1 //===- Parser.cpp - Main dispatch module for the Parser library -----------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This library implements the functionality defined in llvm/AsmParser/Parser.h 11 // 12 //===----------------------------------------------------------------------===// 13 14 #include "llvm/AsmParser/Parser.h" 15 #include "LLParser.h" 16 #include "llvm/IR/Module.h" 17 #include "llvm/Support/MemoryBuffer.h" 18 #include "llvm/Support/SourceMgr.h" 19 #include "llvm/Support/raw_ostream.h" 20 #include <cstring> 21 #include <system_error> 22 using namespace llvm; 23 24 Module *llvm::ParseAssembly(MemoryBuffer *F, 25 Module *M, 26 SMDiagnostic &Err, 27 LLVMContext &Context) { 28 SourceMgr SM; 29 SM.AddNewSourceBuffer(F, SMLoc()); 30 31 // If we are parsing into an existing module, do it. 32 if (M) 33 return LLParser(F, SM, Err, M).Run() ? nullptr : M; 34 35 // Otherwise create a new module. 36 std::unique_ptr<Module> M2(new Module(F->getBufferIdentifier(), Context)); 37 if (LLParser(F, SM, Err, M2.get()).Run()) 38 return nullptr; 39 return M2.release(); 40 } 41 42 Module *llvm::ParseAssemblyFile(const std::string &Filename, SMDiagnostic &Err, 43 LLVMContext &Context) { 44 ErrorOr<std::unique_ptr<MemoryBuffer>> FileOrErr = 45 MemoryBuffer::getFileOrSTDIN(Filename); 46 if (std::error_code EC = FileOrErr.getError()) { 47 Err = SMDiagnostic(Filename, SourceMgr::DK_Error, 48 "Could not open input file: " + EC.message()); 49 return nullptr; 50 } 51 52 return ParseAssembly(FileOrErr.get().release(), nullptr, Err, Context); 53 } 54 55 Module *llvm::ParseAssemblyString(const char *AsmString, Module *M, 56 SMDiagnostic &Err, LLVMContext &Context) { 57 MemoryBuffer *F = 58 MemoryBuffer::getMemBuffer(StringRef(AsmString), "<string>"); 59 60 return ParseAssembly(F, M, Err, Context); 61 } 62
