-- tolua: array class
-- Written by Waldemar Celes
-- TeCGraf/PUC-Rio
-- Jul 1999
-- $Id: array.lua,v 1.1 2000/11/06 22:03:57 celes Exp $
-- 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.
-- Array class
-- Represents a extern array variable or a public member of a class.
-- Stores all fields present in a declaration.
classArray = {
}
classArray.__index = classArray
setmetatable(classArray,classDeclaration)
-- Print method
function classArray:print (ident,close)
print(ident.."Array{")
print(ident.." mod = '"..self.mod.."',")
print(ident.." type = '"..self.type.."',")
print(ident.." ptr = '"..self.ptr.."',")
print(ident.." name = '"..self.name.."',")
print(ident.." def = '"..self.def.."',")
print(ident.." dim = '"..self.dim.."',")
print(ident.." ret = '"..self.ret.."',")
print(ident.."}"..close)
end
-- check if it is a variable
function classArray:isvariable ()
return true
end
-- get variable value
function classArray:getvalue (class,static)
if class and static then
return class..'::'..self.name..'[tolua_index]'
elseif class then
return 'self->'..self.name..'[tolua_index]'
else
return self.name..'[tolua_index]'
end
end
-- Write binding functions
function classArray:supcode ()
local class = self:inclass()
-- get function ------------------------------------------------
if class then
output("/* get function:",self.name," of class ",class," */")
else
output("/* get function:",self.name," */")
end
self.cgetname = self:cfuncname("tolua_get")
output("#ifndef TOLUA_DISABLE_"..self.cgetname)
output("\nstatic int",self.cgetname,"(lua_State* tolua_S)")
output("{")
output(" int tolua_index;")
-- declare self, if the case
local _,_,static = strfind(self.mod,'^%s*(static)')
if class and static==nil then
output(' ',self.parent.type,'*','self;')
output(' lua_pushstring(tolua_S,".self");')
output(' lua_rawget(tolua_S,1);')
output(' self = ')
output('(',self.parent.type,'*) ')
output('lua_touserdata(tolua_S,-1);')
elseif static then
_,_,self.mod = strfind(self.mod,'^%s*static%s%s*(.*)')
end
-- check index
output('#ifndef TOLUA_RELEASE\n')
output(' {')
output(' tolua_Error tolua_err;')
output(' if (!tolua_isnumber(tolua_S,2,0,&tolua_err))')
output(' tolua_error(tolua_S,"#vinvalid type in array indexing.",&tolua_err);')
output(' }')
output('#endif\n')
if flags['1'] then -- for compatibility with tolua5 ?
output(' tolua_index = (int)tolua_tonumber(tolua_S,2,0)-1;')
else
output(' tolua_index = (int)tolua_tonumber(tolua_S,2,0);')
end
output('#ifndef TOLUA_RELEASE\n')
if self.dim and self.dim ~= '' then
output(' if (tolua_index<0 || tolua_index>='..self.dim..')')
else
output(' if (tolua_index<0)')
end
output(' tolua_error(tolua_S,"array indexing out of range.",NULL);')
output('#endif\n')
-- return value
local t,ct = isbasic(self.type)
local push_func = get_push_function(t)
if t then
output(' tolua_push'..t..'(tolua_S,(',ct,')'..self:getvalue(class,static)..');')
else
t = self.type
if self.ptr == '&' or self.ptr == '' then
output(' ',push_func,'(tolua_S,(void*)&'..self:getvalue(class,static)..',"',t,'");')
else
output(' ',push_func,'(tolua_S,(void*)'..self:getvalue(class,static)..',"',t,'");')
end
end
output(' return 1;')
output('}')
output('#endif //#ifndef TOLUA_DISABLE\n')
output('\n')
-- set function ------------------------------------------------
if not strfind(self.type,'const') then
if class then
output("/* set function:",self.name," of class ",class," */")
else
output("/* set function:",self.name," */")
end
self.csetname = self:cfuncname("tolua_set")
output("#ifndef TOLUA_DISABLE_"..self.csetname)
output("\nstatic int",self.csetname,"(lua_State* tolua_S)")
output("{")
-- declare index
output(' int tolua_index;')
-- declare self, if the case
local _,_,static = strfind(self.mod,'^%s*(static)')
if class and static==nil then
output(' ',self.parent.type,'*','self;')
output(' lua_pushstring(tolua_S,".self");')
output(' lua_rawget(tolua_S,1);')
output(' self = ')
output('(',self.parent.type,'*) ')
output('lua_touserdata(tolua_S,-1);')
elseif static then
_,_,self.mod = strfind(self.mod,'^%s*static%s%s*(.*)')
end
-- check index
output('#ifndef TOLUA_RELEASE\n')
output(' {')
output(' tolua_Error tolua_err;')
output(' if (!tolua_isnumber(tolua_S,2,0,&tolua_err))')
output(' tolua_error(tolua_S,"#vinvalid type in array indexing.",&tolua_err);')
output(' }')
output('#endif\n')
if flags['1'] then -- for compatibility with tolua5 ?
output(' tolua_index = (int)tolua_tonumber(tolua_S,2,0)-1;')
else
output(' tolua_index = (int)tolua_tonumber(tolua_S,2,0);')
end
output('#ifndef TOLUA_RELEASE\n')
if self.dim and self.dim ~= '' then
output(' if (tolua_index<0 || tolua_index>='..self.dim..')')
else
output(' if (tolua_index<0)')
end
output(' tolua_error(tolua_S,"array indexing out of range.",NULL);')
output('#endif\n')
-- assign value
local ptr = ''
if self.ptr~='' then ptr = '*' end
output(' ')
if class and static then
output(class..'::'..self.name..'[tolua_index]')
elseif class then
output('self->'..self.name..'[tolua_index]')
else
output(self.name..'[tolua_index]')
end
local t = isbasic(self.type)
output(' = ')
if not t and ptr=='' then output('*') end
output('((',self.mod,self.type)
if not t then
output('*')
end
output(') ')
local def = 0
if self.def ~= '' then def = self.def end
if t then
output('tolua_to'..t,'(tolua_S,3,',def,'));')
else
local to_func = get_to_function(self.type)
output(to_func,'(tolua_S,3,',def,'));')
end
output(' return 0;')
output('}')
output('#endif //#ifndef TOLUA_DISABLE\n')
output('\n')
end
end
function classArray:register (pre)
if not self:check_public_access() then
return
end
pre = pre or ''
if self.csetname then
output(pre..'tolua_array(tolua_S,"'..self.lname..'",'..self.cgetname..','..self.csetname..');')
else
output(pre..'tolua_array(tolua_S,"'..self.lname..'",'..self.cgetname..',NULL);')
end
end
-- Internal constructor
function _Array (t)
setmetatable(t,classArray)
append(t)
return t
end
-- Constructor
-- Expects a string representing the variable declaration.
function Array (s)
return _Array (Declaration(s,'var'))
end
