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escodegen can transparently support logical assignments without any code. But we should test it by using acorn with 2021 option. This patch adds logical-assignments test cases.
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/* | ||
Copyright (C) 2012-2013 Yusuke Suzuki <utatane.tea@gmail.com> | ||
Copyright (C) 2020 Apple Inc. All rights reserved. | ||
Redistribution and use in source and binary forms, with or without | ||
modification, are permitted provided that the following conditions are met: | ||
* Redistributions of source code must retain the above copyright | ||
notice, this list of conditions and the following disclaimer. | ||
* Redistributions in binary form must reproduce the above copyright | ||
notice, this list of conditions and the following disclaimer in the | ||
documentation and/or other materials provided with the distribution. | ||
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | ||
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | ||
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | ||
ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY | ||
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | ||
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | ||
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND | ||
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | ||
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | ||
THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
*/ | ||
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'use strict'; | ||
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var fs = require('fs'), | ||
acorn = require('acorn'), | ||
escodegen = require('./loader'), | ||
chai = require('chai'), | ||
chaiExclude = require('chai-exclude'), | ||
expect = chai.expect; | ||
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chai.use(chaiExclude); | ||
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function test(code, expected) { | ||
var tree, actual, actualTree, options; | ||
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options = { | ||
ranges: false, | ||
locations: false, | ||
ecmaVersion: 12 | ||
}; | ||
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tree = acorn.parse(code, options); | ||
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// for UNIX text comment | ||
actual = escodegen.generate(tree); | ||
actualTree = acorn.parse(actual, options); | ||
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expect(actual).to.be.equal(expected); | ||
expect(tree).excludingEvery(['start', 'end', 'raw']).to.deep.equal(actualTree); | ||
} | ||
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function testMin(code, expected) { | ||
var tree, actual, actualTree, options; | ||
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options = { | ||
ranges: false, | ||
locations: false, | ||
ecmaVersion: 12 | ||
}; | ||
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tree = acorn.parse(code, options); | ||
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// for UNIX text comment | ||
actual = escodegen.generate(tree, { | ||
format: escodegen.FORMAT_MINIFY, | ||
raw: false | ||
}).replace(/[\n\r]$/, '') + '\n'; | ||
actualTree = acorn.parse(actual, options); | ||
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expect(actual).to.be.equal(expected); | ||
expect(tree).excludingEvery(['start', 'end', 'raw']).to.deep.equal(actualTree); | ||
} | ||
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describe('compare acorn es2021 test', function () { | ||
fs.readdirSync(__dirname + '/compare-acorn-es2021').sort().forEach(function(file) { | ||
var code, expected, exp, min; | ||
if (/\.js$/.test(file) && !/expected\.js$/.test(file) && !/expected\.min\.js$/.test(file)) { | ||
it(file, function () { | ||
exp = file.replace(/\.js$/, '.expected.js'); | ||
min = file.replace(/\.js$/, '.expected.min.js'); | ||
code = fs.readFileSync(__dirname + '/compare-acorn-es2021/' + file, 'utf-8'); | ||
expected = fs.readFileSync(__dirname + '/compare-acorn-es2021/' + exp, 'utf-8'); | ||
test(code, expected); | ||
if (fs.existsSync(__dirname + '/compare-acorn-es2021/' + min)) { | ||
expected = fs.readFileSync(__dirname + '/compare-acorn-es2021/' + min, 'utf-8'); | ||
testMin(code, expected); | ||
} | ||
}); | ||
} | ||
}); | ||
}); | ||
/* vim: set sw=4 ts=4 et tw=80 : */ |
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undefined &&= 42; | ||
x &&= ++counter; | ||
x.a &&= 42; | ||
x['a'] &&= 42; | ||
undefined ||= 42; | ||
x ||= ++counter; | ||
x.a ||= 42; | ||
x['a'] ||= 42; | ||
undefined ??= 42; | ||
x ??= ++counter; | ||
x.a ??= 42; | ||
x['a'] ??= 42; |
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undefined&&=42;x&&=++counter;x.a&&=42;x['a']&&=42;undefined||=42;x||=++counter;x.a||=42;x['a']||=42;undefined??=42;x??=++counter;x.a??=42;x['a']??=42 |
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undefined &&= 42; | ||
x &&= ++counter; | ||
x.a &&= 42; | ||
x['a'] &&= 42; | ||
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undefined ||= 42; | ||
x ||= ++counter; | ||
x.a ||= 42; | ||
x['a'] ||= 42; | ||
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undefined ??= 42; | ||
x ??= ++counter; | ||
x.a ??= 42; | ||
x['a'] ??= 42; |