72 lines
2.1 KiB
Rust
72 lines
2.1 KiB
Rust
// (c) 2023 John A. Breaux
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// This code is licensed under MIT license (see LICENSE.txt for details)
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//! Error type for Chirp
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use std::ops::Range;
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use crate::bus::Region;
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use thiserror::Error;
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/// Result type, equivalent to [std::result::Result]<T, [enum@Error]>
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pub type Result<T> = std::result::Result<T, Error>;
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/// Error type for Chirp.
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#[derive(Debug, Error)]
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pub enum Error {
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/// Represents a breakpoint being hit
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#[error("Breakpoint hit: {addr:03x} ({next:04x})")]
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BreakpointHit {
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/// The address of the breakpoint
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addr: u16,
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/// The instruction after the breakpoint
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next: u16,
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},
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/// Represents an unimplemented operation
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#[error("Unrecognized opcode: {word:04x}")]
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UnimplementedInstruction {
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/// The offending word
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word: u16,
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},
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/// The region you asked for was not defined
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#[error("No {region} found on bus")]
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MissingRegion {
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/// The offending [Region]
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region: Region,
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},
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/// Tried to fetch [Range] from bus, received nothing
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#[error("Invalid range {range:04x?} for bus")]
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InvalidBusRange {
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/// The offending [Range]
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range: Range<usize>,
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},
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/// Tried to press a key that doesn't exist
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#[error("Invalid key: {key:X}")]
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InvalidKey {
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/// The offending key
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key: usize,
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},
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/// Tried to get/set an out-of-bounds register
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#[error("Invalid register: v{reg:X}")]
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InvalidRegister {
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/// The offending register
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reg: usize,
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},
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/// Tried to convert string into mode, but it did not match.
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#[error("Invalid mode: {mode}")]
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InvalidMode {
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/// The string which failed to become a mode
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mode: String,
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},
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/// Error originated in [std::io]
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#[error(transparent)]
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IoError(#[from] std::io::Error),
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/// Error originated in [std::array::TryFromSliceError]
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#[error(transparent)]
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TryFromSliceError(#[from] std::array::TryFromSliceError),
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#[cfg(feature = "minifb")]
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/// Error originated in [minifb]
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#[error(transparent)]
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MinifbError(#[from] minifb::Error),
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}
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