Fair play with JSON

README.md

@@ -200,8 +200,16 @@ Testing base64 encoding/decoding of the large blob into the newly allocated buff
 
 Testing parsing and simple calculating of values from a big JSON file.
 
-NOTE: D implementations except Mir-based (like Ion and Asdf) have
-[inaccurate number parsing](https://issues.dlang.org/show_bug.cgi?id=20967).
+NOTE: DAW JSON Link, gason, 'fast', and D implementations except Mir-based (Ion and Asdf)
+have inaccurate IEEE incompatible number parsing.
+ - [DAW JSON Link's number parsing code](https://github.com/beached/daw_json_link/blob/v2.9.2/include/daw/json/impl/daw_json_parse_real.h), 
+ - [gason's number parsing code](https://github.com/vivkin/gason/blob/v1.0.0/src/gason.cpp#L73)
+ - ['fast' number parsing code](https://github.com/mleise/fast/blob/v0.3.5/source/fast/parsing.d#L130)
+ - [D stdlib number parsing issue](https://issues.dlang.org/show_bug.cgi?id=20967)
+
+NOTE: gason mutates input strings.
+
+NOTE: simdjson and 'fast' (D) require input strings with batch of trailing zeros: a special zero padding for SIMD instructions.
 
 [Json](json)
 
@@ -215,8 +223,8 @@ NOTE: D implementations except Mir-based (like Ion and Asdf) have
 |          C++/g++ (simdjson DOM) |  0.148<sub>±0.004</sub> |   109.88<sub>±00.04</sub> + 176.60<sub>±00.00</sub> |   3.69<sub>±00.23</sub> |
 |                 C++/g++ (gason) |  0.159<sub>±0.001</sub> |    109.21<sub>±00.01</sub> + 97.17<sub>±00.03</sub> |   3.02<sub>±00.09</sub> |
 |             C++/g++ (RapidJSON) |  0.221<sub>±0.006</sub> |   109.24<sub>±00.01</sub> + 128.82<sub>±00.00</sub> |   4.56<sub>±00.48</sub> |
-|       D/ldc2 (Mir Amazon's Ion) |  0.231<sub>±0.003</sub> |    109.38<sub>±00.07</sub> + 16.11<sub>±00.01</sub> |   4.86<sub>±00.12</sub> |
-|               D/ldc2 (Mir Asdf) |  0.238<sub>±0.005</sub> |    109.45<sub>±00.04</sub> + 57.83<sub>±00.00</sub> |   4.92<sub>±00.27</sub> |
+|   D/ldc2 (Mir Amazon's Ion DOM) |  0.231<sub>±0.003</sub> |    109.38<sub>±00.07</sub> + 16.11<sub>±00.01</sub> |   4.86<sub>±00.12</sub> |
+|           D/ldc2 (Mir Asdf DOM) |  0.238<sub>±0.005</sub> |    109.45<sub>±00.04</sub> + 57.83<sub>±00.00</sub> |   4.92<sub>±00.27</sub> |
 |            C++/g++ (Boost.JSON) |  0.498<sub>±0.009</sub> |   109.81<sub>±00.03</sub> + 435.70<sub>±00.00</sub> |  10.00<sub>±00.67</sub> |
 |                            Java |  0.508<sub>±0.007</sub> |    253.80<sub>±00.21</sub> + 70.03<sub>±01.09</sub> |  13.87<sub>±00.33</sub> |
 |         C++/g++ (RapidJSON SAX) |  0.530<sub>±0.008</sub> |     109.44<sub>±00.02</sub> + 0.00<sub>±00.00</sub> |  11.80<sub>±00.31</sub> |

json/generate_json.rb

@@ -6,8 +6,8 @@
 
 524_288.times do
   h = {
-    'x' => rand,
-    'y' => rand,
+    'x' => rand * -10e-30,
+    'y' => rand * 10e+30,
     'z' => rand,
     'name' => "#{('a'..'z').to_a.sample(6).join} #{rand(10_000)}",
     'opts' => { '1' => [1, true] }

json/test_dawjsonlink.cpp

@@ -92,7 +92,7 @@ coordinate_t calc(const string& text) {
   auto x = 0.0, y = 0.0, z = 0.0;
   auto len = 0;
 
-  using range_t = daw::json::json_array_range<coordinate_t, daw::json::NoCommentSkippingPolicyUnchecked>;
+  using range_t = daw::json::json_array_range<coordinate_t>;
   auto rng = range_t(json_sv, "coordinates");
 
   for (auto c : rng) {

json/test_mir_asdf.d

@@ -18,7 +18,7 @@ void main()
 {
     validate!calc;
     auto text = cast(string) "/tmp/1.json".read;
-    "D/ldc2 (Mir Asdf)".notifyStart;
+    "D/ldc2 (Mir Asdf DOM)".notifyStart;
     auto coordinate = calc(text);
     notifyStop;
     coordinate.print;

json/test_mir_ion.d

@@ -18,7 +18,7 @@ void main()
 {
     validate!calc;
     auto text = cast(string) "/tmp/1.json".read;
-    "D/ldc2 (Mir Amazon's Ion)".notifyStart;
+    "D/ldc2 (Mir Amazon's Ion DOM)".notifyStart;
     auto coordinate = calc(text);
     notifyStop;
     coordinate.print;

json/test_mir_ion_file.d

@@ -10,7 +10,7 @@ import mir.ion.deser.json : deserializeJsonFile;
 
 void main() @safe @nogc
 {
-    "D/ldc2 (Mir Amazon's Ion, file input)".notifyStart;
+    "D/ldc2 (Mir Amazon's Ion DOM, file input)".notifyStart;
     auto coordinate = "/tmp/1.json".deserializeJsonFile!Avg.coordinates.avg;
     notifyStop;
     coordinate.print;

json/test_rapid.cpp

@@ -38,7 +38,7 @@ string read_file(const string& filename) {
 
 coordinate_t calc(const string& text) {
   Document jobj;
-  jobj.Parse(text);
+  jobj.Parse<kParseFullPrecisionFlag>(text);
 
   const Value& coordinates = jobj["coordinates"];
   auto len = coordinates.Size();

json/test_rapid_sax.cpp

@@ -127,7 +127,7 @@ void calc(stringstream& ss, const TCallback& callback) {
   IStreamWrapper isw(ss);
   Reader reader;
   CoordinateHandler handler(callback);
-  reader.Parse(isw, handler);
+  reader.Parse<kParseFullPrecisionFlag>(isw, handler);
 }
 
 int main() {