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#4059 — 14.4 Generator Function Definitions: Remove [Yield] parameter from GeneratorBody

• bug_id: 4059
• creation_ts: 2015-02-21 08:34:00 -0800
• short_desc: 14.4 Generator Function Definitions: Remove [Yield] parameter from GeneratorBody
• delta_ts: 2015-03-04 18:58:12 -0800
• product: Draft for 6th Edition
• component: technical issue
• version: Rev 34: February 20, 2015 Release Candidate 1
• rep_platform: All
• op_sys: All
• bug_status: RESOLVED
• resolution: FIXED
• priority: Normal
• bug_severity: normal
• everconfirmed: true
• reporter: André Bargull
• assigned_to: Allen Wirfs-Brock

---

• commentid: 13233
• comment_count: 0
• who: André Bargull
• bug_when: 2015-02-21 08:34:41 -0800

14.4 Generator Function Definitions

[Yield] is always present for generators, so the grammar can be simplified to:

GeneratorMethod[Yield] :
* PropertyName[?Yield] (StrictFormalParameters[Yield,GeneratorParameter] ) { GeneratorBody }

GeneratorDeclaration[Yield, Default] :
function * BindingIdentifier[?Yield] ( FormalParameters[Yield,GeneratorParameter] ) { GeneratorBody }
[+Default] function * ( FormalParameters[Yield,GeneratorParameter] ) { GeneratorBody }

GeneratorExpression :
function * BindingIdentifier[Yield]opt ( FormalParameters[Yield,GeneratorParameter] ) { GeneratorBody }

GeneratorBody :
FunctionBody[Yield]


So basically changing `GeneratorBody[Yield]` to just `GeneratorBody` and `FunctionBody[?Yield]` to `FunctionBody`.


And change 19.2.1.1.1 RuntimeSemantics: CreateDynamicFunction(constructor, newTarget, kind, args) step 3.a to:
> Let goal be the grammar symbol GeneratorBody.

---

• commentid: 13368
• comment_count: 1
• who: Allen Wirfs-Brock
• bug_when: 2015-02-25 16:55:47 -0800

fixed in rev35 editor's draft

---

• commentid: 13472
• comment_count: 2
• who: Allen Wirfs-Brock
• bug_when: 2015-03-04 18:58:12 -0800

fixed in rev35