private void RenderBufferedAttributeValueAccessor(CSharpCodeWriter writer)
{
if (_designTimeMode)
{
// There is no value buffer in design time mode but we still want to write out a value. We write a
// value to ensure the tag helper's property type is string.
writer.Write("string.Empty");
}
else
{
writer.Write(StringValueBufferVariableName);
}
}
public void WriterConstructedWithoutContentLengthAndSourceFile_AddsLinePragmas_OnDispose()
{
// Arrange
var location = new SourceLocation(10, 1, 20);
var expected = string.Join(Environment.NewLine,
@"#line 2 ""myfile""",
"Hello world",
"",
"#line default",
"#line hidden",
"");
var expectedMappings = new LineMapping(
new MappingLocation(location, 30),
new MappingLocation(new SourceLocation(18, 1, 0), 11));
var writer = new CSharpCodeWriter();
// Act
using (var mappingWriter = new CSharpLineMappingWriter(writer, location, "myfile"))
{
writer.Write("Hello world");
}
// Assert
Assert.Equal(expected, writer.GenerateCode());
Assert.Empty(writer.LineMappingManager.Mappings);
}
/// <inheritdoc />
/// <remarks>If the attribute being rendered is of the type
/// <see cref="GeneratedTagHelperAttributeContext.ModelExpressionTypeName"/>, then a model expression will be
/// created by calling into <see cref="GeneratedTagHelperAttributeContext.CreateModelExpressionMethodName"/>.
/// </remarks>
public override void RenderAttributeValue(
TagHelperAttributeDescriptor attributeDescriptor,
CSharpCodeWriter writer,
CodeGeneratorContext codeGeneratorContext,
Action<CSharpCodeWriter> renderAttributeValue,
bool complexValue)
{
if (attributeDescriptor == null)
{
throw new ArgumentNullException(nameof(attributeDescriptor));
}
if (writer == null)
{
throw new ArgumentNullException(nameof(writer));
}
if (codeGeneratorContext == null)
{
throw new ArgumentNullException(nameof(codeGeneratorContext));
}
if (renderAttributeValue == null)
{
throw new ArgumentNullException(nameof(renderAttributeValue));
}
if (attributeDescriptor.TypeName.Equals(_context.ModelExpressionTypeName, StringComparison.Ordinal))
{
writer
.WriteStartMethodInvocation(_context.CreateModelExpressionMethodName)
.Write(ModelLambdaVariableName)
.Write(" => ");
if (!complexValue)
{
writer
.Write(ModelLambdaVariableName)
.Write(".");
}
renderAttributeValue(writer);
writer.WriteEndMethodInvocation(endLine: false);
}
else
{
base.RenderAttributeValue(
attributeDescriptor,
writer,
codeGeneratorContext,
renderAttributeValue,
complexValue);
}
}
private void RenderBufferedAttributeValueAccessor(CSharpCodeWriter writer)
{
if (_designTimeMode)
{
// There is no value buffer in design time mode but we still want to write out a value. We write a
// value to ensure the tag helper's property type is string.
writer.Write("string.Empty");
}
else
{
writer.WriteInstanceMethodInvocation(
StringValueBufferVariableName,
_tagHelperContext.TagHelperContentGetContentMethodName,
endLine: false,
parameters: _tagHelperContext.HtmlEncoderPropertyName);
}
}
public void WriterConstructedWithContentLength_AddsLineMappings_OnDispose()
{
// Arrange
var location = new SourceLocation(10, 15, 20);
var expected = new LineMapping(
new MappingLocation(location, 30),
new MappingLocation(new SourceLocation(0, 0, 0), 11));
var writer = new CSharpCodeWriter();
// Act
using (var mappingWriter = new CSharpLineMappingWriter(writer, location, 30))
{
writer.Write("Hello world");
}
// Assert
Assert.Equal("Hello world", writer.GenerateCode());
var mapping = Assert.Single(writer.LineMappingManager.Mappings);
Assert.Equal(expected, mapping);
}
private void RenderBufferedAttributeValueAccessor(CSharpCodeWriter writer)
{
if (_designTimeMode)
{
// There is no value buffer in design time mode but we still want to write out a value. We write a
// value to ensure the tag helper's property type is string.
writer.Write("string.Empty");
}
else
{
writer.Write(StringValueBufferVariableName);
}
}
private void RenderBufferedAttributeValueAccessor(CSharpCodeWriter writer)
{
if (_designTimeMode)
{
// There is no value buffer in design time mode but we still want to write out a value. We write a
// value to ensure the tag helper's property type is string.
writer.Write("string.Empty");
}
else
{
writer.WriteInstanceMethodInvocation(
StringValueBufferVariableName,
_tagHelperContext.TagHelperContentGetContentMethodName,
endLine: false,
parameters: _tagHelperContext.HtmlEncoderPropertyName);
}
}