public override void VisitTemplateBlock(TemplateBlockChunkGenerator chunkGenerator, Block block)
{
var templateNode = new TemplateIntermediateNode();
_builder.Push(templateNode);
VisitDefault(block);
_builder.Pop();
if (templateNode.Children.Count > 0)
{
var sourceRangeStart = templateNode
.Children
.FirstOrDefault(child => child.Source != null)
?.Source;
if (sourceRangeStart != null)
{
var contentLength = templateNode.Children.Sum(child => child.Source?.Length ?? 0);
templateNode.Source = new SourceSpan(
sourceRangeStart.Value.FilePath ?? FilePath,
sourceRangeStart.Value.AbsoluteIndex,
sourceRangeStart.Value.LineIndex,
sourceRangeStart.Value.CharacterIndex,
contentLength);
}
}
}
public override void VisitCSharpTemplateBlock(CSharpTemplateBlockSyntax node)
{
var templateNode = new TemplateIntermediateNode();
_builder.Push(templateNode);
base.VisitCSharpTemplateBlock(node);
_builder.Pop();
if (templateNode.Children.Count > 0)
{
var sourceRangeStart = templateNode
.Children
.FirstOrDefault(child => child.Source != null)
?.Source;
if (sourceRangeStart != null)
{
var contentLength = templateNode.Children.Sum(child => child.Source?.Length ?? 0);
templateNode.Source = new SourceSpan(
sourceRangeStart.Value.FilePath ?? SourceDocument.FilePath,
sourceRangeStart.Value.AbsoluteIndex,
sourceRangeStart.Value.LineIndex,
sourceRangeStart.Value.CharacterIndex,
contentLength);
}
}
}
public void WriteTemplate(CodeRenderingContext context, TemplateIntermediateNode node)
{
const string ItemParameterName = "item";
const string TemplateWriterName = "__razor_template_writer";
context.CodeWriter
.Write(ItemParameterName).Write(" => ")
.WriteStartNewObject(TemplateTypeName);
using (context.CodeWriter.BuildAsyncLambda(TemplateWriterName))
{
context.NodeWriter.BeginWriterScope(context, TemplateWriterName);
context.RenderChildren(node);
context.NodeWriter.EndWriterScope(context);
}
context.CodeWriter.WriteEndMethodInvocation(endLine: false);
}
public void WriteTemplate_WritesTemplateCode()
{
// Arrange
var node = new TemplateIntermediateNode()
{
Children =
{
new CSharpExpressionIntermediateNode()
}
};
var extension = new TemplateTargetExtension()
{
TemplateTypeName = "global::TestTemplate"
};
var nodeWriter = new RuntimeNodeWriter()
{
PushWriterMethod = "TestPushWriter",
PopWriterMethod = "TestPopWriter"
};
var context = TestCodeRenderingContext.CreateRuntime(nodeWriter: nodeWriter);
// Act
extension.WriteTemplate(context, node);
// Assert
var expected = @"item => new global::TestTemplate(async(__razor_template_writer) => {
TestPushWriter(__razor_template_writer);
Render Children
TestPopWriter();
}
)";
var output = context.CodeWriter.GenerateCode();
Assert.Equal(expected, output);
}
public abstract void WriteTemplate(CodeRenderingContext context, TemplateIntermediateNode node);
public void WriteTemplate(CodeRenderingContext context, TemplateIntermediateNode node)
{
// This is OK because this will only be plugged in by the component code target
// not globally.
((ComponentNodeWriter)context.NodeWriter).WriteTemplate(context, node);
}
public void WriteTemplate(CodeRenderingContext context, TemplateIntermediateNode node)
{
((BlazorNodeWriter)context.NodeWriter).WriteTemplate(context, node);
}
