本文整理汇总了C#中Microsoft.CodeAnalysis.Document.GetPartialSemanticModelAsync方法的典型用法代码示例。如果您正苦于以下问题：C# Document.GetPartialSemanticModelAsync方法的具体用法？C# Document.GetPartialSemanticModelAsync怎么用？C# Document.GetPartialSemanticModelAsync使用的例子？那么恭喜您, 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Microsoft.CodeAnalysis.Document的用法示例。
在下文中一共展示了Document.GetPartialSemanticModelAsync方法的1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: GetInfoAsync
internal static async Task<DebugDataTipInfo> GetInfoAsync(Document document, int position, CancellationToken cancellationToken)
{
var root = await document.GetSyntaxRootAsync(cancellationToken).ConfigureAwait(false);
var token = root.FindToken(position);
var expression = token.Parent as ExpressionSyntax;
if (expression == null)
{
return token.IsKind(SyntaxKind.IdentifierToken)
? new DebugDataTipInfo(token.Span, text: null)
: default(DebugDataTipInfo);
}
if (expression.IsAnyLiteralExpression())
{
// If the user hovers over a literal, give them a DataTip for the type of the
// literal they're hovering over.
// Partial semantics should always be sufficient because the (unconverted) type
// of a literal can always easily be determined.
var semanticModel = await document.GetPartialSemanticModelAsync(cancellationToken).ConfigureAwait(false);
var type = semanticModel.GetTypeInfo(expression, cancellationToken).Type;
return type == null
? default(DebugDataTipInfo)
: new DebugDataTipInfo(expression.Span, type.ToNameDisplayString());
}
if (expression.IsRightSideOfDotOrArrow())
{
var curr = expression;
while (true)
{
var conditionalAccess = curr.GetParentConditionalAccessExpression();
if (conditionalAccess == null)
{
break;
}
curr = conditionalAccess;
}
if (curr == expression)
{
// NB: Parent.Span, not Span as below.
return new DebugDataTipInfo(expression.Parent.Span, text: null);
}
// NOTE: There may not be an ExpressionSyntax corresponding to the range we want.
// For example, for input a?.$$B?.C, we want span [|a?.B|]?.C.
return new DebugDataTipInfo(TextSpan.FromBounds(curr.SpanStart, expression.Span.End), text: null);
}
// NOTE(cyrusn): This behavior is to mimic what we did in Dev10, I'm not sure if it's
// necessary or not.
if (expression.IsKind(SyntaxKind.InvocationExpression))
{
expression = ((InvocationExpressionSyntax)expression).Expression;
}
string textOpt = null;
var typeSyntax = expression as TypeSyntax;
if (typeSyntax != null && typeSyntax.IsVar)
{
// If the user is hovering over 'var', then pass back the full type name that 'var'
// binds to.
var semanticModel = await document.GetSemanticModelAsync(cancellationToken).ConfigureAwait(false);
var type = semanticModel.GetTypeInfo(typeSyntax, cancellationToken).Type;
if (type != null)
{
textOpt = type.ToNameDisplayString();
}
}
return new DebugDataTipInfo(expression.Span, textOpt);
}