jak-project/goal_src/goal-lib.gc

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;; OTHER STUFF
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

;; get list of all goal files
(asm-file "goal_src/build/all_files.gc")

;; tell compiler about stuff defined/implemented in the runtime.
(asm-file "goal_src/kernel-defs.gc")

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; BUILD SYSTEM
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

;; compile, color, and save a file
(defmacro m (file)
  `(asm-file ,file :color :write)
  )

;; compile, color, load and save a file
(defmacro ml (file)
  `(asm-file ,file :color :load :write)
  )

(desfun make-build-command (file)
  `(asm-file ,file :color :write)
  )

(defmacro build-game ()
  `(begin
     ,@(apply make-build-command all-goal-files)
     (build-dgos "goal_src/build/dgos.txt")
     )
  )

(defmacro blg ()
  `(begin
     (build-game)
     (dgo-load "kernel" global #xf #x200000)
     (dgo-load "game" global #xf #x200000)
     )
  )

(defmacro e ()
  `(:exit)
  )

(defmacro db ()
  `(begin
    (set-config! print-ir #t)
    (set-config! print-regalloc #t)
    )
  )

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; CONDITIONAL COMPILATION
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

(defmacro #when (clause &rest body)
  `(#cond (,clause ,@body))
  )

(defmacro #unless (clause &rest body)
  `(#cond ((not ,clause) ,@body))
  )


;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; TARGET CONTROL
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

(defmacro lt (&rest args)
  ;; shortcut for listen-to-target. also sends a :status command to make sure
  ;; all buffers on the target are flushed.
  `(begin
     (listen-to-target ,@args)
     (:status)
     )
  )

(defmacro r (&rest args)
  ;; shortcut to completely reset the target and connect, regardless of current state
  `(begin
     ;; connect, so we can send reset.  if we're already connected, does nothing
     (listen-to-target ,@args)
     ;; send a reset message, disconnecting us
     (reset-target)
     ;; establish connection again
     (listen-to-target ,@args)
     ;; flush buffers
     (:status)
     )
  )


;;;;;;;;;;;;;;;;;;;
;; GOAL Syntax
;;;;;;;;;;;;;;;;;;;
;; Bind vars in body
(defmacro let (bindings &rest body)
  `((lambda :inline-only #t ,(apply first bindings) ,@body)
    ,@(apply second bindings)))

;; Let, but recursive, allowing you to define variables in terms of others.
(defmacro let* (bindings &rest body)
  (if (null? bindings)
    `(begin ,@body)
    `((lambda :inline-only #t (,(caar bindings))
        (let* ,(cdr bindings) ,@body))
      ,(car (cdar bindings))
      )
    )
  )

;; Define a new function
(defmacro defun (name bindings &rest body)
  (if (and
        (> (length body) 1)      ;; more than one thing in function
        (string? (first body))   ;; first thing is a string
        )
    ;; then it's a docstring and we ignore it.
    `(define ,name (lambda :name ,name ,bindings ,@(cdr body)))
    ;; otherwise don't ignore it.
    `(define ,name (lambda :name ,name ,bindings ,@body))
    )
  )

(defmacro while (test &rest body)
  (with-gensyms (reloop test-exit)
    `(begin
       (goto ,test-exit)
       (label ,reloop)
       ,@body
       (label ,test-exit)
       (when-goto ,test ,reloop)
       #f
       )
    )
  )

;; Backup some values, and restore after executing body.
;; Non-dynamic (nonlocal jumps out of body will skip restore)
(defmacro protect (defs &rest body)
  (if (null? defs)
    ;; nothing to backup, just insert body (base case)
    `(begin ,@body)

    ;; a unique name for the thing we are backing up
    (with-gensyms (backup)
                  ;; store the original value of the first def in backup
                  `(let ((,backup ,(first defs)))
                     ;; backup any other things which need backing up
                     (protect ,(cdr defs)
                              ;; execute the body
                              ,@body
                              )
                     ;; restore the first thing
                     (set! ,(first defs) ,backup)
                     )
                  )
    )
  )

(defmacro +! (place amount)
  `(set! ,place (+ ,place ,amount))
  )

;; todo, handle too many arguments correct
(defmacro if (condition true-case &rest others)
  (if (null? others)
    `(cond (,condition ,true-case))
    `(cond (,condition ,true-case)
           (else ,(first others))
           )
    )
  )