// file      : build2/test/script/parser -*- C++ -*-
// copyright : Copyright (c) 2014-2016 Code Synthesis Ltd
// license   : MIT; see accompanying LICENSE file

#ifndef BUILD2_TEST_SCRIPT_PARSER
#define BUILD2_TEST_SCRIPT_PARSER

#include <build2/types>
#include <build2/utility>

#include <build2/parser>
#include <build2/diagnostics>

#include <build2/test/script/token>
#include <build2/test/script/script>

namespace build2
{
  namespace test
  {
    namespace script
    {
      class lexer;
      class runner;

      class parser: protected build2::parser
      {
      public:
        // Issue diagnostics and throw failed in case of an error.
        //
        void
        parse (istream&,
               const path& name,
               target& test,
               target& script,
               runner&);

        // Recursive descent parser.
        //
        // Each parse function receives the token/type from which it should
        // start consuming. On return the token/type should contain the first
        // token that has not been consumed. For *_line() functions this is
        // the newline.
        //
      protected:
        void
        parse_script (token&, token_type&);

        void
        parse_script_line (token&, token_type&);

        void
        parse_variable_line (token&, token_type&, string);

        void
        parse_test_line (token&, token_type&, names_type, location);

        command_exit
        parse_command_exit (token&, token_type&);

        string
        parse_here_document (token&, token_type&, const string&);

        // Customization hooks.
        //
      protected:
        virtual lookup
        lookup_variable (name&&, string&&, const location&) override;

      protected:
        using base_parser = build2::parser;

        lexer* lexer_;
        script* script_;
        runner* runner_;
      };
    }
  }
}

#endif // BUILD2_TEST_SCRIPT_PARSER