Squashed 'third_party/flatbuffers/' changes from bc44fad35..8aa8b9139

8aa8b9139 Fix handling of +/-inf defaults in TS/rust/go/dart codegen (#7588)
001adf782 Add support for parsing proto map fields (#7613)
dbc58ab77 Fix help output for --gen-includes (#7611)
2facfeec7 Fix missing spaces in flatc help text (#7612)
4de2814c7 Fix: arduino platform build (#7625)
37b1acdaf Fix current official name of macOS (#7627)
a22434e2a Add missing #include <algorithm> for std::min/std::max uses, and #include <limits> for std::numeric_limits<> (#7624)
214cc9468 Bump Rust version to 22.10.26 before publication (#7622)
a4ff275d9 Added option to not requires an EoF token when parsing JSON (#7620)
15f32c690 python: object generation prefix and suffix (#7565)
051afd882 Add CreateSharedString to python builder (#7608)
728c033ad Add check for presence of realpath to CMakeLists.txt to support more platforms (#7603)
4c514483d Update DartTest.sh golden files (#7606)
c2d9c2080 [TS] Add support for fixed length arrays on Typescript (#5864) (#7021) (#7581)
e34ae4c6b `build.yml`: Fix missing 'v' in version
e54536127 `build.yml` Update to Kotlin Wrapper 1.0.5
49d9f941c `release.yml` Use env var for passphrase
cefc21c1f `release.yml` Add GPG key for Maven
3e64fa724 `release.yml`: Add Maven Steps
b15f3c57e `release_yml` Use new dotnet version
ff802c680 `release.yml` Use NuGet Key directly
b401957d5 `release.yml` Changed Push to follow examples
8c8151f8f `release.yml` Fix nuget push command
ebb7c203d `release.yml` Add Nuget support
203241ed3 FlatBuffers Version 22.10.26 (#7607)
ac485609c `setup.py`: Define version directly
de5b85aa6 `release.yml`: Switch to `python` directory
de3df2d88 `release.yml`: Add publishing to PyPi
043a24f2e [Python] Fixed the issue with nested unions relying on InitFromBuf. (#7576)
5a48b0d7d release.yml: Typo
ce307556f release.yml: Remove `npm ci`
cb616e27c Create release.yml (#7605)
a54ca1e75 FlatBuffers Version 22.10.25 (#7604)
5b3fadcc1 [vector] Allow to iterate with mutables (#7586)
872a49746 [Nim] Bfbs Nim Generator (#7534)
e30170296 Make type conversions explicit. (#7595)
f7b734438 Fix LongEnum definitions (#7596)
5792623df Rust fix compilation for no_std targets #2 (#7553)
0edb27528 Update Rust version (#7574)
acc6a20d3 tests/test.cpp contains a couple of tests that are only executed (#7571)
04cd037ba Fix #7580 by documenting union schema evolution rules (#7585)
e1c5db988 Turn on clippy for Rust and fix lints for non-generated code (#7575)
b80142b90 Update documentation to mention enum value attributes (#7570)
54418f371 Add support for metadata attributes for enum values (#7567) (#7568)
c92e78a9f FlatBuffers Version 22.9.29 (#7557)
d243b904c [TS] Make strict compliant and improve typings (#7549)
374f8fb5f Rust soundness fixes (#7518)
dadbff571 Moves swift package to root of repository so it can be used directly … (#7548)
76ddae006 FlatBuffers Version 22.9.24 (#7547)
cfe157ec5 Emit internal enums when swift_implementation_only (#7545)
413115858 [Python] Python fixed size array (#7529)
88046190e Upgrade grpc to 1.49.0 and make sure it builds (#7538)
72aa85a75 [C++] Rare bad buffer content alignment if sizeof(T) != alignof(T) (#7520)
bfceebb7f Fix conform (#7532)

git-subtree-dir: third_party/flatbuffers
git-subtree-split: 8aa8b9139eb330f27816a5b8b5bbef402fbe3632
Signed-off-by: James Kuszmaul <james.kuszmaul@bluerivertech.com>
Change-Id: I943faba499baf58e9f561b1e4734922188ba8626
diff --git a/src/idl_gen_go.cpp b/src/idl_gen_go.cpp
index 51e018a..33917ff 100644
--- a/src/idl_gen_go.cpp
+++ b/src/idl_gen_go.cpp
@@ -16,6 +16,8 @@
 
 // independent from idl_parser, since this code is not needed for most clients
 
+#include <algorithm>
+#include <cmath>
 #include <sstream>
 #include <string>
 
@@ -101,6 +103,7 @@
     for (auto it = parser_.enums_.vec.begin(); it != parser_.enums_.vec.end();
          ++it) {
       tracked_imported_namespaces_.clear();
+      needs_math_import_ = false;
       needs_imports = false;
       std::string enumcode;
       GenEnum(**it, &enumcode);
@@ -120,6 +123,7 @@
     for (auto it = parser_.structs_.vec.begin();
          it != parser_.structs_.vec.end(); ++it) {
       tracked_imported_namespaces_.clear();
+      needs_math_import_ = false;
       std::string declcode;
       GenStruct(**it, &declcode);
       if (parser_.opts.one_file) {
@@ -153,6 +157,7 @@
     }
   };
   std::set<const Namespace *, NamespacePtrLess> tracked_imported_namespaces_;
+  bool needs_math_import_ = false;
 
   // Most field accessors need to retrieve and test the field offset first,
   // this is the prefix code for that.
@@ -1276,6 +1281,23 @@
     switch (field.value.type.base_type) {
       case BASE_TYPE_BOOL:
         return field.value.constant == "0" ? "false" : "true";
+      case BASE_TYPE_FLOAT:
+      case BASE_TYPE_DOUBLE: {
+        const std::string float_type =
+            field.value.type.base_type == BASE_TYPE_FLOAT ? "float32"
+                                                          : "float64";
+        if (StringIsFlatbufferNan(field.value.constant)) {
+          needs_math_import_ = true;
+          return float_type + "(math.NaN())";
+        } else if (StringIsFlatbufferPositiveInfinity(field.value.constant)) {
+          needs_math_import_ = true;
+          return float_type + "(math.Inf(1))";
+        } else if (StringIsFlatbufferNegativeInfinity(field.value.constant)) {
+          needs_math_import_ = true;
+          return float_type + "(math.Inf(-1))";
+        }
+        return field.value.constant;
+      }
       default: return field.value.constant;
     }
   }
@@ -1329,6 +1351,8 @@
     if (needs_imports) {
       code += "import (\n";
       if (is_enum) { code += "\t\"strconv\"\n\n"; }
+      // math is needed to support non-finite scalar default values.
+      if (needs_math_import_) { code += "\t\"math\"\n\n"; }
       if (!parser_.opts.go_import.empty()) {
         code += "\tflatbuffers \"" + parser_.opts.go_import + "\"\n";
       } else {
@@ -1345,6 +1369,10 @@
       code += ")\n\n";
     } else {
       if (is_enum) { code += "import \"strconv\"\n\n"; }
+      if (needs_math_import_) {
+        // math is needed to support non-finite scalar default values.
+        code += "import \"math\"\n\n";
+      }
     }
   }