Equal command

src/codegen.py

@@ -244,6 +244,92 @@ def generateCode(line: list[str], offset: int) -> str:
         
         returnval += '<[<]' + '<' * (offset-1)
         return returnval
+    elif keyword == 'equal':
+        if len(line) != 4:
+            error(f'Equal command requires 3 arguments (got {len(line)-1})')
+        returnval = '>' * offset + '[>]'
+        idx = getIndex(line[1])
+        for var in variables[:idx]:
+            if var.bytes >= 0:
+                returnval += '>' * (var.bytes+1)
+            elif var.bytes == -1:
+                returnval += '>[>]'
+            else:
+                error()
+        returnval += '>'
+        for i in range(4):
+            returnval += '[-'
+            returnval += '>' * (4-i)
+            for var in variables[(idx+1):]:
+                if var.bytes >= 0:
+                    returnval += '>' * (var.bytes+1)
+                elif var.bytes == -1:
+                    returnval += '>[>]'
+                else:
+                    error()
+            returnval += '>' * (i+1) + '+' + '<' * (i+1)
+            for var in reversed(variables[(idx+1):]):
+                if var.bytes >= 0:
+                    returnval += '<' * (var.bytes+1)
+                elif var.bytes == -1:
+                    returnval += '<[<]'
+                else:
+                    error()
+            returnval += '<<<<<+' + '>' * (i+1) + ']'
+            returnval += '<' * (i+1) + '[' + '>' * (i+1) + '+' + '<' * (i+1) + '-]' + '>' * (i+2)
+            
+        # Copy the above, but subtract from duplicate
+        idx2 = getIndex(line[2])
+        for var in variables[(idx+1):idx2]:
+            if var.bytes >= 0:
+                returnval += '>' * (var.bytes+1)
+            elif var.bytes == -1:
+                returnval += '>[>]'
+            else:
+                error()
+                
+        returnval += '>'
+        for i in range(4):
+            returnval += '[-'
+            returnval += '>' * (4-i)
+            for var in variables[(idx2+1):]:
+                if var.bytes >= 0:
+                    returnval += '>' * (var.bytes+1)
+                elif var.bytes == -1:
+                    returnval += '>[>]'
+                else:
+                    error()
+            returnval += '>' * (i+1) + '-' + '<' * (i+1)
+            for var in reversed(variables[(idx2+1):]):
+                if var.bytes >= 0:
+                    returnval += '<' * (var.bytes+1)
+                elif var.bytes == -1:
+                    returnval += '<[<]'
+                else:
+                    error()
+            returnval += '<<<<<+' + '>' * (i+1) + ']'
+            returnval += '<' * (i+1) + '[' + '>' * (i+1) + '+' + '<' * (i+1) + '-]' + '>' * (i+2)
+        
+        for var in variables[(idx2+1):]:
+            if var.bytes >= 0:
+                returnval += '>' * (var.bytes+1)
+            elif var.bytes == -1:
+                returnval += '>[>]'
+            else:
+                error()
+            
+        returnval += '>[<+>[-]]>[<<+>>[-]]>[<<<+>>>[-]]>[<<<<+>>>>[-]]<<<+<[>-<[-]]'
+        for var in reversed(variables):
+            if var.bytes >= 0:
+                returnval += '<' * (var.bytes+1)
+            elif var.bytes == -1:
+                returnval += '<[<]'
+            else:
+                error()
+                
+        returnval += '<[<]' + '<' * (offset-1)
+        variables.append(Variable(line[3], 1, 0))
+        return returnval
     elif keyword == 'if':
         if len(line) != 2:
             error(f'If command requires 1 argument (got {len(line)-1})')

syntax.md

@@ -14,6 +14,8 @@ Print a string: `print name`
 
 Increment an int: `inc name`
 
+Check if two numbers are equal, and store the result in `cond`: `equal num1 num2 cond`
+
 If statement: 
 ```py
 if bool

tests/test.basm

@@ -1,7 +1,13 @@
+int num1 796
 string str1 -1 "Hello, world!"
-int num 100
-bool cond true
-
+int num2 795
+string str2 -1 "World, hello?"
+equal num1 num2 cond
 if cond
-    inc num
+    print str1
+end if
+inc num2
+equal num1 num2 cond2
+if cond2
+    print str2
 end if