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|
-- Elua lualian module
local cutil = require("cutil")
local util = require("util")
local log = require("eina.log")
local eolian = require("eolian")
local M = {}
local dom
local type_type = eolian.type_type
local class_type = eolian.class_type
local func_type = eolian.function_type
local obj_scope = eolian.object_scope
local param_dir = eolian.parameter_dir
local gen_unit
local gen_state
local get_state = function()
if not gen_state then
gen_state = eolian.new()
end
return assert(gen_state, "could not create eolian state")
end
cutil.init_module(function()
dom = log.Domain("lualian")
if not dom:is_valid() then
log.err("Could not register log domain: lualian")
error("Could not register log domain: lualian")
end
end, function()
dom:unregister()
dom = nil
end)
local lua_kw = {
["and"] = true, ["end"] = true, ["in"] = true, ["local"] = true,
["nil"] = true, ["not"] = true, ["or"] = true, ["repeat"] = true,
["then"] = true, ["until"] = true
}
local kw_t = function(n)
if lua_kw[n] then
return n .. "_"
end
return n
end
local int_builtin = {
["byte" ] = true, ["short"] = true, ["int"] = true, ["long"] = true,
["llong"] = true,
["int8" ] = true, ["int16"] = true, ["int32"] = true, ["int64"] = true,
["int128"] = true,
["intptr"] = true
}
local num_others = {
["size" ] = true, ["ssize" ] = true, ["ptrdiff"] = true,
["float"] = true, ["double"] = true
}
local is_num = function(x)
if not x then
return false
end
if num_others [x ] then return true end
if int_builtin[x ] then return true end
if int_builtin["u" .. x] then return true end
return false
end
local known_out = {
["Evas_Coord"] = function(expr) return ("tonumber(%s)"):format(expr) end,
["bool"] = function(expr) return ("((%s) ~= 0)"):format(expr) end,
["char"] = function(expr) return ("string.char(%s)"):format(expr) end
}
local known_in = {
["Evas_Coord"] = function(expr) return expr end,
["bool"] = function(expr) return expr end
}
local known_ptr_out = {
["const char"] = function(expr) return ("ffi.string(%s)"):format(expr) end
}
local known_ptr_in = {
["const char"] = function(expr) return expr end
}
local convfuncs = {}
local build_calln = function(tps, expr, isin)
return expr
end
local typeconv = function(tps, expr, isin)
if tps:type_get() == type_type.POINTER then
local base = tps:base_type_get()
local f = (isin and known_ptr_in or known_ptr_out)[base:c_type_get(gen_unit, eolian.c_type_type.DEFAULT)]
if f then return f(expr) end
return build_calln(tps, expr, isin)
end
local tp = tps:name_get()
if is_num(tp) then
return isin and expr or ("tonumber(%s)"):format(expr)
end
local f = (isin and known_in or known_out)[tp]
if f then
return f(expr)
end
return build_calln(tps, expr, isin)
end
local Node = util.Object:clone {
generate = function(self, s)
end,
gen_children = function(self, s)
local len = #self.children
local evs = self.events
local evslen
if evs then evslen = #evs end
local hasevs = evs and evslen > 0
local hasprops = false
local nprops = 0
local props = {}
for i, v in ipairs(self.children) do
v.parent_node = self
if v.generate_prop then
if v:generate_prop(props) then
nprops = nprops + 1
end
hasprops = true
end
v:generate(s, (not hasevs) and (not hasprops) and (i == len))
end
if hasevs then
s:write(" __events = {\n")
for i, v in ipairs(evs) do
v.parent_node = self
v:generate(s, i == evslen)
end
s:write(" }", hasprops and "," or "", "\n")
end
if hasprops then
if hasevs then
s:write("\n")
end
s:write(" __properties = {\n")
local pi = 0
for k, v in pairs(props) do
pi = pi + 1
s:write(" [\"", k, "\"] = { ", table.concat(v, ", "),
" }", pi ~= nprops and "," or "", "\n")
end
s:write(" }\n")
end
end
}
local Method = Node:clone {
__ctor = function(self, meth)
self.method = meth
end,
gen_proto = function(self)
if self.cached_proto then return self.cached_proto end
local meth = self.method
local pars = meth:parameters_get()
local rett = meth:return_type_get(func_type.METHOD)
local proto = {
name = meth:name_get()
}
proto.ret_type = rett and rett:c_type_get(gen_unit, eolian.c_type_type.RETURN) or "void"
local args, cargs, vargs = { "self" }, {}, {}
proto.args, proto.cargs, proto.vargs = args, cargs, vargs
local rets = {}
proto.rets = rets
local allocs = {}
proto.allocs = allocs
proto.full_name = meth:full_c_name_get(func_type.METHOD)
local fulln = proto.full_name
if rett then
rets[#rets + 1] = typeconv(rett, "v", false)
end
for v in pars do
local dir, tps, nm = v:direction_get(), v:type_get(), kw_t(v:name_get())
local tp = tps:c_type_get(gen_unit, eolian.c_type_type.PARAM)
if dir == param_dir.OUT or dir == param_dir.INOUT then
if dir == param_dir.INOUT then
args[#args + 1] = nm
end
cargs [#cargs + 1] = tp .. " *" .. nm
vargs [#vargs + 1] = nm
allocs[#allocs + 1] = { tp, nm, (dir == param_dir.INOUT)
and typeconv(tps, nm, true) or nil }
rets [#rets + 1] = typeconv(tps, nm .. "[0]", false)
else
args [#args + 1] = nm
cargs [#cargs + 1] = tp .. " " .. nm
vargs [#vargs + 1] = typeconv(tps, nm, true)
end
end
if #cargs == 0 then cargs[1] = "void" end
self.cached_proto = proto
return proto
end,
generate = function(self, s, last)
local proto = self:gen_proto()
s:write(" ", proto.name, proto.suffix or "", " = function(",
table.concat(proto.args, ", "), ")\n")
s:write( " eo.__do_start(self, __class)\n")
for i, v in ipairs(proto.allocs) do
s:write(" local ", v[2], " = ffi.new(\"", v[1], "[1]\")\n")
end
local genv = (proto.ret_type ~= "void")
s:write(" ", genv and "local v = " or "", "__lib.",
proto.full_name, "(", table.concat(proto.vargs, ", "), ")\n")
s:write(" eo.__do_end()\n")
if #proto.rets > 0 then
s:write(" return ", table.concat(proto.rets, ", "), "\n")
end
s:write(" end", last and "" or ",", last and "\n" or "\n\n")
end,
gen_ffi = function(self, s)
local proto = self:gen_proto()
local ret = proto.ret_type
if ret:match("[a-zA-Z0-9_]$") then
ret = ret .. " "
end
local cproto = {
" ", ret, proto.full_name, "(", table.concat(proto.cargs, ", "),
");\n"
}
s:write(table.concat(cproto))
end
}
local Property = Method:clone {
__ctor = function(self, prop, ftype)
self.property = prop
self.isget = (ftype == func_type.PROP_GET)
self.ftype = ftype
end,
gen_proto = function(self)
if self.cached_proto then return self.cached_proto end
local prop = self.property
local keys = prop:property_keys_get(self.ftype):to_array()
local vals = prop:property_values_get(self.ftype):to_array()
local rett = prop:return_type_get(self.ftype)
local proto = {
name = prop:name_get(),
suffix = (self.isget and "_get" or "_set"),
nkeys = #keys,
nvals = #vals
}
proto.ret_type = rett and rett:c_type_get(gen_unit, eolian.c_type_type.RETURN) or "void"
local args, cargs, vargs = { "self" }, {}, {}
proto.args, proto.cargs, proto.vargs = args, cargs, vargs
local rets = {}
proto.rets = rets
local allocs = {}
proto.allocs = allocs
proto.full_name = prop:full_c_name_get(self.ftype)
local fulln = proto.full_name
if #keys > 0 then
for i, v in ipairs(keys) do
local nm = kw_t(v:name_get())
local tps = v:type_get()
local tp = tps:c_type_get(gen_unit, eolian.c_type_type.PARAM)
args [#args + 1] = nm
cargs[#cargs + 1] = tp .. " " .. nm
vargs[#vargs + 1] = typeconv(tps, nm, true)
end
end
proto.kprop = #keys > 0
if #vals > 0 then
if self.isget then
if #vals == 1 and not rett then
local tps = vals[1]:type_get()
proto.ret_type = tps:c_type_get(gen_unit, eolian.c_type_type.PARAM)
rets[#rets + 1] = typeconv(tps, "v", false)
else
for i, v in ipairs(vals) do
local dir, tps, nm = v:direction_get(), v:type_get(),
kw_t(v:name_get())
local tp = tps:c_type_get(gen_unit, eolian.c_type_type.PARAM)
cargs [#cargs + 1] = tp .. " *" .. nm
vargs [#vargs + 1] = nm
allocs[#allocs + 1] = { tp, nm }
rets [#rets + 1] = typeconv(tps, nm .. "[0]", false)
end
end
else
for i, v in ipairs(vals) do
local dir, tps, nm = v:direction_get(), v:type_get(),
kw_t(v:name_get())
local tp = tps:c_type_get(gen_unit, eolian.c_type_type.PARAM)
args [#args + 1] = nm
cargs[#cargs + 1] = tp .. " " .. nm
vargs[#vargs + 1] = typeconv(tps, nm, true)
end
end
end
if #cargs == 0 then cargs[1] = "void" end
self.cached_proto = proto
return proto
end,
generate_prop = function(self, props)
local proto = self:gen_proto()
local prop = props[proto.name]
local hasprop = true
if not prop then
prop = { 0, 0, 0, 0, "false", "false" }
props[proto.name] = prop
hasprop = false
end
if self.isget then
prop[1] = proto.nkeys
prop[3] = math.max(proto.nvals, 1)
prop[5] = "true"
else
prop[2] = proto.nkeys
prop[4] = math.max(proto.nvals, 1)
prop[6] = "true"
end
return not hasprop
end
}
local Event = Node:clone {
__ctor = function(self, ename, etype, ecname)
self.ename = ename
self.etype = etype
self.ecname = ecname
end,
generate = function(self, s, last)
s:write(" [\"", self.ename, "\"] = __lib.",
"_" .. self.ecname, last and "\n" or ",\n")
end,
gen_ffi = function(self, s)
s:write(" extern const Eo_Event_Description ",
"_" .. self.ecname, ";\n")
end
}
local gen_ns = function(klass, s)
local nspaces = klass:namespaces_get():to_array()
if #nspaces > 1 then
local lnspaces = {}
for i = 2, #nspaces do
lnspaces[i - 1] = '"' .. nspaces[i]:lower() .. '"'
end
s:write("local __M = util.get_namespace(M, { ",
table.concat(lnspaces, ", "), " })\n")
return "__M"
else
return "M"
end
end
local Mixin = Node:clone {
__ctor = function(self, iface, klass, ch, evs)
self.klass = klass
self.children = ch
self.events = evs
self.iface = iface
end,
generate = function(self, s)
dom:log(log.level.INFO, " Generating for interface/mixin: "
.. self.klass:full_name_get())
s:write("ffi.cdef [[\n")
self:gen_ffi(s)
s:write("]]\n\n")
gen_ns(self.klass, s)
s:write("__body = {\n")
self:gen_children(s)
s:write("}\n")
local knu = self.klass:full_name_get():gsub("%.", "_")
if not self.iface then
s:write(("__body[\"__mixin_%s\"] = true\n"):format(knu))
else
s:write(("__body[\"__iface_%s\"] = true\n"):format(knu))
end
end,
gen_ffi = function(self, s)
s:write(" const Eo_Class *", self.klass:c_get_function_name_get(),
"(void);\n")
for i, v in ipairs(self.children) do
v.parent_node = self
v:gen_ffi(s)
end
if self.events then
for i, v in ipairs(self.events) do
v.parent_node = self
v:gen_ffi(s)
end
end
end
}
local build_pn = function(fn, pn)
if fn == pn then
return kw_t(pn)
end
return fn .. "_" .. pn
end
local Class = Node:clone {
__ctor = function(self, klass, parents, mixins, ch, evs)
self.klass = klass
self.parents = parents
self.interfaces = interfaces
self.mixins = mixins
self.children = ch
self.events = evs
end,
generate = function(self, s)
dom:log(log.level.INFO, " Generating for class: "
.. self.klass:full_name_get())
s:write("ffi.cdef [[\n")
self:gen_ffi(s)
s:write("]]\n\n")
local mname = gen_ns(self.klass, s)
s:write("__body = {\n")
self:gen_ctor(s)
self:gen_children(s)
s:write("}\n")
-- write the constructor
s:write(([[
%s.%s = function(parent, ...)
return eo.__ctor_common(__class, parent, eo.class_get("%s").__eo_ctor,
1, ...)
end
]]):format(mname, self.klass:name_get(), self.klass:full_name_get():gsub("%.",
"_")))
end,
gen_ffi = Mixin.gen_ffi,
gen_ctor = function(self, s)
local ctors = self.klass:constructors_get()
if not ctors then return end
-- collect constructor information
s:write(" __eo_ctor = function(self, ")
local cfuncs, parnames, upars = {}, {}, {}
for ctor in ctors do
local cfunc = ctor:function_get()
local cn = cfunc:name_get()
local tp = cfunc:type_get()
if tp == func_type.PROPERTY or tp == func_type.PROP_SET
or tp == func_type.METHOD then
cfuncs[#cfuncs + 1] = cfunc
if tp ~= func_type.METHOD then
for par in cfunc:property_keys_get(func_type.PROP_SET) do
parnames[#parnames + 1] = build_pn(cn, par:name_get())
end
end
local iter = (tp ~= func_type.METHOD)
and cfunc:property_values_get(func_type.PROP_SET)
or cfunc:parameters_get()
for par in iter do
if par:direction_get() ~= param_dir.OUT then
parnames[#parnames + 1] = build_pn(cn, par:name_get())
end
end
end
end
s:write(table.concat(parnames, ", "))
if #parnames == 0 then
s:write("__func")
else
s:write(", __func")
end
s:write(")\n")
-- write ctor body
local j = 1
for i, cfunc in ipairs(cfuncs) do
local tp = cfunc:type_get()
s:write(" self:", cfunc:name_get())
if cfunc:type_get() ~= func_type.METHOD then
s:write("_set")
end
s:write("(")
local fpars = {}
if tp ~= func_type.METHOD then
for par in cfunc:property_keys_get(func_type.PROP_SET) do
fpars[#fpars + 1] = parnames[j]
j = j + 1
end
end
local iter = (tp ~= func_type.METHOD)
and cfunc:property_values_get(func_type.PROP_SET)
or cfunc:parameters_get()
for par in iter do
if par:direction_get() ~= param_dir.OUT then
fpars[#fpars + 1] = parnames[j]
j = j + 1
end
end
s:write(table.concat(fpars, ", "))
s:write(")\n")
end
s:write(" if __func then __func() end\n")
s:write(" end")
if #self.children > 0 then
s:write(",\n\n")
else
s:write("\n")
end
end
}
local File = Node:clone {
__ctor = function(self, fname, klass, ch)
self.fname = fname:match(".+/(.+)") or fname
self.klass = klass
self.children = ch
end,
generate = function(self, s)
local kls = self.klass
local ckls = self.children[1]
local kn = kls:full_name_get()
dom:log(log.level.INFO, "Generating for file: " .. self.fname)
dom:log(log.level.INFO, " Class : " .. kn)
local knu = kn:gsub("%.", "_")
local pars = ckls.parents or {}
local mins = ckls.mixins or {}
-- serialize both
local pv = {}
local mv = {}
for i = 1, #pars do pv[i] = '"' .. pars[i]:gsub("%.", "_") .. '"' end
for i = 1, #mins do mv[i] = '"' .. mins[i]:gsub("%.", "_") .. '"' end
pars = (#pars > 0) and ("{" .. table.concat(pv, ", ") .. "}") or "nil"
mins = (#mins > 0) and ("{" .. table.concat(mv, ", ") .. "}") or "nil"
s:write(([[
-- EFL LuaJIT bindings: %s (class %s)
-- For use with Elua; automatically generated, do not modify
local cutil = require("cutil")
local util = require("util")
local ffi = require("ffi")
local eo = require("eo")
local M, __lib = ...
local __class
local __body
local init = function()
__class = __lib.%s()
eo.class_register("%s", %s, %s, __body, __class)
end
cutil.init_module(init, function() end)
]]):format(self.fname, kn, kls:c_get_function_name_get(), knu, pars, mins))
self:gen_children(s)
s:write([[
return M
]])
local first = true
for name, v in pairs(convfuncs) do
if first then
print("\nRequired conversion functions:")
first = false
end
print(" " .. name)
end
end
}
local gen_contents = function(klass)
local cnt = {}
-- first try properties
local props = klass:functions_get(func_type.PROPERTY):to_array()
for i, v in ipairs(props) do
local gscope = v:scope_get(func_type.PROP_GET)
local sscope = v:scope_get(func_type.PROP_SET)
if (gscope == obj_scope.PUBLIC or sscope == obj_scope.PUBLIC) then
local ftype = v:type_get()
local fread = (ftype == func_type.PROPERTY or ftype == func_type.PROP_GET)
local fwrite = (ftype == func_type.PROPERTY or ftype == func_type.PROP_SET)
if fwrite and sscope == obj_scope.PUBLIC then
cnt[#cnt + 1] = Property(v, func_type.PROP_SET)
end
if fread and gscope == obj_scope.PUBLIC then
cnt[#cnt + 1] = Property(v, func_type.PROP_GET)
end
end
end
-- then methods
local meths = klass:functions_get(func_type.METHOD):to_array()
for i, v in ipairs(meths) do
if v:scope_get(func_type.METHOD) == obj_scope.PUBLIC then
cnt[#cnt + 1] = Method(v)
end
end
-- events
local evs = {}
local events = klass:events_get():to_array()
for i, v in ipairs(events) do
evs[#evs + 1] = Event(v:name_get(), v:type_get(), v:c_name_get())
end
return cnt, evs
end
local gen_class = function(klass)
local tp = klass:type_get()
if tp == class_type.UNKNOWN then
error(klass:full_name_get() .. ": unknown type")
elseif tp == class_type.MIXIN or tp == class_type.INTERFACE then
return Mixin(tp == class_type.INTERFACE, klass, gen_contents(klass))
end
local inherits = klass:inherits_get():to_array()
-- figure out the correct lookup order
local parents = {}
local mixins = {} -- also includes ifaces, they're separated later
for i = 1, #inherits do
local tp = inherits[i]:type_get()
if tp == class_type.REGULAR or tp == class_type.ABSTRACT then
parents[#parents + 1] = v
elseif tp == class_type.INTERFACE or tp == class_type.MIXIN then
mixins[#mixins + 1] = v
else
error(klass:full_name_get() .. ": unknown inherit " .. v)
end
end
return Class(klass, parents, mixins, gen_contents(klass))
end
M.include_dir = function(dir)
if not get_state():directory_scan(dir) then
error("Failed including directory: " .. dir)
end
end
M.load_eot_files = function()
return get_state():all_eot_files_parse()
end
M.system_directory_scan = function()
return get_state():system_directory_scan()
end
M.generate = function(fname, fstream)
local unit = get_state():file_parse(fname)
if unit == nil then
error("Failed parsing file: " .. fname)
end
gen_unit = unit
local sfn = fname:match(".*[\\/](.+)$") or fname
local klass = eolian.class_get_by_file(unit, sfn)
File(fname, klass, { gen_class(klass) }):generate(fstream or io.stdout)
end
return M
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