-- tolua: typedef class
-- Written by Waldemar Celes
-- TeCGraf/PUC-Rio
-- Jul 1998
-- $Id: $

-- This code is free software; you can redistribute it and/or modify it.
-- The software provided hereunder is on an "as is" basis, and
-- the author has no obligation to provide maintenance, support, updates,
-- enhancements, or modifications.



-- Typedef class
-- Represents a type synonym.
-- The 'de facto' type replaces the typedef before the
-- remaining code is parsed.
-- The following fields are stored:
--   utype = typedef name
--   type = 'the facto' type
--   mod = modifiers to the 'de facto' type
classTypedef = {
    utype = '',
    mod = '',
    type = ''
}
classTypedef.__index = classTypedef

-- Print method
function classTypedef:print (ident,close)
    print(ident.."Typedef{")
    print(ident.." utype = '"..self.utype.."',")
    print(ident.." mod = '"..self.mod.."',")
    print(ident.." type = '"..self.type.."',")
    print(ident.."}"..close)
end

-- Return it's not a variable
function classTypedef:isvariable ()
    return false
end

-- Internal constructor
function _Typedef (t)
    setmetatable(t,classTypedef)
    t.type = resolve_template_types(t.type)
    appendtypedef(t)
    return t
end

-- Constructor
-- Expects one string representing the type definition.
function Typedef (s)
    if strfind(string.gsub(s, '%b<>', ''),'[%*&]') then
        tolua_error("#invalid typedef: pointers (and references) are not supported")
    end
    local o = {mod = ''}
    if string.find(s, "[<>]") then
        _,_,o.type,o.utype = string.find(s, "^%s*([^<>]+%b<>[^%s]*)%s+(.-)$")
    else
        local t = split(gsub(s,"%s%s*"," ")," ")
        o = {
            utype = t[t.n],
            type = t[t.n-1],
            mod = concat(t,1,t.n-2),
        }
    end
    return _Typedef(o)
end


