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comparison src/luan/interp/UnmExpr.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
16 @Override public Object eval(LuaStateImpl lua) throws LuaException { 16 @Override public Object eval(LuaStateImpl lua) throws LuaException {
17 Object o = op.eval(lua); 17 Object o = op.eval(lua);
18 LuaNumber n = Lua.toNumber(o); 18 LuaNumber n = Lua.toNumber(o);
19 if( n != null ) 19 if( n != null )
20 return new LuaNumber( -n.value() ); 20 return new LuaNumber( -n.value() );
21 LuaFunction fn = Utils.getHandlerFunction("__unm",o); 21 LuaFunction fn = lua.getHandlerFunction("__unm",o);
22 if( fn != null ) 22 if( fn != null )
23 return Utils.first(fn.call(lua,o)); 23 return Utils.first(fn.call(lua,o));
24 throw new LuaException("attempt to perform arithmetic on a "+Lua.type(o)+" value"); 24 throw new LuaException("attempt to perform arithmetic on a "+Lua.type(o)+" value");
25 } 25 }
26 } 26 }