Implement an isBytecodeArchive method to determine if an archive contains

bytecode file members or not.
Patch Contributed By Adam Treat


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20338 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 9 insertions, 0 deletions

diff --git a/include/llvm/Bytecode/Archive.h b/include/llvm/Bytecode/Archive.h
index 102bb5c507..3805d0b249 100644
--- a/include/llvm/Bytecode/Archive.h
+++ b/include/llvm/Bytecode/Archive.h
@@ -414,6 +414,15 @@ class Archive {
       std::set<std::string>& symbols,     ///< Symbols to be sought
       std::set<ModuleProvider*>& modules  ///< The modules matching \p symbols
     );
+    
+    /// This method determines whether the archive is a properly formed llvm 
+    /// bytecode archive.  It first makes sure the symbol table has been loaded 
+    /// and has a non-zero size.  If it does, then it is an archive.  If not, 
+    /// then it tries to load all the bytecode modules of the archive.  Finally, 
+    /// it returns whether it was successfull.
+    /// @returns true if the archive is a proper llvm bytecode archive
+    /// @brief Determine whether the archive is a proper llvm bytecode archive.
+    bool isBytecodeArchive();
 
   /// @}
   /// @name Mutators