func-if-decl-else-stmt-eval-func-init.js (1748B)
1 // This file was procedurally generated from the following sources: 2 // - src/annex-b-fns/eval-func-init.case 3 // - src/annex-b-fns/eval-func/direct-if-decl-else-stmt.template 4 /*--- 5 description: Variable binding is initialized to `undefined` in outer scope (IfStatement with a declaration in the first statement position in eval code) 6 esid: sec-functiondeclarations-in-ifstatement-statement-clauses 7 flags: [generated, noStrict] 8 info: | 9 The following rules for IfStatement augment those in 13.6: 10 11 IfStatement[Yield, Return]: 12 if ( Expression[In, ?Yield] ) FunctionDeclaration[?Yield] else Statement[?Yield, ?Return] 13 if ( Expression[In, ?Yield] ) Statement[?Yield, ?Return] else FunctionDeclaration[?Yield] 14 if ( Expression[In, ?Yield] ) FunctionDeclaration[?Yield] else FunctionDeclaration[?Yield] 15 if ( Expression[In, ?Yield] ) FunctionDeclaration[?Yield] 16 17 18 B.3.3.3 Changes to EvalDeclarationInstantiation 19 20 [...] 21 a. If declaredFunctionOrVarNames does not contain F, then 22 i. If varEnvRec is a global Environment Record, then 23 [...] 24 ii. Else, 25 i. Let bindingExists be varEnvRec.HasBinding(F). 26 ii. If bindingExists is false, then 27 i. Perform ! varEnvRec.CreateMutableBinding(F, true). 28 ii. Perform ! varEnvRec.InitializeBinding(F, undefined). 29 [...] 30 ---*/ 31 var init, changed; 32 33 (function() { 34 eval( 35 'init = f;\ 36 f = 123;\ 37 changed = f;if (true) function f() { } else ;' 38 ); 39 }()); 40 41 assert.sameValue(init, undefined, 'binding is initialized to `undefined`'); 42 assert.sameValue(changed, 123, 'binding is mutable'); 43 assert.throws(ReferenceError, function() { 44 f; 45 }, 'global binding is not created'); 46 47 reportCompare(0, 0);