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annotate src/luan/interp/LuaParser.java @ 11:b7d7069fee58

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add assignment statement and CmdLine git-svn-id: https://luan-java.googlecode.com/svn/trunk@12 21e917c8-12df-6dd8-5cb6-c86387c605b9
author fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
date Thu, 22 Nov 2012 10:51:56 +0000
parents 600676034a1a
children 9cea1aea5eef
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1 package luan.interp;
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2
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3 import java.util.List;
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4 import java.util.ArrayList;
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5 import java.util.Scanner;
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6 import org.parboiled.BaseParser;
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7 import org.parboiled.Parboiled;
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8 import org.parboiled.Rule;
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9 import org.parboiled.parserunners.ReportingParseRunner;
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10 import org.parboiled.support.ParsingResult;
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11 import org.parboiled.errors.ErrorUtils;
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12 import luan.Lua;
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13 import luan.LuaNumber;
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14 import luan.LuaState;
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17 public class LuaParser extends BaseParser<Object> {
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18
11
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19 public Rule Target() {
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20 return Sequence(
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21 Spaces(),
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22 FirstOf(
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23 Sequence( Expressions(), EOI ),
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24 Sequence( Stmt(), EOI )
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25 )
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26 );
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27 }
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28
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29 Rule Stmt() {
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30 return SetStmt();
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31 }
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32
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33 Rule SetStmt() {
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34 return Sequence(
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35 VarList(),
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36 '=', Spaces(),
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37 ExpList(),
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38 push( newSetStmt() )
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39 );
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40 }
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41
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42 SetStmt newSetStmt() {
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43 Expressions values = (Expressions)pop();
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44 @SuppressWarnings("unchecked")
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45 List<SetStmt.Var> vars = (List<SetStmt.Var>)pop();
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46 return new SetStmt( vars.toArray(new SetStmt.Var[0]), values );
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47 }
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48
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49 Rule VarList() {
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50 return Sequence(
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51 push(new ArrayList<SetStmt.Var>()),
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52 Var(),
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53 addToVarList(),
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54 ZeroOrMore(
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55 ',', Spaces(), Var(),
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56 addToVarList()
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57 )
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58 );
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59 }
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60
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61 boolean addToVarList() {
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62 Object obj = pop();
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63 if( obj==null )
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64 return false;
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65 Expr key = expr(obj);
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66 Expr table = expr(pop());
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67 @SuppressWarnings("unchecked")
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68 List<SetStmt.Var> vars = (List<SetStmt.Var>)peek();
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69 vars.add( new SetStmt.Var(table,key) );
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70 return true;
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71 }
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72
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73 Rule Expr() {
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74 return OrExpr();
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75 }
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76
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77 Rule OrExpr() {
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78 return Sequence(
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79 AndExpr(),
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80 ZeroOrMore( "or", Spaces(), AndExpr(), push( new OrExpr(expr(pop(1)),expr(pop())) ) )
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81 );
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82 }
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83
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84 Rule AndExpr() {
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85 return Sequence(
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86 RelExpr(),
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87 ZeroOrMore( "and", Spaces(), RelExpr(), push( new AndExpr(expr(pop(1)),expr(pop())) ) )
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88 );
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89 }
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90
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91 Rule RelExpr() {
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92 return Sequence(
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93 ConcatExpr(),
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94 ZeroOrMore(
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95 FirstOf(
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96 Sequence( "==", Spaces(), ConcatExpr(), push( new EqExpr(expr(pop(1)),expr(pop())) ) ),
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97 Sequence( "~=", Spaces(), ConcatExpr(), push( new NotExpr(new EqExpr(expr(pop(1)),expr(pop()))) ) ),
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98 Sequence( "<=", Spaces(), ConcatExpr(), push( new LeExpr(expr(pop(1)),expr(pop())) ) ),
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99 Sequence( ">=", Spaces(), ConcatExpr(), push( new LeExpr(expr(pop()),expr(pop())) ) ),
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100 Sequence( "<", Spaces(), ConcatExpr(), push( new LtExpr(expr(pop(1)),expr(pop())) ) ),
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101 Sequence( ">", Spaces(), ConcatExpr(), push( new LtExpr(expr(pop()),expr(pop())) ) )
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102 )
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103 )
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104 );
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105 }
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106
8
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107 Rule ConcatExpr() {
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108 return Sequence(
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109 SumExpr(),
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110 Optional( "..", Spaces(), ConcatExpr(), push( new ConcatExpr(expr(pop(1)),expr(pop())) ) )
8
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111 );
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112 }
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113
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114 Rule SumExpr() {
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115 return Sequence(
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116 TermExpr(),
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117 ZeroOrMore(
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118 FirstOf(
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119 Sequence( '+', Spaces(), TermExpr(), push( new AddExpr(expr(pop(1)),expr(pop())) ) ),
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120 Sequence( '-', Spaces(), TermExpr(), push( new SubExpr(expr(pop(1)),expr(pop())) ) )
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121 )
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122 )
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123 );
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124 }
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125
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126 Rule TermExpr() {
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127 return Sequence(
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128 UnaryExpr(),
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129 ZeroOrMore(
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130 FirstOf(
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131 Sequence( '*', Spaces(), UnaryExpr(), push( new MulExpr(expr(pop(1)),expr(pop())) ) ),
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132 Sequence( '/', Spaces(), UnaryExpr(), push( new DivExpr(expr(pop(1)),expr(pop())) ) ),
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133 Sequence( '%', Spaces(), UnaryExpr(), push( new ModExpr(expr(pop(1)),expr(pop())) ) )
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134 )
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135 )
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136 );
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137 }
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138
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139 Rule UnaryExpr() {
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140 return FirstOf(
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141 Sequence( '#', Spaces(), PowExpr(), push( new LenExpr(expr(pop())) ) ),
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142 Sequence( '-', Spaces(), PowExpr(), push( new UnmExpr(expr(pop())) ) ),
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143 Sequence( "not", Spaces(), PowExpr(), push( new NotExpr(expr(pop())) ) ),
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144 PowExpr()
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145 );
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146 }
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147
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148 Rule PowExpr() {
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149 return Sequence(
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150 SingleExpr(),
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151 Optional( '^', Spaces(), PowExpr(), push( new PowExpr(expr(pop(1)),expr(pop())) ) )
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152 );
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153 }
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154
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155 Rule SingleExpr() {
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156 return FirstOf(
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157 TableExpr(),
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158 VarExp(),
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159 LiteralExpr()
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160 );
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161 }
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162
9
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163 Rule TableExpr() {
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164 return Sequence(
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165 '{', Spaces(),
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166 push( new ArrayList<TableExpr.Field>() ),
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167 push( 1.0 ), // counter
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168 Optional(
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169 Field(),
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170 ZeroOrMore(
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171 FieldSep(),
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172 Field()
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173 ),
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174 Optional( FieldSep() )
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175 ),
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176 '}', Spaces(),
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177 push( newTableExpr() )
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178 );
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179 }
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180
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181 TableExpr newTableExpr() {
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182 pop(); // counter
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183 @SuppressWarnings("unchecked")
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184 List<TableExpr.Field> list = (List<TableExpr.Field>)pop();
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185 return new TableExpr(list.toArray(new TableExpr.Field[0]));
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186 }
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187
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188 Rule FieldSep() {
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189 return Sequence( AnyOf(",;"), Spaces() );
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190 }
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191
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192 Rule Field() {
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193 return FirstOf(
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194 Sequence(
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195 FirstOf( SubExpr(), Name() ),
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196 '=', Spaces(), Expr(),
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197 addField()
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198 ),
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199 Sequence(
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200 Expr(),
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201 addIndexedField()
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202 )
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203 );
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204 }
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205
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206 boolean addField() {
11
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207 TableExpr.Field field = new TableExpr.Field( expr(pop(1)), expr(pop()) );
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208 @SuppressWarnings("unchecked")
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209 List<TableExpr.Field> list = (List<TableExpr.Field>)peek(1);
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210 list.add(field);
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211 return true;
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212 }
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213
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214 boolean addIndexedField() {
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215 Expr val = expr(pop());
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216 double i = (Double)pop();
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217 TableExpr.Field field = new TableExpr.Field( new ConstExpr(new LuaNumber(i)), val );
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218 push( i + 1 );
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219 @SuppressWarnings("unchecked")
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220 List<TableExpr.Field> list = (List<TableExpr.Field>)peek(1);
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221 list.add(field);
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222 return true;
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223 }
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224
11
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225 static Expr expr(Object obj) {
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226 if( obj instanceof Expressions )
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227 return new ExpressionsExpr((Expressions)obj);
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228 return (Expr)obj;
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229 }
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230
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231 Rule VarExp() {
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232 return Sequence(
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233 Var(),
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234 makeVarExp()
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235 );
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236 }
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237
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238 Rule Var() {
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239 return Sequence(
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240 FirstOf(
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241 Sequence(
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242 '(', Spaces(), Expr(), ')', Spaces(),
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243 push(expr(pop())),
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244 push(null) // marker
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245 ),
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246 Sequence(
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247 push(EnvExpr.INSTANCE),
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248 Name()
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249 )
9
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250 ),
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251 ZeroOrMore(
11
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252 makeVarExp(),
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253 FirstOf(
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254 SubExpr(),
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255 Sequence( '.', Spaces(), Name() ),
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256 Sequence(
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257 Args(),
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258 push(null) // marker
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259 )
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260 )
9
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261 )
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diff changeset
262 );
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263 }
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264
11
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265 boolean makeVarExp() {
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266 Object obj = pop();
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267 if( obj==null )
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268 return true;
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269 return push( new GetExpr( expr(pop()), expr(obj) ) );
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270 }
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271
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272 // function should be on top of the stack
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273 Rule Args() {
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274 return Sequence(
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275 FirstOf(
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276 Sequence(
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277 '(', Spaces(), Expressions(), ')', Spaces()
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278 ),
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279 Sequence(
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280 TableExpr(),
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281 push( new ExpList.SingleExpList(expr(pop())) )
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282 ),
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283 Sequence(
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diff changeset
284 StringLiteral(), Spaces(),
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285 push( new ExpList.SingleExpList(new ConstExpr(pop())) )
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286 )
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diff changeset
287 ),
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288 push( new FnCall( expr(pop(1)), (Expressions)pop() ) )
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289 );
9
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290 }
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291
11
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diff changeset
292 Rule Expressions() {
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293 return FirstOf(
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294 ExpList(),
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295 push( ExpList.emptyExpList )
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296 );
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297 }
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diff changeset
298
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diff changeset
299 Rule ExpList() {
9
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300 return Sequence(
11
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301 push(new ExpList.Builder()),
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diff changeset
302 Expr(),
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303 addToExpList(),
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304 ZeroOrMore(
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diff changeset
305 ',', Spaces(), Expr(),
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306 addToExpList()
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diff changeset
307 ),
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diff changeset
308 push( ((ExpList.Builder)pop()).build() )
9
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diff changeset
309 );
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310 }
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parents: 8
diff changeset
311
11
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parents: 9
diff changeset
312 boolean addToExpList() {
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313 Object obj = pop();
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parents: 9
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314 ExpList.Builder bld = (ExpList.Builder)peek();
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parents: 9
diff changeset
315 if( obj instanceof Expressions ) {
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parents: 9
diff changeset
316 bld.add( (Expressions)obj );
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diff changeset
317 } else {
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diff changeset
318 bld.add( (Expr)obj );
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319 }
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diff changeset
320 return true;
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parents: 9
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321 }
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parents: 9
diff changeset
322
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 9
diff changeset
323 Rule SubExpr() {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 9
diff changeset
324 return Sequence( '[', Spaces(), Expr(), ']', Spaces() );
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parents: 9
diff changeset
325 }
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parents: 9
diff changeset
326
9
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parents: 8
diff changeset
327 Rule Name() {
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parents: 8
diff changeset
328 return Sequence(
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parents: 8
diff changeset
329 Sequence(
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parents: 8
diff changeset
330 NameStart(),
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 8
diff changeset
331 ZeroOrMore(
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 8
diff changeset
332 FirstOf( NameStart(), Digit() )
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parents: 8
diff changeset
333 )
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parents: 8
diff changeset
334 ),
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 8
diff changeset
335 push( new ConstExpr(match()) ),
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parents: 8
diff changeset
336 Spaces()
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parents: 8
diff changeset
337 );
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parents: 8
diff changeset
338 }
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parents: 8
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339
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parents: 8
diff changeset
340 Rule NameStart() {
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parents: 8
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341 return FirstOf(
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parents: 8
diff changeset
342 CharRange('a', 'z'),
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parents: 8
diff changeset
343 CharRange('A', 'Z'),
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parents: 8
diff changeset
344 '_'
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parents: 8
diff changeset
345 );
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parents: 8
diff changeset
346 }
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parents: 8
diff changeset
347
7
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parents: 6
diff changeset
348 Rule LiteralExpr() {
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parents: 6
diff changeset
349 return Sequence(
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parents: 6
diff changeset
350 Literal(), Spaces(),
5
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parents:
diff changeset
351 push(new ConstExpr(pop()))
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parents:
diff changeset
352 );
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parents:
diff changeset
353 }
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diff changeset
354
7
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 6
diff changeset
355 Rule Literal() {
5
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parents:
diff changeset
356 return FirstOf(
7
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parents: 6
diff changeset
357 NilLiteral(),
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 6
diff changeset
358 BooleanLiteral(),
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 6
diff changeset
359 NumberLiteral(),
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 6
diff changeset
360 StringLiteral()
5
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parents:
diff changeset
361 );
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diff changeset
362 }
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diff changeset
363
7
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 6
diff changeset
364 Rule NilLiteral() {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 6
diff changeset
365 return Sequence( "nil", push(null) );
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parents: 6
diff changeset
366 }
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parents: 6
diff changeset
367
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parents: 6
diff changeset
368 Rule BooleanLiteral() {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 6
diff changeset
369 return FirstOf(
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parents: 6
diff changeset
370 Sequence( "true", push(true) ),
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 6
diff changeset
371 Sequence( "false", push(false) )
5
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diff changeset
372 );
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diff changeset
373 }
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diff changeset
374
7
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parents: 6
diff changeset
375 Rule NumberLiteral() {
5
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parents:
diff changeset
376 return Sequence(
6
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diff changeset
377 Number(),
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diff changeset
378 push(new LuaNumber((Double)pop()))
5
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diff changeset
379 );
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diff changeset
380 }
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diff changeset
381
6
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diff changeset
382 Rule Number() {
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parents: 5
diff changeset
383 return FirstOf(
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parents: 5
diff changeset
384 Sequence(
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diff changeset
385 IgnoreCase("0x"),
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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diff changeset
386 OneOrMore(HexDigit()),
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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diff changeset
387 push((double)Long.parseLong(match(),16))
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diff changeset
388 ),
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diff changeset
389 Sequence(
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diff changeset
390 DecNumber(),
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 5
diff changeset
391 push(Double.parseDouble(match()))
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diff changeset
392 )
5
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diff changeset
393 );
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diff changeset
394 }
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diff changeset
395
6
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parents: 5
diff changeset
396 Rule DecNumber() {
5
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diff changeset
397 return FirstOf(
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parents:
diff changeset
398 Sequence(
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parents:
diff changeset
399 Int(),
7
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diff changeset
400 Optional( '.', Optional(Int()) ),
11
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parents: 9
diff changeset
401 Exponent()
5
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parents:
diff changeset
402 ),
11
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parents: 9
diff changeset
403 Sequence( '.', Int(), Exponent() )
5
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parents:
diff changeset
404 );
9ef0fd711101 start LuaParser
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parents:
diff changeset
405 }
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parents:
diff changeset
406
11
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parents: 9
diff changeset
407 Rule Exponent() {
5
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parents:
diff changeset
408 return Optional(
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
409 IgnoreCase('e'),
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
410 Optional(AnyOf("+-")),
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parents:
diff changeset
411 Int()
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parents:
diff changeset
412 );
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
413 }
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parents:
diff changeset
414
6
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parents: 5
diff changeset
415 Rule Int() {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 5
diff changeset
416 return OneOrMore(Digit());
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parents: 5
diff changeset
417 }
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parents: 5
diff changeset
418
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parents: 5
diff changeset
419 Rule HexDigit() {
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parents: 5
diff changeset
420 return FirstOf(
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parents: 5
diff changeset
421 Digit(),
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 5
diff changeset
422 AnyOf("abcdefABCDEF")
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 5
diff changeset
423 );
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 5
diff changeset
424 }
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 5
diff changeset
425
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 5
diff changeset
426 Rule Digit() {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 5
diff changeset
427 return CharRange('0', '9');
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 5
diff changeset
428 }
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 5
diff changeset
429
7
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 6
diff changeset
430 Rule StringLiteral() {
6
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 5
diff changeset
431 return FirstOf(
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 5
diff changeset
432 QuotedString('"'),
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 5
diff changeset
433 QuotedString('\'')
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 5
diff changeset
434 );
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 5
diff changeset
435 }
5
9ef0fd711101 start LuaParser
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
436
6
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 5
diff changeset
437 Rule QuotedString(char quote) {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 5
diff changeset
438 return Sequence(
7
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 6
diff changeset
439 quote,
6
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 5
diff changeset
440 push(new StringBuffer()),
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 5
diff changeset
441 ZeroOrMore(
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 5
diff changeset
442 FirstOf(
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 5
diff changeset
443 Sequence(
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 5
diff changeset
444 NoneOf("\\\n"+quote),
a315783c9524 more parsing
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 5
diff changeset
445 append(matchedChar())
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 5
diff changeset
446 ),
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 5
diff changeset
447 EscSeq()
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 5
diff changeset
448 )
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 5
diff changeset
449 ),
7
bca8fc5d928b work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 6
diff changeset
450 quote,
6
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 5
diff changeset
451 push(((StringBuffer)pop()).toString())
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 5
diff changeset
452 );
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 5
diff changeset
453 }
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 5
diff changeset
454
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 5
diff changeset
455 Rule EscSeq() {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 5
diff changeset
456 return Sequence(
7
bca8fc5d928b work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 6
diff changeset
457 '\\',
6
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 5
diff changeset
458 FirstOf(
7
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 6
diff changeset
459 Sequence( 'a', append('\u0007') ),
bca8fc5d928b work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 6
diff changeset
460 Sequence( 'b', append('\b') ),
bca8fc5d928b work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 6
diff changeset
461 Sequence( 'f', append('\f') ),
bca8fc5d928b work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 6
diff changeset
462 Sequence( 'n', append('\n') ),
bca8fc5d928b work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 6
diff changeset
463 Sequence( 'r', append('\r') ),
bca8fc5d928b work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 6
diff changeset
464 Sequence( 't', append('\t') ),
bca8fc5d928b work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 6
diff changeset
465 Sequence( 'v', append('\u000b') ),
bca8fc5d928b work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 6
diff changeset
466 Sequence( '\\', append('\\') ),
bca8fc5d928b work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 6
diff changeset
467 Sequence( '"', append('"') ),
bca8fc5d928b work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 6
diff changeset
468 Sequence( '\'', append('\'') ),
bca8fc5d928b work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 6
diff changeset
469 Sequence(
bca8fc5d928b work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 6
diff changeset
470 'x',
bca8fc5d928b work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 6
diff changeset
471 Sequence( HexDigit(), HexDigit() ),
bca8fc5d928b work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 6
diff changeset
472 append( (char)Integer.parseInt(match(),16) )
bca8fc5d928b work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 6
diff changeset
473 ),
bca8fc5d928b work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 6
diff changeset
474 Sequence(
bca8fc5d928b work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 6
diff changeset
475 Sequence(
bca8fc5d928b work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 6
diff changeset
476 Digit(),
bca8fc5d928b work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 6
diff changeset
477 Optional(
bca8fc5d928b work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 6
diff changeset
478 Digit(),
bca8fc5d928b work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 6
diff changeset
479 Optional(
bca8fc5d928b work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 6
diff changeset
480 Digit()
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 6
diff changeset
481 )
bca8fc5d928b work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 6
diff changeset
482 )
bca8fc5d928b work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 6
diff changeset
483 ),
bca8fc5d928b work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 6
diff changeset
484 append( (char)Integer.parseInt(match()) )
bca8fc5d928b work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 6
diff changeset
485 )
6
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 5
diff changeset
486 )
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 5
diff changeset
487 );
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 5
diff changeset
488 }
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 5
diff changeset
489
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 5
diff changeset
490 boolean append(char ch) {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 5
diff changeset
491 StringBuffer sb = (StringBuffer)peek();
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 5
diff changeset
492 sb.append(ch);
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 5
diff changeset
493 return true;
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parents: 5
diff changeset
494 }
5
9ef0fd711101 start LuaParser
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
495
7
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 6
diff changeset
496 public Rule Spaces() {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 6
diff changeset
497 return ZeroOrMore(AnyOf(" \t"));
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 6
diff changeset
498 }
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 6
diff changeset
499
5
9ef0fd711101 start LuaParser
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
500 // for testing
9ef0fd711101 start LuaParser
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
501 public static void main(String[] args) throws Exception {
9ef0fd711101 start LuaParser
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
502 LuaParser parser = Parboiled.createParser(LuaParser.class);
9ef0fd711101 start LuaParser
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
503 while( true ) {
6
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 5
diff changeset
504 String input = new Scanner(System.in).nextLine();
5
9ef0fd711101 start LuaParser
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
505 ParsingResult<?> result = new ReportingParseRunner(parser.Target()).run(input);
9ef0fd711101 start LuaParser
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
506 if( result.hasErrors() ) {
9ef0fd711101 start LuaParser
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
507 System.out.println("Parse Errors:\n" + ErrorUtils.printParseErrors(result));
9ef0fd711101 start LuaParser
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
508 } else {
11
b7d7069fee58 add assignment statement and CmdLine
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 9
diff changeset
509 Expr expr = expr(result.resultValue);
5
9ef0fd711101 start LuaParser
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
510 LuaState lua = new LuaState();
9ef0fd711101 start LuaParser
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
511 Object val = expr.eval(lua);
9ef0fd711101 start LuaParser
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
512 System.out.println("Result: "+Lua.toString(val));
9ef0fd711101 start LuaParser
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
513 }
9ef0fd711101 start LuaParser
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
514 }
9ef0fd711101 start LuaParser
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
515 }
9ef0fd711101 start LuaParser
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
516 }