def _nt_composite_type
start_index = index
if node_cache[:composite_type].has_key?(index)
cached = node_cache[:composite_type][index]
@index = cached.interval.end if cached
return cached
end
i0 = index
if has_terminal?("message", false, index)
r1 = instantiate_node(SyntaxNode,input, index...(index + 7))
@index += 7
else
terminal_parse_failure("message")
r1 = nil
end
if r1
r0 = r1
else
if has_terminal?("multipart", false, index)
r2 = instantiate_node(SyntaxNode,input, index...(index + 9))
@index += 9
else
terminal_parse_failure("multipart")
r2 = nil
end
if r2
r0 = r2
else
r3 = _nt_extension_token
if r3
r0 = r3
else
@index = i0
r0 = nil
end
end
end
node_cache[:composite_type][start_index] = r0
r0
end