public void ScanSingleLineFalseTest()
{
var lexer = Lexer.CreateState("/X");
Assert.Throws <InvalidOperationException>(() =>
CommentScanner.ScanSingleLine(lexer, ref this.token));
}
public void MultiLineErrorPositionTest()
{
var lexer = Lexer.CreateState("/*/");
_ = CommentScanner.ScanMultiLine(lexer, ref this.token);
Assert.Equal(3, lexer.Src.Index);
}
public void ScanMultiLineTrueTest()
{
var lexer = Lexer.CreateState("/**/");
bool result = CommentScanner.ScanMultiLine(lexer, ref this.token);
Assert.True(result);
}
public void MultiLineNewLinePositionTest()
{
var lexer = Lexer.CreateState("/*" + Environment.NewLine + "*/");
_ = CommentScanner.ScanMultiLine(lexer, ref this.token);
Assert.Equal(5, lexer.Src.Index);
}
public void ScanMultiLineFalseTest()
{
foreach (string text in new[] { "/*/", "/**", "/*" })
{
var lexer = Lexer.CreateState(text);
bool result = CommentScanner.ScanMultiLine(lexer, ref this.token);
Assert.False(result);
}
}
public void ScanMultiLineNewLineTest()
{
string comment = "/*" + Environment.NewLine + "*/";
var lexer = Lexer.CreateState(comment);
bool result = CommentScanner.ScanMultiLine(lexer, ref this.token);
Assert.True(result);
Assert.Equal(comment, this.token.Value);
}
public void TestNegativeBlockComments(string content)
{
var input = new TextInputRange {
File = new TextFile {
Content = content,
Filename = ""
}
};
var exception = Assert.Throws <Exception>(() => CommentScanner.Scan(input));
Assert.True(exception.Message.Equals(value: "Line Comment not Escaped."));
}
public void TestNegativeLineComments(string content)
{
var input = new TextInputRange {
File = new TextFile {
Content = content,
Filename = ""
}
};
var output = CommentScanner.Scan(input);
Assert.IsFalse(output);
Assert.AreEqual(content[index: 0], input.EndChar);
}
public void TestPositiveLineComments(string content)
{
var input = new TextInputRange {
File = new TextFile {
Content = content,
Filename = ""
}
};
var output = CommentScanner.Scan(input);
Assert.IsTrue(output);
Assert.IsFalse(input.IsEndValid);
}
public void TestPositiveBlockComments(string content, int line)
{
var input = new TextInputRange {
File = new TextFile {
Content = content,
Filename = ""
}
};
var output = CommentScanner.Scan(input);
Assert.IsTrue(output);
Assert.IsFalse(input.IsEndValid);
Assert.AreEqual(line, input.End.Line);
}
public void TestNegativeLineEndLineComments(string content)
{
var input = new TextInputRange {
File = new TextFile {
Content = content,
Filename = ""
}
};
var output = CommentScanner.Scan(input);
Assert.IsTrue(output);
Assert.IsTrue(input.IsEndValid);
Assert.AreEqual(expected: '\n', actual: input.EndChar);
}
/// <summary>
/// Used to analyse the current textwindow and retrieve/skip any
/// trivia which includes things such as whitespace, newlines,
/// comments and multi-line comments
/// Returns them as a flat list
/// </summary>
/// <param name="bIsTrailing"></param>
/// <returns></returns>
private List <SyntaxTrivia> LexSyntaxTrivia(Boolean bIsTrailing = false)
{
// Initialise variables
List <SyntaxTrivia> aoReturnList = new List <SyntaxTrivia>();
Boolean bNewLineCharFound = false;
// Just keep lexing until we are told to stop
// or we run out of characters to process
while (TextWindow.HasCharactersLeftToProcess())
{
// Check the next character and switch based on that
char xcNextChar = TextWindow.PeekCharacter();
if (SyntaxUtilities.IsWhiteSpace(xcNextChar))
{
// Try and scan the item
SyntaxTrivia oNewItem = WhiteSpaceScanner.Scan(TextWindow);
// Insert it
aoReturnList.Add(oNewItem);
}
else if (SyntaxUtilities.IsNewLineCharacter(xcNextChar))
{
bNewLineCharFound = true;
// Do not steal trailing comments if a newline has been found
if (bIsTrailing)
{
break;
}
// Try and scan the item
SyntaxTrivia oNewItem = NewLineScanner.Scan(TextWindow);
// Insert it
aoReturnList.Add(oNewItem);
}
// Handle Comments
else if (xcNextChar == '-')
{
// Do not touch a single -, only play with --
if (TextWindow.PeekCharacter(1) != '-')
{
return(aoReturnList);
}
// Only pick up inlines if they are directly trailing an item
// Do not steal another nodes leading comments
if (bNewLineCharFound && bIsTrailing)
{
break;
}
SyntaxTrivia oComment = CommentScanner.ScanSingleLineComment(TextWindow);
aoReturnList.Add(oComment);
}
else if (xcNextChar == '/')
{
// Do not touch a single /, only play with /*
if (TextWindow.PeekCharacter(1) != '*')
{
return(aoReturnList);
}
// Do not steal trailing comments if a newline has been found
if (bNewLineCharFound && bIsTrailing)
{
break;
}
SyntaxTrivia oComment = CommentScanner.ScanMultiLineComment(TextWindow);
aoReturnList.Add(oComment);
}
else
{
break;
}
}
return(aoReturnList);
}
public void ScanSingleLineNullTest()
{
Assert.Throws <ArgumentNullException>(() =>
CommentScanner.ScanSingleLine(null, ref this.token));
}