1 files changed, 110 insertions, 0 deletions
diff --git a/vendor/ipl/sql/src/Compat/FilterProcessor.php b/vendor/ipl/sql/src/Compat/FilterProcessor.php
new file mode 100644
index 0000000..7d779d7
--- /dev/null
+++ b/vendor/ipl/sql/src/Compat/FilterProcessor.php
@@ -0,0 +1,110 @@
+<?php
+
+namespace ipl\Sql\Compat;
+
+use InvalidArgumentException;
+use ipl\Sql\Filter\Exists;
+use ipl\Sql\Filter\NotExists;
+use ipl\Sql\Sql;
+use ipl\Stdlib\Filter;
+
+class FilterProcessor
+{
+    public static function assembleFilter(Filter\Rule $filter, $level = 0)
+    {
+        $condition = null;
+
+        if ($filter instanceof Filter\Chain) {
+            if ($filter instanceof Filter\All) {
+                $operator = Sql::ALL;
+            } elseif ($filter instanceof Filter\Any) {
+                $operator = Sql::ANY;
+            } elseif ($filter instanceof Filter\None) {
+                $operator = Sql::NOT_ALL;
+            }
+
+            if (! isset($operator)) {
+                throw new InvalidArgumentException(sprintf('Cannot render filter: %s', get_class($filter)));
+            }
+
+            if (! $filter->isEmpty()) {
+                foreach ($filter as $filterPart) {
+                    $part = static::assembleFilter($filterPart, $level + 1);
+                    if ($part) {
+                        if ($condition === null) {
+                            $condition = [$operator, [$part]];
+                        } else {
+                            if ($condition[0] === $operator) {
+                                $condition[1][] = $part;
+                            } elseif ($operator === Sql::NOT_ALL) {
+                                $condition = [Sql::ALL, [$condition, [$operator, [$part]]]];
+                            } elseif ($operator === Sql::NOT_ANY) {
+                                $condition = [Sql::ANY, [$condition, [$operator, [$part]]]];
+                            } else {
+                                $condition = [$operator, [$condition, $part]];
+                            }
+                        }
+                    }
+                }
+            } else {
+                // TODO(el): Explicitly return the empty string due to the FilterNot case?
+            }
+        } else {
+            /** @var Filter\Condition $filter */
+            $condition = [Sql::ALL, static::assemblePredicate($filter)];
+        }
+
+        return $condition;
+    }
+
+    public static function assemblePredicate(Filter\Condition $filter)
+    {
+        $column = $filter->getColumn();
+        $expression = $filter->getValue();
+
+        if (is_array($expression)) {
+            if ($filter instanceof Filter\UnEqual || $filter instanceof Filter\Unlike) {
+                return ["($column NOT IN (?) OR $column IS NULL)" => $expression];
+            } elseif ($filter instanceof Filter\Equal || $filter instanceof Filter\Like) {
+                return ["$column IN (?)" => $expression];
+            }
+
+            throw new InvalidArgumentException(
+                'Unable to render array expressions with operators other than equal or not equal'
+            );
+        } elseif (
+            ($filter instanceof Filter\Like || $filter instanceof Filter\Unlike)
+            && strpos($expression, '*') !== false
+        ) {
+            if ($expression === '*') {
+                return ["$column IS " . ($filter instanceof Filter\Like ? 'NOT ' : '') . 'NULL'];
+            } elseif ($filter instanceof Filter\Unlike) {
+                return ["($column NOT LIKE ? OR $column IS NULL)" => str_replace('*', '%', $expression)];
+            } else {
+                return ["$column LIKE ?" => str_replace('*', '%', $expression)];
+            }
+        } elseif ($filter instanceof Filter\Unequal || $filter instanceof Filter\Unlike) {
+            return ["($column != ? OR $column IS NULL)" => $expression];
+        } else {
+            if ($filter instanceof Filter\Like || $filter instanceof Filter\Equal) {
+                $operator = '=';
+            } elseif ($filter instanceof Filter\GreaterThan) {
+                $operator = '>';
+            } elseif ($filter instanceof Filter\GreaterThanOrEqual) {
+                $operator = '>=';
+            } elseif ($filter instanceof Filter\LessThan) {
+                $operator = '<';
+            } elseif ($filter instanceof Filter\LessThanOrEqual) {
+                $operator = '<=';
+            } elseif ($filter instanceof Exists) {
+                $operator = 'EXISTS';
+            } elseif ($filter instanceof NotExists) {
+                $operator = 'NOT EXISTS';
+            } else {
+                throw new InvalidArgumentException(sprintf('Cannot render filter: %s', get_class($filter)));
+            }
+
+            return ["$column $operator ?" => $expression];
+        }
+    }
+}