class SassC::Util::NormalizedMap

A hash that normalizes its string keys while still allowing you to get back to the original keys that were stored. If several different values normalize to the same value, whichever is stored last wins.

Public Class Methods

new(map = nil) click to toggle source

Create a normalized map

# File lib/sassc/util/normalized_map.rb, line 11
def initialize(map = nil)
  @key_strings = {}
  @map = {}
  map.each {|key, value| self[key] = value} if map
end

Public Instance Methods

[](k) click to toggle source

@private

# File lib/sassc/util/normalized_map.rb, line 40
def [](k)
  @map[normalize(k)]
end
[]=(k, v) click to toggle source

@private

# File lib/sassc/util/normalized_map.rb, line 32
def []=(k, v)
  normalized = normalize(k)
  @map[normalized] = v
  @key_strings[normalized] = k
  v
end
as_stored() click to toggle source

@return [Hash] Hash with the keys as they were stored (before normalization).

# File lib/sassc/util/normalized_map.rb, line 57
def as_stored
  SassC::Util.map_keys(@map) {|k| @key_strings[k]}
end
delete(k) click to toggle source

@private

# File lib/sassc/util/normalized_map.rb, line 50
def delete(k)
  normalized = normalize(k)
  @key_strings.delete(normalized)
  @map.delete(normalized)
end
denormalize(key) click to toggle source

Returns the version of `key` as it was stored before normalization. If `key` isn't in the map, returns it as it was passed in. @return [String]

# File lib/sassc/util/normalized_map.rb, line 27
def denormalize(key)
  @key_strings[normalize(key)] || key
end
dup() click to toggle source
Calls superclass method
# File lib/sassc/util/normalized_map.rb, line 93
def dup
  d = super
  d.send(:instance_variable_set, "@map", @map.dup)
  d
end
each() { |k, v| ... } click to toggle source
# File lib/sassc/util/normalized_map.rb, line 73
def each
  @map.each {|k, v| yield(k, v)}
end
empty?() click to toggle source
# File lib/sassc/util/normalized_map.rb, line 61
def empty?
  @map.empty?
end
has_key?(k) click to toggle source

@private

# File lib/sassc/util/normalized_map.rb, line 45
def has_key?(k)
  @map.has_key?(normalize(k))
end
keys() click to toggle source
# File lib/sassc/util/normalized_map.rb, line 69
def keys
  @map.keys
end
map() { |k, v| ... } click to toggle source
# File lib/sassc/util/normalized_map.rb, line 89
def map
  @map.map {|k, v| yield(k, v)}
end
method_missing(method, *args, &block) click to toggle source
# File lib/sassc/util/normalized_map.rb, line 108
def method_missing(method, *args, &block)
  @map.send(method, *args, &block)
end
normalize(key) click to toggle source

Specifies how to transform the key. This can be overridden to create other normalization behaviors.

# File lib/sassc/util/normalized_map.rb, line 19
def normalize(key)
  key.tr("-", "_")
end
respond_to_missing?(method, include_private = false) click to toggle source
# File lib/sassc/util/normalized_map.rb, line 112
def respond_to_missing?(method, include_private = false)
  @map.respond_to?(method, include_private)
end
size() click to toggle source
# File lib/sassc/util/normalized_map.rb, line 77
def size
  @map.size
end
sort_by() { |k, v| ... } click to toggle source
# File lib/sassc/util/normalized_map.rb, line 99
def sort_by
  @map.sort_by {|k, v| yield k, v}
end
to_a() click to toggle source
# File lib/sassc/util/normalized_map.rb, line 85
def to_a
  @map.to_a
end
to_hash() click to toggle source
# File lib/sassc/util/normalized_map.rb, line 81
def to_hash
  @map.dup
end
update(map) click to toggle source
# File lib/sassc/util/normalized_map.rb, line 103
def update(map)
  map = map.as_stored if map.is_a?(NormalizedMap)
  map.each {|k, v| self[k] = v}
end
values() click to toggle source
# File lib/sassc/util/normalized_map.rb, line 65
def values
  @map.values
end