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comparison src/luan/interp/SubExpr.java @ 40:e3624b7cd603

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implement stack trace git-svn-id: https://luan-java.googlecode.com/svn/trunk@41 21e917c8-12df-6dd8-5cb6-c86387c605b9
author fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
date Fri, 21 Dec 2012 10:45:54 +0000
parents 8a57ebfdfd78
children 57054fa43189
comparison
equal deleted inserted replaced
39:e5bcb1eeafc1 40:e3624b7cd603
1 package luan.interp; 1 package luan.interp;
2 2
3 import luan.Lua; 3 import luan.Lua;
4 import luan.LuaNumber; 4 import luan.LuaNumber;
5 import luan.LuaException; 5 import luan.LuaException;
6 import luan.LuaSource;
6 7
7 8
8 final class SubExpr extends BinaryOpExpr { 9 final class SubExpr extends BinaryOpExpr {
9 10
10 SubExpr(Expr op1,Expr op2) { 11 SubExpr(LuaSource.Element se,Expr op1,Expr op2) {
11 super(op1,op2); 12 super(se,op1,op2);
12 } 13 }
13 14
14 @Override public Object eval(LuaStateImpl lua) throws LuaException { 15 @Override public Object eval(LuaStateImpl lua) throws LuaException {
15 Object o1 = op1.eval(lua); 16 Object o1 = op1.eval(lua);
16 Object o2 = op2.eval(lua); 17 Object o2 = op2.eval(lua);
17 LuaNumber n1 = Lua.toNumber(o1); 18 LuaNumber n1 = Lua.toNumber(o1);
18 LuaNumber n2 = Lua.toNumber(o2); 19 LuaNumber n2 = Lua.toNumber(o2);
19 if( n1 != null && n2 != null ) 20 if( n1 != null && n2 != null )
20 return new LuaNumber( n1.value() - n2.value() ); 21 return new LuaNumber( n1.value() - n2.value() );
21 return lua.arithmetic("__sub",o1,o2); 22 return arithmetic(lua,"__sub",o1,o2);
22 } 23 }
23 } 24 }