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module Scale
class DSL
def run
DSLBuilder.new.tap do |builder|
yield builder
end.to_xml
end
end
class DSLCommand
def initialize(name, args, block)
@name = name
@args = args
@block = block
end
def run(svg)
type = Kernel.const_get("Scale::#{@name.to_s.capitalize}")
svg.add(type.new(*@args))
end
end
class DSLBuilder
def initialize(commands = [])
@commands = commands
end
def method_missing(name, *args, &block)
@commands.push(DSLCommand.new(name, args, block))
end
def to_xml
svg = SVG.new
@commands.each do |command|
command.run(svg)
end
svg.to_xml
end
end
end
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