AtomicObject + StaticPair

src/std/atomic.rs

@@ -1,6 +1,7 @@
 //! This module allows to describe a primitive subset of [Mentionable] types, [Atomic]s,
 //! simple static types, which are completely [Context]-independent.
 
+pub mod atomic_object;
 pub mod plain;
 
 use std::marker::PhantomData;
@@ -19,55 +20,6 @@ pub trait Atomic: 'static + Sized + Clone + Serializable {
     fn unexpected_tail(tail: &[u8]) -> Self::ParseError;
 }
 
-/// Generic implementation of a factory for [Atomic]s.
-pub struct AtomicFactory<A: Atomic>(PhantomData<A>);
-
-impl<A: Atomic> AtomicFactory<A> {
-    fn new() -> Self {
-        AtomicFactory(PhantomData)
-    }
-}
-
-impl<A: Atomic> Clone for AtomicFactory<A> {
-    fn clone(&self) -> Self {
-        Self::new()
-    }
-}
-
-impl<'a, Ctx: 'a + Context, A: Atomic> Mentionable<'a, Ctx> for A {
-    type Fctr = AtomicFactory<A>;
-
-    fn factory(&self) -> Self::Fctr {
-        AtomicFactory::new()
-    }
-
-    fn topology(&self) -> Hash {
-        Ctx::hash(b"")
-    }
-
-    fn points(&self) -> Vec<Point<'a, Ctx, TypelessMentionable<'a, Ctx>>> {
-        vec![]
-    }
-}
-
-impl<'a, Ctx: 'a + Context, A: Atomic> Factory<'a, Ctx> for AtomicFactory<A> {
-    type Mtbl = A;
-
-    type ParseError = A::ParseError;
-
-    fn deserialize(
-        &self,
-        deserializer: &mut dyn Deserializer,
-        _resolver: Rc<dyn Resolver<'a, Ctx>>,
-    ) -> ParseResult<'a, Ctx, Self> {
-        A::deserialize(deserializer)
-    }
-
-    fn unexpected_tail(&self, tail: &[u8]) -> Self::ParseError {
-        A::unexpected_tail(tail)
-    }
-}
-
 fn _parse_slice<A: Atomic>(slice: &[u8]) -> Result<A, A::ParseError> {
     let mut deserializer = SliceDeserializer::from(slice);
     let mentionable = A::deserialize(&mut deserializer)?;
@@ -81,17 +33,11 @@ fn _parse_slice<A: Atomic>(slice: &[u8]) -> Result<A, A::ParseError> {
 
 /// Extension trait to provide method-like utilities associated with [Atomic]s.
 pub trait ExtAtomic: Atomic {
-    /// Short-hand for getting specific [`AtomicFactory`].
-    fn f() -> AtomicFactory<Self>;
     /// Static equivalent of [`ExtFactory::parse_slice`].
     fn parse_slice(slice: &[u8]) -> Result<Self, Self::ParseError>;
 }
 
 impl<A: Atomic> ExtAtomic for A {
-    fn f() -> AtomicFactory<Self> {
-        AtomicFactory::new()
-    }
-
     fn parse_slice(slice: &[u8]) -> Result<Self, Self::ParseError> {
         _parse_slice(slice)
     }

src/std/atomic/atomic_object.rs

@@ -0,0 +1,100 @@
+use std::ops::Deref;
+
+use super::*;
+
+pub struct AtomicObject<A: Atomic> {
+    atomic: A,
+}
+
+impl<A: Atomic> From<A> for AtomicObject<A> {
+    fn from(value: A) -> Self {
+        Self { atomic: value }
+    }
+}
+
+impl<A: Atomic> AsRef<A> for AtomicObject<A> {
+    fn as_ref(&self) -> &A {
+        &self.atomic
+    }
+}
+
+impl<A: Atomic> Deref for AtomicObject<A> {
+    type Target = A;
+
+    fn deref(&self) -> &Self::Target {
+        &self.atomic
+    }
+}
+
+impl<A: Atomic> Serializable for AtomicObject<A> {
+    fn serialize(&self, serializer: &mut dyn Serializer) {
+        self.atomic.serialize(serializer)
+    }
+}
+
+impl<'a, Ctx: 'a + Context, A: Atomic> Mentionable<'a, Ctx> for AtomicObject<A> {
+    type Fctr = AtomicFactory<A>;
+
+    fn factory(&self) -> Self::Fctr {
+        AtomicFactory::new()
+    }
+
+    fn topology(&self) -> Hash {
+        Ctx::hash(b"")
+    }
+
+    fn points(&self) -> Vec<Point<'a, Ctx, TypelessMentionable<'a, Ctx>>> {
+        vec![]
+    }
+}
+
+/// Generic implementation of a factory for [Atomic]s.
+pub struct AtomicFactory<A: Atomic>(PhantomData<A>);
+
+impl<A: Atomic> AtomicFactory<A> {
+    fn new() -> Self {
+        AtomicFactory(PhantomData)
+    }
+}
+
+impl<A: Atomic> Clone for AtomicFactory<A> {
+    fn clone(&self) -> Self {
+        Self::new()
+    }
+}
+
+impl<'a, Ctx: 'a + Context, A: Atomic> Factory<'a, Ctx> for AtomicFactory<A> {
+    type Mtbl = AtomicObject<A>;
+
+    type ParseError = A::ParseError;
+
+    fn deserialize(
+        &self,
+        deserializer: &mut dyn Deserializer,
+        _resolver: Rc<dyn Resolver<'a, Ctx>>,
+    ) -> ParseResult<'a, Ctx, Self> {
+        Ok(A::deserialize(deserializer)?.into())
+    }
+
+    fn unexpected_tail(&self, tail: &[u8]) -> Self::ParseError {
+        A::unexpected_tail(tail)
+    }
+}
+
+/// Extension trait to provide method-like utilities associated with [AtomicObject]s.
+pub trait ExtAtomicObject: Atomic {
+    /// Short-hand for getting specific [`AtomicFactory`].
+    fn f() -> AtomicFactory<Self>;
+    /// Short-hand for getting specific [`AtomicObject`].
+    fn m(self) -> AtomicObject<Self>;
+}
+
+impl<A: Atomic> ExtAtomicObject for A {
+    fn f() -> AtomicFactory<Self> {
+        AtomicFactory::new()
+    }
+    fn m(self) -> AtomicObject<Self> {
+        self.into()
+    }
+}
+

src/std/collections.rs

@@ -1,3 +1,4 @@
 //! Standard generic collections.
 
+pub mod pair;
 pub mod stack;

src/std/collections/pair.rs

@@ -0,0 +1,93 @@
+use std::error::Error;
+use std::fmt::Display;
+
+use crate::core::*;
+use crate::std::inlining::static_pair::*;
+use crate::std::inlining::*;
+
+#[derive(Clone)]
+pub struct Pair<A, B> {
+    pub a: A,
+    pub b: B,
+}
+
+impl<A: Serializable, B: Serializable> StaticPairSerializable for Pair<A, B> {
+    type SA = A;
+    type SB = B;
+
+    fn s_elements(&self) -> (&Self::SA, &Self::SB) {
+        (&self.a, &self.b)
+    }
+}
+
+#[derive(Debug)]
+pub enum PairParseError<ErrorA: Error, ErrorB: Error> {
+    A(ErrorA),
+    B(ErrorB),
+}
+
+impl<ErrorA: Error, ErrorB: Error> Display for PairParseError<ErrorA, ErrorB> {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            PairParseError::A(error) => f.write_fmt(format_args!(
+                "error while parsing first element of a pair: {}",
+                error
+            )),
+            PairParseError::B(error) => f.write_fmt(format_args!(
+                "error while parsing first element of a pair: {}",
+                error
+            )),
+        }
+    }
+}
+
+impl<ErrorA: Error, ErrorB: Error> Error for PairParseError<ErrorA, ErrorB> {}
+
+impl<'a, Ctx: 'a + Context, A: Mentionable<'a, Ctx>, B: Mentionable<'a, Ctx>> StaticPair<'a, Ctx>
+    for Pair<A, B>
+where
+    A::Fctr: InlineableFactory,
+{
+    type FactoryData = Pair<Self::FA, Self::FB>;
+    type A = A;
+    type B = B;
+    type FA = A::Fctr;
+    type FB = B::Fctr;
+    type ParseError = PairParseError<
+        <A::Fctr as Factory<'a, Ctx>>::ParseError,
+        <B::Fctr as Factory<'a, Ctx>>::ParseError,
+    >;
+
+    fn factories(factory_data: &Self::FactoryData) -> (&Self::FA, &Self::FB) {
+        (&factory_data.a, &factory_data.b)
+    }
+
+    fn from_parsed(_factory_data: &Self::FactoryData, a: Self::A, b: Self::B) -> Self {
+        Pair { a, b }
+    }
+
+    fn from_error_a(
+        _factory_data: &Self::FactoryData,
+        error: <Self::FA as Factory<'a, Ctx>>::ParseError,
+    ) -> Self::ParseError {
+        PairParseError::A(error)
+    }
+
+    fn from_error_b(
+        _factory_data: &Self::FactoryData,
+        error: <Self::FB as Factory<'a, Ctx>>::ParseError,
+    ) -> Self::ParseError {
+        PairParseError::B(error)
+    }
+
+    fn factory_data(&self) -> Self::FactoryData {
+        Pair {
+            a: self.a.factory(),
+            b: self.b.factory(),
+        }
+    }
+
+    fn elements(&self) -> (&Self::A, &Self::B) {
+        (&self.a, &self.b)
+    }
+}

src/std/collections/stack.rs

@@ -175,27 +175,29 @@ impl<'a, Ctx: 'a + Context, A: Mentionable<'a, Ctx>> ExtStack<'a, Ctx, A> for St
 #[cfg(test)]
 mod tests {
     use super::*;
+    use crate::std::atomic::atomic_object::*;
     use crate::std::atomic::plain::*;
-    use crate::std::atomic::*;
     use crate::testing::*;
 
-    type T = Stack<'static, TestContext, Plain>;
+    type T = Stack<'static, TestContext, AtomicObject<Plain>>;
 
-    fn unstack(stack: &T) -> Result<Vec<Vec<u8>>, StackFaiure<'static, TestContext, Plain>> {
+    fn unstack(
+        stack: &T,
+    ) -> Result<Vec<Vec<u8>>, StackFaiure<'static, TestContext, AtomicObject<Plain>>> {
         Ok(stack
             .clone()
             .vec()?
             .iter()
-            .map(|plain| plain.bytes())
+            .map(|plain| plain.raw())
             .collect())
     }
 
     fn make_stack() -> T {
         let stack: T = Stack::empty(Plain::f());
 
-        let stack: T = stack.add(Plain::from_slice(b"A0"));
-        let stack: T = stack.add(Plain::from_slice(b"B1"));
-        let stack: T = stack.add(Plain::from_slice(b"C2"));
+        let stack: T = stack.add(Plain::from_slice(b"A0").into());
+        let stack: T = stack.add(Plain::from_slice(b"B1").into());
+        let stack: T = stack.add(Plain::from_slice(b"C2").into());
 
         stack
     }
@@ -207,7 +209,7 @@ mod tests {
     }
 
     #[test]
-    fn test_stack() -> Result<(), StackFaiure<'static, TestContext, Plain>> {
+    fn test_stack() -> Result<(), StackFaiure<'static, TestContext, AtomicObject<Plain>>> {
         let stack: T = make_stack();
 
         validate_stack(&stack);
@@ -244,5 +246,5 @@ impl<'a, Ctx: 'a + Context, A: Mentionable<'a, Ctx>> ConstSizeFactory
 where
     A::Fctr: ConstSizeFactory,
 {
-    const SIZE: usize = { Stack::<'a, Ctx, A>::SIZE + A::Fctr::SIZE };
+    const SIZE: usize = Stack::<'a, Ctx, A>::SIZE + A::Fctr::SIZE;
 }

src/std/inlining.rs

@@ -1,6 +1,7 @@
-pub mod staticpair;
+pub mod static_pair;
 
 use super::atomic::*;
+use super::atomic::atomic_object::*;
 use crate::core::*;
 use crate::std::*;
 

src/std/inlining/static_pair.rs

@@ -0,0 +1,134 @@
+use super::*;
+use crate::core::*;
+
+pub trait StaticPairSerializable {
+    type SA: Serializable;
+    type SB: Serializable;
+
+    fn s_elements(&self) -> (&Self::SA, &Self::SB);
+}
+
+pub trait StaticPair<'a, Ctx: 'a + Context>:
+    'a + StaticPairSerializable<SA = Self::A, SB = Self::B>
+{
+    type FactoryData: 'a + Clone;
+    type A: Mentionable<'a, Ctx, Fctr = Self::FA>;
+    type B: Mentionable<'a, Ctx, Fctr = Self::FB>;
+    type FA: Factory<'a, Ctx, Mtbl = Self::A> + InlineableFactory;
+    type FB: Factory<'a, Ctx, Mtbl = Self::B>;
+    type ParseError: 'a + Error;
+
+    fn factories(factory_data: &Self::FactoryData) -> (&Self::FA, &Self::FB);
+    fn from_parsed(factory_data: &Self::FactoryData, a: Self::A, b: Self::B) -> Self;
+    fn from_error_a(
+        factory_data: &Self::FactoryData,
+        error: <Self::FA as Factory<'a, Ctx>>::ParseError,
+    ) -> Self::ParseError;
+    fn from_error_b(
+        factory_data: &Self::FactoryData,
+        error: <Self::FB as Factory<'a, Ctx>>::ParseError,
+    ) -> Self::ParseError;
+    fn factory_data(&self) -> Self::FactoryData;
+    fn elements(&self) -> (&Self::A, &Self::B);
+}
+
+pub struct StaticPairObject<SP> {
+    pair: SP,
+}
+
+pub struct StaticPairFactory<'a, Ctx: 'a + Context, SP: StaticPair<'a, Ctx>> {
+    factory_data: SP::FactoryData,
+}
+
+impl<SP: StaticPairSerializable> Serializable for StaticPairObject<SP> {
+    fn serialize(&self, serializer: &mut dyn Serializer) {
+        let (a, b) = self.pair.s_elements();
+        a.serialize(serializer);
+        b.serialize(serializer);
+    }
+}
+
+impl<'a, Ctx: 'a + Context, SP: StaticPair<'a, Ctx>> Mentionable<'a, Ctx> for StaticPairObject<SP> {
+    type Fctr = StaticPairFactory<'a, Ctx, SP>;
+
+    fn factory(&self) -> Self::Fctr {
+        StaticPairFactory {
+            factory_data: self.pair.factory_data(),
+        }
+    }
+
+    fn points(&self) -> Vec<Point<'a, Ctx, TypelessMentionable<'a, Ctx>>> {
+        let (a, b) = self.pair.elements();
+        let mut vec = a.points();
+        vec.extend(b.points());
+        vec
+    }
+}
+
+impl<'a, Ctx: 'a + Context, SP: StaticPair<'a, Ctx>> Clone for StaticPairFactory<'a, Ctx, SP> {
+    fn clone(&self) -> Self {
+        Self {
+            factory_data: self.factory_data.clone(),
+        }
+    }
+}
+
+impl<'a, Ctx: 'a + Context, SP: StaticPair<'a, Ctx>> Factory<'a, Ctx>
+    for StaticPairFactory<'a, Ctx, SP>
+{
+    type Mtbl = StaticPairObject<SP>;
+
+    type ParseError = SP::ParseError;
+
+    fn deserialize(
+        &self,
+        deserializer: &mut dyn Deserializer,
+        resolver: Rc<dyn Resolver<'a, Ctx>>,
+    ) -> ParseResult<'a, Ctx, Self> {
+        let (fa, fb) = SP::factories(&self.factory_data);
+        let a: SP::A = match fa.deserialize(deserializer, resolver.clone()) {
+            Ok(a) => a,
+            Err(error) => return Err(SP::from_error_a(&self.factory_data, error)),
+        };
+        let b: SP::B = match fb.deserialize(deserializer, resolver) {
+            Ok(b) => b,
+            Err(error) => return Err(SP::from_error_b(&self.factory_data, error)),
+        };
+        Ok(StaticPairObject {
+            pair: SP::from_parsed(&self.factory_data, a, b),
+        })
+    }
+
+    fn unexpected_tail(&self, tail: &[u8]) -> Self::ParseError {
+        let (_, fb) = SP::factories(&self.factory_data);
+        SP::from_error_b(&self.factory_data, fb.unexpected_tail(tail))
+    }
+}
+
+impl<'a, Ctx: 'a + Context, SP: StaticPair<'a, Ctx>> InlineableFactory
+    for StaticPairFactory<'a, Ctx, SP>
+where
+    SP::FB: InlineableFactory,
+{
+}
+
+impl<'a, Ctx: 'a + Context, SP: StaticPair<'a, Ctx>> FixedSizeFactory
+    for StaticPairFactory<'a, Ctx, SP>
+where
+    SP::FA: FixedSizeFactory,
+    SP::FB: FixedSizeFactory,
+{
+    fn size(&self) -> usize {
+        let (fa, fb) = SP::factories(&self.factory_data);
+        fa.size() + fb.size()
+    }
+}
+
+impl<'a, Ctx: 'a + Context, SP: StaticPair<'a, Ctx>> ConstSizeFactory
+    for StaticPairFactory<'a, Ctx, SP>
+where
+    SP::FA: ConstSizeFactory,
+    SP::FB: ConstSizeFactory,
+{
+    const SIZE: usize = SP::FA::SIZE + SP::FB::SIZE;
+}

src/std/inlining/staticpair.rs

@@ -1 +0,0 @@
-