Author: Gedare Bloom
Date: 2024-12-17T08:05:01-08:00
New Revision: 57c161a6479fb70a31553e2f9bc1efa46262aa92

URL: 
https://github.com/llvm/llvm-project/commit/57c161a6479fb70a31553e2f9bc1efa46262aa92
DIFF: 
https://github.com/llvm/llvm-project/commit/57c161a6479fb70a31553e2f9bc1efa46262aa92.diff

LOG: [clang-format] Detect nesting in template strings (#119989)

The helper to check if a token is in a template string scans too far
backward. It should stop if a different scope is found.

Fixes #107571

Added: 
    

Modified: 
    clang/lib/Format/ContinuationIndenter.cpp
    clang/unittests/Format/FormatTestJS.cpp

Removed: 
    


################################################################################
diff  --git a/clang/lib/Format/ContinuationIndenter.cpp 
b/clang/lib/Format/ContinuationIndenter.cpp
index aed86c1fb99551..9ffdc044e6784d 100644
--- a/clang/lib/Format/ContinuationIndenter.cpp
+++ b/clang/lib/Format/ContinuationIndenter.cpp
@@ -826,8 +826,10 @@ void ContinuationIndenter::addTokenOnCurrentLine(LineState 
&State, bool DryRun,
     for (const auto *Prev = &Tok; Prev; Prev = Prev->Previous) {
       if (Prev->is(TT_TemplateString) && Prev->opensScope())
         return true;
-      if (Prev->is(TT_TemplateString) && Prev->closesScope())
+      if (Prev->opensScope() ||
+          (Prev->is(TT_TemplateString) && Prev->closesScope())) {
         break;
+      }
     }
     return false;
   };

diff  --git a/clang/unittests/Format/FormatTestJS.cpp 
b/clang/unittests/Format/FormatTestJS.cpp
index 663b00ca7af628..78c9f887a159b1 100644
--- a/clang/unittests/Format/FormatTestJS.cpp
+++ b/clang/unittests/Format/FormatTestJS.cpp
@@ -2161,6 +2161,13 @@ TEST_F(FormatTestJS, TemplateStringMultiLineExpression) {
                "                          aaaa:  aaaaa,\n"
                "                          bbbb:  bbbbb,\n"
                "                        })}`;");
+
+  verifyFormat("`${\n"
+               "    (\n"
+               "        FOOFOOFOOFOO____FOO_FOO_FO_FOO_FOOO -\n"
+               "            (barbarbarbar____bar_bar_bar_bar_bar_bar +\n"
+               "             bar_bar_bar_barbarbar___bar_bar_bar + 1),\n"
+               "        )}`;");
 }
 
 TEST_F(FormatTestJS, TemplateStringASI) {


        
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