private static Action <StreamWriter, ContextObject> HandleCollectionOpen(TokenPair token, Queue <TokenPair> remainder,
ParserOptions options, InferredTemplateModel scope)
{
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 enumerable && !(enumerable is string) && !(enumerable is IDictionary <string, object>))
{
var index = 0;
var enumerator = enumerable.GetEnumerator();
if (enumerator.MoveNext())
{
var current = enumerator.Current;
object next;
do
{
if (enumerator.MoveNext())
{
next = enumerator.Current;
}
else
{
next = null;
}
var innerContext = new ContextCollection(index, next == null)
{
Value = current,
Key = string.Format("[{0}]", index),
Options = options,
Parent = c
};
innerTemplate(builder, innerContext);
index++;
current = next;
} while (current != null);
}
}
private static Action <StreamWriter, ContextObject> HandleFormattingValue(
TokenPair currentToken,
ParserOptions options,
InferredTemplateModel scope)
{
return((builder, context) =>
{
scope = scope?.GetInferredModelForPath(currentToken.Value, InferredTemplateModel.UsedAs.Scalar);
if (context == null)
{
return;
}
var c = context.GetContextForPath(currentToken.Value, true);
context.FormattingValue = c.Format(currentToken.FormatAs, c.Value);
});
}
private static Action <StreamWriter, ContextObject> PrintFormattedValues(
TokenPair currentToken,
ParserOptions options,
InferredTemplateModel currentScope)
{
return((builder, context) =>
{
if (context == null)
{
return;
}
string value = null;
if (context.FormattingValue != null)
{
value = context.FormattingValue.ToString();
context.FormattingValue = null;
}
HandleContent(value)(builder, context);
});
}
private static Action <StreamWriter, ContextObject> HandleSingleValue(TokenPair token, ParserOptions options,
InferredTemplateModel scope)
{
scope = scope?.GetInferredModelForPath(token.Value, InferredTemplateModel.UsedAs.Scalar);
return((builder, context) =>
{
//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.DisableContentEscaping)
{
HandleContent(RtfEncodeString(c.ToString(), options))(builder, c);
}
else
{
HandleContent(c.ToString())(builder, c);
}
}
});
}
private static Action <StreamWriter, ContextObject> HandleInvertedElementOpen(TokenPair token,
Queue <TokenPair> remainder,
ParserOptions options, InferredTemplateModel scope)
{
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);
}
});
}
