[Tooling] Add operator== to CompileCommand

Summary:
It does the obvious thing of comparing all fields.  This will be needed
for a clangd patch I have in the pipeline.

Subscribers: dblaikie, ilya-biryukov, ioeric, cfe-commits

Differential Revision: https://reviews.llvm.org/D49265

llvm-svn: 337284

1 files changed, 9 insertions, 0 deletions

diff --git a/clang/include/clang/Tooling/CompilationDatabase.h b/clang/include/clang/Tooling/CompilationDatabase.h
index 185e4968797..37e515fdc09 100644
--- a/clang/include/clang/Tooling/CompilationDatabase.h
+++ b/clang/include/clang/Tooling/CompilationDatabase.h
@@ -59,6 +59,15 @@ struct CompileCommand {
 
   /// The output file associated with the command.
   std::string Output;
+
+  friend bool operator==(const CompileCommand &LHS, const CompileCommand &RHS) {
+    return LHS.Directory == RHS.Directory && LHS.Filename == RHS.Filename &&
+           LHS.CommandLine == RHS.CommandLine && LHS.Output == RHS.Output;
+  }
+
+  friend bool operator!=(const CompileCommand &LHS, const CompileCommand &RHS) {
+    return !(LHS == RHS);
+  }
 };
 
 /// Interface for compilation databases.