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<div class=Section1>

<p class=MsoPlainText>tfpt review /shelveset:Super17;REDMOND\tomat<o:p></o:p></p>

<p class=MsoPlainText><o:p>&nbsp;</o:p></p>

<p class=MsoNormal><b>DLR changes</b>: <o:p></o:p></p>

<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l1 level1 lfo1'><![if !supportLists]><span
style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]>Removes InvokeMethodAttributes.<o:p></o:p></p>

<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l1 level1 lfo1'><![if !supportLists]><span
style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]>Makes ActionExpression factory public&nbsp; &#8211;
it&#8217;s needed by a custom Ruby action (ProtocolConverterAction).<o:p></o:p></p>

<p class=MsoNormal><o:p>&nbsp;</o:p></p>

<p class=MsoNormal><b>Ruby changes</b>:<o:p></o:p></p>

<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l1 level1 lfo1'><![if !supportLists]><span
style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]>Adds InvokeSuperMemberAction custom action<o:p></o:p></p>

<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l1 level1 lfo1'><![if !supportLists]><span
style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]>Refactors handling of member invocation in RubyBinder.<o:p></o:p></p>

<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l1 level1 lfo1'><![if !supportLists]><span
style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]>Improves implementation of super call. This is how
&#8216;super&#8217; seems to work:<o:p></o:p></p>

<p class=MsoListParagraph><o:p>&nbsp;</o:p></p>

<p class=MsoListParagraphCxSpMiddle style='margin-left:.75in;text-indent:-.25in;
mso-list:l0 level1 lfo2'><![if !supportLists]><span style='mso-list:Ignore'>1.<span
style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span><![endif]>&nbsp;Let
<b>s</b> be the inner-most scope in the lexical scope hierarchy of the
&#8216;super&#8217; call site that is either <o:p></o:p></p>

<p class=MsoListParagraphCxSpMiddle style='margin-left:1.25in;text-indent:-.25in;
mso-list:l0 level2 lfo2'><![if !supportLists]><span style='mso-list:Ignore'>a.<span
style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span><![endif]>a
method scope, or<o:p></o:p></p>

<p class=MsoListParagraphCxSpMiddle style='margin-left:1.25in;text-indent:-.25in;
mso-list:l0 level2 lfo2'><![if !supportLists]><span style='mso-list:Ignore'>b.<span
style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span><![endif]>a
block definition scope of a block whose caller is a method created by
&#8216;define_method&#8217;<o:p></o:p></p>

<p class=MsoListParagraphCxSpMiddle style='margin-left:.75in;text-indent:-.25in;
mso-list:l0 level1 lfo2'><![if !supportLists]><span style='mso-list:Ignore'>2.<span
style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span><![endif]>If
<b>s</b> is a method definition scope (1a) then this method&#8217;s frame <b>f</b>
is available: either it is <o:p></o:p></p>

<p class=MsoListParagraphCxSpMiddle style='margin-left:1.25in;text-indent:-.25in;
mso-list:l0 level2 lfo2'><![if !supportLists]><span style='mso-list:Ignore'>a.<span
style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span><![endif]>the
frame that invokes the &#8216;super&#8217; call, or<o:p></o:p></p>

<p class=MsoListParagraphCxSpMiddle style='margin-left:1.25in;text-indent:-.25in;
mso-list:l0 level2 lfo2'><![if !supportLists]><span style='mso-list:Ignore'>b.<span
style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span><![endif]>captured
by a closure of the block that contains the &#8216;super&#8217; call<o:p></o:p></p>

<p class=MsoListParagraphCxSpLast style='margin-left:.75in;text-indent:-.25in;
mso-list:l0 level1 lfo2'><![if !supportLists]><span style='mso-list:Ignore'>3.<span
style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span><![endif]>If
<b>s</b> is a block (1b) then its caller&#8217;s frame <b>f</b> is available.<o:p></o:p></p>

<p class=MsoNormal><o:p>&nbsp;</o:p></p>

<p class=MsoNormal>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Use
the arguments, self object and method name of the frame <b>f </b>for the
&#8216;super&#8217; invocation.<o:p></o:p></p>

<p class=MsoNormal style='text-indent:.5in'><o:p>&nbsp;</o:p></p>

<p class=MsoNormal style='margin-left:.5in'>Implementation: the method defined
by define_method passes its frame into the block it calls (in BlockParam
object). Super call site traverses lexical hierarchy and finds scope <b>s</b>
and frame <b>f</b>. All information necessary to perform the super call are on <b>f</b>.
For super to work within eval some additional work needs to be done beyond this
shelveset &#8211; arguments needs to be distinguishable from other local
variables at run-time. Super in eval will then do dynamic local variable lookup
on the argument names that it finds in the frame <b>f</b>. This change
doesn&#8217;t implement any optimizations though they are possible in some
cases.<o:p></o:p></p>

<p class=MsoListParagraph><o:p>&nbsp;</o:p></p>

<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l1 level1 lfo1'><![if !supportLists]><span
style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]>Adds ProtocolConverterAction custom action.<o:p></o:p></p>

<p class=MsoListParagraph style='margin-left:1.0in;text-indent:-.25in;
mso-list:l1 level2 lfo1'><![if !supportLists]><span style='font-family:"Courier New"'><span
style='mso-list:Ignore'>o<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;
</span></span></span><![endif]>It&#8217;s an abstract class for specific
protocol conversions (to_proc, to_s, &#8230;)<o:p></o:p></p>

<p class=MsoListParagraph style='margin-left:1.0in;text-indent:-.25in;
mso-list:l1 level2 lfo1'><![if !supportLists]><span style='font-family:"Courier New"'><span
style='mso-list:Ignore'>o<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;
</span></span></span><![endif]>This shelveset adds only ConvertToProcAction
&lt;: ProtocolConverterAction so far, we can replace Protocols by these actions
in future.<o:p></o:p></p>

<p class=MsoListParagraph style='margin-left:1.0in;text-indent:-.25in;
mso-list:l1 level2 lfo1'><![if !supportLists]><span style='font-family:"Courier New"'><span
style='mso-list:Ignore'>o<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;
</span></span></span><![endif]>The protocol used for conversions is:<o:p></o:p></p>

<p class=MsoListParagraph style='margin-left:1.5in;text-indent:-.25in;
mso-list:l1 level3 lfo1'><![if !supportLists]><span style='font-family:Symbol'><span
style='mso-list:Ignore'>&middot;<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span></span><![endif]>if obj.respond_to? :to_xxx <br>
&nbsp;&nbsp; result = obj.to_xxx <br>
&nbsp;&nbsp; if result.subclass_of Xxx then return result<br>
end<br>
errror<o:p></o:p></p>

<p class=MsoListParagraph style='margin-left:1.0in;text-indent:-.25in;
mso-list:l1 level2 lfo1'><![if !supportLists]><span style='font-family:"Courier New"'><span
style='mso-list:Ignore'>o<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;
</span></span></span><![endif]>The action implements an optimization that
avoids 2 dynamic dispatches in case respond_to? is not overridden:<o:p></o:p></p>

<p class=MsoListParagraph style='margin-left:1.5in;text-indent:-.25in;
mso-list:l1 level3 lfo1'><![if !supportLists]><span style='font-family:Symbol'><span
style='mso-list:Ignore'>&middot;<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span></span><![endif]>check class version of object obj in rule test<o:p></o:p></p>

<p class=MsoListParagraph style='margin-left:1.5in;text-indent:-.25in;
mso-list:l1 level3 lfo1'><![if !supportLists]><span style='font-family:Symbol'><span
style='mso-list:Ignore'>&middot;<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span></span><![endif]>obj.class overrides respond_to? =&gt; no
optimization (emit 2 dynamic dispatches to respond_to? and to_xxx)<o:p></o:p></p>

<p class=MsoListParagraph style='margin-left:1.5in;text-indent:-.25in;
mso-list:l1 level3 lfo1'><![if !supportLists]><span style='font-family:Symbol'><span
style='mso-list:Ignore'>&middot;<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span></span><![endif]>otherwise: lookup to_xxx, not found =&gt; emit
error, found =&gt; emit static call to to_xxx<o:p></o:p></p>

<p class=MsoListParagraph style='margin-left:1.5in;text-indent:-.25in;
mso-list:l1 level3 lfo1'><![if !supportLists]><span style='font-family:Symbol'><span
style='mso-list:Ignore'>&middot;<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span></span><![endif]>check result of to_xxx<o:p></o:p></p>

<p class=MsoListParagraph><o:p>&nbsp;</o:p></p>

<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l1 level1 lfo1'><![if !supportLists]><span
style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]>Implements to_proc conversion for &amp; operator using ConvertToProcAction
(fixes bug <span style='color:#202020'>#19714: &amp; operator should call
to_proc)</span><o:p></o:p></p>

<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l1 level1 lfo1'><![if !supportLists]><span
style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]>Adds #method-definition closure local variable of type
RubyMethodInfo: <o:p></o:p></p>

<p class=MsoListParagraph style='margin-left:1.0in;text-indent:-.25in;
mso-list:l1 level2 lfo1'><![if !supportLists]><span style='font-family:"Courier New"'><span
style='mso-list:Ignore'>o<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;
</span></span></span><![endif]>Each method definition stores itself into this
variable, which is used inside the method definition. This effectively enables
any library/ops code to access the current method definition.<o:p></o:p></p>

<p class=MsoListParagraph style='margin-left:1.0in;text-indent:-.25in;
mso-list:l1 level2 lfo1'><![if !supportLists]><span style='font-family:"Courier New"'><span
style='mso-list:Ignore'>o<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;
</span></span></span><![endif]>RubyMethodInfo now holds on the method&#8217;s
declaring local scope.<o:p></o:p></p>

<p class=MsoListParagraph style='margin-left:1.0in;text-indent:-.25in;
mso-list:l1 level2 lfo1'><![if !supportLists]><span style='font-family:"Courier New"'><span
style='mso-list:Ignore'>o<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;
</span></span></span><![endif]>Adds DefinitionName to RubyMethodInfo &#8211;
this is the name of the method definition. The method itself could be used
under different names (if aliased). Some language operations care only about
definition name (like super call).<o:p></o:p></p>

<p class=MsoListParagraph style='margin-left:1.0in'><o:p>&nbsp;</o:p></p>

<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l1 level1 lfo1'><![if !supportLists]><span
style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]>Adds UndefineMethod attribute &#8211; it is used on
library classes to undefined methods defined in base classes.<o:p></o:p></p>

<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l1 level1 lfo1'><![if !supportLists]><span
style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]>Fixes GetInstanceMethods to skip undefined method.<o:p></o:p></p>

<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l1 level1 lfo1'><![if !supportLists]><span
style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]>Implements Kernel#block_given?, Module#module_function
methods. Fixes Kernel#private/public/protected methods.<o:p></o:p></p>

<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l1 level1 lfo1'><![if !supportLists]><span
style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]>Replaces VariableExpression and ParameterExpression by
Expression where possible.<o:p></o:p></p>

<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l1 level1 lfo1'><![if !supportLists]><span
style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]>Simplifies code emitted per method definition. <o:p></o:p></p>

<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l1 level1 lfo1'><![if !supportLists]><span
style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]>Fixes bug <span style='color:#202020'>#19907:
class_eval not singleton.</span><o:p></o:p></p>

<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l1 level1 lfo1'><![if !supportLists]><span
style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]><span style='color:#202020'>Fixes bug #19672: Logical
operator in method arguments won't parse.</span><o:p></o:p></p>

<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l1 level1 lfo1'><![if !supportLists]><span
style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]><span style='color:#202020'>Fixes bug #19803: rescue
next syntax bug.</span><o:p></o:p></p>

<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l1 level1 lfo1'><![if !supportLists]><span
style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]><span style='color:#202020'>Fixes bug #19892: Proc
cannot be used as Boolean.</span><o:p></o:p></p>

<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l1 level1 lfo1'><![if !supportLists]><span
style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]><span style='color:#202020'>Fixes bug #19706: alias
method resolution bug.</span><o:p></o:p></p>

<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l1 level1 lfo1'><![if !supportLists]><span
style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span><![endif]>Adds more unit tests and refactors unit test driver a
little bit.<o:p></o:p></p>

<p class=MsoNormal><o:p>&nbsp;</o:p></p>

<p class=MsoNormal>Tomas<o:p></o:p></p>

<p class=MsoPlainText><o:p>&nbsp;</o:p></p>

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