CreateInvocationFromCommandLine.cpp revision 239462
155714Skris//===--- CreateInvocationFromCommandLine.cpp - CompilerInvocation from Args ==// 255714Skris// 355714Skris// The LLVM Compiler Infrastructure 455714Skris// 555714Skris// This file is distributed under the University of Illinois Open Source 655714Skris// License. See LICENSE.TXT for details. 755714Skris// 8280297Sjkim//===----------------------------------------------------------------------===// 955714Skris// 1055714Skris// Construct a compiler invocation object for command line driver arguments 1155714Skris// 1255714Skris//===----------------------------------------------------------------------===// 1355714Skris 1455714Skris#include "clang/Frontend/Utils.h" 15280297Sjkim#include "clang/Frontend/CompilerInstance.h" 1655714Skris#include "clang/Frontend/DiagnosticOptions.h" 1755714Skris#include "clang/Frontend/FrontendDiagnostic.h" 1855714Skris#include "clang/Driver/Compilation.h" 1955714Skris#include "clang/Driver/Driver.h" 2055714Skris#include "clang/Driver/ArgList.h" 2155714Skris#include "clang/Driver/Options.h" 22280297Sjkim#include "clang/Driver/Tool.h" 2355714Skris#include "llvm/Support/Host.h" 2455714Skrisusing namespace clang; 2555714Skris 2655714Skris/// createInvocationFromCommandLine - Construct a compiler invocation object for 2755714Skris/// a command line argument vector. 2855714Skris/// 2955714Skris/// \return A CompilerInvocation, or 0 if none was built for the given 3055714Skris/// argument vector. 3155714SkrisCompilerInvocation * 3255714Skrisclang::createInvocationFromCommandLine(ArrayRef<const char *> ArgList, 3355714Skris IntrusiveRefCntPtr<DiagnosticsEngine> Diags) { 3455714Skris if (!Diags.getPtr()) { 3555714Skris // No diagnostics engine was provided, so create our own diagnostics object 3655714Skris // with the default options. 37280297Sjkim DiagnosticOptions DiagOpts; 3855714Skris Diags = CompilerInstance::createDiagnostics(DiagOpts, ArgList.size(), 3955714Skris ArgList.begin()); 40280297Sjkim } 4155714Skris 4255714Skris SmallVector<const char *, 16> Args; 4355714Skris Args.push_back("<clang>"); // FIXME: Remove dummy argument. 4455714Skris Args.insert(Args.end(), ArgList.begin(), ArgList.end()); 4555714Skris 4655714Skris // FIXME: Find a cleaner way to force the driver into restricted modes. 4755714Skris Args.push_back("-fsyntax-only"); 4855714Skris 4955714Skris // FIXME: We shouldn't have to pass in the path info. 5055714Skris driver::Driver TheDriver("clang", llvm::sys::getDefaultTargetTriple(), 5155714Skris "a.out", false, *Diags); 52280297Sjkim // Force driver to use clang. 5355714Skris // FIXME: This seems like a hack. Maybe the "Clang" tool subclass should be 5455714Skris // available for using it to get the arguments, thus avoiding the overkill 5555714Skris // of using the driver. 5655714Skris TheDriver.setForcedClangUse(); 5755714Skris 5855714Skris // Don't check that inputs exist, they may have been remapped. 5955714Skris TheDriver.setCheckInputsExist(false); 6055714Skris 6155714Skris OwningPtr<driver::Compilation> C(TheDriver.BuildCompilation(Args)); 6255714Skris 6355714Skris // Just print the cc1 options if -### was present. 6455714Skris if (C->getArgs().hasArg(driver::options::OPT__HASH_HASH_HASH)) { 6555714Skris C->PrintJob(llvm::errs(), C->getJobs(), "\n", true); 66280297Sjkim return 0; 67280297Sjkim } 68280297Sjkim 6955714Skris // We expect to get back exactly one command job, if we didn't something 70280297Sjkim // failed. 71280297Sjkim const driver::JobList &Jobs = C->getJobs(); 7255714Skris if (Jobs.size() != 1 || !isa<driver::Command>(*Jobs.begin())) { 73280297Sjkim SmallString<256> Msg; 74280297Sjkim llvm::raw_svector_ostream OS(Msg); 75280297Sjkim C->PrintJob(OS, C->getJobs(), "; ", true); 76280297Sjkim Diags->Report(diag::err_fe_expected_compiler_job) << OS.str(); 7755714Skris return 0; 78280297Sjkim } 79280297Sjkim 8055714Skris const driver::Command *Cmd = cast<driver::Command>(*Jobs.begin()); 81280297Sjkim if (StringRef(Cmd->getCreator().getName()) != "clang") { 82280297Sjkim Diags->Report(diag::err_fe_expected_clang_command); 83280297Sjkim return 0; 84280297Sjkim } 85280297Sjkim 86280297Sjkim const driver::ArgStringList &CCArgs = Cmd->getArguments(); 87280297Sjkim OwningPtr<CompilerInvocation> CI(new CompilerInvocation()); 88280297Sjkim if (!CompilerInvocation::CreateFromArgs(*CI, 89280297Sjkim const_cast<const char **>(CCArgs.data()), 90280297Sjkim const_cast<const char **>(CCArgs.data()) + 91280297Sjkim CCArgs.size(), 92280297Sjkim *Diags)) 93280297Sjkim return 0; 94280297Sjkim return CI.take(); 95280297Sjkim} 96280297Sjkim