Introducing coding standards validation.

vendor/wp-coding-standards/wpcs/WordPress/Sniffs/Functions/FunctionCallSignatureNoParamsSniff.php

@@ -0,0 +1,91 @@
+<?php
+/**
+ * WordPress Coding Standard.
+ *
+ * @package WPCS\WordPressCodingStandards
+ * @link    https://github.com/WordPress-Coding-Standards/WordPress-Coding-Standards
+ * @license https://opensource.org/licenses/MIT MIT
+ */
+
+namespace WordPress\Sniffs\Functions;
+
+use WordPress\Sniff;
+use PHP_CodeSniffer_Tokens as Tokens;
+
+/**
+ * Enforces no whitespace between the parenthesis of a function call without parameters.
+ *
+ * @link    https://make.wordpress.org/core/handbook/best-practices/coding-standards/php/#space-usage
+ *
+ * @package WPCS\WordPressCodingStandards
+ *
+ * @since   0.12.0
+ * @since   0.13.0 Class name changed: this class is now namespaced.
+ */
+class FunctionCallSignatureNoParamsSniff extends Sniff {
+
+	/**
+	 * Returns an array of tokens this test wants to listen for.
+	 *
+	 * @return array
+	 */
+	public function register() {
+		return Tokens::$functionNameTokens;
+	}
+
+	/**
+	 * Processes this test, when one of its tokens is encountered.
+	 *
+	 * @param int $stackPtr The position of the current token in the stack.
+	 *
+	 * @return int Integer stack pointer to skip the rest of the file.
+	 */
+	public function process_token( $stackPtr ) {
+
+		// Find the next non-empty token.
+		$openParenthesis = $this->phpcsFile->findNext( Tokens::$emptyTokens, ( $stackPtr + 1 ), null, true );
+
+		if ( \T_OPEN_PARENTHESIS !== $this->tokens[ $openParenthesis ]['code'] ) {
+			// Not a function call.
+			return;
+		}
+
+		if ( ! isset( $this->tokens[ $openParenthesis ]['parenthesis_closer'] ) ) {
+			// Not a function call.
+			return;
+		}
+
+		// Find the previous non-empty token.
+		$search   = Tokens::$emptyTokens;
+		$search[] = \T_BITWISE_AND;
+		$previous = $this->phpcsFile->findPrevious( $search, ( $stackPtr - 1 ), null, true );
+		if ( \T_FUNCTION === $this->tokens[ $previous ]['code'] ) {
+			// It's a function definition, not a function call.
+			return;
+		}
+
+		$closer = $this->tokens[ $openParenthesis ]['parenthesis_closer'];
+
+		if ( ( $closer - 1 ) === $openParenthesis ) {
+			return;
+		}
+
+		$nextNonWhitespace = $this->phpcsFile->findNext( \T_WHITESPACE, ( $openParenthesis + 1 ), null, true );
+
+		if ( $nextNonWhitespace !== $closer ) {
+			// Function has params or comment between parenthesis.
+			return;
+		}
+
+		$fix = $this->phpcsFile->addFixableError(
+			'Function calls without parameters should have no spaces between the parenthesis.',
+			( $openParenthesis + 1 ),
+			'WhitespaceFound'
+		);
+		if ( true === $fix ) {
+			// If there is only whitespace between the parenthesis, it will just be the one token.
+			$this->phpcsFile->fixer->replaceToken( ( $openParenthesis + 1 ), '' );
+		}
+	}
+
+}