picori 0.1.0

Picori is a library for decompilation, modding, and rom-hacking with focus on GameCube and Wii games.
Documentation 
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use std::io::{Seek, SeekFrom};
use std::panic::Location;

use crate::{Error, Result};

/// A helper trait for types that can seek.
pub trait Seeker {
    /// Seek to the given position.
    #[track_caller]
    fn goto(&mut self, pos: u64) -> Result<u64> { self.goto_tracked(pos, Location::caller()) }

    /// Seek to the given position.
    fn goto_tracked(&mut self, pos: u64, caller: &'static Location) -> Result<u64>;

    /// Get the current position.
    #[track_caller]
    fn position(&mut self) -> Result<u64> { self.position_tracked(Location::caller()) }

    /// Get the current position.
    fn position_tracked(&mut self, caller: &'static Location) -> Result<u64>;
}

/// Implementation of [`Seeker`] for all [`std::io::Seek`].
impl<Base> Seeker for Base
where
    Base: Seek + Sized,
{
    #[inline]
    fn goto_tracked(&mut self, pos: u64, caller: &'static Location) -> Result<u64> {
        match self.seek(SeekFrom::Start(pos)) {
            Ok(_) => Ok(pos),
            Err(e) => Err(Error::SeekFailed(e, caller)),
        }
    }

    #[inline]
    fn position_tracked(&mut self, caller: &'static Location) -> Result<u64> {
        match self.stream_position() {
            Ok(pos) => Ok(pos),
            Err(e) => Err(Error::SeekFailed(e, caller)),
        }
    }
}