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Gordon Henriksenbbc65972007-12-11 00:20:48 +00001//===-- BitReader.cpp -----------------------------------------------------===//
2//
3// The LLVM Compiler Infrastructure
4//
Chris Lattner4ee451d2007-12-29 20:36:04 +00005// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
Gordon Henriksenbbc65972007-12-11 00:20:48 +00007//
8//===----------------------------------------------------------------------===//
9
10#include "llvm-c/BitReader.h"
Eric Christopher3e397312013-04-22 22:47:22 +000011#include "llvm/Wrap.h"
Gordon Henriksenbbc65972007-12-11 00:20:48 +000012#include "llvm/Bitcode/ReaderWriter.h"
Chandler Carruth0b8c9a82013-01-02 11:36:10 +000013#include "llvm/IR/LLVMContext.h"
Gordon Henriksenbbc65972007-12-11 00:20:48 +000014#include "llvm/Support/MemoryBuffer.h"
Anton Korobeynikovae9f3a32008-02-20 11:08:44 +000015#include <cstring>
Chandler Carruthd04a8d42012-12-03 16:50:05 +000016#include <string>
Gordon Henriksenbbc65972007-12-11 00:20:48 +000017
18using namespace llvm;
19
Gordon Henriksenda1435f2007-12-19 22:30:40 +000020/* Builds a module from the bitcode in the specified memory buffer, returning a
21 reference to the module via the OutModule parameter. Returns 0 on success.
Chris Lattnerd686c8e2010-01-09 22:27:07 +000022 Optionally returns a human-readable error message via OutMessage. */
23LLVMBool LLVMParseBitcode(LLVMMemoryBufferRef MemBuf,
24 LLVMModuleRef *OutModule, char **OutMessage) {
Daniel Dunbare44fc852010-02-15 21:08:22 +000025 return LLVMParseBitcodeInContext(wrap(&getGlobalContext()), MemBuf, OutModule,
26 OutMessage);
Owen Andersonc8897d92009-07-02 07:17:57 +000027}
28
Chris Lattnerd686c8e2010-01-09 22:27:07 +000029LLVMBool LLVMParseBitcodeInContext(LLVMContextRef ContextRef,
30 LLVMMemoryBufferRef MemBuf,
31 LLVMModuleRef *OutModule,
32 char **OutMessage) {
Owen Andersonc8897d92009-07-02 07:17:57 +000033 std::string Message;
Joe Abbey170a15e2012-11-25 15:23:39 +000034
Erick Tryzelaarccf9f2b2009-08-11 07:46:16 +000035 *OutModule = wrap(ParseBitcodeFile(unwrap(MemBuf), *unwrap(ContextRef),
Owen Anderson8b477ed2009-07-01 16:58:40 +000036 &Message));
Gordon Henriksenbbc65972007-12-11 00:20:48 +000037 if (!*OutModule) {
38 if (OutMessage)
39 *OutMessage = strdup(Message.c_str());
40 return 1;
41 }
Joe Abbey170a15e2012-11-25 15:23:39 +000042
Gordon Henriksenbbc65972007-12-11 00:20:48 +000043 return 0;
44}
45
Gordon Henriksenda1435f2007-12-19 22:30:40 +000046/* Reads a module from the specified path, returning via the OutModule parameter
47 a module provider which performs lazy deserialization. Returns 0 on success.
Joe Abbey170a15e2012-11-25 15:23:39 +000048 Optionally returns a human-readable error message via OutMessage. */
Erick Tryzelaardf7df072010-03-02 23:58:54 +000049LLVMBool LLVMGetBitcodeModuleInContext(LLVMContextRef ContextRef,
50 LLVMMemoryBufferRef MemBuf,
51 LLVMModuleRef *OutM,
52 char **OutMessage) {
Gordon Henriksenda1435f2007-12-19 22:30:40 +000053 std::string Message;
Joe Abbey170a15e2012-11-25 15:23:39 +000054
Erick Tryzelaardf7df072010-03-02 23:58:54 +000055 *OutM = wrap(getLazyBitcodeModule(unwrap(MemBuf), *unwrap(ContextRef),
56 &Message));
57 if (!*OutM) {
Gordon Henriksenda1435f2007-12-19 22:30:40 +000058 if (OutMessage)
59 *OutMessage = strdup(Message.c_str());
60 return 1;
61 }
Joe Abbey170a15e2012-11-25 15:23:39 +000062
Gordon Henriksenda1435f2007-12-19 22:30:40 +000063 return 0;
Erick Tryzelaardf7df072010-03-02 23:58:54 +000064
65}
66
67LLVMBool LLVMGetBitcodeModule(LLVMMemoryBufferRef MemBuf, LLVMModuleRef *OutM,
68 char **OutMessage) {
69 return LLVMGetBitcodeModuleInContext(LLVMGetGlobalContext(), MemBuf, OutM,
70 OutMessage);
71}
72
73/* Deprecated: Use LLVMGetBitcodeModuleInContext instead. */
74LLVMBool LLVMGetBitcodeModuleProviderInContext(LLVMContextRef ContextRef,
75 LLVMMemoryBufferRef MemBuf,
76 LLVMModuleProviderRef *OutMP,
77 char **OutMessage) {
78 return LLVMGetBitcodeModuleInContext(ContextRef, MemBuf,
79 reinterpret_cast<LLVMModuleRef*>(OutMP),
80 OutMessage);
81}
82
83/* Deprecated: Use LLVMGetBitcodeModule instead. */
84LLVMBool LLVMGetBitcodeModuleProvider(LLVMMemoryBufferRef MemBuf,
85 LLVMModuleProviderRef *OutMP,
86 char **OutMessage) {
87 return LLVMGetBitcodeModuleProviderInContext(LLVMGetGlobalContext(), MemBuf,
88 OutMP, OutMessage);
Gordon Henriksenbbc65972007-12-11 00:20:48 +000089}