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view src/luan/interp/FnCall.java @ 36:2a35154aec14
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> |
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date | Tue, 18 Dec 2012 09:53:42 +0000 |
parents | e51906de0f11 |
children | 8a57ebfdfd78 |
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package luan.interp; import luan.Lua; import luan.LuaFunction; import luan.LuaException; final class FnCall implements Expressions { final Expr fnExpr; final Expressions args; FnCall(Expr fnExpr,Expressions args) { this.fnExpr = fnExpr; this.args = args; } @Override public Object[] eval(LuaStateImpl lua) throws LuaException { return call( lua, fnExpr.eval(lua) ); } private Object[] call(LuaStateImpl lua,Object o) throws LuaException { if( o instanceof LuaFunction ) { LuaFunction fn = (LuaFunction)o; return fn.call( lua, args.eval(lua) ); } Object h = Utils.getHandler("__call",o); if( h != null ) return call(lua,h); throw new LuaException( "attempt to call a " + Lua.type(o) + " value" ); } }