public BlockBuilder(Block original)
{
Type = original.Type;
Children = new List<SyntaxTreeNode>(original.Children);
Name = original.Name;
CodeGenerator = original.CodeGenerator;
}
public GeneratorResults(Block document,
IList<RazorError> parserErrors,
CodeCompileUnit generatedCode,
IDictionary<int, GeneratedCodeMapping> designTimeLineMappings)
: this(parserErrors.Count == 0, document, parserErrors, generatedCode, designTimeLineMappings)
{
}
public override void GenerateEndBlockCode(Block target, CodeGeneratorContext context)
{
string endBlock = context.BuildCodeString(cw =>
{
if (context.ExpressionRenderingMode == ExpressionRenderingMode.WriteToOutput)
{
if (!context.Host.DesignTimeMode)
{
cw.WriteEndMethodInvoke();
}
cw.WriteEndStatement();
}
else
{
cw.WriteLineContinuation();
}
});
context.MarkEndOfGeneratedCode();
context.BufferStatementFragment(endBlock);
context.FlushBufferedStatement();
if (context.Host.EnableInstrumentation && context.ExpressionRenderingMode == ExpressionRenderingMode.WriteToOutput)
{
Span contentSpan = target.Children
.OfType<Span>()
.Where(s => s.Kind == SpanKind.Code || s.Kind == SpanKind.Markup)
.FirstOrDefault();
if (contentSpan != null)
{
context.AddContextCall(contentSpan, context.Host.GeneratedClassContext.EndContextMethodName, false);
}
}
}
internal static void WriteDebugTree(string sourceFile, Block document, PartialParseResult result, TextChange change, RazorEditorParser parser, bool treeStructureChanged)
{
if (!OutputDebuggingEnabled)
{
return;
}
RunTask(() =>
{
string outputFileName = Normalize(sourceFile) + "_tree";
string outputPath = Path.Combine(Path.GetDirectoryName(sourceFile), outputFileName);
var treeBuilder = new StringBuilder();
WriteTree(document, treeBuilder);
treeBuilder.AppendLine();
treeBuilder.AppendFormat(CultureInfo.CurrentCulture, "Last Change: {0}", change);
treeBuilder.AppendLine();
treeBuilder.AppendFormat(CultureInfo.CurrentCulture, "Normalized To: {0}", change.Normalize());
treeBuilder.AppendLine();
treeBuilder.AppendFormat(CultureInfo.CurrentCulture, "Partial Parse Result: {0}", result);
treeBuilder.AppendLine();
if (result.HasFlag(PartialParseResult.Rejected))
{
treeBuilder.AppendFormat(CultureInfo.CurrentCulture, "Tree Structure Changed: {0}", treeStructureChanged);
treeBuilder.AppendLine();
}
if (result.HasFlag(PartialParseResult.AutoCompleteBlock))
{
treeBuilder.AppendFormat(CultureInfo.CurrentCulture, "Auto Complete Insert String: \"{0}\"", parser.GetAutoCompleteString());
treeBuilder.AppendLine();
}
File.WriteAllText(outputPath, treeBuilder.ToString());
});
}
public override void GenerateStartBlockCode(Block target, CodeGeneratorContext context)
{
if (context.Host.DesignTimeMode)
{
return; // Don't generate anything!
}
context.FlushBufferedStatement();
context.AddStatement(context.BuildCodeString(cw =>
{
if (!String.IsNullOrEmpty(context.TargetWriterName))
{
cw.WriteStartMethodInvoke(context.Host.GeneratedClassContext.WriteAttributeToMethodName);
cw.WriteSnippet(context.TargetWriterName);
cw.WriteParameterSeparator();
}
else
{
cw.WriteStartMethodInvoke(context.Host.GeneratedClassContext.WriteAttributeMethodName);
}
cw.WriteStringLiteral(Name);
cw.WriteParameterSeparator();
cw.WriteLocationTaggedString(Prefix);
cw.WriteParameterSeparator();
cw.WriteLocationTaggedString(Suffix);
// In VB, we need a line continuation
cw.WriteLineContinuation();
}));
}
public override void VisitBlock(Block block)
{
if (CanRewrite(block))
{
SyntaxTreeNode newNode = RewriteBlock(_blocks.Peek(), block);
if (newNode != null)
{
_blocks.Peek().Children.Add(newNode);
}
}
else
{
// Not rewritable.
BlockBuilder builder = new BlockBuilder(block);
builder.Children.Clear();
_blocks.Push(builder);
base.VisitBlock(block);
Debug.Assert(ReferenceEquals(builder, _blocks.Peek()));
if (_blocks.Count > 1)
{
_blocks.Pop();
_blocks.Peek().Children.Add(builder.Build());
}
}
}
public override void GenerateStartBlockCode(Block target, CodeGeneratorContext context)
{
_writer = context.CreateCodeWriter();
string prefix = context.BuildCodeString(
cw => cw.WriteHelperHeaderPrefix(context.Host.GeneratedClassContext.TemplateTypeName, context.Host.StaticHelpers));
_writer.WriteLinePragma(
context.GenerateLinePragma(Signature.Location, prefix.Length, Signature.Value.Length));
_writer.WriteSnippet(prefix);
_writer.WriteSnippet(Signature);
if (HeaderComplete)
{
_writer.WriteHelperHeaderSuffix(context.Host.GeneratedClassContext.TemplateTypeName);
}
_writer.WriteLinePragma(null);
if (HeaderComplete)
{
_writer.WriteReturn();
_writer.WriteStartConstructor(context.Host.GeneratedClassContext.TemplateTypeName);
_writer.WriteStartLambdaDelegate(HelperWriterName);
}
_statementCollectorToken = context.ChangeStatementCollector(AddStatementToHelper);
_oldWriter = context.TargetWriterName;
context.TargetWriterName = HelperWriterName;
}
public override void GenerateStartBlockCode(Block target, CodeGeneratorContext context)
{
// Flush the buffered statement since we're interrupting it with a comment.
if (!String.IsNullOrEmpty(context.CurrentBufferedStatement))
{
context.MarkEndOfGeneratedCode();
context.BufferStatementFragment(context.BuildCodeString(cw => cw.WriteLineContinuation()));
}
context.FlushBufferedStatement();
}
protected GeneratorResults(bool success,
Block document,
IList<RazorError> parserErrors,
CodeCompileUnit generatedCode,
IDictionary<int, GeneratedCodeMapping> designTimeLineMappings)
: base(success, document, parserErrors)
{
GeneratedCode = generatedCode;
DesignTimeLineMappings = designTimeLineMappings;
}
public override void GenerateEndBlockCode(Block target, CodeGeneratorContext context)
{
string startBlock = context.BuildCodeString(cw =>
{
cw.WriteEndLambdaDelegate();
cw.WriteEndMethodInvoke();
cw.WriteEndStatement();
});
context.AddStatement(startBlock);
}
public override void GenerateStartBlockCode(Block target, CodeGeneratorContext context)
{
string startBlock = context.BuildCodeString(cw =>
{
cw.WriteStartMethodInvoke(context.Host.GeneratedClassContext.DefineSectionMethodName);
cw.WriteStringLiteral(SectionName);
cw.WriteParameterSeparator();
cw.WriteStartLambdaDelegate();
});
context.AddStatement(startBlock);
}
protected override SyntaxTreeNode RewriteBlock(BlockBuilder parent, Block block)
{
// Collect the content of this node
string content = String.Concat(block.Children.Cast<Span>().Select(s => s.Content));
// Create a new span containing this content
SpanBuilder span = new SpanBuilder();
span.EditHandler = new SpanEditHandler(HtmlTokenizer.Tokenize);
FillSpan(span, block.Children.Cast<Span>().First().Start, content);
return span.Build();
}
public override void GenerateEndBlockCode(Block target, CodeGeneratorContext context)
{
string generatedCode = context.BuildCodeString(cw =>
{
cw.WriteEndLambdaDelegate();
cw.WriteEndConstructor();
cw.WriteEndLambdaExpression();
});
context.BufferStatementFragment(generatedCode);
context.TargetWriterName = _oldTargetWriter;
}
public override void GenerateEndBlockCode(Block target, CodeGeneratorContext context)
{
if (context.Host.DesignTimeMode)
{
return; // Don't generate anything!
}
context.FlushBufferedStatement();
context.AddStatement(context.BuildCodeString(cw =>
{
cw.WriteEndMethodInvoke();
cw.WriteEndStatement();
}));
}
public override void GenerateStartBlockCode(Block target, CodeGeneratorContext context)
{
string generatedCode = context.BuildCodeString(cw =>
{
cw.WriteStartLambdaExpression(ItemParameterName);
cw.WriteStartConstructor(context.Host.GeneratedClassContext.TemplateTypeName);
cw.WriteStartLambdaDelegate(TemplateWriterName);
});
context.MarkEndOfGeneratedCode();
context.BufferStatementFragment(generatedCode);
context.FlushBufferedStatement();
_oldTargetWriter = context.TargetWriterName;
context.TargetWriterName = TemplateWriterName;
}
public override void GenerateStartBlockCode(Block target, CodeGeneratorContext context)
{
if (context.Host.DesignTimeMode)
{
return; // Don't generate anything!
}
// What kind of block is nested within
string generatedCode;
Block child = target.Children.Where(n => n.IsBlock).Cast<Block>().FirstOrDefault();
if (child != null && child.Type == BlockType.Expression)
{
_isExpression = true;
generatedCode = context.BuildCodeString(cw =>
{
cw.WriteParameterSeparator();
cw.WriteStartMethodInvoke("Tuple.Create");
cw.WriteLocationTaggedString(Prefix);
cw.WriteParameterSeparator();
cw.WriteStartMethodInvoke("Tuple.Create", "System.Object", "System.Int32");
});
_oldRenderingMode = context.ExpressionRenderingMode;
context.ExpressionRenderingMode = ExpressionRenderingMode.InjectCode;
}
else
{
generatedCode = context.BuildCodeString(cw =>
{
cw.WriteParameterSeparator();
cw.WriteStartMethodInvoke("Tuple.Create");
cw.WriteLocationTaggedString(Prefix);
cw.WriteParameterSeparator();
cw.WriteStartMethodInvoke("Tuple.Create", "System.Object", "System.Int32");
cw.WriteStartConstructor(context.Host.GeneratedClassContext.TemplateTypeName);
cw.WriteStartLambdaDelegate(ValueWriterName);
});
}
context.MarkEndOfGeneratedCode();
context.BufferStatementFragment(generatedCode);
_oldTargetWriter = context.TargetWriterName;
context.TargetWriterName = ValueWriterName;
}
public override void GenerateEndBlockCode(Block target, CodeGeneratorContext context)
{
if (context.Host.DesignTimeMode)
{
return; // Don't generate anything!
}
string generatedCode;
if (_isExpression)
{
generatedCode = context.BuildCodeString(cw =>
{
cw.WriteParameterSeparator();
cw.WriteSnippet(ValueStart.AbsoluteIndex.ToString(CultureInfo.CurrentCulture));
cw.WriteEndMethodInvoke();
cw.WriteParameterSeparator();
// literal: false - This attribute value is not a literal value, it is dynamically generated
cw.WriteBooleanLiteral(false);
cw.WriteEndMethodInvoke();
cw.WriteLineContinuation();
});
context.ExpressionRenderingMode = _oldRenderingMode;
}
else
{
generatedCode = context.BuildCodeString(cw =>
{
cw.WriteEndLambdaDelegate();
cw.WriteEndConstructor();
cw.WriteParameterSeparator();
cw.WriteSnippet(ValueStart.AbsoluteIndex.ToString(CultureInfo.CurrentCulture));
cw.WriteEndMethodInvoke();
cw.WriteParameterSeparator();
// literal: false - This attribute value is not a literal value, it is dynamically generated
cw.WriteBooleanLiteral(false);
cw.WriteEndMethodInvoke();
cw.WriteLineContinuation();
});
}
context.AddStatement(generatedCode);
context.TargetWriterName = _oldTargetWriter;
}
public override void GenerateEndBlockCode(Block target, CodeGeneratorContext context)
{
_statementCollectorToken.Dispose();
if (HeaderComplete)
{
_writer.WriteEndLambdaDelegate();
_writer.WriteEndConstructor();
_writer.WriteEndStatement();
}
if (Footer != null && !String.IsNullOrEmpty(Footer.Value))
{
_writer.WriteLinePragma(
context.GenerateLinePragma(Footer.Location, 0, Footer.Value.Length));
_writer.WriteSnippet(Footer);
_writer.WriteLinePragma();
}
_writer.WriteHelperTrailer();
context.GeneratedClass.Members.Add(new CodeSnippetTypeMember(_writer.Content));
context.TargetWriterName = _oldWriter;
}
public override void GenerateStartBlockCode(Block target, CodeGeneratorContext context)
{
if (context.Host.EnableInstrumentation && context.ExpressionRenderingMode == ExpressionRenderingMode.WriteToOutput)
{
Span contentSpan = target.Children
.OfType<Span>()
.Where(s => s.Kind == SpanKind.Code || s.Kind == SpanKind.Markup)
.FirstOrDefault();
if (contentSpan != null)
{
context.AddContextCall(contentSpan, context.Host.GeneratedClassContext.BeginContextMethodName, false);
}
}
string writeInvocation = context.BuildCodeString(cw =>
{
if (context.Host.DesignTimeMode)
{
context.EnsureExpressionHelperVariable();
cw.WriteStartAssignment("__o");
}
else if (context.ExpressionRenderingMode == ExpressionRenderingMode.WriteToOutput)
{
if (!String.IsNullOrEmpty(context.TargetWriterName))
{
cw.WriteStartMethodInvoke(context.Host.GeneratedClassContext.WriteToMethodName);
cw.WriteSnippet(context.TargetWriterName);
cw.WriteParameterSeparator();
}
else
{
cw.WriteStartMethodInvoke(context.Host.GeneratedClassContext.WriteMethodName);
}
}
});
context.BufferStatementFragment(writeInvocation);
context.MarkStartOfGeneratedCode();
}
internal static bool TreesAreDifferent(Block leftTree, Block rightTree, IEnumerable<TextChange> changes, CancellationToken cancelToken)
{
// Apply all the pending changes to the original tree
// PERF: If this becomes a bottleneck, we can probably do it the other way around,
// i.e. visit the tree and find applicable changes for each node.
foreach (TextChange change in changes)
{
cancelToken.ThrowIfCancellationRequested();
Span changeOwner = leftTree.LocateOwner(change);
// Apply the change to the tree
if (changeOwner == null)
{
return true;
}
EditResult result = changeOwner.EditHandler.ApplyChange(changeOwner, change, force: true);
changeOwner.ReplaceWith(result.EditedSpan);
}
// Now compare the trees
bool treesDifferent = !leftTree.EquivalentTo(rightTree);
return treesDifferent;
}
//public override void VisitBlock(Block block)
//{
// BlockBuilder parent = null;
// if (_blocks.Count > 0)
// {
// parent = _blocks.Peek();
// }
// BlockBuilder newBlock = new BlockBuilder(block);
// newBlock.Children.Clear();
// _blocks.Push(newBlock);
// if (block.Type == BlockType.Expression && parent != null)
// {
// VisitExpressionBlock(block, parent);
// }
// else
// {
// base.VisitBlock(block);
// }
// if (_blocks.Count > 1)
// {
// parent.Children.Add(_blocks.Pop().Build());
// }
//}
//public override void VisitSpan(Span span)
//{
// Debug.Assert(_blocks.Count > 0);
// _blocks.Peek().Children.Add(span);
//}
protected override SyntaxTreeNode RewriteBlock(BlockBuilder parent, Block block)
{
BlockBuilder newBlock = new BlockBuilder(block);
newBlock.Children.Clear();
Span ws = block.Children.FirstOrDefault() as Span;
IEnumerable<SyntaxTreeNode> newNodes = block.Children;
if (ws.Content.All(Char.IsWhiteSpace))
{
// Add this node to the parent
SpanBuilder builder = new SpanBuilder(ws);
builder.ClearSymbols();
FillSpan(builder, ws.Start, ws.Content);
parent.Children.Add(builder.Build());
// Remove the old whitespace node
newNodes = block.Children.Skip(1);
}
foreach (SyntaxTreeNode node in newNodes)
{
newBlock.Children.Add(node);
}
return newBlock.Build();
}
public virtual void GenerateStartBlockCode(Block target, CodeGeneratorContext context)
{
}
protected ParserResults(bool success, Block document, IList<RazorError> errors)
{
Success = success;
Document = document;
ParserErrors = errors ?? new List<RazorError>();
}
public ParserResults(Block document, IList<RazorError> parserErrors)
: this(parserErrors == null || parserErrors.Count == 0, document, parserErrors)
{
}
protected override bool CanRewrite(Block block)
{
return block.Type == BlockType.Expression && Parent != null;
}
public override void VisitEndBlock(Block block)
{
block.CodeGenerator.GenerateEndBlockCode(block, Context);
}
protected virtual SyntaxTreeNode RewriteBlock(BlockBuilder parent, Block block)
{
throw new NotImplementedException();
}
protected virtual bool CanRewrite(Block block)
{
return false;
}
public void GenerateEndBlockCode(Block target, CodeGeneratorContext context)
{
}
public virtual Block Rewrite(Block input)
{
input.Accept(this);
Debug.Assert(_blocks.Count == 1);
return _blocks.Pop().Build();
}
