<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>Ok, I'm Robert, for professional reasons and done. Charlie Robert is my nickname from long time back. So let me stick to this email address...<br></div><div><br>On Jan 28, 2014, at 1:54 PM, Eliot Miranda <<a href="mailto:eliot.miranda@gmail.com">eliot.miranda@gmail.com</a>> wrote:<br><br></div><blockquote type="cite"><div><div dir="ltr">Hi Charlie,<div class="gmail_extra"><br><br><div class="gmail_quote">On Fri, Jan 24, 2014 at 9:11 PM, charlie robert <span dir="ltr"><<a href="mailto:charlie.robert@icloud.com" target="_blank">charlie.robert@icloud.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div style="word-wrap:break-word">I was curious whether java may be used in Cog. I recall a fair project with the serialization and core pojo representation, but my memory Might java interoperate natively, so as to call a java function in smalltalk, as a smalltalk call with a closure/continuation, or perhaps in the other direction? </div>
</blockquote><div><br></div><div>I'm sure one can write a Smalltalk/Java interconnect. There are a number of ways to do it. What are your requirements? What do you mean by "native" operation? e.g. VisualAgeForJava?</div></div></div></div></div></blockquote><div><br></div>My requirements, hmm. <div><br></div><div>1 - I would like to have .class files able to load in your VM/ObjectMemory. </div><div>2 - I would like java byte codes "JITted" into Smalltalk byte codes. </div><div>3 - I would like if one side (squeak) could invoke the other side (java) without explicit wrappers, and vice versa. I mean this as native.</div><div>4 - I would like java serialization support. </div><div>5 - like JVM 8 has a byte code for reflective lookup, I would like Smalltalk bytecodes to have one bytecode for direct invocation, and bypass the reflective meta call</div><div>6 - I want to run scala on Cog/Spur</div><div>7 - then the "JIT"...I would like the program to start in dynamic mode then "JIT" with a call to the inferencer to determine type.</div><div><br></div><div>This way, we have a JVM with mutable refs (become) so it would be a JVM++.<br><div><br></div><div>The thing that gets me is that barely anything really interoperates.</div><div><br><blockquote type="cite"><div><div dir="ltr"><div class="gmail_extra"><div class="gmail_quote">
<div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div style="word-wrap:break-word"> COudl a scala type inferencer be built in Spur’s runtime? runtime?</div>
</blockquote><div><br></div><div>I'm not sure what you mean. Could you elaborate? Spur is an object representation and set of garbage collection/memory management facilities. As such wouldn't it live below any type inferencer?</div></div></div></div></div></blockquote><div><br></div>Ok it is the inner Cog axle I think of, not Spur. The lookup and invocation of a send, of a method. At its root handler it could call an inline scala type inferencer.</div><div><br></div><div><br><blockquote type="cite"><div><div dir="ltr"><div class="gmail_extra"><div class="gmail_quote">
<div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div style="word-wrap:break-word"><div>Eliot, I am quite intrigued on your blog post on Spur’s object stack representation. Does this format touch on the heap structure of an object?</div>
</div></blockquote><div><br></div><div>What exactly do you mean by "Spur’s object stack representation"? Do you mean Spur's object representation, or do you mean the ObjStack datatype? The latter is merely a segmented stack, like building OrderedCollection out of a linked list of pages, each page containing up to N elements.</div>
<div> </div></div></div></div></div></blockquote><div><br></div>So Spur specifies heap structure? Vis-a-Vis the lack of interoperability, Cap'n Proto would be just the thing to interoperate java and squeak and scala and groovy. You own the metal so you can do whatever you imagine.</div><div><br><blockquote type="cite"><div><div dir="ltr"><div class="gmail_extra"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div style="word-wrap:break-word"><div> Either way, using Cap’n Proto in the heap and Spur for the stack/queue structures would be really nice if someone had one. Does a lord or lady own such a magic item +4? on a raspberry?<br>
</div></div></blockquote><div><br></div><div><a href="https://plus.google.com/+KentonVarda/posts/GRJ4h4w2UN9">https://plus.google.com/+KentonVarda/posts/GRJ4h4w2UN9</a>? Or am I being cynical?</div></div></div></div></div></blockquote><div><br></div>I am missing all this, 'cuse me '</div><div><br></div><div>Indeed, best,</div><div>Robert</div><div><br><blockquote type="cite"><div><div dir="ltr"><div class="gmail_extra"><div class="gmail_quote"><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
<div style="word-wrap:break-word"><div></div><div><div>so sorry for all that noise ,<br></div><div><div>
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- charlie (Rob WIthers)</div></div></div></div></div></div></blockquote></div><div><br></div>-- <br>best,<div>Eliot</div>
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