Implement while loop

neutgs/init.fnl

@@ -20,8 +20,13 @@
     (IMStartUp)
     (TextStartUp)
 
-;     (if (= 1 1) (printnum 1) (printnum 2))
+    (let (x 1 dx 2 lim (if (> dx 0) 10 -10) break [ssc.FALSE])
-;     (if (or (< 3 2) (not= 5 10)) (printnum 3) (printnum 4))
+      (while (and (< x lim) (not break))
+        (printnum x)
+        (set! x (+ x dx))
+        (if (= x 6) (set! break [ssc.TRUE]))))
+
+    (if (> (+ 1 2) (+ 3 4)) (printnum 0x1212) (printnum 0x3434))
     (if (and (or (= 1 2) (< 3 4)) ;
              (not (or (> 10 3) (<= 6 5))))
       (printnum 0xdead) (printnum 0xbeef))

ssc/init.fnl

@@ -32,9 +32,6 @@
 ; args are either strings (symbols) or numbers
 
 ; TODO:
-; * implement global definitions
-; * fix comparisons
-; * implement loops
 ; * implement "getters" (subroutine that runs when referenced by name without an explicit call)
 
 (import-macros {:sss ! : compile} :ssc.macros)
@@ -242,6 +239,10 @@
                cl-false (if ?iffalse [[:bra :-if-done-] :-if-false- c-false :-if-done-]
                                      [:-if-false-])]
            (values (lume.concat block cl-false) etype)))
+   :while (lambda [self test ...]
+            (let [block [:block :-loop-top- (self:gen-condition test :-enter-loop- :-exit-loop-) :-enter-loop-]
+                  c-body (self:expr-poly [:do ...])]
+              (values (lume.concat block [c-body [:bra :-loop-top-] :-exit-loop-]) :void)))
    :+ (lambda [self first ...]
         (self:accumulation-op
           (fn [etype {: lo : hi : const}]