Check in LLVM r95781.

1 files changed, 89 insertions, 0 deletions

diff --git a/lib/Bitcode/Reader/BitReader.cpp b/lib/Bitcode/Reader/BitReader.cpp
new file mode 100644
index 0000000..1facbc3
--- /dev/null
+++ b/lib/Bitcode/Reader/BitReader.cpp
@@ -0,0 +1,89 @@
+//===-- BitReader.cpp -----------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm-c/BitReader.h"
+#include "llvm/Bitcode/ReaderWriter.h"
+#include "llvm/LLVMContext.h"
+#include "llvm/Support/MemoryBuffer.h"
+#include <string>
+#include <cstring>
+
+using namespace llvm;
+
+/* Builds a module from the bitcode in the specified memory buffer, returning a
+   reference to the module via the OutModule parameter. Returns 0 on success.
+   Optionally returns a human-readable error message via OutMessage. */
+LLVMBool LLVMParseBitcode(LLVMMemoryBufferRef MemBuf,
+                          LLVMModuleRef *OutModule, char **OutMessage) {
+  std::string Message;
+  
+  *OutModule = wrap(ParseBitcodeFile(unwrap(MemBuf), getGlobalContext(),  
+                                     &Message));
+  if (!*OutModule) {
+    if (OutMessage)
+      *OutMessage = strdup(Message.c_str());
+    return 1;
+  }
+  
+  return 0;
+}
+
+LLVMBool LLVMParseBitcodeInContext(LLVMContextRef ContextRef,
+                                   LLVMMemoryBufferRef MemBuf,
+                                   LLVMModuleRef *OutModule,
+                                   char **OutMessage) {
+  std::string Message;
+  
+  *OutModule = wrap(ParseBitcodeFile(unwrap(MemBuf), *unwrap(ContextRef),
+                                     &Message));
+  if (!*OutModule) {
+    if (OutMessage)
+      *OutMessage = strdup(Message.c_str());
+    return 1;
+  }
+  
+  return 0;
+}
+
+/* Reads a module from the specified path, returning via the OutModule parameter
+   a module provider which performs lazy deserialization. Returns 0 on success.
+   Optionally returns a human-readable error message via OutMessage. */ 
+LLVMBool LLVMGetBitcodeModuleProvider(LLVMMemoryBufferRef MemBuf,
+                                      LLVMModuleProviderRef *OutMP,
+                                      char **OutMessage) {
+  std::string Message;
+
+  *OutMP = reinterpret_cast<LLVMModuleProviderRef>(
+    getLazyBitcodeModule(unwrap(MemBuf), getGlobalContext(), &Message));
+                                         
+  if (!*OutMP) {
+    if (OutMessage)
+      *OutMessage = strdup(Message.c_str());
+      return 1;
+  }
+
+  return 0;
+}
+
+LLVMBool LLVMGetBitcodeModuleProviderInContext(LLVMContextRef ContextRef,
+                                               LLVMMemoryBufferRef MemBuf,
+                                               LLVMModuleProviderRef *OutMP,
+                                               char **OutMessage) {
+  std::string Message;
+  
+  *OutMP = reinterpret_cast<LLVMModuleProviderRef>(
+    getLazyBitcodeModule(unwrap(MemBuf), *unwrap(ContextRef), &Message));
+  if (!*OutMP) {
+    if (OutMessage)
+      *OutMessage = strdup(Message.c_str());
+    return 1;
+  }
+  
+  return 0;
+}