Refs #5121: remove functions we didn't previously use

lib/pipeline/documentSources/DocumentSource.js

@@ -218,75 +218,3 @@ proto.serializeToArray = function serializeToArray(array, explain) {
 		array.push(entry);
 	}
 };
-
-// Taken as a whole, these three functions should produce the same output document given the
-// same deps set as mongo::Projection::transform would on the output of depsToProjection. The
-// only exceptions are that we correctly handle the case where no fields are needed and we don't
-// need to work around the above mentioned bug with subfields of _id (SERVER-7502). This is
-// tested in a DEV block in DocumentSourceCursor::findNext().
-//
-// Output from this function is input for the next two
-//
-// ParsedDeps is a simple recursive look-up table. For each field in a ParsedDeps:
-//      If the value has type==Bool, the whole field is needed
-//      If the value has type==Object, the fields in the subobject are needed
-//      All other fields should be missing which means not needed
-// DocumentSource::ParsedDeps DocumentSource::parseDeps(const set<string>& deps) {
-//  MutableDocument md;
-klass.parseDeps = function parseDeps(deps) {
-	var doc,
-		last;
-
-	for (var i = 0; i < deps.length; i++) {
-		var it = deps[i];
-		if (!last && it.startsWith(last)) {
-			// we are including a parent of *it so we don't need to include this field
-			// explicitly. In fact, if we included this field, the parent wouldn't be fully
-			// included.  This logic relies on on set iterators going in lexicographic order so
-			// that a string is always directly before of all fields it prefixes.
-			continue;
-		}
-		last = it + '.';
-		Object.setAtPath(doc, it, true);
-	}
-
-	return doc;
-};
-
-klass.documentFromJsonWithDeps = function documentFromJsonWithDeps(obj, deps) {
-	var doc = {},
-		self = this;
-
-	var arrayHelper = function(field, isNeeded) {
-		return field.map(function(f) {
-			DocumentSource.documentFromJsonWithDeps(f, isNeeded);
-		});
-	};
-
-	for (var i = 0; i < obj.keys().length; i++) {
-		var fieldName = obj.keys()[i],
-			field = obj[fieldName],
-			isNeeded = deps[fieldName];
-
-		if (!isNeeded)
-			continue;
-
-		if (typeof isNeeded === Boolean) {
-			Object.setAtPath(doc, fieldName, field);
-			continue;
-		}
-
-		if (!(isNeeded instanceof Object))
-			throw new Error("dependencies missing for object");
-
-		if (field instanceof Array)
-			Object.setAtPath(doc, fieldName, arrayHelper(field, isNeeded));
-
-		if (field instanceof Object) { // everything is...
-			var sub = DocumentSource.documentFromJsonWithDeps(field, isNeeded);
-			Object.setAtPath(doc, fieldName, sub);
-		}
-	}
-
-	return doc;
-};