private static Action <StringBuilder, ContextObject> HandleSingleValue(TokenTuple token, ParsingOptions options, InferredTemplateModel scope)
{
if (scope != null)
{
scope = scope.GetInferredModelForPath(token.Value, InferredTemplateModel.UsedAs.Scalar);
}
return((builder, context) =>
{
if (context != null)
{
//try to locate the value in the context, if it exists, append it.
var c = context.GetContextForPath(token.Value);
if (c.Value != null)
{
if (token.Type == TokenType.EscapedSingleValue && !options.DisableContentSafety)
{
builder.Append(HtmlEncodeString(c.ToString()));
}
else
{
builder.Append(c);
}
}
}
});
}
private static Action <StringBuilder, ContextObject> HandleElementOpen(TokenTuple token, Queue <TokenTuple> remainder, ParsingOptions options, InferredTemplateModel scope)
{
if (scope != null)
{
scope = scope.GetInferredModelForPath(token.Value, InferredTemplateModel.UsedAs.ConditionalValue);
}
var innerTemplate = Parse(remainder, options, scope);
return((builder, context) =>
{
var c = context.GetContextForPath(token.Value);
//"falsey" values by Javascript standards...
if (c.Exists())
{
innerTemplate(builder, c);
}
});
}
private static Action <StringBuilder, ContextObject> HandleCollectionOpen(TokenTuple token, Queue <TokenTuple> remainder, ParsingOptions options, InferredTemplateModel scope)
{
if (scope != null)
{
scope = scope.GetInferredModelForPath(token.Value, InferredTemplateModel.UsedAs.Collection);
}
var innerTemplate = Parse(remainder, options, scope);
return((builder, context) =>
{
//if we're in the same scope, just negating, then we want to use the same object
var c = context.GetContextForPath(token.Value);
//"falsey" values by Javascript standards...
if (!c.Exists())
{
return;
}
if (c.Value is IEnumerable && !(c.Value is String) && !(c.Value is IDictionary <string, object>))
{
var index = 0;
foreach (object i in c.Value as IEnumerable)
{
var innerContext = new ContextObject()
{
Value = i,
Key = String.Format("[{0}]", index),
Parent = c
};
innerTemplate(builder, innerContext);
index++;
}
}
else
{
throw new IndexedParseException("'{0}' is used like an array by the template, but is a scalar value or object in your model.", token.Value);
}
});
}