Upgrade V8 to 5.1.281.57 DO NOT MERGE
FPIIM-449
Change-Id: Id981b686b4d587ac31697662eb98bb34be42ad90
(cherry picked from commit 3b9bc31999c9787eb726ecdbfd5796bfdec32a18)
diff --git a/test/mjsunit/es6/destructuring.js b/test/mjsunit/es6/destructuring.js
new file mode 100644
index 0000000..1f16c45
--- /dev/null
+++ b/test/mjsunit/es6/destructuring.js
@@ -0,0 +1,1191 @@
+// Copyright 2015 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+(function TestObjectLiteralPattern() {
+ var { x : x, y : y, get, set } = { x : 1, y : 2, get: 3, set: 4 };
+ assertEquals(1, x);
+ assertEquals(2, y);
+ assertEquals(3, get);
+ assertEquals(4, set);
+
+ var {z} = { z : 3 };
+ assertEquals(3, z);
+
+
+ var sum = 0;
+ for (var {z} = { z : 3 }; z != 0; z--) {
+ sum += z;
+ }
+ assertEquals(6, sum);
+
+
+ var log = [];
+ var o = {
+ get x() {
+ log.push("x");
+ return 0;
+ },
+ get y() {
+ log.push("y");
+ return {
+ get z() { log.push("z"); return 1; }
+ }
+ }
+ };
+ var { x : x0, y : { z : z1 }, x : x1 } = o;
+ assertSame(0, x0);
+ assertSame(1, z1);
+ assertSame(0, x1);
+ assertArrayEquals(["x", "y", "z", "x"], log);
+}());
+
+
+(function TestObjectLiteralPatternInitializers() {
+ var { x : x, y : y = 2 } = { x : 1 };
+ assertEquals(1, x);
+ assertEquals(2, y);
+
+ var {z = 3} = {};
+ assertEquals(3, z);
+
+ var sum = 0;
+ for (var {z = 3} = {}; z != 0; z--) {
+ sum += z;
+ }
+ assertEquals(6, sum);
+
+ var log = [];
+ var o = {
+ get x() {
+ log.push("x");
+ return undefined;
+ },
+ get y() {
+ log.push("y");
+ return {
+ get z() { log.push("z"); return undefined; }
+ }
+ }
+ };
+ var { x : x0 = 0, y : { z : z1 = 1}, x : x1 = 0} = o;
+ assertSame(0, x0);
+ assertSame(1, z1);
+ assertSame(0, x1);
+ assertArrayEquals(["x", "y", "z", "x"], log);
+}());
+
+
+(function TestObjectLiteralPatternLexicalInitializers() {
+ 'use strict';
+ let { x : x, y : y = 2 } = { x : 1 };
+ assertEquals(1, x);
+ assertEquals(2, y);
+
+ let {z = 3} = {};
+ assertEquals(3, z);
+
+ let log = [];
+ let o = {
+ get x() {
+ log.push("x");
+ return undefined;
+ },
+ get y() {
+ log.push("y");
+ return {
+ get z() { log.push("z"); return undefined; }
+ }
+ }
+ };
+
+ let { x : x0 = 0, y : { z : z1 = 1 }, x : x1 = 5} = o;
+ assertSame(0, x0);
+ assertSame(1, z1);
+ assertSame(5, x1);
+ assertArrayEquals(["x", "y", "z", "x"], log);
+
+ let sum = 0;
+ for (let {x = 0, z = 3} = {}; z != 0; z--) {
+ assertEquals(0, x);
+ sum += z;
+ }
+ assertEquals(6, sum);
+}());
+
+
+(function TestObjectLiteralPatternLexical() {
+ 'use strict';
+ let { x : x, y : y } = { x : 1, y : 2 };
+ assertEquals(1, x);
+ assertEquals(2, y);
+
+ let {z} = { z : 3 };
+ assertEquals(3, z);
+
+ let log = [];
+ let o = {
+ get x() {
+ log.push("x");
+ return 0;
+ },
+ get y() {
+ log.push("y");
+ return {
+ get z() { log.push("z"); return 1; }
+ }
+ }
+ };
+ let { x : x0, y : { z : z1 }, x : x1 } = o;
+ assertSame(0, x0);
+ assertSame(1, z1);
+ assertSame(0, x1);
+ assertArrayEquals(["x", "y", "z", "x"], log);
+
+ let sum = 0;
+ for (let {x, z} = { x : 0, z : 3 }; z != 0; z--) {
+ assertEquals(0, x);
+ sum += z;
+ }
+ assertEquals(6, sum);
+}());
+
+
+(function TestObjectLiteralPatternLexicalConst() {
+ 'use strict';
+ const { x : x, y : y } = { x : 1, y : 2 };
+ assertEquals(1, x);
+ assertEquals(2, y);
+
+ assertThrows(function() { x++; }, TypeError);
+ assertThrows(function() { y++; }, TypeError);
+
+ const {z} = { z : 3 };
+ assertEquals(3, z);
+
+ for (const {x, z} = { x : 0, z : 3 }; z != 3 || x != 0;) {
+ assertTrue(false);
+ }
+}());
+
+
+(function TestFailingMatchesSloppy() {
+ var {x, y} = {};
+ assertSame(undefined, x);
+ assertSame(undefined, y);
+
+ var { x : { z1 }, y2} = { x : {}, y2 : 42 }
+ assertSame(undefined, z1);
+ assertSame(42, y2);
+}());
+
+
+(function TestFailingMatchesStrict() {
+ 'use strict';
+ var {x, y} = {};
+ assertSame(undefined, x);
+ assertSame(undefined, y);
+
+ var { x : { z1 }, y2} = { x : {}, y2 : 42 }
+ assertSame(undefined, z1);
+ assertSame(42, y2);
+
+ {
+ let {x1,y1} = {};
+ assertSame(undefined, x1);
+ assertSame(undefined, y1);
+
+ let { x : { z1 }, y2} = { x : {}, y2 : 42 }
+ assertSame(undefined, z1);
+ assertSame(42, y2);
+ }
+}());
+
+
+(function TestTDZInIntializers() {
+ 'use strict';
+ {
+ let {x, y = x} = {x : 42, y : 27};
+ assertSame(42, x);
+ assertSame(27, y);
+ }
+
+ {
+ let {x, y = x + 1} = { x : 42 };
+ assertSame(42, x);
+ assertSame(43, y);
+ }
+ assertThrows(function() {
+ let {x = y, y} = { y : 42 };
+ }, ReferenceError);
+
+ {
+ let {x, y = eval("x+1")} = {x:42};
+ assertEquals(42, x);
+ assertEquals(43, y);
+ }
+
+ {
+ let {x, y = () => eval("x+1")} = {x:42};
+ assertEquals(42, x);
+ assertEquals(43, y());
+ }
+
+ {
+ let {x = function() {return y+1;}, y} = {y:42};
+ assertEquals(43, x());
+ assertEquals(42, y);
+ }
+ {
+ let {x = function() {return eval("y+1");}, y} = {y:42};
+ assertEquals(43, x());
+ assertEquals(42, y);
+ }
+}());
+
+
+(function TestSideEffectsInInitializers() {
+ var callCount = 0;
+ function f(v) { callCount++; return v; }
+
+ callCount = 0;
+ var { x = f(42) } = { x : 27 };
+ assertSame(27, x);
+ assertEquals(0, callCount);
+
+ callCount = 0;
+ var { x = f(42) } = {};
+ assertSame(42, x);
+ assertEquals(1, callCount);
+}());
+
+
+(function TestAssignmentExprInInitializers() {
+ {
+ let x, y;
+ {
+ let { x = y = 1 } = {};
+ assertSame(x, 1);
+ assertSame(y, 1);
+ }
+ assertSame(undefined, x);
+ assertSame(1, y);
+ }
+
+ {
+ let x, y;
+ {
+ let { x: x = y = 1 } = {};
+ assertSame(1, x);
+ assertSame(1, y);
+ }
+ assertSame(undefined, x);
+ assertSame(1, y);
+ }
+
+ {
+ let x, y;
+ {
+ let [ x = y = 1 ] = [];
+ assertSame(1, x);
+ assertSame(1, y);
+ }
+ assertSame(undefined, x);
+ assertSame(1, y);
+ }
+
+ {
+ let x, y;
+ (function({ x = y = 1 }) {}({}));
+ assertSame(undefined, x);
+ assertSame(1, y);
+ }
+
+ {
+ let x, y;
+ (function({ x: x = y = 1 }) {}({}));
+ assertSame(undefined, x);
+ assertSame(1, y);
+ }
+
+ {
+ let x, y;
+ (function([ x = y = 1 ]) {}([]));
+ assertSame(undefined, x);
+ assertSame(1, y);
+ }
+}());
+
+
+(function TestMultipleAccesses() {
+ assertThrows(
+ "'use strict';"+
+ "const {x,x} = {x:1};",
+ SyntaxError);
+
+ assertThrows(
+ "'use strict';"+
+ "let {x,x} = {x:1};",
+ SyntaxError);
+
+ (function() {
+ var {x,x = 2} = {x : 1};
+ assertSame(1, x);
+ }());
+
+ assertThrows(function () {
+ 'use strict';
+ let {x = (function() { x = 2; }())} = {};
+ }, ReferenceError);
+
+ (function() {
+ 'use strict';
+ let {x = (function() { x = 2; }())} = {x:1};
+ assertSame(1, x);
+ }());
+}());
+
+
+(function TestComputedNames() {
+ var x = 1;
+ var {[x]:y} = {1:2};
+ assertSame(2, y);
+
+ (function(){
+ 'use strict';
+ let {[x]:y} = {1:2};
+ assertSame(2, y);
+ }());
+
+ var callCount = 0;
+ function foo(v) { callCount++; return v; }
+
+ (function() {
+ callCount = 0;
+ var {[foo("abc")]:x} = {abc:42};
+ assertSame(42, x);
+ assertEquals(1, callCount);
+ }());
+
+ (function() {
+ 'use strict';
+ callCount = 0;
+ let {[foo("abc")]:x} = {abc:42};
+ assertSame(42, x);
+ assertEquals(1, callCount);
+ }());
+
+ (function() {
+ callCount = 0;
+ var {[foo("abc")]:x} = {};
+ assertSame(undefined, x);
+ assertEquals(1, callCount);
+ }());
+
+ (function() {
+ 'use strict';
+ callCount = 0;
+ let {[foo("abc")]:x} = {};
+ assertSame(undefined, x);
+ assertEquals(1, callCount);
+ }());
+
+ for (val of [null, undefined]) {
+ callCount = 0;
+ assertThrows(function() {
+ var {[foo()]:x} = val;
+ }, TypeError);
+ assertEquals(0, callCount);
+
+ callCount = 0;
+ assertThrows(function() {
+ 'use strict';
+ let {[foo()]:x} = val;
+ }, TypeError);
+ assertEquals(0, callCount);
+ }
+
+ var log = [];
+ var o = {
+ get x() { log.push("get x"); return 1; },
+ get y() { log.push("get y"); return 2; }
+ }
+ function f(v) { log.push("f " + v); return v; }
+
+ (function() {
+ log = [];
+ var { [f('x')]:x, [f('y')]:y } = o;
+ assertSame(1, x);
+ assertSame(2, y);
+ assertArrayEquals(["f x", "get x", "f y", "get y"], log);
+ }());
+
+ (function() {
+ 'use strict';
+ log = [];
+ let { [f('x')]:x, [f('y')]:y } = o;
+ assertSame(1, x);
+ assertSame(2, y);
+ assertArrayEquals(["f x", "get x", "f y", "get y"], log);
+ }());
+
+ (function() {
+ 'use strict';
+ log = [];
+ const { [f('x')]:x, [f('y')]:y } = o;
+ assertSame(1, x);
+ assertSame(2, y);
+ assertArrayEquals(["f x", "get x", "f y", "get y"], log);
+ }());
+}());
+
+
+(function TestExceptions() {
+ for (var val of [null, undefined]) {
+ assertThrows(function() { var {} = val; }, TypeError);
+ assertThrows(function() { var {x} = val; }, TypeError);
+ assertThrows(function() { var { x : {} } = { x : val }; }, TypeError);
+ assertThrows(function() { 'use strict'; let {} = val; }, TypeError);
+ assertThrows(function() { 'use strict'; let {x} = val; }, TypeError);
+ assertThrows(function() { 'use strict'; let { x : {} } = { x : val }; },
+ TypeError);
+ }
+}());
+
+
+(function TestArrayLiteral() {
+ var [a, b, c] = [1, 2, 3];
+ assertSame(1, a);
+ assertSame(2, b);
+ assertSame(3, c);
+}());
+
+(function TestIterators() {
+ var log = [];
+ function* f() {
+ log.push("1");
+ yield 1;
+ log.push("2");
+ yield 2;
+ log.push("3");
+ yield 3;
+ log.push("done");
+ };
+
+ (function() {
+ log = [];
+ var [a, b, c] = f();
+ assertSame(1, a);
+ assertSame(2, b);
+ assertSame(3, c);
+ assertArrayEquals(["1", "2", "3"], log);
+ }());
+
+ (function() {
+ log = [];
+ var [a, b, c, d] = f();
+ assertSame(1, a);
+ assertSame(2, b);
+ assertSame(3, c);
+ assertSame(undefined, d);
+ assertArrayEquals(["1", "2", "3", "done"], log);
+ }());
+
+ (function() {
+ log = [];
+ var [a, , c] = f();
+ assertSame(1, a);
+ assertSame(3, c);
+ assertArrayEquals(["1", "2", "3"], log);
+ }());
+
+ (function() {
+ log = [];
+ var [a, , c, d] = f();
+ assertSame(1, a);
+ assertSame(3, c);
+ assertSame(undefined, d);
+ assertArrayEquals(["1", "2", "3", "done"], log);
+ }());
+
+ (function() {
+ log = [];
+ // last comma is not an elision.
+ var [a, b,] = f();
+ assertSame(1, a);
+ assertSame(2, b);
+ assertArrayEquals(["1", "2"], log);
+ }());
+
+ (function() {
+ log = [];
+ // last comma is not an elision, but the comma before the last is.
+ var [a, b, ,] = f();
+ assertSame(1, a);
+ assertSame(2, b);
+ assertArrayEquals(["1", "2", "3"], log);
+ }());
+
+ (function() {
+ log = [];
+ var [a, ...rest] = f();
+ assertSame(1, a);
+ assertArrayEquals([2,3], rest);
+ assertArrayEquals(["1", "2", "3", "done"], log);
+ }());
+
+ (function() {
+ log = [];
+ var [a, b, c, ...rest] = f();
+ assertSame(1, a);
+ assertSame(2, b);
+ assertSame(3, c);
+ assertArrayEquals([], rest);
+ assertArrayEquals(["1", "2", "3", "done"], log);
+ }());
+
+ (function() {
+ log = [];
+ var [a, b, c, d, ...rest] = f();
+ assertSame(1, a);
+ assertSame(2, b);
+ assertSame(3, c);
+ assertSame(undefined, d);
+ assertArrayEquals([], rest);
+ assertArrayEquals(["1", "2", "3", "done"], log);
+ }());
+}());
+
+
+(function TestIteratorsLexical() {
+ 'use strict';
+ var log = [];
+ function* f() {
+ log.push("1");
+ yield 1;
+ log.push("2");
+ yield 2;
+ log.push("3");
+ yield 3;
+ log.push("done");
+ };
+
+ (function() {
+ log = [];
+ let [a, b, c] = f();
+ assertSame(1, a);
+ assertSame(2, b);
+ assertSame(3, c);
+ assertArrayEquals(["1", "2", "3"], log);
+ }());
+
+ (function() {
+ log = [];
+ let [a, b, c, d] = f();
+ assertSame(1, a);
+ assertSame(2, b);
+ assertSame(3, c);
+ assertSame(undefined, d);
+ assertArrayEquals(["1", "2", "3", "done"], log);
+ }());
+
+ (function() {
+ log = [];
+ let [a, , c] = f();
+ assertSame(1, a);
+ assertSame(3, c);
+ assertArrayEquals(["1", "2", "3"], log);
+ }());
+
+ (function() {
+ log = [];
+ let [a, , c, d] = f();
+ assertSame(1, a);
+ assertSame(3, c);
+ assertSame(undefined, d);
+ assertArrayEquals(["1", "2", "3", "done"], log);
+ }());
+
+ (function() {
+ log = [];
+ // last comma is not an elision.
+ let [a, b,] = f();
+ assertSame(1, a);
+ assertSame(2, b);
+ assertArrayEquals(["1", "2"], log);
+ }());
+
+ (function() {
+ log = [];
+ // last comma is not an elision, but the comma before the last is.
+ let [a, b, ,] = f();
+ assertSame(1, a);
+ assertSame(2, b);
+ assertArrayEquals(["1", "2", "3"], log);
+ }());
+
+ (function() {
+ log = [];
+ let [a, ...rest] = f();
+ assertSame(1, a);
+ assertArrayEquals([2,3], rest);
+ assertArrayEquals(["1", "2", "3", "done"], log);
+ }());
+
+ (function() {
+ log = [];
+ let [a, b, c, ...rest] = f();
+ assertSame(1, a);
+ assertSame(2, b);
+ assertSame(3, c);
+ assertArrayEquals([], rest);
+ assertArrayEquals(["1", "2", "3", "done"], log);
+ }());
+
+ (function() {
+ log = [];
+ let [a, b, c, d, ...rest] = f();
+ assertSame(1, a);
+ assertSame(2, b);
+ assertSame(3, c);
+ assertSame(undefined, d);
+ assertArrayEquals([], rest);
+ assertArrayEquals(["1", "2", "3", "done"], log);
+ }());
+}());
+
+(function TestIteratorsRecursive() {
+ var log = [];
+ function* f() {
+ log.push("1");
+ yield {x : 1, y : 2};
+ log.push("2");
+ yield [42, 27, 30];
+ log.push("3");
+ yield "abc";
+ log.push("done");
+ };
+
+ (function() {
+ var [{x, y}, [a, b]] = f();
+ assertSame(1, x);
+ assertSame(2, y);
+ assertSame(42, a);
+ assertSame(27, b);
+ assertArrayEquals(["1", "2"], log);
+ }());
+
+ (function() {
+ 'use strict';
+ log = [];
+ let [{x, y}, [a, b]] = f();
+ assertSame(1, x);
+ assertSame(2, y);
+ assertSame(42, a);
+ assertSame(27, b);
+ assertArrayEquals(["1", "2"], log);
+ }());
+}());
+
+
+(function TestForEachLexical() {
+ 'use strict';
+ let a = [{x:1, y:-1}, {x:2,y:-2}, {x:3,y:-3}];
+ let sumX = 0;
+ let sumY = 0;
+ let fs = [];
+ for (let {x,y} of a) {
+ sumX += x;
+ sumY += y;
+ fs.push({fx : function() { return x; }, fy : function() { return y }});
+ }
+ assertSame(6, sumX);
+ assertSame(-6, sumY);
+ assertSame(3, fs.length);
+ for (let i = 0; i < fs.length; i++) {
+ let {fx,fy} = fs[i];
+ assertSame(i+1, fx());
+ assertSame(-(i+1), fy());
+ }
+
+ var o = { __proto__:null, 'a1':1, 'b2':2 };
+ let sx = '';
+ let sy = '';
+ for (let [x,y] in o) {
+ sx += x;
+ sy += y;
+ }
+ assertEquals('ab', sx);
+ assertEquals('12', sy);
+}());
+
+
+(function TestForEachVars() {
+ var a = [{x:1, y:-1}, {x:2,y:-2}, {x:3,y:-3}];
+ var sumX = 0;
+ var sumY = 0;
+ var fs = [];
+ for (var {x,y} of a) {
+ sumX += x;
+ sumY += y;
+ fs.push({fx : function() { return x; }, fy : function() { return y }});
+ }
+ assertSame(6, sumX);
+ assertSame(-6, sumY);
+ assertSame(3, fs.length);
+ for (var i = 0; i < fs.length; i++) {
+ var {fx,fy} = fs[i];
+ assertSame(3, fx());
+ assertSame(-3, fy());
+ }
+
+ var o = { __proto__:null, 'a1':1, 'b2':2 };
+ var sx = '';
+ var sy = '';
+ for (var [x,y] in o) {
+ sx += x;
+ sy += y;
+ }
+ assertEquals('ab', sx);
+ assertEquals('12', sy);
+}());
+
+
+(function TestParameters() {
+ function f({a, b}) { return a - b; }
+ assertEquals(1, f({a : 6, b : 5}));
+
+ function f1(c, {a, b}) { return c + a - b; }
+ assertEquals(8, f1(7, {a : 6, b : 5}));
+
+ function f2({c, d}, {a, b}) { return c - d + a - b; }
+ assertEquals(7, f2({c : 7, d : 1}, {a : 6, b : 5}));
+
+ function f3([{a, b}]) { return a - b; }
+ assertEquals(1, f3([{a : 6, b : 5}]));
+
+ var g = ({a, b}) => { return a - b; };
+ assertEquals(1, g({a : 6, b : 5}));
+
+ var g1 = (c, {a, b}) => { return c + a - b; };
+ assertEquals(8, g1(7, {a : 6, b : 5}));
+
+ var g2 = ({c, d}, {a, b}) => { return c - d + a - b; };
+ assertEquals(7, g2({c : 7, d : 1}, {a : 6, b : 5}));
+
+ var g3 = ([{a, b}]) => { return a - b; };
+ assertEquals(1, g3([{a : 6, b : 5}]));
+}());
+
+
+(function TestExpressionsInParameters() {
+ function f0(x = eval(0)) { return x }
+ assertEquals(0, f0());
+ function f1({a = eval(1)}) { return a }
+ assertEquals(1, f1({}));
+ function f2([x = eval(2)]) { return x }
+ assertEquals(2, f2([]));
+ function f3({[eval(7)]: x}) { return x }
+ assertEquals(3, f3({7: 3}));
+})();
+
+
+(function TestParameterScoping() {
+ var x = 1;
+
+ function f1({a = x}) { var x = 2; return a; }
+ assertEquals(1, f1({}));
+ function f2({a = x}) { function x() {}; return a; }
+ assertEquals(1, f2({}));
+ (function() {
+ 'use strict';
+ function f3({a = x}) { let x = 2; return a; }
+ assertEquals(1, f3({}));
+ function f4({a = x}) { const x = 2; return a; }
+ assertEquals(1, f4({}));
+ function f5({a = x}) { function x() {}; return a; }
+ assertEquals(1, f5({}));
+ })();
+ function f6({a = eval("x")}) { var x; return a; }
+ assertEquals(1, f6({}));
+ (function() {
+ 'use strict';
+ function f61({a = eval("x")}) { var x; return a; }
+ assertEquals(1, f61({}));
+ })();
+ function f62({a = eval("'use strict'; x")}) { var x; return a; }
+ assertEquals(1, f62({}));
+ function f7({a = function() { return x }}) { var x; return a(); }
+ assertEquals(1, f7({}));
+ function f8({a = () => x}) { var x; return a(); }
+ assertEquals(1, f8({}));
+ function f9({a = () => eval("x")}) { var x; return a(); }
+ assertEquals(1, f9({}));
+ (function TestInitializedWithEvalArrowStrict() {
+ 'use strict';
+ function f91({a = () => eval("x")}) { var x; return a(); }
+ assertEquals(1, f91({}));
+ })();
+ function f92({a = () => { 'use strict'; return eval("x") }}) { var x; return a(); }
+ assertEquals(1, f92({}));
+ function f93({a = () => eval("'use strict'; x")}) { var x; return a(); }
+ assertEquals(1, f93({}));
+
+ var g1 = ({a = x}) => { var x = 2; return a; };
+ assertEquals(1, g1({}));
+ var g2 = ({a = x}) => { function x() {}; return a; };
+ assertEquals(1, g2({}));
+ (function() {
+ 'use strict';
+ var g3 = ({a = x}) => { let x = 2; return a; };
+ assertEquals(1, g3({}));
+ var g4 = ({a = x}) => { const x = 2; return a; };
+ assertEquals(1, g4({}));
+ var g5 = ({a = x}) => { function x() {}; return a; };
+ assertEquals(1, g5({}));
+ })();
+ var g6 = ({a = eval("x")}) => { var x; return a; };
+ assertEquals(1, g6({}));
+ (function() {
+ 'use strict';
+ var g61 = ({a = eval("x")}) => { var x; return a; };
+ assertEquals(1, g61({}));
+ })();
+ var g62 = ({a = eval("'use strict'; x")}) => { var x; return a; };
+ assertEquals(1, g62({}));
+ var g7 = ({a = function() { return x }}) => { var x; return a(); };
+ assertEquals(1, g7({}));
+ var g8 = ({a = () => x}) => { var x; return a(); };
+ assertEquals(1, g8({}));
+ var g9 = ({a = () => eval("x")}) => { var x; return a(); };
+ assertEquals(1, g9({}));
+ (function() {
+ 'use strict';
+ var g91 = ({a = () => eval("x")}) => { var x; return a(); };
+ assertEquals(1, g91({}));
+ var g92 = ({a = () => { return eval("x") }}) => { var x; return a(); };
+ assertEquals(1, g92({}));
+ })();
+ var g93 = ({a = () => eval("'use strict'; x")}) => { var x; return a(); };
+ assertEquals(1, g93({}));
+
+ var f11 = function f({x = f}) { var f; return x; }
+ assertSame(f11, f11({}));
+ var f12 = function f({x = f}) { function f() {}; return x; }
+ assertSame(f12, f12({}));
+ (function() {
+ 'use strict';
+ var f13 = function f({x = f}) { let f; return x; }
+ assertSame(f13, f13({}));
+ var f14 = function f({x = f}) { const f = 0; return x; }
+ assertSame(f14, f14({}));
+ var f15 = function f({x = f}) { function f() {}; return x; }
+ assertSame(f15, f15({}));
+ })();
+ var f16 = function f({f = 7, x = f}) { return x; }
+ assertSame(7, f16({}));
+
+ var y = 'a';
+ function f20({[y]: x}) { var y = 'b'; return x; }
+ assertEquals(1, f20({a: 1, b: 2}));
+ function f21({[eval('y')]: x}) { var y = 'b'; return x; }
+ assertEquals(1, f21({a: 1, b: 2}));
+ var g20 = ({[y]: x}) => { var y = 'b'; return x; };
+ assertEquals(1, g20({a: 1, b: 2}));
+ var g21 = ({[eval('y')]: x}) => { var y = 'b'; return x; };
+ assertEquals(1, g21({a: 1, b: 2}));
+})();
+
+
+(function TestParameterDestructuringTDZ() {
+ function f1({a = x}, x) { return a }
+ assertThrows(() => f1({}, 4), ReferenceError);
+ assertEquals(4, f1({a: 4}, 5));
+ function f2({a = eval("x")}, x) { return a }
+ assertThrows(() => f2({}, 4), ReferenceError);
+ assertEquals(4, f2({a: 4}, 5));
+ (function() {
+ 'use strict';
+ function f3({a = eval("x")}, x) { return a }
+ assertThrows(() => f3({}, 4), ReferenceError);
+ assertEquals(4, f3({a: 4}, 5));
+ })();
+ function f4({a = eval("'use strict'; x")}, x) { return a }
+ assertThrows(() => f4({}, 4), ReferenceError);
+ assertEquals(4, f4({a: 4}, 5));
+
+ function f5({a = () => x}, x) { return a() }
+ assertEquals(4, f5({a: () => 4}, 5));
+ function f6({a = () => eval("x")}, x) { return a() }
+ assertEquals(4, f6({a: () => 4}, 5));
+ (function() {
+ 'use strict';
+ function f7({a = () => eval("x")}, x) { return a() }
+ assertEquals(4, f7({a: () => 4}, 5));
+ })();
+ function f8({a = () => eval("'use strict'; x")}, x) { return a() }
+ assertEquals(4, f8({a: () => 4}, 5));
+
+ function f11({a = b}, {b}) { return a }
+ assertThrows(() => f11({}, {b: 4}), ReferenceError);
+ assertEquals(4, f11({a: 4}, {b: 5}));
+ function f12({a = eval("b")}, {b}) { return a }
+ assertThrows(() => f12({}, {b: 4}), ReferenceError);
+ assertEquals(4, f12({a: 4}, {b: 5}));
+ (function() {
+ 'use strict';
+ function f13({a = eval("b")}, {b}) { return a }
+ assertThrows(() => f13({}, {b: 4}), ReferenceError);
+ assertEquals(4, f13({a: 4}, {b: 5}));
+ })();
+ function f14({a = eval("'use strict'; b")}, {b}) { return a }
+ assertThrows(() => f14({}, {b: 4}), ReferenceError);
+ assertEquals(4, f14({a: 4}, {b: 5}));
+
+ function f15({a = () => b}, {b}) { return a() }
+ assertEquals(4, f15({a: () => 4}, {b: 5}));
+ function f16({a = () => eval("b")}, {b}) { return a() }
+ assertEquals(4, f16({a: () => 4}, {b: 5}));
+ (function() {
+ 'use strict';
+ function f17({a = () => eval("b")}, {b}) { return a() }
+ assertEquals(4, f17({a: () => 4}, {b: 5}));
+ })();
+ function f18({a = () => eval("'use strict'; b")}, {b}) { return a() }
+ assertEquals(4, f18({a: () => 4}, {b: 5}));
+
+ // TODO(caitp): TDZ for rest parameters is not working yet.
+ // function f30({x = a}, ...a) { return x[0] }
+ // assertThrows(() => f30({}), ReferenceError);
+ // assertEquals(4, f30({a: [4]}, 5));
+ // function f31({x = eval("a")}, ...a) { return x[0] }
+ // assertThrows(() => f31({}), ReferenceError);
+ // assertEquals(4, f31({a: [4]}, 5));
+ // function f32({x = eval("a")}, ...a) { 'use strict'; return x[0] }
+ // assertThrows(() => f32({}), ReferenceError);
+ // assertEquals(4, f32({a: [4]}, 5));
+ // function f33({x = eval("'use strict'; a")}, ...a) { return x[0] }
+ // assertThrows(() => f33({}), ReferenceError);
+ // assertEquals(4, f33({a: [4]}, 5));
+
+ function f34({x = function() { return a }}, ...a) { return x()[0] }
+ assertEquals(4, f34({}, 4));
+ function f35({x = () => a}, ...a) { return x()[0] }
+ assertEquals(4, f35({}, 4));
+ function f36({x = () => eval("a")}, ...a) { return x()[0] }
+ assertEquals(4, f36({}, 4));
+ (function() {
+ 'use strict';
+ function f37({x = () => eval("a")}, ...a) { return x()[0] }
+ assertEquals(4, f37({}, 4));
+ })();
+ function f38({x = () => { 'use strict'; return eval("a") }}, ...a) { return x()[0] }
+ assertEquals(4, f38({}, 4));
+ function f39({x = () => eval("'use strict'; a")}, ...a) { return x()[0] }
+ assertEquals(4, f39({}, 4));
+
+ // var g30 = ({x = a}, ...a) => {};
+ // assertThrows(() => g30({}), ReferenceError);
+ // var g31 = ({x = eval("a")}, ...a) => {};
+ // assertThrows(() => g31({}), ReferenceError);
+ // var g32 = ({x = eval("a")}, ...a) => { 'use strict'; };
+ // assertThrows(() => g32({}), ReferenceError);
+ // var g33 = ({x = eval("'use strict'; a")}, ...a) => {};
+ // assertThrows(() => g33({}), ReferenceError);
+ var g34 = ({x = function() { return a }}, ...a) => { return x()[0] };
+ assertEquals(4, g34({}, 4));
+ var g35 = ({x = () => a}, ...a) => { return x()[0] };
+ assertEquals(4, g35({}, 4));
+})();
+
+
+(function TestDuplicatesInParameters() {
+ assertThrows("'use strict';function f(x,x){}", SyntaxError);
+ assertThrows("'use strict';function f({x,x}){}", SyntaxError);
+ assertThrows("'use strict';function f(x, {x}){}", SyntaxError);
+ assertThrows("'use strict';var f = (x,x) => {};", SyntaxError);
+ assertThrows("'use strict';var f = ({x,x}) => {};", SyntaxError);
+ assertThrows("'use strict';var f = (x, {x}) => {};", SyntaxError);
+
+ function ok1(x) { var x; return x; };
+ assertEquals(1, ok1(1));
+ function ok2(x) { 'use strict'; { let x = 2; return x; } };
+ assertEquals(2, ok2(1));
+}());
+
+
+(function TestShadowingOfParameters() {
+ function f1({x}) { var x = 2; return x }
+ assertEquals(2, f1({x: 1}));
+ function f2({x}) { { var x = 2; } return x; }
+ assertEquals(2, f2({x: 1}));
+ function f3({x}) { var y = x; var x = 2; return y; }
+ assertEquals(1, f3({x: 1}));
+ function f4({x}) { { var y = x; var x = 2; } return y; }
+ assertEquals(1, f4({x: 1}));
+ function f5({x}, g = () => x) { var x = 2; return g(); }
+ assertEquals(1, f5({x: 1}));
+ function f6({x}, g = () => x) { { var x = 2; } return g(); }
+ assertEquals(1, f6({x: 1}));
+ function f7({x}) { var g = () => x; var x = 2; return g(); }
+ assertEquals(2, f7({x: 1}));
+ function f8({x}) { { var g = () => x; var x = 2; } return g(); }
+ assertEquals(2, f8({x: 1}));
+ function f9({x}, g = () => eval("x")) { var x = 2; return g(); }
+ assertEquals(1, f9({x: 1}));
+
+ function f10({x}, y) { var y; return y }
+ assertEquals(2, f10({x: 6}, 2));
+ function f11({x}, y) { var z = y; var y = 2; return z; }
+ assertEquals(1, f11({x: 6}, 1));
+ function f12(y, g = () => y) { var y = 2; return g(); }
+ assertEquals(1, f12(1));
+ function f13({x}, y, [z], v) { var x, y, z; return x*y*z*v }
+ assertEquals(210, f13({x: 2}, 3, [5], 7));
+
+ function f20({x}) { function x() { return 2 }; return x(); }
+ assertEquals(2, f20({x: 1}));
+ // Function hoisting is blocked by the conflicting x declaration
+ function f21({x}) { { function x() { return 2 } } return x(); }
+ assertThrows(() => f21({x: 1}), TypeError);
+
+ var g1 = ({x}) => { var x = 2; return x };
+ assertEquals(2, g1({x: 1}));
+ var g2 = ({x}) => { { var x = 2; } return x; };
+ assertEquals(2, g2({x: 1}));
+ var g3 = ({x}) => { var y = x; var x = 2; return y; };
+ assertEquals(1, g3({x: 1}));
+ var g4 = ({x}) => { { var y = x; var x = 2; } return y; };
+ assertEquals(1, g4({x: 1}));
+ var g5 = ({x}, g = () => x) => { var x = 2; return g(); };
+ assertEquals(1, g5({x: 1}));
+ var g6 = ({x}, g = () => x) => { { var x = 2; } return g(); };
+ assertEquals(1, g6({x: 1}));
+ var g7 = ({x}) => { var g = () => x; var x = 2; return g(); };
+ assertEquals(2, g7({x: 1}));
+ var g8 = ({x}) => { { var g = () => x; var x = 2; } return g(); };
+ assertEquals(2, g8({x: 1}));
+ var g9 = ({x}, g = () => eval("x")) => { var x = 2; return g(); };
+ assertEquals(1, g9({x: 1}));
+
+ var g10 = ({x}, y) => { var y; return y };
+ assertEquals(2, g10({x: 6}, 2));
+ var g11 = ({x}, y) => { var z = y; var y = 2; return z; };
+ assertEquals(1, g11({x: 6}, 1));
+ var g12 = (y, g = () => y) => { var y = 2; return g(); };
+ assertEquals(1, g12(1));
+ var g13 = ({x}, y, [z], v) => { var x, y, z; return x*y*z*v };
+ assertEquals(210, g13({x: 2}, 3, [5], 7));
+
+ var g20 = ({x}) => { function x() { return 2 }; return x(); }
+ assertEquals(2, g20({x: 1}));
+ var g21 = ({x}) => { { function x() { return 2 } } return x(); }
+ assertThrows(() => g21({x: 1}), TypeError);
+
+ assertThrows("'use strict'; function f(x) { let x = 0; }; f({});", SyntaxError);
+ assertThrows("'use strict'; function f({x}) { let x = 0; }; f({});", SyntaxError);
+ assertThrows("'use strict'; function f(x) { const x = 0; }; f({});", SyntaxError);
+ assertThrows("'use strict'; function f({x}) { const x = 0; }; f({});", SyntaxError);
+
+ assertThrows("'use strict'; let g = (x) => { let x = 0; }; f({});", SyntaxError);
+ assertThrows("'use strict'; let g = ({x}) => { let x = 0; }; f({});", SyntaxError);
+ assertThrows("'use strict'; let g = (x) => { const x = 0; }; f({});", SyntaxError);
+ assertThrows("'use strict'; let g = ({x}) => { const x = 0; }; f({});", SyntaxError);
+}());
+
+
+(function TestArgumentsForNonSimpleParameters() {
+ function f1({}, x) { arguments[1] = 0; return x }
+ assertEquals(6, f1({}, 6));
+ function f2({}, x) { x = 2; return arguments[1] }
+ assertEquals(7, f2({}, 7));
+ function f3(x, {}) { arguments[0] = 0; return x }
+ assertEquals(6, f3(6, {}));
+ function f4(x, {}) { x = 2; return arguments[0] }
+ assertEquals(7, f4(7, {}));
+ function f5(x, ...a) { arguments[0] = 0; return x }
+ assertEquals(6, f5(6, {}));
+ function f6(x, ...a) { x = 2; return arguments[0] }
+ assertEquals(6, f6(6, {}));
+ function f7({a: x}) { x = 2; return arguments[0].a }
+ assertEquals(5, f7({a: 5}));
+ function f8(x, ...a) { a = []; return arguments[1] }
+ assertEquals(6, f8(5, 6));
+}());
+
+
+(function TestForInOfTDZ() {
+ assertThrows("'use strict'; let x = {}; for (let [x, y] of [x]);", ReferenceError);
+ assertThrows("'use strict'; let x = {}; for (let [y, x] of [x]);", ReferenceError);
+ assertThrows("'use strict'; let x = {}; for (let [x, y] in {x});", ReferenceError);
+ assertThrows("'use strict'; let x = {}; for (let [y, x] in {x});", ReferenceError);
+}());
+
+
+(function TestFunctionLength() {
+ assertEquals(1, (function({}) {}).length);
+ assertEquals(1, (function([]) {}).length);
+ assertEquals(1, (function({x}) {}).length);
+ assertEquals(1, (function({}, ...a) {}).length);
+ assertEquals(1, (function({x}, {y} = {}) {}).length);
+ assertEquals(1, (function({x}, {y} = {}, ...a) {}).length);
+ assertEquals(2, (function(x, {y}, {z} = {}) {}).length);
+ assertEquals(2, (function({x}, {}, {z} = {}, ...a) {}).length);
+ assertEquals(1, (function(x, {y} = {}, {z}) {}).length);
+ assertEquals(1, (function({x}, {y} = {}, {z}, ...a) {}).length);
+ assertEquals(1, (function(x, {y} = {}, {z}, {v} = {}) {}).length);
+ assertEquals(1, (function({x}, {y} = {}, {z}, {v} = {}, ...a) {}).length);
+})();
+
+
+(function TestDirectiveThrows() {
+ "use strict";
+
+ assertThrows(function(){ eval("function({}){'use strict';}") }, SyntaxError);
+ assertThrows(function(){ eval("({}) => {'use strict';}") }, SyntaxError);
+ assertThrows(
+ function(){ eval("(class{foo({}) {'use strict';}});") }, SyntaxError);
+
+ assertThrows(
+ function(){ eval("function(a, {}){'use strict';}") }, SyntaxError);
+ assertThrows(function(){ eval("(a, {}) => {'use strict';}") }, SyntaxError);
+ assertThrows(
+ function(){ eval("(class{foo(a, {}) {'use strict';}});") }, SyntaxError);
+})();
+
+
+(function TestLegacyConstDestructuringInForLoop() {
+ var result;
+ for (const {foo} of [{foo: 1}]) { result = foo; }
+ assertEquals(1, result);
+})();
+
+
+(function TestCatch() {
+ "use strict";
+
+ // For testing proper scoping.
+ var foo = "hello", bar = "world", baz = 42;
+
+ try {
+ throw {foo: 1, bar: 2};
+ } catch ({foo, bar, baz = 3}) {
+ assertEquals(1, foo);
+ assertEquals(2, bar);
+ assertEquals(3, baz);
+ }
+
+ try {
+ throw [1, 2, 3];
+ } catch ([foo, ...bar]) {
+ assertEquals(1, foo);
+ assertEquals([2, 3], bar);
+ }
+
+ assertEquals("hello", foo);
+ assertEquals("world", bar);
+ assertEquals(42, baz);
+
+ assertEquals(undefined, eval('try {throw {foo: 1, bar: 2}} catch({foo}) {}'));
+ assertEquals(undefined, eval('try {throw [1, 2, 3]} catch([x]) {}'));
+})();