Sha256: 8db48dfc5db9463aa980df643d167b737c36e977a9e523cabf750c4f4e107596
Contents?: true
Size: 1.35 KB
Versions: 24
Compression:
Stored size: 1.35 KB
Contents
module Mutant
class Matcher
class Method
# Visitor to find last match inside AST
class Finder
# Run finder
#
# @param [Parser::AST::Node]
#
# @return [Parser::AST::Node]
# if found
#
# @return [nil]
# otherwise
#
# @api private
#
#
def self.run(root, &predicate)
new(root, predicate).match
end
private_class_method :new
# Return match
#
# @return [Parser::AST::Node]
#
# @api private
#
attr_reader :match
private
# Initialize object
#
# @param [Parer::AST::Node]
#
# @return [undefined]
#
# @api private
#
#
def initialize(root, predicate)
@root, @predicate = root, predicate
visit(root)
end
# Visit node
#
# @param [Parser::AST::Node] node
#
# @return [undefined]
#
# @api private
#
def visit(node)
if @predicate.call(node)
@match = node
end
node.children.each do |child|
visit(child) if child.kind_of?(Parser::AST::Node)
end
end
end # Finder
end # Method
end # Matcher
end # Mutant
Version data entries
24 entries across 24 versions & 1 rubygems