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
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# 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
Create a normalized map
Public Instance Methods
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# File lib/sassc/util/normalized_map.rb, line 41 def [](k) @map[normalize(k)] end
@private
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# File lib/sassc/util/normalized_map.rb, line 33 def []=(k, v) normalized = normalize(k) @map[normalized] = v @key_strings[normalized] = k v end
@private
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# File lib/sassc/util/normalized_map.rb, line 58 def as_stored SassC::Util.map_keys(@map) {|k| @key_strings[k]} end
@return [Hash] Hash with the keys as they were stored (before normalization).
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# File lib/sassc/util/normalized_map.rb, line 51 def delete(k) normalized = normalize(k) @key_strings.delete(normalized) @map.delete(normalized) end
@private
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# File lib/sassc/util/normalized_map.rb, line 28 def denormalize(key) @key_strings[normalize(key)] || key end
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]
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# File lib/sassc/util/normalized_map.rb, line 94 def dup d = super d.send(:instance_variable_set, "@map", @map.dup) d end
Calls superclass method
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# File lib/sassc/util/normalized_map.rb, line 74 def each @map.each {|k, v| yield(k, v)} end
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# File lib/sassc/util/normalized_map.rb, line 46 def has_key?(k) @map.has_key?(normalize(k)) end
@private
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# File lib/sassc/util/normalized_map.rb, line 90 def map @map.map {|k, v| yield(k, v)} end
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# File lib/sassc/util/normalized_map.rb, line 109 def method_missing(method, *args, &block) @map.send(method, *args, &block) end
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# File lib/sassc/util/normalized_map.rb, line 20 def normalize(key) key.tr("-", "_") end
Specifies how to transform the key. This can be overridden to create other normalization behaviors.
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# File lib/sassc/util/normalized_map.rb, line 113 def respond_to_missing?(method, include_private = false) @map.respond_to?(method, include_private) end
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# File lib/sassc/util/normalized_map.rb, line 100 def sort_by @map.sort_by {|k, v| yield k, v} end
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# 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