first commit

vendor/sebastian/code-unit-reverse-lookup/src/Wizard.php

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+<?php
+/*
+ * This file is part of code-unit-reverse-lookup.
+ *
+ * (c) Sebastian Bergmann <sebastian@phpunit.de>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace SebastianBergmann\CodeUnitReverseLookup;
+
+/**
+ * @since Class available since Release 1.0.0
+ */
+class Wizard
+{
+    /**
+     * @var array
+     */
+    private $lookupTable = [];
+
+    /**
+     * @var array
+     */
+    private $processedClasses = [];
+
+    /**
+     * @var array
+     */
+    private $processedFunctions = [];
+
+    /**
+     * @param string $filename
+     * @param int    $lineNumber
+     *
+     * @return string
+     */
+    public function lookup($filename, $lineNumber)
+    {
+        if (!isset($this->lookupTable[$filename][$lineNumber])) {
+            $this->updateLookupTable();
+        }
+
+        if (isset($this->lookupTable[$filename][$lineNumber])) {
+            return $this->lookupTable[$filename][$lineNumber];
+        } else {
+            return $filename . ':' . $lineNumber;
+        }
+    }
+
+    private function updateLookupTable()
+    {
+        $this->processClassesAndTraits();
+        $this->processFunctions();
+    }
+
+    private function processClassesAndTraits()
+    {
+        foreach (array_merge(get_declared_classes(), get_declared_traits()) as $classOrTrait) {
+            if (isset($this->processedClasses[$classOrTrait])) {
+                continue;
+            }
+
+            $reflector = new \ReflectionClass($classOrTrait);
+
+            foreach ($reflector->getMethods() as $method) {
+                $this->processFunctionOrMethod($method);
+            }
+
+            $this->processedClasses[$classOrTrait] = true;
+        }
+    }
+
+    private function processFunctions()
+    {
+        foreach (get_defined_functions()['user'] as $function) {
+            if (isset($this->processedFunctions[$function])) {
+                continue;
+            }
+
+            $this->processFunctionOrMethod(new \ReflectionFunction($function));
+
+            $this->processedFunctions[$function] = true;
+        }
+    }
+
+    /**
+     * @param \ReflectionFunctionAbstract $functionOrMethod
+     */
+    private function processFunctionOrMethod(\ReflectionFunctionAbstract $functionOrMethod)
+    {
+        if ($functionOrMethod->isInternal()) {
+            return;
+        }
+
+        $name = $functionOrMethod->getName();
+
+        if ($functionOrMethod instanceof \ReflectionMethod) {
+            $name = $functionOrMethod->getDeclaringClass()->getName() . '::' . $name;
+        }
+
+        if (!isset($this->lookupTable[$functionOrMethod->getFileName()])) {
+            $this->lookupTable[$functionOrMethod->getFileName()] = [];
+        }
+
+        foreach (range($functionOrMethod->getStartLine(), $functionOrMethod->getEndLine()) as $line) {
+            $this->lookupTable[$functionOrMethod->getFileName()][$line] = $name;
+        }
+    }
+}