source: mainline/uspace/dist/src/sysel/lib/boxed.sy@ dce39b4

--
-- Copyright (c) 2010 Jiri Svoboda
-- All rights reserved.
--
-- Redistribution and use in source and binary forms, with or without
-- modification, are permitted provided that the following conditions
-- are met:
--
-- o Redistributions of source code must retain the above copyright
--   notice, this list of conditions and the following disclaimer.
-- o Redistributions in binary form must reproduce the above copyright
--   notice, this list of conditions and the following disclaimer in the
--   documentation and/or other materials provided with the distribution.
-- o The name of the author may not be used to endorse or promote products
--   derived from this software without specific prior written permission.
--
-- THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
-- IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
-- OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
-- IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
-- INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
-- NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-- DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-- THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-- (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
-- THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
--

--
-- Declarations for boxed variants of primitive types. The interpreter
-- binds to these types internally. They must be declared.
--

class Bool is
        var Value : bool;
end

class Char is
        var Value : char;

        fun get_as_string() : string, builtin;

        -- String representation.
        prop AsString : string is
                get is
                        return get_as_string();
                end
        end
end

class Int is
        var Value : int;

        fun get_as_string() : string, builtin;

        -- String representation.
        prop AsString : string is
                get is
                        return get_as_string();
                end
        end
end

class String is
        var Value : string;

        fun get_length() : int, builtin;

        -- Length of string.
        prop Length : int is
                get is
                        return get_length();
                end
        end

        -- Slice (sub-string).
        fun Slice(start : int; length : int) : string, builtin;
end