/// <inheritdoc />
public void WriteXml(XmlWriter writer)
{
writer.WriteAttributeString(nameof(Location), Location.ToFormatString());
if (FormatterName != null)
{
writer.WriteAttributeString(nameof(FormatterName), FormatterName);
}
if (PathParts.Any())
{
var pathStr = string.Join(",", PathParts.Select(f =>
{
if (f.Key != null)
{
return("{" + f.Value + ";" + f.Key + "}");
}
return("{" + f.Value + "}");
}));
writer.WriteAttributeString(nameof(PathParts), pathStr);
}
foreach (var expressionArgument in Formats)
{
writer.WriteStartElement("Format");
expressionArgument.WriteXml(writer);
writer.WriteEndElement(); //</Format>
}
}
/// <inheritdoc />
public void WriteXml(XmlWriter writer)
{
writer.WriteAttributeString(nameof(Location), Location.ToFormatString());
if (EndsWithDelimiter)
{
writer.WriteAttributeString(nameof(EndsWithDelimiter), bool.TrueString);
}
if (PathParts.Any())
{
writer.WriteStartElement("Path");
foreach (var pathPart in PathParts.ToArray())
{
writer.WriteElementString(pathPart.Value.ToString(), pathPart.Key);
}
writer.WriteEndElement(); //</Path>
}
if (FormatterName != null)
{
writer.WriteStartElement("Format");
writer.WriteAttributeString(nameof(FormatterName), FormatterName);
foreach (var expressionArgument in Formats)
{
writer.WriteStartElement("Argument");
expressionArgument.WriteXml(writer);
writer.WriteEndElement(); //</Argument>
}
writer.WriteEndElement(); //</Format>
}
}
private bool ComputeCurrentPart(TokenzierContext context, int index)
{
var checkPathPart = CheckPathPart();
if (checkPathPart != -1)
{
context.Errors.Add(
new InvalidPathSyntaxError(context.CurrentLocation.Offset(index)
.AddWindow(new CharacterSnippedLocation(1, checkPathPart, CurrentPart)),
CurrentPart));
return(false);
}
if (CurrentPart == "null")
{
if (PathParts.Any())
{
context.Errors.Add(
new InvalidPathSyntaxError(context.CurrentLocation.Offset(index)
.AddWindow(new CharacterSnippedLocation(1, index, CurrentPart)),
CurrentPart,
"An null must be at the start of an expression"));
return(false);
}
PathParts.Add(new KeyValuePair <string, PathType>(null, PathType.Null));
}
else if (CurrentPart == "true" || CurrentPart == "false")
{
if (PathParts.Any())
{
context.Errors.Add(
new InvalidPathSyntaxError(context.CurrentLocation.Offset(index)
.AddWindow(new CharacterSnippedLocation(1, index, CurrentPart)),
CurrentPart,
"An boolean must be at the start of an expression"));
return(false);
}
PathParts.Add(new KeyValuePair <string, PathType>(CurrentPart, PathType.Boolean));
}
else
{
PathParts.Add(new KeyValuePair <string, PathType>(CurrentPart, PathType.DataPath));
}
return(true);
}
/// <inheritdoc />
public async ContextObjectPromise GetValue(ContextObject contextObject, ScopeData scopeData)
{
if (!PathParts.Any() && Formats.Count == 1 && FormatterName == "")
{
//indicates the usage of brackets
return(await Formats[0].GetValue(contextObject, scopeData));
}
var contextForPath = contextObject.GetContextForPath(PathParts, scopeData, this);
if (!Formats.Any() && FormatterName == null)
{
return(contextForPath);
}
if (contextForPath == contextObject)
{
contextForPath = contextObject.CloneForEdit();
}
var arguments = new FormatterArgumentType[Formats.Count];
var naturalValue = contextObject.FindNextNaturalContextObject();
for (var index = 0; index < Formats.Count; index++)
{
var formatterArgument = Formats[index];
var value = await formatterArgument.MorestachioExpression.GetValue(naturalValue, scopeData);
arguments[index] = new FormatterArgumentType(index, formatterArgument.Name, value?.Value);
}
//contextForPath.Value = await contextForPath.Format(FormatterName, argList, scopeData);
if (Cache == null)
{
Cache = contextForPath.PrepareFormatterCall(
contextForPath.Value?.GetType() ?? typeof(object),
FormatterName,
arguments,
scopeData);
}
if (Cache != null /* && !Equals(Cache.Value, default(FormatterCache))*/)
{
contextForPath.Value = await scopeData.ParserOptions.Formatters.Execute(Cache, contextForPath.Value, scopeData.ParserOptions, arguments);
contextForPath.MakeSyntetic();
}
return(contextForPath);
}
public bool Add(char c, TokenzierContext context, int index)
{
if (!Tokenizer.IsExpressionChar(c))
{
context.Errors.Add(
new InvalidPathSyntaxError(context.CurrentLocation.Offset(index)
.AddWindow(new CharacterSnippedLocation(1, index, CurrentPart)),
CurrentPart));
return(false);
}
if (PathParts.Any(f => f.Value == PathType.Null))
{
context.Errors.Add(
new InvalidPathSyntaxError(context.CurrentLocation.Offset(index)
.AddWindow(new CharacterSnippedLocation(1, index, CurrentPart)),
CurrentPart,
"Nothing can follow on a null"));
}
LastCharWasDelimiter = c == '.';
if (c == '/')
{
if (CurrentPart == "..")
{
if (PathParts.Any() && PathParts.Any(e => e.Value != PathType.ParentSelector))
{
context.Errors.Add(
new InvalidPathSyntaxError(context.CurrentLocation.Offset(index)
.AddWindow(new CharacterSnippedLocation(1, index, CurrentPart)),
CurrentPart,
"An Parent selector '..\\' can only follow on another parent selector like and never on an root or an data selector"));
return(false);
}
PathParts.Add(new KeyValuePair <string, PathType>(null, PathType.ParentSelector));
CurrentPart = "";
return(true);
}
context.Errors.Add(
new InvalidPathSyntaxError(context.CurrentLocation.Offset(index)
.AddWindow(new CharacterSnippedLocation(1, index, CurrentPart)),
CurrentPart,
"Unexpected '/'. Expected ether the start of an expression or an './'"));
return(false);
}
if (c == '~')
{
if (CurrentPart != string.Empty || PathParts.Any())
{
context.Errors.Add(
new InvalidPathSyntaxError(context.CurrentLocation.Offset(index)
.AddWindow(new CharacterSnippedLocation(1, index, CurrentPart)),
CurrentPart,
"An root selector '~' must be at the start of an expression"));
return(false);
}
PathParts.Add(new KeyValuePair <string, PathType>(null, PathType.RootSelector));
CurrentPart = "";
return(true);
}
if (c == '?')
{
PathParts.Add(new KeyValuePair <string, PathType>(null, PathType.ObjectSelector));
CurrentPart = "";
return(true);
}
if (c != '.' && CurrentPart == "." && PathParts.Count == 0)
{
//in this case somebody wrote .data
//so ignore the dot
CurrentPart = "";
}
if (CurrentPart != "" && CurrentPart != "." && c == '.')
{
if (CurrentPartIsNumber)
{
if (CurrentPart.Contains("."))
{
PathParts.Add(new KeyValuePair <string, PathType>(CurrentPart, PathType.Number));
CurrentPart = "";
}
else
{
CurrentPart += c;
}
return(true);
}
if (!ComputeCurrentPart(context, index))
{
return(false);
}
CurrentPart = "";
}
else
{
if (CurrentPart == string.Empty && char.IsDigit(c))
{
CurrentPartIsNumber = true;
if (PathParts.Any())
{
context.Errors.Add(
new InvalidPathSyntaxError(context.CurrentLocation.Offset(index)
.AddWindow(new CharacterSnippedLocation(1, index, CurrentPart)),
CurrentPart,
"A number expression must be at the start of the expression and cannot follow on anything else"));
return(false);
}
}
CurrentPart += c;
}
return(true);
}
