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|
class Bundler::Thor
module CoreExt
class OrderedHash < ::Hash
if RUBY_VERSION < "1.9"
def initialize(*args, &block)
super
@keys = []
end
def initialize_copy(other)
super
# make a deep copy of keys
@keys = other.keys
end
def []=(key, value)
@keys << key unless key?(key)
super
end
def delete(key)
if key? key
index = @keys.index(key)
@keys.delete_at index
end
super
end
def delete_if
super
sync_keys!
self
end
alias_method :reject!, :delete_if
def reject(&block)
dup.reject!(&block)
end
def keys
@keys.dup
end
def values
@keys.map { |key| self[key] }
end
def to_hash
self
end
def to_a
@keys.map { |key| [key, self[key]] }
end
def each_key
return to_enum(:each_key) unless block_given?
@keys.each { |key| yield(key) }
self
end
def each_value
return to_enum(:each_value) unless block_given?
@keys.each { |key| yield(self[key]) }
self
end
def each
return to_enum(:each) unless block_given?
@keys.each { |key| yield([key, self[key]]) }
self
end
def each_pair
return to_enum(:each_pair) unless block_given?
@keys.each { |key| yield(key, self[key]) }
self
end
alias_method :select, :find_all
def clear
super
@keys.clear
self
end
def shift
k = @keys.first
v = delete(k)
[k, v]
end
def merge!(other_hash)
if block_given?
other_hash.each { |k, v| self[k] = key?(k) ? yield(k, self[k], v) : v }
else
other_hash.each { |k, v| self[k] = v }
end
self
end
alias_method :update, :merge!
def merge(other_hash, &block)
dup.merge!(other_hash, &block)
end
# When replacing with another hash, the initial order of our keys must come from the other hash -ordered or not.
def replace(other)
super
@keys = other.keys
self
end
def inspect
"#<#{self.class} #{super}>"
end
private
def sync_keys!
@keys.delete_if { |k| !key?(k) }
end
end
end
end
end
|
