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view core/src/luan/impl/FnCall.java @ 650:d658eab7bf4c
finish compiling operators
author | Franklin Schmidt <fschmidt@gmail.com> |
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date | Thu, 31 Mar 2016 22:43:51 -0600 |
parents | 37f0cf43f191 |
children |
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package luan.impl; import luan.Luan; import luan.LuanFunction; import luan.LuanException; import luan.LuanTable; final class FnCall extends CodeImpl implements StmtExp { final Expr fnExpr; final Expressions args; FnCall(Expr fnExpr,Expressions args) { this.fnExpr = fnExpr; this.args = args; } @Override public Object eval(LuanStateImpl luan) throws LuanException { return call( luan, fnExpr.eval(luan), Luan.array(args.eval(luan)) ); } private Object call(LuanStateImpl luan,Object o,Object[] argVals) throws LuanException { if( o instanceof LuanFunction ) { LuanFunction fn = (LuanFunction)o; return fn.call( luan, argVals ); } if( o instanceof LuanTable ) { LuanTable t = (LuanTable)o; Object h = t.getHandler("__call"); if( h != null ) return call(luan,h,argVals); } throw new LuanException( "attempt to call a " + Luan.type(o) + " value" ); } @Override public String toString() { return "(FnCall "+fnExpr+" "+args+")"; } }