116 lines
2.8 KiB
Rust
116 lines
2.8 KiB
Rust
use crate::{
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containers::ByteSlice,
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macros::{wrap_clone, wrap_free, wrap_method},
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mem::{heap_move_nonnull, heap_move_ok, heap_move_some, heap_remove},
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};
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use servicepoint::{
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Cp437Grid, Cp437GridCommand, DataRef, Grid, Origin, Packet,
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};
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use std::ptr::NonNull;
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/// Creates a new [Cp437Grid] with the specified dimensions.
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///
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/// returns: [Cp437Grid] initialized to 0.
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#[no_mangle]
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pub unsafe extern "C" fn sp_cp437_grid_new(
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width: usize,
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height: usize,
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) -> NonNull<Cp437Grid> {
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heap_move_nonnull(Cp437Grid::new(width, height))
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}
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/// Loads a [Cp437Grid] with the specified dimensions from the provided data.
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#[no_mangle]
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pub unsafe extern "C" fn sp_cp437_grid_load(
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width: usize,
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height: usize,
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data: ByteSlice,
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) -> *mut Cp437Grid {
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let data = unsafe { data.as_slice() };
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heap_move_some(Cp437Grid::load(width, height, data))
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}
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wrap_clone!(sp_cp437_grid::Cp437Grid);
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wrap_free!(sp_cp437_grid::Cp437Grid);
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wrap_method!(
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sp_cp437_grid::Cp437Grid;
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/// Gets the current value at the specified position.
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///
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/// # Arguments
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///
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/// - `x` and `y`: position of the cell to read
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///
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/// # Panics
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///
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/// - when accessing `x` or `y` out of bounds
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ref fn get(x: usize, y: usize) -> u8;
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);
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wrap_method!(
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sp_cp437_grid::Cp437Grid;
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/// Sets the value at the specified position.
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///
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/// # Arguments
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///
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/// - `x` and `y`: position of the cell
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/// - `value`: the value to write to the cell
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///
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/// returns: old value of the cell
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///
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/// # Panics
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///
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/// - when accessing `x` or `y` out of bounds
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mut fn set(x: usize, y: usize, value: u8);
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);
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wrap_method!(
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sp_cp437_grid::Cp437Grid;
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/// Sets the value of all cells in the grid.
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///
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/// # Arguments
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///
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/// - `cp437_grid`: instance to write to
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/// - `value`: the value to set all cells to
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mut fn fill(value: u8);
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);
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wrap_method!(
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sp_cp437_grid::Cp437Grid;
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/// Gets the width of the grid.
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ref fn width() -> usize;
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);
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wrap_method!(
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sp_cp437_grid::Cp437Grid;
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/// Gets the height of the grid.
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ref fn height() -> usize;
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);
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wrap_method!(
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sp_cp437_grid::Cp437Grid;
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/// Gets an unsafe reference to the data of the grid.
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///
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/// The returned memory is valid for the lifetime of the instance.
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mut fn data_ref_mut() -> ByteSlice;
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| slice | unsafe { ByteSlice::from_slice(slice) };
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);
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/// Creates a [Cp437GridCommand] and immediately turns that into a [Packet].
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///
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/// The provided [Cp437Grid] gets consumed.
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///
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/// Returns NULL in case of an error.
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#[no_mangle]
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pub unsafe extern "C" fn sp_cp437_grid_into_packet(
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grid: NonNull<Cp437Grid>,
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x: usize,
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y: usize,
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) -> *mut Packet {
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let grid = unsafe { heap_remove(grid) };
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heap_move_ok(Packet::try_from(Cp437GridCommand {
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grid,
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origin: Origin::new(x, y),
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}))
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}
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