Class: Journey::Path::Pattern::RegexpOffsets

Inherits:
Visitors::Visitor show all
Defined in:
lib/journey/path/pattern.rb

Overview

:nodoc:

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods inherited from Visitors::Visitor

#accept

Constructor Details

#initialize(matchers) ⇒ RegexpOffsets

Returns a new instance of RegexpOffsets.



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# File 'lib/journey/path/pattern.rb', line 62

def initialize matchers
  @matchers      = matchers
  @capture_count = [0]
end

Instance Attribute Details

#offsets ⇒ Object (readonly)

Returns the value of attribute offsets.



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# File 'lib/journey/path/pattern.rb', line 60

def offsets
  @offsets
end

Instance Method Details

#visit(node) ⇒ Object 



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# File 'lib/journey/path/pattern.rb', line 67

def visit node
  super
  @capture_count
end

#visit_SYMBOL(node) ⇒ Object 



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# File 'lib/journey/path/pattern.rb', line 72

def visit_SYMBOL node
  node = node.to_sym

  if @matchers.key? node
    re = /#{@matchers[node]}|/
    @capture_count.push((re.match('').length - 1) + (@capture_count.last || 0))
  else
    @capture_count << (@capture_count.last || 0)
  end
end