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view core/src/luan/impl/FnDef.java @ 195:24ede40ee0aa
make MetatableGetter DeepCloneable, scoped, and secure
git-svn-id: https://luan-java.googlecode.com/svn/trunk@196 21e917c8-12df-6dd8-5cb6-c86387c605b9
author | fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9> |
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date | Thu, 03 Jul 2014 08:19:48 +0000 |
parents | 3dcb0f9bee82 |
children | 5ba136769034 |
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package luan.impl; import luan.LuanException; import luan.LuanSource; final class FnDef extends CodeImpl implements Expr { final Stmt block; final int stackSize; final int numArgs; final boolean isVarArg; final UpValue.Getter[] upValueGetters; FnDef(LuanSource.Element se,Stmt block,int stackSize,int numArgs,boolean isVarArg,UpValue.Getter[] upValueGetters) { super(se); this.block = block; this.stackSize = stackSize; this.numArgs = numArgs; this.isVarArg = isVarArg; this.upValueGetters = upValueGetters; fixReturns(block); } private static void fixReturns(Stmt stmt) { if( stmt instanceof ReturnStmt ) { ReturnStmt rs = (ReturnStmt)stmt; rs.throwReturnException = false; } else if( stmt instanceof Block ) { Block b = (Block)stmt; fixReturns( b.stmts[b.stmts.length-1] ); } else if( stmt instanceof IfStmt ) { IfStmt is = (IfStmt)stmt; fixReturns( is.thenStmt ); fixReturns( is.elseStmt ); } } @Override public Object eval(LuanStateImpl luan) throws LuanException { return new Closure(luan,this,luan.mtGetterLink()); } }