moving the logic for each of the three parsed addresses out into their own function

helper/query_parser.js

@@ -5,43 +5,55 @@ var get_layers = require('../helper/layers');
 var delim      = ',';
 
 module.exports = function(query) {
-  var parsedAddress0 = {};
-  var parsedAddress1 = {};
-  var parsedAddress2 = {};
-
-  // naive approach
-  // for admin matching during query time
-  // split 'flatiron, new york, ny' into 'flatiron' and 'new york, ny'
-  var delimIndex = query.indexOf(delim);
-  if ( delimIndex !== -1 ) {
-    parsedAddress0.name = query.substring(0, delimIndex);
-    parsedAddress0.admin_parts = query.substring(delimIndex + 1).trim();
-  }
-
+  
   var tokenized = query.split(/[ ,]+/);
   var hasNumber = /\d/.test(query);
 
-  // set target_layer if input length <= 3 characters
-  if (query.length <= 3 ) {
-    // no address parsing required
-    parsedAddress2.target_layer = get_layers(['admin']);
-  } else if (tokenized.length === 1 || (tokenized.length < 3 && !hasNumber)) {
-    // no need to hit address layers if there's only one (or two) token(s)
-    parsedAddress2.target_layer = get_layers(['admin', 'poi']);
-  } else {
+  var getAdminPartsBySplittingOnDelim = function(query) {
+    // naive approach - for admin matching during query time
+    // split 'flatiron, new york, ny' into 'flatiron' and 'new york, ny'
+    var delimIndex = query.indexOf(delim);
+    var address = {};
+    if ( delimIndex !== -1 ) {
+      address.name = query.substring(0, delimIndex);
+      address.admin_parts = query.substring(delimIndex + 1).trim();
+    }  
+
+    return address;
+  };
+  
+  var getTargetLayersWhenAddressParsingIsNotNecessary = function(query) {
+    var address = {};
+    // set target_layer if input length <= 3 characters
+    if (query.length <= 3 ) {
+      // no address parsing required
+      address.target_layer = get_layers(['admin']);
+    } else if (tokenized.length === 1 || (tokenized.length < 3 && !hasNumber)) {
+      // no need to hit address layers if there's only one (or two) token(s)
+      address.target_layer = get_layers(['admin', 'poi']);
+    }
+    
+    return address.target_layer ? address : null;
+  };
+
+  var getAddressParts = function(query) {
     // address parsing
-    parsedAddress1 = parser( query );
+    var address = parser( query );
     // set target_layer if input suggests no address
-    if (parsedAddress1.text === parsedAddress1.regions.join(' ') && !hasNumber) {
-      parsedAddress2.target_layer = get_layers(['admin', 'poi']);
-    } // else {
-      // this might be an overkill - you'd want to search for poi and admin
-      // even if an address is being queried. TBD
-      // parsedAddress2.target_layer = get_layers(['address']);
-      // }
-  }
+    if (address.text === address.regions.join(' ') && !hasNumber) {
+      address.target_layer = get_layers(['admin', 'poi']);
+    }
+
+    return address;
+  };
+
+  var addressWithAdminParts  = getAdminPartsBySplittingOnDelim(query);
+  var addressWithTargetLayers= getTargetLayersWhenAddressParsingIsNotNecessary(query);
+  var addressWithAddressParts= !addressWithTargetLayers ? getAddressParts(query) : {}; 
 
-  var parsedAddress  = extend(parsedAddress0, parsedAddress1, parsedAddress2);
+  var parsedAddress  = extend(addressWithAdminParts, 
+                              addressWithTargetLayers, 
+                              addressWithAddressParts);
 
   var address_parts  =  [ 'name',
                           'number',