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Let's start with this perl at https://www.json.org/json-en.html: A number is very much like a C or Java number, except that the octal and hexadecimal formats are not used. That's an extremely imp...
Answer
#2: Post edited
by
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2020-08-22T17:38:37Z (over 4 years ago)
purge double 'signed' word
- Let's start with this perl at https://www.json.org/json-en.html:
- > A number is very much like a C or Java number, except that the octal and hexadecimal formats are not used.
That's an extremely imprecise sentence. There are no _numbers_ in C or Java. C provides `signed` and `unsigned` `short`, `int`, `long`, `long long` numeric types, and thin character types which allow some arithmetic. Java provides signed `byte`, `short`, `int` and `long` signed numeric types, wrapping classes, and a `Number` superclass.That clarified, you should stick to strings for the sake of security. That decreases the probabilities of overflowing the parser. Instead of having developers using a maybe _happy times_ parser which may possibly believe that the number will fit default numeric types, have developers retrieve a number encapsulated in a string, with no doubt the parser isn't overflowing, and then let they explicitly choose between:- * Make the wrong assumption that the number will fit the numeric type.
- * Asserting that the number fits, and fail to assert if it does not.
- * Feeding the number to a big integers parser, provided by some third party library (or your code), in the case of C; or provided by the language, in the case of Java.
- Let's start with this perl at https://www.json.org/json-en.html:
- > A number is very much like a C or Java number, except that the octal and hexadecimal formats are not used.
- That's an extremely imprecise sentence. There are no _numbers_ in C or Java. C provides `signed` and `unsigned` `short`, `int`, `long`, `long long` numeric types, and thin character types which allow some arithmetic. Java provides signed `byte`, `short`, `int` and `long` numeric types, their wrapping classes counterparts, and a `Number` superclass.
- That clarified, you should stick to strings for the sake of security. That decreases the probabilities of overflowing the parser. Instead of having developers using a maybe _happy times_ parser which may possibly believe (wrongly (or at least eventually wrongly)) that the number will fit default numeric types, have developers retrieve a number encapsulated in a string, with no doubt the parser isn't overflowing, and then let they explicitly choose between:
- * Make the wrong assumption that the number will fit the numeric type.
- * Asserting that the number fits, and fail to assert if it does not.
- * Feeding the number to a big integers parser, provided by some third party library (or your code), in the case of C; or provided by the language, in the case of Java.
#1: Initial revision
by
. .
·
2020-08-22T17:26:41Z (over 4 years ago)
Let's start with this perl at https://www.json.org/json-en.html: > A number is very much like a C or Java number, except that the octal and hexadecimal formats are not used. That's an extremely imprecise sentence. There are no _numbers_ in C or Java. C provides `signed` and `unsigned` `short`, `int`, `long`, `long long` numeric types, and thin character types which allow some arithmetic. Java provides signed `byte`, `short`, `int` and `long` signed numeric types, wrapping classes, and a `Number` superclass. That clarified, you should stick to strings for the sake of security. That decreases the probabilities of overflowing the parser. Instead of having developers using a maybe _happy times_ parser which may possibly believe that the number will fit default numeric types, have developers retrieve a number encapsulated in a string, with no doubt the parser isn't overflowing, and then let they explicitly choose between: * Make the wrong assumption that the number will fit the numeric type. * Asserting that the number fits, and fail to assert if it does not. * Feeding the number to a big integers parser, provided by some third party library (or your code), in the case of C; or provided by the language, in the case of Java.