src/Illuminate/View/Compilers/BladeCompiler.php
<?php
namespace Illuminate\View\Compilers;
use Illuminate\Container\Container;
use Illuminate\Contracts\Support\Htmlable;
use Illuminate\Contracts\View\Factory as ViewFactory;
use Illuminate\Contracts\View\View;
use Illuminate\Support\Arr;
use Illuminate\Support\Str;
use Illuminate\Support\Traits\ReflectsClosures;
use Illuminate\View\Component;
use InvalidArgumentException;
class BladeCompiler extends Compiler implements CompilerInterface
{
use Concerns\CompilesAuthorizations,
Concerns\CompilesClasses,
Concerns\CompilesComments,
Concerns\CompilesComponents,
Concerns\CompilesConditionals,
Concerns\CompilesEchos,
Concerns\CompilesErrors,
Concerns\CompilesFragments,
Concerns\CompilesHelpers,
Concerns\CompilesIncludes,
Concerns\CompilesInjections,
Concerns\CompilesJson,
Concerns\CompilesJs,
Concerns\CompilesLayouts,
Concerns\CompilesLoops,
Concerns\CompilesRawPhp,
Concerns\CompilesSessions,
Concerns\CompilesStacks,
Concerns\CompilesStyles,
Concerns\CompilesTranslations,
Concerns\CompilesUseStatements,
ReflectsClosures;
/**
* All of the registered extensions.
*
* @var array
*/
protected $extensions = [];
/**
* All custom "directive" handlers.
*
* @var array
*/
protected $customDirectives = [];
/**
* All custom "condition" handlers.
*
* @var array
*/
protected $conditions = [];
/**
* The registered string preparation callbacks.
*
* @var array
*/
protected $prepareStringsForCompilationUsing = [];
/**
* All of the registered precompilers.
*
* @var array
*/
protected $precompilers = [];
/**
* The file currently being compiled.
*
* @var string
*/
protected $path;
/**
* All of the available compiler functions.
*
* @var string[]
*/
protected $compilers = [
// 'Comments',
'Extensions',
'Statements',
'Echos',
];
/**
* Array of opening and closing tags for raw echos.
*
* @var string[]
*/
protected $rawTags = ['{!!', '!!}'];
/**
* Array of opening and closing tags for regular echos.
*
* @var string[]
*/
protected $contentTags = ['{{', '}}'];
/**
* Array of opening and closing tags for escaped echos.
*
* @var string[]
*/
protected $escapedTags = ['{{{', '}}}'];
/**
* The "regular" / legacy echo string format.
*
* @var string
*/
protected $echoFormat = 'e(%s)';
/**
* Array of footer lines to be added to the template.
*
* @var array
*/
protected $footer = [];
/**
* Array to temporarily store the raw blocks found in the template.
*
* @var array
*/
protected $rawBlocks = [];
/**
* The array of anonymous component paths to search for components in.
*
* @var array
*/
protected $anonymousComponentPaths = [];
/**
* The array of anonymous component namespaces to autoload from.
*
* @var array
*/
protected $anonymousComponentNamespaces = [];
/**
* The array of class component aliases and their class names.
*
* @var array
*/
protected $classComponentAliases = [];
/**
* The array of class component namespaces to autoload from.
*
* @var array
*/
protected $classComponentNamespaces = [];
/**
* Indicates if component tags should be compiled.
*
* @var bool
*/
protected $compilesComponentTags = true;
/**
* Compile the view at the given path.
*
* @param string|null $path
* @return void
*/
public function compile($path = null)
{
if ($path) {
$this->setPath($path);
}
if (! is_null($this->cachePath)) {
$contents = $this->compileString($this->files->get($this->getPath()));
if (! empty($this->getPath())) {
$contents = $this->appendFilePath($contents);
}
$this->ensureCompiledDirectoryExists(
$compiledPath = $this->getCompiledPath($this->getPath())
);
$this->files->put($compiledPath, $contents);
}
}
/**
* Append the file path to the compiled string.
*
* @param string $contents
* @return string
*/
protected function appendFilePath($contents)
{
$tokens = $this->getOpenAndClosingPhpTokens($contents);
if ($tokens->isNotEmpty() && $tokens->last() !== T_CLOSE_TAG) {
$contents .= ' ?>';
}
return $contents."<?php /**PATH {$this->getPath()} ENDPATH**/ ?>";
}
/**
* Get the open and closing PHP tag tokens from the given string.
*
* @param string $contents
* @return \Illuminate\Support\Collection
*/
protected function getOpenAndClosingPhpTokens($contents)
{
return collect(token_get_all($contents))
->pluck(0)
->filter(function ($token) {
return in_array($token, [T_OPEN_TAG, T_OPEN_TAG_WITH_ECHO, T_CLOSE_TAG]);
});
}
/**
* Get the path currently being compiled.
*
* @return string
*/
public function getPath()
{
return $this->path;
}
/**
* Set the path currently being compiled.
*
* @param string $path
* @return void
*/
public function setPath($path)
{
$this->path = $path;
}
/**
* Compile the given Blade template contents.
*
* @param string $value
* @return string
*/
public function compileString($value)
{
[$this->footer, $result] = [[], ''];
foreach ($this->prepareStringsForCompilationUsing as $callback) {
$value = $callback($value);
}
$value = $this->storeUncompiledBlocks($value);
// First we will compile the Blade component tags. This is a precompile style
// step which compiles the component Blade tags into @component directives
// that may be used by Blade. Then we should call any other precompilers.
$value = $this->compileComponentTags(
$this->compileComments($value)
);
foreach ($this->precompilers as $precompiler) {
$value = $precompiler($value);
}
// Here we will loop through all of the tokens returned by the Zend lexer and
// parse each one into the corresponding valid PHP. We will then have this
// template as the correctly rendered PHP that can be rendered natively.
foreach (token_get_all($value) as $token) {
$result .= is_array($token) ? $this->parseToken($token) : $token;
}
if (! empty($this->rawBlocks)) {
$result = $this->restoreRawContent($result);
}
// If there are any footer lines that need to get added to a template we will
// add them here at the end of the template. This gets used mainly for the
// template inheritance via the extends keyword that should be appended.
if (count($this->footer) > 0) {
$result = $this->addFooters($result);
}
if (! empty($this->echoHandlers)) {
$result = $this->addBladeCompilerVariable($result);
}
return str_replace(
['##BEGIN-COMPONENT-CLASS##', '##END-COMPONENT-CLASS##'],
'',
$result);
}
/**
* Evaluate and render a Blade string to HTML.
*
* @param string $string
* @param array $data
* @param bool $deleteCachedView
* @return string
*/
public static function render($string, $data = [], $deleteCachedView = false)
{
$component = new class($string) extends Component
{
protected $template;
public function __construct($template)
{
$this->template = $template;
}
public function render()
{
return $this->template;
}
};
$view = Container::getInstance()
->make(ViewFactory::class)
->make($component->resolveView(), $data);
return tap($view->render(), function () use ($view, $deleteCachedView) {
if ($deleteCachedView) {
@unlink($view->getPath());
}
});
}
/**
* Render a component instance to HTML.
*
* @param \Illuminate\View\Component $component
* @return string
*/
public static function renderComponent(Component $component)
{
$data = $component->data();
$view = value($component->resolveView(), $data);
if ($view instanceof View) {
return $view->with($data)->render();
} elseif ($view instanceof Htmlable) {
return $view->toHtml();
} else {
return Container::getInstance()
->make(ViewFactory::class)
->make($view, $data)
->render();
}
}
/**
* Store the blocks that do not receive compilation.
*
* @param string $value
* @return string
*/
protected function storeUncompiledBlocks($value)
{
if (str_contains($value, '@verbatim')) {
$value = $this->storeVerbatimBlocks($value);
}
if (str_contains($value, '@php')) {
$value = $this->storePhpBlocks($value);
}
return $value;
}
/**
* Store the verbatim blocks and replace them with a temporary placeholder.
*
* @param string $value
* @return string
*/
protected function storeVerbatimBlocks($value)
{
return preg_replace_callback('/(?<!@)@verbatim(\s*)(.*?)@endverbatim/s', function ($matches) {
return $matches[1].$this->storeRawBlock($matches[2]);
}, $value);
}
/**
* Store the PHP blocks and replace them with a temporary placeholder.
*
* @param string $value
* @return string
*/
protected function storePhpBlocks($value)
{
return preg_replace_callback('/(?<!@)@php(.*?)@endphp/s', function ($matches) {
return $this->storeRawBlock("<?php{$matches[1]}?>");
}, $value);
}
/**
* Store a raw block and return a unique raw placeholder.
*
* @param string $value
* @return string
*/
protected function storeRawBlock($value)
{
return $this->getRawPlaceholder(
array_push($this->rawBlocks, $value) - 1
);
}
/**
* Compile the component tags.
*
* @param string $value
* @return string
*/
protected function compileComponentTags($value)
{
if (! $this->compilesComponentTags) {
return $value;
}
return (new ComponentTagCompiler(
$this->classComponentAliases, $this->classComponentNamespaces, $this
))->compile($value);
}
/**
* Replace the raw placeholders with the original code stored in the raw blocks.
*
* @param string $result
* @return string
*/
protected function restoreRawContent($result)
{
$result = preg_replace_callback('/'.$this->getRawPlaceholder('(\d+)').'/', function ($matches) {
return $this->rawBlocks[$matches[1]];
}, $result);
$this->rawBlocks = [];
return $result;
}
/**
* Get a placeholder to temporarily mark the position of raw blocks.
*
* @param int|string $replace
* @return string
*/
protected function getRawPlaceholder($replace)
{
return str_replace('#', $replace, '@__raw_block_#__@');
}
/**
* Add the stored footers onto the given content.
*
* @param string $result
* @return string
*/
protected function addFooters($result)
{
return ltrim($result, "\n")
."\n".implode("\n", array_reverse($this->footer));
}
/**
* Parse the tokens from the template.
*
* @param array $token
* @return string
*/
protected function parseToken($token)
{
[$id, $content] = $token;
if ($id == T_INLINE_HTML) {
foreach ($this->compilers as $type) {
$content = $this->{"compile{$type}"}($content);
}
}
return $content;
}
/**
* Execute the user defined extensions.
*
* @param string $value
* @return string
*/
protected function compileExtensions($value)
{
foreach ($this->extensions as $compiler) {
$value = $compiler($value, $this);
}
return $value;
}
/**
* Compile Blade statements that start with "@".
*
* @param string $template
* @return string
*/
protected function compileStatements($template)
{
preg_match_all('/\B@(@?\w+(?:::\w+)?)([ \t]*)(\( ( [\S\s]*? ) \))?/x', $template, $matches);
$offset = 0;
for ($i = 0; isset($matches[0][$i]); $i++) {
$match = [
$matches[0][$i],
$matches[1][$i],
$matches[2][$i],
$matches[3][$i] ?: null,
$matches[4][$i] ?: null,
];
// Here we check to see if we have properly found the closing parenthesis by
// regex pattern or not, and will recursively continue on to the next ")"
// then check again until the tokenizer confirms we find the right one.
while (isset($match[4]) &&
Str::endsWith($match[0], ')') &&
! $this->hasEvenNumberOfParentheses($match[0])) {
if (($after = Str::after($template, $match[0])) === $template) {
break;
}
$rest = Str::before($after, ')');
if (isset($matches[0][$i + 1]) && Str::contains($rest.')', $matches[0][$i + 1])) {
unset($matches[0][$i + 1]);
$i++;
}
$match[0] = $match[0].$rest.')';
$match[3] = $match[3].$rest.')';
$match[4] = $match[4].$rest;
}
[$template, $offset] = $this->replaceFirstStatement(
$match[0],
$this->compileStatement($match),
$template,
$offset
);
}
return $template;
}
/**
* Replace the first match for a statement compilation operation.
*
* @param string $search
* @param string $replace
* @param string $subject
* @param int $offset
* @return array
*/
protected function replaceFirstStatement($search, $replace, $subject, $offset)
{
$search = (string) $search;
if ($search === '') {
return $subject;
}
$position = strpos($subject, $search, $offset);
if ($position !== false) {
return [
substr_replace($subject, $replace, $position, strlen($search)),
$position + strlen($replace),
];
}
return [$subject, 0];
}
/**
* Determine if the given expression has the same number of opening and closing parentheses.
*
* @param string $expression
* @return bool
*/
protected function hasEvenNumberOfParentheses(string $expression)
{
$tokens = token_get_all('<?php '.$expression);
if (Arr::last($tokens) !== ')') {
return false;
}
$opening = 0;
$closing = 0;
foreach ($tokens as $token) {
if ($token == ')') {
$closing++;
} elseif ($token == '(') {
$opening++;
}
}
return $opening === $closing;
}
/**
* Compile a single Blade @ statement.
*
* @param array $match
* @return string
*/
protected function compileStatement($match)
{
if (str_contains($match[1], '@')) {
$match[0] = isset($match[3]) ? $match[1].$match[3] : $match[1];
} elseif (isset($this->customDirectives[$match[1]])) {
$match[0] = $this->callCustomDirective($match[1], Arr::get($match, 3));
} elseif (method_exists($this, $method = 'compile'.ucfirst($match[1]))) {
$match[0] = $this->$method(Arr::get($match, 3));
} else {
return $match[0];
}
return isset($match[3]) ? $match[0] : $match[0].$match[2];
}
/**
* Call the given directive with the given value.
*
* @param string $name
* @param string|null $value
* @return string
*/
protected function callCustomDirective($name, $value)
{
$value ??= '';
if (str_starts_with($value, '(') && str_ends_with($value, ')')) {
$value = Str::substr($value, 1, -1);
}
return call_user_func($this->customDirectives[$name], trim($value));
}
/**
* Strip the parentheses from the given expression.
*
* @param string $expression
* @return string
*/
public function stripParentheses($expression)
{
if (Str::startsWith($expression, '(')) {
$expression = substr($expression, 1, -1);
}
return $expression;
}
/**
* Register a custom Blade compiler.
*
* @param callable $compiler
* @return void
*/
public function extend(callable $compiler)
{
$this->extensions[] = $compiler;
}
/**
* Get the extensions used by the compiler.
*
* @return array
*/
public function getExtensions()
{
return $this->extensions;
}
/**
* Register an "if" statement directive.
*
* @param string $name
* @param callable $callback
* @return void
*/
public function if($name, callable $callback)
{
$this->conditions[$name] = $callback;
$this->directive($name, function ($expression) use ($name) {
return $expression !== ''
? "<?php if (\Illuminate\Support\Facades\Blade::check('{$name}', {$expression})): ?>"
: "<?php if (\Illuminate\Support\Facades\Blade::check('{$name}')): ?>";
});
$this->directive('unless'.$name, function ($expression) use ($name) {
return $expression !== ''
? "<?php if (! \Illuminate\Support\Facades\Blade::check('{$name}', {$expression})): ?>"
: "<?php if (! \Illuminate\Support\Facades\Blade::check('{$name}')): ?>";
});
$this->directive('else'.$name, function ($expression) use ($name) {
return $expression !== ''
? "<?php elseif (\Illuminate\Support\Facades\Blade::check('{$name}', {$expression})): ?>"
: "<?php elseif (\Illuminate\Support\Facades\Blade::check('{$name}')): ?>";
});
$this->directive('end'.$name, function () {
return '<?php endif; ?>';
});
}
/**
* Check the result of a condition.
*
* @param string $name
* @param mixed ...$parameters
* @return bool
*/
public function check($name, ...$parameters)
{
return call_user_func($this->conditions[$name], ...$parameters);
}
/**
* Register a class-based component alias directive.
*
* @param string $class
* @param string|null $alias
* @param string $prefix
* @return void
*/
public function component($class, $alias = null, $prefix = '')
{
if (! is_null($alias) && str_contains($alias, '\\')) {
[$class, $alias] = [$alias, $class];
}
if (is_null($alias)) {
$alias = str_contains($class, '\\View\\Components\\')
? collect(explode('\\', Str::after($class, '\\View\\Components\\')))->map(function ($segment) {
return Str::kebab($segment);
})->implode(':')
: Str::kebab(class_basename($class));
}
if (! empty($prefix)) {
$alias = $prefix.'-'.$alias;
}
$this->classComponentAliases[$alias] = $class;
}
/**
* Register an array of class-based components.
*
* @param array $components
* @param string $prefix
* @return void
*/
public function components(array $components, $prefix = '')
{
foreach ($components as $key => $value) {
if (is_numeric($key)) {
$this->component($value, null, $prefix);
} else {
$this->component($key, $value, $prefix);
}
}
}
/**
* Get the registered class component aliases.
*
* @return array
*/
public function getClassComponentAliases()
{
return $this->classComponentAliases;
}
/**
* Register a new anonymous component path.
*
* @param string $path
* @param string|null $prefix
* @return void
*/
public function anonymousComponentPath(string $path, ?string $prefix = null)
{
$prefixHash = md5($prefix ?: $path);
$this->anonymousComponentPaths[] = [
'path' => $path,
'prefix' => $prefix,
'prefixHash' => $prefixHash,
];
Container::getInstance()
->make(ViewFactory::class)
->addNamespace($prefixHash, $path);
}
/**
* Register an anonymous component namespace.
*
* @param string $directory
* @param string|null $prefix
* @return void
*/
public function anonymousComponentNamespace(string $directory, ?string $prefix = null)
{
$prefix ??= $directory;
$this->anonymousComponentNamespaces[$prefix] = Str::of($directory)
->replace('/', '.')
->trim('. ')
->toString();
}
/**
* Register a class-based component namespace.
*
* @param string $namespace
* @param string $prefix
* @return void
*/
public function componentNamespace($namespace, $prefix)
{
$this->classComponentNamespaces[$prefix] = $namespace;
}
/**
* Get the registered anonymous component paths.
*
* @return array
*/
public function getAnonymousComponentPaths()
{
return $this->anonymousComponentPaths;
}
/**
* Get the registered anonymous component namespaces.
*
* @return array
*/
public function getAnonymousComponentNamespaces()
{
return $this->anonymousComponentNamespaces;
}
/**
* Get the registered class component namespaces.
*
* @return array
*/
public function getClassComponentNamespaces()
{
return $this->classComponentNamespaces;
}
/**
* Register a component alias directive.
*
* @param string $path
* @param string|null $alias
* @return void
*/
public function aliasComponent($path, $alias = null)
{
$alias = $alias ?: Arr::last(explode('.', $path));
$this->directive($alias, function ($expression) use ($path) {
return $expression
? "<?php \$__env->startComponent('{$path}', {$expression}); ?>"
: "<?php \$__env->startComponent('{$path}'); ?>";
});
$this->directive('end'.$alias, function ($expression) {
return '<?php echo $__env->renderComponent(); ?>';
});
}
/**
* Register an include alias directive.
*
* @param string $path
* @param string|null $alias
* @return void
*/
public function include($path, $alias = null)
{
$this->aliasInclude($path, $alias);
}
/**
* Register an include alias directive.
*
* @param string $path
* @param string|null $alias
* @return void
*/
public function aliasInclude($path, $alias = null)
{
$alias = $alias ?: Arr::last(explode('.', $path));
$this->directive($alias, function ($expression) use ($path) {
$expression = $this->stripParentheses($expression) ?: '[]';
return "<?php echo \$__env->make('{$path}', {$expression}, \Illuminate\Support\Arr::except(get_defined_vars(), ['__data', '__path']))->render(); ?>";
});
}
/**
* Register a handler for custom directives.
*
* @param string $name
* @param callable $handler
* @return void
*
* @throws \InvalidArgumentException
*/
public function directive($name, callable $handler)
{
if (! preg_match('/^\w+(?:::\w+)?$/x', $name)) {
throw new InvalidArgumentException("The directive name [{$name}] is not valid. Directive names must only contain alphanumeric characters and underscores.");
}
$this->customDirectives[$name] = $handler;
}
/**
* Get the list of custom directives.
*
* @return array
*/
public function getCustomDirectives()
{
return $this->customDirectives;
}
/**
* Indicate that the following callable should be used to prepare strings for compilation.
*
* @param callable $callback
* @return $this
*/
public function prepareStringsForCompilationUsing(callable $callback)
{
$this->prepareStringsForCompilationUsing[] = $callback;
return $this;
}
/**
* Register a new precompiler.
*
* @param callable $precompiler
* @return void
*/
public function precompiler(callable $precompiler)
{
$this->precompilers[] = $precompiler;
}
/**
* Set the echo format to be used by the compiler.
*
* @param string $format
* @return void
*/
public function setEchoFormat($format)
{
$this->echoFormat = $format;
}
/**
* Set the "echo" format to double encode entities.
*
* @return void
*/
public function withDoubleEncoding()
{
$this->setEchoFormat('e(%s, true)');
}
/**
* Set the "echo" format to not double encode entities.
*
* @return void
*/
public function withoutDoubleEncoding()
{
$this->setEchoFormat('e(%s, false)');
}
/**
* Indicate that component tags should not be compiled.
*
* @return void
*/
public function withoutComponentTags()
{
$this->compilesComponentTags = false;
}
}