Fixes #33

README.md

@@ -62,6 +62,9 @@ Functions/methods must not return `null`.
 ### Codor.Classes.ClassLength ###
 Classes must be 200 lines of code or fewer.
 
+### Codor.Files.FunctionNameContainsAndOr ###
+Functions/methods cannot contain "And" or "Or". This could be a sign of a function that does more than one thing.
+
 ## Contributing ##
 Please see [CONTRIBUTING.md](CONTRIBUTING.md)
 

src/Codor/Sniffs/Files/FunctionNameContainsAndOrSniff.php

@@ -0,0 +1,83 @@
+<?php
+
+namespace Codor\Sniffs\Files;
+
+use PHP_CodeSniffer_Sniff;
+use PHP_CodeSniffer_File;
+
+class FunctionNameContainsAndOrSniff implements PHP_CodeSniffer_Sniff
+{
+
+    /**
+     * The forbidden strings this sniff looks for.
+     * @var array
+     */
+    protected $keywords = ['And', '_and', 'Or', '_or'];
+
+    /**
+     * Returns the token types that this sniff is interested in.
+     * @return array
+     */
+    public function register()
+    {
+        return [T_FUNCTION];
+    }
+
+    /**
+     * Processes the tokens that this sniff is interested in.
+     *
+     * @param PHP_CodeSniffer_File $phpcsFile The file where the token was found.
+     * @param integer              $stackPtr  The position in the stack where
+     *                                    the token was found.
+     * @return void
+     */
+    public function process(PHP_CodeSniffer_File $phpcsFile, $stackPtr)
+    {
+        $tokens = $phpcsFile->getTokens();
+        $functionNameToken = $tokens[$stackPtr + 2];
+        $functionName = $functionNameToken['content'];
+
+        if (! $this->containsKeywords($functionName)) {
+            return;
+        }
+
+        $phpcsFile->addError($this->getErrorMessage(), $stackPtr);
+    }
+
+    /**
+     * Determines if the provided $string contains any of the
+     * strings in the $this->keywords property.
+     * @param  string $string The string to check.
+     * @return boolean
+     */
+    protected function containsKeywords($string)
+    {
+        foreach ($this->keywords as $keyword) {
+            if ($this->contains($keyword, $string)) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    /**
+     * Checks if the $haystack contains the $needle.
+     * @param  string $needle   Needle string.
+     * @param  string $haystack Haystack string.
+     * @return boolean
+     */
+    protected function contains($needle, $haystack)
+    {
+        return strpos($haystack, $needle) !== false;
+    }
+
+    /**
+     * Gets the error message for this sniff.
+     * @return string
+     */
+    protected function getErrorMessage()
+    {
+        return "Your function contains 'and' or 'or' which indicates it might be doing more than one thing.";
+    }
+}

tests/Sniffs/Files/Assets/FunctionNameContainsAndOrSnuff/FunctionNameContainsAndOrSniff.inc

@@ -0,0 +1,46 @@
+<?php
+
+// This looks like it has the word
+// "and" but it's part of another word
+function expand()
+{
+
+}
+
+// This looks like it has the word
+// "or" but it's part of another word
+function orbit()
+{
+
+}
+
+function thisDoesThisAndThat($foo)
+{
+
+	return "This and that";
+}
+
+function thisDoesThisOrThat($foo)
+{
+	return "This or that";
+}
+
+function this_and_that()
+{
+
+}
+
+function that_And_This()
+{
+
+}
+
+function this_or_that()
+{
+
+}
+
+function that_Or_This()
+{
+
+}

tests/Sniffs/Files/FunctionNameContainsAndOrSniffTest.php

@@ -0,0 +1,28 @@
+<?php
+
+namespace Codor\Tests\Sniffs\ControlStructures;
+
+use Codor\Tests\BaseTestCase;
+
+/** @group Files */
+class FunctionNameContainsAndOrSniffTest extends BaseTestCase
+{
+
+    /**
+     * Sets up the test class.
+     * @return void
+     */
+    public function setup()
+    {
+        parent::setup();
+
+        $this->runner->setSniff('Codor.Files.FunctionNameContainsAndOr')->setFolder(__DIR__.'/Assets/FunctionNameContainsAndOrSnuff/');
+    }
+
+    /** @test */
+    public function it_detects_functions_that_are_over_the_max_allowed()
+    {
+        $results = $this->runner->sniff('FunctionNameContainsAndOrSniff.inc');
+        $this->assertSame(6, $results->getErrorCount());
+    }
+}