本文整理汇总了C#中Microsoft.CodeAnalysis.CSharp.Syntax.CompilationUnitSyntax.GetFirstDirective方法的典型用法代码示例。如果您正苦于以下问题：C# CompilationUnitSyntax.GetFirstDirective方法的具体用法？C# CompilationUnitSyntax.GetFirstDirective怎么用？C# CompilationUnitSyntax.GetFirstDirective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.CSharp.Syntax.CompilationUnitSyntax的用法示例。
在下文中一共展示了CompilationUnitSyntax.GetFirstDirective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: BuildConditionalDirectiveTree
public static DirectiveSpan BuildConditionalDirectiveTree(CompilationUnitSyntax compilationUnit)
{
var root = new DirectiveSpan(0) { End = compilationUnit.Span.End };
var directiveStack = new Stack<DirectiveSpan>();
directiveStack.Push(root);
for (var directiveTrivia = compilationUnit.GetFirstDirective(); directiveTrivia != null; directiveTrivia = directiveTrivia.GetNextDirective())
{
DirectiveSpan previousDirectiveSpan;
DirectiveSpan newDirectiveSpan;
switch (directiveTrivia.Kind())
{
case SyntaxKind.IfDirectiveTrivia:
newDirectiveSpan = directiveStack.Peek().AddChild(directiveTrivia.SpanStart);
directiveStack.Push(newDirectiveSpan);
break;
case SyntaxKind.ElifDirectiveTrivia:
case SyntaxKind.ElseDirectiveTrivia:
previousDirectiveSpan = directiveStack.Pop();
previousDirectiveSpan.End = directiveTrivia.SpanStart;
newDirectiveSpan = directiveStack.Peek().AddChild(directiveTrivia.SpanStart);
directiveStack.Push(newDirectiveSpan);
break;
case SyntaxKind.EndIfDirectiveTrivia:
previousDirectiveSpan = directiveStack.Pop();
previousDirectiveSpan.End = directiveTrivia.SpanStart;
break;
default:
// ignore all other directive trivia
break;
}
}
// cleanup the stack if for some reason the tree of directives has not reached closure.
while (directiveStack.Count > 1)
{
var directiveSpan = directiveStack.Pop();
directiveSpan.End = compilationUnit.Span.End;
}
return root;
}