class RecentRuby::XMLAST
Class comes from: medium.com/rubyinside/using-xpath-to-rewrite-ruby-code-with-ease-8f635af65b5b TODO: turn into a separate gem
Attributes
doc[R]
Public Class Methods
new(sexp)
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# File lib/recent_ruby/xml_ast.rb, line 14 def initialize(sexp) @doc = Document.new '<root></root>' @sexp = sexp root = @doc.root populate_tree(root, sexp) end
Public Instance Methods
populate_tree(xml, sexp)
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# File lib/recent_ruby/xml_ast.rb, line 21 def populate_tree(xml, sexp) if sexp.is_a?(String) || sexp.is_a?(Symbol) || sexp.is_a?(Numeric) || sexp.is_a?(NilClass) el = Element.new(sexp.class.to_s.downcase + '-val') el.add_attribute 'value', sexp.to_s xml.add_element el else el = Element.new(sexp.type.to_s) el.add_attribute('id', sexp.object_id) sexp.children.each { |n| populate_tree(el, n) } xml.add_element el end end
pp()
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# File lib/recent_ruby/xml_ast.rb, line 56 def pp doc.write(STDOUT, 2) end
treewalk(sexp = @sexp)
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# File lib/recent_ruby/xml_ast.rb, line 38 def treewalk(sexp = @sexp) return sexp unless sexp&.respond_to?(:children) [sexp, sexp.children.map { |n| treewalk(n) }].flatten end
xpath(path)
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# File lib/recent_ruby/xml_ast.rb, line 43 def xpath(path) results = XPath.match(doc, path) results.map do |n| if n.respond_to?(:attributes) && n.attributes['id'] treewalk.find do |m| m.object_id.to_s == n.attributes['id'] end else n end end end