Rename Context::deault to genesis to clarify it has root

Author: youknowone

vm/src/builtins/type.rs

@@ -964,7 +964,7 @@ mod tests {
 
     #[test]
     fn test_linearise() {
-        let context = Context::default();
+        let context = Context::genesis();
         let object = &context.types.object_type;
         let type_type = &context.types.type_type;
 

vm/src/object/core.rs

@@ -1196,7 +1196,7 @@ mod tests {
 
     #[test]
     fn miri_test_drop() {
-        let ctx = crate::Context::default();
+        let ctx = crate::Context::genesis();
         let obj = ctx.new_bytes(b"dfghjkl".to_vec());
         drop(obj);
     }

vm/src/vm/context.rs

@@ -11,6 +11,7 @@ use crate::{
         PyTupleRef, PyType, PyTypeRef,
     },
     class::{PyClassImpl, StaticType},
+    common::rc::PyRc,
     exceptions,
     function::IntoPyNativeFunc,
     intern::{Internable, MaybeInterned, StringPool},
@@ -21,7 +22,7 @@ use num_bigint::BigInt;
 use num_complex::Complex64;
 use num_traits::ToPrimitive;
 
-#[derive(Debug, Clone)]
+#[derive(Debug)]
 pub struct Context {
     pub true_value: PyIntRef,
     pub false_value: PyIntRef,
@@ -43,7 +44,7 @@ pub struct Context {
 
 macro_rules! declare_const_name {
     ($($name:ident,)*) => {
-        #[derive(Debug, Clone)]
+        #[derive(Debug, Clone, Copy)]
         #[allow(non_snake_case)]
         pub struct ConstName {
             $(pub $name: &'static PyStrInterned,)*
@@ -214,7 +215,14 @@ impl Context {
     pub const INT_CACHE_POOL_MIN: i32 = -5;
     pub const INT_CACHE_POOL_MAX: i32 = 256;
 
-    fn init() -> Self {
+    pub fn genesis() -> &'static PyRc<Self> {
+        rustpython_common::static_cell! {
+            static CONTEXT: PyRc<Context>;
+        }
+        CONTEXT.get_or_init(|| PyRc::new(Self::init_genesis()))
+    }
+
+    fn init_genesis() -> Self {
         flame_guard!("init Context");
         let types = TypeZoo::init();
         let exceptions = exceptions::ExceptionZoo::init();
@@ -494,15 +502,6 @@ impl Context {
     }
 }
 
-impl Default for Context {
-    fn default() -> Self {
-        rustpython_common::static_cell! {
-            static CONTEXT: Context;
-        }
-        CONTEXT.get_or_init(Self::init).clone()
-    }
-}
-
 impl AsRef<Context> for Context {
     fn as_ref(&self) -> &Self {
         self

vm/src/vm/interpreter.rs

@@ -1,4 +1,4 @@
-use super::{setting::Settings, thread, VirtualMachine};
+use super::{setting::Settings, thread, Context, VirtualMachine};
 use crate::{
     stdlib::{atexit, sys},
     PyResult,
@@ -44,7 +44,8 @@ impl Interpreter {
     where
         F: FnOnce(&mut VirtualMachine),
     {
-        let mut vm = VirtualMachine::new(settings);
+        let ctx = Context::genesis();
+        let mut vm = VirtualMachine::new(settings, ctx.clone());
         init(&mut vm);
         vm.initialize();
         Self { vm }

vm/src/vm/mod.rs

@@ -90,9 +90,8 @@ pub struct PyGlobalState {
 
 impl VirtualMachine {
     /// Create a new `VirtualMachine` structure.
-    fn new(settings: Settings) -> VirtualMachine {
+    fn new(settings: Settings, ctx: PyRc<Context>) -> VirtualMachine {
         flame_guard!("new VirtualMachine");
-        let ctx = Context::default();
 
         // make a new module without access to the vm; doesn't
         // set __spec__, __loader__, etc. attributes
@@ -131,7 +130,7 @@ impl VirtualMachine {
         let mut vm = VirtualMachine {
             builtins,
             sys_module,
-            ctx: PyRc::new(ctx),
+            ctx,
             frames: RefCell::new(vec![]),
             wasm_id: None,
             exceptions: RefCell::default(),