interpreter

var (
	ErrUnknownNode         = fmt.Errorf("Unknown node")
	ErrImmutableVariable   = fmt.Errorf("Variable is immutable")
	ErrExpression          = fmt.Errorf("Expression error")
	ErrImportError         = fmt.Errorf("Import error")
	ErrUndefinedVariable   = fmt.Errorf("Undefined variable")
	ErrUnsupported         = fmt.Errorf("Unsupported operation")
	ErrUndefinedFunction   = fmt.Errorf("Undefined function")
	ErrExpectedFunction    = fmt.Errorf("Expected function")
	ErrTypeMismatch        = fmt.Errorf("Type mismatch")
	ErrAst                 = fmt.Errorf("Ast error")
	ErrValueError          = fmt.Errorf("Value error")
	ErrInvalid             = fmt.Errorf("Invalid syntax")
	ErrInvalidImpl         = fmt.Errorf("Invalid implementation")
	ErrPrototype           = fmt.Errorf("Prototype error")
	ErrStructInstantiation = fmt.Errorf("Failed to instantiate a struct")
	ErrVoidAsValue         = fmt.Errorf("Cannot use void as value")
)