
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diff changeset
798 Spaces(in);
104
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diff changeset
799 return parser.success( new VarArgs(se(start)) );
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diff changeset
800 }
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diff changeset
801
129
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diff changeset
802 private Expr TableExpr(In in) throws ParseException {
104
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diff changeset
803 int start = parser.begin();
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parents: 99
diff changeset
804 if( !parser.match('{') )
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diff changeset
805 return parser.failure(null);
129
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diff changeset
806 In inParens = in.parens();
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parents: 128
diff changeset
807 Spaces(inParens);
104
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diff changeset
808 List<TableExpr.Field> fields = new ArrayList<TableExpr.Field>();
154
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 153
diff changeset
809 List<Expressions> builder = new ArrayList<Expressions>();
129
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diff changeset
810 while( Field(fields,builder,in) && FieldSep(inParens) );
148
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parents: 139
diff changeset
811 Spaces(inParens);
107
dbf459397217 change OutputStatement to JspExpressions;
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parents: 106
diff changeset
812 if( !parser.match('}') )
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parents: 106
diff changeset
813 throw parser.exception("Expected table element or '}'");
154
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diff changeset
814 return parser.success( new TableExpr( se(start), fields.toArray(new TableExpr.Field[0]), ExpList.build(builder) ) );
104
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diff changeset
815 }
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diff changeset
816
129
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diff changeset
817 private boolean FieldSep(In in) throws ParseException {
104
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parents: 99
diff changeset
818 if( !parser.anyOf(",;") )
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diff changeset
819 return false;
129
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diff changeset
820 Spaces(in);
14
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parents: 12
diff changeset
821 return true;
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parents: 12
diff changeset
822 }
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diff changeset
823
154
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diff changeset
824 private boolean Field(List<TableExpr.Field> fields,List<Expressions> builder,In in) throws ParseException {
104
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diff changeset
825 parser.begin();
129
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diff changeset
826 Expr exp = SubExpr(in);
104
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parents: 99
diff changeset
827 if( exp==null )
129
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diff changeset
828 exp = NameExpr(in);
104
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parents: 99
diff changeset
829 if( exp!=null && parser.match('=') ) {
137
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parents: 129
diff changeset
830 Spaces(in);
129
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diff changeset
831 fields.add( new TableExpr.Field( exp, required(expr(Expr(in))) ) );
104
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diff changeset
832 return parser.success();
17
09d41f7490a8 add local variables
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diff changeset
833 }
104
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diff changeset
834 parser.rollback();
154
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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diff changeset
835 Expressions exprs = Expr(in);
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 153
diff changeset
836 if( exprs != null ) {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 153
diff changeset
837 builder.add(exprs);
104
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diff changeset
838 return parser.success();
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parents: 99
diff changeset
839 }
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parents: 99
diff changeset
840 return parser.failure();
7
bca8fc5d928b work on expressions
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parents: 6
diff changeset
841 }
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parents: 6
diff changeset
842
154
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 153
diff changeset
843 private Expressions VarExp(In in) throws ParseException {
129
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diff changeset
844 Var var = VarZ(in);
104
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diff changeset
845 return var==null ? null : var.expr();
8
8896068e0a4b finish operators
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parents: 7
diff changeset
846 }
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diff changeset
847
129
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diff changeset
848 private Var VarZ(In in) throws ParseException {
104
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diff changeset
849 int start = parser.begin();
129
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diff changeset
850 Var var = VarStart(in);
104
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diff changeset
851 if( var==null )
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parents: 99
diff changeset
852 return parser.failure(null);
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diff changeset
853 Var var2;
129
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diff changeset
854 while( (var2=Var2(in,start,var.expr())) != null ) {
104
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diff changeset
855 var = var2;
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parents: 99
diff changeset
856 }
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
857 return parser.success(var);
7
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parents: 6
diff changeset
858 }
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parents: 6
diff changeset
859
154
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parents: 153
diff changeset
860 private Var Var2(In in,int start,Expressions exp1) throws ParseException {
155
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parents: 154
diff changeset
861 parser.begin();
129
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diff changeset
862 Var var = VarExt(in,start,exp1);
104
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diff changeset
863 if( var != null )
155
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parents: 154
diff changeset
864 return parser.success(var);
104
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diff changeset
865 if( parser.match("->") ) {
129
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diff changeset
866 Spaces(in);
154
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diff changeset
867 List<Expressions> builder = new ArrayList<Expressions>();
104
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diff changeset
868 builder.add(exp1);
129
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diff changeset
869 Expr exp2 = expr(RequiredVarExpB(in));
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diff changeset
870 FnCall fnCall = required(Args( in, start, exp2, builder ));
155
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parents: 154
diff changeset
871 return parser.success(exprVar(fnCall));
104
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diff changeset
872 }
154
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diff changeset
873 FnCall fnCall = Args( in, start, expr(exp1), new ArrayList<Expressions>() );
104
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diff changeset
874 if( fnCall != null )
155
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parents: 154
diff changeset
875 return parser.success(exprVar(fnCall));
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parents: 154
diff changeset
876 return parser.failure(null);
21
c93d8c781853 add functions
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parents: 20
diff changeset
877 }
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diff changeset
878
154
c2e5101682ae Expr extends Expressions
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parents: 153
diff changeset
879 private Expressions RequiredVarExpB(In in) throws ParseException {
104
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diff changeset
880 int start = parser.begin();
129
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diff changeset
881 Var var = required(VarStart(in));
104
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diff changeset
882 Var var2;
129
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diff changeset
883 while( (var2=VarExt(in,start,var.expr())) != null ) {
104
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diff changeset
884 var = var2;
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parents: 99
diff changeset
885 }
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parents: 99
diff changeset
886 return parser.success(var.expr());
9
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parents: 8
diff changeset
887 }
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parents: 8
diff changeset
888
154
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diff changeset
889 private Var VarExt(In in,int start,Expressions exp1) throws ParseException {
104
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diff changeset
890 parser.begin();
129
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parents: 128
diff changeset
891 Expr exp2 = SubExpr(in);
104
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
892 if( exp2 != null )
107
dbf459397217 change OutputStatement to JspExpressions;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 106
diff changeset
893 return parser.success(indexVar(start,expr(exp1),exp2));
104
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
894 if( parser.match('.') ) {
129
486a0641bca4 add pickle client/server;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 128
diff changeset
895 Spaces(in);
486a0641bca4 add pickle client/server;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 128
diff changeset
896 exp2 = NameExpr(in);
104
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
897 if( exp2!=null )
107
dbf459397217 change OutputStatement to JspExpressions;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 106
diff changeset
898 return parser.success(indexVar(start,expr(exp1),exp2));
104
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
899 }
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
900 return parser.failure(null);
11
b7d7069fee58 add assignment statement and CmdLine
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 9
diff changeset
901 }
b7d7069fee58 add assignment statement and CmdLine
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 9
diff changeset
902
129
486a0641bca4 add pickle client/server;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 128
diff changeset
903 private Var VarStart(In in) throws ParseException {
104
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
904 int start = parser.begin();
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
905 if( parser.match('(') ) {
129
486a0641bca4 add pickle client/server;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 128
diff changeset
906 In inParens = in.parens();
486a0641bca4 add pickle client/server;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 128
diff changeset
907 Spaces(inParens);
158
cced1c4d3575 only allow TemplateExpressions at end of expr list;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 157
diff changeset
908 Expr exp = expr(RequiredExpr(inParens));
104
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
909 RequiredMatch(')');
129
486a0641bca4 add pickle client/server;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 128
diff changeset
910 Spaces(in);
104
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
911 return parser.success(exprVar(exp));
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
912 }
129
486a0641bca4 add pickle client/server;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 128
diff changeset
913 String name = Name(in);
104
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
914 if( name != null )
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
915 return parser.success(nameVar(start,name));
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
916 return parser.failure(null);
9
600676034a1a add variables and tables
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 8
diff changeset
917 }
600676034a1a add variables and tables
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 8
diff changeset
918
104
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
919 private Expr env() {
34
0cdc1da466ee implement _G and _ENV
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 33
diff changeset
920 int index = stackIndex(_ENV);
0cdc1da466ee implement _G and _ENV
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 33
diff changeset
921 if( index != -1 )
40
e3624b7cd603 implement stack trace
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 35
diff changeset
922 return new GetLocalVar(null,index);
34
0cdc1da466ee implement _G and _ENV
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 33
diff changeset
923 index = upValueIndex(_ENV);
0cdc1da466ee implement _G and _ENV
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 33
diff changeset
924 if( index != -1 )
40
e3624b7cd603 implement stack trace
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 35
diff changeset
925 return new GetUpVar(null,index);
34
0cdc1da466ee implement _G and _ENV
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 33
diff changeset
926 throw new RuntimeException("_ENV not found");
0cdc1da466ee implement _G and _ENV
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 33
diff changeset
927 }
0cdc1da466ee implement _G and _ENV
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 33
diff changeset
928
104
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
929 private interface Var {
154
c2e5101682ae Expr extends Expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 153
diff changeset
930 public Expressions expr();
104
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
931 public Settable settable();
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
932 }
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
933
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
934 private Var nameVar(final int start,final String name) {
190
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 186
diff changeset
935 return nameVar(se(start,name),name);
157
1de3e4a6e82d remove LuanJavaFunction.RTN_NUMBER_ARRAY;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 155
diff changeset
936 }
1de3e4a6e82d remove LuanJavaFunction.RTN_NUMBER_ARRAY;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 155
diff changeset
937
1de3e4a6e82d remove LuanJavaFunction.RTN_NUMBER_ARRAY;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 155
diff changeset
938 private Var nameVar(final LuanSource.Element se,final String name) {
104
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
939 return new Var() {
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
940
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
941 public Expr expr() {
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
942 int index = stackIndex(name);
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
943 if( index != -1 )
157
1de3e4a6e82d remove LuanJavaFunction.RTN_NUMBER_ARRAY;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 155
diff changeset
944 return new GetLocalVar(se,index);
104
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
945 index = upValueIndex(name);
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
946 if( index != -1 )
157
1de3e4a6e82d remove LuanJavaFunction.RTN_NUMBER_ARRAY;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 155
diff changeset
947 return new GetUpVar(se,index);
1de3e4a6e82d remove LuanJavaFunction.RTN_NUMBER_ARRAY;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 155
diff changeset
948 return new IndexExpr( se, env(), new ConstExpr(name) );
104
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
949 }
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
950
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
951 public Settable settable() {
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
952 int index = stackIndex(name);
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
953 if( index != -1 )
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
954 return new SetLocalVar(index);
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
955 index = upValueIndex(name);
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
956 if( index != -1 )
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
957 return new SetUpVar(index);
157
1de3e4a6e82d remove LuanJavaFunction.RTN_NUMBER_ARRAY;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 155
diff changeset
958 return new SetTableEntry( se, env(), new ConstExpr(name) );
104
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
959 }
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
960 };
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
961 }
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
962
154
c2e5101682ae Expr extends Expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 153
diff changeset
963 private Var exprVar(final Expressions expr) {
104
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
964 return new Var() {
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
965
154
c2e5101682ae Expr extends Expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 153
diff changeset
966 public Expressions expr() {
104
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
967 return expr;
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
968 }
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
969
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
970 public Settable settable() {
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
971 return null;
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
972 }
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
973 };
11
b7d7069fee58 add assignment statement and CmdLine
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 9
diff changeset
974 }
b7d7069fee58 add assignment statement and CmdLine
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 9
diff changeset
975
104
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
976 private Var indexVar(final int start,final Expr table,final Expr key) {
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
977 return new Var() {
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
978
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
979 public Expr expr() {
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
980 return new IndexExpr( se(start), table, key );
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
981 }
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
982
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
983 public Settable settable() {
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
984 return new SetTableEntry(se(start),table,key);
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
985 }
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
986 };
9
600676034a1a add variables and tables
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 8
diff changeset
987 }
600676034a1a add variables and tables
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 8
diff changeset
988
154
c2e5101682ae Expr extends Expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 153
diff changeset
989 private FnCall Args(In in,int start,Expr fn,List<Expressions> builder) throws ParseException {
104
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
990 parser.begin();
129
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991 return args(in,builder)
154
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992 ? parser.success( new FnCall( se(start), fn, ExpList.build(builder) ) )
107
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993 : parser.failure((FnCall)null);
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994 }
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995
154
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diff changeset
996 private boolean args(In in,List<Expressions> builder) throws ParseException {
104
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diff changeset
997 if( parser.match('(') ) {
129
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diff changeset
998 In inParens = in.parens();
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diff changeset
999 Spaces(inParens);
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1000 ExpList(inParens,builder); // optional
107
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diff changeset
1001 if( !parser.match(')') )
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diff changeset
1002 throw parser.exception("Expression or ')' expected");
129
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diff changeset
1003 Spaces(in);
107
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diff changeset
1004 return true;
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1005 }
129
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diff changeset
1006 Expr exp = TableExpr(in);
107
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diff changeset
1007 if( exp != null ) {
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diff changeset
1008 builder.add(exp);
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diff changeset
1009 return true;
104
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1010 }
129
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diff changeset
1011 String s = StringLiteral(in);
107
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diff changeset
1012 if( s != null ) {
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diff changeset
1013 builder.add( new ConstExpr(s) );
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diff changeset
1014 return true;
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1015 }
181
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diff changeset
1016 /*
157
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diff changeset
1017 Expressions exps = TemplateExpressions(in);
107
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diff changeset
1018 if( exps != null ) {
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diff changeset
1019 builder.add(exps);
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diff changeset
1020 return true;
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1021 }
181
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diff changeset
1022 */
107
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diff changeset
1023 return false;
11
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diff changeset
1024 }
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diff changeset
1025
129
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diff changeset
1026 private Expressions ExpList(In in) throws ParseException {
154
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diff changeset
1027 List<Expressions> builder = new ArrayList<Expressions>();
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diff changeset
1028 return ExpList(in,builder) ? ExpList.build(builder) : null;
104
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diff changeset
1029 }
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diff changeset
1030
154
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diff changeset
1031 private boolean ExpList(In in,List<Expressions> builder) throws ParseException {
104
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diff changeset
1032 parser.begin();
158
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diff changeset
1033 Expressions exp = TemplateExpressions(in);
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diff changeset
1034 if( exp != null ) {
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diff changeset
1035 builder.add(exp);
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diff changeset
1036 return parser.success();
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diff changeset
1037 }
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diff changeset
1038 exp = Expr(in);
104
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diff changeset
1039 if( exp==null )
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diff changeset
1040 return parser.failure();
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diff changeset
1041 builder.add(exp);
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diff changeset
1042 while( parser.match(',') ) {
129
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diff changeset
1043 Spaces(in);
158
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diff changeset
1044 exp = TemplateExpressions(in);
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diff changeset
1045 if( exp != null ) {
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diff changeset
1046 builder.add(exp);
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diff changeset
1047 return parser.success();
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diff changeset
1048 }
129
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diff changeset
1049 builder.add( RequiredExpr(in) );
104
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diff changeset
1050 }
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diff changeset
1051 return parser.success();
9
600676034a1a add variables and tables
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parents: 8
diff changeset
1052 }
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diff changeset
1053
129
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diff changeset
1054 private Expr SubExpr(In in) throws ParseException {
104
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diff changeset
1055 parser.begin();
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parents: 99
diff changeset
1056 if( !parser.match('[') )
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diff changeset
1057 return parser.failure(null);
129
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diff changeset
1058 In inParens = in.parens();
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parents: 128
diff changeset
1059 Spaces(inParens);
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diff changeset
1060 Expr exp = expr(RequiredExpr(inParens));
104
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diff changeset
1061 RequiredMatch(']');
129
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diff changeset
1062 Spaces(in);
104
754e6030c029 remove parboiled and rewrite parser;
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diff changeset
1063 return parser.success(exp);
11
b7d7069fee58 add assignment statement and CmdLine
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parents: 9
diff changeset
1064 }
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diff changeset
1065
129
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diff changeset
1066 private Expr NameExpr(In in) throws ParseException {
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diff changeset
1067 String name = Name(in);
104
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parents: 99
diff changeset
1068 return name==null ? null : new ConstExpr(name);
54
f5b27ef14d73 add OutputStmt
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parents: 51
diff changeset
1069 }
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parents: 51
diff changeset
1070
129
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diff changeset
1071 private String RequiredName(In in) throws ParseException {
104
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diff changeset
1072 parser.begin();
129
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diff changeset
1073 String name = Name(in);
104
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diff changeset
1074 if( name==null )
139
3b384dc5ca91 replace WebShell.java with web_shell.luan
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diff changeset
1075 throw parser.exception("Name expected");
104
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diff changeset
1076 return parser.success(name);
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diff changeset
1077 }
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diff changeset
1078
129
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diff changeset
1079 private String Name(In in) throws ParseException {
104
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parents: 99
diff changeset
1080 int start = parser.begin();
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parents: 99
diff changeset
1081 if( !NameFirstChar() )
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1082 return parser.failure(null);
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parents: 99
diff changeset
1083 while( NameChar() );
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1084 String match = parser.textFrom(start);
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parents: 99
diff changeset
1085 if( keywords.contains(match) )
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1086 return parser.failure(null);
129
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diff changeset
1087 Spaces(in);
104
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1088 return parser.success(match);
17
09d41f7490a8 add local variables
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parents: 16
diff changeset
1089 }
09d41f7490a8 add local variables
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diff changeset
1090
104
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diff changeset
1091 private boolean NameChar() {
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1092 return NameFirstChar() || Digit();
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1093 }
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1094
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1095 private boolean NameFirstChar() {
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1096 return parser.inCharRange('a', 'z') || parser.inCharRange('A', 'Z') || parser.match('_');
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1097 }
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parents: 99
diff changeset
1098
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1099 private void RequiredMatch(char c) throws ParseException {
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1100 if( !parser.match(c) )
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1101 throw parser.exception("'"+c+"' expected");
9
600676034a1a add variables and tables
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parents: 8
diff changeset
1102 }
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parents: 8
diff changeset
1103
104
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parents: 99
diff changeset
1104 private void RequiredMatch(String s) throws ParseException {
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1105 if( !parser.match(s) )
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1106 throw parser.exception("'"+s+"' expected");
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1107 }
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1108
129
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diff changeset
1109 private void RequiredKeyword(String keyword,In in) throws ParseException {
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diff changeset
1110 if( !Keyword(keyword,in) )
104
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parents: 99
diff changeset
1111 throw parser.exception("'"+keyword+"' expected");
9
600676034a1a add variables and tables
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parents: 8
diff changeset
1112 }
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parents: 8
diff changeset
1113
129
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diff changeset
1114 private boolean Keyword(String keyword,In in) throws ParseException {
104
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parents: 99
diff changeset
1115 parser.begin();
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parents: 99
diff changeset
1116 if( !parser.match(keyword) || NameChar() )
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1117 return parser.failure();
129
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diff changeset
1118 Spaces(in);
104
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1119 return parser.success();
12
9cea1aea5eef CmdLine can run files
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parents: 11
diff changeset
1120 }
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parents: 11
diff changeset
1121
104
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parents: 99
diff changeset
1122 private static final Set<String> keywords = new HashSet<String>(Arrays.asList(
12
9cea1aea5eef CmdLine can run files
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parents: 11
diff changeset
1123 "and",
9cea1aea5eef CmdLine can run files
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parents: 11
diff changeset
1124 "break",
42
786699c78837 implement try-catch
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parents: 40
diff changeset
1125 "catch",
12
9cea1aea5eef CmdLine can run files
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parents: 11
diff changeset
1126 "do",
9cea1aea5eef CmdLine can run files
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parents: 11
diff changeset
1127 "else",
9cea1aea5eef CmdLine can run files
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parents: 11
diff changeset
1128 "elseif",
9cea1aea5eef CmdLine can run files
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parents: 11
diff changeset
1129 "end",
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parents: 11
diff changeset
1130 "false",
9cea1aea5eef CmdLine can run files
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parents: 11
diff changeset
1131 "for",
9cea1aea5eef CmdLine can run files
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parents: 11
diff changeset
1132 "function",
9cea1aea5eef CmdLine can run files
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parents: 11
diff changeset
1133 "goto",
9cea1aea5eef CmdLine can run files
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parents: 11
diff changeset
1134 "if",
108
3c404a296995 make Package module more standard;
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parents: 107
diff changeset
1135 "import",
12
9cea1aea5eef CmdLine can run files
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parents: 11
diff changeset
1136 "in",
9cea1aea5eef CmdLine can run files
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parents: 11
diff changeset
1137 "local",
9cea1aea5eef CmdLine can run files
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parents: 11
diff changeset
1138 "nil",
9cea1aea5eef CmdLine can run files
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parents: 11
diff changeset
1139 "not",
9cea1aea5eef CmdLine can run files
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parents: 11
diff changeset
1140 "or",
9cea1aea5eef CmdLine can run files
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parents: 11
diff changeset
1141 "repeat",
9cea1aea5eef CmdLine can run files
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parents: 11
diff changeset
1142 "return",
9cea1aea5eef CmdLine can run files
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parents: 11
diff changeset
1143 "then",
9cea1aea5eef CmdLine can run files
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 11
diff changeset
1144 "true",
42
786699c78837 implement try-catch
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parents: 40
diff changeset
1145 "try",
12
9cea1aea5eef CmdLine can run files
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parents: 11
diff changeset
1146 "until",
9cea1aea5eef CmdLine can run files
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parents: 11
diff changeset
1147 "while"
9cea1aea5eef CmdLine can run files
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parents: 11
diff changeset
1148 ));
9cea1aea5eef CmdLine can run files
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parents: 11
diff changeset
1149
129
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parents: 128
diff changeset
1150 private Expr Literal(In in) throws ParseException {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 128
diff changeset
1151 if( NilLiteral(in) )
104
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parents: 99
diff changeset
1152 return new ConstExpr(null);
129
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parents: 128
diff changeset
1153 Boolean b = BooleanLiteral(in);
104
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parents: 99
diff changeset
1154 if( b != null )
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1155 return new ConstExpr(b);
129
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parents: 128
diff changeset
1156 Number n = NumberLiteral(in);
104
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parents: 99
diff changeset
1157 if( n != null )
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1158 return new ConstExpr(n);
129
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diff changeset
1159 String s = StringLiteral(in);
104
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parents: 99
diff changeset
1160 if( s != null )
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parents: 99
diff changeset
1161 return new ConstExpr(s);
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1162 return null;
5
9ef0fd711101 start LuaParser
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parents:
diff changeset
1163 }
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parents:
diff changeset
1164
129
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parents: 128
diff changeset
1165 private boolean NilLiteral(In in) throws ParseException {
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parents: 128
diff changeset
1166 return Keyword("nil",in);
65
1ff53a88579a multi-line statements
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parents: 60
diff changeset
1167 }
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parents: 60
diff changeset
1168
129
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diff changeset
1169 private Boolean BooleanLiteral(In in) throws ParseException {
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parents: 128
diff changeset
1170 if( Keyword("true",in) )
104
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diff changeset
1171 return true;
129
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diff changeset
1172 if( Keyword("false",in) )
104
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diff changeset
1173 return false;
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parents: 99
diff changeset
1174 return null;
5
9ef0fd711101 start LuaParser
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
1175 }
9ef0fd711101 start LuaParser
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parents:
diff changeset
1176
129
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diff changeset
1177 private Number NumberLiteral(In in) throws ParseException {
104
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parents: 99
diff changeset
1178 parser.begin();
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parents: 99
diff changeset
1179 Number n;
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parents: 99
diff changeset
1180 if( parser.matchIgnoreCase("0x") ) {
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parents: 99
diff changeset
1181 n = HexNumber();
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parents: 99
diff changeset
1182 } else {
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parents: 99
diff changeset
1183 n = DecNumber();
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parents: 99
diff changeset
1184 }
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parents: 99
diff changeset
1185 if( n==null || NameChar() )
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parents: 99
diff changeset
1186 return parser.failure(null);
129
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diff changeset
1187 Spaces(in);
104
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parents: 99
diff changeset
1188 return parser.success(n);
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parents: 99
diff changeset
1189 }
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parents: 99
diff changeset
1190
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parents: 99
diff changeset
1191 private Number DecNumber() {
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1192 int start = parser.begin();
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parents: 99
diff changeset
1193 if( Int() ) {
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parents: 99
diff changeset
1194 if( parser.match('.') )
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parents: 99
diff changeset
1195 Int(); // optional
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parents: 99
diff changeset
1196 } else if( parser.match('.') && Int() ) {
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parents: 99
diff changeset
1197 // ok
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parents: 99
diff changeset
1198 } else
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parents: 99
diff changeset
1199 return parser.failure(null);
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parents: 99
diff changeset
1200 Exponent(); // optional
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parents: 99
diff changeset
1201 return parser.success(Double.valueOf(parser.textFrom(start)));
5
9ef0fd711101 start LuaParser
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parents:
diff changeset
1202 }
9ef0fd711101 start LuaParser
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parents:
diff changeset
1203
104
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parents: 99
diff changeset
1204 private boolean Exponent() {
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1205 parser.begin();
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1206 if( !parser.matchIgnoreCase("e") )
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1207 return parser.failure();
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1208 parser.anyOf("+-"); // optional
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1209 if( !Int() )
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1210 return parser.failure();
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1211 return parser.success();
5
9ef0fd711101 start LuaParser
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
1212 }
9ef0fd711101 start LuaParser
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parents:
diff changeset
1213
104
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parents: 99
diff changeset
1214 private boolean Int() {
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1215 if( !Digit() )
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1216 return false;
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1217 while( Digit() );
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1218 return true;
5
9ef0fd711101 start LuaParser
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parents:
diff changeset
1219 }
9ef0fd711101 start LuaParser
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parents:
diff changeset
1220
104
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parents: 99
diff changeset
1221 private boolean Digit() {
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1222 return parser.inCharRange('0', '9');
16
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parents: 15
diff changeset
1223 }
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parents: 15
diff changeset
1224
104
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parents: 99
diff changeset
1225 private Number HexNumber() {
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1226 int start = parser.begin();
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1227 double n;
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1228 if( HexInt() ) {
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1229 n = (double)Long.parseLong(parser.textFrom(start),16);
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parents: 99
diff changeset
1230 if( parser.match('.') ) {
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1231 start = parser.currentIndex();
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1232 if( HexInt() ) {
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1233 String dec = parser.textFrom(start);
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1234 n += (double)Long.parseLong(dec,16) / Math.pow(16,dec.length());
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parents: 99
diff changeset
1235 }
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parents: 99
diff changeset
1236 }
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parents: 99
diff changeset
1237 } else if( parser.match('.') && HexInt() ) {
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1238 String dec = parser.textFrom(start+1);
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parents: 99
diff changeset
1239 n = (double)Long.parseLong(dec,16) / Math.pow(16,dec.length());
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1240 } else {
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parents: 99
diff changeset
1241 return parser.failure(null);
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1242 }
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parents: 99
diff changeset
1243 if( parser.matchIgnoreCase("p") ) {
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1244 parser.anyOf("+-"); // optional
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1245 start = parser.currentIndex();
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1246 if( !HexInt() )
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1247 return parser.failure(null);
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1248 n *= Math.pow(2,(double)Long.parseLong(parser.textFrom(start)));
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1249 }
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1250 return parser.success(Double.valueOf(n));
16
2a30281ef47c finish number literals;
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parents: 15
diff changeset
1251 }
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parents: 15
diff changeset
1252
104
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1253 private boolean HexInt() {
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1254 if( !HexDigit() )
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1255 return false;
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1256 while( HexDigit() );
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1257 return true;
16
2a30281ef47c finish number literals;
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parents: 15
diff changeset
1258 }
2a30281ef47c finish number literals;
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parents: 15
diff changeset
1259
2a30281ef47c finish number literals;
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parents: 15
diff changeset
1260
104
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1261 private boolean HexDigit() {
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1262 return Digit() || parser.anyOf("abcdefABCDEF");
6
a315783c9524 more parsing
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 5
diff changeset
1263 }
a315783c9524 more parsing
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parents: 5
diff changeset
1264
129
486a0641bca4 add pickle client/server;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 128
diff changeset
1265 private String StringLiteral(In in) throws ParseException {
104
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1266 String s;
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1267 if( (s=QuotedString('"'))==null
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1268 && (s=QuotedString('\''))==null
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1269 && (s=LongString())==null
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1270 )
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1271 return null;
129
486a0641bca4 add pickle client/server;
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parents: 128
diff changeset
1272 Spaces(in);
104
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1273 return s;
16
2a30281ef47c finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 15
diff changeset
1274 }
2a30281ef47c finish number literals;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 15
diff changeset
1275
104
754e6030c029 remove parboiled and rewrite parser;
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parents: 99
diff changeset
1276 private String LongString() throws ParseException {
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1277 parser.begin();
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1278 if( !parser.match('[') )
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1279 return parser.failure(null);
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1280 int start = parser.currentIndex();
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1281 while( parser.match('=') );
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1282 int nEquals = parser.currentIndex() - start;
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1283 if( !parser.match('[') )
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1284 return parser.failure(null);
120
8d7730a5e3b4 move standalone logic from Java to Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 118
diff changeset
1285 EndOfLine();
104
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parents: 99
diff changeset
1286 start = parser.currentIndex();
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1287 while( !LongBracketsEnd(nEquals) ) {
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1288 if( !parser.anyChar() )
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1289 throw parser.exception("Unclosed long string");
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1290 }
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1291 String s = parser.text.substring( start, parser.currentIndex() - nEquals - 2 );
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1292 return parser.success(s);
6
a315783c9524 more parsing
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 5
diff changeset
1293 }
a315783c9524 more parsing
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 5
diff changeset
1294
104
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1295 private String QuotedString(char quote) throws ParseException {
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1296 parser.begin();
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1297 if( !parser.match(quote) )
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1298 return parser.failure(null);
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1299 StringBuilder buf = new StringBuilder();
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1300 while( !parser.match(quote) ) {
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1301 Character c = EscSeq();
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1302 if( c != null ) {
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1303 buf.append(c);
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1304 } else {
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1305 if( !parser.anyChar() )
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1306 throw parser.exception("Unclosed string");
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1307 buf.append(parser.lastChar());
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1308 }
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1309 }
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1310 return parser.success(buf.toString());
6
a315783c9524 more parsing
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 5
diff changeset
1311 }
a315783c9524 more parsing
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 5
diff changeset
1312
104
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1313 private Character EscSeq() {
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1314 parser.begin();
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1315 if( !parser.match('\\') )
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1316 return parser.failure(null);
155
db7b3902e01c fix parsing problems
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 154
diff changeset
1317 if( parser.match('a') ) return parser.success('\u0007');
db7b3902e01c fix parsing problems
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 154
diff changeset
1318 if( parser.match('b') ) return parser.success('\b');
db7b3902e01c fix parsing problems
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 154
diff changeset
1319 if( parser.match('f') ) return parser.success('\f');
db7b3902e01c fix parsing problems
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 154
diff changeset
1320 if( parser.match('n') ) return parser.success('\n');
db7b3902e01c fix parsing problems
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 154
diff changeset
1321 if( parser.match('r') ) return parser.success('\r');
db7b3902e01c fix parsing problems
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 154
diff changeset
1322 if( parser.match('t') ) return parser.success('\t');
db7b3902e01c fix parsing problems
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 154
diff changeset
1323 if( parser.match('v') ) return parser.success('\u000b');
db7b3902e01c fix parsing problems
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 154
diff changeset
1324 if( parser.match('\\') ) return parser.success('\\');
db7b3902e01c fix parsing problems
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 154
diff changeset
1325 if( parser.match('"') ) return parser.success('"');
db7b3902e01c fix parsing problems
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 154
diff changeset
1326 if( parser.match('\'') ) return parser.success('\'');
104
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1327 int start = parser.currentIndex();
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1328 if( parser.match('x') && HexDigit() && HexDigit() )
155
db7b3902e01c fix parsing problems
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 154
diff changeset
1329 return parser.success((char)Integer.parseInt(parser.textFrom(start+1),16));
104
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1330 if( Digit() ) {
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1331 if( Digit() ) Digit(); // optional
155
db7b3902e01c fix parsing problems
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 154
diff changeset
1332 return parser.success((char)Integer.parseInt(parser.textFrom(start)));
104
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1333 }
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1334 return parser.failure(null);
14
2ddf85634d20 whitespace handling;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 12
diff changeset
1335 }
2ddf85634d20 whitespace handling;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 12
diff changeset
1336
129
486a0641bca4 add pickle client/server;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 128
diff changeset
1337 private void Spaces(In in) throws ParseException {
486a0641bca4 add pickle client/server;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 128
diff changeset
1338 while( parser.anyOf(" \t") || Comment() || ContinueOnNextLine() || in.parens && NewLine() );
14
2ddf85634d20 whitespace handling;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 12
diff changeset
1339 }
2ddf85634d20 whitespace handling;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 12
diff changeset
1340
104
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1341 private boolean ContinueOnNextLine() {
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1342 parser.begin();
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1343 return parser.match('\\') && EndOfLine() ? parser.success() : parser.failure();
7
bca8fc5d928b work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 6
diff changeset
1344 }
bca8fc5d928b work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 6
diff changeset
1345
104
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1346 private boolean NewLine() {
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1347 if( !EndOfLine() )
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1348 return false;
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1349 if( parser.match("--") ) {
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1350 while( parser.noneOf("\r\n") );
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1351 }
18
3971113699b8 add NumericForStmt
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 17
diff changeset
1352 return true;
3971113699b8 add NumericForStmt
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 17
diff changeset
1353 }
3971113699b8 add NumericForStmt
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 17
diff changeset
1354
104
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1355 private boolean Comment() throws ParseException {
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1356 parser.begin();
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1357 if( !parser.match("--[") )
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1358 return parser.failure();
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1359 int start = parser.currentIndex();
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1360 while( parser.match('=') );
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1361 int nEquals = parser.currentIndex() - start;
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1362 if( !parser.match('[') )
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1363 return parser.failure();
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1364 while( !LongBracketsEnd(nEquals) ) {
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1365 if( !parser.anyChar() )
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1366 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
1367 }
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1368 return parser.success();
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1369 }
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1370
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1371 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
1372 parser.begin();
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1373 if( !parser.match(']') )
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1374 return parser.failure();
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1375 while( nEquals-- > 0 ) {
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1376 if( !parser.match('=') )
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1377 return parser.failure();
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1378 }
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1379 if( !parser.match(']') )
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1380 return parser.failure();
754e6030c029 remove parboiled and rewrite parser;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 99
diff changeset
1381 return parser.success();
12
9cea1aea5eef CmdLine can run files
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 11
diff changeset
1382 }
9cea1aea5eef CmdLine can run files
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 11
diff changeset
1383
5
9ef0fd711101 start LuaParser
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
1384 }