// In general documents will have a relative path (relative to the project root).
// We can only really compute a nice class/namespace when we know a relative path.
//
// However all kinds of thing are possible in tools. We shouldn't barf here if the document isn't
// set up correctly.
private bool TryComputeNamespaceAndClass(string filePath, string relativePath, out string @namespace, out string @class)
{
if (filePath == null || relativePath == null || filePath.Length <= relativePath.Length)
{
@namespace = null;
@class = null;
return(false);
}
// Try and infer a namespace from the project directory. We don't yet have the ability to pass
// the namespace through from the project.
var trimLength = relativePath.Length + (relativePath.StartsWith("/") ? 0 : 1);
var baseDirectory = filePath.Substring(0, filePath.Length - trimLength);
var lastSlash = baseDirectory.LastIndexOfAny(PathSeparators);
var baseNamespace = lastSlash == -1 ? baseDirectory : baseDirectory.Substring(lastSlash + 1);
if (string.IsNullOrEmpty(baseNamespace))
{
@namespace = null;
@class = null;
return(false);
}
var builder = new StringBuilder();
// Sanitize the base namespace, but leave the dots.
var segments = baseNamespace.Split(NamespaceSeparators, StringSplitOptions.RemoveEmptyEntries);
builder.Append(CSharpIdentifier.SanitizeClassName(segments[0]));
for (var i = 1; i < segments.Length; i++)
{
builder.Append('.');
builder.Append(CSharpIdentifier.SanitizeClassName(segments[i]));
}
segments = relativePath.Split(PathSeparators, StringSplitOptions.RemoveEmptyEntries);
// Skip the last segment because it's the FileName.
for (var i = 0; i < segments.Length - 1; i++)
{
builder.Append('.');
builder.Append(CSharpIdentifier.SanitizeClassName(segments[i]));
}
@namespace = builder.ToString();
@class = CSharpIdentifier.SanitizeClassName(Path.GetFileNameWithoutExtension(relativePath));
return(true);
}
/// <inheritdoc />
protected override void OnDocumentStructureCreated(
RazorCodeDocument codeDocument,
NamespaceDeclarationIntermediateNode @namespace,
ClassDeclarationIntermediateNode @class,
MethodDeclarationIntermediateNode method)
{
if (!TryComputeNamespaceAndClass(
codeDocument.Source.FilePath,
codeDocument.Source.RelativePath,
out var computedNamespace,
out var computedClass))
{
// If we can't compute a nice namespace (no relative path) then just generate something
// mangled.
computedNamespace = BaseNamespace;
computedClass = CSharpIdentifier.GetClassNameFromPath(codeDocument.Source.FilePath) ?? "__BlazorComponent";
}
if (MangleClassNames)
{
computedClass = "__" + computedClass;
}
@namespace.Content = computedNamespace;
@class.BaseType = ComponentsApi.ComponentBase.FullTypeName;
@class.ClassName = computedClass;
@class.Modifiers.Clear();
@class.Modifiers.Add("public");
var documentNode = codeDocument.GetDocumentIntermediateNode();
var typeParamReferences = documentNode.FindDirectiveReferences(TypeParamDirective.Directive);
for (var i = 0; i < typeParamReferences.Count; i++)
{
var typeParamNode = (DirectiveIntermediateNode)typeParamReferences[i].Node;
if (typeParamNode.HasDiagnostics)
{
continue;
}
@class.TypeParameters.Add(new TypeParameter()
{
ParameterName = typeParamNode.Tokens.First().Content,
});
}
method.ReturnType = "void";
method.MethodName = ComponentsApi.ComponentBase.BuildRenderTree;
method.Modifiers.Clear();
method.Modifiers.Add("protected");
method.Modifiers.Add("override");
method.Parameters.Clear();
method.Parameters.Add(new MethodParameter()
{
ParameterName = "builder",
TypeName = ComponentsApi.RenderTreeBuilder.FullTypeName,
});
// We need to call the 'base' method as the first statement.
var callBase = new CSharpCodeIntermediateNode();
callBase.Annotations.Add(BuildRenderTreeBaseCallAnnotation, true);
callBase.Children.Add(new IntermediateToken
{
Kind = TokenKind.CSharp,
Content = $"base.{ComponentsApi.ComponentBase.BuildRenderTree}(builder);"
});
method.Children.Insert(0, callBase);
}
