public void Tokenization()
{
string source = "void f(int x); void g(int x) { f(x); }";
using (var empty = disposables.WriteToEmpty(source))
{
var file = empty.GetFile(TestFiles.Empty);
var range = SourceRange.Create(
file.GetLocationFromOffset((uint)source.IndexOf("f(x)")),
file.GetLocationFromOffset((uint)(source.IndexOf(" }"))));
var tokens = empty.Tokenize(range);
CollectionAssert.AreEqual(
new[] { "f", "(", "x", ")", ";" },
tokens.ToArray(token => token.GetSpelling()));
Assert.AreEqual(TokenKind.Identifier, tokens[0].GetKind());
Assert.AreEqual("f", tokens[0].GetSpelling());
Assert.AreEqual(
file.GetLocationFromOffset((uint)source.IndexOf("f(x)")),
tokens[0].GetLocation());
Assert.AreEqual(
(uint)source.IndexOf("f(x)"),
tokens[0].GetExtent().GetStart().Offset);
Assert.AreEqual(
(uint)source.IndexOf("f(x)") + 1,
tokens[0].GetExtent().GetEnd().Offset);
Assert.AreEqual(TokenKind.Punctuation, tokens[1].GetKind());
Assert.AreEqual("(", tokens[1].GetSpelling());
Assert.AreEqual(TokenKind.Identifier, tokens[2].GetKind());
Assert.AreEqual("x", tokens[2].GetSpelling());
Assert.AreEqual(TokenKind.Punctuation, tokens[3].GetKind());
Assert.AreEqual(")", tokens[3].GetSpelling());
}
}
/// <summary>
/// Gets a source range associated with the diagnostic.
/// </summary>
/// <param name="index">The zero-based index specifying which range to extract.</param>
/// <returns>
/// The requested source range, or null if <paramref name="index"/> is invalid.
/// </returns>
/// <remarks>
/// A diagnostic's source ranges highlight important elements in the source code. On the
/// command line, Clang displays source ranges by underlining them with '~' characters.
/// </remarks>
public SourceRange GetRange(uint index)
{
ThrowIfDisposed();
var cxSourceRange = NativeMethods.clang_getDiagnosticRange(Ptr, index);
return(SourceRange.Create(cxSourceRange, TranslationUnit));
}
public void GetStartAndGetEndReturnOriginalLocations()
{
var add = disposables.Add;
var file = add.GetFile(TestFiles.AddSource);
var begin = file.GetLocation(1, 1);
var end = file.GetLocation(2, 1);
var range = SourceRange.Create(begin, end);
Assert.AreEqual(begin, range.GetStart());
Assert.AreEqual(end, range.GetEnd());
}
public void CreateInvalidRangeReturnsNull()
{
var add = disposables.Add;
var file = add.GetFile(TestFiles.AddSource);
var range = SourceRange.Create(file.GetLocation(1, 1), file.GetLocation(2, 1));
Assert.IsNotNull(range);
range = SourceRange.Create(
add.GetFile(TestFiles.AddHeader).GetLocation(1, 1),
file.GetLocation(1, 1));
Assert.IsNull(range);
}
/// <summary>
/// Gets the replacement information for a fix-it.
/// </summary>
/// <param name="index">The zero-based index of the fix-it.</param>
/// <returns>
/// replacementRange: The source range whose contents will be replaced with the returned
/// replacement string. Note that source ranges are half-open ranges [a, b), so the source
/// code should be replaced from a and up to (but not including) b.<para/>
/// replacementText: A string containing text that should be replace the source code
/// indicated by the replacementRange.
/// </returns>
/// <remarks>
/// Fix-its are described in terms of a source range whose contents should be replaced by a
/// string. This approach generalizes over three kinds of operations: removal of source
/// code (the range covers the code to be removed and the replacement string is empty),
/// replacement of source code (the range covers the code to be replaced and the
/// replacement string provides the new code), and insertion (both the start and end of the
/// range point at the insertion location, and the replacement string provides the text to
/// insert).
/// </remarks>
public (SourceRange replacementRange, string replacementText) GetFixIt(uint index)
{
ThrowIfDisposed();
CXSourceRange cxSourceRange;
var cxString = NativeMethods.clang_getDiagnosticFixIt(
Ptr,
index,
&cxSourceRange);
var replacementRange = SourceRange.Create(cxSourceRange, TranslationUnit);
using (var str = new String(cxString))
{
return(replacementRange : replacementRange, replacementText : str.ToString());
}
}