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comparison src/luan/interp/BinaryOpExpr.java @ 37:8a57ebfdfd78

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add JavaLib git-svn-id: https://luan-java.googlecode.com/svn/trunk@38 21e917c8-12df-6dd8-5cb6-c86387c605b9
author fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
date Thu, 20 Dec 2012 02:36:07 +0000
parents 2a35154aec14
children e3624b7cd603
comparison
equal deleted inserted replaced
36:2a35154aec14 37:8a57ebfdfd78
13 BinaryOpExpr(Expr op1,Expr op2) { 13 BinaryOpExpr(Expr op1,Expr op2) {
14 this.op1 = op1; 14 this.op1 = op1;
15 this.op2 = op2; 15 this.op2 = op2;
16 } 16 }
17 17
18 static final LuaFunction getBinHandler(String op,Object o1,Object o2) throws LuaException {
19 LuaFunction f1 = Utils.getHandlerFunction(op,o1);
20 if( f1 != null )
21 return f1;
22 return Utils.getHandlerFunction(op,o2);
23 }
24
25 static final Object arithmetic(LuaStateImpl lua,String op,Object o1,Object o2) throws LuaException {
26 LuaFunction fn = getBinHandler(op,o1,o2);
27 if( fn != null )
28 return Utils.first(fn.call(lua,o1,o2));
29 String type = Lua.toNumber(o1)==null ? Lua.type(o1) : Lua.type(o2);
30 throw new LuaException("attempt to perform arithmetic on a "+type+" value");
31 }
32 } 18 }