Clean up is-under-scope.js

Author: MadLittleMods

lib/is-under-scope.js

@@ -16,15 +16,13 @@ function getScopeMatchResults(nodeScopeList, scopeNodeScopeList) {
 
 			currentPieceOffset = null;
 			var wasEveryPieceFound = true;
-			// scopeNodeScopePieces.every(function(scopePiece) {
 			for(scopePieceIndex = 0; scopePieceIndex < scopeNodeScopePieces.length; scopePieceIndex++) {
 				var scopePiece = scopeNodeScopePieces[scopePieceIndex];
 				var pieceOffset = currentPieceOffset || 0;
 
 				var foundIndex = -1;
 				// Look through the remaining pieces(start from the offset)
 				var piecesWeCanMatch = nodeScopePieces.slice(pieceOffset);
-				//piecesWeCanMatch.some(function(nodeScopePiece, index) {
 				for(var nodeScopePieceIndex = 0; nodeScopePieceIndex < piecesWeCanMatch.length; nodeScopePieceIndex++) {
 					var nodeScopePiece = piecesWeCanMatch[nodeScopePieceIndex];
 					var overallIndex = pieceOffset + nodeScopePieceIndex;
@@ -55,9 +53,11 @@ function getScopeMatchResults(nodeScopeList, scopeNodeScopeList) {
 
 					// Handle any direct descendant operators in each piece
 					var directDescendantPieces = generateDirectDescendantPiecesFromSelector(nodeScopePiece);
+					// Only try to work out direct descendants if there was the `>` combinator, meaning multiple pieces
 					if(directDescendantPieces.length > 1) {
 
 						var ddNodeScopeList = [].concat([directDescendantPieces]);
+						// Massage into a direct descendant separated list
 						var ddScopeList = [].concat([
 							scopeNodeScopePieces
 								.slice(scopePieceIndex)
@@ -71,24 +71,21 @@ function getScopeMatchResults(nodeScopeList, scopeNodeScopeList) {
 						// or there are still more pieces to match in the future
 						if(result.doesMatchScope || scopePieceIndex+1 < scopeNodeScopePieces.length) {
 							foundIndex = overallIndex;
-							// -1 because the fo loop increments at the top
+							// Move the scope forward the amount that piece consumed
+							// -1 because the of for-loop increments at each iteration
 							scopePieceIndex += result.scopePieceIndex-1;
 						}
 
 						break;
 					}
-
-					if(directDescendantPieces.length > 1) {
-						var asdf = scopeNodeScopePieces.slice(scopePieceIndex);
-
-					}
 				}
 
 
 				var isFurther = foundIndex >= pieceOffset;
 
 				currentPieceOffset = foundIndex+1;
 
+				// Mimicing a `[].every` with a for-loop
 				wasEveryPieceFound = wasEveryPieceFound && isFurther;
 				if(!wasEveryPieceFound) {
 					break;