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view core/src/luan/impl/ReturnStmt.java @ 331:0fe17503f094
add release-luan.sh
author | Franklin Schmidt <fschmidt@gmail.com> |
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date | Mon, 23 Mar 2015 23:36:31 -0600 |
parents | 7580379cdc79 |
children | b48cfa14ba60 |
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package luan.impl; import luan.Luan; import luan.LuanException; import luan.LuanFunction; import luan.LuanSource; final class ReturnStmt extends CodeImpl implements Stmt { private final Expressions expressions; private final Expr tailFnExpr; boolean throwReturnException = true; ReturnStmt(LuanSource.Element se,Expressions expressions) { super(se); if( expressions instanceof FnCall ) { // tail call FnCall fnCall = (FnCall)expressions; this.expressions = fnCall.args; this.tailFnExpr = fnCall.fnExpr; } else { this.expressions = expressions; this.tailFnExpr = null; } } @Override public void eval(LuanStateImpl luan) throws LuanException { luan.returnValues = expressions.eval(luan); if( tailFnExpr != null ) { LuanSource.Element seTail = tailFnExpr.se(); LuanFunction tailFn = luan.bit(seTail).checkFunction( tailFnExpr.eval(luan) ); if( tailFn instanceof Closure ) { luan.tailFn = (Closure)tailFn; } else { luan.returnValues = luan.bit(seTail).call(tailFn,seTail.text(),Luan.array(luan.returnValues)); } } if( throwReturnException ) throw new ReturnException(); } }