Class: Sexp::Child

Inherits:
Matcher show all
Defined in:
lib/sexp.rb

Overview

Matches anything that has a child matching the sub-expression

example:

s(s(s(s(s(:a))))) / s{ child(s(:a)) } #=> [s(s(s(s(s(:a))))),
                                           s(s(s(s(:a)))),
                                           s(s(s(:a))),
                                           s(s(:a)),
                                           s(:a)]

Instance Attribute Summary collapse

Attributes inherited from Sexp

#comments, #file, #line

Instance Method Summary collapse

Methods inherited from Matcher

#&, #-@, #/, #=~, #>>, #greedy?, match_subs=, match_subs?, parse, #|

Methods inherited from Sexp

#/, #=~, _, ___, all, any, #array_type?, atom, child, #compact, #deep_each, #depth, #each_of_type, #each_sexp, #find_and_replace_all, #find_node, #find_nodes, from_array, #gsub, include, #line_max, m, #map, #mass, #method_missing, #new, not?, #replace_sexp, #respond_to?, s, #search_each, #sexp_body, #sexp_body=, #sexp_type, #sexp_type=, #shift, #structure, #sub, t, #to_a

Constructor Details

#initialize(child) ⇒ Child

Create a Child matcher which will match anything having a descendant matching child.



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# File 'lib/sexp.rb', line 1100

def initialize child
  @child = child
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method in the class Sexp

Instance Attribute Details

#child ⇒ Object (readonly)

The child to match.



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# File 'lib/sexp.rb', line 1094

def child
  @child
end

Instance Method Details

#==(o) ⇒ Object

:nodoc:



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# File 'lib/sexp.rb', line 1116

def == o # :nodoc:
  super && self.child == o.child
end

#inspect ⇒ Object

:nodoc:



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# File 'lib/sexp.rb', line 1120

def inspect # :nodoc:
  "child(%p)" % [child]
end

#pretty_print(q) ⇒ Object

:nodoc:



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# File 'lib/sexp.rb', line 1124

def pretty_print q # :nodoc:
  q.group 1, "child(", ")" do
    q.pp child
  end
end

#satisfy?(o) ⇒ Boolean

Satisfied if matches child or o has a descendant matching child.

Returns:

  • (Boolean) 


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# File 'lib/sexp.rb', line 1108

def satisfy? o
  if child.satisfy? o
    true
  elsif o.kind_of? Sexp
    o.search_each(child).any?
  end
end