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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
const bindingPatterns = [
"[]",
"[a]",
"[a, b]",
"[a, ...b]",
"[...a]",
"[...[]]",
"{}",
"{p: a}",
"{p: a = 0}",
"{p: {}}",
"{p: a, q: b}",
"{a}",
"{a, b}",
"{a = 0}",
];
const functions = [
p => `function f(${p}) {}`,
p => `function* g(${p}) {}`,
p => `({m(${p}) {}});`,
p => `(class {m(${p}) {}});`,
p => `(${p}) => {};`,
];
for (let pattern of bindingPatterns) {
for (let fn of functions) {
// No leading parameters.
eval(fn(`...${pattern}`));
// Leading normal parameters.
eval(fn(`x, ...${pattern}`));
eval(fn(`x, y, ...${pattern}`));
// Leading parameters with defaults.
eval(fn(`x = 0, ...${pattern}`));
eval(fn(`x = 0, y = 0, ...${pattern}`));
// Leading array destructuring parameters.
eval(fn(`[], ...${pattern}`));
eval(fn(`[x], ...${pattern}`));
eval(fn(`[x = 0], ...${pattern}`));
eval(fn(`[...x], ...${pattern}`));
// Leading object destructuring parameters.
eval(fn(`{}, ...${pattern}`));
eval(fn(`{p: x}, ...${pattern}`));
eval(fn(`{x}, ...${pattern}`));
eval(fn(`{x = 0}, ...${pattern}`));
// Trailing parameters after rest parameter.
assertThrowsInstanceOf(() => eval(fn(`...${pattern},`)), SyntaxError);
assertThrowsInstanceOf(() => eval(fn(`...${pattern}, x`)), SyntaxError);
assertThrowsInstanceOf(() => eval(fn(`...${pattern}, x = 0`)), SyntaxError);
assertThrowsInstanceOf(() => eval(fn(`...${pattern}, ...x`)), SyntaxError);
assertThrowsInstanceOf(() => eval(fn(`...${pattern}, []`)), SyntaxError);
assertThrowsInstanceOf(() => eval(fn(`...${pattern}, {}`)), SyntaxError);
// Rest parameter with defaults.
assertThrowsInstanceOf(() => eval(fn(`...${pattern} = 0`)), SyntaxError);
}
}
for (let fn of functions) {
// Missing name, incomplete patterns.
assertThrowsInstanceOf(() => eval(fn(`...`)), SyntaxError);
assertThrowsInstanceOf(() => eval(fn(`...[`)), SyntaxError);
assertThrowsInstanceOf(() => eval(fn(`...{`)), SyntaxError);
// Invalid binding name.
assertThrowsInstanceOf(() => eval(fn(`...[0]`)), SyntaxError);
assertThrowsInstanceOf(() => eval(fn(`...[p.q]`)), SyntaxError);
}
// Rest parameters aren't valid in getter/setter methods.
assertThrowsInstanceOf(() => eval(`({get p(...[]) {}})`), SyntaxError);
assertThrowsInstanceOf(() => eval(`({set p(...[]) {}})`), SyntaxError);
if (typeof reportCompare === "function")
reportCompare(0, 0);