Class: Atomy::Pattern::Or

Inherits:
Atomy::Pattern show all
Defined in:
lib/atomy/pattern/or.rb

Instance Attribute Summary collapse

Attributes inherited from Atomy::Pattern

#from_node

Instance Method Summary collapse

Methods inherited from Atomy::Pattern

#===, #target

Constructor Details

#initialize(a, b) ⇒ Or

Returns a new instance of Or.



7
8
9
10
 
# File 'lib/atomy/pattern/or.rb', line 7

def initialize(a, b)
  @a = a
  @b = b
end

Instance Attribute Details

#a ⇒ Object (readonly)

Returns the value of attribute a.



5
6
7
 
# File 'lib/atomy/pattern/or.rb', line 5

def a
  @a
end

#b ⇒ Object (readonly)

Returns the value of attribute b.



5
6
7
 
# File 'lib/atomy/pattern/or.rb', line 5

def b
  @b
end

Instance Method Details

#inline_matches?(gen) ⇒ Boolean

Returns:

  • (Boolean) 


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
 
# File 'lib/atomy/pattern/or.rb', line 16

def inline_matches?(gen)
  match = gen.new_label
  done = gen.new_label

  # [value, value]
  gen.dup

  # [bool, value]
  @a.inline_matches?(gen)

  # [value]
  gen.goto_if_true(match)

  # [bool]
  @b.inline_matches?(gen)

  # [bool]
  gen.goto(done)

  # [value]
  match.set!

  # []
  gen.pop

  # [bool]
  gen.push_true

  # [bool]
  done.set!
end

#matches?(val) ⇒ Boolean

Returns:

  • (Boolean) 


12
13
14
 
# File 'lib/atomy/pattern/or.rb', line 12

def matches?(val)
  @a.matches?(val) || @b.matches?(val)
end