Joshua Litt
20faaa5d94
Change-Id: Ib18f554c1076f27a3f7c0df5a36410da41a1f467 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/148784 Reviewed-by: Paul Berry <paulberry@google.com> Reviewed-by: Sigmund Cherem <sigmund@google.com>
106 lines
2.8 KiB
Dart
106 lines
2.8 KiB
Dart
// Copyright (c) 2015, 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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// @dart = 2.7
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import 'package:expect/expect.dart';
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import 'package:compiler/src/js/js.dart' as js;
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import 'package:compiler/src/js/placeholder_safety.dart';
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void test(String source, int expected, {List notNull: const []}) {
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var predicate = (int pos) => !notNull.contains(pos);
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js.Template template = js.js.parseForeignJS(source);
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int actual = PlaceholderSafetyAnalysis.analyze(template.ast, predicate);
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Expect.equals(expected, actual, 'source: "$source", notNull: $notNull');
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}
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void main() {
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test('0', 0);
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test('#.x', 1);
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test('!!#.x', 1);
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test('#.x + 1', 1);
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test('1 + #.x', 1);
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test('#[#] + 2', 2);
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test('2 + #[#]', 2);
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test('(# & #) >>> 0', 2);
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test('#.a + #.b + #.c', 1);
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test('#.b + #.b + #.c', 2, notNull: [0]);
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test('#.c + #.b + #.c', 3, notNull: [0, 1]);
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test('#.d + #.b + #.c', 1, notNull: [1]);
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test('typeof(#) == "string"', 1);
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test('"object" === typeof #', 1);
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test('# == 1 || # == 2 || # == 3', 1);
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test('# != 1 && # != 2 && # != 3', 1);
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test('#.x == 1 || # == 1', 1);
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test('# == 1 || #.x == 1', 1);
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test('(# || 1, #)', 1); // Could also be 2.
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test('(#, null.a, #)', 1);
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test('(#, undefined.a, #)', 1);
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test('(#, (void 0).a, #)', 1);
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test('(#, "a".a, #)', 2);
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test('((#, "a").a, #)', 2);
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test('#[#][#][#][#]', 2);
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test('#[#][#][#][#]', 3, notNull: [0]);
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test('#[#][#][#][#]', 3, notNull: [0, 1, 2, 3]);
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test('#.a = #', 2);
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test('#.a.b = #', 1);
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test('#[1] = #', 2);
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test('#[1][1] = #', 1);
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test('#.a = #.a + #.a + #.a', 2);
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test('#.a = #.a + #.a + #.a', 2, notNull: [0]);
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test('#.a = #.a + #.a + #.a', 3, notNull: [1]);
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test('#.a = #.a + #.a + #.a', 4, notNull: [1, 2]);
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test('#()', 1);
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test('#(#, #)', 3);
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test('#.f(#, #)', 1);
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test('#.f(#, #)', 3, notNull: [0]);
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test('(#.a+=1, #)', 1);
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test('(#.a++, #)', 1);
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test('(++#.a, #)', 1);
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test('new Array(#)', 1);
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test('new Date(#)', 1);
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test('new Function(#)', 1);
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test('new RegExp(#)', 1);
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test('new xxx(#)', 0);
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test('String(#)', 1);
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test('# in #', 2);
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test('Object.keys(#)', 1);
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test('typeof #', 1);
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test('typeof #.foo', 1);
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test('typeof foo.#', 0);
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test('typeof Array.#', 1);
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test('throw #', 1);
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test('throw #.x', 1);
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test('(function(){})()', 0);
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test('(function(a,b){#})(#, #)', 0);
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// Placeholders in an immediate call are ok.
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test('(function(a,b){a++;b++;return a+b})(#, #)', 2);
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test('# ? # : #', 1);
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test('(# ? 1 : #, #)', 1);
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test('(# ? # : 2, #)', 1);
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test('(# ? 1 : 2, #)', 1); // Could also be 4.
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test('{A:#, B:#, C:#}', 3);
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test('[#,#,#,#]', 4);
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test('[,,,,#,#,,,]', 2);
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}
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