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module ActionView #:nodoc:
# = Action View PathSet
#
# This class is used to store and access paths in Action View. A number of
# operations are defined so that you can search among the paths in this
# set and also perform operations on other +PathSet+ objects.
#
# A +LookupContext+ will use a +PathSet+ to store the paths in its context.
class PathSet #:nodoc:
include Enumerable
attr_reader :paths
delegate :[], :include?, :pop, :size, :each, to: :paths
def initialize(paths = [])
@paths = typecast paths
end
def initialize_copy(other)
@paths = other.paths.dup
self
end
def to_ary
paths.dup
end
def compact
PathSet.new paths.compact
end
def +(array)
PathSet.new(paths + array)
end
%w(<< concat push insert unshift).each do |method|
class_eval <<-METHOD, __FILE__, __LINE__ + 1
def #{method}(*args)
paths.#{method}(*typecast(args))
end
METHOD
end
def find(*args)
find_all(*args).first || raise(MissingTemplate.new(self, *args))
end
def find_all(path, prefixes = [], *args)
prefixes = [prefixes] if String === prefixes
prefixes.each do |prefix|
paths.each do |resolver|
templates = resolver.find_all(path, prefix, *args)
return templates unless templates.empty?
end
end
[]
end
def exists?(path, prefixes, *args)
find_all(path, prefixes, *args).any?
end
private
def typecast(paths)
paths.map do |path|
case path
when Pathname, String
OptimizedFileSystemResolver.new path.to_s
else
path
end
end
end
end
end
|
