public override void Visit(CatchClause node)
{
VisitNode(node.Statement);
Visit((Node)node);
}
public override void Visit(CatchClause node)
{
_ilGen.BeginCatchBlock(Types.JSException.TypeOf);
_labelInfos.PushProtectedRegion(node);
///At this point, the exception object is on the stack, however, the JSException is not a DObject
///that we can work with. So, we immediately load its .Value and use that one
_ilGen.Ldflda(Types.JSException.Value);
DeclareSymbols(node.Scope);
var symbol = node.Identifier.Symbol;
Debug.Assert(symbol != null, new JSSourceLocation(_currFuncMetadata, node.Statement), string.Format("Cannot find symbol for identifier {0} in catch clause", node.Identifier));
///It is important not to use symbol.Name since this is effectively a new scropt and there might be some other name clash!
///For example in the following case
///try { ... } catch(e) { try { ... } catch(e) { ... } }
///our current implementation is wrong specially if the catch identifier is closed on. But for now, we use a simple implementation
///for a good complicated example, see Tests/TryCatch9.js
var local = _localVars.Get(symbol);
Debug.Assert(local != null && local.LocalType == Types.DValue.TypeOf, "catch symbol must have a variable of type {0}", Types.DValue.TypeOf);
//if (local == null)
// local = _localVars.Declare(_localVars.Declare(Types.DValue.RefOf), symbol);
//_ilGen.Stloc(local);
_ilGen.Ldloca(local);
_ilGen.Call(Types.Operations.Assign.Get(mdr.ValueTypes.DValueRef));
VisitNode(node.Statement);
//_localVars.Release(symbol);
_labelInfos.PopProtectedRegion(node);
}
public override void Visit(CatchClause node) { Visit((Node)node); }
public override void Visit(CatchClause node)
{
Visit((Node)node);
}
public abstract void Visit(CatchClause node);
public override void Visit(CatchClause node)
{
_ilGen.BeginCatchBlock(Types.JSException.TypeOf);
_labelInfos.PushProtectedRegion(node);
StoreStackSp(0); //Empty the stack
//At this point, the exception object is on the stack
_ilGen.Ldflda(Types.JSException.Value);
Call(Types.Operations.Stack.LoadDValue, 0, 1);
var symbol = node.Identifier.Symbol;// _currFuncMetadata.GetSymbol(expression.Catch.Identifier);
Debug.Assert(symbol != null, new JSSourceLocation(_currFuncMetadata, node.Statement), string.Format("Cannot find symbol for identifier {0} in catch clause", node.Identifier));
WriteResults(symbol, false);
VisitNode(node.Statement);
_labelInfos.PopProtectedRegion(node);
}
public override void Visit(CatchClause node)
{
throw new NotImplementedException();
}