qossmic · smoench · Feb 26, 2021 · Feb 22, 2021
diff --git a/src/OutputFormatter/ConsoleOutputFormatter.php b/src/OutputFormatter/ConsoleOutputFormatter.php
@@ -4,6 +4,7 @@
 
 namespace Qossmic\Deptrac\OutputFormatter;
 
+use function count;
 use Qossmic\Deptrac\AstRunner\AstMap\FileOccurrence;
 use Qossmic\Deptrac\Console\Command\AnalyzeCommand;
 use Qossmic\Deptrac\Console\Output;
@@ -57,6 +58,10 @@ public function finish(
             $this->printErrors($context, $output);
         }
 
+        if ($context->hasWarnings()) {
+            $this->printWarnings($context, $output);
+        }
+
         $this->printSummary($context, $output);
     }
 
@@ -104,10 +109,12 @@ private function printInheritPath(Output $output, InheritDependency $dependency)
 
     private function printSummary(Context $context, Output $output): void
     {
-        $violationCount = \count($context->violations());
-        $skippedViolationCount = \count($context->skippedViolations());
-        $uncoveredCount = \count($context->uncovered());
-        $allowedCount = \count($context->allowed());
+        $violationCount = count($context->violations());
+        $skippedViolationCount = count($context->skippedViolations());
+        $uncoveredCount = count($context->uncovered());
+        $allowedCount = count($context->allowed());
+        $warningsCount = count($context->warnings());
+        $errorsCount = count($context->errors());
 
         $output->writeLineFormatted('');
         $output->writeLineFormatted('Report:');
@@ -133,6 +140,20 @@ private function printSummary(Context $context, Output $output): void
             )
         );
         $output->writeLineFormatted(sprintf('<info>Allowed: %d</info>', $allowedCount));
+        $output->writeLineFormatted(
+            sprintf(
+                '<fg=%s>Warnings: %d</>',
+                $warningsCount > 0 ? 'yellow' : 'default',
+                $warningsCount
+            )
+        );
+        $output->writeLineFormatted(
+            sprintf(
+                '<fg=%s>Errors: %d</>',
+                $errorsCount > 0 ? 'red' : 'default',
+                $errorsCount
+            )
+        );
     }
 
     private function printUncovered(Context $context, Output $output): void
@@ -173,4 +194,12 @@ private function printErrors(Context $context, Output $output): void
             $output->writeLineFormatted(sprintf('<fg=red>[ERROR]</> %s', $error->toString()));
         }
     }
+
+    private function printWarnings(Context $context, Output $output): void
+    {
+        $output->writeLineFormatted('');
+        foreach ($context->warnings() as $error) {
+            $output->writeLineFormatted(sprintf('<fg=yellow>[WARNING]</> %s', $error->toString()));
+        }
+    }
 }
diff --git a/src/OutputFormatter/GithubActionsOutputFormatter.php b/src/OutputFormatter/GithubActionsOutputFormatter.php
@@ -88,6 +88,10 @@ public function finish(Context $context, Output $output, OutputFormatterInput $o
         if ($context->hasErrors()) {
             $this->printErrors($context, $output);
         }
+
+        if ($context->hasWarnings()) {
+            $this->printWarnings($context, $output);
+        }
     }
 
     private function determineLogLevel(Rule $rule): string
@@ -148,4 +152,11 @@ private function printErrors(Context $context, Output $output): void
             $output->writeLineFormatted('::error ::'.$error->toString());
         }
     }
+
+    private function printWarnings(Context $context, Output $output): void
+    {
+        foreach ($context->warnings() as $error) {
+            $output->writeLineFormatted('::warning ::'.$error->toString());
+        }
+    }
 }
diff --git a/src/OutputFormatter/TableOutputFormatter.php b/src/OutputFormatter/TableOutputFormatter.php
@@ -4,6 +4,7 @@
 
 namespace Qossmic\Deptrac\OutputFormatter;
 
+use function count;
 use Qossmic\Deptrac\Console\Command\AnalyzeCommand;
 use Qossmic\Deptrac\Console\Output;
 use Qossmic\Deptrac\Dependency\InheritDependency;
@@ -14,6 +15,7 @@
 use Qossmic\Deptrac\RulesetEngine\SkippedViolation;
 use Qossmic\Deptrac\RulesetEngine\Uncovered;
 use Qossmic\Deptrac\RulesetEngine\Violation;
+use Qossmic\Deptrac\RulesetEngine\Warning;
 use Symfony\Component\Console\Helper\TableSeparator;
 
 final class TableOutputFormatter implements OutputFormatterInterface
@@ -73,6 +75,10 @@ public function finish(
             $this->printErrors($context, $output);
         }
 
+        if ($context->hasWarnings()) {
+            $this->printWarnings($context, $output);
+        }
+
         $this->printSummary($context, $output);
     }
 
@@ -123,10 +129,12 @@ private function formatInheritPath(InheritDependency $dependency): string
 
     private function printSummary(Context $context, Output $output): void
     {
-        $violationCount = \count($context->violations());
-        $skippedViolationCount = \count($context->skippedViolations());
-        $uncoveredCount = \count($context->uncovered());
-        $allowedCount = \count($context->allowed());
+        $violationCount = count($context->violations());
+        $skippedViolationCount = count($context->skippedViolations());
+        $uncoveredCount = count($context->uncovered());
+        $allowedCount = count($context->allowed());
+        $warningsCount = count($context->warnings());
+        $errorsCount = count($context->errors());
 
         $style = $output->getStyle();
         $style->newLine();
@@ -136,7 +144,9 @@ private function printSummary(Context $context, Output $output): void
             ['Violations' => sprintf('<fg=%s>%d</>', $violationCount > 0 ? 'red' : 'default', $violationCount)],
             ['Skipped violations' => sprintf('<fg=%s>%d</>', $skippedViolationCount > 0 ? 'yellow' : 'default', $skippedViolationCount)],
             ['Uncovered' => sprintf('<fg=%s>%d</>', $uncoveredCount > 0 ? 'yellow' : 'default', $uncoveredCount)],
-            ['Allowed' => $allowedCount]
+            ['Allowed' => $allowedCount],
+            ['Warnings' => sprintf('<fg=%s>%d</>', $warningsCount > 0 ? 'yellow' : 'default', $warningsCount)],
+            ['Errors' => sprintf('<fg=%s>%d</>', $errorsCount > 0 ? 'red' : 'default', $errorsCount)]
         );
     }
 
@@ -175,4 +185,17 @@ static function (Error $error) {
             )
         );
     }
+
+    private function printWarnings(Context $context, Output $output): void
+    {
+        $output->getStyle()->table(
+            ['<fg=yellow>Warnings</>'],
+            array_map(
+                static function (Warning $warning) {
+                    return [$warning->toString()];
+                },
+                $context->warnings()
+            )
+        );
+    }
 }
diff --git a/src/RulesetEngine.php b/src/RulesetEngine.php
@@ -15,6 +15,7 @@
 use Qossmic\Deptrac\RulesetEngine\SkippedViolationHelper;
 use Qossmic\Deptrac\RulesetEngine\Uncovered;
 use Qossmic\Deptrac\RulesetEngine\Violation;
+use Qossmic\Deptrac\RulesetEngine\Warning;
 
 class RulesetEngine
 {
@@ -24,13 +25,19 @@ public function process(
         Configuration $configuration
     ): Context {
         $rules = [];
+        $warnings = [];
 
         $configurationRuleset = $configuration->getRuleset();
         $skippedViolationHelper = new SkippedViolationHelper($configuration->getSkipViolations());
 
         foreach ($dependencyResult->getDependenciesAndInheritDependencies() as $dependency) {
             $layerNames = $classNameLayerResolver->getLayersByClassName($dependency->getClassLikeNameA());
 
+            $classLikeANameString = $dependency->getClassLikeNameA()->toString();
+            if (!isset($warnings[$classLikeANameString]) && count($layerNames) > 1) {
+                $warnings[$classLikeANameString] = Warning::classLikeIsInMoreThanOneLayer($dependency->getClassLikeNameA(), $layerNames);
+            }
+
             foreach ($layerNames as $layerName) {
                 $allowedDependencies = $configurationRuleset->getAllowedDependencies($layerName);
 
@@ -70,7 +77,7 @@ public function process(
             }
         }
 
-        return new Context($rules, $errors);
+        return new Context($rules, $errors, $warnings);
     }
 
     private function ignoreUncoveredInternalClass(Configuration $configuration, ClassLikeName $classLikeName): bool

diff --git a/src/RulesetEngine/Context.php b/src/RulesetEngine/Context.php
@@ -4,6 +4,9 @@
 
 namespace Qossmic\Deptrac\RulesetEngine;
 
+use function array_filter;
+use function count;
+
 final class Context
 {
     /**
@@ -14,15 +17,21 @@ final class Context
      * @var Error[]
      */
     private $errors;
+    /**
+     * @var Warning[]
+     */
+    private $warnings;
 
     /**
-     * @param Rule[]  $rules
-     * @param Error[] $errors
+     * @param Rule[]    $rules
+     * @param Error[]   $errors
+     * @param Warning[] $warnings
      */
-    public function __construct(array $rules, array $errors)
+    public function __construct(array $rules, array $errors, array $warnings)
     {
         $this->rules = $rules;
         $this->errors = $errors;
+        $this->warnings = $warnings;
     }
 
     /**
@@ -85,7 +94,7 @@ public function allowed(): array
 
     public function hasErrors(): bool
     {
-        return \count($this->errors) > 0;
+        return count($this->errors) > 0;
     }
 
     /**
@@ -95,4 +104,17 @@ public function errors(): array
     {
         return $this->errors;
     }
+
+    public function hasWarnings(): bool
+    {
+        return count($this->warnings) > 0;
+    }
+
+    /**
+     * @return Warning[]
+     */
+    public function warnings(): array
+    {
+        return $this->warnings;
+    }
 }
diff --git a/src/RulesetEngine/Warning.php b/src/RulesetEngine/Warning.php
@@ -0,0 +1,39 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Qossmic\Deptrac\RulesetEngine;
+
+use Qossmic\Deptrac\AstRunner\AstMap\ClassLikeName;
+
+final class Warning
+{
+    /**
+     * @var string
+     */
+    private $message;
+
+    private function __construct(string $message)
+    {
+        $this->message = $message;
+    }
+
+    /**
+     * @param string[] $layerNames
+     */
+    public static function classLikeIsInMoreThanOneLayer(
+        ClassLikeName $getClassLikeNameA,
+        array $layerNames
+    ): self {
+        return new self(sprintf(
+            '%s is in more than one layer ["%s"]. It is recommended that one class should only be in one layer.',
+            $getClassLikeNameA->toString(),
+            implode('", "', $layerNames)
+        ));
+    }
+
+    public function toString(): string
+    {
+        return $this->message;
+    }
+}
diff --git a/tests/OutputFormatter/BaselineOutputFormatterTest.php b/tests/OutputFormatter/BaselineOutputFormatterTest.php
@@ -105,7 +105,7 @@ public function testBasic(array $rules, string $expectedOutput): void
 
             $formatter = new BaselineOutputFormatter();
             $formatter->finish(
-                new Context($rules, []),
+                new Context($rules, [], []),
                 $this->createSymfonyOutput($output),
                 new OutputFormatterInput(['baseline-dump' => $generatedBaselineFile])
             );