class SpdxParser
Constants
- SKIP_PARENS
Public Class Methods
parse(data)
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# File lib/spdx_parser.rb, line 13 def self.parse(data) data ||= "" parse_tree(data) end
parse_licenses(data)
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# File lib/spdx_parser.rb, line 18 def self.parse_licenses(data) tree = parse_tree(data) tree.get_licenses end
Private Class Methods
clean(root_node)
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# File lib/spdx_parser.rb, line 32 def self.clean(root_node) root_node.elements&.delete_if { |node| node.instance_of?(Treetop::Runtime::SyntaxNode) } end
parse_tree(data)
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# File lib/spdx_parser.rb, line 23 def self.parse_tree(data) parser = SpdxGrammarParser.new # The generated grammar parser is not thread safe tree = parser.parse(data) raise SpdxGrammar::SpdxParseError, "Unable to parse expression '#{data}'. Parse error at offset: #{parser.index}" if tree.nil? prune(tree) end
prune(root_node)
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# File lib/spdx_parser.rb, line 36 def self.prune(root_node) clean(root_node) root_node.elements&.each_with_index do |node, i| case node when SpdxGrammar::GroupedExpression, SpdxGrammar::Operand clean(node) child = node.elements[0] child.parent = root_node root_node.elements[i] = child case child when SpdxGrammar::GroupedExpression, SpdxGrammar::Operand # re-prune if child's child is a GroupedExpression or Operand prune(root_node) else prune(child) end else prune(node) end end case root_node when SpdxGrammar::GroupedExpression child = root_node.elements[0] child.parent = root_node.parent return child end root_node end