protected override void ExecuteCore(RazorCodeDocument codeDocument)
{
var syntaxTree = codeDocument.GetSyntaxTree();
ThrowForMissingDocumentDependency(syntaxTree);
var descriptors = codeDocument.GetTagHelpers();
if (descriptors == null)
{
var feature = Engine.Features.OfType <ITagHelperFeature>().FirstOrDefault();
if (feature == null)
{
// No feature, nothing to do.
return;
}
descriptors = feature.GetDescriptors();
}
// We need to find directives in all of the *imports* as well as in the main razor file
//
// The imports come logically before the main razor file and are in the order they
// should be processed.
DirectiveVisitor visitor = null;
var parserOptions = codeDocument.GetParserOptions();
if (FileKinds.IsComponent(codeDocument.GetFileKind()) &&
(parserOptions == null || parserOptions.FeatureFlags.AllowComponentFileKind))
{
codeDocument.TryComputeNamespace(fallbackToRootNamespace: true, out var currentNamespace);
visitor = new ComponentDirectiveVisitor(codeDocument.Source.FilePath, descriptors, currentNamespace);
}
else
{
visitor = new TagHelperDirectiveVisitor(descriptors);
}
var imports = codeDocument.GetImportSyntaxTrees();
if (imports != null)
{
for (var i = 0; i < imports.Count; i++)
{
var import = imports[i];
visitor.Visit(import);
}
}
visitor.Visit(syntaxTree);
// This will always be null for a component document.
var tagHelperPrefix = visitor.TagHelperPrefix;
descriptors = visitor.Matches.ToArray();
var context = TagHelperDocumentContext.Create(tagHelperPrefix, descriptors);
codeDocument.SetTagHelperContext(context);
if (descriptors.Count == 0)
{
// No descriptors, no-op.
return;
}
var rewrittenSyntaxTree = TagHelperParseTreeRewriter.Rewrite(syntaxTree, tagHelperPrefix, descriptors);
codeDocument.SetSyntaxTree(rewrittenSyntaxTree);
}
protected override void ExecuteCore(RazorCodeDocument codeDocument)
{
var syntaxTree = codeDocument.GetSyntaxTree();
ThrowForMissingDocumentDependency(syntaxTree);
var feature = Engine.Features.OfType <ITagHelperFeature>().FirstOrDefault();
if (feature == null)
{
// No feature, nothing to do.
return;
}
// We need to find directives in all of the *imports* as well as in the main razor file
//
// The imports come logically before the main razor file and are in the order they
// should be processed.
var descriptors = feature.GetDescriptors();
var visitor = new DirectiveVisitor(descriptors);
var imports = codeDocument.GetImportSyntaxTrees();
if (imports != null)
{
for (var i = 0; i < imports.Count; i++)
{
var import = imports[i];
visitor.VisitBlock(import.Root);
}
}
visitor.VisitBlock(syntaxTree.Root);
var tagHelperPrefix = visitor.TagHelperPrefix;
descriptors = visitor.Matches.ToArray();
var context = TagHelperDocumentContext.Create(tagHelperPrefix, descriptors);
codeDocument.SetTagHelperContext(context);
if (descriptors.Count == 0)
{
// No descriptors, no-op.
return;
}
var errorSink = new ErrorSink();
var rewriter = new TagHelperParseTreeRewriter(tagHelperPrefix, descriptors, syntaxTree.Options.FeatureFlags);
var root = syntaxTree.Root;
root = rewriter.Rewrite(root, errorSink);
// Temporary code while we're still using legacy diagnostics in the SyntaxTree.
var errorList = new List <RazorDiagnostic>();
errorList.AddRange(errorSink.Errors.Select(error => RazorDiagnostic.Create(error)));
errorList.AddRange(descriptors.SelectMany(d => d.GetAllDiagnostics()));
var diagnostics = CombineErrors(syntaxTree.Diagnostics, errorList);
var newSyntaxTree = RazorSyntaxTree.Create(root, syntaxTree.Source, diagnostics, syntaxTree.Options);
codeDocument.SetSyntaxTree(newSyntaxTree);
}
