2021-04-30 03:49:53 +02:00
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use {
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2022-05-08 23:30:49 +02:00
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crate::{
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core::{
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type_term::{TypeDict, TypeTerm, TypeID},
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AnyOuterViewPort, OuterViewPort, View,
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},
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2022-11-13 15:26:25 +01:00
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Nested
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2021-11-19 12:19:52 +01:00
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},
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2021-04-30 03:49:53 +02:00
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std::{
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collections::HashMap,
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sync::{Arc, RwLock},
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2021-04-30 03:49:53 +02:00
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},
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};
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//<<<<>>>><<>><><<>><<<*>>><<>><><<>><<<<>>>>
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2021-05-10 01:57:47 +02:00
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#[derive(Clone)]
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pub struct ReprTree {
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2022-11-18 00:21:29 +01:00
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type_tag: TypeTerm,
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port: Option<AnyOuterViewPort>,
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branches: HashMap<TypeTerm, Arc<RwLock<ReprTree>>>,
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}
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impl ReprTree {
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pub fn new(type_tag: TypeTerm) -> Self {
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ReprTree {
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type_tag,
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port: None,
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branches: HashMap::new(),
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2021-05-10 01:57:47 +02:00
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}
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}
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2022-11-18 00:21:29 +01:00
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pub fn new_leaf(type_tag: TypeTerm, port: AnyOuterViewPort) -> Arc<RwLock<Self>> {
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let mut tree = ReprTree::new(type_tag);
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2021-05-10 01:57:47 +02:00
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tree.insert_leaf(vec![].into_iter(), port);
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Arc::new(RwLock::new(tree))
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}
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2022-12-18 01:20:17 +01:00
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pub fn insert_branch(&mut self, repr: Arc<RwLock<ReprTree>>) {
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self.branches.insert(repr.clone().read().unwrap().type_tag.clone(), repr.clone());
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2021-05-10 01:57:47 +02:00
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}
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pub fn insert_leaf(
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&mut self,
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mut type_ladder: impl Iterator<Item = TypeTerm>,
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port: AnyOuterViewPort,
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2021-05-10 01:57:47 +02:00
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) {
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if let Some(type_term) = type_ladder.next() {
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if let Some(next_repr) = self.branches.get(&type_term) {
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next_repr.write().unwrap().insert_leaf(type_ladder, port);
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} else {
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let mut next_repr = ReprTree::new(type_term.clone());
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next_repr.insert_leaf(type_ladder, port);
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self.insert_branch(Arc::new(RwLock::new(next_repr)));
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}
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} else {
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self.port = Some(port);
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}
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}
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2021-04-30 03:49:53 +02:00
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2022-11-18 00:21:29 +01:00
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//<<<<>>>><<>><><<>><<<*>>><<>><><<>><<<<>>>>
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2021-11-19 12:19:52 +01:00
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pub fn get_port<V: View + ?Sized + 'static>(&self) -> Option<OuterViewPort<V>>
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where
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V::Msg: Clone,
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{
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Some(
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self.port
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.clone()?
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.downcast::<V>()
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.ok()
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.unwrap()
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)
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}
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2022-12-18 01:20:17 +01:00
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pub fn get_view<V: View + ?Sized + 'static>(&self) -> Option<Arc<V>>
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where
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V::Msg: Clone,
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{
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self.get_port::<V>()?
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.get_view()
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}
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// descend
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pub fn downcast(&self, dst_type: &TypeTerm) -> Option<Arc<RwLock<ReprTree>>> {
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self.branches.get(dst_type).cloned()
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}
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2022-11-18 00:21:29 +01:00
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pub fn downcast_ladder(&self, mut repr_ladder: impl Iterator<Item = TypeTerm>) -> Option<Arc<RwLock<ReprTree>>> {
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let first = repr_ladder.next()?;
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repr_ladder.fold(
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self.downcast(&first),
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|s, t| s?.read().unwrap().downcast(&t))
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}
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2022-12-18 01:20:17 +01:00
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// ascend
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pub fn upcast(rt: &Arc<RwLock<Self>>, type_term: TypeTerm) -> Arc<RwLock<ReprTree>> {
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let mut n = Self::new(type_term);
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n.insert_branch(rt.clone());
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Arc::new(RwLock::new(n))
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}
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2022-11-18 00:21:29 +01:00
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/*
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pub fn add_iso_repr(
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&self,
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type_ladder: impl Iterator<Item = TypeTerm>,
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morphism_constructors: &HashMap<MorphismType, Box<dyn Fn(Object) -> Object>>,
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) {
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let mut cur_repr = self.repr.clone();
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2021-04-30 03:49:53 +02:00
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2021-05-10 01:57:47 +02:00
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for dst_type in type_ladder {
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if let Some(next_repr) = self.repr.read().unwrap().branches.get(&dst_type) {
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// go deeper
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cur_repr = next_repr.clone();
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} else {
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// search for morphism constructor and insert new repr
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let mut obj = None;
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2021-05-10 01:57:47 +02:00
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for src_type in cur_repr.read().unwrap().branches.keys() {
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if let Some(ctor) = morphism_constructors.get(&MorphismType {
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mode: MorphismMode::Iso,
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src_type: src_type.clone(),
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dst_type: dst_type.clone(),
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}) {
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let new_obj = ctor(Object {
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type_tag: src_type.clone(),
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repr: cur_repr
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.read()
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.unwrap()
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.branches
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.get(&src_type)
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.unwrap()
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.clone(),
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});
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2021-05-10 01:57:47 +02:00
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assert!(new_obj.type_tag == dst_type);
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obj = Some(new_obj);
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break;
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}
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}
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if let Some(obj) = obj {
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cur_repr
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.write()
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.unwrap()
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.insert_branch(obj.type_tag, obj.repr);
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} else {
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panic!("could not find matching isomorphism!");
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}
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}
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}
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}
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2021-05-10 01:57:47 +02:00
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pub fn add_mono_repr<'a>(
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&self,
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type_ladder: impl Iterator<Item = TypeTerm>,
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morphism_constructors: &HashMap<MorphismType, Box<dyn Fn(Object) -> Object>>,
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) {
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let mut cur_type = self.type_tag.clone();
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let mut cur_repr = self.repr.clone();
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for dst_type in type_ladder {
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if let Some(next_repr) = self.repr.read().unwrap().branches.get(&dst_type) {
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// go deeper
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cur_type = dst_type;
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cur_repr = next_repr.clone();
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} else {
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if let Some(constructor) = morphism_constructors.get(&MorphismType {
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mode: MorphismMode::Mono,
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src_type: cur_type.clone(),
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dst_type: dst_type.clone(),
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}) {
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let new_obj = constructor(Object {
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type_tag: cur_type.clone(),
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repr: cur_repr
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.read()
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.unwrap()
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.branches
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.get(&cur_type)
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.unwrap()
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.clone(),
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});
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assert!(new_obj.type_tag == dst_type);
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cur_repr
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.write()
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.unwrap()
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.insert_branch(new_obj.type_tag.clone(), new_obj.repr.clone());
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2021-05-10 01:57:47 +02:00
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cur_type = new_obj.type_tag;
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cur_repr = new_obj.repr;
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}
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}
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}
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2021-04-30 03:49:53 +02:00
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}
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2021-05-10 01:57:47 +02:00
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// replace with higher-level type in which self is a repr branch
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pub fn epi_cast<'a>(
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&self,
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2021-05-13 16:22:30 +02:00
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_type_ladder: impl Iterator<Item = TypeTerm>,
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_morphism_constructors: &HashMap<MorphismType, Box<dyn Fn(Object) -> Object>>,
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) {
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// todo
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}
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*/
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}
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//<<<<>>>><<>><><<>><<<*>>><<>><><<>><<<<>>>>
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2021-05-22 01:33:58 +02:00
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pub struct TypeLadder(Vec<TypeTerm>);
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2021-05-10 01:57:47 +02:00
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#[derive(Clone, Copy, Hash, PartialEq, Eq)]
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pub enum MorphismMode {
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/// Isomorphism
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/// e.g. `( PositionalInteger 10 BigEndian ) <~> ( PositionalInteger 16 LittleEndian )`
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Iso,
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/// Monomorphism, i.e. injective functions,
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/// upcast-view, downcast-control, semantic gain
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/// e.g. `( Sequence ( Digit 16 ) ) ~> ( PositionalInteger 16 LittleEndian )`
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Mono,
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/// Epimorphsim, i.e. surjective functions,
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/// upcast-control, downcast-view, possible loss of entropy
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/// e.g. `( Ascii ) ~> ( Digit 16 )`
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Epi,
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/// Any other function
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Any,
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}
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2021-05-10 01:57:47 +02:00
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#[derive(Clone, Hash, PartialEq, Eq)]
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pub struct MorphismType {
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pub mode: MorphismMode,
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pub src_type: TypeTerm,
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pub dst_type: TypeTerm,
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}
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//<<<<>>>><<>><><<>><<<*>>><<>><><<>><<<<>>>>
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pub struct Context {
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/// assigns a name to every type
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type_dict: Arc<RwLock<TypeDict>>,
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/// objects
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objects: HashMap<String, Arc<RwLock<ReprTree>>>,
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/// editors
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editor_ctors: HashMap<TypeID, Arc<dyn Fn(Arc<RwLock<Self>>, TypeTerm, usize) -> Option<Arc<RwLock<dyn Nested + Send + Sync>>> + Send + Sync>>,
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/// morphisms
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default_constructors: HashMap<TypeTerm, Box<dyn Fn() -> Arc<RwLock<ReprTree>> + Send + Sync>>,
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morphism_constructors: HashMap<MorphismType, Box<dyn Fn(Arc<RwLock<ReprTree>>) -> Arc<RwLock<ReprTree>> + Send + Sync>>,
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/// recursion
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parent: Option<Arc<RwLock<Context>>>,
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}
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impl Context {
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pub fn with_parent(parent: Option<Arc<RwLock<Context>>>) -> Self {
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Context {
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type_dict: match parent.as_ref() {
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Some(p) => p.read().unwrap().type_dict.clone(),
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None => Arc::new(RwLock::new(TypeDict::new()))
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},
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editor_ctors: HashMap::new(),
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default_constructors: HashMap::new(),
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morphism_constructors: HashMap::new(),
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objects: HashMap::new(),
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parent,
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}
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}
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pub fn new() -> Self {
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Context::with_parent(None)
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}
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pub fn add_typename(&mut self, tn: String) {
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self.type_dict.write().unwrap().add_typename(tn);
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}
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pub fn type_term_from_str(&self, tn: &str) -> Option<TypeTerm> {
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self.type_dict.read().unwrap().type_term_from_str(&tn)
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}
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2022-12-18 01:20:17 +01:00
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pub fn type_term_to_str(&self, t: &TypeTerm) -> String {
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self.type_dict.read().unwrap().type_term_to_str(&t)
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}
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pub fn add_editor_ctor(&mut self, tn: &str, mk_editor: Arc<dyn Fn(Arc<RwLock<Self>>, TypeTerm, usize) -> Option<Arc<RwLock<dyn Nested + Send + Sync>>> + Send + Sync>) {
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let mut dict = self.type_dict.write().unwrap();
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let tyid = dict.get_typeid(&tn.into()).unwrap_or( dict.add_typename(tn.into()) );
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self.editor_ctors.insert(tyid, mk_editor);
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2022-05-08 23:30:49 +02:00
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}
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2022-11-19 01:45:57 +01:00
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pub fn get_editor_ctor(&self, ty: &TypeTerm) -> Option<Arc<dyn Fn(Arc<RwLock<Self>>, TypeTerm, usize) -> Option<Arc<RwLock<dyn Nested + Send + Sync>>> + Send + Sync>> {
|
2022-12-18 01:39:01 +01:00
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if let TypeTerm::Type{ id, args: _ } = ty.clone() {
|
2022-11-19 01:45:57 +01:00
|
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if let Some(m) = self.editor_ctors.get(&id).cloned() {
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Some(m)
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} else {
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|
self.parent.as_ref()?
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.read().unwrap()
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.get_editor_ctor(&ty)
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}
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2022-05-08 23:30:49 +02:00
|
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} else {
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|
None
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|
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|
}
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|
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}
|
2022-11-13 15:26:25 +01:00
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2022-11-19 01:45:57 +01:00
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pub fn make_editor(ctx: Arc<RwLock<Self>>, type_term: TypeTerm, depth: usize) -> Option<Arc<RwLock<dyn Nested + Send + Sync>>> {
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let mk_editor = ctx.read().unwrap().get_editor_ctor(&type_term)?;
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|
mk_editor(ctx, type_term, depth)
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}
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|
2021-05-10 01:57:47 +02:00
|
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pub fn add_morphism(
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&mut self,
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morph_type: MorphismType,
|
2022-11-18 00:21:29 +01:00
|
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|
morph_fn: Box<dyn Fn(Arc<RwLock<ReprTree>>) -> Arc<RwLock<ReprTree>> + Send + Sync>,
|
2021-05-10 01:57:47 +02:00
|
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|
) {
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|
self.morphism_constructors.insert(morph_type, morph_fn);
|
|
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|
}
|
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|
/// adds an object without any representations
|
2021-11-19 12:19:52 +01:00
|
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|
pub fn add_obj(&mut self, name: String, typename: &str) {
|
2022-11-19 01:45:57 +01:00
|
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|
let type_tag = self.type_dict.read().unwrap().type_term_from_str(typename).unwrap();
|
2021-05-10 01:57:47 +02:00
|
|
|
|
2021-04-30 03:49:53 +02:00
|
|
|
self.objects.insert(
|
|
|
|
name,
|
2021-05-10 01:57:47 +02:00
|
|
|
if let Some(ctor) = self.default_constructors.get(&type_tag) {
|
|
|
|
ctor()
|
|
|
|
} else {
|
2022-11-18 00:21:29 +01:00
|
|
|
Arc::new(RwLock::new(ReprTree::new(type_tag)))
|
2021-11-19 12:19:52 +01:00
|
|
|
},
|
2021-04-30 03:49:53 +02:00
|
|
|
);
|
|
|
|
}
|
|
|
|
|
2022-11-18 00:21:29 +01:00
|
|
|
pub fn get_obj(&self, name: &String) -> Option<Arc<RwLock<ReprTree>>> {
|
2021-05-10 01:57:47 +02:00
|
|
|
if let Some(obj) = self.objects.get(name) {
|
|
|
|
Some(obj.clone())
|
|
|
|
} else if let Some(parent) = self.parent.as_ref() {
|
|
|
|
parent.read().unwrap().get_obj(name)
|
|
|
|
} else {
|
|
|
|
None
|
2021-04-30 03:49:53 +02:00
|
|
|
}
|
|
|
|
}
|
2021-11-19 12:19:52 +01:00
|
|
|
|
2022-11-18 00:21:29 +01:00
|
|
|
/*
|
2021-11-19 12:19:52 +01:00
|
|
|
pub fn get_obj_port<'a, V: View + ?Sized + 'static>(
|
2021-05-10 01:57:47 +02:00
|
|
|
&self,
|
|
|
|
name: &str,
|
2021-11-19 12:19:52 +01:00
|
|
|
type_ladder: impl Iterator<Item = &'a str>,
|
2021-05-22 01:33:58 +02:00
|
|
|
) -> Option<OuterViewPort<V>>
|
2021-11-19 12:19:52 +01:00
|
|
|
where
|
|
|
|
V::Msg: Clone,
|
|
|
|
{
|
2021-05-10 01:57:47 +02:00
|
|
|
self.get_obj(&name.into())?
|
2021-11-19 12:19:52 +01:00
|
|
|
.downcast_ladder(type_ladder.map(|tn| self.type_dict.type_term_from_str(tn).unwrap()))?
|
2021-05-10 01:57:47 +02:00
|
|
|
.get_port()
|
|
|
|
}
|
|
|
|
|
|
|
|
pub fn insert_repr<'a>(
|
|
|
|
&mut self,
|
|
|
|
name: &str,
|
|
|
|
type_ladder: impl Iterator<Item = &'a str>,
|
2021-11-19 12:19:52 +01:00
|
|
|
port: AnyOuterViewPort,
|
2021-05-10 01:57:47 +02:00
|
|
|
) {
|
2021-11-19 12:19:52 +01:00
|
|
|
self.get_obj(&name.to_string())
|
|
|
|
.unwrap()
|
|
|
|
.repr
|
|
|
|
.write()
|
|
|
|
.unwrap()
|
2021-05-10 01:57:47 +02:00
|
|
|
.insert_leaf(
|
|
|
|
type_ladder.map(|tn| self.type_dict.type_term_from_str(tn).unwrap()),
|
2021-11-19 12:19:52 +01:00
|
|
|
port,
|
2021-05-10 01:57:47 +02:00
|
|
|
);
|
|
|
|
}
|
|
|
|
|
2021-11-19 12:19:52 +01:00
|
|
|
pub fn epi_cast(&mut self, name: &str, typename: &str) {
|
2021-05-10 01:57:47 +02:00
|
|
|
let dst_type = self.type_dict.type_term_from_str(typename).unwrap();
|
2021-05-13 16:22:30 +02:00
|
|
|
let old_obj = self.objects.get(&name.to_string()).unwrap().clone();
|
2021-11-19 12:19:52 +01:00
|
|
|
let new_obj = if let Some(ctor) = self.morphism_constructors.get(&MorphismType {
|
|
|
|
mode: MorphismMode::Epi,
|
|
|
|
src_type: old_obj.type_tag.clone(),
|
|
|
|
dst_type: dst_type.clone(),
|
|
|
|
}) {
|
|
|
|
ctor(old_obj.clone())
|
|
|
|
} else {
|
2022-11-18 00:21:29 +01:00
|
|
|
Arc::new(RwLock::new(ReprTree::new(dst_type)))
|
2021-11-19 12:19:52 +01:00
|
|
|
};
|
2021-04-30 03:49:53 +02:00
|
|
|
|
2021-11-19 12:19:52 +01:00
|
|
|
new_obj
|
|
|
|
.repr
|
|
|
|
.write()
|
|
|
|
.unwrap()
|
|
|
|
.insert_branch(old_obj.type_tag, old_obj.repr);
|
2021-05-10 01:57:47 +02:00
|
|
|
|
|
|
|
self.objects.insert(name.to_string(), new_obj);
|
|
|
|
}
|
|
|
|
|
|
|
|
pub fn mono_view<'a, V: View + ?Sized + 'static>(
|
|
|
|
&mut self,
|
|
|
|
name: &str,
|
2021-11-19 12:19:52 +01:00
|
|
|
type_ladder: impl Iterator<Item = &'a str>,
|
2021-05-22 01:33:58 +02:00
|
|
|
) -> Option<OuterViewPort<V>>
|
2021-11-19 12:19:52 +01:00
|
|
|
where
|
|
|
|
V::Msg: Clone,
|
|
|
|
{
|
2021-05-10 01:57:47 +02:00
|
|
|
if let Some(p) = self.get_obj_port(name, type_ladder) {
|
|
|
|
Some(p)
|
|
|
|
} else {
|
|
|
|
// todo : add repr with morphism constructor (if one exists)
|
|
|
|
/*
|
|
|
|
if let Some(ctor) = self.morphism_constructors.get(
|
|
|
|
&MorphismType {
|
|
|
|
mode: MorphismMode::Mono,
|
|
|
|
src_type: old_obj.type_tag.clone(),
|
2021-11-19 12:19:52 +01:00
|
|
|
dst_type:
|
2021-05-10 01:57:47 +02:00
|
|
|
}
|
|
|
|
)
|
|
|
|
*/
|
|
|
|
None
|
|
|
|
}
|
2022-11-18 00:21:29 +01:00
|
|
|
}
|
|
|
|
*/
|
2021-04-30 03:49:53 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
//<<<<>>>><<>><><<>><<<*>>><<>><><<>><<<<>>>>
|