62 lines
1.7 KiB
Rust
62 lines
1.7 KiB
Rust
use crate::{
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containers::{wrap_grid, ByteSlice},
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macros::{derive_clone, derive_free, wrap_functions, wrap_methods},
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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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wrap_grid!(Cp437Grid, u8);
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wrap_functions!(cp437grid;
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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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fn 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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fn 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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/// 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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fn try_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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);
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wrap_methods!(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(instance) -> ByteSlice {
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unsafe { ByteSlice::from_slice(instance.data_ref_mut()) }
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};
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);
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