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-- tolua: array class
-- Written by Waldemar Celes
-- TeCGraf/PUC-Rio
-- Jul 1999
-- $Id: array.lua,v 1.2 2001/11/26 23:00:23 darkgod 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 = {
_base = classDeclaration,
}
settag(classArray,tolua_tag)
-- 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
-- get variable value
function classArray:getvalue (class,static)
if class and static then
return class..'::'..self.name..'[toluaI_index]'
elseif class then
return 'self->'..self.name..'[toluaI_index]'
else
return self.name..'[toluaI_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("toluaI_get")
output("static int",self.cgetname,"(lua_State* tolua_S)")
output("{")
-- declare index
output(' int toluaI_index;')
-- declare self, if the case
local _,_,static = strfind(self.mod,'^%s*(static)')
if class and static==nil then
output(' ',class,'*','self;')
output(' lua_pushstring(tolua_S,".self");')
output(' lua_rawget(tolua_S,1);')
output(' self = ')
output('(',class,'*) ')
output('lua_touserdata(tolua_S,-1);')
elseif static then
_,_,self.mod = strfind(self.mod,'^%s*static%s%s*(.*)')
end
-- check index
output(' if (!tolua_istype(tolua_S,2,LUA_TNUMBER,0))')
output(' tolua_error(tolua_S,"invalid type in array indexing.");')
output(' toluaI_index = (int)tolua_getnumber(tolua_S,2,0)-1;')
output(' if (toluaI_index<0 || toluaI_index>='..self.dim..')')
output(' tolua_error(tolua_S,"array indexing out of range.");')
-- return value
local t,ct = isbasic(self.type)
if t then
output(' tolua_push'..t..'(tolua_S,(',ct,')'..self:getvalue(class,static)..');')
else
if self.ptr == '&' or self.ptr == '' then
output(' tolua_pushusertype(tolua_S,(void*)&'..self:getvalue(class,static)..',',self.tag,');')
else
output(' tolua_pushusertype(tolua_S,(void*)'..self:getvalue(class,static)..',',self.tag,');')
end
end
output(' return 1;')
output('}')
output('\n')
-- set function ------------------------------------------------
if not strfind(self.mod,'const') then
if class then
output("/* set function:",self.name," of class ",class," */")
else
output("/* set function:",self.name," */")
end
self.csetname = self:cfuncname("toluaI_set")
output("static int",self.csetname,"(lua_State* tolua_S)")
output("{")
-- declare index
output(' int toluaI_index;')
-- declare self, if the case
local _,_,static = strfind(self.mod,'^%s*(static)')
if class and static==nil then
output(' ',class,'*','self;')
output(' lua_pushstring(tolua_S,".self");')
output(' lua_rawget(tolua_S,1);')
output(' self = ')
output('(',class,'*) ')
output('lua_touserdata(tolua_S,-1);')
elseif static then
_,_,self.mod = strfind(self.mod,'^%s*static%s%s*(.*)')
end
-- check index
output(' if (!tolua_istype(tolua_S,2,LUA_TNUMBER,0))')
output(' tolua_error(tolua_S,"invalid type in array indexing.");')
output(' toluaI_index = (int)tolua_getnumber(tolua_S,2,0)-1;')
output(' if (toluaI_index<0 || toluaI_index>='..self.dim..')')
output(' tolua_error(tolua_S,"array indexing out of range.");')
-- assign value
local ptr = ''
if self.ptr~='' then ptr = '*' end
output(' ')
if class and static then
output(class..'::'..self.name..'[toluaI_index]')
elseif class then
output('self->'..self.name..'[toluaI_index]')
else
output(self.name..'[toluaI_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_get'..t,'(tolua_S,3,',def,'));')
else
output('tolua_getusertype(tolua_S,3,',def,'));')
end
output(' return 0;')
output('}')
output('\n')
end
end
function classArray:register ()
local parent = self:inclass() or self:inmodule()
if parent then
if self.csetname then
output(' tolua_tablearray(tolua_S,"'..parent..'","'..self.lname..'",'..self.cgetname..','..self.csetname..');')
else
output(' tolua_tablearray(tolua_S,"'..parent..'","'..self.lname..'",'..self.cgetname..',NULL);')
end
else
if self.csetname then
output(' tolua_globalarray(tolua_S,"'..self.lname..'",'..self.cgetname..','..self.csetname..');')
else
output(' tolua_globalarray(tolua_S,"'..self.lname..'",'..self.cgetname..',NULL);')
end
end
end
function classArray:unregister ()
if self:inclass()==nil and self:inmodule()==nil then
output(' lua_pushnil(tolua_S); lua_setglobal(tolua_S,"'..self.lname..'");')
end
end
-- Internal constructor
function _Array (t)
t._base = classArray
settag(t,tolua_tag)
append(t)
return t
end
-- Constructor
-- Expects a string representing the variable declaration.
function Array (s)
return _Array (Declaration(s,'var'))
end
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