module Music::Transcription::Parsing::NonnegativeInteger
Public Instance Methods
_nt_nonnegative_integer()
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# File lib/music-transcription/parsing/numbers/nonnegative_integer_parsing.rb, line 23 def _nt_nonnegative_integer start_index = index if node_cache[:nonnegative_integer].has_key?(index) cached = node_cache[:nonnegative_integer][index] if cached node_cache[:nonnegative_integer][index] = cached = SyntaxNode.new(input, index...(index + 1)) if cached == true @index = cached.interval.end end return cached end s0, i0 = [], index loop do if has_terminal?(@regexps[gr = '\A[0-9]'] ||= Regexp.new(gr), :regexp, index) r1 = true @index += 1 else terminal_parse_failure('[0-9]') r1 = nil end if r1 s0 << r1 else break end end r0 = instantiate_node(SyntaxNode,input, i0...index, s0) r0.extend(NonnegativeInteger0) node_cache[:nonnegative_integer][start_index] = r0 r0 end
root()
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# File lib/music-transcription/parsing/numbers/nonnegative_integer_parsing.rb, line 11 def root @root ||= :nonnegative_integer end