On 3/23/2018 4:11 PM, René Scharfe wrote:
Am 23.03.2018 um 20:55 schrieb Jeff Hostetler:
+struct json_writer_level
+{
+ unsigned level_is_array : 1;
+ unsigned level_is_empty : 1;
+};
+
+struct json_writer
+{
+ struct json_writer_level *levels;
+ int nr, alloc;
+ struct strbuf json;
+};
A simpler and probably more compact representation of is_array would
be a strbuf with one char per level, e.g. '[' for an array and '{'
for an object (or ']' and '}').
I don't understand the need to track emptiness per level. Only the
top level array/object can ever be empty, can it?
My expectation was that any sub-object or sub-array could be empty.
That is, this should be valid (and the JSON parser in Python allows):
{"a":{}, "b":[], "c":[[]], "d":[{}]}
Sure, but the emptiness of finished arrays and objects doesn't matter
for the purposes of error checking, comma setting or closing. At most
one of them is empty *and* unclosed while writing the overall JSON
object -- the last one opened:
{
{"a":{
{"a":{}, "b":[
{"a":{}, "b":[], "c":[
{"a":{}, "b":[], "c":[[
{"a":{}, "b":[], "c":[[]], "d":[
{"a":{}, "b":[], "c":[[]], "d":[{
Any of the earlier written arrays/objects are either closed or contain
at least a half-done sub-array/object, which makes them non-empty.
René
good point. i'll revisit. thanks.
Jeff