[PATCH] Introduce a GlobalList ctor which takes a MemoryBuffer to make it more unit testable.

[Peter Collingbourne]

Hi kcc,

http://llvm-reviews.chandlerc.com/D1090

Files:
  include/llvm/Transforms/Utils/GlobalList.h
  lib/Transforms/Utils/GlobalList.cpp

Index: include/llvm/Transforms/Utils/GlobalList.h
===================================================================
--- include/llvm/Transforms/Utils/GlobalList.h
+++ include/llvm/Transforms/Utils/GlobalList.h
@@ -35,13 +35,16 @@
 namespace llvm {
 class Function;
 class GlobalVariable;
+class MemoryBuffer;
 class Module;
 class Regex;
 class StringRef;
 
 class GlobalList {
  public:
   GlobalList(const StringRef Path);
+  GlobalList(MemoryBuffer *MB);
+
   // Returns whether either this function or it's source file are blacklisted.
   bool isIn(const Function &F) const;
   // Returns whether either this global or it's source file are blacklisted.
@@ -53,6 +56,7 @@
  private:
   StringMap<Regex*> Entries;
 
+  void init(MemoryBuffer *MB);
   bool inSection(const StringRef Section, const StringRef Query) const;
 };
 
Index: lib/Transforms/Utils/GlobalList.cpp
===================================================================
--- lib/Transforms/Utils/GlobalList.cpp
+++ lib/Transforms/Utils/GlobalList.cpp
@@ -39,9 +39,17 @@
                        EC.message());
   }
 
+  init(File.take());
+}
+
+GlobalList::GlobalList(MemoryBuffer *MB) {
+  init(MB);
+}
+
+void GlobalList::init(MemoryBuffer *MB) {
   // Iterate through each line in the blacklist file.
   SmallVector<StringRef, 16> Lines;
-  SplitString(File.take()->getBuffer(), Lines, "\n\r");
+  SplitString(MB->getBuffer(), Lines, "\n\r");
   StringMap<std::string> Regexps;
   for (SmallVector<StringRef, 16>::iterator I = Lines.begin(), E = Lines.end();
        I != E; ++I) {
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