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// The parser should throw SyntaxError immediately if it finds "..." in a
// context where it's not allowed.
function testThrow(code, column) {
var caught = false;
try {
eval(code);
} catch (e) {
caught = true;
assertEq(e.columnNumber, column);
}
assertEq(caught, true,
"failed to throw evaluating <" + code + ">");
}
// expression statement
testThrow(`
...a)=>
`, 1);
// default parameter
testThrow(`
function f(x=...a) =>
`, 14);
// rest parameter
testThrow(`
function f(... ...a) =>
`, 16);
// destructuring parameter
testThrow(`
([... ...a)=>
`, 7);
testThrow(`
({...a)=>
`, 7);
testThrow(`
function f([... ...a)=>
`, 17);
testThrow(`
function f({...a)=>
`, 17);
// arrow
testThrow(`
x => ...a)=>
`, 6);
// template literal
testThrow("`${ ...a)=>}`", 5);
// destructing assignment
testThrow(`
var [... ...a)=>
`, 10);
testThrow(`
var {...a)=>
`, 10);
// initializer
testThrow(`
var [a] = ...a)=>
`, 11);
testThrow(`
var {a:a} = ...a)=>
`, 13);
testThrow(`
var a = ...a)=>
`, 9);
// if statement
testThrow(`
if (...a) =>
`, 5);
// for statement
testThrow(`
for (...a)=>
`, 6);
testThrow(`
for (let a in ...a)=>
`, 15);
testThrow(`
for (let a of ...a)=>
`, 15);
testThrow(`
for (; ...a)=>
`, 8);
testThrow(`
for (;; ...a)=>
`, 9);
// case
testThrow(`
switch (x) { case ...a)=>
`, 19);
// return statement
testThrow(`
function f(x) { return ...a)=>
`, 24);
// yield expression
testThrow(`
function* f(x) { yield ...a)=>
`, 24);
// throw statement
testThrow(`
throw ...a) =>
`, 7);
// class
testThrow(`
class A extends ...a) =>
`, 17);
// conditional expression
testThrow(`
1 ? ...a) =>
`, 5);
testThrow(`
1 ? 2 : ...a) =>
`, 9);
// unary operators
testThrow(`
void ...a) =>
`, 6);
testThrow(`
typeof ...a) =>
`, 8);
testThrow(`
++ ...a) =>
`, 4);
testThrow(`
delete ...a) =>
`, 8);
// new
testThrow(`
new ...a) =>
`, 5);
// member expression
testThrow(`
x[...a) =>
`, 3);
// array literal
testThrow(`
[... ...a) =>
`, 6);
// object literal
testThrow(`
({[...a) =>
`, 4);
testThrow(`
({x: ...a) =>
`, 6);
// assignment
testThrow(`
x = ...a) =>
`, 5);