public override bool CanResolve(Entity owner, string key, bool fallback = false)
{
return(Resolvables.Contains(key) ||
(key == EntityKeys.InternalDirectoryKey && owner.HasPath) ||
owner.Value <VirtualFile>()?.HasPropertyValueEntity(MapFileAccessKey(key)) == true ||
(owner.Value <VirtualDirectory>()?.HasPropertyValueEntity(MapFileAccessKey(key)) == true &&
fallback));
}
public async Task <IEnumerable <VirtualFile> > InitalizeTemplate(Entity dataModel, ChangeObservable observable)
{
bool forced = dataModel.Value <CommandDefinition>()
.Argument <BoolArgument>(TemplateCommandBuilder.ForcedArgumentName)
.Value;
TemplateDescription template = dataModel.Template();
List <VirtualFile> generatedFiles = new List <VirtualFile>(await InitializeFiles().ConfigureAwait(false));
generatedFiles.AddRange(await InitializeSubTemplates().ConfigureAwait(false));
Exception e = dataModel.GetCodeExceptions();
if (e != null)
{
e.CompleteCodeExceptions(fileSystem.GetDirectory(dataModel.Root.Path));
throw e;
}
return(generatedFiles);
async Task <IEnumerable <VirtualFile> > InitializeFiles()
{
string basePath = dataModel.Root.Path;
HashSet <VirtualFile> files = new HashSet <VirtualFile>();
foreach (templateFile file in template.File)
{
(string content, Encoding encoding) = await GetResolvedTemplateContent(dataModel, file, template).ConfigureAwait(false);
VirtualFile destination = await GetFile(dataModel, file, forced, basePath, template).ConfigureAwait(false);
observable.OnNext(new Change(() => destination.Restore(),
$"Create file {Path.GetFileName(destination.Name)} for template " +
$"{template.name} in {destination.Parent.FullName}."));
using (Stream fileStream = destination.OpenWrite())
using (StreamWriter writer = new StreamWriter(fileStream, encoding))
{
fileStream.SetLength(0);
await writer.WriteAsync(content).ConfigureAwait(false);
}
files.Add(destination);
}
return(files);
}
async Task <IEnumerable <VirtualFile> > InitializeSubTemplates()
{
List <VirtualFile> files = new List <VirtualFile>();
foreach (templateReference reference in SortByRelationship(template.AddTemplate ?? Enumerable.Empty <templateReference>()))
{
if (repository.Template(reference.template) == null)
{
throw new TemplateReferenceNotDefinedException(reference.template);
}
CommandDefinitionBuilder pseudoDefinition = CommandDefinitionBuilder.Create()
.SetName(reference.template);
foreach (templateArgumentInstance argumentInstance in reference.Arguments)
{
AddArgument(argumentInstance, pseudoDefinition);
}
IEnumerable <IGrouping <string, templateRelationshipInstance> > grouped = (reference.Relationship ?? Enumerable.Empty <templateRelationshipInstance>()).GroupBy(r => r.name);
foreach (IGrouping <string, templateRelationshipInstance> relationshipInstances in grouped)
{
AddRelationships(relationshipInstances, pseudoDefinition, reference);
}
pseudoDefinition.CreateArgument()
.SetName(TemplateCommandBuilder.ForcedArgumentName)
.SetValue(forced)
.Build();
Entity referencedTemplateEntity = dataModel.Create(reference.template, pseudoDefinition.Build());
dataModel.AddEntity(referencedTemplateEntity);
files.AddRange(await InitalizeTemplate(referencedTemplateEntity, observable).ConfigureAwait(false));
}
return(files);
void AddArgument(templateArgumentInstance templateArgumentInstance, CommandDefinitionBuilder commandDefinitionBuilder)
{
string templateArgumentValue = resolver.Resolve(templateArgumentInstance.value, dataModel);
bool argumentHasNoValue = bool.TryParse(templateArgumentValue, out bool boolValue);
string[] argumentSplit = templateArgumentValue.Split(new[] { '|' }, StringSplitOptions.RemoveEmptyEntries);
bool isMultiArgument = argumentSplit.Length > 1;
if (argumentHasNoValue)
{
commandDefinitionBuilder.CreateArgument()
.SetName(templateArgumentInstance.name)
.SetValue(boolValue)
.Build();
}
else if (isMultiArgument)
{
commandDefinitionBuilder.CreateArgument()
.SetName(templateArgumentInstance.name)
.SetValue(argumentSplit)
.Build();
}
else
{
commandDefinitionBuilder.CreateArgument()
.SetName(templateArgumentInstance.name)
.SetValue(templateArgumentValue)
.Build();
}
}
void AddRelationships(IGrouping <string, templateRelationshipInstance> relationshipInstances,
CommandDefinitionBuilder commandDefinitionBuilder, templateReference reference)
{
templateRelationship relationshipDefinition = repository.Template(reference.template).Relationship
?.FirstOrDefault(r => r.name ==
relationshipInstances.Key);
if (relationshipDefinition == null)
{
throw new TemplateRelationshipNotFoundException(reference.template, relationshipInstances.Key);
}
bool multipleValues = relationshipDefinition.multiplicity == multiplicity.OneOrMore;
if (multipleValues)
{
string[] relationships = relationshipInstances.Select(r => resolver.Resolve(r.value, dataModel))
.ToArray();
commandDefinitionBuilder.CreateArgument()
.SetName(relationshipInstances.Key)
.SetValue(relationships)
.Build();
}
else
{
if (relationshipInstances.Count() != 1)
{
throw new RelationshipMultiplicityMismatchException(relationshipInstances.Key, reference.template);
}
commandDefinitionBuilder.CreateArgument()
.SetName(relationshipInstances.Key)
.SetValue(resolver.Resolve(relationshipInstances.Single().value, dataModel))
.Build();
}
}
IEnumerable <templateReference> SortByRelationship(IEnumerable <templateReference> references)
{
List <templateReference> unsorted = references.ToList();
List <templateReference> sorted = new List <templateReference>();
while (unsorted.Any())
{
Insert(unsorted[0]);
}
return(sorted);
void Insert(templateReference current, CycleChecker <templateReference> cycleChecker = null)
{
using (cycleChecker = cycleChecker?.SpawnChild() ?? new CycleChecker <templateReference>(
ExceptionTexts.TemplateRelationshipCycle,
() => cycleChecker = null))
{
cycleChecker.AddItem(current);
List <templateReference> dependent = new List <templateReference>();
foreach (templateRelationshipInstance relationshipInstance in current.Relationship ??
Enumerable
.Empty <
templateRelationshipInstance
>())
{
templateReference reference =
unsorted.FirstOrDefault(r => HasRelationship(r, relationshipInstance));
if (reference != null)
{
Insert(reference, cycleChecker);
}
else
{
reference = sorted.FirstOrDefault(r => HasRelationship(r, relationshipInstance));
}
if (reference != null)
{
dependent.Add(reference);
}
}
int skipping = dependent.Any() ? dependent.Select(d => sorted.IndexOf(d)).Max() : -1;
int index = skipping + 1;
sorted.Insert(index, current);
unsorted.Remove(current);
bool HasRelationship(templateReference currentReference,
templateRelationshipInstance relationshipInstance)
{
templateArgumentInstance instance = currentReference.Arguments
.FirstOrDefault(a => a.name
.Equals(
EntityKeys
.NameKey,
StringComparison
.OrdinalIgnoreCase));
return(instance?.value?.Equals(relationshipInstance.value,
StringComparison.OrdinalIgnoreCase) == true);
}
}
}
}
}
}
public override Entity Resolve(Entity owner, string key, bool fallback = false)
{
VirtualFile file = owner.Value <VirtualFile>();
if (file != null)
{
if (key == EntityKeys.PathKey)
{
return(owner.Create(key, file.Parent.FullName));
}
if (file.HasPropertyValueEntity(MapFileAccessKey(key)))
{
return(owner.PropertyValueEntity(MapFileAccessKey(key), file, key));
}
}
VirtualDirectory directory = owner.Value <VirtualDirectory>();
if (directory != null)
{
if (key == EntityKeys.PathKey)
{
return(owner.Create(key, directory.FullName));
}
if (directory.HasPropertyValueEntity(MapFileAccessKey(key)))
{
return(owner.PropertyValueEntity(MapFileAccessKey(key), directory, key));
}
}
switch (key)
{
case EntityKeys.NewlineKey:
return(owner.Create(key, Environment.NewLine));
case EntityKeys.ActiveDirectoryKey:
return(owner.Create(key, fileSystem.CurrentDirectory.FullName));
case EntityKeys.IsRootedKey:
bool isRooted = fileSystem.IsRooted(owner.Value <string>());
return(owner.Create(key, isRooted.ToString(CultureInfo.InvariantCulture), isRooted));
case EntityKeys.InternalDirectoryKey:
string path = owner.HasValue <string>() &&
fileSystem.DirectoryExists(owner.Value <string>())
? owner.Value <string>()
: owner.Path;
return(owner.Create(key, fileSystem.GetDirectory(path, createNew: false)));
case EntityKeys.InternalTempDirectoryKey:
return(owner.Create(key, TempDirectory));
case EntityKeys.ChunkStartKey:
return(owner.Create(key, owner.Value <DataChunk>().Start));
case EntityKeys.ChunkEndKey:
return(owner.Create(key, owner.Value <DataChunk>().End));
case EntityKeys.CountKey:
return(owner.Create(key, owner.Count.ToString(CultureInfo.InvariantCulture), owner.Count));
default:
throw new ContentProviderException(key, owner);
}
}
public override Entity Resolve(Entity owner, string key, bool fallback = false)
{
VirtualFile file = owner.Value <VirtualFile>();
if (file != null)
{
if (key == EntityKeys.PathKey)
{
return(owner.Create(key, file.Parent.FullName));
}
if (file.HasPropertyValueEntity(MapFileAccessKey(key)))
{
return(owner.PropertyValueEntity(MapFileAccessKey(key), file, key));
}
}
VirtualDirectory directory = owner.Value <VirtualDirectory>();
if (directory != null)
{
if (key == EntityKeys.PathKey)
{
return(owner.Create(key, directory.FullName));
}
if (directory.HasPropertyValueEntity(MapFileAccessKey(key)))
{
return(owner.PropertyValueEntity(MapFileAccessKey(key), directory, key));
}
}
switch (key)
{
case EntityKeys.NewlineKey:
return(owner.Create(key, Environment.NewLine));
case EntityKeys.ActiveDirectoryKey:
return(owner.Create(key, fileSystem.CurrentDirectory.FullName));
case EntityKeys.IsRootedKey:
bool isRooted = fileSystem.IsRooted(owner.Value <string>());
return(owner.Create(key, isRooted.ToString(CultureInfo.InvariantCulture), isRooted));
case EntityKeys.InternalDirectoryKey:
string path = owner.HasValue <string>() &&
fileSystem.DirectoryExists(owner.Value <string>())
? owner.Value <string>()
: owner.Path;
return(owner.Create(key, fileSystem.GetDirectory(path, createNew: false)));
case EntityKeys.InternalTempDirectoryKey:
return(owner.Create(key, TempDirectory));
case EntityKeys.ChunkStartKey:
return(owner.Create(key, owner.Value <DataChunk>().Start));
case EntityKeys.ChunkEndKey:
return(owner.Create(key, owner.Value <DataChunk>().End));
case EntityKeys.CountKey:
return(owner.Create(key, owner.Count.ToString(CultureInfo.InvariantCulture), owner.Count));
case EntityKeys.IncrementKey:
return(IncrementValue());
case EntityKeys.DecrementKey:
return(DecrementValue());
case EntityKeys.NegateKey:
if (bool.TryParse(owner.Value <string>(), out bool value))
{
return(owner.Create(key, (!value).ToString(CultureInfo.InvariantCulture), !value));
}
throw new ContentProviderException(key, owner);
case EntityKeys.OriginKey:
return(owner.Origin);
case EntityKeys.ThrowIfMultidimensionalKey:
if (owner.Value <string>()?.Contains(",") == true)
{
throw new MultidimensionalArrayNotSupportedException();
}
return(owner);
default:
throw new ContentProviderException(key, owner);
Entity IncrementValue()
{
string number = owner.Value <string>();
if (number != null)
{
if (int.TryParse(number, out int result))
{
result++;
return(owner.Create(key, result.ToString(CultureInfo.InvariantCulture), result));
}
}
return(owner.Create(key, number));
}
Entity DecrementValue()
{
string number = owner.Value <string>();
if (number != null)
{
if (int.TryParse(number, out int result))
{
result--;
return(owner.Create(key, result.ToString(CultureInfo.InvariantCulture), result));
}
}
return(owner.Create(key, number));
}
}
}