def _nt_keyword_inside_grammar
start_index = index
if node_cache[:keyword_inside_grammar].has_key?(index)
cached = node_cache[:keyword_inside_grammar][index]
@index = cached.interval.end if cached
return cached
end
i0, s0 = index, []
i1 = index
if input.index('rule', index) == index
r2 = instantiate_node(SyntaxNode,input, index...(index + 4))
@index += 4
else
terminal_parse_failure('rule')
r2 = nil
end
if r2
r1 = r2
else
if input.index('end', index) == index
r3 = instantiate_node(SyntaxNode,input, index...(index + 3))
@index += 3
else
terminal_parse_failure('end')
r3 = nil
end
if r3
r1 = r3
else
self.index = i1
r1 = nil
end
end
s0 << r1
if r1
i4 = index
r5 = _nt_non_space_char
if r5
r4 = nil
else
self.index = i4
r4 = instantiate_node(SyntaxNode,input, index...index)
end
s0 << r4
end
if s0.last
r0 = instantiate_node(SyntaxNode,input, i0...index, s0)
r0.extend(KeywordInsideGrammar0)
else
self.index = i0
r0 = nil
end
node_cache[:keyword_inside_grammar][start_index] = r0
return r0
end