Stephen Adams
d3da4311c0
Change-Id: Id4408a761304fc2fcb7ce3bd353c626958971ffb Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/300500 Reviewed-by: Sigmund Cherem <sigmund@google.com> Commit-Queue: Stephen Adams <sra@google.com>
104 lines
2.2 KiB
Dart
104 lines
2.2 KiB
Dart
// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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@pragma('dart2js:never-inline')
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/*member: foo1:function() {
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return 72;
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}*/
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foo1() {
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var a = 'Hello';
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var b = 0;
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return a.codeUnitAt(b);
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// Constant folds to 'return 72;'
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}
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@pragma('dart2js:never-inline')
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/*spec|canary.member: foo2:function() {
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return B.JSString_methods.codeUnitAt$1("Hello", A._asInt("x"));
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}*/
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/*prod.member: foo2:function() {
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return B.JSString_methods.codeUnitAt$1("Hello", "x");
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}*/
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foo2() {
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var a = 'Hello';
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dynamic b = 'x';
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return a.codeUnitAt(b);
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// No folding of index type error.
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}
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@pragma('dart2js:never-inline')
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/*member: foo3:function() {
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return A.ioore("Hello", 55);
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return "Hello".charCodeAt(55);
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}*/
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foo3() {
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var a = 'Hello';
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dynamic b = 55;
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return a.codeUnitAt(b);
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// Index always out of range.
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// The code after the always-fail check is unfortunate.
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}
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@pragma('dart2js:never-inline')
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/*member: foo4:function(i) {
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if (!(i >= 0 && i < 5))
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return A.ioore("Hello", i);
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return "Hello".charCodeAt(i);
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}*/
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foo4(int i) {
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return 'Hello'.codeUnitAt(i);
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// Normal bounds check.
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}
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@pragma('dart2js:never-inline')
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/*member: foo5:function(i) {
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if (!(i < 5))
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return A.ioore("Hello", i);
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return "Hello".charCodeAt(i);
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}*/
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foo5(int i) {
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return 'Hello'.codeUnitAt(i);
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// High-only bounds check.
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}
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@pragma('dart2js:never-inline')
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@pragma('dart2js:index-bounds:trust')
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/*member: foo6:function(i) {
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return "Hello".charCodeAt(i);
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}*/
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foo6(int i) {
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return 'Hello'.codeUnitAt(i);
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// No bound check, as requested.
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}
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@pragma('dart2js:never-inline')
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@pragma('dart2js:index-bounds:trust')
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/*spec|canary.member: foo7:function(i) {
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return "Hello".charCodeAt(A._asInt(i));
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}*/
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/*prod.member: foo7:function(i) {
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return B.JSString_methods.codeUnitAt$1("Hello", i);
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}*/
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foo7(dynamic i) {
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return 'Hello'.codeUnitAt(i);
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// No folding of index type error even when bounds check removed.
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}
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/*member: main:ignore*/
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main() {
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foo1();
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foo2();
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foo3();
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foo4(-9);
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foo4(0);
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foo4(100);
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foo5(0);
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foo5(100);
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foo6(-9);
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foo6(0);
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foo6(100);
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foo7(0);
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foo7('x');
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}
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