private void CheckCompatibility(TemplateDescription template, Entity dataModel)
{
IEnumerable <TemplateDescription> roots = FindCompatibleRoots();
TemplateEntity templateEntity = TemplateEntity.Decorate(dataModel.Root);
List <TemplateDescription> dataModelTemplates = GetTemplateHierarchy();
if (templateEntity.HasTemplate &&
!roots.Any(dataModelTemplates.Contains))
{
throw new TemplateIncompatibleException(template.name, templateEntity.Template.name);
}
List <TemplateDescription> GetTemplateHierarchy()
{
List <TemplateDescription> result = new List <TemplateDescription>();
if (!templateEntity.HasTemplate)
{
return(result);
}
TemplateDescription current = templateEntity.Template;
result.Add(current);
while (!string.IsNullOrEmpty(current?.basedOn))
{
current = repository.Template(current.basedOn);
result.Add(current);
}
return(result);
}
IEnumerable <TemplateDescription> FindCompatibleRoots()
{
List <TemplateDescription> unvisited = new List <TemplateDescription>(new [] { template });
List <TemplateDescription> visited = new List <TemplateDescription>();
List <TemplateDescription> result = new List <TemplateDescription>();
while (unvisited.Except(visited).Any())
{
TemplateDescription visiting = unvisited.Except(visited).First();
visited.Add(visiting);
if (visiting.isRoot)
{
result.Add(visiting);
}
else
{
unvisited.AddRange(visiting.Relationship
.Where(relationship => repository.Template(relationship.type) != null)
.Select(relationship => repository.Template(relationship.type)));
}
}
return(result.Distinct());
}
}
private async Task <VirtualFile> GetFile(Entity dataModel, templateFile file, bool forced, string basePath,
TemplateDescription template)
{
string path = await resolver.ResolveAsync(file.path ?? string.Empty, dataModel).ConfigureAwait(false);
string name = await resolver.ResolveAsync(file.name, dataModel).ConfigureAwait(false);
if (!forced && fileSystem.FileExists(Path.Combine(path, name), basePath))
{
throw new FileExistsException(name, template.name);
}
VirtualFile destination = fileSystem.GetFile(Path.Combine(path, name), basePath);
return(destination);
}
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 async Task GenerateFiles(Entity rootEntity, string generator, string output, bool outputDefined,
ChangeObservable observable)
{
IEnumerable <Entity> generatableEntities = rootEntity.Hierarchy();
HashSet <VirtualFile> generatedFiles = new HashSet <VirtualFile>();
HashSet <VirtualDirectory> rootDirectories = new HashSet <VirtualDirectory>();
foreach (Entity generatableEntity in generatableEntities)
{
await GenerateFilesForEntity(generatableEntity).ConfigureAwait(false);
}
Exception e = rootEntity.GetCodeExceptions();
if (e != null)
{
e.CompleteCodeExceptions(fileSystem.GetDirectory(rootEntity.Path));
throw e;
}
foreach (VirtualDirectory rootDirectory in rootDirectories)
{
DeleteRedundantFiles(rootDirectory);
}
void DeleteRedundantFiles(VirtualDirectory rootDirectory)
{
foreach (VirtualFile file in rootDirectory.Files(searchRecursive:true).Where(f => !generatedFiles.Contains(f)).ToArray())
{
VirtualDirectory current = file.Parent;
file.Delete();
while (current != null && !current.Entries.Any())
{
VirtualDirectory next = current.Parent;
current.Delete();
current = next;
}
}
}
async Task GenerateFilesForEntity(Entity generatableEntity)
{
TemplateDescription template = generatableEntity.Template();
if (template == null)
{
return;
}
foreach (templateGeneratedFile file in template.GeneratedFile ?? Enumerable.Empty <templateGeneratedFile>())
{
if (generator != "all" && !file.generator.Equals(generator, StringComparison.OrdinalIgnoreCase))
{
continue;
}
if (!string.IsNullOrEmpty(file.condition))
{
string condition = await resolver.ResolveAsync(file.condition, generatableEntity).ConfigureAwait(false);
if (condition.Equals("false", StringComparison.OrdinalIgnoreCase))
{
continue;
}
}
(string content, Encoding encoding) = await GetResolvedTemplateContent(generatableEntity, file, template).ConfigureAwait(false);
VirtualDirectory baseDirectory = GetBaseDirectory(file);
VirtualFile destination = await GetFile(generatableEntity, file, true, baseDirectory.FullName, template).ConfigureAwait(false);
rootDirectories.Add(baseDirectory);
generatedFiles.Add(destination);
observable.OnNext(new Change(() => destination.Restore(), $"Generated the file {destination.FullName}."));
using (Stream fileStream = destination.OpenComparingWriteStream())
using (StreamWriter writer = new StreamWriter(fileStream, encoding))
{
await writer.WriteAsync(content).ConfigureAwait(false);
}
}
VirtualDirectory GetBaseDirectory(templateGeneratedFile file)
{
string generatorPath = output;
if (!outputDefined)
{
generatorPath = Path.Combine(Constants.IntermediateFolderName, file.generator.ToLowerInvariant());
}
else if (generator == "all")
{
generatorPath = Path.Combine(generatorPath, file.generator.ToLowerInvariant());
}
return(fileSystem.GetDirectory(generatorPath, rootEntity.Path));
}
}
}
private async Task <(string content, Encoding encoding)> GetResolvedTemplateContent(Entity dataModel, templateFile file, TemplateDescription template)
{
string content;
Encoding encoding;
using (Stream fileStream = fileSystem.GetFile(file.template, repository.GetTemplateBase(template)).OpenRead())
using (StreamReader reader = new StreamReader(fileStream, Encoding.UTF8, true))
{
encoding = reader.CurrentEncoding;
content = await reader.ReadToEndAsync().ConfigureAwait(false);
}
content = await resolver.ResolveAsync(content, dataModel).ConfigureAwait(false);
return(content, encoding);
}
private async Task <(string content, Encoding encoding)> GetResolvedTemplateContent(Entity dataModel, templateFile file, TemplateDescription template)
{
string content;
Encoding encoding;
VirtualFile virtualFile = fileSystem.GetFile(file.template, repository.GetTemplateBase(template));
if (!virtualFile.Exists)
{
return(default);