Class: Parslet::Accelerator::Apply Private

Inherits:
Object
  • Object
show all
Defined in:
lib/parslet/accelerator/engine.rb

This class is part of a private API. You should avoid using this class if possible, as it may be removed or be changed in the future.

Instance Method Summary collapse

Constructor Details

#initialize(engine, expr) ⇒ Apply

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns a new instance of Apply.



7
8
9
10
 
# File 'lib/parslet/accelerator/engine.rb', line 7

def initialize(engine, expr)
  @engine = engine
  @expr = expr
end

Instance Method Details

#match(type_tag) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



67
68
69
70
71
72
 
# File 'lib/parslet/accelerator/engine.rb', line 67

def match(type_tag)
  expr_tag = @expr.type
  if expr_tag == type_tag
    yield *@expr.args
  end
end

#visit_alternative(alternatives) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



28
29
30
31
32
33
34
35
36
 
# File 'lib/parslet/accelerator/engine.rb', line 28

def visit_alternative(alternatives)
  match(:alt) do |*expressions|
    return false if alternatives.size != expressions.size

    alternatives.zip(expressions).all? do |atom, expr|
      @engine.match(atom, expr)
    end
  end
end

#visit_entity(name, block) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



15
16
17
 
# File 'lib/parslet/accelerator/engine.rb', line 15

def visit_entity(name, block)
  false
end

#visit_lookahead(positive, atom) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



46
47
48
49
50
51
52
53
 
# File 'lib/parslet/accelerator/engine.rb', line 46

def visit_lookahead(positive, atom)
  match(:absent) do |expr|
    return positive == false && @engine.match(atom, expr)
  end
  match(:present) do |expr|
    return positive == true && @engine.match(atom, expr)
  end
end

#visit_named(name, atom) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



18
19
20
21
22
 
# File 'lib/parslet/accelerator/engine.rb', line 18

def visit_named(name, atom)
  match(:as) do |key|
    @engine.try_bind(key, name)
  end
end

#visit_parser(root) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



12
13
14
 
# File 'lib/parslet/accelerator/engine.rb', line 12

def visit_parser(root)
  false
end

#visit_re(regexp) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



54
55
56
57
58
59
 
# File 'lib/parslet/accelerator/engine.rb', line 54

def visit_re(regexp)
  match(:re) do |*bind_conditions|
    bind_conditions.all? { |bind_cond| 
      @engine.try_bind(bind_cond, regexp) }
  end
end

#visit_repetition(tag, min, max, atom) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



23
24
25
26
27
 
# File 'lib/parslet/accelerator/engine.rb', line 23

def visit_repetition(tag, min, max, atom)
  match(:rep) do |e_min, e_max, expr|
    e_min == min && e_max == max && @engine.match(atom, expr)
  end
end

#visit_sequence(sequence) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



37
38
39
40
41
42
43
44
45
 
# File 'lib/parslet/accelerator/engine.rb', line 37

def visit_sequence(sequence)
  match(:seq) do |*expressions|
    return false if sequence.size != expressions.size

    sequence.zip(expressions).all? do |atom, expr|
      @engine.match(atom, expr)
    end
  end
end

#visit_str(str) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



60
61
62
63
64
65
 
# File 'lib/parslet/accelerator/engine.rb', line 60

def visit_str(str)
  match(:str) do |*bind_conditions|
    bind_conditions.all? { |bind_cond| 
      @engine.try_bind(bind_cond, str) }
  end
end