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comparison src/luan/interp/UnmExpr.java @ 36:2a35154aec14

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implement more basic lib functions git-svn-id: https://luan-java.googlecode.com/svn/trunk@37 21e917c8-12df-6dd8-5cb6-c86387c605b9
author fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
date Tue, 18 Dec 2012 09:53:42 +0000
parents e51906de0f11
children 8a57ebfdfd78
comparison
equal deleted inserted replaced
35:e51906de0f11 36:2a35154aec14
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.getHandler("__unm",o); 21 LuaFunction fn = Utils.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 }