Swift: remove / delimiters from regex extracted patterns

Author: redsun82

swift/extractor/translators/ExprTranslator.cpp

@@ -598,9 +598,12 @@ codeql::AppliedPropertyWrapperExpr ExprTranslator::translateAppliedPropertyWrapp
   return entry;
 }
 
-codeql::RegexLiteralExpr ExprTranslator::translateRegexLiteralExpr(const swift::RegexLiteralExpr& expr) {
+codeql::RegexLiteralExpr ExprTranslator::translateRegexLiteralExpr(
+    const swift::RegexLiteralExpr& expr) {
   auto entry = createExprEntry(expr);
-  entry.pattern = expr.getRegexText().str();
+  auto pattern = expr.getRegexText();
+  // the pattern has enclosing '/' delimiters, we'd rather get it without
+  entry.pattern = pattern.substr(1, pattern.size() - 2);
   entry.version = expr.getVersion();
   return entry;
 }

swift/ql/test/extractor-tests/generated/expr/RegexLiteralExpr/RegexLiteralExpr.expected

@@ -1,2 +1,2 @@
-| regex.swift:3:5:3:5 | ... | hasType: | yes | getPattern: | /a.*a/ | getVersion: | 1 |
-| regex.swift:4:5:4:5 | ... | hasType: | yes | getPattern: | /the number (\\d+)/ | getVersion: | 1 |
+| regex.swift:3:5:3:5 | ... | hasType: | yes | getPattern: | a.*a | getVersion: | 1 |
+| regex.swift:4:5:4:5 | ... | hasType: | yes | getPattern: | the number (\\d+) | getVersion: | 1 |