public override void GenerateStartParentChunk(Block target, ChunkGeneratorContext context)
{
var chunk = context.ChunkTreeBuilder.StartParentChunk <DynamicCodeAttributeChunk>(target);
chunk.Start = ValueStart;
chunk.Prefix = Prefix;
}
public override void GenerateStartParentChunk(Block target, ChunkGeneratorContext context)
{
var chunk = context.ChunkTreeBuilder.StartParentChunk <CodeAttributeChunk>(target);
chunk.Attribute = Name;
chunk.Prefix = Prefix;
chunk.Suffix = Suffix;
}
public override void GenerateStartParentChunk(Block target, ChunkGeneratorContext context)
{
var chunk = context.ChunkTreeBuilder.StartParentChunk<CodeAttributeChunk>(target);
chunk.Attribute = Name;
chunk.Prefix = Prefix;
chunk.Suffix = Suffix;
}
/// <summary>
/// Starts the generation of a <see cref="TagHelperChunk"/>.
/// </summary>
/// <param name="target">
/// The <see cref="Block"/> responsible for this <see cref="TagHelperChunkGenerator"/>.
/// </param>
/// <param name="context">A <see cref="ChunkGeneratorContext"/> instance that contains information about
/// the current chunk generation process.</param>
public override void GenerateStartParentChunk(Block target, ChunkGeneratorContext context)
{
var tagHelperBlock = target as TagHelperBlock;
Debug.Assert(
tagHelperBlock != null,
$"A {nameof(TagHelperChunkGenerator)} must only be used with {nameof(TagHelperBlock)}s.");
var attributes = new List <TagHelperAttributeTracker>();
// We need to create a chunk generator to create chunks for each of the attributes.
var chunkGenerator = context.Host.CreateChunkGenerator(
context.ClassName,
context.RootNamespace,
context.SourceFile);
foreach (var attribute in tagHelperBlock.Attributes)
{
ParentChunk attributeChunkValue = null;
if (attribute.Value != null)
{
// Populates the chunk tree with chunks associated with attributes
attribute.Value.Accept(chunkGenerator);
var chunks = chunkGenerator.Context.ChunkTreeBuilder.Root.Children;
var first = chunks.FirstOrDefault();
attributeChunkValue = new ParentChunk
{
Association = first?.Association,
Children = chunks,
Start = first == null ? SourceLocation.Zero : first.Start
};
}
var attributeChunk = new TagHelperAttributeTracker(
attribute.Name,
attributeChunkValue,
attribute.ValueStyle);
attributes.Add(attributeChunk);
// Reset the chunk tree builder so we can build a new one for the next attribute
chunkGenerator.Context.ChunkTreeBuilder = new ChunkTreeBuilder();
}
var unprefixedTagName = tagHelperBlock.TagName.Substring(_tagHelperDescriptors.First().Prefix.Length);
context.ChunkTreeBuilder.StartParentChunk(
new TagHelperChunk(
unprefixedTagName,
tagHelperBlock.TagMode,
attributes,
_tagHelperDescriptors),
target,
topLevel: false);
}
public override void GenerateChunk(Span target, ChunkGeneratorContext context)
{
var ns = Namespace;
if (!string.IsNullOrEmpty(ns) && char.IsWhiteSpace(ns[0]))
{
ns = ns.Substring(1);
}
context.ChunkTreeBuilder.AddUsingChunk(ns, target);
}
private void EnsureContextInitialized()
{
if (_context == null)
{
_context = new ChunkGeneratorContext(Host,
ClassName,
RootNamespaceName,
SourceFileName,
GenerateLinePragmas);
Initialize(_context);
}
}
public override void GenerateChunk(Span target, ChunkGeneratorContext context)
{
var chunk = context.ChunkTreeBuilder.StartParentChunk <LiteralCodeAttributeChunk>(target);
chunk.Prefix = Prefix;
chunk.Value = Value;
if (ValueGenerator != null)
{
chunk.ValueLocation = ValueGenerator.Location;
ValueGenerator.Value.GenerateChunk(target, context);
chunk.ValueLocation = ValueGenerator.Location;
}
context.ChunkTreeBuilder.EndParentChunk();
}
public void RenderAttributeValue_RendersModelExpressionsCorrectly(
string modelExpressionType,
string propertyType,
string expectedValue)
{
// Arrange
var renderer = new MvcTagHelperAttributeValueCodeRenderer(
new GeneratedTagHelperAttributeContext
{
ModelExpressionTypeName = modelExpressionType,
CreateModelExpressionMethodName = "SomeMethod",
ModelExpressionProviderPropertyName = "Provider",
ViewDataPropertyName = "ViewData"
});
var attributeDescriptor = new TagHelperAttributeDescriptor
{
Name = "MyAttribute",
PropertyName = "SomeProperty",
TypeName = propertyType,
};
var writer = new CSharpCodeWriter();
var generatorContext = new ChunkGeneratorContext(
host: null,
className: string.Empty,
rootNamespace: string.Empty,
sourceFile: string.Empty,
shouldGenerateLinePragmas: true);
var errorSink = new ErrorSink();
var context = new CodeGeneratorContext(generatorContext, errorSink);
// Act
renderer.RenderAttributeValue(attributeDescriptor, writer, context,
(codeWriter) =>
{
codeWriter.Write("MyValue");
},
complexValue: false);
// Assert
Assert.Equal(expectedValue, writer.GenerateCode());
}
public virtual void GenerateStartParentChunk(Block target, ChunkGeneratorContext context)
{
}
public override void GenerateChunk(Span target, ChunkGeneratorContext context)
{
var injectChunk = new InjectChunk(TypeName, PropertyName);
context.ChunkTreeBuilder.AddChunk(injectChunk, target);
}
public void GenerateChunk(Span target, ChunkGeneratorContext context)
{
}
public void GenerateStartParentChunk(Block target, ChunkGeneratorContext context)
{
context.ChunkTreeBuilder.StartParentChunk <ExpressionBlockChunk>(target);
}
public override void GenerateStartParentChunk(Block target, ChunkGeneratorContext context)
{
var chunk = context.ChunkTreeBuilder.StartParentChunk <SectionChunk>(target);
chunk.Name = SectionName;
}
/// <summary>
/// Generates <see cref="RemoveTagHelperChunk"/>s.
/// </summary>
/// <param name="target">
/// The <see cref="Span"/> responsible for this <see cref="RemoveTagHelperChunkGenerator"/>.
/// </param>
/// <param name="context">A <see cref="ChunkGeneratorContext"/> instance that contains information about
/// the current chunk generation process.</param>
public override void GenerateChunk(Span target, ChunkGeneratorContext context)
{
context.ChunkTreeBuilder.AddRemoveTagHelperChunk(_lookupText, target);
}
public void GenerateChunk(Span target, ChunkGeneratorContext context)
{
context.ChunkTreeBuilder.AddExpressionChunk(target.Content, target);
}
private string GetBaseType(ChunkGeneratorContext context, string baseType)
protected virtual void Initialize(ChunkGeneratorContext context)
{
}
public void GenerateStartParentChunk(Block target, ChunkGeneratorContext context)
{
context.ChunkTreeBuilder.StartParentChunk<ExpressionBlockChunk>(target);
}
public override void GenerateChunk(Span target, ChunkGeneratorContext context)
{
context.ChunkTreeBuilder.AddSetBaseTypeChunk(BaseType, target);
}
public void GenerateChunk(Span target, ChunkGeneratorContext context)
{
}
public override void GenerateChunk(Span target, ChunkGeneratorContext context)
{
context.ChunkTreeBuilder.AddSetBaseTypeChunk(BaseType, target);
}
public override void GenerateStartParentChunk(Block target, ChunkGeneratorContext context)
{
var chunk = context.ChunkTreeBuilder.StartParentChunk<SectionChunk>(target);
chunk.Name = SectionName;
}
public override void GenerateChunk(Span target, ChunkGeneratorContext context)
{
context.ChunkTreeBuilder.AddStatementChunk(target.Content, target);
}
public override void GenerateStartParentChunk(Block target, ChunkGeneratorContext context)
{
context.ChunkTreeBuilder.StartParentChunk <TemplateChunk>(target);
}
/// <summary>
/// Generates <see cref="TagHelperPrefixDirectiveChunk"/>s.
/// </summary>
/// <param name="target">
/// The <see cref="Span"/> responsible for this <see cref="TagHelperPrefixDirectiveChunkGenerator"/>.
/// </param>
/// <param name="context">A <see cref="ChunkGeneratorContext"/> instance that contains information about
/// the current chunk generation process.</param>
public override void GenerateChunk(Span target, ChunkGeneratorContext context)
{
context.ChunkTreeBuilder.AddTagHelperPrefixDirectiveChunk(_prefix, target);
}
public override void GenerateChunk(Span target, ChunkGeneratorContext context)
{
context.ChunkTreeBuilder.AddStatementChunk(target.Content, target);
}
public CSharpCodeWriter WriteEndInstrumentationContext(ChunkGeneratorContext context)
{
return WriteMethodInvocation(context.Host.GeneratedClassContext.EndContextMethodName);
}
public override void GenerateEndParentChunk(Block target, ChunkGeneratorContext context)
{
context.ChunkTreeBuilder.EndParentChunk();
}
public CSharpCodeWriter WriteStartInstrumentationContext(
ChunkGeneratorContext context,
SyntaxTreeNode syntaxNode,
bool isLiteral)
{
return WriteStartInstrumentationContext(
context,
syntaxNode.Start.AbsoluteIndex,
syntaxNode.Length,
isLiteral);
}
/// <summary>
/// Generates <see cref="RemoveTagHelperChunk"/>s.
/// </summary>
/// <param name="target">
/// The <see cref="Span"/> responsible for this <see cref="RemoveTagHelperChunkGenerator"/>.
/// </param>
/// <param name="context">A <see cref="ChunkGeneratorContext"/> instance that contains information about
/// the current chunk generation process.</param>
public override void GenerateChunk(Span target, ChunkGeneratorContext context)
{
context.ChunkTreeBuilder.AddRemoveTagHelperChunk(LookupText, target);
}
public CSharpCodeWriter WriteStartInstrumentationContext(
ChunkGeneratorContext context,
int absoluteIndex,
int length,
bool isLiteral)
{
WriteStartMethodInvocation(context.Host.GeneratedClassContext.BeginContextMethodName);
Write(absoluteIndex.ToString(CultureInfo.InvariantCulture));
WriteParameterSeparator();
Write(length.ToString(CultureInfo.InvariantCulture));
WriteParameterSeparator();
Write(isLiteral ? "true" : "false");
return WriteEndMethodInvocation();
}
public override void GenerateEndParentChunk(Block target, ChunkGeneratorContext context)
{
context.ChunkTreeBuilder.EndParentChunk();
}
public override void GenerateChunk(Span target, ChunkGeneratorContext context)
{
var modelChunk = new ModelChunk(ModelType);
context.ChunkTreeBuilder.AddChunk(modelChunk, target, topLevel: true);
}
/// <summary>
/// Generates <see cref="TagHelperPrefixDirectiveChunk"/>s.
/// </summary>
/// <param name="target">
/// The <see cref="Span"/> responsible for this <see cref="TagHelperPrefixDirectiveChunkGenerator"/>.
/// </param>
/// <param name="context">A <see cref="ChunkGeneratorContext"/> instance that contains information about
/// the current chunk generation process.</param>
public override void GenerateChunk(Span target, ChunkGeneratorContext context)
{
context.ChunkTreeBuilder.AddTagHelperPrefixDirectiveChunk(Prefix, target);
}
public void GenerateChunk(Span target, ChunkGeneratorContext context)
{
context.ChunkTreeBuilder.AddExpressionChunk(target.Content, target);
}
public void GenerateEndParentChunk(Block target, ChunkGeneratorContext context)
{
}
/// <summary>
/// Instantiates a new instance of the <see cref="CodeGeneratorContext"/> object.
/// </summary>
/// <param name="generatorContext">A <see cref="ChunkGeneratorContext"/> to copy information from.</param>
/// <param name="errorSink">
/// The <see cref="ErrorSink"/> used to collect <see cref="RazorError"/>s encountered
/// when parsing the current Razor document.
/// </param>
public CodeGeneratorContext(ChunkGeneratorContext generatorContext, ErrorSink errorSink)
: base(generatorContext)
{
ErrorSink = errorSink;
ExpressionRenderingMode = ExpressionRenderingMode.WriteToOutput;
}