Re: [heycam/webidl] Replace serializers by toJSON and [Default] extended attribute (#323)

domenic commented on this pull request.



> +
+    To invoke the <dfn>collect attribute values</dfn> abstract operation
+    with [=stack=] |stack| and [=ordered map=] |map| as arguments,
+    run the the following steps:
+
+    1.  Let |I| be the result of invoking [=stack/pop=] from |stack|.
+    1.  [=list|For each=] [=implements statements=] where the left-hand side [=identifier=] references |I|:
+        1.  Let |rhs| be the [=interface=] represented by the right-hand side [=identifier=].
+        1.  Let |interfaces| be the result of [=create an inheritance stack|creating an inheritance stack=]
+            for [=interface=] |rhs|.
+        1.  invoke [=collect attribute values=], passing it |interfaces| and |map|.
+    1.  If a “toJSON” operation with a [{{Default}}] [=extended attribute=] is declared on |I|, then
+        [=list|for each=] [=exposed=] [=regular attribute=] |attr|
+        that is an [=interface member=] of |I|, in order:
+        1.  Let |id| be the [=identifier=] of |attr|.
+        1.  Let |value| be the underlying value of |attr|.

Algorithm seems good.

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