private bool TryRewriteWhitespace(CSharpCodeBlockSyntax codeBlock, out CSharpCodeBlockSyntax rewritten, out SyntaxNode whitespaceLiteral)
{
// Rewrite any whitespace represented as code at the start of a line preceding an expression block.
// We want it to be rendered as Markup.
rewritten = null;
whitespaceLiteral = null;
var children = codeBlock.ChildNodes();
if (children.Count < 2)
{
return(false);
}
if (children[0] is CSharpStatementLiteralSyntax literal &&
(children[1] is CSharpExplicitExpressionSyntax || children[1] is CSharpImplicitExpressionSyntax))
{
var containsNonWhitespace = literal.DescendantNodes()
.Where(n => n.IsToken)
.Cast <SyntaxToken>()
.Any(t => !string.IsNullOrWhiteSpace(t.Content));
if (!containsNonWhitespace)
{
// Literal node is all whitespace. Can rewrite.
whitespaceLiteral = SyntaxFactory.MarkupTextLiteral(literal.LiteralTokens);
rewritten = codeBlock.ReplaceNode(literal, newNode: null);
return(true);
}
}
return(false);
}
public override void VisitCSharpCodeBlock(CSharpCodeBlockSyntax node)
{
if (node.Parent is CSharpStatementBodySyntax ||
node.Parent is CSharpExplicitExpressionBodySyntax ||
node.Parent is CSharpImplicitExpressionBodySyntax ||
node.Parent is RazorDirectiveBodySyntax ||
(_currentBlockKind == BlockKindInternal.Directive &&
node.Children.Count == 1 &&
node.Children[0] is CSharpStatementLiteralSyntax))
{
base.VisitCSharpCodeBlock(node);
return;
}
WriteBlock(node, BlockKindInternal.Statement, base.VisitCSharpCodeBlock);
}
public override void VisitCSharpCodeBlock(CSharpCodeBlockSyntax node)
{
if (node.Parent is CSharpStatementBodySyntax ||
node.Parent is CSharpExplicitExpressionBodySyntax ||
node.Parent is CSharpImplicitExpressionBodySyntax ||
node.Parent is RazorDirectiveBodySyntax ||
(_currentBlockKind == FormattingBlockKind.Directive &&
node.Parent?.Parent is RazorDirectiveBodySyntax))
{
// If we get here, it means we don't want this code block to be considered significant.
// Without this, we would have double indentation in places where
// CSharpCodeBlock is used as a wrapper block in the syntax tree.
if (!(node.Parent is RazorDirectiveBodySyntax))
{
_currentRazorIndentationLevel++;
}
var isInCodeBlockDirective =
node.Parent?.Parent?.Parent is RazorDirectiveSyntax directive &&
directive.DirectiveDescriptor.Kind == DirectiveKind.CodeBlock;
if (isInCodeBlockDirective)
{
// This means this is the code portion of an @code or @functions kind of block.
_isInClassBody = true;
}
base.VisitCSharpCodeBlock(node);
if (isInCodeBlockDirective)
{
// Finished visiting the code portion. We are no longer in it.
_isInClassBody = false;
}
if (!(node.Parent is RazorDirectiveBodySyntax))
{
_currentRazorIndentationLevel--;
}
return;
}
WriteBlock(node, FormattingBlockKind.Statement, base.VisitCSharpCodeBlock);
}
public override void VisitCSharpCodeBlock(CSharpCodeBlockSyntax node)
{
if (node.Parent is CSharpStatementBodySyntax ||
node.Parent is CSharpExplicitExpressionBodySyntax ||
node.Parent is CSharpImplicitExpressionBodySyntax ||
node.Parent is RazorDirectiveBodySyntax ||
(_currentBlockKind == FormattingBlockKind.Directive &&
node.Children.Count == 1 &&
node.Children[0] is CSharpStatementLiteralSyntax))
{
if (!(node.Parent is RazorDirectiveBodySyntax))
{
_currentIndentationLevel++;
}
var isInCodeBlockDirective =
node.Parent?.Parent?.Parent is RazorDirectiveSyntax directive &&
directive.DirectiveDescriptor.Kind == DirectiveKind.CodeBlock;
if (isInCodeBlockDirective)
{
// This means this is the code portion of an @code or @functions kind of block.
_isInClassBody = true;
}
base.VisitCSharpCodeBlock(node);
if (isInCodeBlockDirective)
{
// Finished visiting the code portion. We are no longer in it.
_isInClassBody = false;
}
if (!(node.Parent is RazorDirectiveBodySyntax))
{
_currentIndentationLevel--;
}
return;
}
WriteBlock(node, FormattingBlockKind.Statement, base.VisitCSharpCodeBlock);
}
public override void VisitCSharpCodeBlock(CSharpCodeBlockSyntax node)
{
if (node.Parent is CSharpStatementBodySyntax ||
node.Parent is CSharpExplicitExpressionBodySyntax ||
node.Parent is CSharpImplicitExpressionBodySyntax ||
node.Parent is RazorDirectiveBodySyntax ||
(_currentBlockKind == FormattingBlockKind.Directive &&
node.Children.Count == 1 &&
node.Children[0] is CSharpStatementLiteralSyntax))
{
if (!(node.Parent is RazorDirectiveBodySyntax))
{
_currentIndentationLevel++;
}
base.VisitCSharpCodeBlock(node);
if (!(node.Parent is RazorDirectiveBodySyntax))
{
_currentIndentationLevel--;
}
return;
}
WriteBlock(node, FormattingBlockKind.Statement, base.VisitCSharpCodeBlock);
}