Documentation

reflect.InvalidArgumentError

Thrown by `reflect.call_any` when the supplied arguments or returned value do not fit its runtime signature. `argument` names the offending key (`$argN` placeholders included); a return mismatch names the `reflect.call_any return value` boundary. An ill-typed value reports the expected and actual types; a missing required parameter reports the parameter's type and `never`; a key naming no parameter reports the callee's whole function type and the value's type.

Reference version

Signature

class reflect.InvalidArgumentError

Thrown by reflect.call_any when the supplied arguments or returned value do not fit its runtime signature. argument names the offending key ($argN placeholders included); a return mismatch names the reflect.call_any return value boundary. An ill-typed value reports the expected and actual types; a missing required parameter reports the parameter's type and never; a key naming no parameter reports the callee's whole function type and the value's type.

Source:<builtin>/reflect/reflect.bamlbytes 15828–15925

Fields

argument

string

Implementations

reflect.AnyClass for T

Instance methods

function

attributes

(self) -> reflect.Meta throws never

The class declaration's schema metadata, or empty metadata when the runtime type is not a class.

function

find

<T>(self, name: string) -> T | null throws reflect.errors.TypeMismatch

Read the field called name as T, or null if this value's class declares no such field. A present field holding null also reads as null; use has_field or get<T?> to tell the two apart.

Throws

  • reflect.errors.TypeMismatch if the field's value is not a T.
function

find_field

(self, name: string) -> reflect.class.Field | null throws never

A value-bound handle to the field called name, or null if this value's class declares no such field.

function

get

<T>(self, name: string) -> T throws reflect.errors.NotFound | reflect.errors.TypeMismatch

Read the field called name as T. Read a nullable field with a nullable T (get<int?>). find returns null for a missing field instead of throwing.

Throws

  • reflect.errors.NotFound if this value's class declares no field called name.
  • reflect.errors.TypeMismatch if the field's value is not a T.
function

get_field

(self, name: string) -> reflect.class.Field throws reflect.errors.NotFound

A value-bound handle to the field called name. find_field returns null instead of throwing.

Throws

  • reflect.errors.NotFound if this value's class declares no field called name.
function

has_field

(self, name: string) -> bool throws never

Whether this value's runtime class declares a field called name. false when the runtime type is not a class.

function

list_fields

(self) -> reflect.class.Field[] throws never

Reflected fields bound to this value for Field.value<T>().

function

name

(self) -> string throws never

The rendered name of this value's concrete runtime type.

function

type

(self) -> reflect.Type throws never

This value's concrete runtime type.

Source:<builtin>/reflect/reflect.bamlbytes 14431–14461