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			1232 lines
		
	
	
		
			41 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			1232 lines
		
	
	
		
			41 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
| // Copyright 2011 the V8 project authors. All rights reserved.
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| // Redistribution and use in source and binary forms, with or without
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| // modification, are permitted provided that the following conditions are
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| // met:
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| //
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| //     * Redistributions of source code must retain the above copyright
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| //       notice, this list of conditions and the following disclaimer.
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| //     * Redistributions in binary form must reproduce the above
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| //       copyright notice, this list of conditions and the following
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| //       disclaimer in the documentation and/or other materials provided
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| //       with the distribution.
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| //     * Neither the name of Google Inc. nor the names of its
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| //       contributors may be used to endorse or promote products derived
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| //       from this software without specific prior written permission.
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| //
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| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 | |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 
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| function CheckStrictMode(code, exception) {
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|   assertDoesNotThrow(code);
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|   assertThrows("'use strict';\n" + code, exception);
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|   assertThrows('"use strict";\n' + code, exception);
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|   assertDoesNotThrow("\
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|     function outer() {\
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|       function inner() {\n"
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|         + code +
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|       "\n}\
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|     }");
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|   assertThrows("\
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|     function outer() {\
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|       'use strict';\
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|       function inner() {\n"
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|         + code +
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|       "\n}\
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|     }", exception);
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| }
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| 
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| function CheckFunctionConstructorStrictMode() {
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|   var args = [];
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|   for (var i = 0; i < arguments.length; i ++) {
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|     args[i] = arguments[i];
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|   }
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|   // Create non-strict function. No exception.
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|   args[arguments.length] = "";
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|   assertDoesNotThrow(function() {
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|     Function.apply(this, args);
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|   });
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|   // Create strict mode function. Exception expected.
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|   args[arguments.length] = "'use strict';";
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|   assertThrows(function() {
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|     Function.apply(this, args);
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|   }, SyntaxError);
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| }
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| 
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| // Incorrect 'use strict' directive.
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| (function UseStrictEscape() {
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|   "use\\x20strict";
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|   with ({}) {};
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| })();
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| 
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| // Incorrectly place 'use strict' directive.
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| assertThrows("function foo (x) 'use strict'; {}", SyntaxError);
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| 
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| // 'use strict' in non-directive position.
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| (function UseStrictNonDirective() {
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|   void(0);
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|   "use strict";
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|   with ({}) {};
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| })();
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| 
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| // Multiple directives, including "use strict".
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| assertThrows('\
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| "directive 1";\
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| "another directive";\
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| "use strict";\
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| "directive after strict";\
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| "and one more";\
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| with({}) {}', SyntaxError);
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| 
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| // 'with' disallowed in strict mode.
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| CheckStrictMode("with({}) {}", SyntaxError);
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| 
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| // Function named 'eval'.
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| CheckStrictMode("function eval() {}", SyntaxError);
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| 
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| // Function named 'arguments'.
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| CheckStrictMode("function arguments() {}", SyntaxError);
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| 
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| // Function parameter named 'eval'.
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| CheckStrictMode("function foo(a, b, eval, c, d) {}", SyntaxError);
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| 
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| // Function parameter named 'arguments'.
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| CheckStrictMode("function foo(a, b, arguments, c, d) {}", SyntaxError);
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| 
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| // Property accessor parameter named 'eval'.
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| CheckStrictMode("var o = { set foo(eval) {} }", SyntaxError);
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| 
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| // Property accessor parameter named 'arguments'.
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| CheckStrictMode("var o = { set foo(arguments) {} }", SyntaxError);
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| 
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| // Duplicate function parameter name.
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| CheckStrictMode("function foo(a, b, c, d, b) {}", SyntaxError);
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| 
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| // Function constructor: eval parameter name.
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| CheckFunctionConstructorStrictMode("eval");
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| 
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| // Function constructor: arguments parameter name.
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| CheckFunctionConstructorStrictMode("arguments");
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| 
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| // Function constructor: duplicate parameter name.
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| CheckFunctionConstructorStrictMode("a", "b", "c", "b");
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| CheckFunctionConstructorStrictMode("a,b,c,b");
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| 
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| // catch(eval)
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| CheckStrictMode("try{}catch(eval){};", SyntaxError);
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| 
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| // catch(arguments)
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| CheckStrictMode("try{}catch(arguments){};", SyntaxError);
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| 
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| // var eval
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| CheckStrictMode("var eval;", SyntaxError);
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| 
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| // var arguments
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| CheckStrictMode("var arguments;", SyntaxError);
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| 
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| // Strict mode applies to the function in which the directive is used..
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| assertThrows('\
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| function foo(eval) {\
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|   "use strict";\
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| }', SyntaxError);
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| 
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| // Strict mode doesn't affect the outer stop of strict code.
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| (function NotStrict(eval) {
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|   function Strict() {
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|     "use strict";
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|   }
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|   with ({}) {};
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| })();
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| 
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| // Octal literal
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| CheckStrictMode("var x = 012");
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| CheckStrictMode("012");
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| CheckStrictMode("'Hello octal\\032'");
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| CheckStrictMode("function octal() { return 012; }");
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| CheckStrictMode("function octal() { return '\\032'; }");
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| 
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| (function ValidEscape() {
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|   "use strict";
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|   var x = '\0';
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|   var y = "\0";
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| })();
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| 
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| // Octal before "use strict"
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| assertThrows('\
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|   function strict() {\
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|     "octal\\032directive";\
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|     "use strict";\
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|   }', SyntaxError);
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| 
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| (function StrictModeNonDuplicate() {
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|   "use strict";
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|   var x = { 123 : 1, "0123" : 2 };
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|   var x = {
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|     123: 1,
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|     '123.00000000000000000000000000000000000000000000000000000000000000000001':
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|       2
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|   };
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| })();
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| 
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| // Duplicate data properties are allowed in ES6
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| (function StrictModeDuplicateES6() {
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|   'use strict';
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|   var x = {
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|     123: 1,
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|     123.00000000000000000000000000000000000000000000000000000000000000000001: 2
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|   };
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|   var x = { dupe : 1, nondupe: 3, dupe : 2 };
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|   var x = { '1234' : 1, '2345' : 2, '1234' : 3 };
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|   var x = { '1234' : 1, '2345' : 2, 1234 : 3 };
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|   var x = { 3.14 : 1, 2.71 : 2, 3.14 : 3 };
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|   var x = { 3.14 : 1, '3.14' : 2 };
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| 
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|   var x = { get foo() { }, get foo() { } };
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|   var x = { get foo(){}, get 'foo'(){}};
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|   var x = { get 12(){}, get '12'(){}};
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| 
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|   // Two setters
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|   var x = { set foo(v) { }, set foo(v) { } };
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|   var x = { set foo(v) { }, set 'foo'(v) { } };
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|   var x = { set 13(v) { }, set '13'(v) { } };
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| 
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|   // Setter and data
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|   var x = { foo: 'data', set foo(v) { } };
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|   var x = { set foo(v) { }, foo: 'data' };
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|   var x = { foo: 'data', set 'foo'(v) { } };
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|   var x = { set foo(v) { }, 'foo': 'data' };
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|   var x = { 'foo': 'data', set foo(v) { } };
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|   var x = { set 'foo'(v) { }, foo: 'data' };
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|   var x = { 'foo': 'data', set 'foo'(v) { } };
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|   var x = { set 'foo'(v) { }, 'foo': 'data' };
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|   var x = { 12: 1, set '12'(v){}};
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|   var x = { 12: 1, set 12(v){}};
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|   var x = { '12': 1, set '12'(v){}};
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|   var x = { '12': 1, set 12(v){}};
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| 
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|   // Getter and data
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|   var x = { foo: 'data', get foo() { } };
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|   var x = { get foo() { }, foo: 'data' };
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|   var x = { 'foo': 'data', get foo() { } };
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|   var x = { get 'foo'() { }, 'foo': 'data' };
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|   var x = { '12': 1, get '12'(){}};
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|   var x = { '12': 1, get 12(){}};
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| })();
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| 
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| // Assignment to eval or arguments
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| CheckStrictMode("function strict() { eval = undefined; }", SyntaxError);
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| CheckStrictMode("function strict() { arguments = undefined; }", SyntaxError);
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| CheckStrictMode("function strict() { print(eval = undefined); }", SyntaxError);
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| CheckStrictMode("function strict() { print(arguments = undefined); }",
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|                 SyntaxError);
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| CheckStrictMode("function strict() { var x = eval = undefined; }", SyntaxError);
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| CheckStrictMode("function strict() { var x = arguments = undefined; }",
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|                 SyntaxError);
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| 
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| // Compound assignment to eval or arguments
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| CheckStrictMode("function strict() { eval *= undefined; }", SyntaxError);
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| CheckStrictMode("function strict() { arguments /= undefined; }", SyntaxError);
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| CheckStrictMode("function strict() { print(eval %= undefined); }", SyntaxError);
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| CheckStrictMode("function strict() { print(arguments %= undefined); }",
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|                 SyntaxError);
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| CheckStrictMode("function strict() { var x = eval += undefined; }",
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|                 SyntaxError);
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| CheckStrictMode("function strict() { var x = arguments -= undefined; }",
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|                 SyntaxError);
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| CheckStrictMode("function strict() { eval <<= undefined; }", SyntaxError);
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| CheckStrictMode("function strict() { arguments >>= undefined; }", SyntaxError);
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| CheckStrictMode("function strict() { print(eval >>>= undefined); }",
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|                 SyntaxError);
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| CheckStrictMode("function strict() { print(arguments &= undefined); }",
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|                 SyntaxError);
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| CheckStrictMode("function strict() { var x = eval ^= undefined; }",
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|                 SyntaxError);
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| CheckStrictMode("function strict() { var x = arguments |= undefined; }",
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|                 SyntaxError);
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| 
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| // Postfix increment with eval or arguments
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| CheckStrictMode("function strict() { eval++; }", SyntaxError);
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| CheckStrictMode("function strict() { arguments++; }", SyntaxError);
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| CheckStrictMode("function strict() { print(eval++); }", SyntaxError);
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| CheckStrictMode("function strict() { print(arguments++); }", SyntaxError);
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| CheckStrictMode("function strict() { var x = eval++; }", SyntaxError);
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| CheckStrictMode("function strict() { var x = arguments++; }", SyntaxError);
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| 
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| // Postfix decrement with eval or arguments
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| CheckStrictMode("function strict() { eval--; }", SyntaxError);
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| CheckStrictMode("function strict() { arguments--; }", SyntaxError);
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| CheckStrictMode("function strict() { print(eval--); }", SyntaxError);
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| CheckStrictMode("function strict() { print(arguments--); }", SyntaxError);
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| CheckStrictMode("function strict() { var x = eval--; }", SyntaxError);
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| CheckStrictMode("function strict() { var x = arguments--; }", SyntaxError);
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| 
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| // Prefix increment with eval or arguments
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| CheckStrictMode("function strict() { ++eval; }", SyntaxError);
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| CheckStrictMode("function strict() { ++arguments; }", SyntaxError);
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| CheckStrictMode("function strict() { print(++eval); }", SyntaxError);
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| CheckStrictMode("function strict() { print(++arguments); }", SyntaxError);
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| CheckStrictMode("function strict() { var x = ++eval; }", SyntaxError);
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| CheckStrictMode("function strict() { var x = ++arguments; }", SyntaxError);
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| 
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| // Prefix decrement with eval or arguments
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| CheckStrictMode("function strict() { --eval; }", SyntaxError);
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| CheckStrictMode("function strict() { --arguments; }", SyntaxError);
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| CheckStrictMode("function strict() { print(--eval); }", SyntaxError);
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| CheckStrictMode("function strict() { print(--arguments); }", SyntaxError);
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| CheckStrictMode("function strict() { var x = --eval; }", SyntaxError);
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| CheckStrictMode("function strict() { var x = --arguments; }", SyntaxError);
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| 
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| // Delete of an unqualified identifier
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| CheckStrictMode("delete unqualified;", SyntaxError);
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| CheckStrictMode("function strict() { delete unqualified; }", SyntaxError);
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| CheckStrictMode("function function_name() { delete function_name; }",
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|                 SyntaxError);
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| CheckStrictMode("function strict(parameter) { delete parameter; }",
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|                 SyntaxError);
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| CheckStrictMode("function strict() { var variable; delete variable; }",
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|                 SyntaxError);
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| CheckStrictMode("var variable; delete variable;", SyntaxError);
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| 
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| (function TestStrictDelete() {
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|   "use strict";
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|   // "delete this" is allowed in strict mode and should work.
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|   function strict_delete() { delete this; }
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|   strict_delete();
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| })();
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| 
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| // Prefix unary operators other than delete, ++, -- are valid in strict mode
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| (function StrictModeUnaryOperators() {
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|   "use strict";
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|   var x = [void eval, typeof eval, +eval, -eval, ~eval, !eval];
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|   var y = [void arguments, typeof arguments,
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|            +arguments, -arguments, ~arguments, !arguments];
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| })();
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| 
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| // 7.6.1.2 Future Reserved Words in strict mode
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| var future_strict_reserved_words = [
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|   "implements",
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|   "interface",
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|   "let",
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|   "package",
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|   "private",
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|   "protected",
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|   "public",
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|   "static",
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|   "yield" ];
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| 
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| function testFutureStrictReservedWord(word) {
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|   // Simple use of each reserved word
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|   CheckStrictMode("var " + word + " = 1;", SyntaxError);
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|   CheckStrictMode("typeof (" + word + ");", SyntaxError);
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| 
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|   // object literal properties
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|   eval("var x = { " + word + " : 42 };");
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|   eval("var x = { get " + word + " () {} };");
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|   eval("var x = { set " + word + " (value) {} };");
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|   eval("var x = { get " + word + " () { 'use strict'; } };");
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|   eval("var x = { set " + word + " (value) { 'use strict'; } };");
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| 
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|   // object literal with string literal property names
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|   eval("var x = { '" + word + "' : 42 };");
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|   eval("var x = { get '" + word + "' () { } };");
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|   eval("var x = { set '" + word + "' (value) { } };");
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|   eval("var x = { get '" + word + "' () { 'use strict'; } };");
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|   eval("var x = { set '" + word + "' (value) { 'use strict'; } };");
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| 
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|   // Function names and arguments, strict and non-strict contexts
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|   CheckStrictMode("function " + word + " () {}", SyntaxError);
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|   CheckStrictMode("function foo (" + word + ") {}", SyntaxError);
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|   CheckStrictMode("function foo (" + word + ", " + word + ") {}", SyntaxError);
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|   CheckStrictMode("function foo (a, " + word + ") {}", SyntaxError);
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|   CheckStrictMode("function foo (" + word + ", a) {}", SyntaxError);
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|   CheckStrictMode("function foo (a, " + word + ", b) {}", SyntaxError);
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|   CheckStrictMode("var foo = function (" + word + ") {}", SyntaxError);
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| 
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|   // Function names and arguments when the body is strict
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|   assertThrows("function " + word + " () { 'use strict'; }", SyntaxError);
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|   assertThrows("function foo (" + word + ", " + word + ") { 'use strict'; }",
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|                SyntaxError);
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|   assertThrows("function foo (a, " + word + ") { 'use strict'; }", SyntaxError);
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|   assertThrows("function foo (" + word + ", a) { 'use strict'; }", SyntaxError);
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|   assertThrows("function foo (a, " + word + ", b) { 'use strict'; }",
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|                SyntaxError);
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|   assertThrows("var foo = function (" + word + ") { 'use strict'; }",
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|                SyntaxError);
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| 
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|   // setter parameter when the body is strict
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|   CheckStrictMode("var x = { set foo(" + word + ") {} };", SyntaxError);
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|   assertThrows("var x = { set foo(" + word + ") { 'use strict'; } };",
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|                SyntaxError);
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| }
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| 
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| for (var i = 0; i < future_strict_reserved_words.length; i++) {
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|   testFutureStrictReservedWord(future_strict_reserved_words[i]);
 | |
| }
 | |
| 
 | |
| function testAssignToUndefined(test, should_throw) {
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|   try {
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|     test();
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|   } catch (e) {
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|     assertTrue(should_throw, "strict mode");
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|     assertInstanceof(e, ReferenceError, "strict mode");
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|     return;
 | |
|   }
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|   assertFalse(should_throw, "strict mode");
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| }
 | |
| 
 | |
| function repeat(n, f) {
 | |
|   for (var i = 0; i < n; i ++) { f(); }
 | |
| }
 | |
| 
 | |
| function assignToUndefined() {
 | |
|   "use strict";
 | |
|   possibly_undefined_variable_for_strict_mode_test = "should throw?";
 | |
| }
 | |
| 
 | |
| testAssignToUndefined(assignToUndefined, true);
 | |
| testAssignToUndefined(assignToUndefined, true);
 | |
| testAssignToUndefined(assignToUndefined, true);
 | |
| 
 | |
| possibly_undefined_variable_for_strict_mode_test = "value";
 | |
| 
 | |
| testAssignToUndefined(assignToUndefined, false);
 | |
| testAssignToUndefined(assignToUndefined, false);
 | |
| testAssignToUndefined(assignToUndefined, false);
 | |
| 
 | |
| delete possibly_undefined_variable_for_strict_mode_test;
 | |
| 
 | |
| testAssignToUndefined(assignToUndefined, true);
 | |
| testAssignToUndefined(assignToUndefined, true);
 | |
| testAssignToUndefined(assignToUndefined, true);
 | |
| 
 | |
| repeat(10, function() { testAssignToUndefined(assignToUndefined, true); });
 | |
| possibly_undefined_variable_for_strict_mode_test = "value";
 | |
| repeat(10, function() { testAssignToUndefined(assignToUndefined, false); });
 | |
| delete possibly_undefined_variable_for_strict_mode_test;
 | |
| repeat(10, function() { testAssignToUndefined(assignToUndefined, true); });
 | |
| possibly_undefined_variable_for_strict_mode_test = undefined;
 | |
| repeat(10, function() { testAssignToUndefined(assignToUndefined, false); });
 | |
| 
 | |
| function assignToUndefinedWithEval() {
 | |
|   "use strict";
 | |
|   possibly_undefined_variable_for_strict_mode_test_with_eval = "should throw?";
 | |
|   eval("");
 | |
| }
 | |
| 
 | |
| testAssignToUndefined(assignToUndefinedWithEval, true);
 | |
| testAssignToUndefined(assignToUndefinedWithEval, true);
 | |
| testAssignToUndefined(assignToUndefinedWithEval, true);
 | |
| 
 | |
| possibly_undefined_variable_for_strict_mode_test_with_eval = "value";
 | |
| 
 | |
| testAssignToUndefined(assignToUndefinedWithEval, false);
 | |
| testAssignToUndefined(assignToUndefinedWithEval, false);
 | |
| testAssignToUndefined(assignToUndefinedWithEval, false);
 | |
| 
 | |
| delete possibly_undefined_variable_for_strict_mode_test_with_eval;
 | |
| 
 | |
| testAssignToUndefined(assignToUndefinedWithEval, true);
 | |
| testAssignToUndefined(assignToUndefinedWithEval, true);
 | |
| testAssignToUndefined(assignToUndefinedWithEval, true);
 | |
| 
 | |
| repeat(10, function() {
 | |
|              testAssignToUndefined(assignToUndefinedWithEval, true);
 | |
|            });
 | |
| possibly_undefined_variable_for_strict_mode_test_with_eval = "value";
 | |
| repeat(10, function() {
 | |
|              testAssignToUndefined(assignToUndefinedWithEval, false);
 | |
|            });
 | |
| delete possibly_undefined_variable_for_strict_mode_test_with_eval;
 | |
| repeat(10, function() {
 | |
|              testAssignToUndefined(assignToUndefinedWithEval, true);
 | |
|            });
 | |
| possibly_undefined_variable_for_strict_mode_test_with_eval = undefined;
 | |
| repeat(10, function() {
 | |
|              testAssignToUndefined(assignToUndefinedWithEval, false);
 | |
|            });
 | |
| 
 | |
| 
 | |
| 
 | |
| (function testDeleteNonConfigurable() {
 | |
|   function delete_property(o) {
 | |
|     "use strict";
 | |
|     delete o.property;
 | |
|   }
 | |
|   function delete_element(o, i) {
 | |
|     "use strict";
 | |
|     delete o[i];
 | |
|   }
 | |
| 
 | |
|   var object = {};
 | |
| 
 | |
|   Object.defineProperty(object, "property", { value: "property_value" });
 | |
|   Object.defineProperty(object, "1", { value: "one" });
 | |
|   Object.defineProperty(object, 7, { value: "seven" });
 | |
|   Object.defineProperty(object, 3.14, { value: "pi" });
 | |
| 
 | |
|   assertThrows(function() { delete_property(object); }, TypeError);
 | |
|   assertEquals(object.property, "property_value");
 | |
|   assertThrows(function() { delete_element(object, "1"); }, TypeError);
 | |
|   assertThrows(function() { delete_element(object, 1); }, TypeError);
 | |
|   assertEquals(object[1], "one");
 | |
|   assertThrows(function() { delete_element(object, "7"); }, TypeError);
 | |
|   assertThrows(function() { delete_element(object, 7); }, TypeError);
 | |
|   assertEquals(object[7], "seven");
 | |
|   assertThrows(function() { delete_element(object, "3.14"); }, TypeError);
 | |
|   assertThrows(function() { delete_element(object, 3.14); }, TypeError);
 | |
|   assertEquals(object[3.14], "pi");
 | |
| })();
 | |
| 
 | |
| // Not transforming this in Function.call and Function.apply.
 | |
| (function testThisTransformCallApply() {
 | |
|   function non_strict() {
 | |
|     return this;
 | |
|   }
 | |
|   function strict() {
 | |
|     "use strict";
 | |
|     return this;
 | |
|   }
 | |
| 
 | |
|   var global_object = (function() { return this; })();
 | |
|   var object = {};
 | |
| 
 | |
|   // Non-strict call.
 | |
|   assertTrue(non_strict.call(null) === global_object);
 | |
|   assertTrue(non_strict.call(undefined) === global_object);
 | |
|   assertEquals(typeof non_strict.call(7), "object");
 | |
|   assertEquals(typeof non_strict.call("Hello"), "object");
 | |
|   assertTrue(non_strict.call(object) === object);
 | |
| 
 | |
|   // Non-strict apply.
 | |
|   assertTrue(non_strict.apply(null) === global_object);
 | |
|   assertTrue(non_strict.apply(undefined) === global_object);
 | |
|   assertEquals(typeof non_strict.apply(7), "object");
 | |
|   assertEquals(typeof non_strict.apply("Hello"), "object");
 | |
|   assertTrue(non_strict.apply(object) === object);
 | |
| 
 | |
|   // Strict call.
 | |
|   assertTrue(strict.call(null) === null);
 | |
|   assertTrue(strict.call(undefined) === undefined);
 | |
|   assertEquals(typeof strict.call(7), "number");
 | |
|   assertEquals(typeof strict.call("Hello"), "string");
 | |
|   assertTrue(strict.call(object) === object);
 | |
| 
 | |
|   // Strict apply.
 | |
|   assertTrue(strict.apply(null) === null);
 | |
|   assertTrue(strict.apply(undefined) === undefined);
 | |
|   assertEquals(typeof strict.apply(7), "number");
 | |
|   assertEquals(typeof strict.apply("Hello"), "string");
 | |
|   assertTrue(strict.apply(object) === object);
 | |
| })();
 | |
| 
 | |
| (function testThisTransform() {
 | |
|   try {
 | |
|     function strict() {
 | |
|       "use strict";
 | |
|       return typeof(this);
 | |
|     }
 | |
|     function nonstrict() {
 | |
|       return typeof(this);
 | |
|     }
 | |
| 
 | |
|     // Concat to avoid symbol.
 | |
|     var strict_name = "str" + "ict";
 | |
|     var nonstrict_name = "non" + "str" + "ict";
 | |
|     var strict_number = 17;
 | |
|     var nonstrict_number = 19;
 | |
|     var strict_name_get = "str" + "ict" + "get";
 | |
|     var nonstrict_name_get = "non" + "str" + "ict" + "get"
 | |
|     var strict_number_get = 23;
 | |
|     var nonstrict_number_get = 29;
 | |
| 
 | |
|     function install(t) {
 | |
|       t.prototype.strict = strict;
 | |
|       t.prototype.nonstrict = nonstrict;
 | |
|       t.prototype[strict_number] = strict;
 | |
|       t.prototype[nonstrict_number] = nonstrict;
 | |
|       Object.defineProperty(t.prototype, strict_name_get,
 | |
|                             { get: function() { return strict; },
 | |
|                               configurable: true });
 | |
|       Object.defineProperty(t.prototype, nonstrict_name_get,
 | |
|                             { get: function() { return nonstrict; },
 | |
|                               configurable: true });
 | |
|       Object.defineProperty(t.prototype, strict_number_get,
 | |
|                             { get: function() { return strict; },
 | |
|                               configurable: true });
 | |
|       Object.defineProperty(t.prototype, nonstrict_number_get,
 | |
|                             { get: function() { return nonstrict; },
 | |
|                               configurable: true });
 | |
|     }
 | |
| 
 | |
|     function cleanup(t) {
 | |
|       delete t.prototype.strict;
 | |
|       delete t.prototype.nonstrict;
 | |
|       delete t.prototype[strict_number];
 | |
|       delete t.prototype[nonstrict_number];
 | |
|       delete t.prototype[strict_name_get];
 | |
|       delete t.prototype[nonstrict_name_get];
 | |
|       delete t.prototype[strict_number_get];
 | |
|       delete t.prototype[nonstrict_number_get];
 | |
|     }
 | |
| 
 | |
|     // Set up fakes
 | |
|     install(String);
 | |
|     install(Number);
 | |
|     install(Boolean)
 | |
| 
 | |
|     function callStrict(o) {
 | |
|       return o.strict();
 | |
|     }
 | |
|     function callNonStrict(o) {
 | |
|       return o.nonstrict();
 | |
|     }
 | |
|     function callKeyedStrict(o) {
 | |
|       return o[strict_name]();
 | |
|     }
 | |
|     function callKeyedNonStrict(o) {
 | |
|       return o[nonstrict_name]();
 | |
|     }
 | |
|     function callIndexedStrict(o) {
 | |
|       return o[strict_number]();
 | |
|     }
 | |
|     function callIndexedNonStrict(o) {
 | |
|       return o[nonstrict_number]();
 | |
|     }
 | |
|     function callStrictGet(o) {
 | |
|       return o.strictget();
 | |
|     }
 | |
|     function callNonStrictGet(o) {
 | |
|       return o.nonstrictget();
 | |
|     }
 | |
|     function callKeyedStrictGet(o) {
 | |
|       return o[strict_name_get]();
 | |
|     }
 | |
|     function callKeyedNonStrictGet(o) {
 | |
|       return o[nonstrict_name_get]();
 | |
|     }
 | |
|     function callIndexedStrictGet(o) {
 | |
|       return o[strict_number_get]();
 | |
|     }
 | |
|     function callIndexedNonStrictGet(o) {
 | |
|       return o[nonstrict_number_get]();
 | |
|     }
 | |
| 
 | |
|     for (var i = 0; i < 10; i ++) {
 | |
|       assertEquals(("hello").strict(), "string");
 | |
|       assertEquals(("hello").nonstrict(), "object");
 | |
|       assertEquals(("hello")[strict_name](), "string");
 | |
|       assertEquals(("hello")[nonstrict_name](), "object");
 | |
|       assertEquals(("hello")[strict_number](), "string");
 | |
|       assertEquals(("hello")[nonstrict_number](), "object");
 | |
| 
 | |
|       assertEquals((10 + i).strict(), "number");
 | |
|       assertEquals((10 + i).nonstrict(), "object");
 | |
|       assertEquals((10 + i)[strict_name](), "number");
 | |
|       assertEquals((10 + i)[nonstrict_name](), "object");
 | |
|       assertEquals((10 + i)[strict_number](), "number");
 | |
|       assertEquals((10 + i)[nonstrict_number](), "object");
 | |
| 
 | |
|       assertEquals((true).strict(), "boolean");
 | |
|       assertEquals((true).nonstrict(), "object");
 | |
|       assertEquals((true)[strict_name](), "boolean");
 | |
|       assertEquals((true)[nonstrict_name](), "object");
 | |
|       assertEquals((true)[strict_number](), "boolean");
 | |
|       assertEquals((true)[nonstrict_number](), "object");
 | |
| 
 | |
|       assertEquals((false).strict(), "boolean");
 | |
|       assertEquals((false).nonstrict(), "object");
 | |
|       assertEquals((false)[strict_name](), "boolean");
 | |
|       assertEquals((false)[nonstrict_name](), "object");
 | |
|       assertEquals((false)[strict_number](), "boolean");
 | |
|       assertEquals((false)[nonstrict_number](), "object");
 | |
| 
 | |
|       assertEquals(callStrict("howdy"), "string");
 | |
|       assertEquals(callNonStrict("howdy"), "object");
 | |
|       assertEquals(callKeyedStrict("howdy"), "string");
 | |
|       assertEquals(callKeyedNonStrict("howdy"), "object");
 | |
|       assertEquals(callIndexedStrict("howdy"), "string");
 | |
|       assertEquals(callIndexedNonStrict("howdy"), "object");
 | |
| 
 | |
|       assertEquals(callStrict(17 + i), "number");
 | |
|       assertEquals(callNonStrict(17 + i), "object");
 | |
|       assertEquals(callKeyedStrict(17 + i), "number");
 | |
|       assertEquals(callKeyedNonStrict(17 + i), "object");
 | |
|       assertEquals(callIndexedStrict(17 + i), "number");
 | |
|       assertEquals(callIndexedNonStrict(17 + i), "object");
 | |
| 
 | |
|       assertEquals(callStrict(true), "boolean");
 | |
|       assertEquals(callNonStrict(true), "object");
 | |
|       assertEquals(callKeyedStrict(true), "boolean");
 | |
|       assertEquals(callKeyedNonStrict(true), "object");
 | |
|       assertEquals(callIndexedStrict(true), "boolean");
 | |
|       assertEquals(callIndexedNonStrict(true), "object");
 | |
| 
 | |
|       assertEquals(callStrict(false), "boolean");
 | |
|       assertEquals(callNonStrict(false), "object");
 | |
|       assertEquals(callKeyedStrict(false), "boolean");
 | |
|       assertEquals(callKeyedNonStrict(false), "object");
 | |
|       assertEquals(callIndexedStrict(false), "boolean");
 | |
|       assertEquals(callIndexedNonStrict(false), "object");
 | |
| 
 | |
|       // All of the above, with getters
 | |
|       assertEquals(("hello").strictget(), "string");
 | |
|       assertEquals(("hello").nonstrictget(), "object");
 | |
|       assertEquals(("hello")[strict_name_get](), "string");
 | |
|       assertEquals(("hello")[nonstrict_name_get](), "object");
 | |
|       assertEquals(("hello")[strict_number_get](), "string");
 | |
|       assertEquals(("hello")[nonstrict_number_get](), "object");
 | |
| 
 | |
|       assertEquals((10 + i).strictget(), "number");
 | |
|       assertEquals((10 + i).nonstrictget(), "object");
 | |
|       assertEquals((10 + i)[strict_name_get](), "number");
 | |
|       assertEquals((10 + i)[nonstrict_name_get](), "object");
 | |
|       assertEquals((10 + i)[strict_number_get](), "number");
 | |
|       assertEquals((10 + i)[nonstrict_number_get](), "object");
 | |
| 
 | |
|       assertEquals((true).strictget(), "boolean");
 | |
|       assertEquals((true).nonstrictget(), "object");
 | |
|       assertEquals((true)[strict_name_get](), "boolean");
 | |
|       assertEquals((true)[nonstrict_name_get](), "object");
 | |
|       assertEquals((true)[strict_number_get](), "boolean");
 | |
|       assertEquals((true)[nonstrict_number_get](), "object");
 | |
| 
 | |
|       assertEquals((false).strictget(), "boolean");
 | |
|       assertEquals((false).nonstrictget(), "object");
 | |
|       assertEquals((false)[strict_name_get](), "boolean");
 | |
|       assertEquals((false)[nonstrict_name_get](), "object");
 | |
|       assertEquals((false)[strict_number_get](), "boolean");
 | |
|       assertEquals((false)[nonstrict_number_get](), "object");
 | |
| 
 | |
|       assertEquals(callStrictGet("howdy"), "string");
 | |
|       assertEquals(callNonStrictGet("howdy"), "object");
 | |
|       assertEquals(callKeyedStrictGet("howdy"), "string");
 | |
|       assertEquals(callKeyedNonStrictGet("howdy"), "object");
 | |
|       assertEquals(callIndexedStrictGet("howdy"), "string");
 | |
|       assertEquals(callIndexedNonStrictGet("howdy"), "object");
 | |
| 
 | |
|       assertEquals(callStrictGet(17 + i), "number");
 | |
|       assertEquals(callNonStrictGet(17 + i), "object");
 | |
|       assertEquals(callKeyedStrictGet(17 + i), "number");
 | |
|       assertEquals(callKeyedNonStrictGet(17 + i), "object");
 | |
|       assertEquals(callIndexedStrictGet(17 + i), "number");
 | |
|       assertEquals(callIndexedNonStrictGet(17 + i), "object");
 | |
| 
 | |
|       assertEquals(callStrictGet(true), "boolean");
 | |
|       assertEquals(callNonStrictGet(true), "object");
 | |
|       assertEquals(callKeyedStrictGet(true), "boolean");
 | |
|       assertEquals(callKeyedNonStrictGet(true), "object");
 | |
|       assertEquals(callIndexedStrictGet(true), "boolean");
 | |
|       assertEquals(callIndexedNonStrictGet(true), "object");
 | |
| 
 | |
|       assertEquals(callStrictGet(false), "boolean");
 | |
|       assertEquals(callNonStrictGet(false), "object");
 | |
|       assertEquals(callKeyedStrictGet(false), "boolean");
 | |
|       assertEquals(callKeyedNonStrictGet(false), "object");
 | |
|       assertEquals(callIndexedStrictGet(false), "boolean");
 | |
|       assertEquals(callIndexedNonStrictGet(false), "object");
 | |
| 
 | |
|     }
 | |
|   } finally {
 | |
|     // Cleanup
 | |
|     cleanup(String);
 | |
|     cleanup(Number);
 | |
|     cleanup(Boolean);
 | |
|   }
 | |
| })();
 | |
| 
 | |
| 
 | |
| (function ObjectEnvironment() {
 | |
|   var o = {};
 | |
|   Object.defineProperty(o, "foo", { value: "FOO", writable: false });
 | |
|   assertThrows(
 | |
|     function () {
 | |
|       with (o) {
 | |
|         (function() {
 | |
|           "use strict";
 | |
|           foo = "Hello";
 | |
|         })();
 | |
|       }
 | |
|     },
 | |
|     TypeError);
 | |
| })();
 | |
| 
 | |
| 
 | |
| (function TestSetPropertyWithoutSetter() {
 | |
|   var o = { get foo() { return "Yey"; } };
 | |
|   assertThrows(
 | |
|     function broken() {
 | |
|       "use strict";
 | |
|       o.foo = (0xBADBAD00 >> 1);
 | |
|     },
 | |
|     TypeError);
 | |
| })();
 | |
| 
 | |
| 
 | |
| (function TestSetPropertyNonConfigurable() {
 | |
|   var frozen = Object.freeze({});
 | |
|   var sealed = Object.seal({});
 | |
| 
 | |
|   function strict(o) {
 | |
|     "use strict";
 | |
|     o.property = "value";
 | |
|   }
 | |
| 
 | |
|   assertThrows(function() { strict(frozen); }, TypeError);
 | |
|   assertThrows(function() { strict(sealed); }, TypeError);
 | |
| })();
 | |
| 
 | |
| 
 | |
| (function TestAssignmentToReadOnlyProperty() {
 | |
|   "use strict";
 | |
| 
 | |
|   var o = {};
 | |
|   Object.defineProperty(o, "property", { value: 7 });
 | |
| 
 | |
|   assertThrows(function() { o.property = "new value"; }, TypeError);
 | |
|   assertThrows(function() { o.property += 10; }, TypeError);
 | |
|   assertThrows(function() { o.property -= 10; }, TypeError);
 | |
|   assertThrows(function() { o.property *= 10; }, TypeError);
 | |
|   assertThrows(function() { o.property /= 10; }, TypeError);
 | |
|   assertThrows(function() { o.property++; }, TypeError);
 | |
|   assertThrows(function() { o.property--; }, TypeError);
 | |
|   assertThrows(function() { ++o.property; }, TypeError);
 | |
|   assertThrows(function() { --o.property; }, TypeError);
 | |
| 
 | |
|   var name = "prop" + "erty"; // to avoid symbol path.
 | |
|   assertThrows(function() { o[name] = "new value"; }, TypeError);
 | |
|   assertThrows(function() { o[name] += 10; }, TypeError);
 | |
|   assertThrows(function() { o[name] -= 10; }, TypeError);
 | |
|   assertThrows(function() { o[name] *= 10; }, TypeError);
 | |
|   assertThrows(function() { o[name] /= 10; }, TypeError);
 | |
|   assertThrows(function() { o[name]++; }, TypeError);
 | |
|   assertThrows(function() { o[name]--; }, TypeError);
 | |
|   assertThrows(function() { ++o[name]; }, TypeError);
 | |
|   assertThrows(function() { --o[name]; }, TypeError);
 | |
| 
 | |
|   assertEquals(o.property, 7);
 | |
| })();
 | |
| 
 | |
| 
 | |
| (function TestAssignmentToReadOnlyLoop() {
 | |
|   var name = "prop" + "erty"; // to avoid symbol path.
 | |
|   var o = {};
 | |
|   Object.defineProperty(o, "property", { value: 7 });
 | |
| 
 | |
|   function strict(o, name) {
 | |
|     "use strict";
 | |
|     o[name] = "new value";
 | |
|   }
 | |
| 
 | |
|   for (var i = 0; i < 10; i ++) {
 | |
|     var exception = false;
 | |
|     try {
 | |
|       strict(o, name);
 | |
|     } catch(e) {
 | |
|       exception = true;
 | |
|       assertInstanceof(e, TypeError);
 | |
|     }
 | |
|     assertTrue(exception);
 | |
|   }
 | |
| })();
 | |
| 
 | |
| 
 | |
| // Specialized KeyedStoreIC experiencing miss.
 | |
| (function testKeyedStoreICStrict() {
 | |
|   var o = [9,8,7,6,5,4,3,2,1];
 | |
| 
 | |
|   function test(o, i, v) {
 | |
|     "use strict";
 | |
|     o[i] = v;
 | |
|   }
 | |
| 
 | |
|   for (var i = 0; i < 10; i ++) {
 | |
|     test(o, 5, 17);        // start specialized for smi indices
 | |
|     assertEquals(o[5], 17);
 | |
|     test(o, "a", 19);
 | |
|     assertEquals(o["a"], 19);
 | |
|     test(o, "5", 29);
 | |
|     assertEquals(o[5], 29);
 | |
|     test(o, 100000, 31);
 | |
|     assertEquals(o[100000], 31);
 | |
|   }
 | |
| })();
 | |
| 
 | |
| 
 | |
| (function TestSetElementWithoutSetter() {
 | |
|   "use strict";
 | |
| 
 | |
|   var o = { };
 | |
|   Object.defineProperty(o, 0, { get : function() { } });
 | |
| 
 | |
|   var zero_smi = 0;
 | |
|   var zero_number = new Number(0);
 | |
|   var zero_symbol = "0";
 | |
|   var zero_string = "-0-".substring(1,2);
 | |
| 
 | |
|   assertThrows(function() { o[zero_smi] = "new value"; }, TypeError);
 | |
|   assertThrows(function() { o[zero_number] = "new value"; }, TypeError);
 | |
|   assertThrows(function() { o[zero_symbol] = "new value"; }, TypeError);
 | |
|   assertThrows(function() { o[zero_string] = "new value"; }, TypeError);
 | |
| })();
 | |
| 
 | |
| 
 | |
| (function TestSetElementNonConfigurable() {
 | |
|   "use strict";
 | |
|   var frozen = Object.freeze({});
 | |
|   var sealed = Object.seal({});
 | |
| 
 | |
|   var zero_number = 0;
 | |
|   var zero_symbol = "0";
 | |
|   var zero_string = "-0-".substring(1,2);
 | |
| 
 | |
|   assertThrows(function() { frozen[zero_number] = "value"; }, TypeError);
 | |
|   assertThrows(function() { sealed[zero_number] = "value"; }, TypeError);
 | |
|   assertThrows(function() { frozen[zero_symbol] = "value"; }, TypeError);
 | |
|   assertThrows(function() { sealed[zero_symbol] = "value"; }, TypeError);
 | |
|   assertThrows(function() { frozen[zero_string] = "value"; }, TypeError);
 | |
|   assertThrows(function() { sealed[zero_string] = "value"; }, TypeError);
 | |
| })();
 | |
| 
 | |
| 
 | |
| (function TestAssignmentToReadOnlyElement() {
 | |
|   "use strict";
 | |
| 
 | |
|   var o = {};
 | |
|   Object.defineProperty(o, 7, { value: 17 });
 | |
| 
 | |
|   var seven_smi = 7;
 | |
|   var seven_number = new Number(7);
 | |
|   var seven_symbol = "7";
 | |
|   var seven_string = "-7-".substring(1,2);
 | |
| 
 | |
|   // Index with number.
 | |
|   assertThrows(function() { o[seven_smi] = "value"; }, TypeError);
 | |
|   assertThrows(function() { o[seven_smi] += 10; }, TypeError);
 | |
|   assertThrows(function() { o[seven_smi] -= 10; }, TypeError);
 | |
|   assertThrows(function() { o[seven_smi] *= 10; }, TypeError);
 | |
|   assertThrows(function() { o[seven_smi] /= 10; }, TypeError);
 | |
|   assertThrows(function() { o[seven_smi]++; }, TypeError);
 | |
|   assertThrows(function() { o[seven_smi]--; }, TypeError);
 | |
|   assertThrows(function() { ++o[seven_smi]; }, TypeError);
 | |
|   assertThrows(function() { --o[seven_smi]; }, TypeError);
 | |
| 
 | |
|   assertThrows(function() { o[seven_number] = "value"; }, TypeError);
 | |
|   assertThrows(function() { o[seven_number] += 10; }, TypeError);
 | |
|   assertThrows(function() { o[seven_number] -= 10; }, TypeError);
 | |
|   assertThrows(function() { o[seven_number] *= 10; }, TypeError);
 | |
|   assertThrows(function() { o[seven_number] /= 10; }, TypeError);
 | |
|   assertThrows(function() { o[seven_number]++; }, TypeError);
 | |
|   assertThrows(function() { o[seven_number]--; }, TypeError);
 | |
|   assertThrows(function() { ++o[seven_number]; }, TypeError);
 | |
|   assertThrows(function() { --o[seven_number]; }, TypeError);
 | |
| 
 | |
|   assertThrows(function() { o[seven_symbol] = "value"; }, TypeError);
 | |
|   assertThrows(function() { o[seven_symbol] += 10; }, TypeError);
 | |
|   assertThrows(function() { o[seven_symbol] -= 10; }, TypeError);
 | |
|   assertThrows(function() { o[seven_symbol] *= 10; }, TypeError);
 | |
|   assertThrows(function() { o[seven_symbol] /= 10; }, TypeError);
 | |
|   assertThrows(function() { o[seven_symbol]++; }, TypeError);
 | |
|   assertThrows(function() { o[seven_symbol]--; }, TypeError);
 | |
|   assertThrows(function() { ++o[seven_symbol]; }, TypeError);
 | |
|   assertThrows(function() { --o[seven_symbol]; }, TypeError);
 | |
| 
 | |
|   assertThrows(function() { o[seven_string] = "value"; }, TypeError);
 | |
|   assertThrows(function() { o[seven_string] += 10; }, TypeError);
 | |
|   assertThrows(function() { o[seven_string] -= 10; }, TypeError);
 | |
|   assertThrows(function() { o[seven_string] *= 10; }, TypeError);
 | |
|   assertThrows(function() { o[seven_string] /= 10; }, TypeError);
 | |
|   assertThrows(function() { o[seven_string]++; }, TypeError);
 | |
|   assertThrows(function() { o[seven_string]--; }, TypeError);
 | |
|   assertThrows(function() { ++o[seven_string]; }, TypeError);
 | |
|   assertThrows(function() { --o[seven_string]; }, TypeError);
 | |
| 
 | |
|   assertEquals(o[seven_number], 17);
 | |
|   assertEquals(o[seven_symbol], 17);
 | |
|   assertEquals(o[seven_string], 17);
 | |
| })();
 | |
| 
 | |
| 
 | |
| (function TestAssignmentToReadOnlyLoop() {
 | |
|   "use strict";
 | |
| 
 | |
|   var o = {};
 | |
|   Object.defineProperty(o, 7, { value: 17 });
 | |
| 
 | |
|   var seven_smi = 7;
 | |
|   var seven_number = new Number(7);
 | |
|   var seven_symbol = "7";
 | |
|   var seven_string = "-7-".substring(1,2);
 | |
| 
 | |
|   for (var i = 0; i < 10; i ++) {
 | |
|     assertThrows(function() { o[seven_smi] = "value" }, TypeError);
 | |
|     assertThrows(function() { o[seven_number] = "value" }, TypeError);
 | |
|     assertThrows(function() { o[seven_symbol] = "value" }, TypeError);
 | |
|     assertThrows(function() { o[seven_string] = "value" }, TypeError);
 | |
|   }
 | |
| 
 | |
|   assertEquals(o[7], 17);
 | |
| })();
 | |
| 
 | |
| 
 | |
| (function TestAssignmentToStringLength() {
 | |
|   "use strict";
 | |
| 
 | |
|   var str_val = "string";
 | |
|   var str_obj = new String(str_val);
 | |
|   var str_cat = str_val + str_val + str_obj;
 | |
| 
 | |
|   assertThrows(function() { str_val.length = 1; }, TypeError);
 | |
|   assertThrows(function() { str_obj.length = 1; }, TypeError);
 | |
|   assertThrows(function() { str_cat.length = 1; }, TypeError);
 | |
| })();
 | |
| 
 | |
| 
 | |
| (function TestArgumentsAliasing() {
 | |
|   function strict(a, b) {
 | |
|     "use strict";
 | |
|     a = "c";
 | |
|     b = "d";
 | |
|     return [a, b, arguments[0], arguments[1]];
 | |
|   }
 | |
| 
 | |
|   function nonstrict(a, b) {
 | |
|     a = "c";
 | |
|     b = "d";
 | |
|     return [a, b, arguments[0], arguments[1]];
 | |
|   }
 | |
| 
 | |
|   assertEquals(["c", "d", "a", "b"], strict("a", "b"));
 | |
|   assertEquals(["c", "d", "c", "d"], nonstrict("a", "b"));
 | |
| })();
 | |
| 
 | |
| 
 | |
| function CheckFunctionPillDescriptor(func, name) {
 | |
| 
 | |
|   function CheckPill(pill) {
 | |
|     assertEquals("function", typeof pill);
 | |
|     assertInstanceof(pill, Function);
 | |
|     pill.property = "value";
 | |
|     assertEquals(pill.value, undefined);
 | |
|     assertThrows(function() { 'use strict'; pill.property = "value"; },
 | |
|                  TypeError);
 | |
|     assertThrows(pill, TypeError);
 | |
|     assertEquals(undefined, pill.prototype);
 | |
|   }
 | |
| 
 | |
|   // Poisoned accessors are no longer own properties
 | |
|   func = Object.getPrototypeOf(func);
 | |
|   var descriptor = Object.getOwnPropertyDescriptor(func, name);
 | |
|   CheckPill(descriptor.get)
 | |
|   CheckPill(descriptor.set);
 | |
|   assertFalse(descriptor.enumerable);
 | |
|   // In ES6, restricted function properties are configurable
 | |
|   assertTrue(descriptor.configurable);
 | |
| }
 | |
| 
 | |
| 
 | |
| function CheckArgumentsPillDescriptor(func, name) {
 | |
| 
 | |
|   function CheckPill(pill) {
 | |
|     assertEquals("function", typeof pill);
 | |
|     assertInstanceof(pill, Function);
 | |
|     pill.property = "value";
 | |
|     assertEquals(pill.value, undefined);
 | |
|     assertThrows(function() { 'use strict'; pill.property = "value"; },
 | |
|                  TypeError);
 | |
|     assertThrows(pill, TypeError);
 | |
|     assertEquals(undefined, pill.prototype);
 | |
|   }
 | |
| 
 | |
|   var descriptor = Object.getOwnPropertyDescriptor(func, name);
 | |
|   CheckPill(descriptor.get)
 | |
|   CheckPill(descriptor.set);
 | |
|   assertFalse(descriptor.enumerable);
 | |
|   assertFalse(descriptor.configurable);
 | |
| }
 | |
| 
 | |
| 
 | |
| (function TestStrictFunctionPills() {
 | |
|   function strict() {
 | |
|     "use strict";
 | |
|   }
 | |
|   assertThrows(function() { strict.caller; }, TypeError);
 | |
|   assertThrows(function() { strict.arguments; }, TypeError);
 | |
|   assertThrows(function() { strict.caller = 42; }, TypeError);
 | |
|   assertThrows(function() { strict.arguments = 42; }, TypeError);
 | |
| 
 | |
|   var another = new Function("'use strict'");
 | |
|   assertThrows(function() { another.caller; }, TypeError);
 | |
|   assertThrows(function() { another.arguments; }, TypeError);
 | |
|   assertThrows(function() { another.caller = 42; }, TypeError);
 | |
|   assertThrows(function() { another.arguments = 42; }, TypeError);
 | |
| 
 | |
|   var third = (function() { "use strict"; return function() {}; })();
 | |
|   assertThrows(function() { third.caller; }, TypeError);
 | |
|   assertThrows(function() { third.arguments; }, TypeError);
 | |
|   assertThrows(function() { third.caller = 42; }, TypeError);
 | |
|   assertThrows(function() { third.arguments = 42; }, TypeError);
 | |
| 
 | |
|   CheckFunctionPillDescriptor(strict, "caller");
 | |
|   CheckFunctionPillDescriptor(strict, "arguments");
 | |
|   CheckFunctionPillDescriptor(another, "caller");
 | |
|   CheckFunctionPillDescriptor(another, "arguments");
 | |
|   CheckFunctionPillDescriptor(third, "caller");
 | |
|   CheckFunctionPillDescriptor(third, "arguments");
 | |
| })();
 | |
| 
 | |
| 
 | |
| (function TestStrictFunctionWritablePrototype() {
 | |
|   "use strict";
 | |
|   function TheClass() {
 | |
|   }
 | |
|   assertThrows(function() { TheClass.caller; }, TypeError);
 | |
|   assertThrows(function() { TheClass.arguments; }, TypeError);
 | |
| 
 | |
|   // Strict functions must have writable prototype.
 | |
|   TheClass.prototype = {
 | |
|     func: function() { return "func_value"; },
 | |
|     get accessor() { return "accessor_value"; },
 | |
|     property: "property_value",
 | |
|   };
 | |
| 
 | |
|   var o = new TheClass();
 | |
|   assertEquals(o.func(), "func_value");
 | |
|   assertEquals(o.accessor, "accessor_value");
 | |
|   assertEquals(o.property, "property_value");
 | |
| })();
 | |
| 
 | |
| 
 | |
| (function TestStrictArgumentPills() {
 | |
|   function strict() {
 | |
|     "use strict";
 | |
|     return arguments;
 | |
|   }
 | |
| 
 | |
|   var args = strict();
 | |
|   assertEquals(undefined, Object.getOwnPropertyDescriptor(args, "caller"));
 | |
|   CheckArgumentsPillDescriptor(args, "callee");
 | |
| 
 | |
|   args = strict(17, "value", strict);
 | |
|   assertEquals(17, args[0])
 | |
|   assertEquals("value", args[1])
 | |
|   assertEquals(strict, args[2]);
 | |
|   assertEquals(undefined, Object.getOwnPropertyDescriptor(args, "caller"));
 | |
|   CheckArgumentsPillDescriptor(args, "callee");
 | |
| 
 | |
|   function outer() {
 | |
|     "use strict";
 | |
|     function inner() {
 | |
|       return arguments;
 | |
|     }
 | |
|     return inner;
 | |
|   }
 | |
| 
 | |
|   var args = outer()();
 | |
|   assertEquals(undefined, Object.getOwnPropertyDescriptor(args, "caller"));
 | |
|   CheckArgumentsPillDescriptor(args, "callee");
 | |
| 
 | |
|   args = outer()(17, "value", strict);
 | |
|   assertEquals(17, args[0])
 | |
|   assertEquals("value", args[1])
 | |
|   assertEquals(strict, args[2]);
 | |
|   assertEquals(undefined, Object.getOwnPropertyDescriptor(args, "caller"));
 | |
|   CheckArgumentsPillDescriptor(args, "callee");
 | |
| })();
 | |
| 
 | |
| 
 | |
| (function TestNonStrictFunctionCallerPillSimple() {
 | |
|   function return_my_caller() {
 | |
|     return return_my_caller.caller;
 | |
|   }
 | |
| 
 | |
|   function strict() {
 | |
|     "use strict";
 | |
|     // Returning result via local variable to avoid tail call elimination.
 | |
|     var res = return_my_caller();
 | |
|     return res;
 | |
|   }
 | |
|   assertSame(null, strict());
 | |
| 
 | |
|   function non_strict() {
 | |
|     return return_my_caller();
 | |
|   }
 | |
|   assertSame(non_strict(), non_strict);
 | |
| })();
 | |
| 
 | |
| 
 | |
| (function TestNonStrictFunctionCallerPill() {
 | |
|   function strict(n) {
 | |
|     "use strict";
 | |
|     // Returning result via local variable to avoid tail call elimination.
 | |
|     var res = non_strict(n);
 | |
|     return res;
 | |
|   }
 | |
| 
 | |
|   function recurse(n, then) {
 | |
|     if (n > 0) {
 | |
|       return recurse(n - 1, then);
 | |
|     } else {
 | |
|       return then();
 | |
|     }
 | |
|   }
 | |
| 
 | |
|   function non_strict(n) {
 | |
|     return recurse(n, function() { return non_strict.caller; });
 | |
|   }
 | |
| 
 | |
|   function test(n) {
 | |
|     return recurse(n, function() { return strict(n); });
 | |
|   }
 | |
| 
 | |
|   for (var i = 0; i < 10; i ++) {
 | |
|     assertSame(null, test(i));
 | |
|   }
 | |
| })();
 | |
| 
 | |
| 
 | |
| (function TestNonStrictFunctionCallerDescriptorPill() {
 | |
|   function strict(n) {
 | |
|     "use strict";
 | |
|     // Returning result via local variable to avoid tail call elimination.
 | |
|     var res = non_strict(n);
 | |
|     return res;
 | |
|   }
 | |
| 
 | |
|   function recurse(n, then) {
 | |
|     if (n > 0) {
 | |
|       return recurse(n - 1, then);
 | |
|     } else {
 | |
|       return then();
 | |
|     }
 | |
|   }
 | |
| 
 | |
|   function non_strict(n) {
 | |
|     return recurse(n, function() {
 | |
|       return Object.getOwnPropertyDescriptor(non_strict, "caller").value;
 | |
|     });
 | |
|   }
 | |
| 
 | |
|   function test(n) {
 | |
|     return recurse(n, function() { return strict(n); });
 | |
|   }
 | |
| 
 | |
|   for (var i = 0; i < 10; i ++) {
 | |
|     assertSame(null, test(i));
 | |
|   }
 | |
| })();
 | |
| 
 | |
| 
 | |
| (function TestStrictModeEval() {
 | |
|   "use strict";
 | |
|   eval("var eval_local = 10;");
 | |
|   assertThrows(function() { return eval_local; }, ReferenceError);
 | |
| })();
 |