feat: ability to disable math (#429)

Author: load1n9

nova_vm/Cargo.toml

@@ -23,6 +23,9 @@ sonic-rs = { workspace = true }
 wtf8 = { workspace = true }
 
 [features]
+default = ["math"]
+math = []
+
 typescript = []
 
 [build-dependencies]

nova_vm/src/ecmascript/builtins/numbers_and_dates.rs

@@ -4,5 +4,6 @@
 
 pub mod bigint_objects;
 pub mod date_objects;
+#[cfg(feature = "math")]
 pub mod math_object;
 pub mod number_objects;

nova_vm/src/ecmascript/execution/realm.rs

@@ -989,17 +989,19 @@ pub(crate) fn set_default_global_bindings(
         define_property_or_throw(agent, global, name, desc)?;
 
         // 19.4.3 Math
-        let name = PropertyKey::from(BUILTIN_STRING_MEMORY.Math);
-        let value = agent.get_realm(realm_id).intrinsics().math();
-        let desc = PropertyDescriptor {
-            value: Some(value.into_value()),
-            writable: Some(true),
-            enumerable: Some(false),
-            configurable: Some(true),
-            ..Default::default()
-        };
-        define_property_or_throw(agent, global, name, desc)?;
-
+        #[cfg(feature = "math")]
+        {
+            let name = PropertyKey::from(BUILTIN_STRING_MEMORY.Math);
+            let value = agent.get_realm(realm_id).intrinsics().math();
+            let desc = PropertyDescriptor {
+                value: Some(value.into_value()),
+                writable: Some(true),
+                enumerable: Some(false),
+                configurable: Some(true),
+                ..Default::default()
+            };
+            define_property_or_throw(agent, global, name, desc)?;
+        }
         // 19.4.4 Reflect
         let name = PropertyKey::from(BUILTIN_STRING_MEMORY.Reflect);
         let value = agent.get_realm(realm_id).intrinsics().reflect();

nova_vm/src/ecmascript/execution/realm/intrinsics.rs

@@ -128,7 +128,6 @@ use crate::{
                 bigint_constructor::BigIntConstructor, bigint_prototype::BigIntPrototype,
             },
             date_objects::{date_constructor::DateConstructor, date_prototype::DatePrototype},
-            math_object::MathObject,
             number_objects::{
                 number_constructor::NumberConstructor, number_prototype::NumberPrototype,
             },
@@ -143,6 +142,9 @@ use crate::{
     },
 };
 
+#[cfg(feature = "math")]
+use crate::ecmascript::builtins::numbers_and_dates::math_object::MathObject;
+
 use super::RealmIdentifier;
 
 #[derive(Debug, Clone)]
@@ -258,6 +260,7 @@ impl Intrinsics {
         NumberConstructor::create_intrinsic(agent, realm);
         BigIntPrototype::create_intrinsic(agent, realm);
         BigIntConstructor::create_intrinsic(agent, realm);
+        #[cfg(feature = "math")]
         MathObject::create_intrinsic(agent, realm);
         DatePrototype::create_intrinsic(agent, realm);
         DateConstructor::create_intrinsic(agent, realm);
@@ -976,6 +979,7 @@ impl Intrinsics {
             .into()
     }
 
+    #[cfg(feature = "math")]
     /// %Math%
     pub(crate) fn math(&self) -> OrdinaryObject {
         IntrinsicObjectIndexes::MathObject
@@ -1547,6 +1551,7 @@ impl HeapMarkAndSweep for Intrinsics {
         self.map_prototype().mark_values(queues);
         self.map().mark_values(queues);
         self.map_iterator_prototype().mark_values(queues);
+        #[cfg(feature = "math")]
         self.math().mark_values(queues);
         self.number_prototype().mark_values(queues);
         self.number().mark_values(queues);