Module: Musicality::Parsing::NonnegativeInteger
Defined Under Namespace
Modules: NonnegativeInteger0
Instance Method Summary
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Instance Method Details
#_nt_nonnegative_integer ⇒ Object
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# File 'lib/musicality/notation/parsing/numbers/nonnegative_integer_parsing.rb', line 22
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
if s0.empty?
@index = i0
r0 = nil
else
r0 = instantiate_node(SyntaxNode,input, i0...index, s0)
r0.extend(NonnegativeInteger0)
r0.extend(NonnegativeInteger0)
end
node_cache[:nonnegative_integer][start_index] = r0
r0
end
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#root ⇒ Object
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# File 'lib/musicality/notation/parsing/numbers/nonnegative_integer_parsing.rb', line 10
def root
@root ||= :nonnegative_integer
end
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