idlize

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/*
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 * Copyright (c) 2024 Huawei Device Co., Ltd.
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 * Licensed under the Apache License, Version 2.0 (the "License");
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 * you may not use this file except in compliance with the License.
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 * You may obtain a copy of the License at
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 *
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 * http://www.apache.org/licenses/LICENSE-2.0
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 *
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 * Unless required by applicable law or agreed to in writing, software
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 * distributed under the License is distributed on an "AS IS" BASIS,
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 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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 * See the License for the specific language governing permissions and
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 * limitations under the License.
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 */
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import * as webidl2 from "webidl2"
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import { ExtendedAttribute } from "webidl2";
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export function isEnum(node: webidl2.IDLRootType): node is webidl2.EnumType {
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    return node.type === "enum"
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}
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export function isInterface(node: webidl2.IDLRootType): node is webidl2.InterfaceType {
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    return node.type === "interface"
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}
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export function isClass(node: webidl2.IDLRootType): node is webidl2.InterfaceType {
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    return isInterface(node)
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        && node.extAttrs
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            .map((it: ExtendedAttribute) => it.name)
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            .map((it) => it.toLowerCase())
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            .includes("class")
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}
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export function isCallback(node: webidl2.IDLRootType): node is webidl2.CallbackType {
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    return node.type === "callback"
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}
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export function isTypedef(node: webidl2.IDLRootType): node is webidl2.TypedefType {
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    return node.type === "typedef"
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}
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export function isDictionary(node: webidl2.IDLRootType): node is webidl2.DictionaryType {
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    return node.type === "dictionary"
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}
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export function isAttribute(node: webidl2.IDLInterfaceMemberType): node is webidl2.AttributeMemberType {
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    return node.type === "attribute"
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}
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export function isOperation(node: webidl2.IDLInterfaceMemberType): node is webidl2.OperationMemberType {
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    return node.type === "operation"
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}
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export function isConstructor(node: webidl2.IDLInterfaceMemberType): node is webidl2.ConstructorMemberType {
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    return node.type === "constructor"
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}
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export function isUnionTypeDescription(node: webidl2.IDLTypeDescription): node is webidl2.UnionTypeDescription {
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    return node.union
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}
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export function isSingleTypeDescription(node: webidl2.IDLTypeDescription): node is webidl2.SingleTypeDescription {
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    return (typeof node.idlType === "string")
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}
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export function isSequenceTypeDescription(node: webidl2.IDLTypeDescription): node is webidl2.SequenceTypeDescription {
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    return node.generic === "sequence"
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}
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export function isPromiseTypeDescription(node: webidl2.IDLTypeDescription): node is webidl2.PromiseTypeDescription {
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    return node.generic === "Promise"
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}
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export function isRecordTypeDescription(node: webidl2.IDLTypeDescription): node is webidl2.RecordTypeDescription {
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    return node.generic === "record"
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}
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export function isOptional(node: webidl2.AttributeMemberType): boolean {
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    return node.extAttrs
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        .map((it: ExtendedAttribute) => it.name)
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        .map((it) => it.toLowerCase())
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        .includes("optional")
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}
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