use std::io;
use crate::pci::PciBdf;
#[derive(thiserror::Error, Debug)]
pub enum Error {
#[error("io issue encountered: {0}")]
Io(#[from] io::Error),
#[error("xenstore issue encountered: {0}")]
XenStore(#[from] xenstore::error::Error),
#[error("xencall issue encountered: {0}")]
XenCall(#[from] xencall::error::Error),
#[error("domain does not have a tty")]
TtyNotFound,
#[error("introducing the domain failed")]
IntroduceDomainFailed,
#[error("string conversion of a path failed")]
PathStringConversion,
#[error("parent of path not found")]
PathParentNotFound,
#[error("domain does not exist")]
DomainNonExistent,
#[error("memory setup failed: {0}")]
MemorySetupFailed(&'static str),
#[error("populate physmap failed: wanted={0}, received={1}, input_extents={2}")]
PopulatePhysmapFailed(usize, usize, usize),
#[error("unknown elf compression method")]
ElfCompressionUnknown,
#[error("expected elf image format not found")]
ElfInvalidImage,
#[error("provided elf image does not contain xen support")]
ElfXenSupportMissing,
#[error("regex error: {0}")]
RegexError(#[from] regex::Error),
#[error("error: {0}")]
GenericError(String),
#[error("parameter missing: {0}")]
ParameterMissing(&'static str),
#[error("failed to parse int: {0}")]
ParseIntError(#[from] std::num::ParseIntError),
#[error("invalid pci bdf string")]
InvalidPciBdfString,
#[error("pci device {0} is not assignable")]
PciDeviceNotAssignable(PciBdf),
#[error("xen platform error: {0}")]
XenPlatform(#[from] xenplatform::error::Error),
#[error("invalid block index")]
InvalidBlockIdx,
#[error("device state wait error: {0}")]
DevStateWaitError(String),
#[error("device ids exhausted")]
DevIdExhausted,
}
pub type Result<T> = std::result::Result<T, Error>;