private static void ResolveImportResources(Templates start, HashSet <Templates> resourcesFound, Dictionary <string, Templates> cachedTemplates, Stack <Templates> parentTemplates)
{
resourcesFound.Add(start);
parentTemplates.Push(start);
foreach (var import in start.Imports)
{
LGResource resource;
try
{
var originalResource = new LGResource(start.Id, start.Source, start.Content);
resource = start.ImportResolver(originalResource, import.Id);
}
catch (Exception e)
{
var diagnostic = new Diagnostic(import.SourceRange.Range, e.Message, DiagnosticSeverity.Error, start.Source);
throw new TemplateException(e.Message, new List <Diagnostic>()
{
diagnostic
});
}
// Cycle reference would throw exception to avoid infinite Loop.
// Import self is allowed, and would ignore it.
if (parentTemplates.Peek().Id != resource.Id && parentTemplates.Any(u => u.Id == resource.Id))
{
var errorMsg = $"{TemplateErrors.LoopDetected} {resource.Id} => {start.Id}";
var diagnostic = new Diagnostic(import.SourceRange.Range, errorMsg, DiagnosticSeverity.Error, start.Source);
throw new TemplateException(errorMsg, new List <Diagnostic>()
{
diagnostic
});
}
if (resourcesFound.All(u => u.Id != resource.Id))
{
Templates childResource;
if (cachedTemplates.ContainsKey(resource.Id))
{
childResource = cachedTemplates[resource.Id];
}
else
{
childResource = InnerParseResource(resource, start.ImportResolver, start.ExpressionParser, cachedTemplates, parentTemplates);
cachedTemplates.Add(resource.Id, childResource);
}
ResolveImportResources(childResource, resourcesFound, cachedTemplates, parentTemplates);
}
}
parentTemplates.Pop();
}
private static void ResolveImportResources(Templates start, HashSet <Templates> resourcesFound, Dictionary <string, Templates> cachedTemplates)
{
resourcesFound.Add(start);
foreach (var import in start.Imports)
{
LGResource resource;
try
{
var originalResource = new LGResource(start.Id, start.Source, start.Content);
resource = start.ImportResolver(originalResource, import.Id);
}
catch (Exception e)
{
var diagnostic = new Diagnostic(import.SourceRange.Range, e.Message, DiagnosticSeverity.Error, start.Source);
throw new TemplateException(e.Message, new List <Diagnostic>()
{
diagnostic
});
}
if (resourcesFound.All(u => u.Id != resource.Id))
{
Templates childResource;
if (cachedTemplates.ContainsKey(resource.Id))
{
childResource = cachedTemplates[resource.Id];
}
else
{
childResource = ParseResource(resource, start.ImportResolver, start.ExpressionParser, cachedTemplates);
cachedTemplates.Add(resource.Id, childResource);
}
ResolveImportResources(childResource, resourcesFound, cachedTemplates);
}
}
}
