Function parse

pub fn parse(integer: &str) -> Result<i64, ParseEndfIntegerError>

Parse ENDF integer.

Format

ENDF integers can be read with FORTRAN77 I11 format specification.

ENDF integers have the following format: ±nnnnnnnnnn with:

• zero or more leading blanks followed by
• a leading sign '-' or '+' for negative or positive respectively (positive sign is optional)
• n a digit between 0 and 9
• full integer length is less than or equal to 11

Preconditions

Following preconditions must hold or a ParseEndfIntegerError is returned:

• integer is ASCII
• integer is not empty
• integer is not blank (combination of chars: ' ', '\t', '\n' and '\r')
• integer is included in [ -9_999_999_999; +9_999_999_999 ]
• integer length is less than or equal to 11
• integer respect the ENDF integer format (see Format)

Examples

From &str

let x = endf_parser::primitive::integer::parse("1");
assert_eq!(1, x.unwrap());

let x = endf_parser::primitive::integer::parse("-1");
assert_eq!(-1, x.unwrap());

let x = endf_parser::primitive::integer::parse("+1");
assert_eq!(1, x.unwrap());

let x = endf_parser::primitive::integer::parse("+1234567890");
assert_eq!(1_234_567_890, x.unwrap());

From String

let x = endf_parser::primitive::integer::parse(&String::from("+1234567890")[..]);
assert_eq!(1_234_567_890, x.unwrap())

Errors

If parsing fails, ParseEndfIntegerError is returned.

Regex

The input integer can be tested with the ENDF_INTEGER_REGEX regex.

Reference

ENDF integer format is described in section 0.6.2 of ENDF-6 Formats Manual