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// Copyright (C) 2013 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
description: >
`yield` is a valid expression within generator function bodies.
es6id: 14.4
features: [generators]
---*/
var iter, result;
function* g1() { (yield) }
function* g2() { [yield] }
function* g3() { {yield} }
function* g4() { yield, yield; }
function* g5() { (yield) ? yield : yield; }
iter = g1();
result = iter.next();
assert.sameValue(
result.value, undefined, 'Within grouping operator: result `value`'
);
assert.sameValue(
result.done, false, 'Within grouping operator: result `done` flag'
);
result = iter.next();
assert.sameValue(
result.value, undefined, 'Following grouping operator: result `value`'
);
assert.sameValue(
result.done, true, 'Following grouping operator: result `done` flag'
);
iter = g2();
result = iter.next();
assert.sameValue(
result.value, undefined, 'Within array literal: result `value`'
);
assert.sameValue(
result.done, false, 'Within array literal: result `done` flag'
);
result = iter.next();
assert.sameValue(
result.value, undefined, 'Following array literal: result `value`'
);
assert.sameValue(
result.done, true, 'Following array literal: result `done` flag'
);
iter = g3();
result = iter.next();
assert.sameValue(
result.value, undefined, 'Within object literal: result `value`'
);
assert.sameValue(
result.done, false, 'Within object literal: result `done` flag'
);
result = iter.next();
assert.sameValue(
result.value, undefined, 'Following object literal: result `value`'
);
assert.sameValue(
result.done, true, 'Following object literal: result `done` flag'
);
iter = g4();
result = iter.next();
assert.sameValue(
result.value,
undefined,
'First expression in comma expression: result `value`'
);
assert.sameValue(
result.done,
false,
'First expression in comma expression: result `done` flag'
);
result = iter.next();
assert.sameValue(
result.value,
undefined,
'Second expression in comma expression: result `value`'
);
assert.sameValue(
result.done,
false,
'Second expression in comma expression: result `done` flag'
);
result = iter.next();
assert.sameValue(
result.value, undefined, 'Following comma expression: result `value`'
);
assert.sameValue(
result.done, true, 'Following comma expression: result `done` flag'
);
iter = g5();
result = iter.next();
assert.sameValue(
result.value,
undefined,
'Conditional expression in conditional operator: result `value`'
);
assert.sameValue(
result.done,
false,
'Conditional expression in conditional operator: result `done` flag'
);
result = iter.next();
assert.sameValue(
result.value,
undefined,
'Branch in conditional operator: result `value`'
);
assert.sameValue(
result.done,
false,
'Branch in conditional operator: result `done` flag'
);
result = iter.next();
assert.sameValue(
result.value, undefined, 'Following conditional operator: result `value`'
);
assert.sameValue(
result.done, true, 'Following conditional operator: result `done` flag'
);
|
