VariableNameSniff.php in Coder 8.3.x

Namespace

DrupalPractice\Sniffs\General

File

coder_sniffer/DrupalPractice/Sniffs/General/VariableNameSniff.php

<?php

/**
 * \DrupalPractice\Sniffs\General\VariableNameSniff
 *
 * @category PHP
 * @package  PHP_CodeSniffer
 * @link     http://pear.php.net/package/PHP_CodeSniffer
 */
namespace DrupalPractice\Sniffs\General;

use PHP_CodeSniffer\Files\File;
use Drupal\Sniffs\Semantics\FunctionCall;
use DrupalPractice\Project;
use PHP_CodeSniffer\Util\Tokens;

/**
 * Checks the usage of variable_get() in forms and the variable name.
 *
 * @category PHP
 * @package  PHP_CodeSniffer
 * @link     http://pear.php.net/package/PHP_CodeSniffer
 */
class VariableNameSniff extends FunctionCall {

  /**
   * Returns an array of function names this test wants to listen for.
   *
   * @return array<string>
   */
  public function registerFunctionNames() {
    return [
      'variable_get',
    ];
  }

  //end registerFunctionNames()

  /**
   * Processes this function call.
   *
   * @param \PHP_CodeSniffer\Files\File $phpcsFile    The file being scanned.
   * @param int                         $stackPtr     The position of the function call in
   *                                                  the stack.
   * @param int                         $openBracket  The position of the opening
   *                                                  parenthesis in the stack.
   * @param int                         $closeBracket The position of the closing
   *                                                  parenthesis in the stack.
   *
   * @return void
   */
  public function processFunctionCall(File $phpcsFile, $stackPtr, $openBracket, $closeBracket) {
    $tokens = $phpcsFile
      ->getTokens();

    // We assume that the sequence '#default_value' => variable_get(...)
    // indicates a variable that the module owns.
    $arrow = $phpcsFile
      ->findPrevious(Tokens::$emptyTokens, $stackPtr - 1, null, true);
    if ($arrow === false || $tokens[$arrow]['code'] !== T_DOUBLE_ARROW) {
      return;
    }
    $arrayKey = $phpcsFile
      ->findPrevious(Tokens::$emptyTokens, $arrow - 1, null, true);
    if ($arrayKey === false || $tokens[$arrayKey]['code'] !== T_CONSTANT_ENCAPSED_STRING || substr($tokens[$arrayKey]['content'], 1, -1) !== '#default_value') {
      return;
    }
    $argument = $this
      ->getArgument(1);

    // Variable name is not a literal string, so we return early.
    if ($argument === false || $tokens[$argument['start']]['code'] !== T_CONSTANT_ENCAPSED_STRING) {
      return;
    }
    $moduleName = Project::getName($phpcsFile);
    if ($moduleName === false) {
      return;
    }
    $variableName = substr($tokens[$argument['start']]['content'], 1, -1);
    if (strpos($variableName, $moduleName) !== 0) {
      $warning = 'All variables defined by your module must be prefixed with your module\'s name to avoid name collisions with others. Expected start with "%s" but found "%s"';
      $data = [
        $moduleName,
        $variableName,
      ];
      $phpcsFile
        ->addWarning($warning, $argument['start'], 'VariableName', $data);
    }
  }

}

//end class

Classes

Name	Description
VariableNameSniff	Checks the usage of variable_get() in forms and the variable name.