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- <?php namespace Laravel;
- class Blade {
- /**
- * All of the compiler functions used by Blade.
- *
- * @var array
- */
- protected static $compilers = array(
- 'echos',
- 'structure_openings',
- 'structure_closings',
- 'else',
- 'yields',
- 'section_start',
- 'section_end',
- );
- /**
- * Compiles the specified file containing Blade pseudo-code into valid PHP.
- *
- * @param string $path
- * @return string
- */
- public static function compile($path)
- {
- return static::compile_string(file_get_contents($path));
- }
- /**
- * Compiles the given string containing Blade pseudo-code into valid PHP.
- *
- * @param string $value
- * @return string
- */
- public static function compile_string($value)
- {
- foreach (static::$compilers as $compiler)
- {
- $method = "compile_{$compiler}";
- $value = static::$method($value);
- }
- return $value;
- }
- /**
- * Rewrites Blade echo statements into PHP echo statements.
- *
- * Blade echo statements are simply PHP statement enclosed within double curly
- * braces. For example, {{$content}} will simply echo out the content variable
- * to the output buffer.
- *
- * @param string $value
- * @return string
- */
- protected static function compile_echos($value)
- {
- return preg_replace('/\{\{(.+?)\}\}/', '<?php echo $1; ?>', $value);
- }
- /**
- * Rewrites Blade structure openings into PHP structure openings.
- *
- * By "structures", we mean the if, elseif, foreach, for, and while statements.
- * All of these structures essentially have the same format, and can be lumped
- * into a single regular expression.
- *
- * @param string $value
- * @return string
- */
- protected static function compile_structure_openings($value)
- {
- $pattern = '/(\s*)@(if|elseif|foreach|for|while)(\s*\(.*?\))/';
- return preg_replace($pattern, '$1<?php $2$3: ?>', $value);
- }
- /**
- * Rewrites Blade structure closings into PHP structure closings.
- *
- * @param string $value
- * @return string
- */
- protected static function compile_structure_closings($value)
- {
- $pattern = '/(\s*)@(endif|endforeach|endfor|endwhile)(\s*)/';
- return preg_replace($pattern, '$1<?php $2; ?>$3', $value);
- }
- /**
- * Rewrites Blade else statements into PHP else statements.
- *
- * @param string $value
- * @return string
- */
- protected static function compile_else($value)
- {
- return preg_replace('/(\s*)@(else)(\s*)/', '$1<?php $2: ?>$3', $value);
- }
- /**
- * Rewrites Blade @yield statements into Section statements.
- *
- * The Blade @yield statement is a shortcut to the Section::yield method.
- *
- * @param string $value
- * @return string
- */
- protected static function compile_yields($value)
- {
- $pattern = static::matcher('yield');
- return preg_replace($pattern, '$1<?php echo \\Laravel\\Section::yield$2; ?>', $value);
- }
- /**
- * Rewrites Blade @section statements into Section statements.
- *
- * The Blade @section statement is a shortcut to the Section::start method.
- *
- * @param string $value
- * @return string
- */
- protected static function compile_section_start($value)
- {
- $pattern = static::matcher('section');
- return preg_replace($pattern, '$1<?php \\Laravel\\Section::start$2; ?>', $value);
- }
- /**
- * Rewrites Blade @endsection statements into Section statements.
- *
- * The Blade @endsection statement is a shortcut to the Section::stop method.
- *
- * @param string $value
- * @return string
- */
- protected static function compile_section_end($value)
- {
- return preg_replace('/@endsection/', '<?php \\Laravel\\Section::stop(); ?>', $value);
- }
- /**
- * Get the regular expression for a generic Blade function.
- *
- * @param string $function
- * @return string
- */
- protected static function matcher($function)
- {
- return '/(\s*)@'.$function.'(\s*\(.*?\))/';
- }
- }
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