本文整理汇总了C#中ExpressionSyntax.Ancestors方法的典型用法代码示例。如果您正苦于以下问题：C# ExpressionSyntax.Ancestors方法的具体用法？C# ExpressionSyntax.Ancestors怎么用？C# ExpressionSyntax.Ancestors使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类ExpressionSyntax的用法示例。
在下文中一共展示了ExpressionSyntax.Ancestors方法的4个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: GetNodeRootForAnalysis
private static SyntaxNode GetNodeRootForAnalysis(ExpressionSyntax expression)
{
var parentNodeToSpeculate = expression
.Ancestors(ascendOutOfTrivia: false)
.FirstOrDefault(node =>
node.Kind() != SyntaxKind.Argument &&
node.Kind() != SyntaxKind.ArgumentList);
return parentNodeToSpeculate ?? expression;
}示例2: IsInAsyncFunction
private static bool IsInAsyncFunction(ExpressionSyntax expression)
{
foreach (var node in expression.Ancestors())
{
switch (node.Kind())
{
case SyntaxKind.ParenthesizedLambdaExpression:
case SyntaxKind.SimpleLambdaExpression:
case SyntaxKind.AnonymousMethodExpression:
return (node as AnonymousFunctionExpressionSyntax)?.AsyncKeyword.IsMissing == false;
case SyntaxKind.MethodDeclaration:
return (node as MethodDeclarationSyntax)?.Modifiers.Any(SyntaxKind.AsyncKeyword) == true;
default:
continue;
}
}
return false;
}示例3: SkipFieldsFromItsOwnConstructor
private static bool SkipFieldsFromItsOwnConstructor(TypeDeclarationWithSymbol type, ExpressionSyntax assignmentExpression, ISymbol assignmentSymbol)
{
var parentConstructor = assignmentExpression.Ancestors().OfType<ConstructorDeclarationSyntax>().FirstOrDefault();
if (parentConstructor == null)
return true;
return
assignmentSymbol.ContainingType != type.NamedTypeSymbol ||
assignmentSymbol.IsStatic != parentConstructor.Modifiers.Any(p => p.IsKind(SyntaxKind.StaticKeyword));
}示例4: CreateRootWithUsingFromArgument
private static SyntaxNode CreateRootWithUsingFromArgument(SyntaxNode root, ExpressionSyntax childOfArgumentNode, string identifierName)
{
var arg = childOfArgumentNode.Parent as ArgumentSyntax;
var variableDeclaration = SyntaxFactory.VariableDeclaration(SyntaxFactory.IdentifierName(@"var"))
.WithVariables(SyntaxFactory.SingletonSeparatedList(SyntaxFactory.VariableDeclarator(SyntaxFactory.Identifier(identifierName))
.WithInitializer(SyntaxFactory.EqualsValueClause(SyntaxFactory.Token(SyntaxKind.EqualsToken), childOfArgumentNode))));
var args = arg.Parent as ArgumentListSyntax;
var newArgs = args.ReplaceNode(arg, arg.WithExpression(SyntaxFactory.IdentifierName(identifierName)));
StatementSyntax statement = childOfArgumentNode.FirstAncestorOfType<ExpressionStatementSyntax>();
if (statement != null)
{
var exprStatement = statement.ReplaceNode(args, newArgs);
var newUsingStatment = CreateUsingStatement(exprStatement, SyntaxFactory.Block(exprStatement))
.WithDeclaration(variableDeclaration);
return root.ReplaceNode(statement, newUsingStatment);
}
statement = (StatementSyntax)childOfArgumentNode.Ancestors().First(node => node is StatementSyntax);
var newStatement = statement.ReplaceNode(args, newArgs);
var statementsForUsing = new[] { newStatement }.Concat(GetChildStatementsAfter(statement));
var usingBlock = SyntaxFactory.Block(statementsForUsing);
var usingStatement = CreateUsingStatement(newStatement, usingBlock)
.WithDeclaration(variableDeclaration);
var statementsToReplace = new List<StatementSyntax> { statement };
statementsToReplace.AddRange(statementsForUsing.Skip(1));
return root.ReplaceNodes(statementsToReplace, (node, _) => node.Equals(statement) ? usingStatement : null);
}