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[rails.git] / lib / diff_reader.rb

diff --git a/lib/diff_reader.rb b/lib/diff_reader.rb
index 4591430763358e9016a4ff3a6837229fe662d385..94c41a6d57751be96c3497fb99ffefb7d85e4229 100644 (file)
--- a/lib/diff_reader.rb
+++ b/lib/diff_reader.rb
@@ -11,7 +11,7 @@ class DiffReader
     "node"     => Node,
     "way"      => Way,
     "relation" => Relation
-  }
+  }.freeze
 
   ##
   # Construct a diff reader by giving it a bunch of XML +data+ to parse
@@ -57,7 +57,7 @@ class DiffReader
         # care of that for us.
         if @reader.node_type == 1 # element
           name = @reader.name
-          attributes =  {}
+          attributes = {}
 
           if @reader.has_attributes?
             while @reader.move_to_next_attribute == 1
@@ -85,8 +85,10 @@ class DiffReader
   def with_model
     with_element do |model_name, _model_attributes|
       model = MODELS[model_name]
-      fail OSM::APIBadUserInput.new("Unexpected element type #{model_name}, " +
-                                     "expected node, way or relation.") if model.nil?
+      if model.nil?
+        raise OSM::APIBadUserInput, "Unexpected element type #{model_name}, " \
+                                       "expected node, way or relation."
+      end
       # new in libxml-ruby >= 2, expand returns an element not associated
       # with a document. this means that there's no encoding parameter,
       # which means basically nothing works.
@@ -109,9 +111,9 @@ class DiffReader
   # Checks a few invariants. Others are checked in the model methods
   # such as save_ and delete_with_history.
   def check(model, xml, new)
-    fail OSM::APIBadXMLError.new(model, xml) if new.nil?
+    raise OSM::APIBadXMLError.new(model, xml) if new.nil?
     unless new.changeset_id == @changeset.id
-      fail OSM::APIChangesetMismatchError.new(new.changeset_id, @changeset.id)
+      raise OSM::APIChangesetMismatchError.new(new.changeset_id, @changeset.id)
     end
   end
 
@@ -128,7 +130,7 @@ class DiffReader
 
     # take the first element and check that it is an osmChange element
     @reader.read
-    fail OSM::APIBadUserInput.new("Document element should be 'osmChange'.") if @reader.name != "osmChange"
+    raise OSM::APIBadUserInput, "Document element should be 'osmChange'." if @reader.name != "osmChange"
 
     result = OSM::API.new.get_xml_doc
     result.root.name = "diffResult"
@@ -145,12 +147,12 @@ class DiffReader
           # when this element is saved it will get a new ID, so we save it
           # to produce the mapping which is sent to other elements.
           placeholder_id = xml["id"].to_i
-          fail OSM::APIBadXMLError.new(model, xml) if placeholder_id.nil?
+          raise OSM::APIBadXMLError.new(model, xml) if placeholder_id.nil?
 
           # check if the placeholder ID has been given before and throw
           # an exception if it has - we can't create the same element twice.
           model_sym = model.to_s.downcase.to_sym
-          fail OSM::APIBadUserInput.new("Placeholder IDs must be unique for created elements.") if ids[model_sym].include? placeholder_id
+          raise OSM::APIBadUserInput, "Placeholder IDs must be unique for created elements." if ids[model_sym].include? placeholder_id
 
           # some elements may have placeholders for other elements in the
           # diff, so we must fix these before saving the element.
@@ -209,7 +211,7 @@ class DiffReader
           # delete doesn't have to contain a full payload, according to
           # the wiki docs, so we just extract the things we need.
           new_id = xml["id"].to_i
-          fail OSM::APIBadXMLError.new(model, xml, "ID attribute is required") if new_id.nil?
+          raise OSM::APIBadXMLError.new(model, xml, "ID attribute is required") if new_id.nil?
 
           # if the ID is a placeholder then map it to the real ID
           model_sym = model.to_s.downcase.to_sym
@@ -250,7 +252,7 @@ class DiffReader
 
       else
         # no other actions to choose from, so it must be the users fault!
-        fail OSM::APIChangesetActionInvalid.new(action_name)
+        raise OSM::APIChangesetActionInvalid, action_name
       end
     end