On Monday, June 8, 2015 at 6:19:26 AM UTC+9, David Nolen wrote:
> Google Closure needs to know about constructors. This is why we have JSDoc 
> support.
> 
> On Sunday, June 7, 2015, Alice Bellard <[email protected]> wrote:
> On Sunday, June 7, 2015 at 10:58:38 PM UTC+9, David Nolen wrote:
> 
> > Still not quite enough information what is the code generated prior to 
> > advanced compilation?
> 
> >
> 
> >
> 
> > I suspect you need to supply the "@constructor" JSDoc.
> 
> >
> 
> >
> 
> > David
> 
> >
> 
> > On Sunday, June 7, 2015, Alice Bellard <[email protected]> wrote:
> 
> > On Saturday, June 6, 2015 at 11:24:58 PM UTC+9, David Nolen wrote:
> 
> >
> 
> > > It seems to me this problem can could be made more minimal than it is. As 
> > > it is, it seems like Google Closure itself might be rewriting the code. I 
> > > don't see any other way for a gensym to end up used over "this".
> 
> >
> 
> > >
> 
> >
> 
> > >
> 
> >
> 
> > > Need more information via a more minimal case.
> 
> >
> 
> > >
> 
> >
> 
> > >
> 
> >
> 
> > >
> 
> >
> 
> > > David
> 
> >
> 
> > >
> 
> >
> 
> > >
> 
> >
> 
> > > On Sat, Jun 6, 2015 at 5:56 AM, Dusan Miloradovic <[email protected]> 
> > > wrote:
> 
> >
> 
> > > Sorry, I thought it was the well known issue. Here is the simplified 
> > > macro:
> 
> >
> 
> > >
> 
> >
> 
> > >
> 
> >
> 
> > >
> 
> >
> 
> > > (defmacro custom-this []
> 
> >
> 
> > >
> 
> >
> 
> > >   (list 'js* "this")
> 
> >
> 
> > >
> 
> >
> 
> > > )
> 
> >
> 
> > >
> 
> >
> 
> > >
> 
> >
> 
> > >
> 
> >
> 
> > > (defmacro test-comp
> 
> >
> 
> > >
> 
> >
> 
> > >   [tsym tfields bsym & impls]
> 
> >
> 
> > >
> 
> >
> 
> > >   `(defn ~tsym [~@tfields]
> 
> >
> 
> > >
> 
> >
> 
> > >      ~@(map (fn[c]
> 
> >
> 
> > >
> 
> >
> 
> > >               `(this-as this#
> 
> >
> 
> > >
> 
> >
> 
> > >                         (aset this# ~(str c) ~c))) tfields)
> 
> >
> 
> > >
> 
> >
> 
> > >      ~(if (symbol? (first impls))
> 
> >
> 
> > >
> 
> >
> 
> > >         `(goog/base (custom-this))
> 
> >
> 
> > >
> 
> >
> 
> > >         (let [[constr-name params & bd] (first impls)
> 
> >
> 
> > >
> 
> >
> 
> > >               mta (meta constr-name)
> 
> >
> 
> > >
> 
> >
> 
> > >               ovrrd (when mta (= 'override (:tag mta)))
> 
> >
> 
> > >
> 
> >
> 
> > >               thsym (gensym "this")
> 
> >
> 
> > >
> 
> >
> 
> > >               ]
> 
> >
> 
> > >
> 
> >
> 
> > >           `(this-as ~thsym
> 
> >
> 
> > >
> 
> >
> 
> > >                     ~(when-not ovrrd
> 
> >
> 
> > >
> 
> >
> 
> > >                                         ;`(goog/base ~thsym ~@params)
> 
> >
> 
> > >
> 
> >
> 
> > >                        `(goog/base (custom-this) ~@params)
> 
> >
> 
> > >
> 
> >
> 
> > >                        )
> 
> >
> 
> > >
> 
> >
> 
> > >                     ~@bd)))
> 
> >
> 
> > >
> 
> >
> 
> > >  (this-as this## this##)
> 
> >
> 
> > >
> 
> >
> 
> > >      )
> 
> >
> 
> > >
> 
> >
> 
> > >   )
> 
> >
> 
> > >
> 
> >
> 
> > >
> 
> >
> 
> > >
> 
> >
> 
> > > and the test case in the cljs file:
> 
> >
> 
> > >
> 
> >
> 
> > >
> 
> >
> 
> > >
> 
> >
> 
> > > (mm/test-comp TestComponent [name] goog.ui.Component)
> 
> >
> 
> > >
> 
> >
> 
> > >
> 
> >
> 
> > >
> 
> >
> 
> > > generates the following js code:
> 
> >
> 
> > >
> 
> >
> 
> > >
> 
> >
> 
> > >
> 
> >
> 
> > > testns.TestComponent = (function testns$TestComponent(name){
> 
> >
> 
> > >
> 
> >
> 
> > > var this__18400__auto___26494 = this;
> 
> >
> 
> > >
> 
> >
> 
> > > (this__18400__auto___26494["name"] = name);
> 
> >
> 
> > >
> 
> >
> 
> > >
> 
> >
> 
> > >
> 
> >
> 
> > > var this26491_26495 = this;
> 
> >
> 
> > >
> 
> >
> 
> > > var G__26493_26496 = this;
> 
> >
> 
> > >
> 
> >
> 
> > > goog.base(G__26493_26496);
> 
> >
> 
> > >
> 
> >
> 
> > >
> 
> >
> 
> > >
> 
> >
> 
> > > var this_SHARP___18401__auto__ = this;
> 
> >
> 
> > >
> 
> >
> 
> > > return this_SHARP___18401__auto__;
> 
> >
> 
> > >
> 
> >
> 
> > > });
> 
> >
> 
> > >
> 
> >
> 
> > >
> 
> >
> 
> > >
> 
> >
> 
> > > and that fails during the advanced compilation phase with:
> 
> >
> 
> > >
> 
> >
> 
> > > ERROR: JSC_BASE_CLASS_ERROR. incorrect use of goog.base: First argument 
> > > must be 'this'.
> 
> >
> 
> > >
> 
> >
> 
> > >
> 
> >
> 
> > >
> 
> >
> 
> > > Thanks,
> 
> >
> 
> > >
> 
> >
> 
> > > Dusan
> 
> >
> 
> > >
> 
> >
> 
> > >
> 
> >
> 
> > >
> 
> >
> 
> > >
> 
> >
> 
> > >
> 
> >
> 
> > > --
> 
> >
> 
> > >
> 
> >
> 
> > > Note that posts from new members are moderated - please be patient with 
> > > your first post.
> 
> >
> 
> > >
> 
> >
> 
> > > ---
> 
> >
> 
> > >
> 
> >
> 
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> > > "ClojureScript" group.
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> >
> 
> > >
> 
> >
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> > > email to [email protected].
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> >
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> > >
> 
> >
> 
> > > To post to this group, send email to [email protected].
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> >
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> > >
> 
> >
> 
> > > Visit this group at http://groups.google.com/group/clojurescript.
> 
> >
> 
> >
> 
> >
> 
> > I'm also seeing the same error.
> 
> >
> 
> >
> 
> >
> 
> > (defn Foo
> 
> >
> 
> >   []
> 
> >
> 
> >   (goog/base (js* "this")))
> 
> >
> 
> > (goog/inherits Foo js/Object)
> 
> >
> 
> >
> 
> >
> 
> > (defn Foo
> 
> >
> 
> >   []
> 
> >
> 
> >   (this-as this
> 
> >
> 
> >     (goog/base this)))
> 
> >
> 
> > (goog/inherits Foo js/Object)
> 
> >
> 
> >
> 
> >
> 
> > Neither does work under advanced compilation mode.
> 
> >
> 
> >
> 
> >
> 
> >
> 
> >
> 
> > Compiling ClojureScript.
> 
> >
> 
> > Compiling "resources/public/js/compiled/main.js" from ["src-cljs"]...
> 
> >
> 
> > 6?? 07, 2015 10:24:58 ???? com.google.javascript.jscomp.LoggerErrorManager 
> > println
> 
> >
> 
> > SEVERE: /C:/workspace/app/target/cljsbuild-compiler-0/my/core.js:7: ERROR - 
> > incorrect use of goog.base: First argument must be 'this'.
> 
> >
> 
> > return goog.base(G__9818);
> 
> >
> 
> >        ^
> 
> >
> 
> >
> 
> >
> 
> > 6?? 07, 2015 10:24:58 ???? com.google.javascript.jscomp.LoggerErrorManager 
> > printSummary
> 
> >
> 
> > WARNING: 1 error(s), 0 warning(s)
> 
> >
> 
> > ERROR: JSC_BASE_CLASS_ERROR. incorrect use of goog.base: First argument 
> > must be 'this'. at /C:/workspace/app/target/cljsbuild-compiler-0/my/core.js 
> > line 7 : 7
> 
> >
> 
> >  [32mSuccessfully compiled "resources/public/js/compiled/main.js" in 13.313 
> > seconds. [0m
> 
> >
> 
> >
> 
> >
> 
> > --
> 
> >
> 
> > Note that posts from new members are moderated - please be patient with 
> > your first post.
> 
> >
> 
> > ---
> 
> >
> 
> > You received this message because you are subscribed to the Google Groups 
> > "ClojureScript" group.
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> > To post to this group, send email to [email protected].
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> > Visit this group at http://groups.google.com/group/clojurescript.
> 
> 
> 
> With :optimizations :none, the code compiles to
> 
> 
> 
> // Compiled by ClojureScript 0.0-3308 {}
> 
> goog.provide('my.core');
> 
> goog.require('cljs.core');
> 
> my.core.Foo = (function my$core$Foo(){
> 
> return goog.base(this);
> 
> });
> 
> goog.inherits(my.core.Foo,Object);
> 
> 
> 
> I'm not sure how "@constructor" JSDoc can help here. I'm not dealing with a 
> javascript source file, it's clojurescript code, and aren't JSDoc attributes 
> optional?
> 
> 
> 
> --
> 
> Note that posts from new members are moderated - please be patient with your 
> first post.
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> To post to this group, send email to [email protected].
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> Visit this group at http://groups.google.com/group/clojurescript.

Didn't know that JSDoc can be added to the clojure function like (defn ^{:jsdoc 
"@constructor"} Foo ...), but as I explained it, I still have to use js* for 
the whole statement to avoid the error.

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