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-rw-r--r--Cargo.lock3
-rw-r--r--Cargo.toml1
-rw-r--r--crates/elfmacros/Cargo.toml4
-rw-r--r--crates/elfmacros/src/lib.rs182
-rw-r--r--crates/elfmind/Cargo.toml1
-rw-r--r--crates/elfmind/src/character.rs21
-rw-r--r--crates/elfmind/src/item.rs6
-rw-r--r--crates/elfmind/src/knowledge.rs187
-rw-r--r--crates/elfmind/src/knowledge/relation.rs243
-rw-r--r--crates/elfmind/src/knowledge/traits.rs273
-rw-r--r--crates/elfmind/src/lib.rs8
-rw-r--r--crates/elfmind/src/main.rs49
-rw-r--r--crates/elfmind/src/noun.rs19
-rw-r--r--crates/elfmind/src/noun/character.rs41
-rw-r--r--crates/elfmind/src/noun/item.rs20
-rw-r--r--crates/elfmind/src/noun/time.rs16
-rw-r--r--crates/elfmind/src/time.rs1
17 files changed, 680 insertions, 395 deletions
diff --git a/Cargo.lock b/Cargo.lock
index e1b26e9..581c0b7 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -772,6 +772,8 @@ checksum = "252afb9ae5eaa683babdc6a068b3f5726eb19e05070c731f9b2a23a7c3e8ed34"
name = "elfmacros"
version = "0.1.0"
dependencies = [
+ "itertools 0.15.0",
+ "proc-macro2",
"quote",
"syn 3.0.5",
]
@@ -784,6 +786,7 @@ dependencies = [
"bincode",
"bitflags 2.13.1",
"clap",
+ "elfmacros",
"enum-map",
"itertools 0.15.0",
"lazy_static",
diff --git a/Cargo.toml b/Cargo.toml
index 83d51da..1e8bb8d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -41,6 +41,7 @@ enum-map = { version = "2.7.3", features = ["serde"] } # enum map
serde = { version = "1.0.228", features = ["derive"] } # serialization
bincode = { version = "2.0.1", features = ["serde"] } # binary serialization
itertools = "0.15.0" # iterator tools
+proc-macro2 = "1.0.107"
syn = "3.0.5" # parser for proc macros
quote = "1.0.47" # quasiquotation for proc macros
smallbox = { version = "0.8.8", features = ["coerce"] } # store small objects inline, large ones on the heap
diff --git a/crates/elfmacros/Cargo.toml b/crates/elfmacros/Cargo.toml
index 9c97e8d..e286820 100644
--- a/crates/elfmacros/Cargo.toml
+++ b/crates/elfmacros/Cargo.toml
@@ -8,5 +8,7 @@ authors.workspace = true
proc-macro = true
[dependencies]
+proc-macro2 = { workspace = true }
syn = { workspace = true }
-quote = { workspace = true } \ No newline at end of file
+quote = { workspace = true }
+itertools = { workspace = true } \ No newline at end of file
diff --git a/crates/elfmacros/src/lib.rs b/crates/elfmacros/src/lib.rs
index e69de29..e7f05a2 100644
--- a/crates/elfmacros/src/lib.rs
+++ b/crates/elfmacros/src/lib.rs
@@ -0,0 +1,182 @@
+use proc_macro2::TokenStream;
+use quote::{quote, TokenStreamExt};
+
+fn title_to_kebab_case(s: &str) -> String {
+ let mut ret = String::new();
+ let mut start = 0;
+ for (end, _) in s.match_indices(|c: char| c.is_ascii_uppercase()) {
+ if start != end {
+ ret.push_str(&s[start..end].to_ascii_lowercase());
+ ret.push_str("-");
+ }
+ start = end;
+ }
+ ret.push_str(&s[start..].to_ascii_lowercase());
+ // s.split_inclusive(|c: char| c.is_ascii_uppercase())
+ // .map(|s| s.to_ascii_lowercase())
+ // .join("-")
+ ret
+}
+
+#[proc_macro_derive(Unifiable)]
+pub fn derive_unifiable(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
+ let input = syn::parse_macro_input!(input as syn::DeriveInput);
+ let name = input.ident;
+ let en = if let syn::Data::Enum(e) = &input.data { e } else {
+ return proc_macro::TokenStream::from(quote! { compile_error!("can only derive unifiable for an enum"); })
+ };
+ let mut cases = TokenStream::new();
+ for v in en.variants.iter() {
+ let vnm = &v.ident;
+ cases.append_all(
+ quote! {
+ (Self :: #vnm (a), Self::Concrete:: #vnm (b) ) => a.unify(b, u),
+ },
+ );
+ }
+ let expanded = quote! {
+ impl crate::knowledge::Unifiable for #name {
+ fn unify(&self, other: &Self::Concrete, u: crate::knowledge::Unification) -> Option<crate::knowledge::Unification> {
+ match (self, other) {
+ #cases
+ _ => None,
+ }
+ }
+ }
+ };
+ proc_macro::TokenStream::from(expanded)
+}
+
+#[proc_macro_derive(Substitutable)]
+pub fn derive_substitutable(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
+ let input = syn::parse_macro_input!(input as syn::DeriveInput);
+ let name = input.ident;
+ let en = if let syn::Data::Enum(e) = &input.data { e } else {
+ return proc_macro::TokenStream::from(quote! { compile_error!("can only derive substitutable for an enum"); })
+ };
+ let mut subcases = TokenStream::new();
+ let mut mvcases = TokenStream::new();
+ for v in en.variants.iter() {
+ let vnm = &v.ident;
+ subcases.append_all(
+ quote! {
+ Self :: #vnm (x) => Self :: #vnm (x.substitute(u)),
+ },
+ );
+ mvcases.append_all(
+ quote! {
+ Self :: #vnm (x) => Self :: #vnm (x.map_variables(f)),
+ },
+ );
+ }
+ let expanded = quote! {
+ impl crate::knowledge::Substitutable for #name {
+ fn substitute(&self, u: &crate::knowledge::Unification) -> Self {
+ match self {
+ #subcases
+ }
+ }
+ fn map_variables<F>(&self, f: &mut F) -> Self where F: FnMut(crate::knowledge::Var) -> Var {
+ match self {
+ #mvcases
+ }
+ }
+ }
+ };
+ proc_macro::TokenStream::from(expanded)
+}
+
+#[proc_macro_derive(Concrete)]
+pub fn derive_concrete(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
+ let input = syn::parse_macro_input!(input as syn::DeriveInput);
+ let name = input.ident;
+ let en = if let syn::Data::Enum(e) = &input.data { e } else {
+ return proc_macro::TokenStream::from(quote! { compile_error!("can only derive concretizable for an enum"); })
+ };
+ let hnm = syn::Ident::new(&format!("{}Hole", name), name.span());
+ let dnm = syn::Ident::new(&format!("{}Discriminants", name), name.span());
+ let mut cases = TokenStream::new();
+ let mut dcases = TokenStream::new();
+ let mut dispcases = TokenStream::new();
+ let mut variants = TokenStream::new();
+ for v in en.variants.iter() {
+ let vnm = &v.ident;
+ let kebab = title_to_kebab_case(&vnm.to_string());
+ let mut vtypes = TokenStream::new();
+ let mut tuple = false;
+ if let syn::Fields::Unnamed(fu) = &v.fields {
+ for f in fu.unnamed.iter() {
+ if let syn::Type::Tuple(tu) = &f.ty {
+ tuple = true;
+ for tty in tu.elems.iter() {
+ vtypes.append_all(quote! {
+ crate::knowledge::Hole < #tty > ,
+ });
+ }
+ } else {
+ let vty = &f.ty;
+ vtypes.append_all(quote! {
+ crate::knowledge::Hole < #vty > ,
+ });
+ }
+ }
+ }
+ if tuple {
+ variants.append_all(quote! {
+ #vnm (( #vtypes )) ,
+ });
+ } else {
+ variants.append_all(quote! {
+ #vnm ( #vtypes ) ,
+ });
+ }
+ cases.append_all(quote! {
+ Self :: #vnm (a) => Some( #name :: #vnm ( a.concretize()? )) ,
+ });
+ dcases.append_all(quote! {
+ Self :: #vnm {..} => #dnm :: #vnm ,
+ });
+ dispcases.append_all(
+ quote! {
+ Self :: #vnm (x) => { write!(f, "{}", #kebab)?; x.display_tuple(f) },
+ },
+ );
+ }
+ let expanded = quote! {
+ #[derive(Debug, Clone, PartialEq, Eq, Hash, elfmacros::Unifiable, elfmacros::Substitutable)]
+ pub enum #hnm {
+ #variants
+ }
+ impl crate::knowledge::Concretizable for #hnm {
+ type Concrete = #name;
+ fn concretize(&self) -> Option<Self::Concrete> {
+ match self {
+ #cases
+ _ => None,
+ }
+ }
+ }
+ impl #hnm {
+ pub fn discriminant(&self) -> #dnm {
+ match self {
+ #dcases
+ }
+ }
+ }
+ impl std::fmt::Display for #hnm {
+ fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+ match self {
+ #dispcases
+ }
+ }
+ }
+ impl std::fmt::Display for #name {
+ fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+ match self {
+ #dispcases
+ }
+ }
+ }
+ };
+ proc_macro::TokenStream::from(expanded)
+}
diff --git a/crates/elfmind/Cargo.toml b/crates/elfmind/Cargo.toml
index 982623d..73d4712 100644
--- a/crates/elfmind/Cargo.toml
+++ b/crates/elfmind/Cargo.toml
@@ -12,6 +12,7 @@ name = "elfmind"
path = "src/main.rs"
[dependencies]
+elfmacros = { path = "../elfmacros" }
teleia = { workspace = true }
teleia_macros = { workspace = true }
bitflags = { workspace = true }
diff --git a/crates/elfmind/src/character.rs b/crates/elfmind/src/character.rs
deleted file mode 100644
index bb50605..0000000
--- a/crates/elfmind/src/character.rs
+++ /dev/null
@@ -1,21 +0,0 @@
-#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]
-pub enum Character {
- Clonk,
- Naesten,
- Jonze,
- Bobo,
- Frogrilla,
- Hynzzy,
- Orbital,
- Colin,
- Meisaka,
- Ctrl,
- Antlers,
- Tyumici,
- Steeledshield,
- Creep,
- Max,
- Hostile,
- Owlex,
- Penguin,
-}
diff --git a/crates/elfmind/src/item.rs b/crates/elfmind/src/item.rs
deleted file mode 100644
index 5b9182d..0000000
--- a/crates/elfmind/src/item.rs
+++ /dev/null
@@ -1,6 +0,0 @@
-#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]
-pub enum Item {
- Apple,
- BallroomKey,
- Lumi,
-}
diff --git a/crates/elfmind/src/knowledge.rs b/crates/elfmind/src/knowledge.rs
index a610328..97ff118 100644
--- a/crates/elfmind/src/knowledge.rs
+++ b/crates/elfmind/src/knowledge.rs
@@ -1,86 +1,45 @@
-pub mod relation;
-pub use relation::*;
+pub mod traits; pub use traits::*;
+pub mod relation; pub use relation::*;
-use crate::time::*;
-use crate::item::*;
-use crate::character::*;
+pub use crate::noun::*;
use std::collections::{HashMap, HashSet};
+use std::fmt::Display;
use itertools::Itertools;
+use strum::IntoDiscriminant;
use enum_map::EnumMap;
-use strum::IntoDiscriminant;
#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]
-pub struct Var { index: u64 }
-
-#[derive(Debug, Clone, Copy, PartialEq, Eq)]
-pub enum Value {
- Var(Var),
- Item(Item),
- Character(Character),
- Time(Time),
-}
-impl From<Var> for Value { fn from(x: Var) -> Self {Value::Var(x)} }
-impl From<Item> for Value { fn from(x: Item) -> Self {Value::Item(x)} }
-impl From<Character> for Value { fn from(x: Character) -> Self {Value::Character(x)} }
-impl From<Time> for Value { fn from(x: Time) -> Self {Value::Time(x)} }
-impl TryFrom<Value> for Var {
- type Error = ();
- fn try_from(v: Value) -> Result<Self, Self::Error> {
- if let Value::Var(x) = v { Ok(x) } else { Err(()) }
- }
-}
-impl TryFrom<Value> for Item {
- type Error = ();
- fn try_from(v: Value) -> Result<Self, Self::Error> {
- if let Value::Item(x) = v { Ok(x) } else { Err(()) }
- }
-}
-impl TryFrom<Value> for Character {
- type Error = ();
- fn try_from(v: Value) -> Result<Self, Self::Error> {
- if let Value::Character(x) = v { Ok(x) } else { Err(()) }
- }
-}
-impl TryFrom<Value> for Time {
- type Error = ();
- fn try_from(v: Value) -> Result<Self, Self::Error> {
- if let Value::Time(x) = v { Ok(x) } else { Err(()) }
+pub struct Var(pub u64);
+impl Display for Var {
+ fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+ write!(f, "v{}", self.0)
}
}
#[derive(Debug, Default)]
pub struct Unification {
- assignment: HashMap<Var, Value>,
+ assignment: HashMap<Var, Noun>,
}
impl Unification {
- pub fn lookup(&self, v: &Var) -> Option<Value> {
+ pub fn lookup(&self, v: &Var) -> Option<Noun> {
self.assignment.get(v).cloned()
}
- pub fn add(&mut self, v: Var, x: impl Into<Value>) -> bool {
+ pub fn add(&mut self, v: Var, x: impl Into<Noun>) -> bool {
let y = x.into();
if let Some(old) = self.assignment.get(&v) {
- if let Value::Var(v2) = y {
- self.add(v2, *old)
- } else if let Value::Var(v2) = old {
- self.add(*v2, y)
- } else {
- *old == y
- }
+ *old == y
} else {
self.assignment.insert(v, y);
true
}
}
- pub fn unify_hole<A, B>(&mut self, h1: &Hole<A>, h2: &Hole<B>) -> bool
- where Value: From<A>, Value: From<B>, A: Copy, B: Copy {
- match (h1, h2) {
- (Hole::Var(v1), Hole::Var(v2)) =>
- self.add(*v1, *v2) && self.add(*v2, *v1),
- (Hole::Val(x1), Hole::Val(x2)) => Value::from(*x1) == Value::from(*x2),
- (Hole::Var(v1), Hole::Val(x2)) => self.add(*v1, *x2),
- (Hole::Val(x1), Hole::Var(v2)) => self.add(*v2, *x1),
+ pub fn unify_hole<A, B>(&mut self, h1: &Hole<A>, x2: &B) -> bool
+ where Noun: From<A>, Noun: From<B>, A: Copy, B: Copy {
+ match h1 {
+ Hole::Val(x1) => Noun::from(*x1) == Noun::from(*x2),
+ Hole::Var(v1) => self.add(*v1, *x2),
}
}
}
@@ -90,7 +49,20 @@ pub enum Hole<T> {
Var(Var),
Val(T),
}
-impl<T: Clone + TryFrom<Value>> Hole<T> {
+impl<T: std::fmt::Debug> Display for Hole<T> {
+ fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+ match self {
+ Self::Var(v) => v.fmt(f),
+ Self::Val(x) => write!(f, "{:?}", x),
+ }
+ }
+}
+impl<A: std::fmt::Debug> DisplayNoun for Hole<A> {
+ fn display_noun(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+ write!(f, "{}", self)
+ }
+}
+impl<T: Clone + TryFrom<Noun>> Hole<T> {
pub fn substitute(&self, u: &Unification) -> Self {
match self {
x@Self::Var(v) => if let Some(y) = u.lookup(v) && let Ok(z) = T::try_from(y) {
@@ -105,8 +77,22 @@ impl<T: Clone + TryFrom<Value>> Hole<T> {
#[derive(Debug, Clone)]
pub struct Rule {
- pub head: Relation,
- pub body: Vec<Relation>,
+ pub head: RelationHole,
+ pub body: Vec<RelationHole>,
+}
+impl Display for Rule {
+ fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+ write!(f, "{} :- ", self.head)?;
+ #[allow(unstable_name_collisions)]
+ for mb in self.body.iter().map(Some).intersperse(None) {
+ if let Some(b) = mb {
+ write!(f, "{}", b)?;
+ } else {
+ write!(f, ", ")?;
+ }
+ }
+ std::fmt::Result::Ok(())
+ }
}
impl Rule {
pub fn unify_body(&self, facts: &[&Relation]) -> Option<Unification> {
@@ -117,12 +103,40 @@ impl Rule {
}
Some(u)
}
+ pub fn canonize(&mut self, mut next: u64) -> u64 {
+ let mut remap = HashMap::new();
+ let mut f = |v| {
+ if let Some(new) = remap.get(&v) {
+ *new
+ } else {
+ let new = Var(next);
+ next += 1;
+ remap.insert(v, new);
+ new
+ }
+ };
+ self.head = self.head.map_variables(&mut f);
+ for b in self.body.iter_mut() {
+ *b = b.map_variables(&mut f);
+ }
+ next
+ }
}
#[derive(Debug, Default, Clone)]
pub struct Facts {
facts: EnumMap<RelationDiscriminants, HashSet<Relation>>,
}
+impl Display for Facts {
+ fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+ for (_, s) in self.facts.iter() {
+ for r in s.iter() {
+ write!(f, "{}.\n", r)?;
+ }
+ }
+ std::fmt::Result::Ok(())
+ }
+}
impl Facts {
pub fn add(&mut self, f: Relation) -> bool {
self.facts[f.discriminant()].insert(f)
@@ -148,6 +162,15 @@ pub struct Database {
facts: Facts,
rules: Vec<Rule>,
}
+impl Display for Database {
+ fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+ write!(f, "{}", self.facts)?;
+ for r in self.rules.iter() {
+ write!(f, "{}.\n", r)?;
+ }
+ std::fmt::Result::Ok(())
+ }
+}
impl Database {
pub fn is_known(&self, r: &Relation) -> bool { self.facts.contains(r) }
pub fn query<'a>(&'a mut self) -> Query<'a> {
@@ -176,16 +199,6 @@ impl<'a> Query<'a> {
fn apply_rule(&self, r: &Rule, new_facts: &mut Facts, required_facts: QueryFactsToConsider) -> bool {
// we don't need to consider every possible fact against each body term (naive evaluation)
// instead, we can limit ourselves to the subset where at least one of the facts is new (semi-naive)
- // let found: Vec<Unification> = r.body.iter()
- // .map(|r| {
- // let d = r.discriminant();
- // new_facts.with_sort(d).iter()
- // .chain(self.facts.with_sort(d).iter())
- // .chain(self.db.facts.with_sort(d).iter())
- // })
- // .multi_cartesian_product()
- // .filter_map(|fs| r.unify_body(&fs))
- // .collect();
let mut found = Vec::new();
// identify which slots of this rule body possibly have new facts to consider
let changed_slots = r.body.iter()
@@ -216,8 +229,7 @@ impl<'a> Query<'a> {
QueryFactsToConsider::Query if i == cs =>
self.facts.with_sort(d).iter().chain(empty.iter()),
// otherwise, consider all facts - a new fact might be used alongside an unchanged fact!
- _ =>
- self.facts.with_sort(d).iter().chain(self.db.facts.with_sort(d).iter()),
+ _ => self.facts.with_sort(d).iter().chain(self.db.facts.with_sort(d).iter()),
}
})
.multi_cartesian_product();
@@ -229,8 +241,10 @@ impl<'a> Query<'a> {
}
let mut changed = false;
for u in found {
- let new = r.head.substitute(&u);
- if new.is_concrete() && !self.facts.contains(&new) && !self.db.facts.contains(&new) {
+ if let Some(new) = r.head.substitute(&u).concretize()
+ && !self.facts.contains(&new)
+ && !self.db.facts.contains(&new)
+ {
if new_facts.add(new) { changed = true; }
}
}
@@ -259,7 +273,8 @@ impl<'a> Query<'a> {
}
self
}
- pub fn rule(mut self, r: Rule) -> Self {
+ pub fn rule(mut self, mut r: Rule) -> Self {
+ r.canonize(0);
self.rules.push(r);
self
}
@@ -286,21 +301,3 @@ impl<'a> Query<'a> {
self.db.rules.extend_from_slice(&mut self.rules);
}
}
-
-#[derive(Debug, Default)]
-pub struct Context {
- next_index: u64,
- var_names: HashMap<Var, String>,
-}
-impl Context {
- pub fn fresh(&mut self) -> Var {
- let ret = Var { index: self.next_index };
- self.next_index += 1;
- ret
- }
- pub fn var(&mut self, nm: &str) -> Var {
- let ret = self.fresh();
- self.var_names.insert(ret, nm.to_owned());
- ret
- }
-}
diff --git a/crates/elfmind/src/knowledge/relation.rs b/crates/elfmind/src/knowledge/relation.rs
index b738aa1..82c795d 100644
--- a/crates/elfmind/src/knowledge/relation.rs
+++ b/crates/elfmind/src/knowledge/relation.rs
@@ -1,243 +1,14 @@
-use super::{Value, Hole, Unification};
-
-use crate::time::*;
-use crate::item::*;
-use crate::character::*;
+use crate::knowledge::*;
+use crate::noun::*;
use enum_map::Enum;
use strum::EnumDiscriminants;
-pub trait Concretizable {
- type Concrete;
- fn concretize(&self) -> Option<Self::Concrete>;
-}
-impl<A: Clone> Concretizable for Hole<A> {
- type Concrete = A;
- fn concretize(&self) -> Option<Self::Concrete> {
- match self {
- Self::Val(x) => Some(x.clone()),
- _ => None,
- }
- }
-}
-impl<
- A: Clone,
- B: Clone,
- > Concretizable for (Hole<A>, Hole<B>) {
- type Concrete = (A, B);
- fn concretize(&self) -> Option<Self::Concrete> {
- let a = self.0.concretize()?;
- let b = self.1.concretize()?;
- Some((a, b))
- }
-}
-impl<
- A: Clone,
- B: Clone,
- C: Clone,
- > Concretizable for (Hole<A>, Hole<B>, Hole<C>) {
- type Concrete = (A, B, C);
- fn concretize(&self) -> Option<Self::Concrete> {
- let a = self.0.concretize()?;
- let b = self.1.concretize()?;
- let c = self.2.concretize()?;
- Some((a, b, c))
- }
-}
-impl<
- A: Clone,
- B: Clone,
- C: Clone,
- D: Clone,
- > Concretizable for (Hole<A>, Hole<B>, Hole<C>, Hole<D>) {
- type Concrete = (A, B, C, D);
- fn concretize(&self) -> Option<Self::Concrete> {
- let a = self.0.concretize()?;
- let b = self.1.concretize()?;
- let c = self.2.concretize()?;
- let d = self.3.concretize()?;
- Some((a, b, c, d))
- }
-}
-impl<
- A: Clone,
- B: Clone,
- C: Clone,
- D: Clone,
- E: Clone,
- > Concretizable for (Hole<A>, Hole<B>, Hole<C>, Hole<D>, Hole<E>) {
- type Concrete = (A, B, C, D, E);
- fn concretize(&self) -> Option<Self::Concrete> {
- let a = self.0.concretize()?;
- let b = self.1.concretize()?;
- let c = self.2.concretize()?;
- let d = self.3.concretize()?;
- let e = self.4.concretize()?;
- Some((a, b, c, d, e))
- }
-}
-
-pub trait Substitutable {
- fn substitute(&self, u: &Unification) -> Self;
-}
-impl<A: Clone + TryFrom<Value>> Substitutable for Hole<A> {
- fn substitute(&self, u: &Unification) -> Self {
- match self {
- x@Self::Var(v) => if let Some(y) = u.lookup(v) && let Ok(z) = A::try_from(y) {
- Hole::Val(z)
- } else {
- x.clone()
- }
- x => x.clone(),
- }
- }
-}
-impl<
- A: Clone + TryFrom<Value>,
- B: Clone + TryFrom<Value>
- > Substitutable for (Hole<A>, Hole<B>) {
- fn substitute(&self, u: &Unification) -> Self {
- let (a, b) = self;
- (a.substitute(u), b.substitute(u))
- }
-}
-impl<
- A: Clone + TryFrom<Value>,
- B: Clone + TryFrom<Value>,
- C: Clone + TryFrom<Value>,
- > Substitutable for (Hole<A>, Hole<B>, Hole<C>) {
- fn substitute(&self, u: &Unification) -> Self {
- let (a, b, c) = self;
- (a.substitute(u), b.substitute(u), c.substitute(u))
- }
-}
-impl<
- A: Clone + TryFrom<Value>,
- B: Clone + TryFrom<Value>,
- C: Clone + TryFrom<Value>,
- D: Clone + TryFrom<Value>,
- > Substitutable for (Hole<A>, Hole<B>, Hole<C>, Hole<D>) {
- fn substitute(&self, u: &Unification) -> Self {
- let (a, b, c, d) = self;
- (a.substitute(u), b.substitute(u), c.substitute(u), d.substitute(u))
- }
-}
-impl<
- A: Clone + TryFrom<Value>,
- B: Clone + TryFrom<Value>,
- C: Clone + TryFrom<Value>,
- D: Clone + TryFrom<Value>,
- E: Clone + TryFrom<Value>,
- > Substitutable for (Hole<A>, Hole<B>, Hole<C>, Hole<D>, Hole<E>) {
- fn substitute(&self, u: &Unification) -> Self {
- let (a, b, c, d, e) = self;
- (a.substitute(u), b.substitute(u), c.substitute(u), d.substitute(u), e.substitute(u))
- }
-}
-
-pub trait Unifiable {
- fn unify(&self, other: &Self, u: Unification) -> Option<Unification>;
-}
-impl<A> Unifiable for Hole<A> where
- Value: From<A>, A: Copy,
-{
- fn unify(&self, other: &Self, mut u: Unification) -> Option<Unification> {
- if u.unify_hole(self, other) {
- Some(u)
- } else { None }
- }
-}
-impl<A, B> Unifiable for (Hole<A>, Hole<B>) where
- Value: From<A>, A: Copy,
- Value: From<B>, B: Copy,
-{
- fn unify(&self, other: &Self, mut u: Unification) -> Option<Unification> {
- let (a1, b1) = self;
- let (a2, b2) = other;
- if u.unify_hole(a1, a2) && u.unify_hole(b1, b2) {
- Some(u)
- } else { None }
- }
-}
-impl<A, B, C> Unifiable for (Hole<A>, Hole<B>, Hole<C>) where
- Value: From<A>, A: Copy,
- Value: From<B>, B: Copy,
- Value: From<C>, C: Copy,
-{
- fn unify(&self, other: &Self, mut u: Unification) -> Option<Unification> {
- let (a1, b1, c1) = self;
- let (a2, b2, c2) = other;
- if u.unify_hole(a1, a2) && u.unify_hole(b1, b2) && u.unify_hole(c1, c2) {
- Some(u)
- } else { None }
- }
-}
-impl<A, B, C, D> Unifiable for (Hole<A>, Hole<B>, Hole<C>, Hole<D>) where
- Value: From<A>, A: Copy,
- Value: From<B>, B: Copy,
- Value: From<C>, C: Copy,
- Value: From<D>, D: Copy,
-{
- fn unify(&self, other: &Self, mut u: Unification) -> Option<Unification> {
- let (a1, b1, c1, d1) = self;
- let (a2, b2, c2, d2) = other;
- if u.unify_hole(a1, a2) && u.unify_hole(b1, b2) && u.unify_hole(c1, c2) && u.unify_hole(d1, d2) {
- Some(u)
- } else { None }
- }
-}
-impl<A, B, C, D, E> Unifiable for (Hole<A>, Hole<B>, Hole<C>, Hole<D>, Hole<E>) where
- Value: From<A>, A: Copy,
- Value: From<B>, B: Copy,
- Value: From<C>, C: Copy,
- Value: From<D>, D: Copy,
- Value: From<E>, E: Copy,
-{
- fn unify(&self, other: &Self, mut u: Unification) -> Option<Unification> {
- let (a1, b1, c1, d1, e1) = self;
- let (a2, b2, c2, d2, e2) = other;
- if u.unify_hole(a1, a2) && u.unify_hole(b1, b2) && u.unify_hole(c1, c2) && u.unify_hole(d1, d2) && u.unify_hole(e1, e2) {
- Some(u)
- } else { None }
- }
-}
-
-#[derive(Debug, Clone, PartialEq, Eq, Hash, EnumDiscriminants)]
+#[derive(Debug, Clone, PartialEq, Eq, Hash, EnumDiscriminants, elfmacros::Concrete)]
#[strum_discriminants(derive(Enum))]
pub enum Relation {
- HasItem((Hole<Character>, Hole<Item>)),
- UsedItemAt((Hole<Character>, Hole<Item>, Hole<Time>)),
- TimeIs(Hole<Time>),
- FriendOf((Hole<Character>, Hole<Character>)),
-}
-impl Relation {
- pub fn is_concrete(&self) -> bool {
- match self {
- Self::HasItem(x) => x.concretize().is_some(),
- Self::UsedItemAt(x) => x.concretize().is_some(),
- Self::TimeIs(x) => x.concretize().is_some(),
- Self::FriendOf(x) => x.concretize().is_some(),
- }
- }
-}
-impl Substitutable for Relation {
- fn substitute(&self, u: &Unification) -> Self {
- match self {
- Self::HasItem(x) => Self::HasItem(x.substitute(u)),
- Self::UsedItemAt(x) => Self::UsedItemAt(x.substitute(u)),
- Self::TimeIs(x) => Self::TimeIs(x.substitute(u)),
- Self::FriendOf(x) => Self::FriendOf(x.substitute(u)),
- }
- }
-}
-impl Unifiable for Relation {
- fn unify(&self, other: &Self, u: Unification) -> Option<Unification> {
- match (self, other) {
- (Self::HasItem(a), Self::HasItem(b)) => a.unify(b, u),
- (Self::UsedItemAt(a), Self::UsedItemAt(b)) => a.unify(b, u),
- (Self::TimeIs(a), Self::TimeIs(b)) => a.unify(b, u),
- (Self::FriendOf(a), Self::FriendOf(b)) => a.unify(b, u),
- _ => None,
- }
- }
+ HasItem((CharacterUnmasked, Item)),
+ UsedItemAt((CharacterUnmasked, Item, Time)),
+ TimeIs(Time),
+ FriendOf((CharacterUnmasked, CharacterUnmasked)),
}
diff --git a/crates/elfmind/src/knowledge/traits.rs b/crates/elfmind/src/knowledge/traits.rs
new file mode 100644
index 0000000..6db9250
--- /dev/null
+++ b/crates/elfmind/src/knowledge/traits.rs
@@ -0,0 +1,273 @@
+use crate::knowledge::*;
+
+pub trait DisplayNoun {
+ fn display_noun(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result;
+}
+
+pub trait DisplayTuple {
+ fn display_tuple(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result;
+}
+impl<A: DisplayNoun> DisplayTuple for A {
+ // display any single noun as a 1-tuple
+ fn display_tuple(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+ write!(f, "(")?;
+ self.display_noun(f)?;
+ write!(f, ")")
+ }
+}
+impl<A: DisplayNoun, B: DisplayNoun> DisplayTuple for (A, B) {
+ fn display_tuple(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+ write!(f, "(")?;
+ self.0.display_noun(f)?; write!(f, ", ")?;
+ self.1.display_noun(f)?;
+ write!(f, ")")
+ }
+}
+impl<A: DisplayNoun, B: DisplayNoun, C: DisplayNoun> DisplayTuple for (A, B, C) {
+ fn display_tuple(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+ write!(f, "(")?;
+ self.0.display_noun(f)?; write!(f, ", ")?;
+ self.1.display_noun(f)?; write!(f, ", ")?;
+ self.2.display_noun(f)?;
+ write!(f, ")")
+ }
+}
+impl<A: DisplayNoun, B: DisplayNoun, C: DisplayNoun, D: DisplayNoun> DisplayTuple for (A, B, C, D) {
+ fn display_tuple(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+ write!(f, "(")?;
+ self.0.display_noun(f)?; write!(f, ", ")?;
+ self.1.display_noun(f)?; write!(f, ", ")?;
+ self.2.display_noun(f)?; write!(f, ", ")?;
+ self.3.display_noun(f)?;
+ write!(f, ")")
+ }
+}
+impl<A: DisplayNoun, B: DisplayNoun, C: DisplayNoun, D: DisplayNoun, E: DisplayNoun> DisplayTuple for (A, B, C, D, E) {
+ fn display_tuple(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+ write!(f, "(")?;
+ self.0.display_noun(f)?; write!(f, ", ")?;
+ self.1.display_noun(f)?; write!(f, ", ")?;
+ self.2.display_noun(f)?; write!(f, ", ")?;
+ self.3.display_noun(f)?; write!(f, ", ")?;
+ self.4.display_noun(f)?;
+ write!(f, ")")
+ }
+}
+
+pub trait Concretizable {
+ type Concrete;
+ fn concretize(&self) -> Option<Self::Concrete>;
+}
+impl<A: Clone> Concretizable for Hole<A> {
+ type Concrete = A;
+ fn concretize(&self) -> Option<Self::Concrete> {
+ match self {
+ Self::Val(x) => Some(x.clone()),
+ _ => None,
+ }
+ }
+}
+impl<
+ A: Clone,
+ B: Clone,
+ > Concretizable for (Hole<A>, Hole<B>) {
+ type Concrete = (A, B);
+ fn concretize(&self) -> Option<Self::Concrete> {
+ let a = self.0.concretize()?;
+ let b = self.1.concretize()?;
+ Some((a, b))
+ }
+}
+impl<
+ A: Clone,
+ B: Clone,
+ C: Clone,
+ > Concretizable for (Hole<A>, Hole<B>, Hole<C>) {
+ type Concrete = (A, B, C);
+ fn concretize(&self) -> Option<Self::Concrete> {
+ let a = self.0.concretize()?;
+ let b = self.1.concretize()?;
+ let c = self.2.concretize()?;
+ Some((a, b, c))
+ }
+}
+impl<
+ A: Clone,
+ B: Clone,
+ C: Clone,
+ D: Clone,
+ > Concretizable for (Hole<A>, Hole<B>, Hole<C>, Hole<D>) {
+ type Concrete = (A, B, C, D);
+ fn concretize(&self) -> Option<Self::Concrete> {
+ let a = self.0.concretize()?;
+ let b = self.1.concretize()?;
+ let c = self.2.concretize()?;
+ let d = self.3.concretize()?;
+ Some((a, b, c, d))
+ }
+}
+impl<
+ A: Clone,
+ B: Clone,
+ C: Clone,
+ D: Clone,
+ E: Clone,
+ > Concretizable for (Hole<A>, Hole<B>, Hole<C>, Hole<D>, Hole<E>) {
+ type Concrete = (A, B, C, D, E);
+ fn concretize(&self) -> Option<Self::Concrete> {
+ let a = self.0.concretize()?;
+ let b = self.1.concretize()?;
+ let c = self.2.concretize()?;
+ let d = self.3.concretize()?;
+ let e = self.4.concretize()?;
+ Some((a, b, c, d, e))
+ }
+}
+
+pub trait Substitutable {
+ fn substitute(&self, u: &Unification) -> Self;
+ fn map_variables<F>(&self, f: &mut F) -> Self where F: FnMut(Var) -> Var;
+}
+impl<A: Clone + TryFrom<Noun>> Substitutable for Hole<A> {
+ fn substitute(&self, u: &Unification) -> Self {
+ match self {
+ x@Self::Var(v) => if let Some(y) = u.lookup(v) && let Ok(z) = A::try_from(y) {
+ Hole::Val(z)
+ } else {
+ x.clone()
+ }
+ x => x.clone(),
+ }
+ }
+ fn map_variables<F>(&self, f: &mut F) -> Self where F: FnMut(Var) -> Var {
+ match self {
+ Self::Var(v) => Self::Var(f(*v)),
+ x => x.clone(),
+ }
+ }
+}
+impl<
+ A: Clone + TryFrom<Noun>,
+ B: Clone + TryFrom<Noun>
+ > Substitutable for (Hole<A>, Hole<B>) {
+ fn substitute(&self, u: &Unification) -> Self {
+ let (a, b) = self;
+ (a.substitute(u), b.substitute(u))
+ }
+ fn map_variables<F>(&self, f: &mut F) -> Self where F: FnMut(Var) -> Var {
+ let (a, b) = self;
+ (a.map_variables(f), b.map_variables(f))
+ }
+}
+impl<
+ A: Clone + TryFrom<Noun>,
+ B: Clone + TryFrom<Noun>,
+ C: Clone + TryFrom<Noun>,
+ > Substitutable for (Hole<A>, Hole<B>, Hole<C>) {
+ fn substitute(&self, u: &Unification) -> Self {
+ let (a, b, c) = self;
+ (a.substitute(u), b.substitute(u), c.substitute(u))
+ }
+ fn map_variables<F>(&self, f: &mut F) -> Self where F: FnMut(Var) -> Var {
+ let (a, b, c) = self;
+ (a.map_variables(f), b.map_variables(f), c.map_variables(f))
+ }
+}
+impl<
+ A: Clone + TryFrom<Noun>,
+ B: Clone + TryFrom<Noun>,
+ C: Clone + TryFrom<Noun>,
+ D: Clone + TryFrom<Noun>,
+ > Substitutable for (Hole<A>, Hole<B>, Hole<C>, Hole<D>) {
+ fn substitute(&self, u: &Unification) -> Self {
+ let (a, b, c, d) = self;
+ (a.substitute(u), b.substitute(u), c.substitute(u), d.substitute(u))
+ }
+ fn map_variables<F>(&self, f: &mut F) -> Self where F: FnMut(Var) -> Var {
+ let (a, b, c, d) = self;
+ (a.map_variables(f), b.map_variables(f), c.map_variables(f), d.map_variables(f))
+ }
+}
+impl<
+ A: Clone + TryFrom<Noun>,
+ B: Clone + TryFrom<Noun>,
+ C: Clone + TryFrom<Noun>,
+ D: Clone + TryFrom<Noun>,
+ E: Clone + TryFrom<Noun>,
+ > Substitutable for (Hole<A>, Hole<B>, Hole<C>, Hole<D>, Hole<E>) {
+ fn substitute(&self, u: &Unification) -> Self {
+ let (a, b, c, d, e) = self;
+ (a.substitute(u), b.substitute(u), c.substitute(u), d.substitute(u), e.substitute(u))
+ }
+ fn map_variables<F>(&self, f: &mut F) -> Self where F: FnMut(Var) -> Var {
+ let (a, b, c, d, e) = self;
+ (a.map_variables(f), b.map_variables(f), c.map_variables(f), d.map_variables(f), e.map_variables(f))
+ }
+}
+
+pub trait Unifiable: Concretizable {
+ fn unify(&self, other: &Self::Concrete, u: Unification) -> Option<Unification>;
+}
+impl<A> Unifiable for Hole<A> where
+ Noun: From<A>, A: Copy,
+{
+ fn unify(&self, other: &Self::Concrete, mut u: Unification) -> Option<Unification> {
+ if u.unify_hole(self, other) {
+ Some(u)
+ } else { None }
+ }
+}
+impl<A, B> Unifiable for (Hole<A>, Hole<B>) where
+ Noun: From<A>, A: Copy,
+ Noun: From<B>, B: Copy,
+{
+ fn unify(&self, other: &Self::Concrete, mut u: Unification) -> Option<Unification> {
+ let (a1, b1) = self;
+ let (a2, b2) = other;
+ if u.unify_hole(a1, a2) && u.unify_hole(b1, b2) {
+ Some(u)
+ } else { None }
+ }
+}
+impl<A, B, C> Unifiable for (Hole<A>, Hole<B>, Hole<C>) where
+ Noun: From<A>, A: Copy,
+ Noun: From<B>, B: Copy,
+ Noun: From<C>, C: Copy,
+{
+ fn unify(&self, other: &Self::Concrete, mut u: Unification) -> Option<Unification> {
+ let (a1, b1, c1) = self;
+ let (a2, b2, c2) = other;
+ if u.unify_hole(a1, a2) && u.unify_hole(b1, b2) && u.unify_hole(c1, c2) {
+ Some(u)
+ } else { None }
+ }
+}
+impl<A, B, C, D> Unifiable for (Hole<A>, Hole<B>, Hole<C>, Hole<D>) where
+ Noun: From<A>, A: Copy,
+ Noun: From<B>, B: Copy,
+ Noun: From<C>, C: Copy,
+ Noun: From<D>, D: Copy,
+{
+ fn unify(&self, other: &Self::Concrete, mut u: Unification) -> Option<Unification> {
+ let (a1, b1, c1, d1) = self;
+ let (a2, b2, c2, d2) = other;
+ if u.unify_hole(a1, a2) && u.unify_hole(b1, b2) && u.unify_hole(c1, c2) && u.unify_hole(d1, d2) {
+ Some(u)
+ } else { None }
+ }
+}
+impl<A, B, C, D, E> Unifiable for (Hole<A>, Hole<B>, Hole<C>, Hole<D>, Hole<E>) where
+ Noun: From<A>, A: Copy,
+ Noun: From<B>, B: Copy,
+ Noun: From<C>, C: Copy,
+ Noun: From<D>, D: Copy,
+ Noun: From<E>, E: Copy,
+{
+ fn unify(&self, other: &Self::Concrete, mut u: Unification) -> Option<Unification> {
+ let (a1, b1, c1, d1, e1) = self;
+ let (a2, b2, c2, d2, e2) = other;
+ if u.unify_hole(a1, a2) && u.unify_hole(b1, b2) && u.unify_hole(c1, c2) && u.unify_hole(d1, d2) && u.unify_hole(e1, e2) {
+ Some(u)
+ } else { None }
+ }
+}
diff --git a/crates/elfmind/src/lib.rs b/crates/elfmind/src/lib.rs
index 30167b4..21fbab6 100644
--- a/crates/elfmind/src/lib.rs
+++ b/crates/elfmind/src/lib.rs
@@ -1,6 +1,2 @@
-pub mod time;
-pub mod item;
-pub mod knowledge;
-// pub mod gadget;
-pub mod character;
-// pub mod world;
+pub mod noun; pub use noun::*;
+pub mod knowledge; pub use knowledge::*;
diff --git a/crates/elfmind/src/main.rs b/crates/elfmind/src/main.rs
index 19b8a03..e4cd4cc 100644
--- a/crates/elfmind/src/main.rs
+++ b/crates/elfmind/src/main.rs
@@ -1,51 +1,42 @@
use elfmind::*;
-use knowledge::*;
fn main() {
- let mut ctx = Context::default();
let mut db = Database::default();
db.query()
- .fact(Relation::HasItem((Hole::Val(character::Character::Tyumici), Hole::Val(item::Item::Apple))))
- .fact(Relation::FriendOf((Hole::Val(character::Character::Bobo), Hole::Val(character::Character::Naesten))))
+ .fact(Relation::HasItem((CharacterUnmasked::Assagioli, Item::Apple)))
+ .fact(Relation::FriendOf((CharacterUnmasked::Bombieri, CharacterUnmasked::Cagliostro)))
.learn();
- let vt = ctx.var("time");
- let vi = ctx.var("item");
db.query().rule(Rule {
- head: Relation::UsedItemAt((
- Hole::Val(character::Character::Tyumici),
- Hole::Var(vi),
- Hole::Var(vt),
+ head: RelationHole::UsedItemAt((
+ Hole::Val(CharacterUnmasked::Assagioli),
+ Hole::Var(Var(0)),
+ Hole::Var(Var(1)),
)),
body: vec![
- Relation::TimeIs(Hole::Var(vt)),
- Relation::HasItem((Hole::Val(character::Character::Tyumici), Hole::Var(vi))),
+ RelationHole::TimeIs(Hole::Var(Var(1))),
+ RelationHole::HasItem((Hole::Val(CharacterUnmasked::Assagioli), Hole::Var(Var(0)))),
],
}).learn();
- let vt = ctx.var("time");
- let vc = ctx.var("char");
db.query().rule(Rule {
- head: Relation::FriendOf((
- Hole::Val(character::Character::Naesten),
- Hole::Var(vc),
+ head: RelationHole::FriendOf((
+ Hole::Val(CharacterUnmasked::Cagliostro),
+ Hole::Var(Var(0)),
)),
body: vec![
- Relation::TimeIs(Hole::Var(vt)),
- Relation::UsedItemAt((Hole::Var(vc), Hole::Val(item::Item::Apple), Hole::Var(vt))),
+ RelationHole::TimeIs(Hole::Var(Var(1))),
+ RelationHole::UsedItemAt((Hole::Var(Var(0)), Hole::Val(Item::Apple), Hole::Var(Var(1)))),
],
}).learn();
- let vc1 = ctx.var("char");
- let vc2 = ctx.var("char");
- let vc3 = ctx.var("char");
db.query().rule(Rule {
- head: Relation::FriendOf((
- Hole::Var(vc1),
- Hole::Var(vc3),
+ head: RelationHole::FriendOf((
+ Hole::Var(Var(0)),
+ Hole::Var(Var(2)),
)),
body: vec![
- Relation::FriendOf((Hole::Var(vc1), Hole::Var(vc2))),
- Relation::FriendOf((Hole::Var(vc2), Hole::Var(vc3))),
+ RelationHole::FriendOf((Hole::Var(Var(0)), Hole::Var(Var(1)))),
+ RelationHole::FriendOf((Hole::Var(Var(1)), Hole::Var(Var(2)))),
],
}).learn();
- println!("{:#?}", db.query().fact(Relation::TimeIs(Hole::Val(8))).ask());
-
+ println!("{}", db);
+ println!("{}", db.query().fact(Relation::TimeIs(8)).fact(Relation::TimeIs(9)).ask());
}
diff --git a/crates/elfmind/src/noun.rs b/crates/elfmind/src/noun.rs
new file mode 100644
index 0000000..b09dff3
--- /dev/null
+++ b/crates/elfmind/src/noun.rs
@@ -0,0 +1,19 @@
+pub mod character; pub use character::*;
+pub mod item; pub use item::*;
+pub mod time; pub use time::*;
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum Noun {
+ Item(Item),
+ CharacterUnmasked(CharacterUnmasked),
+ Time(Time),
+}
+impl std::fmt::Display for Noun {
+ fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+ match self {
+ Self::Item(x) => write!(f, "{:?}", x),
+ Self::CharacterUnmasked(x) => write!(f, "{:?}", x),
+ Self::Time(x) => write!(f, "{:?}", x),
+ }
+ }
+}
diff --git a/crates/elfmind/src/noun/character.rs b/crates/elfmind/src/noun/character.rs
new file mode 100644
index 0000000..e6029c0
--- /dev/null
+++ b/crates/elfmind/src/noun/character.rs
@@ -0,0 +1,41 @@
+use crate::knowledge::*;
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]
+pub enum CharacterUnmasked {
+ Assagioli,
+ Bombieri,
+ Cagliostro,
+ Divini,
+ Eustachi,
+ Fracastoro,
+ Grimaldi,
+ Human,
+}
+impl From<CharacterUnmasked> for Noun { fn from(x: CharacterUnmasked) -> Self {Noun::CharacterUnmasked(x)} }
+impl TryFrom<Noun> for CharacterUnmasked {
+ type Error = ();
+ fn try_from(v: Noun) -> Result<Self, Self::Error> {
+ if let Noun::CharacterUnmasked(x) = v { Ok(x) } else { Err(()) }
+ }
+}
+impl DisplayNoun for CharacterUnmasked {
+ fn display_noun(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+ write!(f, "{:?}", self)
+ }
+}
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]
+pub enum CharacterMasked {
+ Dragon,
+ Tiger,
+ Rooster,
+ Rabbit,
+ Dog,
+ Horse,
+ Monkey,
+ Ox,
+ Goat,
+ Snake,
+ Rat,
+ Pig,
+}
diff --git a/crates/elfmind/src/noun/item.rs b/crates/elfmind/src/noun/item.rs
new file mode 100644
index 0000000..8ab58d3
--- /dev/null
+++ b/crates/elfmind/src/noun/item.rs
@@ -0,0 +1,20 @@
+use crate::knowledge::*;
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]
+pub enum Item {
+ Apple,
+ BallroomKey,
+ Lumi,
+}
+impl From<Item> for Noun { fn from(x: Item) -> Self {Noun::Item(x)} }
+impl TryFrom<Noun> for Item {
+ type Error = ();
+ fn try_from(v: Noun) -> Result<Self, Self::Error> {
+ if let Noun::Item(x) = v { Ok(x) } else { Err(()) }
+ }
+}
+impl DisplayNoun for Item {
+ fn display_noun(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+ write!(f, "{:?}", self)
+ }
+}
diff --git a/crates/elfmind/src/noun/time.rs b/crates/elfmind/src/noun/time.rs
new file mode 100644
index 0000000..1a69da5
--- /dev/null
+++ b/crates/elfmind/src/noun/time.rs
@@ -0,0 +1,16 @@
+use crate::knowledge::*;
+
+pub type Time = u64;
+
+impl From<Time> for Noun { fn from(x: Time) -> Self {Noun::Time(x)} }
+impl TryFrom<Noun> for Time {
+ type Error = ();
+ fn try_from(v: Noun) -> Result<Self, Self::Error> {
+ if let Noun::Time(x) = v { Ok(x) } else { Err(()) }
+ }
+}
+impl DisplayNoun for Time {
+ fn display_noun(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+ write!(f, "{:?}", self)
+ }
+}
diff --git a/crates/elfmind/src/time.rs b/crates/elfmind/src/time.rs
deleted file mode 100644
index 5a98630..0000000
--- a/crates/elfmind/src/time.rs
+++ /dev/null
@@ -1 +0,0 @@
-pub type Time = u64;
generated by cgit v1.3.1 (git 2.54.0) at 2026-10-31 04:49:30 +0000