From 4990e83b7bdc50caba375f37ece7f4c04000640c Mon Sep 17 00:00:00 2001
From: Chris Bieneman <beanz@apple.com>
Date: Tue, 27 Jan 2015 22:21:06 +0000
Subject: [PATCH] Re-landing changes to use ArrayRef instead of
 SmallVectorImpl, and new API test.

This contains the changes from r227148 & r227154, and also fixes to the test case to properly clean up the stack options.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@227255 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/llvm/Support/CommandLine.h    |  3 ++-
 lib/Support/CommandLine.cpp           |  3 +--
 unittests/Support/CommandLineTest.cpp | 31 ++++++++++++++++++++++++---
 3 files changed, 31 insertions(+), 6 deletions(-)

diff --git a/include/llvm/Support/CommandLine.h b/include/llvm/Support/CommandLine.h
index e53ac06a3cd..efa17219585 100644
--- a/include/llvm/Support/CommandLine.h
+++ b/include/llvm/Support/CommandLine.h
@@ -20,6 +20,7 @@
 #ifndef LLVM_SUPPORT_COMMANDLINE_H
 #define LLVM_SUPPORT_COMMANDLINE_H
 
+#include "llvm/ADT/ArrayRef.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/StringMap.h"
 #include "llvm/ADT/Twine.h"
@@ -1938,7 +1939,7 @@ void HideUnrelatedOptions(cl::OptionCategory &Category);
 /// Some tools (like clang-format) like to be able to hide all options that are
 /// not specific to the tool. This function allows a tool to specify a single
 /// option category to display in the -help output.
-void HideUnrelatedOptions(SmallVectorImpl<cl::OptionCategory *> &Categories);
+void HideUnrelatedOptions(ArrayRef<const cl::OptionCategory *> Categories);
 
 } // End namespace cl
 
diff --git a/lib/Support/CommandLine.cpp b/lib/Support/CommandLine.cpp
index 4cd6f0c5f0a..35c49be02ce 100644
--- a/lib/Support/CommandLine.cpp
+++ b/lib/Support/CommandLine.cpp
@@ -1861,8 +1861,7 @@ void cl::HideUnrelatedOptions(cl::OptionCategory &Category) {
   }
 }
 
-void cl::HideUnrelatedOptions(
-    SmallVectorImpl<cl::OptionCategory *> &Categories) {
+void cl::HideUnrelatedOptions(ArrayRef<const cl::OptionCategory *> Categories) {
   auto CategoriesBegin = Categories.begin();
   auto CategoriesEnd = Categories.end();
   StringMap<cl::Option *> Options;
diff --git a/unittests/Support/CommandLineTest.cpp b/unittests/Support/CommandLineTest.cpp
index 4fa14e252fb..f0ef020c7ba 100644
--- a/unittests/Support/CommandLineTest.cpp
+++ b/unittests/Support/CommandLineTest.cpp
@@ -231,8 +231,8 @@ TEST(CommandLineTest, AliasRequired) {
 }
 
 TEST(CommandLineTest, HideUnrelatedOptions) {
-  cl::opt<int> TestOption1("test-option-1");
-  cl::opt<int> TestOption2("test-option-2", cl::cat(TestCategory));
+  StackOption<int> TestOption1("hide-option-1");
+  StackOption<int> TestOption2("hide-option-2", cl::cat(TestCategory));
 
   cl::HideUnrelatedOptions(TestCategory);
 
@@ -241,7 +241,32 @@ TEST(CommandLineTest, HideUnrelatedOptions) {
   ASSERT_EQ(cl::NotHidden, TestOption2.getOptionHiddenFlag())
       << "Hid extra option that should be visable.";
 
-  StringMap<cl::Option*> Map;
+  StringMap<cl::Option *> Map;
+  cl::getRegisteredOptions(Map);
+  ASSERT_EQ(cl::NotHidden, Map["help"]->getOptionHiddenFlag())
+      << "Hid default option that should be visable.";
+}
+
+cl::OptionCategory TestCategory2("Test Options set 2", "Description");
+
+TEST(CommandLineTest, HideUnrelatedOptionsMulti) {
+  StackOption<int> TestOption1("multi-hide-option-1");
+  StackOption<int> TestOption2("multi-hide-option-2", cl::cat(TestCategory));
+  StackOption<int> TestOption3("multi-hide-option-3", cl::cat(TestCategory2));
+
+  const cl::OptionCategory *VisibleCategories[] = {&TestCategory,
+                                                   &TestCategory2};
+
+  cl::HideUnrelatedOptions(makeArrayRef(VisibleCategories));
+
+  ASSERT_EQ(cl::ReallyHidden, TestOption1.getOptionHiddenFlag())
+      << "Failed to hide extra option.";
+  ASSERT_EQ(cl::NotHidden, TestOption2.getOptionHiddenFlag())
+      << "Hid extra option that should be visable.";
+  ASSERT_EQ(cl::NotHidden, TestOption3.getOptionHiddenFlag())
+      << "Hid extra option that should be visable.";
+
+  StringMap<cl::Option *> Map;
   cl::getRegisteredOptions(Map);
   ASSERT_EQ(cl::NotHidden, Map["help"]->getOptionHiddenFlag())
       << "Hid default option that should be visable.";