74 lines
1.9 KiB
Ruby
74 lines
1.9 KiB
Ruby
# If a class defines to_sof_node it tells the write that it will generate Nodes itself
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# this delegates to array_to_sof_node
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Array.class_eval do
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def to_sof_node(writer , level , ref )
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Sof.array_to_sof_node(self , writer , level , ref )
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end
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end
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module Sof
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# Creates a ArrayNode (see there) for the Array.
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# This mainly involves creating nodes for the children
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def self.array_to_sof_node(array , writer , level , ref )
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node = Sof::ArrayNode.new(ref)
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array.each do |object|
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node.add writer.to_sof_node( object , level + 1)
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end
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node
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end
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# A ArrayNode is a Node for a Array. See Node for when and how nodes are used in Sof.
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# A ArrayNode has a list of children that hold the value node representations for
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# the arrays values.
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#
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class ArrayNode < Node
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def initialize ref
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super(ref)
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@children = []
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end
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attr_reader :children
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def add c
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@children << c
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end
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# The output of a Array can be a long or a short format
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# The short is used for 7 or less SimpleNodes
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def out io , level
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super
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short = true
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children.each do |c|
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short = false unless c.is_a?(SimpleNode)
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end
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if(short and children.length < 7 )
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short_out(io , level)
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else
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long_out(io , level)
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end
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end
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private
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# This defines the short output which is basically what you would write in ruby
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# ie [ value1 , value2 , ...]
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def short_out(io,level)
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io.write("[")
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@children.each_with_index do |child , i|
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child.out(io , level + 1 )
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io.write ", " unless (i+1) == children.length
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end
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io.write("]")
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end
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# Arrays start with the minus on each line "-"
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# and each line has the value
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def long_out io , level
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indent = " " * level
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@children.each_with_index do |child , i|
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io.write "\n#{indent}" unless i == 0
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io.write "- "
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child.out(io , level + 1)
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end
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end
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end
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end
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