public bool IsPartOfUsingConstruct(InvocationExpressionSyntax syntax)
{
if (syntax == null)
{
throw new ArgumentNullException(nameof(syntax));
}
ParentNodeType pnt = ParentNodeType.FindTerminalParentNode(syntax);
return(pnt.Ok ?? false);
}
public (bool PartOfInlineDeclUsing, VariableDeclarationSyntax ParentNode) IsPartOfInlineDeclUsingConstruct(InvocationExpressionSyntax syntax)
{
if (syntax == null)
{
throw new ArgumentNullException(nameof(syntax));
}
ParentNodeType pnt = ParentNodeType.FindTerminalParentNode(syntax);
VariableDeclarationSyntax pNode;
bool ret;
if (true == pnt.Ok)
{
switch (pnt.TerminalNode?.Kind())
{
default:
case null:
ret = false;
pNode = null;
break;
case SyntaxKind.LocalDeclarationStatement:
ret = true;
pNode = pnt.TerminalNode.ChildNodes().OfType <VariableDeclarationSyntax>().FirstOrDefault();
Debug.Assert(pNode != null);
break;
case SyntaxKind.UsingStatement:
(ret, pNode) = HasVariableDeclarationChildNode((UsingStatementSyntax)pnt.TerminalNode);
Debug.Assert(!ret || pNode != null);
break;
}
}
else
{
ret = false;
pNode = null;
}
Debug.Assert(!ret || pNode != null);
return(ret, pNode);
}
public (bool ok, BlockSyntax ContainingBlockSyntax, UsingStatementSyntax UsingStatementSyntax) FindBlockOrUsingStatement(InvocationExpressionSyntax syntax)
{
BlockSyntax usingDeclarationBlock;
UsingStatementSyntax usingStateSyntax;
bool ok;
ParentNodeType pnt = ParentNodeType.FindTerminalParentNode(syntax);
if (true == pnt.Ok)
{
switch (pnt.TerminalNode?.Kind())
{
default:
case null:
ok = false;
usingDeclarationBlock = null;
usingStateSyntax = null;
break;
case SyntaxKind.LocalDeclarationStatement:
(ok, usingDeclarationBlock) =
FindBlockSyntaxAncestor((LocalDeclarationStatementSyntax)pnt.TerminalNode);
usingStateSyntax = null;
break;
case SyntaxKind.UsingStatement:
usingStateSyntax = (UsingStatementSyntax)pnt.TerminalNode;
usingDeclarationBlock = null;
ok = true;
//(ret, pNode) = HasVariableDeclarationChildNode((UsingStatementSyntax)pnt.TerminalNode);
//Debug.Assert(!ret || pNode != null);
break;
}
}
else
{
ok = false;
usingDeclarationBlock = null;
usingStateSyntax = null;
}
Debug.Assert(!ok || ((usingStateSyntax == null) != (usingDeclarationBlock == null)));
Debug.Assert(ok || (usingStateSyntax == null && usingDeclarationBlock == null));
return(ok, usingDeclarationBlock, usingStateSyntax);
(bool FoundBlockSyntax, BlockSyntax Bs) FindBlockSyntaxAncestor(LocalDeclarationStatementSyntax ldss)
{
BlockSyntax bs = null;
SyntaxNode current = ldss;
while (bs == null && current != null)
{
if (current is BlockSyntax blk)
{
bs = blk;
}
else
{
current = current.Parent;
}
}
return(bs != null, bs);
}
}