103 lines
2.1 KiB
Ruby
103 lines
2.1 KiB
Ruby
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# -*- coding: utf-8 -*- #
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# frozen_string_literal: true
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module Rouge
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class InheritableHash < Hash
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def initialize(parent=nil)
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@parent = parent
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end
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def [](k)
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value = super
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return value if own_keys.include?(k)
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value || parent[k]
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end
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def parent
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@parent ||= {}
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end
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def include?(k)
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super or parent.include?(k)
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end
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def each(&b)
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keys.each do |k|
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b.call(k, self[k])
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end
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end
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alias own_keys keys
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def keys
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keys = own_keys.concat(parent.keys)
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keys.uniq!
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keys
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end
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end
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class InheritableList
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include Enumerable
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def initialize(parent=nil)
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@parent = parent
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end
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def parent
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@parent ||= []
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end
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def each(&b)
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return enum_for(:each) unless block_given?
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parent.each(&b)
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own_entries.each(&b)
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end
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def own_entries
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@own_entries ||= []
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end
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def push(o)
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own_entries << o
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end
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alias << push
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end
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# shared methods for some indentation-sensitive lexers
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module Indentation
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def reset!
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super
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@block_state = @block_indentation = nil
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end
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# push a state for the next indented block
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def starts_block(block_state)
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@block_state = block_state
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@block_indentation = @last_indentation || ''
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puts " starts_block: #{block_state.inspect}" if @debug
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puts " block_indentation: #{@block_indentation.inspect}" if @debug
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end
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# handle a single indented line
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def indentation(indent_str)
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puts " indentation: #{indent_str.inspect}" if @debug
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puts " block_indentation: #{@block_indentation.inspect}" if @debug
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@last_indentation = indent_str
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# if it's an indent and we know where to go next,
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# push that state. otherwise, push content and
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# clear the block state.
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if (@block_state &&
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indent_str.start_with?(@block_indentation) &&
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indent_str != @block_indentation
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)
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push @block_state
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else
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@block_state = @block_indentation = nil
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push :content
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end
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end
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end
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end
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