public KeyValuePair <string, PathType>?CompileCurrent(TokenzierContext context, int index, out Func <IMorestachioError> errProducer)
{
if (CurrentPart == ".")
{
PathParts.Add(null, PathType.SelfAssignment);
}
else if (CurrentPart == "../")
{
PathParts.Add(null, PathType.ParentSelector);
}
else if (CurrentPart == "~")
{
PathParts.Add(null, PathType.RootSelector);
}
else if (CurrentPart == "?")
{
PathParts.Add(null, PathType.ObjectSelector);
}
else if (CurrentPart.Trim() != string.Empty)
{
if (!ComputeCurrentPart(context, index, out errProducer))
{
errProducer = () => (
new InvalidPathSyntaxError(context.CurrentLocation.Offset(index)
.AddWindow(new CharacterSnippedLocation(1, index, CurrentPart)),
CurrentPart,
"Invalid character"));
return(default);
public string GetFormatterName(TokenzierContext context, int index, out bool found, out Func <IMorestachioError> errProducer)
{
var last = CompileCurrent(context, index, out errProducer);
if (last == null)
{
if (CurrentPart == string.Empty)
{
last = new KeyValuePair <string, PathType>(string.Empty, PathType.DataPath);
}
else
{
found = false;
return(null);
}
}
found = true;
if (last.Value.Value != PathType.DataPath)
{
PathParts.Add(last.Value.Key, last.Value.Value);
return(string.Empty);
}
return(last.Value.Key);
}
/// <summary>
/// Indexes the expression or template and creates a new Context for the given text by indexing all linebreaks
/// </summary>
/// <returns></returns>
public static TokenzierContext FromText(string expression, CultureInfo culture = null)
{
var tokenzierContext = new TokenzierContext(
Tokenizer.FindNewLines(expression).ToArray(), culture);
tokenzierContext.SetLocation(0);
return(tokenzierContext);
}
public IList <KeyValuePair <string, PathType> > CompileListWithCurrent(TokenzierContext context, int index, out Func <IMorestachioError> errProducer)
{
var last = CompileCurrent(context, index, out errProducer);
if (last == null)
{
return(PathParts.GetList());
}
if (!(PathParts.Many && last.Value.Value == PathType.SelfAssignment))
{
PathParts.Add(last.Value.Key, last.Value.Value);
}
return(PathParts.GetList());
}
public IList <KeyValuePair <string, PathType> > Compile(TokenzierContext context, int index)
{
return(PathParts.GetList());
}
private bool ComputeCurrentPart(TokenzierContext context, int index, out Func <IMorestachioError> errProducer)
{
errProducer = null;
var checkPathPart = CheckPathPart();
if (checkPathPart != -1)
{
errProducer = () => (
new InvalidPathSyntaxError(context.CurrentLocation.Offset(index)
.AddWindow(new CharacterSnippedLocation(1, checkPathPart, CurrentPart)),
CurrentPart));
return(false);
}
if (CurrentPart == "null")
{
if (PathParts.Any)
{
errProducer = () => (
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(null, PathType.Null);
return(true);
}
if (CurrentPart == "true" || CurrentPart == "false")
{
if (PathParts.Any)
{
errProducer = () => (
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(CurrentPart, PathType.Boolean);
return(true);
}
if (CurrentPart == "../")
{
PathParts.Add(null, PathType.ParentSelector);
return(true);
}
if (CurrentPart == "~")
{
PathParts.Add(null, PathType.RootSelector);
return(true);
}
if (CurrentPart == "?")
{
PathParts.Add(null, PathType.ObjectSelector);
return(true);
}
PathParts.Add(CurrentPart, PathType.DataPath);
return(true);
}
public bool Add(char c, TokenzierContext context, int index, out Func <IMorestachioError> errProducer)
{
errProducer = null;
if (!Tokenizer.IsExpressionPathChar(c))
{
errProducer = () => new InvalidPathSyntaxError(context.CurrentLocation.Offset(index)
.AddWindow(new CharacterSnippedLocation(1, index, CurrentPart)),
CurrentPart);
return(false);
}
if (PathParts.IsNullValue)
{
errProducer = () => new InvalidPathSyntaxError(context.CurrentLocation.Offset(index)
.AddWindow(new CharacterSnippedLocation(1, index, CurrentPart)),
CurrentPart,
"Nothing can follow on a null");
return(false);
}
LastCharWasDelimiter = c == '.';
if (c == '/')
{
if (CurrentPart == "..")
{
if (PathParts.Any && !PathParts.HasParentSelector)
{
errProducer = () => 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(null, PathType.ParentSelector);
CurrentPart = string.Empty;
return(true);
}
errProducer = () => 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)
{
errProducer = () => 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(null, PathType.RootSelector);
CurrentPart = string.Empty;
return(true);
}
if (c == '?')
{
PathParts.Add(null, PathType.ObjectSelector);
CurrentPart = string.Empty;
return(true);
}
if (c != '.' && CurrentPart == "." && !PathParts.Any)
{
//in this case somebody wrote .data
//so ignore the dot
CurrentPart = string.Empty;
}
if (CurrentPart != string.Empty && CurrentPart != "." && c == '.')
{
if (!ComputeCurrentPart(context, index, out errProducer))
{
return(false);
}
CurrentPart = "";
}
else
{
CurrentPart += c;
}
return(true);
}
