Add support for braceless do-while loops in Javascript.

Author: pfrenssen

CodeSniffer/Standards/Generic/Sniffs/ControlStructures/InlineControlStructureSniff.php

@@ -106,6 +106,21 @@ public function process(PHP_CodeSniffer_File $phpcsFile, $stackPtr)
                     }
                 }
             }
+
+            // In Javascript DO WHILE loops without curly braces are legal. This
+            // is only valid if a single statement is present between the DO and
+            // the WHILE. We can detect this by checking only a single semicolon
+            // is present between them.
+            if ($phpcsFile->tokenizerType === 'JS') {
+                $lastDo = $phpcsFile->findPrevious(T_DO, $stackPtr - 1);
+                $lastSemicolon = $phpcsFile->findPrevious(T_SEMICOLON, $stackPtr - 1);
+                if ($lastDo !== false && $lastSemicolon !== false && $lastDo < $lastSemicolon) {
+                    $precedingSemicolon = $phpcsFile->findPrevious(T_SEMICOLON, $lastSemicolon - 1);
+                    if ($precedingSemicolon === false || $precedingSemicolon < $lastDo) {
+                        return;
+                    }
+                }
+            }
         }
 
         // This is a control structure without an opening brace,

CodeSniffer/Standards/Generic/Tests/ControlStructures/InlineControlStructureUnitTest.js

@@ -17,3 +17,5 @@ while (something) print 'hello';
 do {
     i--;
 } while (something);
+
+do i++; while (i < 5);

CodeSniffer/Standards/Generic/Tests/ControlStructures/InlineControlStructureUnitTest.js.fixed

@@ -17,3 +17,5 @@ while (something) { print 'hello'; }
 do {
     i--;
 } while (something);
+
+do { i++; } while (i < 5);

CodeSniffer/Standards/Generic/Tests/ControlStructures/InlineControlStructureUnitTest.php

@@ -71,6 +71,7 @@ public function getErrorList($testFile='InlineControlStructureUnitTest.inc')
                     11 => 1,
                     13 => 1,
                     15 => 1,
+                    21 => 1,
                    );
             break;
         default: