Macro dtt::is_valid

macro_rules! is_valid {
    ( $name:ident, $type:ty ) => { ... };
}

Macro for validating a string input against a regex.

This macro generates a function that takes a string as input and returns a boolean.

It takes two arguments:

• $name: The name of the function to be generated.
• $type: The type of the input to be validated.

The function returns true if the input can be parsed into the given type, and false otherwise.

The macro can be used to validate multiple types of DateTime methods such as:

Macro	Description
is_valid!(day, u32)	Validates that a day is valid.
is_valid!(hour, u32)	Validates that an hour is valid.
is_valid!(minute, u32)	Validates that a minute is valid.
is_valid!(month, u32)	Validates that a month is valid.
is_valid!(second, u32)	Validates that a second is valid.
is_valid_time!(time, u32)	Validates that a time is valid.
is_valid_iso_8601!(iso_8601, u32)	Validates that a iso_8601 is valid.

Examples

use dtt::is_valid;
use dtt::DateTime;

// Validation of a day
let input = "31".to_string();
is_valid!(day, String);
let result = day(&input);
assert!(result);

// Validation of an hour
let input = "23".to_string();
is_valid!(hour, String);
let result = hour(&input);
assert!(result);


// Validation of a minute
let input = "59".to_string();
is_valid!(minute, String);
let result = minute(&input);
assert!(result);

// Validation of a month
let input = "12".to_string();
is_valid!(month, String);
let result = month(&input);
assert!(result);

// Validation of a second
let input = "59".to_string();
is_valid!(second, String);
let result = second(&input);
assert!(result);

// Validation of a microsecond
let input = "999999".to_string();
is_valid!(microsecond, String);
let result = microsecond(&input);
assert!(result);

// Validation of an ordinal
let input = "365".to_string();
is_valid!(ordinal, String);
let result = ordinal(&input);
assert!(result);

// Validation of a time
let input = "23:59:59".to_string();
is_valid!(time, String);
let result = time(&input);
assert!(result);

// Validation of an iso_8601
let input = "2022-01-01T12:00:00+01:00".to_string();
is_valid!(iso_8601, String);
let result = iso_8601(&input);