Booleans and if function

docs/syntax.md

@@ -1,3 +1,5 @@
+To create a comment, begin a line with a hash (#) symbol, like python.
+
 ## create var *bytes = Value
 
 Creates the variable "var" with a set number of bytes allocated to it, and initialises its value.
@@ -15,4 +17,16 @@ Example: `print var`
 
 Changes the value of an already created value.
 
-Example `set var = "World"`
+Example: `set var = "World"`
+
+## if bool
+
+Runs code if a boolean is true.
+
+Example: 
+```
+create *1 bool = true
+if bool {
+  set var = "BASM!"
+}
+```

src/main.py

@@ -1,9 +1,12 @@
+from signal import Sigmasks
 import string
+import math as m
 from sys import argv
 file = open(argv[1]).readlines();
 bfcode = ""
 variables = []
 varbytes = []
+
 def removeChar(str, char):
     ans = ""
     for i in str:
@@ -23,8 +26,27 @@ def ord2(char):
     elif (len(char == 0)):
         return(0)
 
+def sign(num):
+    if num < 0:
+        return -1
+    elif num == 0:
+        return 0
+    else:
+        return 1
+
+def filewrite():
+    with open(argv[2], "w") as file:
+        file.write(bfcode)
+        
+filewrite()
 for i in file:
-    if (i.split(" ")[0] == "create"):
+    while (i[0] == " "):
+        i = i.split(" ", 1)[1]
+    if (i[0] == "#"):
+        # Skip line if it is a comment
+        pass
+    # Create command
+    elif (i.split(" ")[0] == "create"):
         if (i[len(i)-1] == "\n"):
             i = removeEnd(i, 1)
         bfcode += ">>>>>>>>>>>>[[>>]>>]"
@@ -37,10 +59,14 @@ for i in file:
             a = a.split(" ", 1)[1]
             
         # Get type            
+        try:
+            a = int(a)
+            type = "int"
+        except ValueError:
             if ((a[0] == "\"") & (a[len(a)-1] == "\"")):
                 type = "string"
-        else:
-            type = "undefined"
+            elif (a == "true") | (a == "false"):
+                type = "bool"
             
         if (type == "string"):
             a = a.split("\"", 1)[1]
@@ -51,6 +77,29 @@ for i in file:
                     bfcode += "+" * ord(a[j]) + ">"
                 else:
                     bfcode += ">"
+        elif (type == "int"):
+            tempint = [sign(a)]
+            a = abs(a)
+            tempbytes = m.floor(m.log2(a)/8)
+            a = a % (256 ** (bytes - 1))
+            for j in range(bytes - 1):
+                if (a == 0):
+                    modulus = 1
+                else:
+                    modulus = 256 ** (bytes - j - 2)
+                tempint.append(m.floor(a / modulus))
+                a -= modulus * m.floor(a/modulus)
+            
+            for j in tempint:
+                bfcode += "++>"
+                bfcode += "+" * j + ">"
+        elif type == "bool":
+            if (bytes == 1):
+                bfcode += "++++>" + "+" * (a == "true") + ">"
+            else:
+                raise MemoryError("Booleans can only be made as 1 byte data.")
+        else:
+            raise TypeError("Could not find argument type")
         bfcode += "<<[[<<]<<]<<<<<<<<"
         
         variables.append(i.split(" ")[1].split("*")[0])
@@ -63,10 +112,50 @@ for i in file:
             bfcode += ">>>>>>>>>>>>"
             for j in range(variables.index(a)):
                 bfcode += "[>>]>>"
+            
             bfcode += "[>.>]<<[[<<]<<]<<<<<<<<++++++++++.[-]"
         else:
             raise NameError(f"Could not find variable {a}")
             
+    elif (i.split(" ")[0] == "printnum"):
+        varnum = variables.index(i.split(" ", 1)[1])
+        bfcode += ">>>>>>>>>>>>"
+        for j in range(varnum):
+            bfcode += "[>>]>>"
+        for j in range(varbytes[varnum]):
+            # Go to correct cell
+            bfcode += ">>" * j + ">"
+            # Create Copy
+            bfcode += "[" + "<<" * (j+1) + "+<+>" + ">>" * (j+1) + "-]"
+            bfcode += "<<" * j + "<"
+            bfcode += "<<[" + ">>" * (j+1) + ">+" + "<<" * (j+1) + "<-]>"
+            
+            # Move copy to end
+            bfcode += "[->"
+            for k in range(len(variables)-varnum+j):
+                bfcode += "[>>]>>"
+            bfcode += "+<<<<"
+            
+            for k in range(len(variables)-varnum+j):
+                bfcode += "[<<]<<"
+            bfcode += ">>>]>"   
+            
+            for k in range(len(variables)-varnum+j):
+                bfcode += "[>>]>>"
+                
+            # Split up digits (modulo copied from https://esolangs.org/wiki/Brainfuck_algorithms#Modulo)
+            bfcode += ">>++++++++++<<"
+            bfcode += "[->+>-[>+>>]>[+[-<+>]>+>>]<<<<<<]" # MODULO
+            bfcode += "++>[-]>[-]>[<<+>>-]>>>++++++++++<<"
+            bfcode += "[->+>-[>+>>]>[+[-<+>]>+>>]<<<<<<]" # MODULO
+            bfcode += "++<<++>>>[-]>[-]>[<<<<+>>>>-]>[<<<+>>>-]"
+            
+            # Return to start
+            bfcode += "<<<<"
+            bfcode += "[<<]<<" * (j+1)
+            bfcode += "[<]>"
+            
+    
     elif (i.split(" ")[0] == "set"):
         a = i.split(" ")[1]
         if a[len(a)-1] == "\n":
@@ -95,12 +184,54 @@ for i in file:
                         bfcode += ">"
                     else:
                         bfcode += "+" * ord(val[j]) + ">"
+            elif (type == "int"):
+                bytes = varbytes[variables.index(a)]
+                a = int(val)
+                tempint = [sign(a)]
+                a = abs(a)
+                tempbytes = m.floor(m.log2(a)/8)
+                a = a % (256 ** (bytes - 1))
+                for j in range(bytes - 1):
+                    if (a == 0):
+                        modulus = 1
+                    else:
+                        modulus = 256 ** (bytes - j - 2)
+                    tempint.append(m.floor(a / modulus))
+                    a -= modulus * m.floor(a/modulus)
+                for j in tempint:
+                    bfcode += "++>"
+                    bfcode += "+" * j + ">"
             bfcode += "<<[[<<]<<]<<<<<<<<"
         else:
             raise NameError(f"Could not find variable {a}")
             
+    elif (i.split(" ")[0] == "if"):
+        # Argument must be boolean
+        if not ('{' in i):
+            raise SyntaxError(f"Expected {{ in if statement")
+        a = removeChar(i.split(" ", 1)[1].split("{")[0], " ")
+        if (a in variables):
+            bfcode += ">>>>>>>>>>>>"
+            bfcode += "[>>]>>" * (variables.index(a))
+            
+            bfcode += ">[>+>+<<-]>[<+>-]>[-<<<"
+            bfcode += "[[<<]<<]"
+            bfcode += "+>>>>"
+            bfcode += "[>>]>>" * (variables.index(a))
+            bfcode += ">>>]"
+            
+            bfcode += "<<<<<<<[<<<<<<<<+>>>>>>>>-]<<<<<<<<"
+            
+            bfcode += "[-"
+        else:
+            raise NameError(f"Could not find variable {a}")
+            
+    elif (i == "}"):
+        bfcode += "]"
+    
+    # No command
     elif ((i != "\n") & (i != "")):
         raise ValueError(f"Invalid Command")
     
-with open(argv[2], "w") as file:
-    file.write(bfcode)
+print("DONE!")
+filewrite()

test.bf

@@ -0,0 +1 @@
+>>>>>>>>>>>>[[>>]>>]++++>+><<[[<<]<<]<<<<<<<<>>>>>>>>>>>>[[>>]>>]+++>+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++><<[[<<]<<]<<<<<<<<>>>>>>>>>>>>>[>+>+<<-]>[<+>-]>[-<<<[[<<]<<]+>>>>>>>]<<<<<<<[<<<<<<<<+>>>>>>>>-]<<<<<<<<[->>>>>>>>>>>>[>>]>>[-]>[-]><<+++>++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++><<[[<<]<<]<<<<<<<<]

tests/create.basm

@@ -0,0 +1,5 @@
+create bool *1 = true
+create string *1 = "A"
+if bool {
+    set string = "B"
+}

tests/main.basm

@@ -1,8 +0,0 @@
-create str1 *5 = "Hello"
-create str2 *10 = "Hello!"
-
-print str1
-print str2
-
-set str1 = "World!"
-print str1