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# File 'lib/keisan/ast/builder.rb', line 5
def initialize(string: nil, parser: nil, components: nil)
if [string, parser, components].select(&:nil?).size != 2
raise Exceptions::InternalError.new("Require one of string, parser or components")
end
if !string.nil?
@components = Parser.new(string: string).components
elsif !parser.nil?
@components = parser.components
else
@components = Array(components)
end
@lines = Util.array_split(@components) {|component|
component.is_a?(Parsing::LineSeparator)
}.reject(&:empty?)
@line_builders = @lines.map {|line| LineBuilder.new(line)}
if @line_builders.size == 1
@node = @line_builders.first.ast
else
@node = MultiLine.new(@line_builders.map(&:ast))
end
end
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