Driver: Add host info (add new files).

llvm-svn: 66604

clang/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 <string>
+
+namespace clang {
+namespace driver {
+  class ArgList;
+  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 {
+  std::string Arch, Platform, OS;
+
+protected:
+  HostInfo(const char *Arch, const char *Platform, const char *OS);
+
+public:
+  virtual ~HostInfo();
+
+  /// useDriverDriver - Whether the driver should act as a driver
+  /// driver for this host and support -arch, -Xarch, etc.
+  virtual bool useDriverDriver() 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 be non-zero for hosts which
+  /// support a driver driver.
+  virtual ToolChain *getToolChain(const ArgList &Args, 
+                                  const char *ArchName) const = 0;
+};
+
+/// DarwinHostInfo - Darwin host information implementation.
+class DarwinHostInfo : public HostInfo {
+  /// Darwin version of host.
+  unsigned DarwinVersion[3];
+
+  /// GCC version to use on this host.
+  unsigned GCCVersion[3];
+
+public:
+  DarwinHostInfo(const char *Arch, const char *Platform, const char *OS);
+
+  virtual bool useDriverDriver() const;
+
+  virtual ToolChain *getToolChain(const ArgList &Args, 
+                                  const char *ArchName) const;
+};
+
+/// UnknownHostInfo - Generic host information to use for unknown
+/// hosts.
+class UnknownHostInfo : public HostInfo {
+public:
+  UnknownHostInfo(const char *Arch, const char *Platform, const char *OS);
+
+  virtual bool useDriverDriver() const;
+
+  virtual ToolChain *getToolChain(const ArgList &Args, 
+                                  const char *ArchName) const;
+};
+
+} // end namespace driver
+} // end namespace clang
+
+#endif