std.json: Add support for recursive objects to std.json.parse (#9307)

* Add support for recursive objects to std.json.parse

* Remove previously defined error set

* Try with function which returns an error set

* Don't analyze already inferred types

* Add comptime to inferred_type parameter

* Make ParseInternalError to accept only a single argument

* Add public `ParseError` for `parse` function

* Use error.Foo syntax for errors instead of a named error set

* Better formatting

* Update to latest code changes

1 files changed, 3 insertions, 1 deletions

diff --git a/lib/std/fmt/parse_float.zig b/lib/std/fmt/parse_float.zig
index 6178398b17..ed6224b4b9 100644
--- a/lib/std/fmt/parse_float.zig
+++ b/lib/std/fmt/parse_float.zig
@@ -349,7 +349,9 @@ fn caseInEql(a: []const u8, b: []const u8) bool {
     return true;
 }
 
-pub fn parseFloat(comptime T: type, s: []const u8) !T {
+pub const ParseFloatError = error{InvalidCharacter};
+
+pub fn parseFloat(comptime T: type, s: []const u8) ParseFloatError!T {
     if (s.len == 0 or (s.len == 1 and (s[0] == '+' or s[0] == '-'))) {
         return error.InvalidCharacter;
     }