/// <summary>
/// Initializes a new instance of the <see cref="WithTwoChildren"/> class from
/// the specified binary reader.
/// </summary>
/// <param name="reader">The binary reader with which to deserialize the object.</param>
/// <param name="version">The file version of the data being read.</param>
private WithTwoChildren(BinaryReader reader, Int32 version)
: base(reader, version)
{
this.child0 = reader.ReadSyntaxNode(version);
ChangeParent(this.child0);
this.child1 = reader.ReadSyntaxNode(version);
ChangeParent(this.child1);
}
/// <summary>
/// Initializes a new instance of the <see cref="SkippedTokensTriviaSyntax"/> class.
/// </summary>
/// <param name="tokens">The node that represents the skipped tokens.</param>
public SkippedTokensTriviaSyntax(
SyntaxNode tokens)
: base(SyntaxKind.SkippedTokensTrivia)
{
this.Tokens = tokens;
ChangeParent(tokens);
this.SlotCount = 1;
UpdateIsMissing();
}
/// <summary>
/// Initializes a new instance of the <see cref="WithTwoChildren"/> class.
/// </summary>
/// <param name="child0">The list's first child.</param>
/// <param name="child1">The list's second child.</param>
internal WithTwoChildren(SyntaxNode child0, SyntaxNode child1)
{
SlotCount = 2;
this.child0 = child0;
ChangeParent(child0);
this.child1 = child1;
ChangeParent(child1);
}
/// <summary>
/// Initializes a new instance of the <see cref="WithThreeChildren"/> class.
/// </summary>
/// <param name="child0">The list's first child.</param>
/// <param name="child1">The list's second child.</param>
/// <param name="child2">The list's third child.</param>
internal WithThreeChildren(SyntaxNode child0, SyntaxNode child1, SyntaxNode child2)
{
SlotCount = 3;
this.child0 = child0;
ChangeParent(child0);
this.child1 = child1;
ChangeParent(child1);
this.child2 = child2;
ChangeParent(child2);
}
/// <summary>
/// Concatenates two syntax nodes into a single list.
/// </summary>
/// <param name="left">The left node.</param>
/// <param name="right">The right node.</param>
/// <returns>A node that represents the concatenation of the specified nodes.</returns>
internal static SyntaxNode Concat(SyntaxNode left, SyntaxNode right)
{
if (left == null)
return right;
if (right == null)
return left;
var temp = default(ArrayElement<SyntaxNode>[]);
var leftList = left as SyntaxList;
var rightList = right as SyntaxList;
if (leftList != null)
{
if (rightList != null)
{
temp = new ArrayElement<SyntaxNode>[left.SlotCount + right.SlotCount];
leftList.CopyTo(temp, 0);
rightList.CopyTo(temp, left.SlotCount);
return List(temp);
}
temp = new ArrayElement<SyntaxNode>[left.SlotCount + 1];
leftList.CopyTo(temp, 0);
temp[left.SlotCount].Value = right;
return List(temp);
}
if (rightList != null)
{
temp = new ArrayElement<SyntaxNode>[rightList.SlotCount + 1];
temp[0].Value = left;
rightList.CopyTo(temp, 1);
return List(temp);
}
return List(left, right);
}
/// <summary>
/// Changes the specified node's parent to this node.
/// </summary>
/// <param name="node">The node to update.</param>
protected void ChangeParent(SyntaxNode node)
{
if (node == null || node.Parent == this)
return;
if (node.Parent != null)
node.Parent.IsStale = true;
node.Parent = this;
}
/// <summary>
/// Changes the node's leading and trailing trivia.
/// </summary>
/// <param name="leading">The node's leading trivia.</param>
/// <param name="trailing">The node's trailing trivia.</param>
internal virtual void ChangeTrivia(SyntaxNode leading, SyntaxNode trailing)
{
var firstToken = GetFirstToken();
if (firstToken != null)
firstToken.ChangeLeadingTrivia(leading);
var lastToken = GetLastToken();
if (lastToken != null)
lastToken.ChangeTrailingTrivia(trailing);
}
/// <summary>
/// Changes the node's trailing trivia.
/// </summary>
/// <param name="trivia">The node's trailing trivia.</param>
internal virtual void ChangeTrailingTrivia(SyntaxNode trivia)
{
var lastToken = GetLastToken();
if (lastToken != null)
lastToken.ChangeTrailingTrivia(trivia);
}
/// <summary>
/// Changes the node's leading trivia.
/// </summary>
/// <param name="trivia">The node's leading trivia.</param>
internal virtual void ChangeLeadingTrivia(SyntaxNode trivia)
{
var firstToken = GetFirstToken();
if (firstToken != null)
firstToken.ChangeLeadingTrivia(trivia);
}
/// <summary>
/// Visits the specified syntax node.
/// </summary>
/// <param name="node">The node to visit.</param>
/// <returns>A node which should replace the visited node, or a reference to the visited node
/// itself if no changes were made.</returns>
public virtual SyntaxNode VisitSyntaxNode(SyntaxNode node)
{
return node;
}
/// <summary>
/// Styles the specified node.
/// </summary>
/// <param name="node">The node to style.</param>
/// <param name="type">The classification type to apply to the node.</param>
/// <param name="withLeadingTrivia">A value indicating whether to style the node's leading trivia.</param>
/// <param name="withTrailingTrivia">A value indicating whether to style the node's trailing trivia.</param>
private void Style(SyntaxNode node, IClassificationType type,
Boolean withLeadingTrivia = false,
Boolean withTrailingTrivia = false)
{
if (node == null || node.IsMissing || type == null)
return;
var start = node.Position + (withLeadingTrivia ? 0 : node.GetLeadingTriviaWidth());
var width = node.FullWidth - (
(withLeadingTrivia ? 0 : node.GetLeadingTriviaWidth()) +
(withTrailingTrivia ? 0 : node.GetTrailingTriviaWidth()));
classifier(start, width, type, node.Kind);
}
/// <summary>
/// Creates a list with a single child.
/// </summary>
/// <param name="child">The list's child.</param>
/// <returns>The list that was created.</returns>
internal static SyntaxNode List(SyntaxNode child)
{
return child;
}
/// <summary>
/// Creates a list from the specified array.
/// </summary>
/// <param name="nodes">The array of nodes from which to create the list.</param>
/// <param name="count">The number of nodes in the array to copy into the created list.</param>
/// <returns>The list that was created.</returns>
internal static SyntaxList List(SyntaxNode[] nodes, Int32 count)
{
var array = new ArrayElement<SyntaxNode>[count];
for (int i = 0; i < count; i++)
array[i].Value = nodes[i];
return List(array);
}
/// <summary>
/// Creates a list from the specified array.
/// </summary>
/// <param name="nodes">The array of nodes from which to create the list.</param>
/// <returns>The list that was created.</returns>
internal static SyntaxList List(SyntaxNode[] nodes)
{
return List(nodes, nodes.Length);
}
/// <summary>
/// Creates a list with three children.
/// </summary>
/// <param name="child0">The list's first child.</param>
/// <param name="child1">The list's second child.</param>
/// <param name="child2">The list's third child.</param>
/// <returns>The list that was created.</returns>
internal static WithThreeChildren List(SyntaxNode child0, SyntaxNode child1, SyntaxNode child2)
{
return new WithThreeChildren(child0, child1, child2);
}
/// <summary>
/// Gets a collection containing the specified trivia.
/// </summary>
private IEnumerable<SyntaxNode> DescendIntoTrivia(SyntaxNode trivia)
{
if (trivia.IsList)
{
for (int i = 0; i < trivia.SlotCount; i++)
{
var trivium = trivia.GetSlot(i);
if (trivium != null)
yield return trivium;
}
}
else
{
yield return trivia;
}
}
/// <summary>
/// Serializes a <see cref="SyntaxNode"/> instance to
/// the specified stream.
/// </summary>
/// <param name="writer">The binary writer with which to serialize the object.</param>
/// <param name="node">The syntax node to serialize.</param>
/// <param name="version">The file version of the data being written.</param>
public static void ToStream(BinaryWriter writer, SyntaxNode node, Int32 version)
{
Contract.Require(writer, nameof(writer));
Contract.Require(node, nameof(node));
var typeID = default(Byte);
if (!idByType.TryGetValue(node.GetType(), out typeID))
throw new InvalidOperationException(UvssStrings.UnrecognizedSyntaxNodeType.Format(node.GetType().Name));
writer.Write(typeID);
node.Serialize(writer, version);
}
/// <summary>
/// Creates a list with two children.
/// </summary>
/// <param name="child0">The list's first child.</param>
/// <param name="child1">The list's second child.</param>
/// <returns>The list that was created.</returns>
internal static WithTwoChildren List(SyntaxNode child0, SyntaxNode child1)
{
return new WithTwoChildren(child0, child1);
}
/// <summary>
/// Visits the specified syntax node.
/// </summary>
/// <param name="node">The syntax node to visit.</param>
public void Visit(SyntaxNode node)
{
if (node == null)
return;
if (node is SyntaxToken)
Visit(node.GetLeadingTrivia());
switch (node.Kind)
{
case SyntaxKind.SingleLineCommentTrivia:
case SyntaxKind.MultiLineCommentTrivia:
VisitCommentTrivia((StructurelessSyntaxTrivia)node);
break;
case SyntaxKind.NumberToken:
VisitNumber((SyntaxToken)node);
break;
case SyntaxKind.AnimationKeyword:
case SyntaxKind.AsKeyword:
case SyntaxKind.EventKeyword:
case SyntaxKind.HandledKeyword:
case SyntaxKind.ImportantKeyword:
case SyntaxKind.KeyframeKeyword:
case SyntaxKind.PlaySfxKeyword:
case SyntaxKind.PlayStoryboardKeyword:
case SyntaxKind.PropertyKeyword:
case SyntaxKind.SetHandledKeyword:
case SyntaxKind.SetKeyword:
case SyntaxKind.TargetKeyword:
case SyntaxKind.TransitionKeyword:
case SyntaxKind.TriggerKeyword:
VisitKeyword((SyntaxToken)node);
break;
case SyntaxKind.Selector:
VisitSelector((UvssSelectorSyntax)node);
break;
case SyntaxKind.SelectorPart:
case SyntaxKind.InvalidSelectorPart:
VisitSelectorPart((UvssSelectorPartBaseSyntax)node);
break;
case SyntaxKind.PseudoClass:
VisitPseudoClass((UvssPseudoClassSyntax)node);
break;
case SyntaxKind.Rule:
VisitRule((UvssRuleSyntax)node);
break;
case SyntaxKind.EventName:
VisitEventName((UvssEventNameSyntax)node);
break;
case SyntaxKind.PropertyName:
VisitPropertyName((UvssPropertyNameSyntax)node);
break;
case SyntaxKind.PropertyValueToken:
VisitPropertyValueToken((SyntaxToken)node);
break;
case SyntaxKind.Storyboard:
VisitStoryboard((UvssStoryboardSyntax)node);
break;
case SyntaxKind.StoryboardTarget:
VisitStoryboardTarget((UvssStoryboardTargetSyntax)node);
break;
case SyntaxKind.AnimationKeyframe:
VisitAnimationKeyframe((UvssAnimationKeyframeSyntax)node);
break;
case SyntaxKind.NavigationExpression:
VisitNavigationExpression((UvssNavigationExpressionSyntax)node);
break;
case SyntaxKind.UnknownDirective:
VisitUnknownDirective((UvssUnknownDirectiveSyntax)node);
break;
case SyntaxKind.CultureDirective:
VisitCultureDirective((UvssCultureDirectiveSyntax)node);
break;
}
for (int i = 0; i < node.SlotCount; i++)
{
var child = node.GetSlot(i);
if (child != null)
{
Visit(child);
}
}
if (node is SyntaxToken)
Visit(node.GetTrailingTrivia());
}
/// <summary>
/// Visits the specified node.
/// </summary>
/// <param name="node">The node to visit.</param>
/// <returns>A node which should replace the visited node, or a reference to the visited node
/// itself if no changes were made.</returns>
public virtual SyntaxNode Visit(SyntaxNode node)
{
return node?.Accept(this);
}
