func-block-decl-eval-func-block-scoping.js (1558B)
1 // This file was procedurally generated from the following sources: 2 // - src/annex-b-fns/eval-func-block-scoping.case 3 // - src/annex-b-fns/eval-func/direct-block.template 4 /*--- 5 description: A block-scoped binding is created (Block statement in eval code containing a function declaration) 6 esid: sec-web-compat-evaldeclarationinstantiation 7 flags: [generated, noStrict] 8 info: | 9 13.2.14 Runtime Semantics: BlockDeclarationInstantiation 10 11 [...] 12 4. For each element d in declarations do 13 a. For each element dn of the BoundNames of d do 14 i. If IsConstantDeclaration of d is true, then 15 [...] 16 ii. Else, 17 2. Perform ! envRec.CreateMutableBinding(dn, false). 18 19 b. If d is a GeneratorDeclaration production or a FunctionDeclaration 20 production, then 21 i. Let fn be the sole element of the BoundNames of d. 22 ii. Let fo be the result of performing InstantiateFunctionObject for 23 d with argument env. 24 iii. Perform envRec.InitializeBinding(fn, fo). 25 ---*/ 26 var initialBV, currentBV, varBinding; 27 28 (function() { 29 eval( 30 '{ function f() { initialBV = f; f = 123; currentBV = f; return "decl"; } }varBinding = f;\ 31 f();' 32 ); 33 }()); 34 35 36 assert.sameValue( 37 initialBV(), 38 'decl', 39 'Block-scoped binding value is function object at execution time' 40 ); 41 assert.sameValue(currentBV, 123, 'Block-scoped binding is mutable'); 42 assert.sameValue( 43 varBinding(), 44 'decl', 45 'Block-scoped binding is independent of outer var-scoped binding' 46 ); 47 48 reportCompare(0, 0);