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<?php
/**
* PHPUnit_SkeletonGenerator
*
* Copyright (c) 2012, Sebastian Bergmann <sebastian@phpunit.de>.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* * Neither the name of Sebastian Bergmann nor the names of his
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* @package PHPUnit
* @subpackage SkeletonGenerator
* @author Sebastian Bergmann <sebastian@phpunit.de>
* @copyright 2012 Sebastian Bergmann <sebastian@phpunit.de>
* @license http://www.opensource.org/licenses/BSD-3-Clause The BSD 3-Clause License
* @link http://www.phpunit.de/
* @since File available since Release 1.0.0
*/
namespace SebastianBergmann\PHPUnit\SkeletonGenerator
{
/**
* Generator for class skeletons from test classes.
*
* @package PHPUnit
* @subpackage SkeletonGenerator
* @author Sebastian Bergmann <sebastian@phpunit.de>
* @copyright 2012 Sebastian Bergmann <sebastian@phpunit.de>
* @license http://www.opensource.org/licenses/BSD-3-Clause The BSD 3-Clause License
* @link http://www.phpunit.de/
* @since Class available since Release 1.0.0
*/
class ClassGenerator extends AbstractGenerator
{
/**
* Constructor.
*
* @param string $inClassName
* @param string $inSourceFile
* @param string $outClassName
* @param string $outSourceFile
* @throws \RuntimeException
*/
public function __construct($inClassName, $inSourceFile = '', $outClassName = '', $outSourceFile = '')
{
if (empty($inSourceFile)) {
$inSourceFile = $inClassName . '.php';
}
if (!is_file($inSourceFile)) {
throw new \RuntimeException(
sprintf(
'"%s" could not be opened.',
$inSourceFile
)
);
}
if (empty($outClassName)) {
$outClassName = substr($inClassName, 0, strlen($inClassName) - 4);
}
if (empty($outSourceFile)) {
$outSourceFile = dirname($inSourceFile) . DIRECTORY_SEPARATOR .
$outClassName . '.php';
}
parent::__construct(
$inClassName, $inSourceFile, $outClassName, $outSourceFile
);
}
/**
* Generates the class' source.
*
* @return mixed
*/
public function generate()
{
$methods = '';
foreach ($this->findTestedMethods() as $method) {
$methodTemplate = new \Text_Template(
sprintf(
'%s%stemplate%sMethod.tpl',
__DIR__,
DIRECTORY_SEPARATOR,
DIRECTORY_SEPARATOR
)
);
$methodTemplate->setVar(
array(
'methodName' => $method,
)
);
$methods .= $methodTemplate->render();
}
$classTemplate = new \Text_Template(
sprintf(
'%s%stemplate%sClass.tpl',
__DIR__,
DIRECTORY_SEPARATOR,
DIRECTORY_SEPARATOR
)
);
$classTemplate->setVar(
array(
'className' => $this->outClassName['fullyQualifiedClassName'],
'methods' => $methods,
'date' => date('Y-m-d'),
'time' => date('H:i:s'),
'version' => Version::id()
)
);
return $classTemplate->render();
}
/**
* Returns the methods of the class under test
* that are called from the test methods.
*
* @return array
*/
protected function findTestedMethods()
{
$setUpVariables = array();
$testedMethods = array();
$classes = $this->getClassesInFile($this->inSourceFile);
$testMethods = $classes[$this->inClassName['fullyQualifiedClassName']]['methods'];
unset($classes);
foreach ($testMethods as $name => $testMethod) {
if (strtolower($name) == 'setup') {
$setUpVariables = $this->findVariablesThatReferenceClass(
$testMethod['tokens']
);
break;
}
}
foreach ($testMethods as $name => $testMethod) {
$argVariables = array();
if (strtolower($name) == 'setup') {
continue;
}
$start = strpos($testMethod['signature'], '(') + 1;
$end = strlen($testMethod['signature']) - $start - 1;
$args = substr($testMethod['signature'], $start, $end);
foreach (explode(',', $args) as $arg) {
$arg = explode(' ', trim($arg));
if (count($arg) == 2) {
$type = $arg[0];
$var = $arg[1];
} else {
$type = NULL;
$var = $arg[0];
}
if ($type == $this->outClassName['fullyQualifiedClassName']) {
$argVariables[] = $var;
}
}
$variables = array_unique(
array_merge(
$setUpVariables,
$argVariables,
$this->findVariablesThatReferenceClass($testMethod['tokens'])
)
);
foreach ($testMethod['tokens'] as $i => $token) {
// Class::method()
if (is_array($token) && $token[0] == T_DOUBLE_COLON &&
is_array($testMethod['tokens'][$i-1]) &&
$testMethod['tokens'][$i-1][0] == T_STRING &&
$testMethod['tokens'][$i-1][1] == $this->outClassName['fullyQualifiedClassName'] &&
is_array($testMethod['tokens'][$i+1]) &&
$testMethod['tokens'][$i+1][0] == T_STRING &&
$testMethod['tokens'][$i+2] == '(') {
$testedMethods[] = $testMethod['tokens'][$i+1][1];
}
// $this->object->method()
else if (is_array($token) && $token[0] == T_OBJECT_OPERATOR &&
in_array($this->findVariableName($testMethod['tokens'], $i), $variables) &&
is_array($testMethod['tokens'][$i+2]) &&
$testMethod['tokens'][$i+2][0] == T_OBJECT_OPERATOR &&
is_array($testMethod['tokens'][$i+3]) &&
$testMethod['tokens'][$i+3][0] == T_STRING &&
$testMethod['tokens'][$i+4] == '(') {
$testedMethods[] = $testMethod['tokens'][$i+3][1];
}
// $object->method()
else if (is_array($token) && $token[0] == T_OBJECT_OPERATOR &&
in_array($this->findVariableName($testMethod['tokens'], $i), $variables) &&
is_array($testMethod['tokens'][$i+1]) &&
$testMethod['tokens'][$i+1][0] == T_STRING &&
$testMethod['tokens'][$i+2] == '(') {
$testedMethods[] = $testMethod['tokens'][$i+1][1];
}
}
}
$testedMethods = array_unique($testedMethods);
sort($testedMethods);
return $testedMethods;
}
/**
* Returns the variables used in test methods
* that reference the class under test.
*
* @param array $tokens
* @return array
*/
protected function findVariablesThatReferenceClass(array $tokens)
{
$inNew = FALSE;
$variables = array();
foreach ($tokens as $i => $token) {
if (is_string($token)) {
if (trim($token) == ';') {
$inNew = FALSE;
}
continue;
}
list ($token, $value) = $token;
switch ($token) {
case T_NEW: {
$inNew = TRUE;
}
break;
case T_STRING: {
if ($inNew) {
if ($value == $this->outClassName['fullyQualifiedClassName']) {
$variables[] = $this->findVariableName(
$tokens, $i
);
}
}
$inNew = FALSE;
}
break;
}
}
return $variables;
}
/**
* Finds the variable name of the object for the method call
* that is currently being processed.
*
* @param array $tokens
* @param integer $start
* @return mixed
*/
protected function findVariableName(array $tokens, $start)
{
for ($i = $start - 1; $i >= 0; $i--) {
if (is_array($tokens[$i]) && $tokens[$i][0] == T_VARIABLE) {
$variable = $tokens[$i][1];
if (is_array($tokens[$i+1]) &&
$tokens[$i+1][0] == T_OBJECT_OPERATOR &&
$tokens[$i+2] != '(' &&
$tokens[$i+3] != '(') {
$variable .= '->' . $tokens[$i+2][1];
}
return $variable;
}
}
return FALSE;
}
/**
* @param string $filename
* @return array
*/
protected function getClassesInFile($filename)
{
$result = array();
$tokens = token_get_all(
file_get_contents($filename)
);
$numTokens = count($tokens);
$blocks = array();
$line = 1;
$currentBlock = FALSE;
$currentNamespace = FALSE;
$currentClass = FALSE;
$currentFunction = FALSE;
$currentFunctionStartLine = FALSE;
$currentFunctionTokens = array();
$currentDocComment = FALSE;
$currentSignature = FALSE;
$currentSignatureStartToken = FALSE;
for ($i = 0; $i < $numTokens; $i++) {
if ($currentFunction !== FALSE) {
$currentFunctionTokens[] = $tokens[$i];
}
if (is_string($tokens[$i])) {
if ($tokens[$i] == '{') {
if ($currentBlock == T_CLASS) {
$block = $currentClass;
}
else if ($currentBlock == T_FUNCTION) {
$currentSignature = '';
for ($j = $currentSignatureStartToken; $j < $i; $j++) {
if (is_string($tokens[$j])) {
$currentSignature .= $tokens[$j];
} else {
$currentSignature .= $tokens[$j][1];
}
}
$currentSignature = trim($currentSignature);
$block = $currentFunction;
$currentSignatureStartToken = FALSE;
}
else {
$block = FALSE;
}
array_push($blocks, $block);
$currentBlock = FALSE;
}
else if ($tokens[$i] == '}') {
$block = array_pop($blocks);
if ($block !== FALSE && $block !== NULL) {
if ($block == $currentFunction) {
if ($currentDocComment !== FALSE) {
$docComment = $currentDocComment;
$currentDocComment = FALSE;
} else {
$docComment = '';
}
$tmp = array(
'docComment' => $docComment,
'signature' => $currentSignature,
'startLine' => $currentFunctionStartLine,
'endLine' => $line,
'tokens' => $currentFunctionTokens
);
if ($currentClass !== FALSE) {
$result[$currentClass]['methods'][$currentFunction] = $tmp;
}
$currentFunction = FALSE;
$currentFunctionStartLine = FALSE;
$currentFunctionTokens = array();
$currentSignature = FALSE;
}
else if ($block == $currentClass) {
$result[$currentClass]['endLine'] = $line;
$currentClass = FALSE;
$currentClassStartLine = FALSE;
}
}
}
continue;
}
switch ($tokens[$i][0]) {
case T_HALT_COMPILER: {
return;
}
break;
case T_NAMESPACE: {
$currentNamespace = $tokens[$i+2][1];
for ($j = $i+3; $j < $numTokens; $j += 2) {
if ($tokens[$j][0] == T_NS_SEPARATOR) {
$currentNamespace .= '\\' . $tokens[$j+1][1];
} else {
break;
}
}
}
break;
case T_CURLY_OPEN: {
$currentBlock = T_CURLY_OPEN;
array_push($blocks, $currentBlock);
}
break;
case T_DOLLAR_OPEN_CURLY_BRACES: {
$currentBlock = T_DOLLAR_OPEN_CURLY_BRACES;
array_push($blocks, $currentBlock);
}
break;
case T_CLASS: {
$currentBlock = T_CLASS;
if ($currentNamespace === FALSE) {
$currentClass = $tokens[$i+2][1];
} else {
$currentClass = $currentNamespace . '\\' .
$tokens[$i+2][1];
}
if ($currentDocComment !== FALSE) {
$docComment = $currentDocComment;
$currentDocComment = FALSE;
} else {
$docComment = '';
}
$result[$currentClass] = array(
'methods' => array(),
'docComment' => $docComment,
'startLine' => $line
);
}
break;
case T_FUNCTION: {
if (!((is_array($tokens[$i+2]) &&
$tokens[$i+2][0] == T_STRING) ||
(is_string($tokens[$i+2]) &&
$tokens[$i+2] == '&' &&
is_array($tokens[$i+3]) &&
$tokens[$i+3][0] == T_STRING))) {
continue;
}
$currentBlock = T_FUNCTION;
$currentFunctionStartLine = $line;
$done = FALSE;
$currentSignatureStartToken = $i - 1;
do {
switch ($tokens[$currentSignatureStartToken][0]) {
case T_ABSTRACT:
case T_FINAL:
case T_PRIVATE:
case T_PUBLIC:
case T_PROTECTED:
case T_STATIC:
case T_WHITESPACE: {
$currentSignatureStartToken--;
}
break;
default: {
$currentSignatureStartToken++;
$done = TRUE;
}
}
} while (!$done);
if (isset($tokens[$i+2][1])) {
$functionName = $tokens[$i+2][1];
}
else if (isset($tokens[$i+3][1])) {
$functionName = $tokens[$i+3][1];
}
if ($currentNamespace === FALSE) {
$currentFunction = $functionName;
} else {
$currentFunction = $currentNamespace . '\\' .
$functionName;
}
}
break;
case T_DOC_COMMENT: {
$currentDocComment = $tokens[$i][1];
}
break;
}
$line += substr_count($tokens[$i][1], "\n");
}
return $result;
}
}
}
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