Class: Module

Inherits:
Object show all
Defined in:
opal/opal/corelib/module.rb,
opal/opal/corelib/unsupported.rb,
opal/opal/corelib/marshal/write_buffer.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(&block) ⇒ Module

Returns a new instance of Module



12
13
14
 
# File 'opal/opal/corelib/module.rb', line 12

def initialize(&block)
  `Opal.module_initialize(self, block)`
end

Class Method Details

.allocate ⇒ Object 



2
3
4
5
6
7
8
9
10
 
# File 'opal/opal/corelib/module.rb', line 2

def self.allocate
  %x{
    var module;

    module = Opal.module_allocate();
    Opal.create_scope(Opal.Module.$$scope, module, null);
    return module;
  }
end

Instance Method Details

#<(other) ⇒ Object 



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
 
# File 'opal/opal/corelib/module.rb', line 22

def <(other)
  unless Module === other
    raise TypeError, "compared with non class/module"
  end

  # class cannot be a descendant of itself
  %x{
    var working = self,
        ancestors,
        i, length;

    if (working === other) {
      return false;
    }

    for (i = 0, ancestors = Opal.ancestors(self), length = ancestors.length; i < length; i++) {
      if (ancestors[i] === other) {
        return true;
      }
    }

    for (i = 0, ancestors = Opal.ancestors(other), length = ancestors.length; i < length; i++) {
      if (ancestors[i] === self) {
        return false;
      }
    }

    return nil;
  }
end

#<=(other) ⇒ Object 



53
54
55
 
# File 'opal/opal/corelib/module.rb', line 53

def <=(other)
  equal?(other) || self < other
end

#<=>(other) ⇒ Object 



69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
 
# File 'opal/opal/corelib/module.rb', line 69

def <=>(other)
  %x{
    if (self === other) {
      return 0;
    }
  }

  unless Module === other
    return nil
  end

  lt = self < other
  return nil if lt.nil?
  lt ? -1 : 1
end

#===(object) ⇒ Object 



16
17
18
19
20
 
# File 'opal/opal/corelib/module.rb', line 16

def ===(object)
  return false if `object == null`

  `Opal.is_a(object, self)`
end

#>(other) ⇒ Object 



57
58
59
60
61
62
63
 
# File 'opal/opal/corelib/module.rb', line 57

def >(other)
  unless Module === other
    raise TypeError, "compared with non class/module"
  end

  other < self
end

#>=(other) ⇒ Object 



65
66
67
 
# File 'opal/opal/corelib/module.rb', line 65

def >=(other)
  equal?(other) || self > other
end

#__marshal__(buffer) ⇒ Object 



108
109
110
111
112
113
114
115
116
 
# File 'opal/opal/corelib/marshal/write_buffer.rb', line 108

def __marshal__(buffer)
  unless name
    raise TypeError, "can't dump anonymous module"
  end

  buffer.save_link(self)
  buffer.append("m")
  buffer.write_module(self)
end

#alias_method(newname, oldname) ⇒ Object 



85
86
87
88
89
 
# File 'opal/opal/corelib/module.rb', line 85

def alias_method(newname, oldname)
  `Opal.alias(self, newname, oldname)`

  self
end

#alias_native(mid, jsid = mid) ⇒ Object 



91
92
93
94
95
 
# File 'opal/opal/corelib/module.rb', line 91

def alias_native(mid, jsid = mid)
  `Opal.alias_native(self, mid, jsid)`

  self
end

#ancestors ⇒ Object 



97
98
99
 
# File 'opal/opal/corelib/module.rb', line 97

def ancestors
  `Opal.ancestors(self)`
end

#append_features(klass) ⇒ Object 



101
102
103
104
 
# File 'opal/opal/corelib/module.rb', line 101

def append_features(klass)
  `Opal.append_features(self, klass)`
  self
end

#attr_accessor(*names) ⇒ Object Also known as: attr 



106
107
108
109
 
# File 'opal/opal/corelib/module.rb', line 106

def attr_accessor(*names)
  attr_reader(*names)
  attr_writer(*names)
end

#attr_reader(*names) ⇒ Object 



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
 
# File 'opal/opal/corelib/module.rb', line 113

def attr_reader(*names)
  %x{
    var proto = self.$$proto;

    for (var i = names.length - 1; i >= 0; i--) {
      var name = names[i],
          id   = '$' + name,
          ivar = Opal.ivar(name);

      // the closure here is needed because name will change at the next
      // cycle, I wish we could use let.
      var body = (function(ivar) {
        return function() {
          if (this[ivar] == null) {
            return nil;
          }
          else {
            return this[ivar];
          }
        };
      })(ivar);

      // initialize the instance variable as nil
      proto[ivar] = nil;

      body.$$parameters = [];
      body.$$arity = 0;

      if (self.$$is_singleton) {
        proto.constructor.prototype[id] = body;
      }
      else {
        Opal.defn(self, id, body);
      }
    }
  }

  nil
end

#attr_writer(*names) ⇒ Object 



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
 
# File 'opal/opal/corelib/module.rb', line 153

def attr_writer(*names)
  %x{
    var proto = self.$$proto;

    for (var i = names.length - 1; i >= 0; i--) {
      var name = names[i],
          id   = '$' + name + '=',
          ivar = Opal.ivar(name);

      // the closure here is needed because name will change at the next
      // cycle, I wish we could use let.
      var body = (function(ivar){
        return function(value) {
          return this[ivar] = value;
        }
      })(ivar);

      body.$$parameters = [['req']];
      body.$$arity = 1;

      // initialize the instance variable as nil
      proto[ivar] = nil;

      if (self.$$is_singleton) {
        proto.constructor.prototype[id] = body;
      }
      else {
        Opal.defn(self, id, body);
      }
    }
  }

  nil
end

#autoload(const, path) ⇒ Object 



188
189
190
191
192
193
194
195
196
197
198
199
 
# File 'opal/opal/corelib/module.rb', line 188

def autoload(const, path)
  %x{
    var autoloaders;

    if (!(autoloaders = self.$$autoload)) {
      autoloaders = self.$$autoload = {};
    }

    autoloaders[#{const}] = #{path};
    return nil;
  }
end

#class_variable_get(name) ⇒ Object

Raises:



201
202
203
204
205
206
207
208
209
 
# File 'opal/opal/corelib/module.rb', line 201

def class_variable_get(name)
  name = Opal.coerce_to!(name, String, :to_str)
  raise NameError.new('class vars should start with @@', name) if `name.length < 3 || name.slice(0,2) !== '@@'`
  %x{
    var value = Opal.cvars[name.slice(2)];
    #{raise NameError.new('uninitialized class variable @@a in', name) if `value == null`}
    return value;
  }
end

#class_variable_set(name, value) ⇒ Object

Raises:



211
212
213
214
215
216
217
218
 
# File 'opal/opal/corelib/module.rb', line 211

def class_variable_set(name, value)
  name = Opal.coerce_to!(name, String, :to_str)
  raise NameError if `name.length < 3 || name.slice(0,2) !== '@@'`
  %x{
    Opal.cvars[name.slice(2)] = value;
    return value;
  }
end

#const_defined?(name, inherit = true) ⇒ Boolean

check for constant within current scope if inherit is true or self is Object, will also check ancestors

Returns:

Raises:



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
 
# File 'opal/opal/corelib/module.rb', line 226

def const_defined?(name, inherit = true)
  name = Opal.const_name!(name)

  raise NameError.new("wrong constant name #{name}", name) unless name =~ Opal::CONST_NAME_REGEXP

  %x{
    var scopes = [self.$$scope];

    if (inherit || self === Opal.Object) {
      var parent = self.$$super;

      while (parent !== Opal.BasicObject) {
        scopes.push(parent.$$scope);

        parent = parent.$$super;
      }
    }

    for (var i = 0, length = scopes.length; i < length; i++) {
      if (scopes[i].hasOwnProperty(name)) {
        return true;
      }
    }

    return false;
  }
end

#const_get(name, inherit = true) ⇒ Object

Raises:



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
 
# File 'opal/opal/corelib/module.rb', line 254

def const_get(name, inherit = true)
  name = Opal.const_name!(name)

  %x{
    if (name.indexOf('::') === 0 && name !== '::'){
      name = name.slice(2);
    }
  }

  if `name.indexOf('::') != -1 && name != '::'`
    return name.split('::').inject(self) { |o, c| o.const_get(c) }
  end

  raise NameError.new("wrong constant name #{name}", name) unless name =~ Opal::CONST_NAME_REGEXP

  %x{
    var scopes = [self.$$scope];

    if (inherit || self == Opal.Object) {
      var parent = self.$$super;

      while (parent !== Opal.BasicObject) {
        scopes.push(parent.$$scope);

        parent = parent.$$super;
      }
    }

    for (var i = 0, length = scopes.length; i < length; i++) {
      if (scopes[i].hasOwnProperty(name)) {
        return scopes[i][name];
      }
    }

    return #{const_missing name};
  }
end

#const_missing(name) ⇒ Object

Raises:



292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
 
# File 'opal/opal/corelib/module.rb', line 292

def const_missing(name)
  %x{
    if (self.$$autoload) {
      var file = self.$$autoload[name];

      if (file) {
        self.$require(file);

        return #{const_get name};
      }
    }
  }

  full_const_name = self == Object ? name : "#{self}::#{name}"

  raise NameError.new("uninitialized constant #{full_const_name}", name)
end

#const_set(name, value) ⇒ Object 



310
311
312
313
314
315
316
317
318
319
320
 
# File 'opal/opal/corelib/module.rb', line 310

def const_set(name, value)
  name = Opal.const_name!(name)

  if !(name =~ Opal::CONST_NAME_REGEXP) || name.start_with?('::')
    raise NameError.new("wrong constant name #{name}", name)
  end

  `Opal.casgn(self, name, value)`

  value
end

#constants ⇒ Object 



220
221
222
 
# File 'opal/opal/corelib/module.rb', line 220

def constants
  `self.$$scope.constants.slice(0)`
end

#define_method(name, method = undefined, &block) ⇒ Object 



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
 
# File 'opal/opal/corelib/module.rb', line 322

def define_method(name, method = undefined, &block)
  if `method === undefined && block === nil`
    raise ArgumentError, "tried to create a Proc object without a block"
  end

  block ||= case method
    when Proc
      method

    when Method
      `#{method.to_proc}.$$unbound`

    when UnboundMethod
      lambda {|*args|
        bound = method.bind(self)
        bound.call(*args)
      }

    else
      raise TypeError, "wrong argument type #{block.class} (expected Proc/Method)"
  end

  %x{
    var id = '$' + name;

    block.$$jsid        = name;
    block.$$s           = null;
    block.$$def         = block;
    block.$$define_meth = true;

    Opal.defn(self, id, block);

    return name;
  }
end

#extended(mod) ⇒ Object 



490
491
 
# File 'opal/opal/corelib/module.rb', line 490

def extended(mod)
end

#include(*mods) ⇒ Object 



372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
 
# File 'opal/opal/corelib/module.rb', line 372

def include(*mods)
  %x{
    for (var i = mods.length - 1; i >= 0; i--) {
      var mod = mods[i];

      if (mod === self) {
        continue;
      }

      if (!mod.$$is_module) {
        #{raise TypeError, "wrong argument type #{`mod`.class} (expected Module)"};
      }

      #{`mod`.append_features self};
      #{`mod`.included self};
    }
  }

  self
end

#include?(mod) ⇒ Boolean

Returns:



422
423
424
425
426
427
428
429
430
431
432
433
434
 
# File 'opal/opal/corelib/module.rb', line 422

def include?(mod)
  %x{
    for (var cls = self; cls; cls = cls.$$super) {
      for (var i = 0; i != cls.$$inc.length; i++) {
        var mod2 = cls.$$inc[i];
        if (mod === mod2) {
          return true;
        }
      }
    }
    return false;
  }
end

#included(mod) ⇒ Object 



487
488
 
# File 'opal/opal/corelib/module.rb', line 487

def included(mod)
end

#included_modules ⇒ Object 



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
 
# File 'opal/opal/corelib/module.rb', line 393

def included_modules
  %x{
    var results;

    var module_chain = function(klass) {
      var included = [];

      for (var i = 0; i != klass.$$inc.length; i++) {
        var mod_or_class = klass.$$inc[i];
        included.push(mod_or_class);
        included = included.concat(module_chain(mod_or_class));
      }

      return included;
    };

    results = module_chain(self);

    // need superclass's modules
    if (self.$$is_class) {
        for (var cls = self; cls; cls = cls.$$super) {
          results = results.concat(module_chain(cls));
        }
    }

    return results;
  }
end

#instance_method(name) ⇒ Object 



436
437
438
439
440
441
442
443
444
445
446
 
# File 'opal/opal/corelib/module.rb', line 436

def instance_method(name)
  %x{
    var meth = self.$$proto['$' + name];

    if (!meth || meth.$$stub) {
      #{raise NameError.new("undefined method `#{name}' for class `#{self.name}'", name)};
    }

    return #{UnboundMethod.new(self, `meth`, name)};
  }
end

#instance_methods(include_super = true) ⇒ Object Also known as: public_instance_methods 



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
 
# File 'opal/opal/corelib/module.rb', line 448

def instance_methods(include_super = true)
  %x{
    var methods = [],
        proto   = self.$$proto;

    for (var prop in proto) {
      if (prop.charAt(0) !== '$') {
        continue;
      }

      if (typeof(proto[prop]) !== "function") {
        continue;
      }

      if (proto[prop].$$stub) {
        continue;
      }

      if (!self.$$is_module) {
        if (self !== Opal.BasicObject && proto[prop] === Opal.BasicObject.$$proto[prop]) {
          continue;
        }

        if (!include_super && !proto.hasOwnProperty(prop)) {
          continue;
        }

        if (!include_super && proto[prop].$$donated) {
          continue;
        }
      }

      methods.push(prop.substr(1));
    }

    return methods;
  }
end

#instance_variables ⇒ Object 



634
635
636
637
638
639
640
641
642
643
644
645
646
647
 
# File 'opal/opal/corelib/module.rb', line 634

def instance_variables
  consts = constants
  %x{
    var result = [];

    for (var name in self) {
      if (self.hasOwnProperty(name) && name.charAt(0) !== '$' && name !== 'constructor' && !#{consts.include?(`name`)}) {
        result.push('@' + name);
      }
    }

    return result;
  }
end

#method_added ⇒ Object 



493
494
 
# File 'opal/opal/corelib/module.rb', line 493

def method_added(*)
end

#method_defined?(method) ⇒ Boolean Also known as: public_method_defined?

Returns:



553
554
555
556
557
558
 
# File 'opal/opal/corelib/module.rb', line 553

def method_defined?(method)
  %x{
    var body = self.$$proto['$' + method];
    return (!!body) && !body.$$stub;
  }
end

#method_removed ⇒ Object 



496
497
 
# File 'opal/opal/corelib/module.rb', line 496

def method_removed(*)
end

#method_undefined ⇒ Object 



499
500
 
# File 'opal/opal/corelib/module.rb', line 499

def method_undefined(*)
end

#module_eval(*args, &block) ⇒ Object Also known as: class_eval 



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
 
# File 'opal/opal/corelib/module.rb', line 502

def module_eval(*args, &block)
  if block.nil? && `!!Opal.compile`
    Kernel.raise ArgumentError, "wrong number of arguments (0 for 1..3)" unless (1..3).cover? args.size

    string, file, _lineno = *args
    default_eval_options = { file: (file || '(eval)'), eval: true }
    compiling_options = __OPAL_COMPILER_CONFIG__.merge(default_eval_options)
    compiled = Opal.compile string, compiling_options
    block = Kernel.proc do
      %x{
        return (function(self) {
          return eval(compiled);
        })(self)
      }
    end
  elsif args.size > 0
    Kernel.raise ArgumentError, "wrong number of arguments (#{args.size} for 0)"
  end

  %x{
    var old = block.$$s,
        result;

    block.$$s = null;
    result = block.apply(self, [self]);
    block.$$s = old;

    return result;
  }
end

#module_exec(*args, &block) ⇒ Object Also known as: class_exec 



535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
 
# File 'opal/opal/corelib/module.rb', line 535

def module_exec(*args, &block)
  %x{
    if (block === nil) {
      #{raise LocalJumpError, 'no block given'}
    }

    var block_self = block.$$s, result;

    block.$$s = null;
    result = block.apply(self, args);
    block.$$s = block_self;

    return result;
  }
end

#module_function(*methods) ⇒ Object 



560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
 
# File 'opal/opal/corelib/module.rb', line 560

def module_function(*methods)
  %x{
    if (methods.length === 0) {
      self.$$module_function = true;
    }
    else {
      for (var i = 0, length = methods.length; i < length; i++) {
        var meth = methods[i],
            id   = '$' + meth,
            func = self.$$proto[id];

        Opal.defs(self, id, func);
      }
    }

    return self;
  }
end

#name ⇒ Object 



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
 
# File 'opal/opal/corelib/module.rb', line 579

def name
  %x{
    if (self.$$full_name) {
      return self.$$full_name;
    }

    var result = [], base = self;

    while (base) {
      if (base.$$name === nil) {
        return result.length === 0 ? nil : result.join('::');
      }

      result.unshift(base.$$name);

      base = base.$$base_module;

      if (base === Opal.Object) {
        break;
      }
    }

    if (result.length === 0) {
      return nil;
    }

    return self.$$full_name = result.join('::');
  }
end

#private_class_method ⇒ Object Also known as: public_class_method 



153
154
155
 
# File 'opal/opal/corelib/unsupported.rb', line 153

def private_class_method(*)
  self
end

#private_constant ⇒ Object 



163
164
 
# File 'opal/opal/corelib/unsupported.rb', line 163

def private_constant(*)
end

#private_method_defined?(obj) ⇒ Boolean Also known as: protected_method_defined?

Returns:



159
160
161
 
# File 'opal/opal/corelib/unsupported.rb', line 159

def private_method_defined?(obj)
  false
end

#public(*methods) ⇒ Object Also known as: private, protected, nesting 



137
138
139
140
141
142
143
144
145
 
# File 'opal/opal/corelib/unsupported.rb', line 137

def public(*methods)
  %x{
    if (methods.length === 0) {
      self.$$module_function = false;
    }

    return nil;
  }
end

#remove_class_variable ⇒ Object 



609
610
 
# File 'opal/opal/corelib/module.rb', line 609

def remove_class_variable(*)
end

#remove_const(name) ⇒ Object 



612
613
614
615
616
617
618
 
# File 'opal/opal/corelib/module.rb', line 612

def remove_const(name)
  %x{
    var old = self.$$scope[name];
    delete self.$$scope[name];
    return old;
  }
end

#remove_method(*names) ⇒ Object 



358
359
360
361
362
363
364
365
366
 
# File 'opal/opal/corelib/module.rb', line 358

def remove_method(*names)
  %x{
    for (var i = 0, length = names.length; i < length; i++) {
      Opal.rdef(self, "$" + names[i]);
    }
  }

  self
end

#singleton_class? ⇒ Boolean

Returns:



368
369
370
 
# File 'opal/opal/corelib/module.rb', line 368

def singleton_class?
  `!!self.$$is_singleton`
end

#to_s ⇒ Object 



620
621
622
 
# File 'opal/opal/corelib/module.rb', line 620

def to_s
  `Opal.Module.$name.call(self)` || "#<#{`self.$$is_module ? 'Module' : 'Class'`}:0x#{__id__.to_s(16)}>"
end

#undef_method(*names) ⇒ Object 



624
625
626
627
628
629
630
631
632
 
# File 'opal/opal/corelib/module.rb', line 624

def undef_method(*names)
  %x{
    for (var i = 0, length = names.length; i < length; i++) {
      Opal.udef(self, "$" + names[i]);
    }
  }

  self
end