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use std::{convert::TryFrom, fmt};
use gix_hash::{oid, ObjectId};
use crate::{FullName, FullNameRef, Kind, Target, TargetRef};
impl<'a> TargetRef<'a> {
/// Returns the kind of the target the ref is pointing to.
pub fn kind(&self) -> Kind {
match self {
TargetRef::Symbolic(_) => Kind::Symbolic,
TargetRef::Peeled(_) => Kind::Peeled,
}
}
/// Interpret this target as object id which maybe `None` if it is symbolic.
pub fn try_id(&self) -> Option<&oid> {
match self {
TargetRef::Symbolic(_) => None,
TargetRef::Peeled(oid) => Some(oid),
}
}
/// Interpret this target as object id or **panic** if it is symbolic.
pub fn id(&self) -> &oid {
match self {
TargetRef::Symbolic(_) => panic!("BUG: tries to obtain object id from symbolic target"),
TargetRef::Peeled(oid) => oid,
}
}
/// Interpret this target as name of the reference it points to which maybe `None` if it an object id.
pub fn try_name(&self) -> Option<&FullNameRef> {
match self {
TargetRef::Symbolic(name) => Some(name),
TargetRef::Peeled(_) => None,
}
}
/// Convert this instance into an owned version, without consuming it.
pub fn into_owned(self) -> Target {
self.into()
}
}
impl Target {
/// Returns the kind of the target the ref is pointing to.
pub fn kind(&self) -> Kind {
match self {
Target::Symbolic(_) => Kind::Symbolic,
Target::Peeled(_) => Kind::Peeled,
}
}
/// Return true if this is a peeled target with a null hash
pub fn is_null(&self) -> bool {
match self {
Target::Peeled(oid) => oid.is_null(),
Target::Symbolic(_) => false,
}
}
/// Interpret this owned Target as shared Target
pub fn to_ref(&self) -> TargetRef<'_> {
match self {
Target::Peeled(oid) => TargetRef::Peeled(oid),
Target::Symbolic(name) => TargetRef::Symbolic(name.as_ref()),
}
}
/// Interpret this target as object id which maybe `None` if it is symbolic.
pub fn try_id(&self) -> Option<&oid> {
match self {
Target::Symbolic(_) => None,
Target::Peeled(oid) => Some(oid),
}
}
/// Interpret this target as object id or panic if it is symbolic.
pub fn id(&self) -> &oid {
match self {
Target::Symbolic(_) => panic!("BUG: tries to obtain object id from symbolic target"),
Target::Peeled(oid) => oid,
}
}
/// Return the contained object id or panic
pub fn into_id(self) -> ObjectId {
match self {
Target::Symbolic(_) => panic!("BUG: expected peeled reference target but found symbolic one"),
Target::Peeled(oid) => oid,
}
}
/// Return the contained object id if the target is peeled or itself if it is not.
pub fn try_into_id(self) -> Result<ObjectId, Self> {
match self {
Target::Symbolic(_) => Err(self),
Target::Peeled(oid) => Ok(oid),
}
}
/// Interpret this target as name of the reference it points to which maybe `None` if it an object id.
pub fn try_name(&self) -> Option<&FullNameRef> {
match self {
Target::Symbolic(name) => Some(name.as_ref()),
Target::Peeled(_) => None,
}
}
}
impl<'a> From<TargetRef<'a>> for Target {
fn from(src: TargetRef<'a>) -> Self {
match src {
TargetRef::Peeled(oid) => Target::Peeled(oid.to_owned()),
TargetRef::Symbolic(name) => Target::Symbolic(name.to_owned()),
}
}
}
impl<'a> PartialEq<TargetRef<'a>> for Target {
fn eq(&self, other: &TargetRef<'a>) -> bool {
match (self, other) {
(Target::Peeled(lhs), TargetRef::Peeled(rhs)) => lhs == rhs,
(Target::Symbolic(lhs), TargetRef::Symbolic(rhs)) => lhs.as_bstr() == rhs.as_bstr(),
_ => false,
}
}
}
impl From<ObjectId> for Target {
fn from(id: ObjectId) -> Self {
Target::Peeled(id)
}
}
impl TryFrom<Target> for ObjectId {
type Error = Target;
fn try_from(value: Target) -> Result<Self, Self::Error> {
match value {
Target::Peeled(id) => Ok(id),
Target::Symbolic(_) => Err(value),
}
}
}
impl From<FullName> for Target {
fn from(name: FullName) -> Self {
Target::Symbolic(name)
}
}
impl fmt::Display for Target {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match self {
Target::Peeled(oid) => oid.fmt(f),
Target::Symbolic(name) => write!(f, "ref: {}", name.as_bstr()),
}
}
}
|
