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vendor/consolidation/output-formatters/src/Exception/AbstractDataFormatException.php

@@ -0,0 +1,57 @@
+<?php
+namespace Consolidation\OutputFormatters\Exception;
+
+/**
+ * Contains some helper functions used by exceptions in this project.
+ */
+abstract class AbstractDataFormatException extends \Exception
+{
+    /**
+     * Return a description of the data type represented by the provided parameter.
+     *
+     * @param \ReflectionClass $data The data type to describe. Note that
+     *   \ArrayObject is used as a proxy to mean an array primitive (or an ArrayObject).
+     * @return string
+     */
+    protected static function describeDataType($data)
+    {
+        if (is_array($data) || ($data instanceof \ReflectionClass)) {
+            if (is_array($data) || ($data->getName() == 'ArrayObject')) {
+                return 'an array';
+            }
+            return 'an instance of ' . $data->getName();
+        }
+        if (is_string($data)) {
+            return 'a string';
+        }
+        if (is_object($data)) {
+            return 'an instance of ' . get_class($data);
+        }
+        throw new \Exception("Undescribable data error: " . var_export($data, true));
+    }
+
+    protected static function describeAllowedTypes($allowedTypes)
+    {
+        if (is_array($allowedTypes) && !empty($allowedTypes)) {
+            if (count($allowedTypes) > 1) {
+                return static::describeListOfAllowedTypes($allowedTypes);
+            }
+            $allowedTypes = $allowedTypes[0];
+        }
+        return static::describeDataType($allowedTypes);
+    }
+
+    protected static function describeListOfAllowedTypes($allowedTypes)
+    {
+        $descriptions = [];
+        foreach ($allowedTypes as $oneAllowedType) {
+            $descriptions[] = static::describeDataType($oneAllowedType);
+        }
+        if (count($descriptions) == 2) {
+            return "either {$descriptions[0]} or {$descriptions[1]}";
+        }
+        $lastDescription = array_pop($descriptions);
+        $otherDescriptions = implode(', ', $descriptions);
+        return "one of $otherDescriptions or $lastDescription";
+    }
+}