/// <summary>
/// Performs a pattern match operation.
/// </summary>
/// <param name="CheckAgainst">Value to check against.</param>
/// <param name="AlreadyFound">Variables already identified.</param>
/// <returns>Pattern match result</returns>
public override PatternMatchResult PatternMatch(IElement CheckAgainst, Dictionary <string, IElement> AlreadyFound)
{
if (!(CheckAgainst is ObjectValue Obj))
{
return(PatternMatchResult.NoMatch);
}
if (this.quick is null)
{
Dictionary <string, ScriptNode> Quick = new Dictionary <string, ScriptNode>();
foreach (KeyValuePair <string, ScriptNode> N in this.members)
{
Quick[N.Key] = N.Value;
}
this.quick = Quick;
}
PatternMatchResult Result;
if (Obj.AssociatedObjectValue is Dictionary <string, IElement> Object)
{
foreach (KeyValuePair <string, IElement> P in Object)
{
if (!(this.quick.ContainsKey(P.Key)))
{
return(PatternMatchResult.NoMatch);
}
}
foreach (KeyValuePair <string, ScriptNode> P in this.members)
{
if (Object.TryGetValue(P.Key, out IElement E))
{
Result = P.Value.PatternMatch(E, AlreadyFound);
}
else
{
Result = P.Value.PatternMatch(ObjectValue.Null, AlreadyFound);
}
if (Result != PatternMatchResult.Match)
{
return(Result);
}
}
}
else if (Obj.AssociatedObjectValue is Dictionary <string, object> Object2)
{
foreach (KeyValuePair <string, object> P in Object2)
{
if (!(this.quick.ContainsKey(P.Key)))
{
return(PatternMatchResult.NoMatch);
}
}
foreach (KeyValuePair <string, ScriptNode> P in this.members)
{
if (Object2.TryGetValue(P.Key, out object E))
{
Result = P.Value.PatternMatch(Expression.Encapsulate(E), AlreadyFound);
}
else
{
Result = P.Value.PatternMatch(ObjectValue.Null, AlreadyFound);
}
if (Result != PatternMatchResult.Match)
{
return(Result);
}
}
}
return(PatternMatchResult.Match);
}
