public override void VisitExpressionSpan(ExpressionChunkGenerator chunkGenerator, Span span)
{
_builder.Add(new IntermediateToken()
{
Content = span.Content,
Kind = TokenKind.CSharp,
Source = BuildSourceSpanFromNode(span),
});
}
public void ConstructorTransfersInstanceOfChunkGeneratorFromBlockBuilder()
{
// Arrange
var expected = new ExpressionChunkGenerator();
var builder = new BlockBuilder()
{
Type = BlockType.Helper,
ChunkGenerator = expected
};
// Act
var actual = builder.Build();
// Assert
Assert.Same(expected, actual.ChunkGenerator);
}
// CSharp expressions are broken up into blocks and spans because Razor allows Razor comments
// inside an expression.
// Ex:
// @DateTime.@*This is a comment*@Now
//
// We need to capture this in the IR so that we can give each piece the correct source mappings
public override void VisitExpressionBlock(ExpressionChunkGenerator chunkGenerator, Block block)
{
if (_builder.Current is CSharpExpressionAttributeValueIntermediateNode)
{
VisitDefault(block);
return;
}
var expressionNode = new CSharpExpressionIntermediateNode();
_builder.Push(expressionNode);
VisitDefault(block);
_builder.Pop();
if (expressionNode.Children.Count > 0)
{
var sourceRangeStart = expressionNode
.Children
.FirstOrDefault(child => child.Source != null)
?.Source;
if (sourceRangeStart != null)
{
var contentLength = expressionNode.Children.Sum(child => child.Source?.Length ?? 0);
expressionNode.Source = new SourceSpan(
sourceRangeStart.Value.FilePath ?? FilePath,
sourceRangeStart.Value.AbsoluteIndex,
sourceRangeStart.Value.LineIndex,
sourceRangeStart.Value.CharacterIndex,
contentLength);
}
}
}
public virtual void VisitExpressionSpan(ExpressionChunkGenerator chunkGenerator, Span span)
{
VisitDefault(span);
}
public virtual void VisitExpressionBlock(ExpressionChunkGenerator chunkGenerator, Block block)
{
VisitDefault(block);
}