errors.py

class CompilerError(Exception):
    """Base class for all compiler errors"""
    def __init__(self, message, line=None, column=None):
        self.message = message
        self.line = line
        self.column = column
        super().__init__(self.format_message())
    
    def format_message(self):
        if self.line is not None:
            return f"Line {self.line}: {self.message}"
        return self.message


class LexicalError(CompilerError):
    """Lexical analysis error"""
    pass


class SyntaxError(CompilerError):
    """Syntax analysis error"""
    pass


class SemanticError(CompilerError):
    """Semantic analysis error"""
    pass


class LanguageNotSupportedError(CompilerError):
    """Language not supported error"""
    pass