protected override Expression VisitHelperExpression(HelperExpression hex)
{
if (_context.Configuration.Helpers.ContainsKey(hex.HelperName))
{
var helper = _context.Configuration.Helpers[hex.HelperName];
var arguments = new Expression[] {
Expression.Property(
_context.BindingContext,
typeof(BindingContext).GetProperty("TextWriter")),
Expression.Property(
_context.BindingContext,
typeof(BindingContext).GetProperty("Value")),
Expression.NewArrayInit(typeof(object), hex.Arguments)
};
if(helper.Target != null)
{
return Expression.Call(
Expression.Constant(helper.Target),
helper.Method,
arguments);
}
else
{
return Expression.Call(
helper.Method,
arguments);
}
}
else
{
return hex;
}
}
protected override Expression VisitHelperExpression(HelperExpression hex)
{
if (_context.Configuration.Helpers.ContainsKey(hex.HelperName))
{
var helper = _context.Configuration.Helpers[hex.HelperName];
var arguments = new Expression[] {
Expression.Property(
_context.BindingContext,
typeof(BindingContext).GetProperty("TextWriter")),
Expression.Property(
_context.BindingContext,
typeof(BindingContext).GetProperty("Value")),
Expression.NewArrayInit(typeof(object), hex.Arguments)
};
if (helper.Target != null)
{
return(Expression.Call(
Expression.Constant(helper.Target),
helper.Method,
arguments));
}
else
{
return(Expression.Call(
helper.Method,
arguments));
}
}
else
{
return(hex);
}
}
private static Expression CreateIfBlock(HelperExpression startingNode, IEnumerable<Expression> body)
{
var condition = HandlebarsExpression.Boolish(startingNode.Arguments.Single());
if(startingNode.HelperName == "#if")
{
return Expression.IfThen(condition, Expression.Block(body));
}
else if(startingNode.HelperName == "#unless")
{
return Expression.IfThen(Expression.Not(condition), Expression.Block(body));
}
else
{
throw new HandlebarsCompilerException(string.Format(
"Tried to create a conditional expression for '{0}'", startingNode.HelperName));
}
}
private static Expression CreateIfBlock(HelperExpression startingNode, IEnumerable <Expression> body)
{
var condition = HandlebarsExpression.Boolish(startingNode.Arguments.Single());
if (startingNode.HelperName == "#if")
{
return(Expression.IfThen(condition, Expression.Block(body)));
}
else if (startingNode.HelperName == "#unless")
{
return(Expression.IfThen(Expression.Not(condition), Expression.Block(body)));
}
else
{
throw new HandlebarsCompilerException(string.Format(
"Tried to create a conditional expression for '{0}'", startingNode.HelperName));
}
}
public BlockHelperAccumulatorContext(Expression startingNode)
: base(startingNode)
{
startingNode = UnwrapStatement(startingNode);
_startingNode = (HelperExpression)startingNode;
}
protected override Expression VisitHelperExpression(HelperExpression hex)
{
return(HandlebarsExpression.Helper(
hex.HelperName,
hex.Arguments.Select(arg => Visit(arg))));
}
public BlockHelperAccumulatorContext(Expression startingNode)
: base(startingNode)
{
startingNode = UnwrapStatement(startingNode);
_startingNode = (HelperExpression)startingNode;
}
protected virtual Expression VisitHelperExpression(HelperExpression hex)
{
return hex;
}
protected virtual Expression VisitHelperExpression(HelperExpression hex)
{
return(hex);
}
protected override Expression VisitHelperExpression(HelperExpression hex)
{
return HandlebarsExpression.Helper(
hex.HelperName,
hex.Arguments.Select(arg => Visit(arg)));
}