Prims - Implement -, *, +, /

[clnl] / src / main / transpile.lisp

diff --git a/src/main/transpile.lisp b/src/main/transpile.lisp
index a9cf77b128d2465ee20baf862f6b358a518aa2c2..d3f96124c0a3745d39183616acb17556ee644140 100644 (file)
--- a/src/main/transpile.lisp
+++ b/src/main/transpile.lisp
@@ -1,13 +1,4 @@
-(in-package #:cl-nl.transpiler)
-
-; This is responsible for taking an ast and turning it into valid CL code
-; targeting the nvm.  Here is where start to care about commands versus reporters
-; and ensuring that things are in the right place.  The reason we wait until here
-; is because we want to allow someone else to play with the AST before handing it off
-; to us.  For instance, the command center wants to add "show" to reporters, and
-; the users dictate based on entry point whether they are expecting a command
-; or a reporter.  So monitors can say "hey, transpile this reporter" and we'll check
-; to make sure it actually is.
+(in-package #:clnl-transpiler)
 
 (defparameter *prims* nil)
 
@@ -20,8 +11,23 @@
 (defun find-prim (symb) (find symb *prims* :key #'prim-name))
 
 ; Let this grow, slowly but surely, eventually taking on calling context, etc.
-; For now, it's just a 
+; For now, it's just a
 (defun transpile-commands (parsed-ast)
+ "TRANSPILE-COMMANDS PARSED-AST => AST
+
+ARGUMENTS AND VALUES:
+
+  PARSED-AST: An ast as returned by the parser
+  AST: An common lisp AST that can be actually run in a common lisp instance
+
+DESCRIPTION:
+
+  TRANSPILE-COMMANDS takes a unambigious PARSED-AST and converts it to
+  Common Lisp code.
+
+  Calling eval on that code should work correctly as long as you have a
+  running engine.  This is the entry point for commands, so it does
+  extra checking to ensure that commands are actually in the PARSED-AST."
  `(progn
    ,@(mapcar #'transpile-command parsed-ast)))
 
@@ -30,9 +36,26 @@
   ((not (listp command)) (error "Expected a statement of some sort"))
   ((not (find-prim (car command))) (error "Couldn't find the command for ~S" (car command)))
   ((not (is-command (find-prim (car command)))) (error "Expected command, got ~S" (car command)))
-  (t `(,(prim-func (find-prim (car command))) ,@(mapcar #'transpile-reporter (cdr command))))))
+  (t (apply (prim-func (find-prim (car command))) (mapcar #'transpile-reporter (cdr command))))))
 
 (defun transpile-reporter (reporter)
+ "TRANSPILE-REPORTER REPORTER => AST
+
+ARGUMENTS AND VALUES:
+
+  REPORTER: An ast returned from the parser.
+  AST: An common lisp AST that can be actually run in a common lisp instance
+
+DESCRIPTION:
+
+  TRANSPILE-REPORTER takes a unambigious PARSED-AST and converts it to
+  Common Lisp code.
+
+  Calling eval on that code should work correctly as long as you have a
+  running engine.  This is the entry point for reporters, so it does
+  extra checking to ensure that the reporter is actually in the REPORTER.
+
+  The Common lisp code that is returned, when run, will return some value."
  (cond
   ((numberp reporter) reporter) ; The parser converts to double for us
   ((symbolp reporter) reporter) ; The parser should have checked that having a symbol here is ok
@@ -40,19 +63,28 @@
   ((eql :command-block (car reporter)) (transpile-command-block reporter))
   ((not (find-prim (car reporter))) (error "Couldn't find the reporter for ~S" (car reporter)))
   ((not (is-reporter (find-prim (car reporter)))) (error "Expected reporter, got ~S" (car reporter)))
-  (t `(,(prim-func (find-prim (car reporter))) ,@(mapcar #'transpile-reporter (cdr reporter))))))
+  (t (apply (prim-func (find-prim (car reporter))) (mapcar #'transpile-reporter (cdr reporter))))))
 
 (defun transpile-command-block (block)
  `(lambda () ,@(mapcar #'transpile-command (cdr block))))
 
-(defmacro defprim (name type nvm-func)
- `(push
-   (list :name ,name :type ,type :func ',nvm-func)
-   *prims*))
+(defmacro defprim (name type func)
+ `(push (list :name ,name :type ,type :func ,func) *prims*))
+
+(defmacro defsimpleprim (name type simple-func)
+ `(defprim ,name ,type (lambda (&rest args) `(,',simple-func ,@args))))
 
 ; We count on the parser to handle arguemnts for us, when collating things.
-(defprim :ask :command cl-nl.nvm::ask)
-(defprim :crt :command cl-nl.nvm::create-turtles)
-(defprim :fd :command cl-nl.nvm::fd)
-(defprim :show :command cl-nl.nvm::show)
-(defprim :turtles :reporter cl-nl.nvm::turtles)
+
+(defsimpleprim := :reporter cl:equalp)
+(defprim :!= :reporter (lambda (a b) `(not (equalp ,a ,b))))
+(defsimpleprim :- :reporter cl:-)
+(defsimpleprim :+ :reporter cl:+)
+(defsimpleprim :* :reporter cl:*)
+(defsimpleprim :/ :reporter cl:/)
+(defsimpleprim :ask :command clnl-nvm:ask)
+(defsimpleprim :crt :command clnl-nvm:create-turtles)
+(defsimpleprim :fd :command clnl-nvm:forward)
+(defsimpleprim :random-float :reporter clnl-nvm:random-float)
+(defsimpleprim :show :command clnl-nvm:show)
+(defsimpleprim :turtles :reporter clnl-nvm:turtles)