feat: 添加严格比较运算符与一元加法

crates/oxide_vm/src/coercion.rs

@@ -214,6 +214,48 @@ fn panic_to_object() -> ! {
     panic!("ToObject failed: null or undefined cannot be converted to object")
 }
 
+pub fn same_value(lhs: JsValue, rhs: JsValue) -> bool {
+    if lhs.is_double() && rhs.is_double() {
+        let a = lhs.as_double();
+        let b = rhs.as_double();
+        if a.is_nan() && b.is_nan() {
+            return true;
+        }
+        if a == 0.0 && b == 0.0 {
+            let a_neg = a.is_sign_negative();
+            let b_neg = b.is_sign_negative();
+            return a_neg == b_neg;
+        }
+        return a == b;
+    }
+    if lhs.is_int() && rhs.is_int() {
+        return lhs.as_int() == rhs.as_int();
+    }
+    if lhs.is_bool() && rhs.is_bool() {
+        return lhs.as_bool() == rhs.as_bool();
+    }
+    if lhs.is_null() && rhs.is_null() {
+        return true;
+    }
+    if lhs.is_undefined() && rhs.is_undefined() {
+        return true;
+    }
+    if lhs.is_string() && rhs.is_string() {
+        return lhs == rhs;
+    }
+    if lhs.is_object() && rhs.is_object() {
+        return lhs.as_ptr() == rhs.as_ptr();
+    }
+    false
+}
+
+pub fn strict_equality(lhs: JsValue, rhs: JsValue) -> bool {
+    if lhs.is_double() && rhs.is_double() {
+        return strict_double_eq(lhs.as_double(), rhs.as_double());
+    }
+    same_value(lhs, rhs)
+}
+
 pub fn to_object(val: JsValue, vm: &mut Vm) -> Result<JsValue, &'static str> {
     if val.is_object() {
         return Ok(val);

crates/oxide_vm/src/vm.rs

@@ -262,6 +262,21 @@ impl Vm {
                     self.regs[rd] = JsValue::bool(!rel.unwrap_or(true));
                 }
 
+                OpCode::STRICT_EQ => {
+                    let eq = coercion::strict_equality(self.regs[a], self.regs[b]);
+                    self.regs[rd] = JsValue::bool(eq);
+                }
+
+                OpCode::STRICT_NEQ => {
+                    let ne = !coercion::strict_equality(self.regs[a], self.regs[b]);
+                    self.regs[rd] = JsValue::bool(ne);
+                }
+
+                OpCode::UNARY_PLUS => {
+                    let v = coercion::to_number(self.regs[a], self.kernel.string_forge().as_ref());
+                    self.regs[rd] = JsValue::float(v);
+                }
+
                 OpCode::JMP => {
                     let offset = opcode::offset16(instr) as isize;
                     self.pc = ((self.pc as isize) + offset - 1) as usize;

crates/oxide_vm/tests/coercion_tests.rs

@@ -1,5 +1,7 @@
 use oxide_compiler::compiler::Compiler;
 use oxide_parser::Allocator;
+use oxide_types::value::JsValue;
+use oxide_vm::coercion;
 use oxide_vm::vm::Vm;
 
 fn eval(source: &str) -> String {
@@ -33,3 +35,56 @@ fn eval_coercion_bool_equals_int() {
 fn eval_not_falsy() {
     assert_eq!(eval("!0"), "true");
 }
+
+#[test]
+fn test_same_value_signed_zero() {
+    assert!(!coercion::same_value(
+        JsValue::float(0.0),
+        JsValue::float(-0.0)
+    ));
+}
+
+#[test]
+fn test_strict_equality_signed_zero() {
+    assert!(coercion::strict_equality(
+        JsValue::float(0.0),
+        JsValue::float(-0.0)
+    ));
+}
+
+#[test]
+fn test_same_value_nan() {
+    assert!(coercion::same_value(
+        JsValue::float(f64::NAN),
+        JsValue::float(f64::NAN)
+    ));
+}
+
+#[test]
+fn test_same_value_type_mismatch() {
+    assert!(!coercion::same_value(JsValue::int(1), JsValue::float(1.0)));
+}
+
+#[test]
+fn test_strict_equality_nan() {
+    assert!(!coercion::strict_equality(
+        JsValue::float(f64::NAN),
+        JsValue::float(f64::NAN)
+    ));
+}
+
+#[test]
+fn test_strict_equality_type_mismatch() {
+    assert!(!coercion::strict_equality(
+        JsValue::int(1),
+        JsValue::float(1.0)
+    ));
+}
+
+#[test]
+fn test_strict_equality_null_undefined() {
+    assert!(!coercion::strict_equality(
+        JsValue::null(),
+        JsValue::undefined()
+    ));
+}

crates/oxide_vm/tests/comparison_tests.rs

@@ -58,3 +58,67 @@ fn eval_comparison_gte() {
 fn eval_string_number_eq() {
     assert_eq!(eval("5 == 5"), "true");
 }
+
+#[test]
+fn eval_strict_eq_true() {
+    assert_eq!(eval("1 === 1"), "true");
+}
+
+#[test]
+fn eval_strict_eq_false_type() {
+    assert_eq!(eval("1 === '1'"), "false");
+}
+
+#[test]
+fn eval_strict_eq_null_undefined() {
+    let source = r#" 
+    var undef;
+    undef === null
+    "#;
+    assert_eq!(eval(source), "false");
+}
+
+#[test]
+fn eval_strict_eq_bool_number() {
+    assert_eq!(eval("true === 1"), "false");
+}
+
+#[test]
+fn eval_strict_eq_signed_zero() {
+    assert_eq!(eval("+0 === -0"), "true");
+}
+
+#[test]
+fn eval_strict_neq_true() {
+    assert_eq!(eval("1 !== '1'"), "true");
+}
+
+#[test]
+fn eval_strict_neq_false() {
+    assert_eq!(eval("1 !== 1"), "false");
+}
+
+#[test]
+fn eval_unary_plus_number() {
+    assert_eq!(eval("+'42'"), "42");
+}
+
+#[test]
+fn eval_unary_plus_bool() {
+    assert_eq!(eval("+true"), "1");
+}
+
+#[test]
+fn eval_unary_plus_null() {
+    assert_eq!(eval("+null"), "0");
+}
+
+#[test]
+fn eval_unary_plus_nan() {
+    assert_eq!(eval("+'hello'"), "NaN");
+}
+
+#[test]
+fn eval_unary_plus_false() {
+    assert_eq!(eval("+false"), "0");
+}