internal static SyntaxTree GetSyntaxTree(Query query)
{
if (query != null)
{
switch (query.Language)
{
case QueryLanguage.Expression:
return(Microsoft.CodeAnalysis.CSharp.CSharpSyntaxTree.ParseText(query.Text,
InternalsHelper.GetCSharpParseOptionsForSourceCodeKind(SourceCodeKind.Interactive)));
case QueryLanguage.Statements:
return(Microsoft.CodeAnalysis.CSharp.CSharpSyntaxTree.ParseText(query.Text,
InternalsHelper.GetCSharpParseOptionsForSourceCodeKind(SourceCodeKind.Script)));
case QueryLanguage.Program:
return(Microsoft.CodeAnalysis.CSharp.CSharpSyntaxTree.ParseText(query.Text,
InternalsHelper.GetCSharpParseOptionsForSourceCodeKind(SourceCodeKind.Script)));
case QueryLanguage.VBExpression:
return(Microsoft.CodeAnalysis.VisualBasic.VisualBasicSyntaxTree.ParseText(query.Text,
InternalsHelper.GetVisualBasicParseOptionsForSourceCodeKind(SourceCodeKind.Interactive)));
case QueryLanguage.VBStatements:
return(Microsoft.CodeAnalysis.VisualBasic.VisualBasicSyntaxTree.ParseText(query.Text,
InternalsHelper.GetVisualBasicParseOptionsForSourceCodeKind(SourceCodeKind.Script)));
case QueryLanguage.VBProgram:
return(Microsoft.CodeAnalysis.VisualBasic.VisualBasicSyntaxTree.ParseText(query.Text,
InternalsHelper.GetVisualBasicParseOptionsForSourceCodeKind(SourceCodeKind.Script)));
default:
return(null);
}
}
return(null);
}
public void GetIdentifierTokenValueTextReturnsNullForInvalidNode()
{
// Given
SyntaxTree syntaxTree = Microsoft.CodeAnalysis.CSharp.CSharpSyntaxTree.ParseText("int c = 0;",
InternalsHelper.GetCSharpParseOptionsForSourceCodeKind(SourceCodeKind.Script));
SyntaxNode syntaxNode = syntaxTree.GetRoot(); // The root will never have an identifier token
// When
string tokenValueText = InternalsHelper.GetIdentifierTokenValueText(syntaxNode);
// Then
Assert.IsNull(tokenValueText);
}
public void GetIdentifierTokenValueTextReturnsTokenValueTextForValidNode()
{
// Given
SyntaxTree syntaxTree = Microsoft.CodeAnalysis.CSharp.CSharpSyntaxTree.ParseText("int c = 0;",
InternalsHelper.GetCSharpParseOptionsForSourceCodeKind(SourceCodeKind.Script));
SyntaxToken syntaxToken = syntaxTree.GetRoot()
.DescendantNodesAndTokens()
.Where(x => x.IsToken)
.Select(x => x.AsToken())
.First(x => Microsoft.CodeAnalysis.CSharp.CSharpExtensions.Kind(x) == Microsoft.CodeAnalysis.CSharp.SyntaxKind.IdentifierToken);
SyntaxNode syntaxNode = syntaxToken.Parent;
// When
string tokenValueText = InternalsHelper.GetIdentifierTokenValueText(syntaxNode);
// Then
Assert.AreEqual("c", tokenValueText);
}
