c++tools/resolver.h

   1 /* C++ modules.  Experimental!  -*- c++ -*-
   2    Copyright (C) 2017-2021 Free Software Foundation, Inc.
   3    Written by Nathan Sidwell <nathan@acm.org> while at FaceBook
   4
   5    This file is part of GCC.
   6
   7    GCC is free software; you can redistribute it and/or modify it
   8    under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3, or (at your option)
  10    any later version.
  11
  12    GCC is distributed in the hope that it will be useful, but
  13    WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15    General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GCC; see the file COPYING3.  If not see
  19 <http://www.gnu.org/licenses/>.  */
  20
  21 #ifndef GXX_RESOLVER_H
  22 #define GXX_RESOLVER_H 1
  23
  24 // Mapper interface for client and server bits
  25 #include "cody.hh"
  26 // C++
  27 #if !IN_GCC
  28 #include <string>
  29 #include <map>
  30 #endif
  31
  32 // This is a GCC class, so GCC coding conventions on new bits.
  33 class module_resolver : public Cody::Resolver
  34 {
  35 public:
  36   using parent = Cody::Resolver;
  37   using module_map = std::map<std::string, std::string>;
  38
  39 private:
  40   std::string repo;
  41   std::string ident;
  42   module_map map;
  43   int fd_repo = -1;
  44   bool default_map = true;
  45   bool default_translate = true;
  46
  47 public:
  48   module_resolver (bool map = true, bool xlate = false);
  49   virtual ~module_resolver () override;
  50
  51 public:
  52   void set_default_map (bool d)
  53   {
  54     default_map = d;
  55   }
  56   void set_default_translate (bool d)
  57   {
  58     default_translate = d;
  59   }
  60   void set_ident (char const *i)
  61   {
  62     ident = i;
  63   }
  64   bool set_repo (std::string &&repo, bool force = false);
  65   bool add_mapping (std::string &&module, std::string &&file,
  66                     bool force = false);
  67
  68   // Return +ve line number of error, or -ve errno
  69   int read_tuple_file (int fd, char const *prefix, bool force = false);
  70   int read_tuple_file (int fd, std::string const &prefix,
  71                             bool force = false)
  72   {
  73     return read_tuple_file (fd, prefix.empty () ? nullptr : prefix.c_str (),
  74                             force);
  75   }
  76
  77 public:
  78   // Virtual overriders, names are controlled by Cody::Resolver
  79   using parent::ConnectRequest;
  80   virtual module_resolver *ConnectRequest (Cody::Server *, unsigned version,
  81                                            std::string &agent,
  82                                            std::string &ident)
  83     override;
  84   using parent::ModuleRepoRequest;
  85   virtual int ModuleRepoRequest (Cody::Server *) override;
  86   using parent::ModuleExportRequest;
  87   virtual int ModuleExportRequest (Cody::Server *s, Cody::Flags,
  88                                    std::string &module)
  89     override;
  90   using parent::ModuleImportRequest;
  91   virtual int ModuleImportRequest (Cody::Server *s, Cody::Flags,
  92                                    std::string &module)
  93     override;
  94   using parent::IncludeTranslateRequest;
  95   virtual int IncludeTranslateRequest (Cody::Server *s, Cody::Flags,
  96                                        std::string &include)
  97     override;
  98
  99   using parent::ModuleCompiledRequest;
 100   virtual int ModuleCompiledRequest (Cody::Server *s, Cody::Flags Flags,
 101                                      std::string &Module) override;
 102
 103 private:
 104   using parent::GetCMISuffix;
 105   virtual char const *GetCMISuffix () override;
 106
 107 private:
 108   int cmi_response (Cody::Server *s, std::string &module);
 109 };
 110
 111 #endif