Breakpoints möglich gemacht

info4/kapitel-8/Interpreter/interpreter.py

@@ -12,6 +12,7 @@ regex_to_token = [(re.compile(r'\d+'), 'NUMBER'),
                   (re.compile(r'DO'), 'DO'),
                   (re.compile(r'END'), 'END'),
                   (re.compile(r';'), 'SEMICOLON'),
+                  (re.compile(r'BREAK'), 'BREAK'),
                   (re.compile(r'\n', re.MULTILINE), 'LINEBREAK'),
                   (re.compile(r'\s+'), 'WHITESPACE'),
                   (re.compile(r'[^\n]*'), 'UNKNOWN')]
@@ -26,12 +27,23 @@ class ErrorHandler:
         self.line_number = 0
 
     def handle_error(self, message):
-        msg = ["Fehler in Zeile " + str(self.line_number + 1), self.program.split("\n")[self.line_number], message]
+        msg = ["Fehler in Zeile " + str(self.line_number + 1),
+               self.program.split("\n")[self.line_number],
+               message]
         raise SyntaxError("\n".join(msg)) from None
 
     def increase_line(self):
         self.line_number += 1
 
+    def handle_break(self):
+        print("BREAK in Zeile " + str(self.line_number))
+        print("Aktueller Zustand:")
+        for k,v in values.items():
+            print("Variable " + k + ": " + str(v))
+        user_input = input("Drücke ENTER zum Fotfahren oder schreibe EXIT zum Beenden:")
+        if user_input.lower() == 'exit':
+            sys.exit(0)
+
 
 def process_assignment(value_list, forbidden_identifiers, identifier_token_1):
     identifier_1 = identifier_token_1.v
@@ -207,6 +219,9 @@ def next_token():
     new_token = lex.next()
     if new_token is None:
         return None
+    elif new_token.k == 'BREAK':
+        error_handler.handle_break()
+        return next_token()
     elif new_token.k == 'LINEBREAK':
         error_handler.increase_line()
         return next_token()
@@ -224,7 +239,7 @@ def next_nonempty_token(current_function, expected_token):
 
 
 def interpret(program):
-    global error_handler, lex
+    global error_handler, lex, values
     lex = lexer.Lexer(regex_to_token, program)
     error_handler = ErrorHandler(program)
     values = {}