kadircet created this revision.
kadircet added reviewers: MyDeveloperDay, curdeius.
kadircet requested review of this revision.
Herald added a project: clang.
Herald added a subscriber: cfe-commits.

Currently getStyle() fails immediately if FallbackStyle is not a
predefined style, even when it is not needed. This patch moves that evaluation
and bail-out to fallback-case, enabling getStyle() to succeed in cases where
FallbackStyle is malformed but not needed.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D95538

Files:
  clang/lib/Format/Format.cpp


Index: clang/lib/Format/Format.cpp
===================================================================
--- clang/lib/Format/Format.cpp
+++ clang/lib/Format/Format.cpp
@@ -2901,10 +2901,6 @@
   }
   FormatStyle Style = getLLVMStyle(guessLanguage(FileName, Code));
 
-  FormatStyle FallbackStyle = getNoStyle();
-  if (!getPredefinedStyle(FallbackStyleName, Style.Language, &FallbackStyle))
-    return make_string_error("Invalid fallback style \"" + FallbackStyleName);
-
   if (StyleName.startswith("{")) {
     // Parse YAML/JSON style from the command line.
     if (std::error_code ec = parseConfiguration(
@@ -2974,6 +2970,10 @@
     return make_string_error("Configuration file(s) do(es) not support " +
                              getLanguageName(Style.Language) + ": " +
                              UnsuitableConfigFiles);
+
+  FormatStyle FallbackStyle = getNoStyle();
+  if (!getPredefinedStyle(FallbackStyleName, Style.Language, &FallbackStyle))
+    return make_string_error("Invalid fallback style \"" + FallbackStyleName);
   return FallbackStyle;
 }
 


Index: clang/lib/Format/Format.cpp
===================================================================
--- clang/lib/Format/Format.cpp
+++ clang/lib/Format/Format.cpp
@@ -2901,10 +2901,6 @@
   }
   FormatStyle Style = getLLVMStyle(guessLanguage(FileName, Code));
 
-  FormatStyle FallbackStyle = getNoStyle();
-  if (!getPredefinedStyle(FallbackStyleName, Style.Language, &FallbackStyle))
-    return make_string_error("Invalid fallback style \"" + FallbackStyleName);
-
   if (StyleName.startswith("{")) {
     // Parse YAML/JSON style from the command line.
     if (std::error_code ec = parseConfiguration(
@@ -2974,6 +2970,10 @@
     return make_string_error("Configuration file(s) do(es) not support " +
                              getLanguageName(Style.Language) + ": " +
                              UnsuitableConfigFiles);
+
+  FormatStyle FallbackStyle = getNoStyle();
+  if (!getPredefinedStyle(FallbackStyleName, Style.Language, &FallbackStyle))
+    return make_string_error("Invalid fallback style \"" + FallbackStyleName);
   return FallbackStyle;
 }
 
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