def _nt_predicate_block
start_index = index
if node_cache[:predicate_block].has_key?(index)
cached = node_cache[:predicate_block][index]
if cached
cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
@index = cached.interval.end
end
return cached
end
i0, s0 = index, []
if has_terminal?('', false, index)
r1 = instantiate_node(SyntaxNode,input, index...(index + 0))
@index += 0
else
terminal_parse_failure('')
r1 = nil
end
s0 << r1
if r1
r2 = _nt_inline_module
s0 << r2
end
if s0.last
r0 = instantiate_node(PredicateBlock,input, i0...index, s0)
r0.extend(PredicateBlock0)
else
@index = i0
r0 = nil
end
node_cache[:predicate_block][start_index] = r0
r0
end