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|
use std::slice;
use super::value::ProtobufValue;
use super::value::ReflectValueRef;
use crate::repeated::RepeatedField;
pub trait ReflectRepeated: 'static {
fn reflect_iter(&self) -> ReflectRepeatedIter;
fn len(&self) -> usize;
fn get(&self, index: usize) -> &dyn ProtobufValue;
}
impl<V: ProtobufValue + 'static> ReflectRepeated for Vec<V> {
fn reflect_iter<'a>(&'a self) -> ReflectRepeatedIter<'a> {
ReflectRepeatedIter {
imp: Box::new(ReflectRepeatedIterImplSlice::<'a, V> { iter: self.iter() }),
}
}
fn len(&self) -> usize {
Vec::len(self)
}
fn get(&self, index: usize) -> &dyn ProtobufValue {
&self[index]
}
}
// useless
impl<V: ProtobufValue + 'static> ReflectRepeated for [V] {
fn reflect_iter<'a>(&'a self) -> ReflectRepeatedIter<'a> {
ReflectRepeatedIter {
imp: Box::new(ReflectRepeatedIterImplSlice::<'a, V> { iter: self.iter() }),
}
}
fn len(&self) -> usize {
<[_]>::len(self)
}
fn get(&self, index: usize) -> &dyn ProtobufValue {
&self[index]
}
}
impl<V: ProtobufValue + 'static> ReflectRepeated for RepeatedField<V> {
fn reflect_iter<'a>(&'a self) -> ReflectRepeatedIter<'a> {
ReflectRepeatedIter {
imp: Box::new(ReflectRepeatedIterImplSlice::<'a, V> { iter: self.iter() }),
}
}
fn len(&self) -> usize {
RepeatedField::len(self)
}
fn get(&self, index: usize) -> &dyn ProtobufValue {
&self[index]
}
}
trait ReflectRepeatedIterTrait<'a> {
fn next(&mut self) -> Option<&'a dyn ProtobufValue>;
}
struct ReflectRepeatedIterImplSlice<'a, V: ProtobufValue + 'static> {
iter: slice::Iter<'a, V>,
}
impl<'a, V: ProtobufValue + 'static> ReflectRepeatedIterTrait<'a>
for ReflectRepeatedIterImplSlice<'a, V>
{
fn next(&mut self) -> Option<&'a dyn ProtobufValue> {
self.iter.next().map(|v| v as &dyn ProtobufValue)
}
}
pub struct ReflectRepeatedIter<'a> {
imp: Box<dyn ReflectRepeatedIterTrait<'a> + 'a>,
}
impl<'a> Iterator for ReflectRepeatedIter<'a> {
type Item = &'a dyn ProtobufValue;
fn next(&mut self) -> Option<Self::Item> {
self.imp.next()
}
}
impl<'a> IntoIterator for &'a dyn ReflectRepeated {
type IntoIter = ReflectRepeatedIter<'a>;
type Item = &'a dyn ProtobufValue;
fn into_iter(self) -> Self::IntoIter {
self.reflect_iter()
}
}
pub trait ReflectRepeatedEnum<'a> {
fn len(&self) -> usize;
fn get(&self, index: usize) -> ReflectValueRef<'a>;
}
pub trait ReflectRepeatedMessage<'a> {
fn len(&self) -> usize;
fn get(&self, index: usize) -> ReflectValueRef<'a>;
}
pub enum ReflectRepeatedRef<'a> {
Generic(&'a dyn ReflectRepeated),
U32(&'a [u32]),
U64(&'a [u64]),
I32(&'a [i32]),
I64(&'a [i64]),
F32(&'a [f32]),
F64(&'a [f64]),
Bool(&'a [bool]),
String(&'a [String]),
Bytes(&'a [Vec<u8>]),
Enum(Box<dyn ReflectRepeatedEnum<'a> + 'a>),
Message(Box<dyn ReflectRepeatedMessage<'a> + 'a>),
}
impl<'a> ReflectRepeatedRef<'a> {
fn len(&self) -> usize {
match *self {
ReflectRepeatedRef::Generic(ref r) => r.len(),
ReflectRepeatedRef::U32(ref r) => r.len(),
ReflectRepeatedRef::U64(ref r) => r.len(),
ReflectRepeatedRef::I32(ref r) => r.len(),
ReflectRepeatedRef::I64(ref r) => r.len(),
ReflectRepeatedRef::F32(ref r) => r.len(),
ReflectRepeatedRef::F64(ref r) => r.len(),
ReflectRepeatedRef::Bool(ref r) => r.len(),
ReflectRepeatedRef::String(ref r) => r.len(),
ReflectRepeatedRef::Bytes(ref r) => r.len(),
ReflectRepeatedRef::Enum(ref r) => r.len(),
ReflectRepeatedRef::Message(ref r) => r.len(),
}
}
fn get(&self, index: usize) -> ReflectValueRef<'a> {
match *self {
ReflectRepeatedRef::Generic(ref r) => r.get(index).as_ref(),
ReflectRepeatedRef::U32(ref r) => ReflectValueRef::U32(r[index]),
ReflectRepeatedRef::U64(ref r) => ReflectValueRef::U64(r[index]),
ReflectRepeatedRef::I32(ref r) => ReflectValueRef::I32(r[index]),
ReflectRepeatedRef::I64(ref r) => ReflectValueRef::I64(r[index]),
ReflectRepeatedRef::F32(ref r) => ReflectValueRef::F32(r[index]),
ReflectRepeatedRef::F64(ref r) => ReflectValueRef::F64(r[index]),
ReflectRepeatedRef::Bool(ref r) => ReflectValueRef::Bool(r[index]),
ReflectRepeatedRef::String(ref r) => ReflectValueRef::String(&r[index]),
ReflectRepeatedRef::Bytes(ref r) => ReflectValueRef::Bytes(&r[index]),
ReflectRepeatedRef::Enum(ref r) => r.get(index),
ReflectRepeatedRef::Message(ref r) => r.get(index),
}
}
}
pub struct ReflectRepeatedRefIter<'a> {
repeated: &'a ReflectRepeatedRef<'a>,
pos: usize,
}
impl<'a> Iterator for ReflectRepeatedRefIter<'a> {
type Item = ReflectValueRef<'a>;
fn next(&mut self) -> Option<Self::Item> {
if self.pos < self.repeated.len() {
let pos = self.pos;
self.pos += 1;
Some(self.repeated.get(pos))
} else {
None
}
}
}
impl<'a> IntoIterator for &'a ReflectRepeatedRef<'a> {
type IntoIter = ReflectRepeatedRefIter<'a>;
type Item = ReflectValueRef<'a>;
fn into_iter(self) -> Self::IntoIter {
ReflectRepeatedRefIter {
repeated: self,
pos: 0,
}
}
}
|
