public async Task <Document> AddImportsAsync(Document document, IEnumerable <TextSpan> spans, OptionSet options, CancellationToken cancellationToken)
{
options = options ?? await document.GetOptionsAsync(cancellationToken).ConfigureAwait(false);
var model = await document.GetSemanticModelAsync(cancellationToken).ConfigureAwait(false);
var root = await model.SyntaxTree.GetRootAsync(cancellationToken).ConfigureAwait(false);
// Create a simple interval tree for simplification spans.
var spansTree = new SimpleIntervalTree <TextSpan>(TextSpanIntervalIntrospector.Instance, spans);
Func <SyntaxNodeOrToken, bool> isInSpan = (nodeOrToken) =>
spansTree.GetOverlappingIntervals(nodeOrToken.FullSpan.Start, nodeOrToken.FullSpan.Length).Any();
var nodesWithExplicitNamespaces = root.DescendantNodesAndSelf().Where(n => isInSpan(n) && GetExplicitNamespaceSymbol(n, model) != null).ToList();
var namespacesToAdd = new HashSet <INamespaceSymbol>();
namespacesToAdd.AddRange(nodesWithExplicitNamespaces.Select(n => GetExplicitNamespaceSymbol(n, model)));
// annotate these nodes so they get simplified later
var newRoot = root.ReplaceNodes(nodesWithExplicitNamespaces, (o, r) => r.WithAdditionalAnnotations(Simplifier.Annotation));
var newDoc = document.WithSyntaxRoot(newRoot);
var newModel = await newDoc.GetSemanticModelAsync(cancellationToken).ConfigureAwait(false);
newRoot = await this.AddNamespaceImportsAsync(newDoc, newModel, options, namespacesToAdd, cancellationToken).ConfigureAwait(false);
return(document.WithSyntaxRoot(newRoot));
}
public async Task<Document> AddImportsAsync(Document document, IEnumerable<TextSpan> spans, OptionSet options, CancellationToken cancellationToken)
{
options = options ?? document.Project.Solution.Workspace.Options;
var model = await document.GetSemanticModelAsync(cancellationToken).ConfigureAwait(false);
var root = await model.SyntaxTree.GetRootAsync(cancellationToken).ConfigureAwait(false);
// Create a simple interval tree for simplification spans.
var spansTree = new SimpleIntervalTree<TextSpan>(TextSpanIntervalIntrospector.Instance, spans);
Func<SyntaxNodeOrToken, bool> isInSpan = (nodeOrToken) =>
spansTree.GetOverlappingIntervals(nodeOrToken.FullSpan.Start, nodeOrToken.FullSpan.Length).Any();
var nodesWithExplicitNamespaces = root.DescendantNodesAndSelf().Where(n => isInSpan(n) && GetExplicitNamespaceSymbol(n, model) != null).ToList();
var namespacesToAdd = new HashSet<INamespaceSymbol>();
namespacesToAdd.AddRange(nodesWithExplicitNamespaces.Select(n => GetExplicitNamespaceSymbol(n, model)));
// annotate these nodes so they get simplified later
var newRoot = root.ReplaceNodes(nodesWithExplicitNamespaces, (o, r) => r.WithAdditionalAnnotations(Simplifier.Annotation));
var newDoc = document.WithSyntaxRoot(newRoot);
var newModel = await newDoc.GetSemanticModelAsync(cancellationToken).ConfigureAwait(false);
newRoot = await this.AddNamespaceImportsAsync(newDoc, newModel, options, namespacesToAdd, cancellationToken).ConfigureAwait(false);
return document.WithSyntaxRoot(newRoot);
}
private void Validate(TextSpan textSpan)
{
#if DEBUG
if (nonOverlappingSpans == null)
{
nonOverlappingSpans = SimpleIntervalTree.Create(TextSpanIntervalIntrospector.Instance);
}
// new span should not overlap with any span that we already have.
Contract.Requires(!nonOverlappingSpans.GetOverlappingIntervals(textSpan.Start, textSpan.Length).Any());
nonOverlappingSpans = nonOverlappingSpans.AddInterval(textSpan);
#endif
}
private async Task <SyntaxNode> ReduceAsync(
Document document,
SyntaxNode root,
SemanticModel semanticModel,
IEnumerable <TextSpan> spans,
OptionSet optionSet,
IEnumerable <AbstractReducer> reducers,
CancellationToken cancellationToken)
{
// Create a simple interval tree for simplification spans.
var spansTree = new SimpleIntervalTree <TextSpan>(TextSpanIntervalIntrospector.Instance, spans);
Func <SyntaxNodeOrToken, bool> isNodeOrTokenOutsideSimplifySpans = (nodeOrToken) =>
!spansTree.GetOverlappingIntervals(nodeOrToken.FullSpan.Start, nodeOrToken.FullSpan.Length).Any();
// Get the list of syntax nodes and tokens that need to be reduced.
ImmutableArray <NodeOrTokenToReduce> nodesAndTokensToReduce = this.GetNodesAndTokensToReduce(root, isNodeOrTokenOutsideSimplifySpans);
if (nodesAndTokensToReduce.Any())
{
if (reducers == null)
{
reducers = this.GetReducers();
}
var reducedNodesMap = new ConcurrentDictionary <SyntaxNode, SyntaxNode>();
var reducedTokensMap = new ConcurrentDictionary <SyntaxToken, SyntaxToken>();
// Reduce all the nodesAndTokensToReduce using the given reducers/rewriters and
// store the reduced nodes and/or tokens in the reduced nodes/tokens maps.
// Note that this method doesn't update the original syntax tree.
await this.ReduceAsync(document, root, nodesAndTokensToReduce, reducers, optionSet, semanticModel, reducedNodesMap, reducedTokensMap, cancellationToken).ConfigureAwait(false);
if (reducedNodesMap.Any() || reducedTokensMap.Any())
{
// Update the syntax tree with reduced nodes/tokens.
root = root.ReplaceSyntax(
nodes: reducedNodesMap.Keys,
computeReplacementNode: (o, n) => TransformReducedNode(reducedNodesMap[o], n),
tokens: reducedTokensMap.Keys,
computeReplacementToken: (o, n) => reducedTokensMap[o],
trivia: SpecializedCollections.EmptyEnumerable <SyntaxTrivia>(),
computeReplacementTrivia: null);
}
}
return(root);
}
public async Task <Document> AddImportsAsync(
Document document, IEnumerable <TextSpan> spans,
OptionSet options, CancellationToken cancellationToken)
{
options = options ?? await document.GetOptionsAsync(cancellationToken).ConfigureAwait(false);
var model = await document.GetSemanticModelAsync(cancellationToken).ConfigureAwait(false);
var root = await model.SyntaxTree.GetRootAsync(cancellationToken).ConfigureAwait(false);
// Create a simple interval tree for simplification spans.
var spansTree = new SimpleIntervalTree <TextSpan>(TextSpanIntervalIntrospector.Instance, spans);
Func <SyntaxNodeOrToken, bool> isInSpan = nodeOrToken =>
spansTree.GetOverlappingIntervals(nodeOrToken.FullSpan.Start, nodeOrToken.FullSpan.Length).Any();
var nodesWithExplicitNamespaces = root.DescendantNodesAndSelf().Where(n => isInSpan(n) && GetExplicitNamespaceSymbol(n, model) != null).ToList();
var namespacesToAdd = new HashSet <INamespaceSymbol>();
namespacesToAdd.AddRange(nodesWithExplicitNamespaces.Select(
n => GetExplicitNamespaceSymbol(n, model)));
var generator = SyntaxGenerator.GetGenerator(document);
var imports = namespacesToAdd.Select(ns => generator.NamespaceImportDeclaration(ns.ToDisplayString()).WithAdditionalAnnotations(Simplifier.Annotation))
.ToArray();
// annotate these nodes so they get simplified later
var newRoot = root.ReplaceNodes(
nodesWithExplicitNamespaces,
(o, r) => r.WithAdditionalAnnotations(Simplifier.Annotation));
var placeSystemNamespaceFirst = options.GetOption(GenerationOptions.PlaceSystemNamespaceFirst, document.Project.Language);
var addImportsService = document.GetLanguageService <IAddImportsService>();
var finalRoot = addImportsService.AddImports(
model.Compilation, newRoot, newRoot, imports, placeSystemNamespaceFirst);
return(document.WithSyntaxRoot(finalRoot));
}
public async Task<Document> AddImportsAsync(
Document document, IEnumerable<TextSpan> spans,
OptionSet options, CancellationToken cancellationToken)
{
options = options ?? await document.GetOptionsAsync(cancellationToken).ConfigureAwait(false);
var model = await document.GetSemanticModelAsync(cancellationToken).ConfigureAwait(false);
var root = await model.SyntaxTree.GetRootAsync(cancellationToken).ConfigureAwait(false);
// Create a simple interval tree for simplification spans.
var spansTree = new SimpleIntervalTree<TextSpan>(TextSpanIntervalIntrospector.Instance, spans);
Func<SyntaxNodeOrToken, bool> isInSpan = nodeOrToken =>
spansTree.GetOverlappingIntervals(nodeOrToken.FullSpan.Start, nodeOrToken.FullSpan.Length).Any();
var nodesWithExplicitNamespaces = root.DescendantNodesAndSelf().Where(n => isInSpan(n) && GetExplicitNamespaceSymbol(n, model) != null).ToList();
var namespacesToAdd = new HashSet<INamespaceSymbol>();
namespacesToAdd.AddRange(nodesWithExplicitNamespaces.Select(
n => GetExplicitNamespaceSymbol(n, model)));
var generator = SyntaxGenerator.GetGenerator(document);
var imports = namespacesToAdd.Select(ns => generator.NamespaceImportDeclaration(ns.ToDisplayString()).WithAdditionalAnnotations(Simplifier.Annotation))
.ToArray();
// annotate these nodes so they get simplified later
var newRoot = root.ReplaceNodes(
nodesWithExplicitNamespaces,
(o, r) => r.WithAdditionalAnnotations(Simplifier.Annotation));
var placeSystemNamespaceFirst = options.GetOption(GenerationOptions.PlaceSystemNamespaceFirst, document.Project.Language);
var addImportsService = document.GetLanguageService<IAddImportsService>();
var finalRoot = addImportsService.AddImports(
model.Compilation, newRoot, newRoot, imports, placeSystemNamespaceFirst);
return document.WithSyntaxRoot(finalRoot);
}
private async Task <Document> ReduceAsyncInternal(
Document document,
List <TextSpan> spans,
OptionSet optionSet,
IEnumerable <AbstractReducer> reducers,
CancellationToken cancellationToken)
{
// Create a simple interval tree for simplification spans.
var spansTree = new SimpleIntervalTree <TextSpan>(TextSpanIntervalIntrospector.Instance, spans);
Func <SyntaxNodeOrToken, bool> isNodeOrTokenOutsideSimplifySpans = (nodeOrToken) =>
!spansTree.GetOverlappingIntervals(nodeOrToken.FullSpan.Start, nodeOrToken.FullSpan.Length).Any();
var semanticModel = await document.GetSemanticModelAsync(cancellationToken).ConfigureAwait(false);
var root = semanticModel.SyntaxTree.GetRoot(cancellationToken);
// prep namespace imports marked for simplification
var removeIfUnusedAnnotation = new SyntaxAnnotation();
var originalRoot = root;
root = this.PrepareNamespaceImportsForRemovalIfUnused(document, root, removeIfUnusedAnnotation, isNodeOrTokenOutsideSimplifySpans);
var hasImportsToSimplify = root != originalRoot;
if (hasImportsToSimplify)
{
document = document.WithSyntaxRoot(root);
semanticModel = await document.GetSemanticModelAsync(cancellationToken).ConfigureAwait(false);
root = semanticModel.SyntaxTree.GetRoot(cancellationToken);
}
// Get the list of syntax nodes and tokens that need to be reduced.
var nodesAndTokensToReduce = this.GetNodesAndTokensToReduce(root, isNodeOrTokenOutsideSimplifySpans);
if (nodesAndTokensToReduce.Any())
{
if (reducers == null)
{
reducers = this.GetReducers();
}
var reducedNodesMap = new ConcurrentDictionary <SyntaxNode, SyntaxNode>();
var reducedTokensMap = new ConcurrentDictionary <SyntaxToken, SyntaxToken>();
// Reduce all the nodesAndTokensToReduce using the given reducers/rewriters and
// store the reduced nodes and/or tokens in the reduced nodes/tokens maps.
// Note that this method doesn't update the original syntax tree.
await this.ReduceAsync(document, root, nodesAndTokensToReduce, reducers, optionSet, semanticModel, reducedNodesMap, reducedTokensMap, cancellationToken).ConfigureAwait(false);
if (reducedNodesMap.Any() || reducedTokensMap.Any())
{
// Update the syntax tree with reduced nodes/tokens.
root = root.ReplaceSyntax(
nodes: reducedNodesMap.Keys,
computeReplacementNode: (o, n) => TransformReducedNode(reducedNodesMap[o], n),
tokens: reducedTokensMap.Keys,
computeReplacementToken: (o, n) => reducedTokensMap[o],
trivia: SpecializedCollections.EmptyEnumerable <SyntaxTrivia>(),
computeReplacementTrivia: null);
document = document.WithSyntaxRoot(root);
}
}
if (hasImportsToSimplify)
{
// remove any unused namespace imports that were marked for simplification
document = await this.RemoveUnusedNamespaceImportsAsync(document, removeIfUnusedAnnotation, cancellationToken).ConfigureAwait(false);
}
return(document);
}