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);
}
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);
}
// Render assignment of attribute value to the value accessor.
private void RenderNewAttributeValueAssignment(
TagHelperAttributeDescriptor attributeDescriptor,
bool bufferableAttribute,
Chunk attributeValueChunk,
string valueAccessor)
{
// Plain text values are non Razor code (@DateTime.Now) values. If an attribute is bufferable it
// may be more than just a plain text value, it may also contain Razor code which is why we attempt
// to retrieve a plain text value here.
string textValue;
var isPlainTextValue = TryGetPlainTextValue(attributeValueChunk, out textValue);
if (bufferableAttribute)
{
if (!isPlainTextValue)
{
// If we haven't recorded a value and we need to buffer an attribute value and the value is not
// plain text then we need to prepare the value prior to setting it below.
BuildBufferedWritingScope(attributeValueChunk, htmlEncodeValues: false);
}
_writer.WriteStartAssignment(valueAccessor);
if (isPlainTextValue)
{
// If the attribute is bufferable but has a plain text value that means the value
// is a string which needs to be surrounded in quotes.
RenderQuotedAttributeValue(textValue, attributeDescriptor);
}
else
{
// The value contains more than plain text e.g. stringAttribute ="Time: @DateTime.Now".
RenderBufferedAttributeValue(attributeDescriptor);
}
_writer.WriteLine(";");
}
else
{
// Write out simple assignment for non-string property value. Try to keep the whole
// statement together and the #line pragma correct to make debugging possible.
using (var lineMapper = new CSharpLineMappingWriter(
_writer,
attributeValueChunk.Start,
_context.SourceFile))
{
// Place the assignment LHS to align RHS with original attribute value's indentation.
// Unfortunately originalIndent is incorrect if original line contains tabs. Unable to
// use a CSharpPaddingBuilder because the Association has no Previous node; lost the
// original Span sequence when the parse tree was rewritten.
var originalIndent = attributeValueChunk.Start.CharacterIndex;
var generatedLength = valueAccessor.Length + " = ".Length;
var newIndent = originalIndent - generatedLength;
if (newIndent > 0)
{
_writer.Indent(newIndent);
}
_writer.WriteStartAssignment(valueAccessor);
lineMapper.MarkLineMappingStart();
// Write out code expression for this attribute value. Property is not a string.
// So quoting or buffering are not helpful.
RenderCodeAttributeValue(attributeValueChunk, attributeDescriptor, isPlainTextValue);
// End the assignment to the attribute.
lineMapper.MarkLineMappingEnd();
_writer.WriteLine(";");
}
}
}
// Render assignment of attribute value to the value accessor.
private void RenderNewAttributeValueAssignment(
TagHelperAttributeDescriptor attributeDescriptor,
bool bufferableAttribute,
Chunk attributeValueChunk,
string valueAccessor)
{
// Plain text values are non Razor code (@DateTime.Now) values. If an attribute is bufferable it
// may be more than just a plain text value, it may also contain Razor code which is why we attempt
// to retrieve a plain text value here.
string textValue;
var isPlainTextValue = TryGetPlainTextValue(attributeValueChunk, out textValue);
if (bufferableAttribute)
{
if (!isPlainTextValue)
{
// If we haven't recorded a value and we need to buffer an attribute value and the value is not
// plain text then we need to prepare the value prior to setting it below.
BuildBufferedWritingScope(attributeValueChunk, htmlEncodeValues: false);
}
_writer.WriteStartAssignment(valueAccessor);
if (isPlainTextValue)
{
// If the attribute is bufferable but has a plain text value that means the value
// is a string which needs to be surrounded in quotes.
RenderQuotedAttributeValue(textValue, attributeDescriptor);
}
else
{
// The value contains more than plain text e.g. stringAttribute ="Time: @DateTime.Now".
RenderBufferedAttributeValue(attributeDescriptor);
}
_writer.WriteLine(";");
}
else
{
// Write out simple assignment for non-string property value. Try to keep the whole
// statement together and the #line pragma correct to make debugging possible.
using (var lineMapper = new CSharpLineMappingWriter(
_writer,
attributeValueChunk.Start,
_context.SourceFile))
{
// Place the assignment LHS to align RHS with original attribute value's indentation.
// Unfortunately originalIndent is incorrect if original line contains tabs. Unable to
// use a CSharpPaddingBuilder because the Association has no Previous node; lost the
// original Span sequence when the parse tree was rewritten.
var originalIndent = attributeValueChunk.Start.CharacterIndex;
var generatedLength = valueAccessor.Length + " = ".Length;
var newIndent = originalIndent - generatedLength;
if (newIndent > 0)
{
_writer.Indent(newIndent);
}
_writer.WriteStartAssignment(valueAccessor);
lineMapper.MarkLineMappingStart();
// Write out code expression for this attribute value. Property is not a string.
// So quoting or buffering are not helpful.
RenderCodeAttributeValue(attributeValueChunk, attributeDescriptor, isPlainTextValue);
// End the assignment to the attribute.
lineMapper.MarkLineMappingEnd();
_writer.WriteLine(";");
}
}
}