/**
* Builds LHS pathElement and validates to specification
*/
protected ModifierSpec(string rawJsonKey, OpMode opMode)
{
string prefix = rawJsonKey.Substring(0, 1);
string suffix = rawJsonKey.Length > 1 ? rawJsonKey.Substring(rawJsonKey.Length - 1) : null;
if (OpMode.IsValid(prefix))
{
_opMode = OpMode.From(prefix);
rawJsonKey = rawJsonKey.Substring(1);
}
else
{
_opMode = opMode;
}
if (suffix == "?" && !rawJsonKey.EndsWith("\\?"))
{
_checkValue = true;
rawJsonKey = rawJsonKey.Substring(0, rawJsonKey.Length - 1);
}
else
{
_checkValue = false;
}
_pathElement = PathElementBuilder.BuildMatchablePathElement(rawJsonKey);
if (!(_pathElement is IStarPathElement) && !(_pathElement is LiteralPathElement) && !(_pathElement is ArrayPathElement))
{
throw new SpecException(opMode.GetName() + " cannot have " + _pathElement.GetType().Name + " RHS");
}
}
/**
* Create a path element and ensures it is a Matchable Path Element
*/
public static IMatchablePathElement BuildMatchablePathElement(string rawJsonKey)
{
IPathElement pe = PathElementBuilder.ParseSingleKeyLHS(rawJsonKey);
if (!(pe is IMatchablePathElement mpe))
{
throw new SpecException("Spec LHS key=" + rawJsonKey + " is not a valid LHS key.");
}
return((IMatchablePathElement)mpe);
}
public PathEvaluatingTraversal(string dotNotation)
{
if ((dotNotation.Contains("*") && !dotNotation.Contains("\\*")) ||
(dotNotation.Contains("$") && !dotNotation.Contains("\\$")))
{
throw new SpecException("DotNotation (write key) can not contain '*' or '$' : write key: " + dotNotation);
}
List <IPathElement> paths;
Traversr trav;
if (!String.IsNullOrWhiteSpace(dotNotation))
{
// Compute the path elements.
paths = PathElementBuilder.ParseDotNotationRHS(dotNotation);
// Use the canonical versions of the path elements to create the Traversr
var traversrPaths = new List <string>(paths.Count);
foreach (IPathElement pe in paths)
{
traversrPaths.Add(pe.GetCanonicalForm());
}
trav = CreateTraversr(traversrPaths);
}
else
{
paths = new List <IPathElement>();
trav = CreateTraversr(new List <string>(new[] { "" }));
}
var evalPaths = new List <IEvaluatablePathElement>(paths.Count);
foreach (IPathElement pe in paths)
{
if (!(pe is IEvaluatablePathElement epe))
{
throw new SpecException("RHS key=" + pe.RawKey + " is not a valid RHS key.");
}
evalPaths.Add(epe);
}
_elements = evalPaths.AsReadOnly();
_traversr = trav;
}
public ShiftrSpec(string rawJsonKey)
{
_pathElement = PathElementBuilder.BuildMatchablePathElement(rawJsonKey);
}