RuleDescriptionParser::addCompositeRule_recursion()

Complexity

Conditions	25
Paths	78

Size

Total Lines

128

Duplication

Lines	8
Ratio	6.25 %

Code Coverage

Tests	84
CRAP Score	25.0079

Importance

Changes

0

<?php
    protected static function addCompositeRule_recursion(
        array $rules_composition,
        AbstractOperationRule $recursion_position,
        $options
    ) {
        if (! array_filter($rules_composition, function ($rule_composition_part) {
            return is_string($rule_composition_part);
        })) {
            // at least one operator is required for operation rules
            throw new \InvalidArgumentException(
                "Please provide an operator for the operation: \n"
                .var_export($rules_composition, true)
            );
        }
        elseif ( 3 == count($rules_composition)
            && AbstractRule::isLeftOperand($rules_composition[0])
            && AbstractRule::isOperator($rules_composition[1])
        ) {
            // atomic or composit rules
            $operand_left  = $rules_composition[0];
            $operation     = $rules_composition[1];
            $operand_right = $rules_composition[2];

            $rule = AbstractRule::generateSimpleRule(
                $operand_left, $operation, $operand_right, $options
            );
            $recursion_position->addOperand($rule);
        }
        else {
            // operations
            if (   NotRule::operator == $rules_composition[0]
                || $rules_composition[0] == AbstractRule::findSymbolicOperator( NotRule::operator ) ) {
                $rule = new NotRule();
            }
            elseif (in_array( AndRule::operator, $rules_composition )

This code seems to be duplicated across your project.

                || in_array( AbstractRule::findSymbolicOperator( AndRule::operator ), $rules_composition)) {
                $rule = new AndRule();
            }
            elseif (in_array( OrRule::operator, $rules_composition )

This code seems to be duplicated across your project.

                || in_array( AbstractRule::findSymbolicOperator( OrRule::operator ), $rules_composition) ) {
                $rule = new OrRule();
            }
            else {
                throw new \InvalidArgumentException(
                    "A rule description seems to be an operation but do "
                    ."not contains a valid operator: ".var_export($rules_composition, true)
                );
            }

            $operator = $rule::operator;

            $operands_descriptions = array_filter(
                $rules_composition,
                function ($operand) use ($operator) {
                    return ! in_array($operand, [$operator, AbstractRule::findSymbolicOperator($operator)]);
                }
            );

            $non_true_rule_descriptions = array_filter(
                $operands_descriptions,
                function($operand) {
                    return null !== $operand  // no rule <=> true
                        || true !== $operand
                        ;
                }
            );

            foreach ($operands_descriptions as $i => $operands_description) {
                if (false === $operands_description) {
                    $operands_descriptions[ $i ] = ['and']; // FalseRule hack
                }
                elseif (null === $operands_description || true === $operands_description) {
                    $operands_description = ['and'];
                    if (empty($non_true_rule_descriptions)) {
                        throw new \LogicException(
                            "TrueRules are not implemented. Please add "
                            ."them to operations having other type of rules"
                        );
                    }

                    unset($operands_descriptions[ $i ]);
                }
            }

            $remaining_operations = array_filter(
                $operands_descriptions,
                function($operand) {
                    return ! is_array($operand)
                        && ! $operand instanceof AbstractRule
                        && ! $operand instanceof LogicalFilter
                        ;
                }
            );

            if (! empty($remaining_operations)) {
                throw new \InvalidArgumentException(
                    "Mixing different operations in the same rule level not implemented: \n["
                    . implode(', ', $remaining_operations)."]\n"
                    . 'in ' . var_export($rules_composition, true)
                );
            }

            if (NotRule::operator == $operator && 1 != count($operands_descriptions)) {
                throw new \InvalidArgumentException(
                    "Negations can have only one operand: \n"
                    .var_export($rules_composition, true)
                );
            }

            foreach ($operands_descriptions as $operands_description) {
                if ($operands_description instanceof AbstractRule) {
                    $rule->addOperand($operands_description);
                }
                elseif ($operands_description instanceof LogicalFilter) {
                    $rule->addOperand($operands_description->getRules());
                }
                else {
                    static::addCompositeRule_recursion(
                        $operands_description,
                        $rule,
                        $options
                    );
                }
            }

            $recursion_position->addOperand($rule);
        }
    }