def _nt_space
start_index = index
if node_cache[:space].has_key?(index)
cached = node_cache[:space][index]
if cached
cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
@index = cached.interval.end
end
return cached
end
s0, i0 = [], index
loop do
i1 = index
r2 = _nt_white
if r2
r1 = r2
else
r3 = _nt_comment_to_eol
if r3
r1 = r3
else
@index = i1
r1 = nil
end
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)
end
node_cache[:space][start_index] = r0
r0
end