feat: add assembler test file

host/assembler.fnl

@@ -1 +1,44 @@
-(local opcodes (require :host.assembler.opcodes))
+(local 
+	{: r
+	: move
+	: branch
+	: branch-link}
+	(require :host.assembler.opcodes))
+(local {: any : slice : push} (require :deps.lume))
+
+(fn label [name] {:label name})
+(fn label? [value]
+	(if (and (= (type value) :table) (. value :label)) true false))
+
+(fn insert-label [table label index]
+	(if (. table :label)
+			(:error (.. "Duplicate label " label))
+			(tset table :labels label index)))
+
+(fn assemble [forms offset]
+	(let [state {:labels {} :instructions [] :reverse-labels []}]
+		(each [_ form (ipairs forms)]
+			(if (= (type form) :string)
+					(insert-label state form (+ offset (* 4 (length (. state :instructions)))))
+					(push (. state :instructions)
+								(if (any (slice form 2) label?)
+										(do
+											(push (. state :reverse-labels) (+ 1 (length (. state :instructions))))
+											form)
+										((. form 1) (table.unpack (slice form 2)))))))
+		state))
+
+(fn link [{: labels : instructions : reverse-labels}]
+	())
+
+(macro x [...]
+	`[,(unpack (icollect [_ form (ipairs ...)] '[,(. form 1)]))])
+
+(macrodebug (x (move (r 9) (r 8))))
+
+(assemble
+	[[move (r 8) (r 2)]
+	 :label-1
+	 [move (r 9) (r 3)]
+	 [branch (label :label-1)]]
+	0x8000)

host/assembler/opcodes.fnl

@@ -1,9 +1,9 @@
 (local util (require :host.util))
 
-(macro construct-code [& forms]
-	`(bor
-		 ,(unpack 
-				(icollect [i n (ipairs forms)] `(lshift ,(. n 1) ,(. n 2))))))
+(macro construct-opcode [& forms]
+  `(bor ,(unpack 
+           (icollect [i n (ipairs forms)]
+                     `(lshift ,(. n 1) ,(. n 2))))))
 
 (local conditions {:equal 0x0
                    :not-equal 0x1

test/assembler/opcodes.fnl

@@ -0,0 +1,2 @@
+(local t (require :deps.faith))
+(local opcodes (require :host.assembler.opcodes))