Backed out changeset 11af11887bad (bug 1339395)

This commit is contained in:
Sebastian Hengst 2017-04-28 20:30:20 +02:00
Родитель 1bee09a437
Коммит 368003fcb4
2 изменённых файлов: 0 добавлений и 74 удалений

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@ -1,45 +0,0 @@
// |reftest| skip-if(!xulRuntime.shell)
function property(key, value = key, shorthand = key === value) {
return { key, value, shorthand };
}
function assertDestrAssign(src, pattern) {
assertExpr(`(${src} = 0)`, aExpr("=", pattern, lit(0)));
}
function assertDestrBinding(src, pattern) {
assertDecl(`var ${src} = 0`, varDecl([{id: pattern, init: lit(0)}]));
}
function test() {
// Target expression must be a simple assignment target or a nested pattern
// in object assignment patterns.
assertDestrAssign("{...x}", objPatt([spread(ident("x"))]));
assertDestrAssign("{...(x)}", objPatt([spread(ident("x"))]));
assertDestrAssign("{...obj.p}", objPatt([spread(dotExpr(ident("obj"), ident("p")))]));
assertDestrAssign("{...{}}", objPatt([spread(objPatt([]))]));
assertDestrAssign("{...[]}", objPatt([spread(arrPatt([]))]));
// Object binding patterns only allow binding identifiers or nested patterns.
assertDestrBinding("{...x}", objPatt([spread(ident("x"))]));
assertDestrBinding("{...{}}", objPatt([spread(objPatt([]))]));
assertDestrBinding("{...[]}", objPatt([spread(arrPatt([]))]));
// The rest-property can be preceded by other properties.
for (var assertDestr of [assertDestrAssign, assertDestrBinding]) {
assertDestr("{a, ...x}", objPatt([property(ident("a")), spread(ident("x"))]));
assertDestr("{a: b, ...x}", objPatt([property(ident("a"), ident("b")), spread(ident("x"))]));
assertDestr("{[a]: b, ...x}", objPatt([property(comp(ident("a")), ident("b")), spread(ident("x"))]));
}
// Tests when __proto__ is used in the object pattern.
for (var assertDestr of [assertDestrAssign, assertDestrBinding]) {
assertDestr("{...__proto__}", objPatt([spread(ident("__proto__"))]));
assertDestr("{__proto__, ...x}", objPatt([property(ident("__proto__")), spread(ident("x"))]));
}
assertDestrAssign("{__proto__: a, ...x}", objPatt([property(lit("__proto__"), ident("a")), spread(ident("x"))]));
assertDestrBinding("{__proto__: a, ...x}", objPatt([property(ident("__proto__"), ident("a")), spread(ident("x"))]));
}
runtest(test);

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// |reftest| skip-if(!xulRuntime.shell)
function property(key, value = key, shorthand = key === value) {
return { key, value, shorthand };
}
function test() {
// Any expression can be spreaded.
assertExpr("({...x})", objExpr([spread(ident("x"))]));
assertExpr("({...f()})", objExpr([spread(callExpr(ident("f"), []))]));
assertExpr("({...123})", objExpr([spread(lit(123))]));
// Multiple spread expression are allowed.
assertExpr("({...x, ...obj.p})", objExpr([spread(ident("x")), spread(dotExpr(ident("obj"), ident("p")))]));
// Spread expression can appear anywhere in an object literal.
assertExpr("({p, ...x})", objExpr([property(ident("p")), spread(ident("x"))]));
assertExpr("({p: a, ...x})", objExpr([property(ident("p"), ident("a")), spread(ident("x"))]));
assertExpr("({...x, p: a})", objExpr([spread(ident("x")), property(ident("p"), ident("a"))]));
// Trailing comma after spread expression is allowed.
assertExpr("({...x,})", objExpr([spread(ident("x"))]));
// __proto__ is not special in spread expressions.
assertExpr("({...__proto__})", objExpr([spread(ident("__proto__"))]));
assertExpr("({...__proto__, ...__proto__})", objExpr([spread(ident("__proto__")), spread(ident("__proto__"))]));
}
runtest(test);