public void ConstructorSetsPropertyValue() {
// Arrange
IEnumerable<SyntaxTreeNode> contents = new SyntaxTreeNode[0];
// Act
Block block = new Block(BlockType.Expression, contents);
// Assert
Assert.AreEqual(BlockType.Expression, block.Type);
Assert.AreSame(contents, block.Children);
}
private string ParseNode(SyntaxTreeNode node, int tabLevel = -1)
{
var block = node as Block;
var tabs = new string('\t', tabLevel + 1);
if (block == null)
return string.Format("{0}<{1}>", tabs, node);
string children = string.Join("\r\n", block.Children.Select(x => ParseNode(x, tabLevel + 1)));
return string.Format("{0}<{1}>\r\n{2}\r\n{0}</{1}>", tabs, block, children);
}
public void ConstructorSetsParentPointerOnChildren() {
// Arrange
SyntaxTreeNode[] contents = new SyntaxTreeNode[2] {
new Block(BlockType.Comment, new SyntaxTreeNode[0]),
new CodeSpan(String.Empty)
};
// Act
Block block = new Block(BlockType.Expression, contents);
// Assert
Assert.AreSame(block, contents[0].Parent);
Assert.AreSame(block, contents[1].Parent);
}
private bool IsLiteralAttributeValue(SyntaxTreeNode node)
{
if (node.IsBlock)
{
return false;
}
Span span = node as Span;
Debug.Assert(span != null);
LiteralAttributeCodeGenerator litGen = span.CodeGenerator as LiteralAttributeCodeGenerator;
return span != null &&
((litGen != null && litGen.ValueGenerator == null) ||
span.CodeGenerator == SpanCodeGenerator.Null ||
span.CodeGenerator is MarkupCodeGenerator);
}
protected virtual void ParseSyntaxTreeNode(SyntaxTreeNode node, TextWriter output)
{
if (node == null) return;
// Ignore the @ symbol - that's Razor's business
if (node is TransitionSpan) return;
// Explicitly ignore @model and @inherits spans as part
// of the transition from static to dynamic typing
if (node is ModelSpan) return;
if (node is InheritsSpan) return;
if (node is MetaCodeSpan) return;
// Explicitly support these types of spans:
if (VisitBlock(node as Block, output)) return;
if (VisitMarkupSpan(node as MarkupSpan, output)) return;
if (VisitCodeSpan(node as CodeSpan, output)) return;
// Emit a warning for any span that wasn't handled above
Trace.WriteLine(string.Format("Ignoring {0}...", node));
}
public override bool EquivalentTo(SyntaxTreeNode node)
{
Block other = node as Block;
if (other == null || other.Type != Type)
{
return false;
}
return Enumerable.SequenceEqual(Children, other.Children, new EquivalenceComparer());
}
/// <summary> /// Determines if the specified node is equivalent to this node /// </summary> /// <param name="node">The node to compare this node with</param> /// <returns> /// true if the provided node has all the same content and metadata, though the specific quantity and type of symbols may be different. /// </returns> public abstract bool EquivalentTo(SyntaxTreeNode node);
private static void AddNullActualError(ErrorCollector collector, SyntaxTreeNode actual, SyntaxTreeNode expected)
{
collector.AddError("{0} - FAILED :: Actual: << Null >>", expected);
}
/// <summary> /// Determines if the specified node is equivalent to this node /// </summary> /// <param name="node">The node to compare this node with</param> /// <returns> /// true if the provided node has all the same content and metadata, though the specific quantity and type of symbols may be different. /// </returns> public abstract bool EquivalentTo(SyntaxTreeNode node);
/// <summary>
/// Checks that the specified span is equivalent to the other in that it has the same start point and content.
/// </summary>
public override bool EquivalentTo(SyntaxTreeNode node)
{
Span other = node as Span;
return other != null &&
Kind.Equals(other.Kind) &&
Start.Equals(other.Start) &&
EditHandler.Equals(other.EditHandler) &&
String.Equals(other.Content, Content, StringComparison.Ordinal);
}
private static void EvaluateSyntaxTreeNode(ErrorCollector collector, SyntaxTreeNode actual, SyntaxTreeNode expected)
{
if (actual == null)
{
AddNullActualError(collector, actual, expected);
}
if (actual.IsBlock != expected.IsBlock)
{
AddMismatchError(collector, actual, expected);
}
else
{
if (expected.IsBlock)
{
EvaluateBlock(collector, (Block)actual, (Block)expected);
}
else
{
EvaluateSpan(collector, (Span)actual, (Span)expected);
}
}
}
private void WriteNode(int indent, SyntaxTreeNode node)
{
string content = node.ToString().Replace("\r", "\\r")
.Replace("\n", "\\n")
.Replace("{", "{{")
.Replace("}", "}}");
if (indent > 0)
{
content = new String('.', indent * 2) + content;
}
WriteTraceLine(content);
Block block = node as Block;
if (block != null)
{
foreach (SyntaxTreeNode child in block.Children)
{
WriteNode(indent + 1, child);
}
}
}
internal void ParseSyntaxTreeNode(SyntaxTreeNode node, TextWriter output)
{
if (node == null) return; // sanity.
if (node is TransitionSpan) return; // ignore the @ symbol.
// ignore @model and @inherits as part of the transition from static to dynamic typing.
if (node is ModelSpan) return;
if (node is InheritsSpan) return;
if (node is MetaCodeSpan) return;
// explicitly support these types of node
if (VisitBlock(node as Block, output)) return;
if (VisitMarkupSpan(node as MarkupSpan, output)) return;
if (VisitCodeSpan(node as CodeSpan, output)) return;
log.DebugFormat(NODE_IGNORED, node); // emit a warning for any node that wasn't handled above.
}
public string Visualize(SyntaxTreeNode node)
{
return ParseNode(node);
}
private bool IsMultiLineBlock(SyntaxTreeNode node)
{
var block = node as Block;
// will be true for markup spans as well, but they are handled elsewhere
if (!node.IsBlock || block == null || !block.Children.Any()) return false;
return block.Children.First().Start.LineIndex != block.Children.Last().Start.LineIndex;
}
private static void AddPassedMessage(ErrorCollector collector, SyntaxTreeNode expected)
{
collector.AddMessage("{0} - PASSED", expected);
}
private static void AddMismatchError(ErrorCollector collector, SyntaxTreeNode actual, SyntaxTreeNode expected)
{
collector.AddError("{0} - FAILED :: Actual: {1}", expected, actual);
}
private static void WriteTree(SyntaxTreeNode node, StringBuilder treeBuilder, int depth = 0)
{
if (node == null)
{
return;
}
if (depth > 1)
{
WriteIndent(treeBuilder, depth);
}
if (depth > 0)
{
treeBuilder.Append("|-- ");
}
treeBuilder.AppendLine(ConvertEscapseSequences(node.ToString()));
if (node.IsBlock)
{
foreach (SyntaxTreeNode child in ((Block)node).Children)
{
WriteTree(child, treeBuilder, depth + 1);
}
}
}
private void RunUnterminatedBlockTest(string keyword, string expectedTerminator, BlockType blockType = BlockType.Statement, bool keywordIsMetaCode = false) {
const string blockBody = @"
' This block is not correctly terminated!";
IEnumerable<SyntaxTreeNode> expectedNodes = null;
if (keywordIsMetaCode) {
expectedNodes = new SyntaxTreeNode[] {
new MetaCodeSpan(keyword, hidden: false, acceptedCharacters: AcceptedCharacters.None),
new CodeSpan(blockBody)
};
}
else {
expectedNodes = new SyntaxTreeNode[] {
new CodeSpan(keyword + blockBody)
};
}
ParseBlockTest(keyword + blockBody,
new Block(blockType, expectedNodes),
new RazorError(String.Format(RazorResources.ParseError_BlockNotTerminated, keyword, expectedTerminator),
SourceLocation.Zero));
}
