If statements

src/codegen.py

@@ -79,6 +79,8 @@ def generateCode(line: list[str], offset: int) -> str:
                 line[3] = line[3][:(int(line[2])-len(line[3]))]
             for char in line[3]:
                 returnval += '+' * ord(char) + '>'
+            for char in range(int(line[2])-len(line[3])):
+                returnval += '>'
         else:
             error(f'Invalid string: {line[3]}')
             
@@ -173,8 +175,14 @@ def generateCode(line: list[str], offset: int) -> str:
         
         return returnval
     elif keyword == 'inc':
+        if len(line) != 2:
+            error(f'Inc command requires 1 argument (got {len(line)-1})')    
+        
         returnval = '>' * offset + '[>]'
         idx = getIndex(line[1])
+        if variables[idx].type != 2:
+            error(f'Cannot increment {line[1]}: Invalid type')
+        
         for var in variables[:idx]:
             if var.bytes > 0:
                 returnval += '>' * (var.bytes + 1)
@@ -236,5 +244,58 @@ def generateCode(line: list[str], offset: int) -> str:
         
         returnval += '<[<]' + '<' * (offset-1)
         return returnval
+    elif keyword == 'if':
+        if len(line) != 2:
+            error(f'If command requires 1 argument (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 var in reversed(variables[:idx]):
+            if var.bytes >= 0:
+                returnval += '<' * (var.bytes+1)
+            elif var.bytes == -1:
+                returnval += '<[<]'
+            else:
+                error()
+                
+        returnval += '<[<]<+>>[>]'
+        for var in variables[:idx]:
+            if var.bytes >= 0:
+                returnval += '>' * (var.bytes+1)
+            elif var.bytes == -1:
+                returnval += '>[>]'
+            else:
+                error()
+                
+        returnval += '>>-]<<'
+        
+        for var in reversed(variables[:idx]):
+            if var.bytes >= 0:
+                returnval += '<' * (var.bytes+1)
+            elif var.bytes == -1:
+                returnval += '<[<]'
+            else:
+                error()
+                
+        returnval += '<[<]<[' + '<' * (offset-2) + '+' + '>' * (offset-2) + '-]' + '<' * (offset-2) + '[-'
+        
+        return returnval
+    elif keyword == 'end':
+        if len(line) != 2:
+            error(f'End command requires 2 arguments (got {len(line)-1})')
+        
+        if line[1] == 'if':
+            return ']'
+        else:
+            error(f'Invalid argument for end: {line[1]}')
     else:
         error(f'Invalid keyword: {line[0]}')

src/preprocess.py

@@ -19,7 +19,7 @@ def preprocess(code: str) -> list[list[str]]:
             token += i
             if (i == '\"'):
                 isString = not(isString)
-        else:
+        elif token != '':
             tokenise[-1].append(token)
             token = ''
             

syntax.md

@@ -14,6 +14,13 @@ Print a string: `print name`
 
 Increment an int: `inc name`
 
+If statement: 
+```py
+if bool
+    # Code here
+end if
+```
+
 Example program (prints "Hello, World"):
 ```py
 string var 13 "Hello, world!" # Or -1 bytes for a dynamic string

tests/create.basm

@@ -1,5 +0,0 @@
-string str1 13 "Hello, world!"
-string str2 -1 "Testing dynamic string!"
-int var -1
-inc var
-inc var

tests/test.basm

@@ -0,0 +1,7 @@
+string str1 -1 "Hello, world!"
+int num 100
+bool cond true
+
+if cond
+    inc num
+end if