* @since 2.0
*/
abstract class Generator extends Model
{
public $templates = array();
/**
* @var string the name of the code template that the user has selected.
* The value of this property is internally managed by this class and {@link CCodeGenerator}.
*/
public $template;
/**
* @return string name of the code generator
*/
abstract public function getName();
public function init()
{
parent::init();
if (!isset($this->templates['default'])) {
$this->templates['default'] = $this->getDefaultTemplate();
}
}
/**
* Prepares the code files to be generated.
* This is the main method that child classes should implement. It should contain the logic
* that populates the {@link files} property with a list of code files to be generated.
*/
public function prepare()
{
return array();
}
/**
* Returns a list of code templates that are required.
* Derived classes usually should override this method.
* @return array list of code templates that are required. They should be file paths
* relative to {@link templatePath}.
*/
public function requiredTemplates()
{
return array();
}
public function getViewFile()
{
$class = new ReflectionClass($this);
return dirname($class->getFileName()) . '/views/form.php';
}
public function getDefaultTemplate()
{
$class = new ReflectionClass($this);
return dirname($class->getFileName()) . '/templates';
}
public function getDescription()
{
return '';
}
/**
* Declares the model validation rules.
* Child classes must override this method in the following format:
*
* return array_merge(parent::rules(), array(
* ...rules for the child class...
* ));
*
* @return array validation rules
*/
public function rules()
{
return array(
array('template', 'required', 'message' => 'A code template must be selected.'),
array('template', 'validateTemplate', 'skipOnError' => true),
);
}
/**
* Checks if the named class exists (in a case sensitive manner).
* @param string $name class name to be checked
* @return boolean whether the class exists
*/
public function classExists($name)
{
return class_exists($name, false) && in_array($name, get_declared_classes());
}
/**
* Saves the generated code into files.
*/
public function save($files, $answers = array())
{
$result = true;
foreach ($files as $file) {
if ($this->confirmed($file)) {
$result = $file->save() && $result;
}
}
return $result;
}
/**
* @return string the directory that contains the template files.
* @throws InvalidConfigException if {@link templates} is empty or template selection is invalid
*/
public function getTemplatePath()
{
if (isset($this->templates[$this->template])) {
return $this->templates[$this->template];
} else {
throw new InvalidConfigException("Unknown template: {$this->template}");
}
}
/**
* @param CodeFile $file whether the code file should be saved
* @return bool whether the confirmation is found in {@link answers} with appropriate {@link operation}
*/
public function confirmed($file)
{
return $this->answers === null && $file->operation === CodeFile::OP_NEW
|| is_array($this->answers) && isset($this->answers[md5($file->path)]);
}
/**
* Generates the code using the specified code template file.
* This method is manly used in {@link generate} to generate code.
* @param string $templateFile the code template file path
* @param array $_params_ a set of parameters to be extracted and made available in the code template
* @return string the generated code
*/
public function render($templateFile, $params = array())
{
$view = new View;
return $view->renderFile($templateFile, $params, $this);
}
/**
* @return string the code generation result log.
*/
public function renderResults()
{
$output = 'Generating code using template "' . $this->templatePath . "\"...\n";
foreach ($this->files as $file) {
if ($file->error !== null) {
$output .= "generating {$file->relativePath}
{$file->error}\n";
} elseif ($file->operation === CodeFile::OP_NEW && $this->confirmed($file)) {
$output .= ' generated ' . $file->relativePath . "\n";
} elseif ($file->operation === CodeFile::OP_OVERWRITE && $this->confirmed($file)) {
$output .= ' overwrote ' . $file->relativePath . "\n";
} else {
$output .= ' skipped ' . $file->relativePath . "\n";
}
}
$output .= "done!\n";
return $output;
}
/**
* Validates the template selection.
* This method validates whether the user selects an existing template
* and the template contains all required template files as specified in {@link requiredTemplates}.
*/
public function validateTemplate()
{
$templates = $this->templates;
if (!isset($templates[$this->template])) {
$this->addError('template', 'Invalid template selection.');
} else {
$templatePath = $this->templates[$this->template];
foreach ($this->requiredTemplates() as $template) {
if (!is_file($templatePath . '/' . $template)) {
$this->addError('template', "Unable to find the required code template file '$template'.");
}
}
}
}
/**
* Validates an attribute to make sure it is not taking a PHP reserved keyword.
* @param string $attribute the attribute to be validated
* @param array $params validation parameters
*/
public function validateReservedWord($attribute, $params)
{
static $keywords = array(
'__class__',
'__dir__',
'__file__',
'__function__',
'__line__',
'__method__',
'__namespace__',
'abstract',
'and',
'array',
'as',
'break',
'case',
'catch',
'cfunction',
'class',
'clone',
'const',
'continue',
'declare',
'default',
'die',
'do',
'echo',
'else',
'elseif',
'empty',
'enddeclare',
'endfor',
'endforeach',
'endif',
'endswitch',
'endwhile',
'eval',
'exception',
'exit',
'extends',
'final',
'final',
'for',
'foreach',
'function',
'global',
'goto',
'if',
'implements',
'include',
'include_once',
'instanceof',
'interface',
'isset',
'list',
'namespace',
'new',
'old_function',
'or',
'parent',
'php_user_filter',
'print',
'private',
'protected',
'public',
'require',
'require_once',
'return',
'static',
'switch',
'this',
'throw',
'try',
'unset',
'use',
'var',
'while',
'xor',
);
$value = $this->$attribute;
if (in_array(strtolower($value), $keywords)) {
$this->addError($attribute, $this->getAttributeLabel($attribute) . ' cannot take a reserved PHP keyword.');
}
}
}