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feat: Export infinity and NaN values in JSON #889

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merged 1 commit into from
May 5, 2021

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aababilov
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@aababilov aababilov commented May 5, 2021

Some notices may have special double values (NaN, Infinity, -Infinity)
in the context. If we do not allow their serialization, then an attempt
to store validation results ends up with a runtime exception.

Documentation for GSON library says the following.

Section 2.4 of JSON specification disallows
special double values (NaN, Infinity, -Infinity). However,
Javascript
specification
(see section 4.3.20, 4.3.22, 4.3.23) allows these values as valid Javascript
values. Moreover, most JavaScript engines will accept these special values in JSON without
problem. So, at a practical level, it makes sense to accept these values as valid JSON even
though JSON specification disallows them.

Some notices may have special double values (NaN, Infinity, -Infinity)
in the context. If we do not allow their serialization, then an attempt
to store validation results ends up with a runtime exception.

Documentation for GSON library says the following.

Section 2.4 of <a href="http://www.ietf.org/rfc/rfc4627.txt">JSON specification</a> disallows
special double values (NaN, Infinity, -Infinity). However,
<a href="http://www.ecma-international.org/publications/files/ECMA-ST/Ecma-262.pdf">Javascript
specification</a> (see section 4.3.20, 4.3.22, 4.3.23) allows these values as valid Javascript
values. Moreover, most JavaScript engines will accept these special values in JSON without
problem. So, at a practical level, it makes sense to accept these values as valid JSON even
though JSON specification disallows them.
@aababilov aababilov requested review from lionel-nj and barbeau May 5, 2021 19:16
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@lionel-nj lionel-nj left a comment

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Thanks @aababilov that will certainly have a positive impact on #848 where we deserialize the validation reports.

@lionel-nj lionel-nj merged commit 006fe9b into MobilityData:master May 5, 2021
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