Struct MonthGrid 

pub struct MonthGrid {
    pub year: i32,
    pub month: u32,
    pub days: u32,
    pub first_weekday: u32,
    pub grid: [[Option<u32>; 7]; 6],
}

A 6×7 grid representing a single Shahanshahi calendar month.

Rows are weeks, columns are weekdays starting from Saturday (column 0) through Friday (column 6), following the Iranian week convention. Each cell is None for empty positions or Some(day) for a valid day.

Fields

year: i32

Shahanshahi year (e.g. 2584).

month: u32

Persian month (1–12).

days: u32

Total number of days in this month.

first_weekday: u32

Weekday index of the 1st day (0=Saturday, 6=Friday).

grid: [[Option<u32>; 7]; 6]

The grid: 6 rows × 7 columns. None = empty cell, Some(day) = day number.

Implementations

impl MonthGrid

pub fn new(year: i32, month: u32) -> Self

Build a new month grid for the given Shahanshahi year and month.

pub fn row_count(&self) -> usize

Number of rows actually used in the grid (between 4 and 6).

pub fn day_of_year(&self, day: u32) -> u32

Get day-of-year (1–366) for a given day in this month.