|
public static Iterator ( |
||
| sequence | ||
| template | ||
| return | HandlebarsDotNet.Compiler.IteratorExpression | |
public override bool IsClosingElement(Expression item)
{
if (IsClosingNode(item))
{
// If the template has no content within the block, e.g. `{{#each ...}}{{/each}`, then the block body is a no-op.
var bodyStatements = _body.Count != 0 ? _body : new List <Expression> {
Expression.Empty()
};
if (_accumulatedExpression == null)
{
_accumulatedExpression = HandlebarsExpression.Iterator(
_startingNode.Arguments.Single(),
Expression.Block(bodyStatements));
}
else
{
_accumulatedExpression = HandlebarsExpression.Iterator(
((IteratorExpression)_accumulatedExpression).Sequence,
((IteratorExpression)_accumulatedExpression).Template,
Expression.Block(bodyStatements));
}
return(true);
}
else
{
return(false);
}
}
protected virtual Expression VisitIteratorExpression(IteratorExpression iex)
{
Expression sequence = Visit(iex.Sequence);
// Don't visit Template/IfEmpty - they will be compiled separately
if (sequence != iex.Sequence)
{
return(HandlebarsExpression.Iterator(sequence, iex.BlockParams, iex.Template, iex.IfEmpty));
}
return(iex);
}
public override void HandleElement(Expression item)
{
if (IsElseBlock(item))
{
_accumulatedExpression = HandlebarsExpression.Iterator(
_startingNode.Arguments.Single(),
Expression.Block(_body));
_body = new List <Expression>();
}
else
{
_body.Add((Expression)item);
}
}
public override void HandleElement(Expression item)
{
if (IsElseBlock(item))
{
_accumulatedExpression = HandlebarsExpression.Iterator(
_startingNode.Arguments.Single(o => o.NodeType != (ExpressionType)HandlebarsExpressionType.BlockParamsExpression),
_startingNode.Arguments.OfType <BlockParamsExpression>().SingleOrDefault() ?? BlockParamsExpression.Empty(),
Expression.Block(_body));
_body = new List <Expression>();
}
else
{
_body.Add((Expression)item);
}
}
public override bool IsClosingElement(Expression item)
{
if (IsClosingNode(item))
{
if (_accumulatedExpression == null)
{
_accumulatedExpression = HandlebarsExpression.Iterator(
_startingNode.Arguments.Single(),
Expression.Block(_body));
}
else
{
_accumulatedExpression = HandlebarsExpression.Iterator(
((IteratorExpression)_accumulatedExpression).Sequence,
((IteratorExpression)_accumulatedExpression).Template,
Expression.Block(_body));
}
return(true);
}
else
{
return(false);
}
}