Enhance object dictionary handling in type and object modules

- Modify set_dict method to allow assigning dict to objects without existing dict
- Update error handling in object_set_dict to provide more precise error message
- Refactor type module to correctly handle dictionary assignment

Cargo.lock

@@ -1170,9 +1170,9 @@ dependencies = [
 
 [[package]]
 name = "malachite"
-version = "0.4.22"
+version = "0.4.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2fbdf9cb251732db30a7200ebb6ae5d22fe8e11397364416617d2c2cf0c51cb5"
+checksum = "4a6ecab92657eb234bfe98abd0b17920772c6b14ce69256950142e2eb36d000b"
 dependencies = [
  "malachite-base",
  "malachite-nz",
@@ -1181,9 +1181,9 @@ dependencies = [
 
 [[package]]
 name = "malachite-base"
-version = "0.4.22"
+version = "0.4.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5ea0ed76adf7defc1a92240b5c36d5368cfe9251640dcce5bd2d0b7c1fd87aeb"
+checksum = "06f6d078bb4dad5b76f6a85737e6c9113667d199612a73eef375c56e75d5d4d5"
 dependencies = [
  "hashbrown",
  "itertools 0.11.0",
@@ -1193,9 +1193,9 @@ dependencies = [
 
 [[package]]
 name = "malachite-bigint"
-version = "0.2.3"
+version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d149aaa2965d70381709d9df4c7ee1fc0de1c614a4efc2ee356f5e43d68749f8"
+checksum = "63c7698e7abae9522edd41b54ae0395a9bd736ca5054b5fbe672316283a7b817"
 dependencies = [
  "derive_more",
  "malachite",
@@ -1206,9 +1206,9 @@ dependencies = [
 
 [[package]]
 name = "malachite-nz"
-version = "0.4.22"
+version = "0.4.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "34a79feebb2bc9aa7762047c8e5495269a367da6b5a90a99882a0aeeac1841f7"
+checksum = "ad61a09cde72dcdb8b2baaf3e71430c5bd94fb6753da89f17301a459f3e466db"
 dependencies = [
  "itertools 0.11.0",
  "libm",
@@ -1217,9 +1217,9 @@ dependencies = [
 
 [[package]]
 name = "malachite-q"
-version = "0.4.22"
+version = "0.4.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "50f235d5747b1256b47620f5640c2a17a88c7569eebdf27cd9cb130e1a619191"
+checksum = "be4a9dfffb87667ae94e8320213d3f5419e3e37311bc6bf8f4d2ab9b44f3a535"
 dependencies = [
  "itertools 0.11.0",
  "malachite-base",
@@ -1897,7 +1897,7 @@ dependencies = [
 [[package]]
 name = "rustpython-ast"
 version = "0.4.0"
-source = "git+https://github.com/RustPython/Parser.git?rev=d2f137b372ec08ce4a243564a80f8f9153c45a23#d2f137b372ec08ce4a243564a80f8f9153c45a23"
+source = "git+https://github.com/RustPython/Parser.git?rev=4588ea5c3e6327009640e7c9c89eb6fa9220358e#4588ea5c3e6327009640e7c9c89eb6fa9220358e"
 dependencies = [
  "is-macro",
  "malachite-bigint",
@@ -2009,7 +2009,7 @@ dependencies = [
 [[package]]
 name = "rustpython-format"
 version = "0.4.0"
-source = "git+https://github.com/RustPython/Parser.git?rev=d2f137b372ec08ce4a243564a80f8f9153c45a23#d2f137b372ec08ce4a243564a80f8f9153c45a23"
+source = "git+https://github.com/RustPython/Parser.git?rev=4588ea5c3e6327009640e7c9c89eb6fa9220358e#4588ea5c3e6327009640e7c9c89eb6fa9220358e"
 dependencies = [
  "bitflags 2.6.0",
  "itertools 0.11.0",
@@ -2036,7 +2036,7 @@ dependencies = [
 [[package]]
 name = "rustpython-literal"
 version = "0.4.0"
-source = "git+https://github.com/RustPython/Parser.git?rev=d2f137b372ec08ce4a243564a80f8f9153c45a23#d2f137b372ec08ce4a243564a80f8f9153c45a23"
+source = "git+https://github.com/RustPython/Parser.git?rev=4588ea5c3e6327009640e7c9c89eb6fa9220358e#4588ea5c3e6327009640e7c9c89eb6fa9220358e"
 dependencies = [
  "hexf-parse",
  "is-macro",
@@ -2048,7 +2048,7 @@ dependencies = [
 [[package]]
 name = "rustpython-parser"
 version = "0.4.0"
-source = "git+https://github.com/RustPython/Parser.git?rev=d2f137b372ec08ce4a243564a80f8f9153c45a23#d2f137b372ec08ce4a243564a80f8f9153c45a23"
+source = "git+https://github.com/RustPython/Parser.git?rev=4588ea5c3e6327009640e7c9c89eb6fa9220358e#4588ea5c3e6327009640e7c9c89eb6fa9220358e"
 dependencies = [
  "anyhow",
  "is-macro",
@@ -2071,7 +2071,7 @@ dependencies = [
 [[package]]
 name = "rustpython-parser-core"
 version = "0.4.0"
-source = "git+https://github.com/RustPython/Parser.git?rev=d2f137b372ec08ce4a243564a80f8f9153c45a23#d2f137b372ec08ce4a243564a80f8f9153c45a23"
+source = "git+https://github.com/RustPython/Parser.git?rev=4588ea5c3e6327009640e7c9c89eb6fa9220358e#4588ea5c3e6327009640e7c9c89eb6fa9220358e"
 dependencies = [
  "is-macro",
  "memchr",
@@ -2081,7 +2081,7 @@ dependencies = [
 [[package]]
 name = "rustpython-parser-vendored"
 version = "0.4.0"
-source = "git+https://github.com/RustPython/Parser.git?rev=d2f137b372ec08ce4a243564a80f8f9153c45a23#d2f137b372ec08ce4a243564a80f8f9153c45a23"
+source = "git+https://github.com/RustPython/Parser.git?rev=4588ea5c3e6327009640e7c9c89eb6fa9220358e#4588ea5c3e6327009640e7c9c89eb6fa9220358e"
 dependencies = [
  "memchr",
  "once_cell",

Cargo.toml

@@ -127,11 +127,11 @@ rustpython-doc = { git = "https://github.com/RustPython/__doc__", tag = "0.3.0",
 # rustpython-parser = { version = "0.4.0" }
 # rustpython-ast = { version = "0.4.0" }
 # rustpython-format= { version = "0.4.0" }
-rustpython-literal = { git = "https://github.com/RustPython/Parser.git", version = "0.4.0", rev = "d2f137b372ec08ce4a243564a80f8f9153c45a23" }
-rustpython-parser-core = { git = "https://github.com/RustPython/Parser.git", version = "0.4.0", rev = "d2f137b372ec08ce4a243564a80f8f9153c45a23" }
-rustpython-parser = { git = "https://github.com/RustPython/Parser.git", version = "0.4.0", rev = "d2f137b372ec08ce4a243564a80f8f9153c45a23" }
-rustpython-ast = { git = "https://github.com/RustPython/Parser.git", version = "0.4.0", rev = "d2f137b372ec08ce4a243564a80f8f9153c45a23" }
-rustpython-format = { git = "https://github.com/RustPython/Parser.git", version = "0.4.0", rev = "d2f137b372ec08ce4a243564a80f8f9153c45a23" }
+rustpython-literal = { git = "https://github.com/RustPython/Parser.git", version = "0.4.0", rev = "4588ea5c3e6327009640e7c9c89eb6fa9220358e" }
+rustpython-parser-core = { git = "https://github.com/RustPython/Parser.git", version = "0.4.0", rev = "4588ea5c3e6327009640e7c9c89eb6fa9220358e" }
+rustpython-parser = { git = "https://github.com/RustPython/Parser.git", version = "0.4.0", rev = "4588ea5c3e6327009640e7c9c89eb6fa9220358e" }
+rustpython-ast = { git = "https://github.com/RustPython/Parser.git", version = "0.4.0", rev = "4588ea5c3e6327009640e7c9c89eb6fa9220358e" }
+rustpython-format = { git = "https://github.com/RustPython/Parser.git", version = "0.4.0", rev = "4588ea5c3e6327009640e7c9c89eb6fa9220358e" }
 # rustpython-literal = { path = "../RustPython-parser/literal" }
 # rustpython-parser-core = { path = "../RustPython-parser/core" }
 # rustpython-parser = { path = "../RustPython-parser/parser" }
@@ -157,9 +157,9 @@ junction = "1.0.0"
 libc = "0.2.153"
 log = "0.4.16"
 nix = { version = "0.29", features = ["fs", "user", "process", "term", "time", "signal", "ioctl", "socket", "sched", "zerocopy", "dir", "hostname", "net", "poll"] }
-malachite-bigint = "0.2.3"
-malachite-q = "0.4.22"
-malachite-base = "0.4.22"
+malachite-bigint = "0.2.2"
+malachite-q = "<=0.4.18"
+malachite-base = "<=0.4.18"
 memchr = "2.7.2"
 num-complex = "0.4.0"
 num-integer = "0.1.44"

vm/src/builtins/object.rs

@@ -495,9 +495,14 @@ pub fn object_get_dict(obj: PyObjectRef, vm: &VirtualMachine) -> PyResult<PyDict
     obj.dict()
         .ok_or_else(|| vm.new_attribute_error("This object has no __dict__".to_owned()))
 }
-pub fn object_set_dict(obj: PyObjectRef, dict: PyDictRef, vm: &VirtualMachine) -> PyResult<()> {
+
+pub fn object_set_dict(
+    obj: PyObjectRef,
+    dict: PySetterValue<PyDictRef>,
+    vm: &VirtualMachine,
+) -> PyResult<()> {
     obj.set_dict(dict)
-        .map_err(|_| vm.new_attribute_error("This object has no __dict__".to_owned()))
+        .map_err(|_| vm.new_attribute_error("This object has no __dict__ to delete".to_owned()))
 }
 
 pub fn init(ctx: &Context) {

vm/src/builtins/type.rs

@@ -1288,7 +1288,7 @@ fn subtype_set_dict(obj: PyObjectRef, value: PyObjectRef, vm: &VirtualMachine) -
             descr_set(&descr, obj, PySetterValue::Assign(value), vm)
         }
         None => {
-            object::object_set_dict(obj, value.try_into_value(vm)?, vm)?;
+            object::object_set_dict(obj, PySetterValue::Assign(value.try_into_value(vm)?), vm)?;
             Ok(())
         }
     }

vm/src/function/getset.rs

@@ -36,8 +36,10 @@ where
 {
     #[inline]
     fn from_setter_value(vm: &VirtualMachine, obj: PySetterValue) -> PyResult<Self> {
-        let obj = obj.ok_or_else(|| vm.new_type_error("can't delete attribute".to_owned()))?;
-        T::try_from_object(vm, obj)
+        match obj {
+            PySetterValue::Assign(obj) => T::try_from_object(vm, obj),
+            PySetterValue::Delete => T::try_from_object(vm, vm.ctx.none()),
+        }
     }
 }
 

vm/src/object/core.rs

@@ -25,6 +25,7 @@ use crate::{
         lock::{PyMutex, PyMutexGuard, PyRwLock},
         refcount::RefCount,
     },
+    function::PySetterValue,
     vm::VirtualMachine,
 };
 use itertools::Itertools;
@@ -707,13 +708,27 @@ impl PyObject {
 
     /// Set the dict field. Returns `Err(dict)` if this object does not have a dict field
     /// in the first place.
-    pub fn set_dict(&self, dict: PyDictRef) -> Result<(), PyDictRef> {
-        match self.instance_dict() {
-            Some(d) => {
+    pub fn set_dict(&self, dict: PySetterValue<PyDictRef>) -> Result<(), PySetterValue<PyDictRef>> {
+        match (self.instance_dict(), dict) {
+            (Some(d), PySetterValue::Assign(dict)) => {
                 d.set(dict);
                 Ok(())
             }
-            None => Err(dict),
+            (None, PySetterValue::Assign(dict)) => {
+                unsafe {
+                    let ptr = self as *const _ as *mut PyObject;
+                    (*ptr).0.dict = Some(InstanceDict::new(dict));
+                }
+                Ok(())
+            }
+            (Some(_), PySetterValue::Delete) => {
+                unsafe {
+                    let ptr = self as *const _ as *mut PyObject;
+                    (*ptr).0.dict = None;
+                }
+                Ok(())
+            }
+            (None, PySetterValue::Delete) => Err(PySetterValue::Delete),
         }
     }