df/dce/glossary_8html_source.html

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 <pre style="background:#AE6;width:25em;float:right;padding-right:2em">

          .ooo

           'OOOo

       ~ p ooOOOo 2 ~

           .OOO

            oO      %% a fast perl5

              Oo

             'O

              `

             (o)

         ___/ /

        /`    \

       /v^  `  ,

      (...v/v^/

       \../::/

        \/::/

 </pre>

 <div id='central'>

 <p>See the <a href="start.html">pamphlet</a> for an overview of the potion syntax and data structures.</p>

 <dl>

     <dt><a name="tuple">tuple</a></dt>

     <dd>an ordered list</dd>

 </dl>

 <dl>

     <dt><a name="table">table</a></dt>

     <dd>a hash<br />

   but with list syntax</dd>

 </dl>

 <dl>

     <dt><a name="lick">lick</a></dt>

     <dd>a nested data structure, i.e. named hash. the keys are called <code>path</code>.</dd>

 </dl>

 <p>Every lick can have a name, a table of attributes, and a list of<br />

 children. The list of children can, instead, be a Potion data<br />

 type, such as a number or string or something.</p>

 <dl>

     <dt><a name="path">path</a></dt>

     <dd>key of a <code>lick</code>, an instance variable of an object.</dd>

 </dl>

 <p>Paths cannot be randomly added to the object after the object<br />

 is created. Each object has a strict set of paths. Every path<br />

 which is used in the constructor is added to the object upon<br />

 creation.</p>

 <dl>

     <dt><a name="upvalue">upvalue</a></dt>

     <dd>A variable in an upper scope.</dd>

 </dl>

 <p>Since a closure doesn&#8217;t have access to the registers<br />

 of another function, these variables are passed<br />

 as pointers (the <code>PNWeakRef</code> struct.)</p>

 <dl>

     <dt><a name="lobby">Lobby</a></dt>

     <dd>potion named the main interp object <code>Lobby</code>, which holds the<br />

 methods <code>about</code>, <code>here</code>, <code>exit</code>, <code>self</code>, &#8230;<br />

 p2 renames it to <code>"P2"</code></dd>

 </dl>

 <dl>

     <dt><a name="mop">mop</a></dt>

     <dd>potion/p2 uses the <a href="http://piumarta.com/software/cola/objmodel2.pdf">cola mop</a><br />

 with 5 core functions: <code>addMethod</code>, <code>lookup</code>, <code>allocate</code>, <code>delegated</code> and <code>intern</code>.<br />

 And 4 native (and jitted) VM ops: <code>SELF</code>, <code>CLASS</code>, <code>BIND</code> and <code>MSG</code>.<br />

 <img src="p2-mop.png" title="p2-mop" alt="p2-mop" /></dd>

 </dl>

 <dl>

     <dt><a name="flex">flex</a></dt>

     <dd>the mixin type. A mixin is created with <code>potion_type_new()</code> referencing a parent type, and are handled with <code>PN_FLEX</code> macros.</dd>

 </dl>

 </div></body></html>

main
int main(int argc, char *argv[])
Definition: potion.c:263

Lobby
root namespace, the global environment and parent class of all builtins.

PNWeakRef
a weak ref is used for upvals, it acts as a memory slot, non-volatile but mutable.
Definition: potion.h:488

potion_type_new
PN potion_type_new(Potion *P, PNType t, PN self)
create a non-user type, derived from self
Definition: objmodel.c:212

Potion_State
the global interpreter state P. currently singleton (not threads yet)
Definition: potion.h:653

PN_FLEX
PN_FLEX(PNFlex, PN)

name
const char * name
Definition: compile.c:30