source: src/AST/LinkageSpec.hpp @ 91fb850

//
// Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
//
// The contents of this file are covered under the licence agreement in the
// file "LICENCE" distributed with Cforall.
//
// LinkageSpec.hpp --
//
// Author           : Aaron B. Moss
// Created On       : Thu May 9 10:00:00 2019
// Last Modified By : Aaron B. Moss
// Last Modified On : Thu May 9 10:00:00 2019
// Update Count     : 1
//

#pragma once

#include <string>

#include "Bitfield.hpp"
#include "Common/CodeLocation.h"

namespace ast {

namespace Linkage {

        /// Bitflags for linkage specifiers
        enum {
                Mangle       = 1 << 0,
                Generate     = 1 << 1,
                Overrideable = 1 << 2,
                Builtin      = 1 << 3,
                GccBuiltin   = 1 << 4
        };

        /// Bitflag type for storage classes
        struct spec_flags {
                union {
                        unsigned int val;
                        struct {
                                bool is_mangled      : 1;
                                bool is_generatable  : 1;
                                bool is_overrideable : 1;
                                bool is_builtin      : 1;
                                bool is_gcc_builtin  : 1;
                        };
                };

                constexpr spec_flags( unsigned int val ) : val(val) {}
        };

        using Spec = bitfield<spec_flags>;

        /// If `cmd` = "C" returns `spec` with `is_mangled = false`.
        /// If `cmd` = "Cforall" returns `spec` with `is_mangled = true`.
        Spec update( CodeLocation loc, Spec spec, const std::string * cmd );

        /// A human-readable name for this spec
        std::string name( Spec spec );

        // Pre-defined flag combinations

        /// C built-in defined in prelude
        constexpr Spec Intrinsic  = { Mangle | Generate | Overrideable | Builtin };
        /// Ordinary Cforall
        constexpr Spec Cforall    = { Mangle | Generate };
        /// C code: not overloadable, not mangled
        constexpr Spec C          = { Generate };
        /// Built by translator (e.g. struct assignment)
        constexpr Spec AutoGen    = { Mangle | Generate | Overrideable };
        /// GCC internal
        constexpr Spec Compiler   = { Mangle | Builtin | GccBuiltin };
        /// Mangled builtins
        constexpr Spec BuiltinCFA = { Mangle | Generate | Builtin };
        /// Non-mangled builtins
        constexpr Spec BuiltinC   = { Generate | Builtin };
}

}

// Local Variables: //
// tab-width: 4 //
// mode: c++ //
// compile-command: "make install" //
// End: //