Add Box support

Author: aumetra

packages/cw-schema/src/default_impls.rs

@@ -1,6 +1,7 @@
 use crate::{MapKind, Node, NodeType, Schemaifier};
 use alloc::{
     borrow::{Cow, ToOwned},
+    boxed::Box,
     collections::BTreeMap,
     string::String,
     vec,
@@ -113,6 +114,24 @@ impl Schemaifier for bool {
     }
 }
 
+impl<T> Schemaifier for Box<T>
+where
+    T: Schemaifier + ?Sized,
+{
+    #[inline]
+    fn visit_schema(visitor: &mut crate::SchemaVisitor) -> crate::DefinitionReference {
+        let node = Node {
+            name: Cow::Borrowed(std::any::type_name::<Self>()),
+            description: None,
+            value: NodeType::Boxed {
+                inner: T::visit_schema(visitor),
+            },
+        };
+
+        visitor.insert(Self::id(), node)
+    }
+}
+
 impl<T> Schemaifier for Vec<T>
 where
     T: Schemaifier,

packages/cw-schema/src/lib.rs

@@ -124,6 +124,9 @@ pub enum NodeType {
         value: DefinitionReference,
     },
 
+    Boxed {
+        inner: DefinitionReference,
+    },
     Optional {
         inner: DefinitionReference,
     },

packages/cw-schema/tests/derive.rs

@@ -19,6 +19,9 @@ struct HelloWorld {
 
     /// Tuple field!
     tuple: (u32, u32),
+
+    /// Boxed field!
+    boxed: Box<str>,
 }
 
 #[derive(Schemaifier)]

packages/cw-schema/tests/snapshots/basic__snapshot_jsonschema.snap

@@ -364,6 +364,24 @@ expression: schema
             "value"
           ]
         },
+        {
+          "type": "object",
+          "properties": {
+            "type": {
+              "type": "string",
+              "const": "boxed"
+            },
+            "inner": {
+              "type": "integer",
+              "format": "uint",
+              "minimum": 0
+            }
+          },
+          "required": [
+            "type",
+            "inner"
+          ]
+        },
         {
           "type": "object",
           "properties": {

packages/cw-schema/tests/snapshots/derive__snapshot_schema.snap

@@ -15,6 +15,10 @@ expression: schema
           "description": "Baz field!",
           "value": 5
         },
+        "boxed": {
+          "description": "Boxed field!",
+          "value": 9
+        },
         "foo": {
           "description": "Foo field!",
           "value": 4
@@ -106,6 +110,15 @@ expression: schema
         3,
         3
       ]
+    },
+    {
+      "name": "str",
+      "type": "string"
+    },
+    {
+      "name": "alloc::boxed::Box<str>",
+      "type": "boxed",
+      "inner": 8
     }
   ]
 }