1 files changed, 84 insertions, 0 deletions
diff --git a/include/clang/Driver/HostInfo.h b/include/clang/Driver/HostInfo.h
new file mode 100644
index 0000000..020bb3a
--- /dev/null
+++ b/include/clang/Driver/HostInfo.h
@@ -0,0 +1,84 @@
+//===--- HostInfo.h - Host specific information -----------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef CLANG_DRIVER_HOSTINFO_H_
+#define CLANG_DRIVER_HOSTINFO_H_
+
+#include "clang/Driver/Types.h"
+#include "llvm/ADT/Triple.h"
+#include <string>
+
+namespace clang {
+namespace driver {
+  class ArgList;
+  class Driver;
+  class ToolChain;
+
+/// HostInfo - Config information about a particular host which may
+/// interact with driver behavior.
+/// 
+/// The host information is used for controlling the parts of the
+/// driver which interact with the platform the driver is ostensibly
+/// being run from. For testing purposes, the HostInfo used by the
+/// driver may differ from the actual host.
+class HostInfo {
+  const Driver &TheDriver;
+  const llvm::Triple Triple;
+
+protected:
+  HostInfo(const Driver &D, const llvm::Triple &_Triple);
+
+public:
+  virtual ~HostInfo();
+
+  const Driver &getDriver() const { return TheDriver; }
+  
+  const llvm::Triple& getTriple() const { return Triple; }
+  std::string getArchName() const { return Triple.getArchName(); }
+  std::string getPlatformName() const { return Triple.getVendorName(); }
+  std::string getOSName() const { return Triple.getOSName(); }
+
+  /// useDriverDriver - Whether the driver should act as a driver
+  /// driver for this host and support -arch, -Xarch, etc.
+  virtual bool useDriverDriver() const = 0;
+
+  /// lookupTypeForExtension - Return the default language type to use
+  /// for the given extension.
+  virtual types::ID lookupTypeForExtension(const char *Ext) const = 0;
+
+  /// getToolChain - Construct the toolchain to use for this host.
+  ///
+  /// \param Args - The argument list, which may be used to alter the
+  /// default toolchain, for example in the presence of -m32 or -m64.
+  ///
+  /// \param ArchName - The architecture to return a toolchain for, or
+  /// 0 if unspecified. This will only ever be non-zero for hosts
+  /// which support a driver driver.
+
+  // FIXME: Pin down exactly what the HostInfo is allowed to use Args
+  // for here. Currently this is for -m32 / -m64 defaulting.
+  virtual ToolChain *getToolChain(const ArgList &Args, 
+                                  const char *ArchName=0) const = 0;
+};
+
+const HostInfo *createDarwinHostInfo(const Driver &D, 
+                                     const llvm::Triple& Triple);
+const HostInfo *createFreeBSDHostInfo(const Driver &D, 
+                                      const llvm::Triple& Triple);
+const HostInfo *createDragonFlyHostInfo(const Driver &D, 
+                                        const llvm::Triple& Triple);
+const HostInfo *createLinuxHostInfo(const Driver &D, 
+                                    const llvm::Triple& Triple);
+const HostInfo *createUnknownHostInfo(const Driver &D, 
+                                      const llvm::Triple& Triple);
+
+} // end namespace driver
+} // end namespace clang
+
+#endif