public IEnumerable <T> GetTokens(LineToken input)
{
if (input == null)
{
throw new ArgumentNullException(nameof(input));
}
if (input.Kind != LineTokenKind.Line)
{
throw new ArgumentException($"Input must be line token of kind '{LineTokenKind.Line}', but is kind '{input.Kind}'");
}
var currentValue = new StringBuilder();
var startColumn = 1;
if (input.Value !.Length == 0)
{
yield return(CreateEolToken(input.LineNumber, startColumn));
yield break;
}
for (var i = 0; i < input.Value.Length; i++)
{
var currentChar = input.Value[i];
if (TryMatchSingleCharToken(currentChar, input.LineNumber, i + 1, out var matchedToken))
{
if (currentValue.Length > 0)
{
var value = currentValue.GetValueAndClear();
yield return(CreateStringToken(value, input.LineNumber, startColumn));
startColumn += value.Length;
}
yield return(matchedToken);
startColumn += 1;
}
else
{
currentValue.Append(currentChar);
}
}
// if any input is left in currentValue, return it as String token
if (currentValue.Length > 0)
{
var value = currentValue.GetValueAndClear();
yield return(CreateStringToken(value, input.LineNumber, startColumn));
startColumn += value.Length;
}
yield return(CreateEolToken(input.LineNumber, startColumn));
}
/// <summary>
/// Determines if the specified input is the start of a footer (i.e. the line starts with a valid footer key)
/// </summary>
public static bool IsFooter(LineToken input)
{
if (input is null)
{
throw new ArgumentNullException(nameof(input));
}
if (input.Kind != LineTokenKind.Line)
{
return(false);
}
return(new FooterParser(input).IsFooterStart());
}
private HeaderParser(LineToken input)
{
if (input == null)
{
throw new ArgumentNullException(nameof(input));
}
if (input.Kind != LineTokenKind.Line)
{
throw new ArgumentException($"Input must be line token of kind '{LineTokenKind.Line}', but is kind '{input.Kind}'");
}
m_Input = input;
}
public static CommitMessageHeader Parse(LineToken input)
{
var parser = new HeaderParser(input);
return(parser.Parse());
}
/// <summary> /// Parses the specified commit footer. /// </summary> public static CommitMessageFooter Parse(LineToken input) => new FooterParser(input).Parse();