summaryrefslogtreecommitdiff
path: root/src/scripts/elua/modules/lualian.lua
blob: 72c07f65aa0e7467a5e6a56afefeec8283d67b1c (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
-- 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

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 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()]
        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() 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()

        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()
            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() 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() .. proto.suffix

        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()
                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()
                    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()
                        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()
                    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
        if v:scope_get() == obj_scope.PUBLIC and not v:is_c_only() 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 then
                cnt[#cnt + 1] = Property(v, func_type.PROP_SET)
            end
            if fread 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() == obj_scope.PUBLIC and not v:is_c_only() 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 v = inherits[i]
        local tp = eolian.class_get_by_name(v):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 eolian.directory_scan(dir) then
        error("Failed including directory: " .. dir)
    end
end

M.load_eot_files = function()
    return eolian.all_eot_files_parse()
end

M.system_directory_scan = function()
    return eolian.system_directory_scan()
end

M.generate = function(fname, fstream)
    if not eolian.file_parse(fname) then
        error("Failed parsing file: " .. fname)
    end
    if not eolian.database_validate() then
        error("Failed validating database.")
    end
    local sfn = fname:match(".*[\\/](.+)$") or fname
    local klass = eolian.class_get_by_file(sfn)
    File(fname, klass, { gen_class(klass) }):generate(fstream or io.stdout)
end

return M