/// <summary>
/// Gets <see cref="AliasDefinition"/> by name.
/// </summary>
/// <param name="name">Alias name.</param>
/// <returns>Returns instance of <see cref="AliasDefinition"/> or null if definition is not found.</returns>
public AliasDefinition GetAliasDefinition(string name)
{
NsInfo resultInfo =
ModuleMembersNsInfo.FirstOrDefault(a => (a.ModuleMember is DOM.AliasDefinition) && a.ModuleMember.Name == name);
return((AliasDefinition)resultInfo?.ModuleMember);
}
private void CheckModuleMember(NsInfo nsInfo)
{
if (!(nsInfo.ModuleMember is Document))
{
ValidateAliasDefDefaultParameter((AliasDefinition)nsInfo.ModuleMember);
return;
}
}
private void ResolveAliasesInModuleMember(NsInfo nsInfo)
{
foreach (var alias in nsInfo.Aliases)
{
NsInfo aliasNsInfo = ResolveAliasInModuleMember((Alias)alias, nsInfo);
if (aliasNsInfo == null)
{
continue;
}
MergeNsInfo(nsInfo, aliasNsInfo);
}
}
private void MergeNsInfo(NsInfo destNsInfo, NsInfo nsInfo)
{
foreach (var ns in nsInfo.Namespaces)
{
var uri = ns.Value;
var destNs = destNsInfo.Namespaces.FirstOrDefault(n => n.Value == uri);
if (destNs != null)
{
continue;
}
var prefix = FindFreePrefix(ns.Name, destNsInfo.Namespaces);
destNsInfo.Namespaces.Add(new NamespaceDefinition(prefix, AssignmentEnum.E, ns.Value));
}
}
private NsInfo ResolveAliasInModuleMember(Alias alias, NsInfo memberNsInfo)
{
//Finding AliasDef
var aliasDef = LookupAliasDef(alias);
if (aliasDef == null)
{
//Report Error if alias is not defined
//_context.AddError(CompilerErrorFactory.AliasIsNotDefined(alias, memberNsInfo.ModuleMember.Module.FileName));
return(null);
}
if (aliasDef.IsValueNode != alias.IsValueNode && alias.IsValueNode)
{
_context.AddError(CompilerErrorFactory.CantUseBlockAliasAsValue(alias,
memberNsInfo.ModuleMember.Module.FileName));
}
return(ResolveAliasesInAliasDefinition(aliasDef));
}
private NsInfo ResolveAliasesInAliasDefinition(NsInfo aliasDefNsInfo)
{
//Check if Alias is already being resolved (circular reference)
if (_aliasDefStack.Any(n => n == aliasDefNsInfo))
{
//Report Error
foreach (var info in _aliasDefStack)
{
_context.AddError(CompilerErrorFactory.AliasDefHasCircularReference(info));
((AliasDefinition)info.ModuleMember).HasCircularReference = true;
if (info == aliasDefNsInfo)
{
break;
}
}
return(aliasDefNsInfo);
}
_aliasDefStack.Push(aliasDefNsInfo);
foreach (var alias in aliasDefNsInfo.Aliases)
{
NsInfo aliasNsInfo = ResolveAliasInAliasDefinition(alias);
if (aliasNsInfo == null)
{
continue;
}
MergeNsInfo(aliasDefNsInfo, aliasNsInfo);
}
_aliasDefStack.Pop();
aliasDefNsInfo.AliasesResolved = true;
return(aliasDefNsInfo);
}
/// <summary>
/// Sets current <see cref="ModuleMember"/>.
/// Method should be called from the visitor.
/// </summary>
/// <param name="aliasDefinition">Current <see cref="AliasDefinition"/>.</param>
public void EnterAliasDef(AliasDefinition aliasDefinition)
{
_currentModuleMember = aliasDefinition;
_currentModuleMemberNsInfo = new NsInfo(_currentModuleMember);
ModuleMembersNsInfo.Add(_currentModuleMemberNsInfo);
}
/// <summary>
/// Sets current <see cref="ModuleMember"/>.
/// Method should be called from the visitor.
/// </summary>
/// <param name="document">Current <see cref="Document"/>.</param>
public void EnterDocument(Document document)
{
_currentModuleMember = document;
_currentModuleMemberNsInfo = new NsInfo(_currentModuleMember);
ModuleMembersNsInfo.Add(_currentModuleMemberNsInfo);
}
