error_handler.py

# Syntax Errors
class GoSyntaxError(SyntaxError):
    def __str__(self):
        context, line, column = self.args
        return "%s at line %s, column %s.\n\n%s" % (self.label, line, column, context)

class MissingValue(GoSyntaxError):
    label = "Missing Value"

class UnmatchedParenthesis(GoSyntaxError):
    label = "Unmatched Parenthesis"


# Semantic Errors
class GoSemanticError(Exception):
    pass

class OutOfLenght(GoSemanticError):
    # Array lenght different from defined number of elements
    pass

class TypeDifferentError(GoSemanticError):
    # Type different from specified
    pass

class UnsupportedOperationType(GoSemanticError):
    pass

def check_data_type(items):
    try:
        types = str(items[1].value)
        if types == "int":
            type_check(items[2].children, int)
            return True
        elif types == "string":
            type_check(items[2].children, str)
            return True
        elif types == "bool":
            type_check(items[2].children, bool)
            return True
    except TypeDifferentError:
        print("The elements you enter doesn't is conform with the type specificed")
        return False

def type_check(elements, type_to_check):
    if type_to_check != bool:
        for x in range(len(elements)):
            if not isinstance(elements[x], type_to_check):
                raise TypeDifferentError
    else:
        for x in range(len(elements)):
            if not isinstance(bool(elements[x]), bool):
                raise TypeDifferentError

def op_type(items):
    if type(items[0]) != type(items[1]):
        raise UnsupportedOperationType