def _nt_cell
start_index = index
if node_cache[:cell].has_key?(index)
cached = node_cache[:cell][index]
@index = cached.interval.end if cached
return cached
end
s0, i0 = [], index
loop do
i1, s1 = index, []
i2 = index
i3 = index
if has_terminal?('|', false, index)
r4 = instantiate_node(SyntaxNode,input, index...(index + 1))
@index += 1
else
terminal_parse_failure('|')
r4 = nil
end
if r4
r3 = r4
else
r5 = _nt_eol
if r5
r3 = r5
else
@index = i3
r3 = nil
end
end
if r3
r2 = nil
else
@index = i2
r2 = instantiate_node(SyntaxNode,input, index...index)
end
s1 << r2
if r2
if index < input_length
r6 = instantiate_node(SyntaxNode,input, index...(index + 1))
@index += 1
else
terminal_parse_failure("any character")
r6 = nil
end
s1 << r6
end
if s1.last
r1 = instantiate_node(SyntaxNode,input, i1...index, s1)
r1.extend(Cell0)
else
@index = i1
r1 = nil
end
if r1
s0 << r1
else
break
end
end
r0 = instantiate_node(SyntaxNode,input, i0...index, s0)
node_cache[:cell][start_index] = r0
r0
end