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 12
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 41
def [](k)
  @map[normalize(k)]
end
[]=(k, v) click to toggle source

@private

# File lib/sassc/util/normalized_map.rb, line 33
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 58
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 51
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 28
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 94
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 74
def each
  @map.each {|k, v| yield(k, v)}
end
empty?() click to toggle source
# File lib/sassc/util/normalized_map.rb, line 62
def empty?
  @map.empty?
end
has_key?(k) click to toggle source

@private

# File lib/sassc/util/normalized_map.rb, line 46
def has_key?(k)
  @map.has_key?(normalize(k))
end
keys() click to toggle source
# File lib/sassc/util/normalized_map.rb, line 70
def keys
  @map.keys
end
map() { |k, v| ... } click to toggle source
# File lib/sassc/util/normalized_map.rb, line 90
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 109
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 20
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 113
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 78
def size
  @map.size
end
sort_by() { |k, v| ... } click to toggle source
# File lib/sassc/util/normalized_map.rb, line 100
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 86
def to_a
  @map.to_a
end
to_hash() click to toggle source
# File lib/sassc/util/normalized_map.rb, line 82
def to_hash
  @map.dup
end
update(map) click to toggle source
# File lib/sassc/util/normalized_map.rb, line 104
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 66
def values
  @map.values
end