Fix DataTable's Location to be aware of all of its lines

lib/cucumber/core/gherkin/ast_builder.rb

@@ -373,6 +373,12 @@ def result
           def rows
             attributes[:rows] = attributes[:rows].map { |r| r[:cells].map { |c| c[:value] } }
           end
+
+          def location
+            first_line = attributes[:location][:line]
+            last_line = first_line + attributes[:rows].length - 1
+            Ast::Location.new(file, first_line..last_line)
+          end
         end
 
         class DocStringBuilder < Builder

spec/cucumber/core/test/filters/locations_filter_spec.rb

@@ -96,6 +96,8 @@ module Cucumber::Core
                 Given a table
                   | a | b |
                   | 1 | 2 |
+                  | 3 | 4 |
+
           END
         end
 
@@ -192,10 +194,25 @@ def test_case_named(name)
             test_cases.find { |c| c.name == 'with a table' }
           end
 
-          it "matches a location on the first table row" do
+          it "matches a location at the start of the table" do
             location = Ast::Location.new(file, 23)
             expect( test_case.match_locations?([location]) ).to be_truthy
           end
+
+          it "matches a location in the middle of the table" do
+            location = Ast::Location.new(file, 24)
+            expect( test_case.match_locations?([location]) ).to be_truthy
+          end
+
+          it "matches a location at the end of the table" do
+            location = Ast::Location.new(file, 25)
+            expect( test_case.match_locations?([location]) ).to be_truthy
+          end
+
+          it "does not match a location after the table" do
+            location = Ast::Location.new(file, 26)
+            expect( test_case.match_locations?([location]) ).to be_falsey
+          end
         end
 
         context "with duplicate locations in the filter" do