refactor: 拆分属性与成员分发并统一 LOAD_CONST 发射

2026-06-09 00:27:09 +08:00
parent a0c1181fdc
commit e6ae7fbc46
6 changed files with 574 additions and 645 deletions
@@ -1 +1,191 @@
-// dispatch helper functions extracted from vm.rs
+use oxide_compiler::opcode::OpCode;
+use oxide_types::object::JsObject;
+use oxide_types::value::JsValue;
+
+use crate::coercion;
+use crate::vm::Vm;
+
+impl Vm {
+    pub(crate) fn dispatch_member_op(
+        &mut self,
+        op: OpCode,
+        rd: usize,
+        a: usize,
+        b: usize,
+    ) -> Result<(), String> {
+        match op {
+            OpCode::MEMBER_INC => self.dispatch_member_inc(rd, a, b),
+            OpCode::MEMBER_DEC => self.dispatch_member_dec(rd, a, b),
+            OpCode::DYN_MEMBER_INC => self.dispatch_dyn_member_inc(rd, a, b),
+            OpCode::DYN_MEMBER_DEC => self.dispatch_dyn_member_dec(rd, a, b),
+            OpCode::COMPOUND_MEMBER_ADD => self.dispatch_compound_member_add(rd, a, b),
+            OpCode::COMPOUND_MEMBER_SUB => self.dispatch_compound_member_numeric(
+                rd,
+                a,
+                b,
+                "COMPOUND_MEMBER_SUB on non-object",
+                |l, r| l - r,
+            ),
+            OpCode::COMPOUND_MEMBER_MUL => self.dispatch_compound_member_numeric(
+                rd,
+                a,
+                b,
+                "COMPOUND_MEMBER_MUL on non-object",
+                |l, r| l * r,
+            ),
+            OpCode::COMPOUND_MEMBER_DIV => self.dispatch_compound_member_numeric(
+                rd,
+                a,
+                b,
+                "COMPOUND_MEMBER_DIV on non-object",
+                |l, r| l / r,
+            ),
+            OpCode::COMPOUND_MEMBER_MOD => self.dispatch_compound_member_numeric(
+                rd,
+                a,
+                b,
+                "COMPOUND_MEMBER_MOD on non-object",
+                |l, r| l % r,
+            ),
+            OpCode::COMPOUND_MEMBER_EXP => self.dispatch_compound_member_numeric(
+                rd,
+                a,
+                b,
+                "COMPOUND_MEMBER_EXP on non-object",
+                |l, r| l.powf(r),
+            ),
+            _ => unreachable!("non-member opcode passed to dispatch_member_op"),
+        }
+    }
+
+    fn member_target(
+        &mut self,
+        rd: usize,
+        b: usize,
+        error_msg: &str,
+    ) -> Result<(*mut JsObject, u32), String> {
+        let obj_ptr = self.regs[rd].as_object_ptr() as *mut JsObject;
+        if obj_ptr.is_null() {
+            self.raise_type_error(error_msg)?;
+            return Err(String::new());
+        }
+        let prop_name_si = self.property_key_si(self.regs[b]);
+        Ok((obj_ptr, prop_name_si))
+    }
+
+    fn dispatch_member_inc(&mut self, rd: usize, a: usize, b: usize) -> Result<(), String> {
+        let Ok((obj_ptr, prop_name_si)) = self.member_target(rd, b, "MEMBER_INC on non-object")
+        else {
+            return Ok(());
+        };
+        let obj = unsafe { &mut *obj_ptr };
+        let prop_val = self.read_member_prop(obj, prop_name_si);
+        let n = coercion::to_number(prop_val, self.kernel.string_forge().as_ref());
+        let new_val = JsValue::float(n + 1.0);
+        self.set_member_prop(obj, prop_name_si, new_val)?;
+        self.regs[a] = new_val;
+        Ok(())
+    }
+
+    fn dispatch_member_dec(&mut self, rd: usize, a: usize, b: usize) -> Result<(), String> {
+        let Ok((obj_ptr, prop_name_si)) = self.member_target(rd, b, "MEMBER_DEC on non-object")
+        else {
+            return Ok(());
+        };
+        let obj = unsafe { &mut *obj_ptr };
+        let prop_val = self.read_member_prop(obj, prop_name_si);
+        let n = coercion::to_number(prop_val, self.kernel.string_forge().as_ref());
+        let new_val = JsValue::float(n - 1.0);
+        self.set_member_prop(obj, prop_name_si, new_val)?;
+        self.regs[a] = new_val;
+        Ok(())
+    }
+
+    fn dispatch_dyn_member_inc(&mut self, rd: usize, a: usize, b: usize) -> Result<(), String> {
+        let obj_ptr = self.regs[rd].as_object_ptr() as *mut JsObject;
+        if obj_ptr.is_null() {
+            self.raise_type_error("DYN_MEMBER_INC on non-object")?;
+            return Ok(());
+        }
+        let obj = unsafe { &mut *obj_ptr };
+        let prop_name_si = self.property_key_si(self.regs[a]);
+        let prop_val = self
+            .resolve_property(obj, prop_name_si)
+            .unwrap_or(JsValue::undefined());
+        let n = coercion::to_number(prop_val, self.kernel.string_forge().as_ref());
+        let new_val = JsValue::float(n + 1.0);
+        self.set_or_create_prop_value(obj, prop_name_si, new_val);
+        self.regs[b] = new_val;
+        Ok(())
+    }
+
+    fn dispatch_dyn_member_dec(&mut self, rd: usize, a: usize, b: usize) -> Result<(), String> {
+        let obj_ptr = self.regs[rd].as_object_ptr() as *mut JsObject;
+        if obj_ptr.is_null() {
+            self.raise_type_error("DYN_MEMBER_DEC on non-object")?;
+            return Ok(());
+        }
+        let obj = unsafe { &mut *obj_ptr };
+        let prop_name_si = self.property_key_si(self.regs[a]);
+        let prop_val = self
+            .resolve_property(obj, prop_name_si)
+            .unwrap_or(JsValue::undefined());
+        let n = coercion::to_number(prop_val, self.kernel.string_forge().as_ref());
+        let new_val = JsValue::float(n - 1.0);
+        self.set_or_create_prop_value(obj, prop_name_si, new_val);
+        self.regs[b] = new_val;
+        Ok(())
+    }
+
+    fn dispatch_compound_member_add(
+        &mut self,
+        rd: usize,
+        a: usize,
+        b: usize,
+    ) -> Result<(), String> {
+        let Ok((obj_ptr, prop_name_si)) =
+            self.member_target(rd, b, "COMPOUND_MEMBER_ADD on non-object")
+        else {
+            return Ok(());
+        };
+        let obj = unsafe { &mut *obj_ptr };
+        let prop_val = self.read_member_prop(obj, prop_name_si);
+        let rhs = self.regs[a];
+        let new_val = if prop_val.is_string() || rhs.is_string() {
+            let ls = coercion::to_string(self.kernel.string_forge().as_ref(), prop_val);
+            let rs = coercion::to_string(self.kernel.string_forge().as_ref(), rhs);
+            self.intern(&format!("{ls}{rs}"))
+        } else {
+            let ln = coercion::to_number(prop_val, self.kernel.string_forge().as_ref());
+            let rn = coercion::to_number(rhs, self.kernel.string_forge().as_ref());
+            JsValue::float(ln + rn)
+        };
+        self.set_member_prop(obj, prop_name_si, new_val)?;
+        self.regs[a] = new_val;
+        Ok(())
+    }
+
+    fn dispatch_compound_member_numeric<F>(
+        &mut self,
+        rd: usize,
+        a: usize,
+        b: usize,
+        error_msg: &str,
+        op: F,
+    ) -> Result<(), String>
+    where
+        F: FnOnce(f64, f64) -> f64,
+    {
+        let Ok((obj_ptr, prop_name_si)) = self.member_target(rd, b, error_msg) else {
+            return Ok(());
+        };
+        let obj = unsafe { &mut *obj_ptr };
+        let prop_val = self.read_member_prop(obj, prop_name_si);
+        let ln = coercion::to_number(prop_val, self.kernel.string_forge().as_ref());
+        let rn = coercion::to_number(self.regs[a], self.kernel.string_forge().as_ref());
+        let new_val = JsValue::float(op(ln, rn));
+        self.regs[a] = new_val;
+        self.set_member_prop(obj, prop_name_si, new_val)?;
+        Ok(())
+    }
+}