YQL-19616: Generate Vim SQL syntax highlighting

Introduced a Vim syntax highlighting for YQL.
This is a replacement for an existing almost
manually written conguration. It uses regexes
generated from the original ANTLR4 grammar.

Now only Default lexer mode is supported.
commit_hash:85fa094593bd9d80373754a492b46ede1a50148d

1 files changed, 6 insertions, 1 deletions

diff --git a/yql/essentials/sql/v1/lexer/regex/generic.cpp b/yql/essentials/sql/v1/lexer/regex/generic.cpp
index 83ad5b4155d..926c50dde2c 100644
--- a/yql/essentials/sql/v1/lexer/regex/generic.cpp
+++ b/yql/essentials/sql/v1/lexer/regex/generic.cpp
@@ -130,7 +130,12 @@ namespace NSQLTranslationV1 {
 
         TStringBuilder body;
         for (const auto& pattern : patterns) {
-            body << "(" << pattern.Body << ")|";
+            TString regex = pattern.Body;
+            if (pattern.Body.Contains('|')) {
+                regex.prepend('(');
+                regex.append(')');
+            }
+            body << regex << "|";
         }
         Y_ENSURE(body.back() == '|');
         body.pop_back();