public static Expression Extract(SyntaxContext context, Expression expression)
{
if (expression.isFinally)
{
return(expression);
}
expression.Extract(context);
if (context.isCutting)
{
context.isCutting = false;
return(context.cuttingExp);
}
else if (expression.isBinder)
{
return(expression);
}
else
{
var ret = Wrapper(expression, context.NewUID());
context.Add(ret.Value);
if (expression.type == Expression.Type.Call)
{
return(new UnpackExpression(ret.Key));
}
else
{
return(ret.Key);
}
}
}
public override void Extract(SyntaxContext context)
{
item1Exp = ParserHelper.Extract(context, item1Exp);
var itemKey = context.NewUID();
var step1Item = ParserHelper.Wrapper(item1Exp, itemKey);
var step2Item = ParserHelper.Wrapper(item2Exp, itemKey);
var condExp = new IfElseExpression(item1Exp, step2Item.Value, step1Item.Value);
context.Add(condExp);
context.isCutting = true;
context.cuttingExp = step1Item.Key;
}
