1 //===--- CreateInvocationFromCommandLine.cpp - CompilerInvocation from Args ==// 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 // Construct a compiler invocation object for command line driver arguments 11 // 12 //===----------------------------------------------------------------------===// 13 14 #include "clang/Frontend/Utils.h" 15 #include "clang/Basic/DiagnosticOptions.h" 16 #include "clang/Driver/ArgList.h" 17 #include "clang/Driver/Compilation.h" 18 #include "clang/Driver/Driver.h" 19 #include "clang/Driver/Options.h" 20 #include "clang/Driver/Tool.h" 21 #include "clang/Frontend/CompilerInstance.h" 22 #include "clang/Frontend/FrontendDiagnostic.h" 23 #include "llvm/Support/Host.h" 24 using namespace clang; 25 26 /// createInvocationFromCommandLine - Construct a compiler invocation object for 27 /// a command line argument vector. 28 /// 29 /// \return A CompilerInvocation, or 0 if none was built for the given 30 /// argument vector. 31 CompilerInvocation * 32 clang::createInvocationFromCommandLine(ArrayRef<const char *> ArgList, 33 IntrusiveRefCntPtr<DiagnosticsEngine> Diags) { 34 if (!Diags.getPtr()) { 35 // No diagnostics engine was provided, so create our own diagnostics object 36 // with the default options. 37 Diags = CompilerInstance::createDiagnostics(new DiagnosticOptions); 38 } 39 40 SmallVector<const char *, 16> Args; 41 Args.push_back("<clang>"); // FIXME: Remove dummy argument. 42 Args.insert(Args.end(), ArgList.begin(), ArgList.end()); 43 44 // FIXME: Find a cleaner way to force the driver into restricted modes. 45 Args.push_back("-fsyntax-only"); 46 47 // FIXME: We shouldn't have to pass in the path info. 48 driver::Driver TheDriver("clang", llvm::sys::getDefaultTargetTriple(), 49 "a.out", *Diags); 50 51 // Don't check that inputs exist, they may have been remapped. 52 TheDriver.setCheckInputsExist(false); 53 54 OwningPtr<driver::Compilation> C(TheDriver.BuildCompilation(Args)); 55 56 // Just print the cc1 options if -### was present. 57 if (C->getArgs().hasArg(driver::options::OPT__HASH_HASH_HASH)) { 58 C->PrintJob(llvm::errs(), C->getJobs(), "\n", true); 59 return 0; 60 } 61 62 // We expect to get back exactly one command job, if we didn't something 63 // failed. 64 const driver::JobList &Jobs = C->getJobs(); 65 if (Jobs.size() != 1 || !isa<driver::Command>(*Jobs.begin())) { 66 SmallString<256> Msg; 67 llvm::raw_svector_ostream OS(Msg); 68 C->PrintJob(OS, C->getJobs(), "; ", true); 69 Diags->Report(diag::err_fe_expected_compiler_job) << OS.str(); 70 return 0; 71 } 72 73 const driver::Command *Cmd = cast<driver::Command>(*Jobs.begin()); 74 if (StringRef(Cmd->getCreator().getName()) != "clang") { 75 Diags->Report(diag::err_fe_expected_clang_command); 76 return 0; 77 } 78 79 const driver::ArgStringList &CCArgs = Cmd->getArguments(); 80 OwningPtr<CompilerInvocation> CI(new CompilerInvocation()); 81 if (!CompilerInvocation::CreateFromArgs(*CI, 82 const_cast<const char **>(CCArgs.data()), 83 const_cast<const char **>(CCArgs.data()) + 84 CCArgs.size(), 85 *Diags)) 86 return 0; 87 return CI.take(); 88 } 89
