[PATCH] D152771: [docs] Fix LibTooling documentation for OptionsParser change

[Hironao OTSUBO via Phabricator via cfe-commits]

motemen created this revision.
motemen added reviewers: serge-sans-paille, nridge.
Herald added a project: All.
motemen requested review of this revision.
Herald added a project: clang.
Herald added a subscriber: cfe-commits.

Additional documentation fix per https://reviews.llvm.org/D94420


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D152771

Files:
  clang/docs/LibTooling.rst


Index: clang/docs/LibTooling.rst
===================================================================
--- clang/docs/LibTooling.rst
+++ clang/docs/LibTooling.rst
@@ -69,9 +69,15 @@
   static llvm::cl::OptionCategory MyToolCategory("my-tool options");
 
   int main(int argc, const char **argv) {
-    // CommonOptionsParser constructor will parse arguments and create a
-    // CompilationDatabase.  In case of error it will terminate the program.
-    CommonOptionsParser OptionsParser(argc, argv, MyToolCategory);
+    // CommonOptionsParser::create will parse arguments and create a
+    // CompilationDatabase.
+    auto ExpectedParser = CommonOptionsParser::create(argc, argv, MyToolCategory);
+    if (!ExpectedParser) {
+      // Fail gracefully for unsupported options.
+      llvm::errs() << ExpectedParser.takeError();
+      return 1;
+    }
+    CommonOptionsParser &OptionsParser = ExpectedParser.get();
 
     // Use OptionsParser.getCompilations() and OptionsParser.getSourcePathList()
     // to retrieve CompilationDatabase and the list of input file paths.
@@ -133,7 +139,13 @@
   static cl::extrahelp MoreHelp("\nMore help text...\n");
 
   int main(int argc, const char **argv) {
-    CommonOptionsParser OptionsParser(argc, argv, MyToolCategory);
+    auto ExpectedParser = CommonOptionsParser::create(argc, argv, MyToolCategory);
+    if (!ExpectedParser) {
+      // Fail gracefully for unsupported options.
+      llvm::errs() << ExpectedParser.takeError();
+      return 1;
+    }
+    CommonOptionsParser &OptionsParser = ExpectedParser.get();
     ClangTool Tool(OptionsParser.getCompilations(),
                    OptionsParser.getSourcePathList());
     return Tool.run(newFrontendActionFactory<clang::SyntaxOnlyAction>().get());


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