From c1393acf912c903d8695ca1d6a511ed13b96e0e9 Mon Sep 17 00:00:00 2001
From: Justin Ethier <justin.ethier@gmail.com>
Date: Sat, 17 Sep 2016 03:08:57 -0400
Subject: [PATCH] Added functions to be migrated here

---
 scheme/cyclone/util.sld | 116 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 116 insertions(+)

diff --git a/scheme/cyclone/util.sld b/scheme/cyclone/util.sld
index 028b90b3..210b379f 100644
--- a/scheme/cyclone/util.sld
+++ b/scheme/cyclone/util.sld
@@ -23,6 +23,23 @@
     lambda-formals-type
     lambda-varargs-var
     pack-lambda-arguments
+;; TODO:
+;    if->condition 
+;    if->then 
+;    if-else? 
+;    if->else 
+;    const? 
+;    ref? 
+;    quote? 
+;    define-c?
+;    set!? 
+;    set!->var 
+;    set!->exp 
+;    define? 
+;    define->var 
+;    define->exp 
+;    app?
+
     ;; Environments
     env:enclosing-environment
     env:first-frame
@@ -82,6 +99,105 @@
 (define (lambda? exp)
   (tagged-list? 'lambda exp))
 
+
+
+
+;
+;
+;; if->condition : if-exp -> exp
+;(define (if->condition exp)
+;  (cadr exp))
+;
+;; if->then : if-exp -> exp
+;(define (if->then exp)
+;  (caddr exp))
+;
+;;; if-else? : if-exp -> bool
+;;; Determines whether an if expression has an else clause
+;(define (if-else? exp)
+;  (and (tagged-list? 'if exp)
+;       (> (length exp) 3)))
+;
+;; if->else : if-exp -> exp
+;(define (if->else exp)
+;  (cadddr exp))
+;
+;; app? : exp -> boolean
+;(define (app? exp)
+;  (pair? exp))
+;
+;; const? : exp -> boolean
+;(define (const? exp)
+;  (or (integer? exp)
+;      (real? exp)
+;      (string? exp)
+;      (vector? exp)
+;      (bytevector? exp)
+;      (char? exp)
+;      (boolean? exp)))
+;
+;; ref? : exp -> boolean
+;(define (ref? exp)
+;  (symbol? exp))
+;
+;; quote? : exp -> boolean
+;(define (quote? exp)
+;  (tagged-list? 'quote exp))
+;
+;; set! : exp -> boolean
+;(define (set!? exp)
+;  (tagged-list? 'set! exp))
+;
+;; set!->var : set!-exp -> var
+;(define (set!->var exp)
+;  (cadr exp))
+;
+;; set!->exp : set!-exp -> exp
+;(define (set!->exp exp)
+;  (caddr exp))
+;
+;; define : exp -> boolean
+;(define (define? exp)
+;  (tagged-list? 'define exp))
+;
+;(define (define-lambda? exp)
+;  (let ((var (cadr exp)))
+;    (or
+;      ;; Standard function
+;      (and (list? var) 
+;           (> (length var) 0)
+;           (symbol? (car var)))
+;      ;; Varargs function
+;      (and (pair? var)
+;           (symbol? (car var))))))
+;
+;(define (define->lambda exp)
+;  (cond
+;    ((define-lambda? exp)
+;     (let ((var (caadr exp))
+;           (args (cdadr exp))
+;           (body (cddr exp)))
+;       `(define ,var (lambda ,args ,@body))))
+;    (else exp)))
+;
+;; define->var : define-exp -> var
+;(define (define->var exp)
+;  (cond
+;    ((define-lambda? exp)
+;     (caadr exp))
+;    (else 
+;     (cadr exp))))
+;
+;; define->exp : define-exp -> exp
+;(define (define->exp exp)
+;  (cddr exp))
+;
+;(define (define-c? exp)
+;  (tagged-list? 'define-c exp))
+
+
+
+
 ;; Create a proper copy of an improper list
 ;; EG: (1 2 . 3) ==> (1 2 3)
 (define (pair->list p)