Optimize error info

Lynskylate · Lynskylate · commit ab98775bd273 · 2019-08-09T21:12:36.000+08:00
diff --git a/vm/src/obj/objbool.rs b/vm/src/obj/objbool.rs
@@ -31,7 +31,12 @@ pub fn boolval(vm: &VirtualMachine, obj: PyObjectRef) -> PyResult<bool> {
             let bool_obj = vm.invoke(method, PyFuncArgs::default())?;
             match bool_obj.payload::<PyInt>() {
                 Some(int_obj) => !int_obj.as_bigint().is_zero(),
-                None => return Err(vm.new_type_error(String::from(""))),
+                None => {
+                    return Err(vm.new_type_error(format!(
+                        "__bool__ should return bool, returned type {}",
+                        bool_obj.class().name
+                    )))
+                }
             }
         }
         None => match vm.get_method(obj.clone(), "__len__") {

Original file line number	Diff line number	Diff line change
`@@ -31,7 +31,12 @@ pub fn boolval(vm: &VirtualMachine, obj: PyObjectRef) -> PyResult<bool> {`
`31`	`31`	`let bool_obj = vm.invoke(method, PyFuncArgs::default())?;`
`32`	`32`	`match bool_obj.payload::<PyInt>() {`
`33`	`33`	`Some(int_obj) => !int_obj.as_bigint().is_zero(),`
`34`		`- None => return Err(vm.new_type_error(String::from(""))),`
	`34`	`+ None => {`
	`35`	`+ return Err(vm.new_type_error(format!(`
	`36`	`+ "__bool__ should return bool, returned type {}",`
	`37`	`+ bool_obj.class().name`
	`38`	`+ )))`
	`39`	`+ }`
`35`	`40`	`}`
`36`	`41`	`}`
`37`	`42`	`None => match vm.get_method(obj.clone(), "__len__") {`