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Added optional sign to all number syntaxes

This commit is contained in:
Sera Brocious 2021-04-12 02:02:55 -04:00
parent 44c295358e
commit defbd80412
1 changed files with 5 additions and 5 deletions
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SPEC.md
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@ -221,13 +221,13 @@ numbers.
There are four syntaxes for Numbers: Decimal, Hexadecimal, Octal, and Binary.
* All numbers may optionally start with one of `-` or `+`, which determine whether they'll be positive or negative.
* Binary numbers start with `0b` and only allow `0` and `1` as digits, which may be separated by `_`. They represent numbers in radix 2.
* Octal numbers start with `0o` and only allow digits between `0` and `7`, which may be separated by `_`. They represent numbers in radix 8.
* Hexadecimal numbers start with `0x` and allow digits between `0` and `9`, as well as letters `A` through `F`, in either lower or upper case, which may be separated by `_`. They represent numbers in radix 16.
* Decimal numbers are a bit more special:
* They may optionally start with one of `-` or `+`, which determine whether they'll be positive or negative.
* They have no radix prefix.
* They use digits `0` through `9`.
* They use digits `0` through `9`, which may be separated by `_`.
* They may optionally include a decimal separator `.`, followed by more digits.
* They may optionally be followed by `E` or `e`, an optional `-` or `+`, and more digits, to represent an exponent value.
@ -333,9 +333,9 @@ exponent := ('e' | 'E') integer
integer := sign? [0-9] [0-9_]*
sign := '+' | '-'
hex := '0x' hex-digit (hex-digit | '_')*
octal := '0o' [0-7] [0-7_]*
binary := '0b' ('0' | '1') ('0' | '1' | '_')*
hex := sign? '0x' hex-digit (hex-digit | '_')*
octal := sign? '0o' [0-7] [0-7_]*
binary := sign? '0b' ('0' | '1') ('0' | '1' | '_')*
boolean := 'true' | 'false'