Change ConstantScalarType to Type in DisallowedCallParam

This allows for more types to be matched, like a CallbackType. In my use case, I wanted to disallow `array_filter` without specifying a callback. But because the current `DisallowedCallParam` interface only works with `ConstantScalarType` this was not possible.
spaze · Jan 5, 2023 · 84946da · 84946da
1 parent f1f319b
commit 84946da
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Showing 12 changed files with 53 additions and 15 deletions.
diff --git a/src/DisallowedHelper.php b/src/DisallowedHelper.php
@@ -15,7 +15,6 @@
 use PHPStan\Reflection\MethodReflection;
 use PHPStan\Rules\RuleError;
 use PHPStan\Rules\RuleErrorBuilder;
-use PHPStan\Type\ConstantScalarType;
 use PHPStan\Type\ObjectType;
 use PHPStan\Type\Type;
 use PHPStan\Type\TypeWithClassName;
@@ -109,7 +108,7 @@ private function hasAllowedParams(Scope $scope, ?CallLike $node, array $allowCon
 
 		foreach ($allowConfig as $param) {
 			$type = $this->getArgType($node, $scope, $param);
-			if (!$type instanceof ConstantScalarType) {
+			if ($type === null) {
 				return !$paramsRequired;
 			}
 			if (!$param->matches($type)) {

diff --git a/src/Params/DisallowedCallParam.php b/src/Params/DisallowedCallParam.php
@@ -3,12 +3,12 @@
 
 namespace Spaze\PHPStan\Rules\Disallowed\Params;
 
-use PHPStan\Type\ConstantScalarType;
+use PHPStan\Type\Type;
 
 interface DisallowedCallParam
 {
 
-	public function matches(ConstantScalarType $type): bool;
+	public function matches(Type $type): bool;
 
 
 	public function getPosition(): ?int;

diff --git a/src/Params/DisallowedCallParamValue.php b/src/Params/DisallowedCallParamValue.php
@@ -3,7 +3,7 @@
 
 namespace Spaze\PHPStan\Rules\Disallowed\Params;
 
-use PHPStan\Type\ConstantScalarType;
+use PHPStan\Type\Type;
 
 /**
  * @template T of int|bool|string|null
@@ -21,7 +21,7 @@ abstract class DisallowedCallParamValue implements DisallowedCallParam
 	private $value;
 
 
-	abstract public function matches(ConstantScalarType $type): bool;
+	abstract public function matches(Type $type): bool;
 
 
 	/**

diff --git a/src/Params/DisallowedCallParamValueAny.php b/src/Params/DisallowedCallParamValueAny.php
@@ -3,15 +3,15 @@
 
 namespace Spaze\PHPStan\Rules\Disallowed\Params;
 
-use PHPStan\Type\ConstantScalarType;
+use PHPStan\Type\Type;
 
 /**
  * @extends DisallowedCallParamValue<int|bool|string|null>
  */
 final class DisallowedCallParamValueAny extends DisallowedCallParamValue
 {
 
-	public function matches(ConstantScalarType $type): bool
+	public function matches(Type $type): bool
 	{
 		return true;
 	}

diff --git a/src/Params/DisallowedCallParamValueCaseInsensitiveExcept.php b/src/Params/DisallowedCallParamValueCaseInsensitiveExcept.php
@@ -5,15 +5,19 @@
 
 use PHPStan\Type\Constant\ConstantStringType;
 use PHPStan\Type\ConstantScalarType;
+use PHPStan\Type\Type;
 
 /**
  * @extends DisallowedCallParamValue<int|bool|string|null>
  */
 class DisallowedCallParamValueCaseInsensitiveExcept extends DisallowedCallParamValue
 {
 
-	public function matches(ConstantScalarType $type): bool
+	public function matches(Type $type): bool
 	{
+		if (!$type instanceof ConstantScalarType) {
+			return false;
+		}
 		$a = is_string($this->getValue()) ? strtolower($this->getValue()) : $this->getValue();
 		$b = $type instanceof ConstantStringType ? strtolower($type->getValue()) : $type->getValue();
 		return $a !== $b;

diff --git a/src/Params/DisallowedCallParamValueExcept.php b/src/Params/DisallowedCallParamValueExcept.php
@@ -4,15 +4,19 @@
 namespace Spaze\PHPStan\Rules\Disallowed\Params;
 
 use PHPStan\Type\ConstantScalarType;
+use PHPStan\Type\Type;
 
 /**
  * @extends DisallowedCallParamValue<int|bool|string|null>
  */
 class DisallowedCallParamValueExcept extends DisallowedCallParamValue
 {
 
-	public function matches(ConstantScalarType $type): bool
+	public function matches(Type $type): bool
 	{
+		if (!$type instanceof ConstantScalarType) {
+			return false;
+		}
 		return $this->getValue() !== $type->getValue();
 	}
 

diff --git a/src/Params/DisallowedCallParamValueFlagExcept.php b/src/Params/DisallowedCallParamValueFlagExcept.php
@@ -4,15 +4,15 @@
 namespace Spaze\PHPStan\Rules\Disallowed\Params;
 
 use PHPStan\Type\Constant\ConstantIntegerType;
-use PHPStan\Type\ConstantScalarType;
+use PHPStan\Type\Type;
 
 /**
  * @extends DisallowedCallParamValue<int>
  */
 class DisallowedCallParamValueFlagExcept extends DisallowedCallParamValue
 {
 
-	public function matches(ConstantScalarType $type): bool
+	public function matches(Type $type): bool
 	{
 		if (!$type instanceof ConstantIntegerType) {
 			return false;

diff --git a/src/Params/DisallowedCallParamValueFlagSpecific.php b/src/Params/DisallowedCallParamValueFlagSpecific.php
@@ -4,15 +4,15 @@
 namespace Spaze\PHPStan\Rules\Disallowed\Params;
 
 use PHPStan\Type\Constant\ConstantIntegerType;
-use PHPStan\Type\ConstantScalarType;
+use PHPStan\Type\Type;
 
 /**
  * @extends DisallowedCallParamValue<int>
  */
 class DisallowedCallParamValueFlagSpecific extends DisallowedCallParamValue
 {
 
-	public function matches(ConstantScalarType $type): bool
+	public function matches(Type $type): bool
 	{
 		if (!$type instanceof ConstantIntegerType) {
 			return false;

diff --git a/src/Params/DisallowedCallParamValueSpecific.php b/src/Params/DisallowedCallParamValueSpecific.php
@@ -4,15 +4,19 @@
 namespace Spaze\PHPStan\Rules\Disallowed\Params;
 
 use PHPStan\Type\ConstantScalarType;
+use PHPStan\Type\Type;
 
 /**
  * @extends DisallowedCallParamValue<int|bool|string|null>
  */
 class DisallowedCallParamValueSpecific extends DisallowedCallParamValue
 {
 
-	public function matches(ConstantScalarType $type): bool
+	public function matches(Type $type): bool
 	{
+		if (!$type instanceof ConstantScalarType) {
+			return false;
+		}
 		return $this->getValue() === $type->getValue();
 	}
 

diff --git a/tests/Calls/FunctionCallsTest.php b/tests/Calls/FunctionCallsTest.php
@@ -160,6 +160,17 @@ protected function getRule(): Rule
 						],
 					],
 				],
+				[
+					'function' => 'array_filter()',
+					'message' => 'callback parameter must be given.',
+					'allowIn' => [
+						'../src/disallowed-allowed/*.php',
+						'../src/*-allow/*.*',
+					],
+					'allowParamsAnywhereAnyValue' => [
+						2,
+					],
+				],
 			]
 		);
 	}
@@ -252,6 +263,10 @@ public function testRule(): void
 				'Calling htmlspecialchars() is forbidden, because reasons',
 				71,
 			],
+			[
+				'Calling array_filter() is forbidden, callback parameter must be given.',
+				74,
+			],
 		]);
 		// Based on the configuration above, no errors in this file:
 		$this->analyse([__DIR__ . '/../src/disallowed-allow/functionCalls.php'], [

diff --git a/tests/src/disallowed-allow/functionCalls.php b/tests/src/disallowed-allow/functionCalls.php
@@ -69,3 +69,9 @@
 htmlspecialchars('foo', ENT_QUOTES);
 htmlspecialchars('foo', ENT_DISALLOWED | ENT_QUOTES);
 htmlspecialchars('foo', ENT_DISALLOWED | ENT_QUOTES | ENT_HTML5);
+
+// allowed only with callback
+array_filter(['1', '2']);
+array_filter(['1', '2'], function () {
+	return true;
+});
diff --git a/tests/src/disallowed/functionCalls.php b/tests/src/disallowed/functionCalls.php
@@ -69,3 +69,9 @@
 htmlspecialchars('foo', ENT_QUOTES);
 htmlspecialchars('foo', ENT_DISALLOWED | ENT_QUOTES);
 htmlspecialchars('foo', ENT_DISALLOWED | ENT_QUOTES | ENT_HTML5);
+
+// allowed only with callback
+array_filter(['1', '2']);
+array_filter(['1', '2'], function () {
+	return true;
+});