private static PkgdefSegment ParseSegment(PkgdefTokenizer tokenizer, Action <PkgdefIssue> onIssue)
{
PreCondition.AssertNotNull(tokenizer, nameof(tokenizer));
PreCondition.AssertTrue(tokenizer.HasCurrent(), "tokenizer.HasCurrent()");
PreCondition.AssertNotNull(onIssue, nameof(onIssue));
PkgdefSegment result;
switch (tokenizer.GetCurrent().GetTokenType())
{
case PkgdefTokenType.Whitespace:
result = PkgdefSegment.Whitespace(tokenizer.GetCurrent().GetStartIndex(), tokenizer.GetCurrent().GetText());
tokenizer.Next();
break;
case PkgdefTokenType.NewLine:
result = PkgdefSegment.NewLine(tokenizer.GetCurrent().GetStartIndex(), tokenizer.GetCurrent().GetText());
tokenizer.Next();
break;
case PkgdefTokenType.ForwardSlash:
result = PkgdefDocument.ParseLineComment(tokenizer, onIssue);
break;
case PkgdefTokenType.LeftSquareBracket:
result = PkgdefDocument.ParseRegistryKeyPath(tokenizer, onIssue);
break;
case PkgdefTokenType.AtSign:
case PkgdefTokenType.DoubleQuote:
result = PkgdefDocument.ParseRegistryKeyDataItem(tokenizer, onIssue);
break;
default:
result = PkgdefSegment.Unrecognized(tokenizer.GetCurrent().GetStartIndex(), tokenizer.GetCurrent().GetText());
tokenizer.Next();
break;
}
return(result);
}
internal static PkgdefSegment ParseLineComment(PkgdefTokenizer tokenizer, Action <PkgdefIssue> onIssue)
{
PreCondition.AssertNotNull(tokenizer, nameof(tokenizer));
PreCondition.AssertTrue(tokenizer.HasCurrent(), "tokenizer.HasCurrent()");
PreCondition.AssertEqual(tokenizer.GetCurrent().GetTokenType(), PkgdefTokenType.ForwardSlash, "tokenizer.GetCurrent().GetTokenType()");
PreCondition.AssertNotNull(onIssue, nameof(onIssue));
PkgdefSegment result;
int startIndex = tokenizer.TakeCurrent().GetStartIndex();
StringBuilder builder = new StringBuilder().Append('/');
if (!tokenizer.HasCurrent())
{
onIssue(new PkgdefIssue(startIndex, 1, "Missing line-comment's second forward slash ('/')."));
result = PkgdefSegment.Unrecognized(startIndex, builder.ToString());
}
else if (tokenizer.GetCurrent().GetTokenType() != PkgdefTokenType.ForwardSlash)
{
onIssue.Invoke(new PkgdefIssue(startIndex + 1, 1, "Expected line-comment's second forward slash ('/')."));
result = PkgdefSegment.Unrecognized(startIndex, builder.ToString());
}
else
{
builder.Append('/');
tokenizer.Next();
while (tokenizer.HasCurrent() && tokenizer.GetCurrent().GetTokenType() != PkgdefTokenType.NewLine)
{
builder.Append(tokenizer.TakeCurrent().GetText());
}
string text = builder.ToString();
result = PkgdefSegment.LineComment(startIndex, text);
}
return(result);
}
private static ClassificationSpan CreateClassificationSpan(ITextSnapshot textSnapshot, PkgdefSegment segment, IClassificationType classificationType)
{
SnapshotSpan segmentSnapshotSpan = new SnapshotSpan(textSnapshot, segment.GetStartIndex(), segment.GetLength());
return(new ClassificationSpan(segmentSnapshotSpan, classificationType));
}