/// <summary>
/// Ensures that pair value is either Alias or Parameter.
/// Validates string concatenation.
/// </summary>
/// <param name="pair"></param>
private void CheckPairValue(Pair pair)
{
if (pair.Delimiter == DelimiterEnum.CE)
{
if (pair.PairValue == null || !(pair.PairValue is DOM.Alias) && !(pair.PairValue is DOM.Parameter))
{
var mappedPair = pair.PairValue as IMappedPair;
Context.AddError(mappedPair != null
? CompilerErrorFactory.AliasOrParameterExpected(mappedPair.NameInterval, _currentModule.FileName)
: CompilerErrorFactory.AliasOrParameterExpected(((IMappedPair)pair).NameInterval,
_currentModule.FileName));
}
else
{
Visit(pair.PairValue);
}
}
else if (pair.Delimiter == DelimiterEnum.EC)
{
CheckStringConcatenation(pair);
}
if (pair.PairValue is DOM.Parameter)
{
var aliasContext = AliasContext.Peek();
if (aliasContext != null)
{
ValidateParameter((Parameter)pair.PairValue, aliasContext.Alias, _currentModule.FileName);
}
}
else if (pair.PairValue is DOM.Alias)
{
Alias alias = (Alias)pair.PairValue;
CheckAliasIsDefined(alias);
var aliasDef = alias.AliasDefinition;
//Do not resolve alias without AliasDef or having circular reference
if (aliasDef == null || aliasDef.HasCircularReference)
{
return;
}
AliasContext.Push(new AliasContext()
{
AliasDefinition = aliasDef, Alias = alias, AliasNsInfo = GetContextNsInfo()
});
CheckForUnexpectedArguments(alias, aliasDef, _currentModule.FileName);
CheckInterpolation(aliasDef);
CheckPairValue(aliasDef);
if (CheckStartOfChoiceContainer(alias, aliasDef.Entities, aliasDef))
{
Visit(aliasDef.Entities.Where(e => !(e is DOM.Attribute)));
EndChoiceContainer(/*aliasDef, aliasDef.Entities*/);
}
else
{
Visit(aliasDef.Entities.Where(e => !(e is DOM.Attribute)));
}
AliasContext.Pop();
}
}
