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-rw-r--r--clang/lib/Frontend/CreateInvocationFromCommandLine.cpp91
1 files changed, 91 insertions, 0 deletions
diff --git a/clang/lib/Frontend/CreateInvocationFromCommandLine.cpp b/clang/lib/Frontend/CreateInvocationFromCommandLine.cpp
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+++ b/clang/lib/Frontend/CreateInvocationFromCommandLine.cpp
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+//===--- CreateInvocationFromCommandLine.cpp - CompilerInvocation from Args ==//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// Construct a compiler invocation object for command line driver arguments
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang/Frontend/Utils.h"
+#include "clang/Frontend/CompilerInstance.h"
+#include "clang/Frontend/DiagnosticOptions.h"
+#include "clang/Frontend/FrontendDiagnostic.h"
+#include "clang/Driver/Compilation.h"
+#include "clang/Driver/Driver.h"
+#include "clang/Driver/ArgList.h"
+#include "clang/Driver/Options.h"
+#include "clang/Driver/Tool.h"
+#include "llvm/Support/Host.h"
+using namespace clang;
+
+/// createInvocationFromCommandLine - Construct a compiler invocation object for
+/// a command line argument vector.
+///
+/// \return A CompilerInvocation, or 0 if none was built for the given
+/// argument vector.
+CompilerInvocation *
+clang::createInvocationFromCommandLine(ArrayRef<const char *> ArgList,
+ IntrusiveRefCntPtr<DiagnosticsEngine> Diags) {
+ if (!Diags.getPtr()) {
+ // No diagnostics engine was provided, so create our own diagnostics object
+ // with the default options.
+ DiagnosticOptions DiagOpts;
+ Diags = CompilerInstance::createDiagnostics(DiagOpts, ArgList.size(),
+ ArgList.begin());
+ }
+
+ SmallVector<const char *, 16> Args;
+ Args.push_back("<clang>"); // FIXME: Remove dummy argument.
+ Args.insert(Args.end(), ArgList.begin(), ArgList.end());
+
+ // FIXME: Find a cleaner way to force the driver into restricted modes. We
+ // also want to force it to use clang.
+ Args.push_back("-fsyntax-only");
+
+ // FIXME: We shouldn't have to pass in the path info.
+ driver::Driver TheDriver("clang", llvm::sys::getDefaultTargetTriple(),
+ "a.out", false, *Diags);
+
+ // Don't check that inputs exist, they may have been remapped.
+ TheDriver.setCheckInputsExist(false);
+
+ OwningPtr<driver::Compilation> C(TheDriver.BuildCompilation(Args));
+
+ // Just print the cc1 options if -### was present.
+ if (C->getArgs().hasArg(driver::options::OPT__HASH_HASH_HASH)) {
+ C->PrintJob(llvm::errs(), C->getJobs(), "\n", true);
+ return 0;
+ }
+
+ // We expect to get back exactly one command job, if we didn't something
+ // failed.
+ const driver::JobList &Jobs = C->getJobs();
+ if (Jobs.size() != 1 || !isa<driver::Command>(*Jobs.begin())) {
+ SmallString<256> Msg;
+ llvm::raw_svector_ostream OS(Msg);
+ C->PrintJob(OS, C->getJobs(), "; ", true);
+ Diags->Report(diag::err_fe_expected_compiler_job) << OS.str();
+ return 0;
+ }
+
+ const driver::Command *Cmd = cast<driver::Command>(*Jobs.begin());
+ if (StringRef(Cmd->getCreator().getName()) != "clang") {
+ Diags->Report(diag::err_fe_expected_clang_command);
+ return 0;
+ }
+
+ const driver::ArgStringList &CCArgs = Cmd->getArguments();
+ OwningPtr<CompilerInvocation> CI(new CompilerInvocation());
+ if (!CompilerInvocation::CreateFromArgs(*CI,
+ const_cast<const char **>(CCArgs.data()),
+ const_cast<const char **>(CCArgs.data()) +
+ CCArgs.size(),
+ *Diags))
+ return 0;
+ return CI.take();
+}