feat: Implement for loops, break, and continue statements

examples/loops_advanced.fem

@@ -0,0 +1,21 @@
+my_list is ["apple", "banana", "cherry"]
+Tomgirl item is my_list Femboycore
+    UwU Boy item
+Periodt
+
+my_string is "Femboy"
+Tomgirl char is my_string Femboycore
+    UwU Boy char
+Periodt
+
+counter is 0
+Otokonoko counter < 10 Femboycore
+    counter is counter + 1
+    Femboy Feminine counter == 5 Femboycore
+        Break
+    Periodt
+    Femboy Feminine counter == 2 Femboycore
+        Continue
+    Periodt
+    UwU Boy counter
+Periodt

src/interpreter.py

@@ -104,7 +104,36 @@ class Interpreter:
 
     def visit_WhileStatement(self, node):
         while self.visit(node.condition):
-            self.visit(node.body)
+            try:
+                self.visit(node.body)
+            except BreakLoop:
+                break
+            except ContinueLoop:
+                continue
+
+    def visit_ForStatement(self, node):
+        iterable = self.visit(node.iterable)
+        if not isinstance(iterable, (list, str)):
+            raise TypeError(f"'for' loop can only iterate over lists or strings, got {type(iterable).__name__}")
+
+        for item in iterable:
+            self.scope_stack.append({})
+            self.current_scope[node.var_name] = item
+            try:
+                self.visit(node.body)
+            except BreakLoop:
+                self.scope_stack.pop()
+                break
+            except ContinueLoop:
+                self.scope_stack.pop()
+                continue
+            self.scope_stack.pop()
+
+    def visit_BreakStatement(self, node):
+        raise BreakLoop()
+
+    def visit_ContinueStatement(self, node):
+        raise ContinueLoop()
 
     def visit_List(self, node):
         elements = [self.visit(element) for element in node.elements]
@@ -187,3 +216,15 @@ class Interpreter:
 class ReturnValue(Exception):
     def __init__(self, value):
         self.value = value
+
+class BreakLoop(Exception):
+    pass
+
+class ContinueLoop(Exception):
+    pass
+
+class BreakLoop(Exception):
+    pass
+
+class ContinueLoop(Exception):
+    pass

src/lexer.py

@@ -149,6 +149,21 @@ class Lexer:
         if re.match(r'\bCringe\b', self.text[self.pos:]):
             self.pos += len('Cringe')
             return Token('CRINGE', False)
+        if re.match(r'\bGhosted\b', self.text[self.pos:]):
+            self.pos += len('Ghosted')
+            return Token('NULL', None)
+        if re.match(r'\bTomgirl\b', self.text[self.pos:]):
+            self.pos += len('Tomgirl')
+            return Token('FOR', 'Tomgirl')
+        if re.match(r'\bSlay\b', self.text[self.pos:]):
+            self.pos += len('Slay')
+            return Token('PASS', 'Slay')
+        if re.match(r'\bBreak\b', self.text[self.pos:]):
+            self.pos += len('Break')
+            return Token('BREAK', 'Break')
+        if re.match(r'\bContinue\b', self.text[self.pos:]):
+            self.pos += len('Continue')
+            return Token('CONTINUE', 'Continue')
         if re.match(r'\band\b', self.text[self.pos:]):
             self.pos += len('and')
             return Token('AND', 'and')

src/parser.py

@@ -81,6 +81,18 @@ class BreakStatement(AST):
 class ContinueStatement(AST):
     pass
 
+class ForStatement(AST):
+    def __init__(self, var_name, iterable, body):
+        self.var_name = var_name
+        self.iterable = iterable
+        self.body = body
+
+class BreakStatement(AST):
+    pass
+
+class ContinueStatement(AST):
+    pass
+
 class FunctionDefinition(AST):
     def __init__(self, name, parameters, body):
         self.name = name