Implement indexed types for person properties and regions

jasonasher · Jun 2, 2024 · d62bf0b · d62bf0b
1 parent 544bbd7
commit d62bf0b
Show file tree

Hide file tree

Showing 4 changed files with 80 additions and 12 deletions.
diff --git a/src/data_containers/mod.rs b/src/data_containers/mod.rs
@@ -20,6 +20,7 @@ pub trait Property: Any {
 pub trait PropertyWithDefault: Any {
     type Value: Any + Copy;
     fn get_default() -> Self::Value;
+    fn index() -> usize;
 }
 
 impl<T: PropertyWithDefault> Property for T {

diff --git a/src/data_containers/vector_heterogeneous_container.rs b/src/data_containers/vector_heterogeneous_container.rs
@@ -1,10 +1,9 @@
-use std::any::{Any, TypeId};
-use std::collections::HashMap;
+use std::any::Any;
 
 use crate::data_containers::PropertyWithDefault;
 
 pub struct VecDataContainer {
-    data: HashMap<TypeId, Box<dyn Any>>,
+    data: Vec<Option<Box<dyn Any>>>,
 }
 
 impl Default for VecDataContainer {
@@ -15,16 +14,18 @@ impl Default for VecDataContainer {
 
 impl VecDataContainer {
     pub fn new() -> VecDataContainer {
-        VecDataContainer {
-            data: HashMap::new(),
-        }
+        VecDataContainer { data: Vec::new() }
     }
 
     pub fn set_value<K: PropertyWithDefault>(&mut self, index: usize, value: K::Value) {
-        let vec = self
-            .data
-            .entry(TypeId::of::<K>())
-            .or_insert_with(|| Box::new(Vec::<K::Value>::with_capacity(index)));
+        let property_index = K::index();
+        if property_index >= self.data.len() {
+            self.data.resize_with(property_index + 1, || None)
+        }
+        if self.data[property_index].is_none() {
+            self.data[property_index] = Some(Box::new(Vec::<K::Value>::with_capacity(index)));
+        }
+        let vec = self.data[property_index].as_mut().unwrap();
         let vec: &mut Vec<K::Value> = vec.downcast_mut().unwrap();
         if index >= vec.len() {
             vec.resize(index + 1, K::get_default());
@@ -33,15 +34,17 @@ impl VecDataContainer {
     }
 
     pub fn get_value<K: PropertyWithDefault>(&self, index: usize) -> K::Value {
-        match self.data.get(&TypeId::of::<K>()) {
-            Some(boxed_vec) => {
+        let property_index = K::index();
+        match self.data.get(property_index) {
+            Some(Some(boxed_vec)) => {
                 let vec = boxed_vec.downcast_ref::<Vec<K::Value>>().unwrap();
                 if index >= vec.len() {
                     K::get_default()
                 } else {
                     vec[index]
                 }
             }
+            Some(&None) => unreachable!(),
             None => K::get_default(),
         }
     }
@@ -58,6 +61,10 @@ mod tests {
         fn get_default() -> <Self as PropertyWithDefault>::Value {
             0
         }
+
+        fn index() -> usize {
+            0
+        }
     }
 
     struct KeyTwo {}
@@ -67,6 +74,10 @@ mod tests {
         fn get_default() -> <Self as PropertyWithDefault>::Value {
             false
         }
+
+        fn index() -> usize {
+            1
+        }
     }
 
     #[test]

diff --git a/src/person_properties.rs b/src/person_properties.rs
@@ -1,6 +1,8 @@
 use std::any::{Any, TypeId};
 use std::collections::HashMap;
 use std::rc::Rc;
+use std::sync::atomic::{AtomicUsize, Ordering};
+use std::sync::Mutex;
 
 use crate::context::Context;
 use crate::data_containers::vector_heterogeneous_container::VecDataContainer;
@@ -10,6 +12,17 @@ use crate::people::{PersonBuilder, PersonId};
 
 pub trait PersonProperty: PropertyWithDefault {}
 
+static INDEX: Mutex<usize> = Mutex::new(0);
+
+pub fn next(index: &AtomicUsize) -> usize {
+    let mut guard = INDEX.lock().unwrap();
+    if index.load(Ordering::SeqCst) == usize::MAX {
+        index.store(*guard, Ordering::SeqCst);
+        *guard += 1;
+    }
+    index.load(Ordering::Relaxed)
+}
+
 #[macro_export]
 macro_rules! define_person_property {
     ($person_property:ident, $value:ty, $default: expr) => {
@@ -21,6 +34,16 @@ macro_rules! define_person_property {
             fn get_default() -> Self::Value {
                 $default
             }
+
+            fn index() -> usize {
+                static INDEX: std::sync::atomic::AtomicUsize =
+                    std::sync::atomic::AtomicUsize::new(usize::MAX);
+                let mut index = INDEX.load(std::sync::atomic::Ordering::Relaxed);
+                if index == usize::MAX {
+                    index = $crate::person_properties::next(&INDEX);
+                }
+                index
+            }
         }
 
         impl $crate::person_properties::PersonProperty for $person_property {}
@@ -37,6 +60,16 @@ macro_rules! define_person_property_from_enum {
             fn get_default() -> Self::Value {
                 $default
             }
+
+            fn index() -> usize {
+                static INDEX: std::sync::atomic::AtomicUsize =
+                    std::sync::atomic::AtomicUsize::new(usize::MAX);
+                let mut index = INDEX.load(std::sync::atomic::Ordering::Relaxed);
+                if index == usize::MAX {
+                    index = $crate::context::next(&INDEX);
+                }
+                index
+            }
         }
 
         impl $crate::person_properties::PersonProperty for $person_property {}

diff --git a/src/regions.rs b/src/regions.rs
@@ -7,6 +7,8 @@ use crate::people::{PersonBuilder, PersonId};
 use std::any::TypeId;
 use std::collections::HashMap;
 use std::rc::Rc;
+use std::sync::atomic::{AtomicUsize, Ordering};
+use std::sync::Mutex;
 
 #[derive(Hash, Eq, PartialEq, Ord, PartialOrd, Copy, Clone, Debug)]
 pub struct RegionId {
@@ -21,6 +23,17 @@ impl RegionId {
 
 pub trait RegionProperty: PropertyWithDefault {}
 
+static INDEX: Mutex<usize> = Mutex::new(0);
+
+pub fn next(index: &AtomicUsize) -> usize {
+    let mut guard = INDEX.lock().unwrap();
+    if index.load(Ordering::SeqCst) == usize::MAX {
+        index.store(*guard, Ordering::SeqCst);
+        *guard += 1;
+    }
+    index.load(Ordering::Relaxed)
+}
+
 #[macro_export]
 macro_rules! define_region_property {
     ($region_property:ident, $value:ty, $default: expr) => {
@@ -32,6 +45,16 @@ macro_rules! define_region_property {
             fn get_default() -> Self::Value {
                 $default
             }
+
+            fn index() -> usize {
+                static INDEX: std::sync::atomic::AtomicUsize =
+                    std::sync::atomic::AtomicUsize::new(usize::MAX);
+                let mut index = INDEX.load(std::sync::atomic::Ordering::Relaxed);
+                if index == usize::MAX {
+                    index = $crate::regions::next(&INDEX);
+                }
+                index
+            }
         }
 
         impl $crate::regions::RegionProperty for $region_property {}