[clang-format] Support of TableGen value annotations. (#80299)

This implements the annotation of the values in TableGen.
The main changes are,

- parseTableGenValue(), the simplified parser method for the syntax of
values.
- modified consumeToken() to parseTableGenValue in 'if', 'assert' and
after '='.
- modified parseParens() to call parseTableGenValue inside.
- modified parseSquare() to to call parseTableGenValue inside, with
skipping separator tokens.
- modified parseAngle() to call parseTableGenValue inside, with skipping
separator tokens.

1 files changed, 1 insertions, 1 deletions

diff --git a/clang/lib/Format/FormatTokenLexer.cpp b/clang/lib/Format/FormatTokenLexer.cpp
index a57659f..492e7e9 100644
--- a/clang/lib/Format/FormatTokenLexer.cpp
+++ b/clang/lib/Format/FormatTokenLexer.cpp
@@ -812,7 +812,7 @@ void FormatTokenLexer::handleTableGenMultilineString() {
   auto CloseOffset = Lex->getBuffer().find("}]", OpenOffset);
   if (CloseOffset == StringRef::npos)
     return;
-  auto Text = Lex->getBuffer().substr(OpenOffset, CloseOffset + 2);
+  auto Text = Lex->getBuffer().substr(OpenOffset, CloseOffset - OpenOffset + 2);
   MultiLineString->TokenText = Text;
   resetLexer(SourceMgr.getFileOffset(
       Lex->getSourceLocation(Lex->getBufferLocation() - 2 + Text.size())));