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1/*
2 * Copyright (c) 2023 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 */
15declare function print(arg:any, arg1?:any):string;
16declare class ArkTools {
17    static isSlicedString(str: string): boolean;
18    isAOTCompiled(args: any): boolean;
19}
20function assert (expr: unknown, msg?: string): asserts expr {
21    if (!expr) throw new Error(msg);
22}
23
24var a : string = "12345";
25var cr : string = "clashroyale";
26var c = a + a.substring(2);
27print(c);
28a += a.substring(3);
29print(a);
30a = a + cr.substring(5);
31print(a);
32
33var d = cr.substring(1) + a;
34print(d);
35
36function test_undefined(message, message2, message3, message4) {
37  print(message + ', ' + message2 + ', ' + message3 + ', ' + message4);
38}
39test_undefined('hello');
40
41// multiple add case
42var Text1 = "[^-]*-";
43var Text2 = Text1 + "([^-]" + Text1 + ")*-";
44var Text3 = Text2 + ">?";
45var Text4 = "<(!(--" + Text2 + ">|[^-]";
46print(Text4);
47
48// loop opt case
49var stra = "aaaaaa";
50var strb = "strb";
51print(strb);
52assert(ArkTools.isSlicedString(strb) == false, "Error optimize string add");
53strb = stra + "bbbbbbbb"
54var kk = 10;
55var strc = "";
56for (let i = 0; i < 3; i++) {
57    if (kk > 100) {
58        strc = strb + "c";
59    } else {
60        strc = strb + "-";
61    }
62}
63print(strb);
64let strbHasStringAddOpt: boolean = ArkTools.isSlicedString(strb);
65assert(ArkTools.isSlicedString(strc) == false, "Error optimize string add");
66
67// function call opt case
68function foo1(str) {
69    var strk = str + "kkk";
70    for (let j = 0; j < 3; j++) {
71        if (strk.length > 5) {
72            var stre = str + "-";
73        } else {
74            var stre = str + "+";
75        }
76    }
77}
78foo1(strb);
79print(strb);
80
81// cocos app opt case
82var count = 9;
83function foo2(num) {
84    if (num < 0) {
85        return 3;
86    } else {
87        return "callthis";
88    }
89}
90var right = "hmos";
91if (count > 10) {
92    right += foo2(count);
93}
94var e = "oooohhhhoooossss";
95assert(ArkTools.isSlicedString(e) == false, "Error optimize string add");
96for (var i = 0; i < count; i++) {
97    e += right;
98}
99let eHasStringAddOpt: boolean = ArkTools.isSlicedString(e);
100
101function foo3(str :string) {
102    print(str);
103    print(str.length);
104}
105
106let s:string = "aaaaaaaaaaaaaaaa" + "bbbbbbbbbbbbbb";
107let s1:string = "aaaaaaaaaaaaaaaa" + "bbbbbbbbbbbbbb";
108let ss:string = s + "-";
109
110foo3(s);
111print(s1 == s);
112
113// two const
114let str:string = "Hello World";
115print("Hello" + "World");
116print(str + "Hello");
117print("" + "" + "123" + "");
118
119// one const
120let strs = ["OD", "Huawei", ""];
121for (let i = 0; i<3; ++i) {
122    let m:string = strs[i];
123    print("Hello,  " + m);
124}
125
126// no const
127function foo(flag) {
128    let str = ["BUG", "full of bug"];
129    if (flag) {
130        return str[0];
131    } else {
132        return str[1];
133    }
134}
135let left:string = foo(true);
136let right1:string = foo(true);
137let right2:string = foo(false);
138print(left + right1);
139print(left + right2);
140print(right2 + right2);
141
142if (ArkTools.isAOTCompiled(foo)) {
143    assert(strbHasStringAddOpt == true, "Not optimize string add");
144    assert(eHasStringAddOpt == true, "Not optimize string add");
145}