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use crate::structures::terminal::{Terminal, TerminalWriteFn};
#[repr(C)]
#[derive(Debug)]
/// Response to [`TerminalRequest`]
pub struct TerminalResponse {
/// The response revision number
pub revision: u64,
/// The number of [Terminal]s in `terminals`
pub terminal_count: u64,
/// A pointer to an array of [Terminal] pointers
pub terminals: *const *const Terminal,
/// The terminal write function
///
/// # Important
/// It must be noted that this is the physical address of the write function
pub write: TerminalWriteFn,
}
impl TerminalResponse {
/// Get the terminal slice
///
/// # Safety
/// The pointer must point to a valid array of [Terminal]s
#[must_use]
pub unsafe fn get_terminals(&self) -> Option<&[&Terminal]> {
if self.terminals.is_null() {
return None;
}
Some(core::slice::from_raw_parts(
self.terminals.cast::<&Terminal>(),
self.terminal_count.try_into().ok()?,
))
}
/// Get the terminal slice
///
/// # Safety
/// The pointer must point to a valid array of [Terminal]s.
/// Additionally, you must ensure that this is called *nowhere* else, otherwise
/// very, very bad things may occur due to read and write tearing
#[must_use]
pub unsafe fn get_terminals_mut(&self) -> Option<&mut [&mut Terminal]> {
if self.terminals.is_null() {
return None;
}
Some(core::slice::from_raw_parts_mut(
self.terminals as *mut &mut Terminal,
self.terminal_count.try_into().ok()?,
))
}
}