passes/techmap/libparse.h

   1 /*
   2  *  yosys -- Yosys Open SYnthesis Suite
   3  *
   4  *  Copyright (C) 2012  Clifford Wolf <clifford@clifford.at>
   5  *
   6  *  Permission to use, copy, modify, and/or distribute this software for any
   7  *  purpose with or without fee is hereby granted, provided that the above
   8  *  copyright notice and this permission notice appear in all copies.
   9  *
  10  *  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  11  *  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  12  *  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  13  *  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  14  *  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  15  *  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  16  *  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  17  *
  18  */
  19
  20 #ifndef LIBPARSE_H
  21 #define LIBPARSE_H
  22
  23 #include <stdio.h>
  24 #include <string>
  25 #include <vector>
  26 #include <set>
  27
  28 namespace Yosys
  29 {
  30         struct LibertyAst
  31         {
  32                 std::string id, value;
  33                 std::vector<std::string> args;
  34                 std::vector<LibertyAst*> children;
  35                 ~LibertyAst();
  36                 LibertyAst *find(std::string name);
  37                 void dump(FILE *f, std::string indent = "", std::string path = "", bool path_ok = false);
  38                 static std::set<std::string> blacklist;
  39                 static std::set<std::string> whitelist;
  40         };
  41
  42         struct LibertyParser
  43         {
  44                 std::istream &f;
  45                 int line;
  46                 LibertyAst *ast;
  47                 LibertyParser(std::istream &f) : f(f), line(1), ast(parse()) {}
  48                 ~LibertyParser() { if (ast) delete ast; }
  49
  50         /* lexer return values:
  51            'v': identifier, string, array range [...] -> str holds the token string
  52            'n': newline
  53            anything else is a single character.
  54         */
  55                 int lexer(std::string &str);
  56
  57         LibertyAst *parse();
  58                 void error();
  59         void error(const std::string &str);
  60         };
  61 }
  62
  63 #endif
  64