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Optimize encoding performance in Erlang #150

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07903ff
Allow encoding of int as map key to avoid forcing convertion to binar…
Jun 29, 2017
72bb9b7
fix tests
Jun 29, 2017
ecc54c3
Fix code style and documentation.
Nov 11, 2017
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4 changes: 3 additions & 1 deletion README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -95,10 +95,12 @@ Data Format
[true, 1.0] -> [true, 1.0] -> [true, 1.0]
{[]} -> {} -> {[]}
{[{foo, bar}]} -> {"foo": "bar"} -> {[{<<"foo">>, <<"bar">>}]}
{[{123, bar}]} -> {"123": "bar"} -> {[{<<"123">>, <<"bar">>}]}
{[{<<"foo">>, <<"bar">>}]} -> {"foo": "bar"} -> {[{<<"foo">>, <<"bar">>}]}
#{<<"foo">> => <<"bar">>} -> {"foo": "bar"} -> #{<<"foo">> => <<"bar">>}
#{123 => <<"bar">>} -> {"123": "bar"} -> #{<<"123">> => <<"bar">>}

N.B. The last entry in this table is only valid for VM's that support
N.B. The last two entries in this table are only valid for VM's that support
the `maps` data type (i.e., 17.0 and newer) and client code must pass
the `return_maps` option to `jiffy:decode/2`.

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21 changes: 18 additions & 3 deletions c_src/encoder.c
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Original file line number Diff line number Diff line change
Expand Up @@ -814,9 +814,24 @@ encode_iter(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
ret = enc_obj_error(e, "invalid_object_member_arity", item);
goto done;
}
if(!enc_string(e, tuple[0])) {
ret = enc_obj_error(e, "invalid_object_member_key", tuple[0]);
goto done;
if(enif_get_int64(env, tuple[0], &lval)) {
if (!enc_char(e, '"')) {
ret = enc_error(e, "internal_error");
goto done;
}
if(!enc_long(e, lval)) {
ret = enc_obj_error(e, "invalid_object_member_key", tuple[0]);
goto done;
}
if (!enc_char(e, '"')) {
ret = enc_error(e, "internal_error");
goto done;
}
} else {
if(!enc_string(e, tuple[0])) {
ret = enc_obj_error(e, "invalid_object_member_key", tuple[0]);
goto done;
}
}
if(!enc_colon(e)) {
ret = enc_error(e, "internal_error");
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13 changes: 12 additions & 1 deletion test/jiffy_07_compound_tests.erl
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Expand Up @@ -9,7 +9,8 @@


compound_success_test_() ->
[gen(ok, Case) || Case <- cases(ok)].
[gen(ok, Case) || Case <- cases(ok)] ++
[gen(special_encoding, Case) || Case <- cases(special_encoding)].


compound_failure_test_() ->
Expand All @@ -24,6 +25,11 @@ gen(ok, {J1, E, J2}) ->
{"Encode", ?_assertEqual(J2, enc(E))}
]};

gen(special_encoding, {J, E}) ->
{msg("~s", [J]), [
{"Encode", ?_assertEqual(J, enc(E))}
]};

gen(error, J) ->
{msg("Error: ~s", [J]), [
?_assertThrow({error, _}, dec(J))
Expand Down Expand Up @@ -53,6 +59,11 @@ cases(ok) ->
}
];

cases(special_encoding) ->
[
{<<"{\"123\":\"foo\"}">>, {[{123, <<"foo">>}]}}
];

cases(error) ->
[
<<"[{}">>,
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3 changes: 0 additions & 3 deletions test/jiffy_12_error_tests.erl
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Expand Up @@ -71,13 +71,10 @@ enc_invalid_object_member_key_test_() ->
E1 = {1, true},
{"invalid_object_member_key", [
{"Bad string", enc_error(Type, <<143>>, {[{<<143>>, true}]})},
{"Basic", enc_error(Type, 1, {[{1, true}]})},
{"Basic", enc_error(Type, [1], {[{[1], true}]})},
{"Basic", enc_error(Type, {[{foo,bar}]}, {[{{[{foo,bar}]}, true}]})},
{"Second", enc_error(Type, 1, {[{bar, baz}, E1]})},
{"Nested", enc_error(Type, 1, {[{bar,{[E1]}}]})},
{"Nested", enc_error(Type, 1, {[{bar,{[{baz, 1}, E1]}}]})},
{"In List", enc_error(Type, 1, [{[E1]}])},
{"In List", enc_error(Type, 1, [{[{bang, true}, E1]}])}
]}.

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