Add proper types to Doctrine\DBAL\Query namespace.

lib/Doctrine/DBAL/Query/Expression/CompositeExpression.php

@@ -41,7 +41,7 @@ class CompositeExpression implements Countable
      * @param string          $type  Instance type of composite expression.
      * @param self[]|string[] $parts Composition of expressions to be joined on composite expression.
      */
-    public function __construct($type, array $parts = [])
+    public function __construct(string $type, array $parts = [])
     {
         $this->type = $type;
 
@@ -51,11 +51,11 @@ class CompositeExpression implements Countable
     /**
      * Adds multiple parts to composite expression.
      *
-     * @param self[]|string[] $parts
+     * @param array<int, self|string> $parts
      *
-     * @return \Doctrine\DBAL\Query\Expression\CompositeExpression
+     * @return $this
      */
-    public function addMultiple(array $parts = [])
+    public function addMultiple(array $parts = []) : self
     {
         foreach ($parts as $part) {
             $this->add($part);
@@ -67,11 +67,11 @@ class CompositeExpression implements Countable
     /**
      * Adds an expression to composite expression.
      *
-     * @param mixed $part
+     * @param self|string $part
      *
-     * @return \Doctrine\DBAL\Query\Expression\CompositeExpression
+     * @return $this
      */
-    public function add($part)
+    public function add($part) : self
     {
         if (empty($part)) {
             return $this;
@@ -88,20 +88,16 @@ class CompositeExpression implements Countable
 
     /**
      * Retrieves the amount of expressions on composite expression.
-     *
-     * @return int
      */
-    public function count()
+    public function count() : int
     {
         return count($this->parts);
     }
 
     /**
      * Retrieves the string representation of this composite expression.
-     *
-     * @return string
      */
-    public function __toString()
+    public function __toString() : string
     {
         if ($this->count() === 1) {
             return (string) $this->parts[0];
@@ -112,10 +108,8 @@ class CompositeExpression implements Countable
 
     /**
      * Returns the type of this composite expression (AND/OR).
-     *
-     * @return string
      */
-    public function getType()
+    public function getType() : string
     {
         return $this->type;
     }

lib/Doctrine/DBAL/Query/Expression/ExpressionBuilder.php

@@ -51,10 +51,8 @@ class ExpressionBuilder
      *
      * @param mixed $x Optional clause. Defaults = null, but requires
      *                 at least one defined when converting to string.
-     *
-     * @return CompositeExpression
      */
-    public function andX($x = null)
+    public function andX($x = null) : CompositeExpression
     {
         return new CompositeExpression(CompositeExpression::TYPE_AND, func_get_args());
     }
@@ -70,10 +68,8 @@ class ExpressionBuilder
      *
      * @param mixed $x Optional clause. Defaults = null, but requires
      *                 at least one defined when converting to string.
-     *
-     * @return CompositeExpression
      */
-    public function orX($x = null)
+    public function orX($x = null) : CompositeExpression
     {
         return new CompositeExpression(CompositeExpression::TYPE_OR, func_get_args());
     }
@@ -84,10 +80,8 @@ class ExpressionBuilder
      * @param mixed  $x        The left expression.
      * @param string $operator One of the ExpressionBuilder::* constants.
      * @param mixed  $y        The right expression.
-     *
-     * @return string
      */
-    public function comparison($x, $operator, $y)
+    public function comparison($x, string $operator, $y) : string
     {
         return $x . ' ' . $operator . ' ' . $y;
     }
@@ -104,10 +98,8 @@ class ExpressionBuilder
      *
      * @param mixed $x The left expression.
      * @param mixed $y The right expression.
-     *
-     * @return string
      */
-    public function eq($x, $y)
+    public function eq($x, $y) : string
     {
         return $this->comparison($x, self::EQ, $y);
     }
@@ -123,10 +115,8 @@ class ExpressionBuilder
      *
      * @param mixed $x The left expression.
      * @param mixed $y The right expression.
-     *
-     * @return string
      */
-    public function neq($x, $y)
+    public function neq($x, $y) : string
     {
         return $this->comparison($x, self::NEQ, $y);
     }
@@ -142,10 +132,8 @@ class ExpressionBuilder
      *
      * @param mixed $x The left expression.
      * @param mixed $y The right expression.
-     *
-     * @return string
      */
-    public function lt($x, $y)
+    public function lt($x, $y) : string
     {
         return $this->comparison($x, self::LT, $y);
     }
@@ -161,10 +149,8 @@ class ExpressionBuilder
      *
      * @param mixed $x The left expression.
      * @param mixed $y The right expression.
-     *
-     * @return string
      */
-    public function lte($x, $y)
+    public function lte($x, $y) : string
     {
         return $this->comparison($x, self::LTE, $y);
     }
@@ -180,10 +166,8 @@ class ExpressionBuilder
      *
      * @param mixed $x The left expression.
      * @param mixed $y The right expression.
-     *
-     * @return string
      */
-    public function gt($x, $y)
+    public function gt($x, $y) : string
     {
         return $this->comparison($x, self::GT, $y);
     }
@@ -199,10 +183,8 @@ class ExpressionBuilder
      *
      * @param mixed $x The left expression.
      * @param mixed $y The right expression.
-     *
-     * @return string
      */
-    public function gte($x, $y)
+    public function gte($x, $y) : string
     {
         return $this->comparison($x, self::GTE, $y);
     }
@@ -211,10 +193,8 @@ class ExpressionBuilder
      * Creates an IS NULL expression with the given arguments.
      *
      * @param string $x The field in string format to be restricted by IS NULL.
-     *
-     * @return string
      */
-    public function isNull($x)
+    public function isNull(string $x) : string
     {
         return $x . ' IS NULL';
     }
@@ -223,10 +203,8 @@ class ExpressionBuilder
      * Creates an IS NOT NULL expression with the given arguments.
      *
      * @param string $x The field in string format to be restricted by IS NOT NULL.
-     *
-     * @return string
      */
-    public function isNotNull($x)
+    public function isNotNull(string $x) : string
     {
         return $x . ' IS NOT NULL';
     }
@@ -236,10 +214,8 @@ class ExpressionBuilder
      *
      * @param string $x Field in string format to be inspected by LIKE() comparison.
      * @param mixed  $y Argument to be used in LIKE() comparison.
-     *
-     * @return string
      */
-    public function like($x, $y/*, ?string $escapeChar = null */)
+    public function like(string $x, $y/*, ?string $escapeChar = null */) : string
     {
         return $this->comparison($x, 'LIKE', $y) .
             (func_num_args() >= 3 ? sprintf(' ESCAPE %s', func_get_arg(2)) : '');
@@ -250,10 +226,8 @@ class ExpressionBuilder
      *
      * @param string $x Field in string format to be inspected by NOT LIKE() comparison.
      * @param mixed  $y Argument to be used in NOT LIKE() comparison.
-     *
-     * @return string
      */
-    public function notLike($x, $y/*, ?string $escapeChar = null */)
+    public function notLike(string $x, $y/*, ?string $escapeChar = null */) : string
     {
         return $this->comparison($x, 'NOT LIKE', $y) .
             (func_num_args() >= 3 ? sprintf(' ESCAPE %s', func_get_arg(2)) : '');
@@ -264,10 +238,8 @@ class ExpressionBuilder
      *
      * @param string          $x The field in string format to be inspected by IN() comparison.
      * @param string|string[] $y The placeholder or the array of values to be used by IN() comparison.
-     *
-     * @return string
      */
-    public function in($x, $y)
+    public function in(string $x, $y) : string
     {
         return $this->comparison($x, 'IN', '(' . implode(', ', (array) $y) . ')');
     }
@@ -277,10 +249,8 @@ class ExpressionBuilder
      *
      * @param string          $x The field in string format to be inspected by NOT IN() comparison.
      * @param string|string[] $y The placeholder or the array of values to be used by NOT IN() comparison.
-     *
-     * @return string
      */
-    public function notIn($x, $y)
+    public function notIn(string $x, $y) : string
     {
         return $this->comparison($x, 'NOT IN', '(' . implode(', ', (array) $y) . ')');
     }
@@ -288,7 +258,7 @@ class ExpressionBuilder
     /**
      * Creates an SQL literal expression from the string.
      */
-    public function literal(string $input)
+    public function literal(string $input) : string
     {
         return $this->connection->quote($input);
     }