Added command parser and common implementation

common/command.h

@@ -0,0 +1,68 @@
+/*
+ *  nextpnr -- Next Generation Place and Route
+ *
+ *  Copyright (C) 2018  Clifford Wolf <clifford@symbioticeda.com>
+ *  Copyright (C) 2018  Miodrag Milanovic <miodrag@symbioticeda.com>
+ *
+ *  Permission to use, copy, modify, and/or distribute this software for any
+ *  purpose with or without fee is hereby granted, provided that the above
+ *  copyright notice and this permission notice appear in all copies.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ *  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ *  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ *  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ *  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ *  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ *  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ */
+
+#ifndef COMMAND_H
+#define COMMAND_H
+
+#include <boost/program_options.hpp>
+#include "nextpnr.h"
+
+NEXTPNR_NAMESPACE_BEGIN
+
+namespace po = boost::program_options;
+
+class CommandHandler
+{
+  public:
+    CommandHandler(int argc, char **argv);
+    virtual ~CommandHandler(){};
+
+    int exec();
+
+  protected:
+    virtual void setupArchContext(Context *ctx) = 0;
+    virtual std::unique_ptr<Context> createContext() = 0;
+    virtual po::options_description getArchOptions() = 0;
+    virtual void validate(){};
+    virtual void customAfterLoad(Context *ctx){};
+    virtual void customBitstream(Context *ctx){};
+    void conflicting_options(const boost::program_options::variables_map &vm, const char *opt1, const char *opt2);
+
+  private:
+    bool parseOptions();
+    bool executeBeforeContext();
+    void setupContext(Context *ctx);
+    int executeMain(std::unique_ptr<Context> ctx);
+    po::options_description getGeneralOptions();
+
+  protected:
+    po::variables_map vm;
+    ArchArgs chipArgs;
+
+  private:
+    po::options_description options;
+    po::positional_options_description pos;
+    int argc;
+    char **argv;
+};
+
+NEXTPNR_NAMESPACE_END
+
+#endif // COMMAND_H