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1/*
2 * Copyright (c) 2021 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 *     http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16import {
17    expect
18} from 'chai';
19import 'mocha';
20import {
21    Returnundefined,
22    Lda,
23    VReg
24} from "../../src/irnodes";
25import { PandaGen } from "../../src/pandagen";
26import { LocalVariable } from "../../src/variable";
27import { checkInstructions, compileMainSnippet, SnippetCompiler } from "../utils/base";
28import { creatAstFromSnippet } from "../utils/asthelper"
29
30describe("ThisKeyword", function () {
31    let pandaGen: PandaGen;
32
33    beforeEach(function () {
34        pandaGen = new PandaGen("" /* internalName */, creatAstFromSnippet(""), 0 /* number of parameters */);
35    });
36
37    it("this in global scope", function () {
38        let snippetCompiler = new SnippetCompiler();
39        snippetCompiler.compile("this");
40        let globalScope = snippetCompiler.getGlobalScope();
41        let insns = snippetCompiler.getGlobalInsns();
42        let expected = [
43            new Lda(new VReg()),
44            new Returnundefined()
45        ];
46        expect(checkInstructions(insns, expected)).to.be.true;
47        let thisVar = globalScope!.findLocal("this");
48        expect(thisVar instanceof LocalVariable).to.be.true;
49    });
50
51    it("this in function scope", function () {
52        let snippetCompiler = new SnippetCompiler();
53        snippetCompiler.compile("function a() {this}");
54        let functionPg = snippetCompiler.getPandaGenByName("UnitTest.a");
55        let functionScope = functionPg!.getScope();
56        let insns = compileMainSnippet("this;", pandaGen, functionScope);
57        let expected = [
58            new Lda(new VReg()),
59            new Returnundefined()
60        ];
61        expect(checkInstructions(insns, expected)).to.be.true;
62        let thisVar = functionScope!.findLocal("this");
63        expect(thisVar != undefined).to.be.true;
64        expect(thisVar instanceof LocalVariable).to.be.true;
65    });
66});