Use MutliJson for parsing, allows adapter to be set in options, or the best available used automtaictally. Fixes #18.

Author: gkellogg

json-ld.gemspec

@@ -28,7 +28,10 @@ Gem::Specification.new do |gem|
   gem.required_ruby_version = '>= 1.9.2'
   gem.requirements          = []
   gem.add_runtime_dependency     'rdf',             '~> 1.1', '>= 1.1.7'
+  gem.add_runtime_dependency     'multi_json',      '~> 1.11'
   gem.add_development_dependency 'jsonlint',        '~> 0.1.0' unless RUBY_ENGINE == "jruby"
+  gem.add_development_dependency 'oj',              '~> 2.12'
+  gem.add_development_dependency 'yajl-ruby',       '~> 1.2.1'
   gem.add_development_dependency "rack-cache",      '~> 1.2'
   gem.add_development_dependency "rest-client",     '~> 1.8'
   gem.add_development_dependency "rest-client-components", '~> 1.4'
@@ -37,7 +40,7 @@ Gem::Specification.new do |gem|
   gem.add_development_dependency 'rdf-trig',        '~> 1.1'
   gem.add_development_dependency 'rdf-turtle',      '~> 1.1'
   gem.add_development_dependency 'rdf-xsd',         '~> 1.1'
-  gem.add_development_dependency 'rspec',           '~> 3.0'
+  gem.add_development_dependency 'rspec',           '~> 3.2.0'
   gem.add_development_dependency 'rspec-its',       '~> 1.0'
   gem.add_development_dependency 'yard' ,           '~> 0.8'
 

lib/json/ld.rb

@@ -1,5 +1,6 @@
 $:.unshift(File.expand_path(File.join(File.dirname(__FILE__), '..')))
 require 'rdf' # @see http://rubygems.org/gems/rdf
+require 'multi_json'
 
 module JSON
   ##

lib/json/ld/api.rb

@@ -81,6 +81,7 @@ class API
     #   Use unique bnode identifiers, defaults to using the identifier which the node was originall initialized with (if any).
     # @option options [Boolean]  :simple_compact_iris   (false)
     #   When compacting IRIs, do not use terms with expanded term definitions
+    # @option options [Symbol] :adapter used with MultiJson
     # @option options [Boolean] :validate Validate input, if a string or readable object.
     # @yield [api]
     # @yieldparam [API]
@@ -108,7 +109,7 @@ def initialize(input, context, options = {}, &block)
 
         validate_input(input) if options[:validate]
 
-        JSON.parse(input.read)
+        MultiJson.load(input.read, options)
       when String
         remote_doc = @options[:documentLoader].call(input, @options)
 
@@ -118,7 +119,7 @@ def initialize(input, context, options = {}, &block)
         case remote_doc.document
         when String
           validate_input(remote_doc.document) if options[:validate]
-          JSON.parse(remote_doc.document)
+          MultiJson.load(remote_doc.document, options)
         else
           remote_doc.document
         end
@@ -332,11 +333,11 @@ def self.frame(input, frame, options = {})
       # de-reference frame to create the framing object
       frame = case frame
       when Hash then frame.dup
-      when IO, StringIO then JSON.parse(frame.read)
+      when IO, StringIO then MultiJson.load(frame.read)
       when String
         remote_doc = options[:documentLoader].call(frame)
         case remote_doc.document
-        when String then JSON.parse(remote_doc.document)
+        when String then MultiJson.load(remote_doc.document)
         else remote_doc.document
         end
       end

lib/json/ld/context.rb

@@ -297,7 +297,7 @@ def parse(local_context, remote_contexts = [])
               @options[:documentLoader].call(context.to_s, context_opts) do |remote_doc|
                 # 3.2.5) Dereference context. If the dereferenced document has no top-level JSON object with an @context member, an invalid remote context has been detected and processing is aborted; otherwise, set context to the value of that member.
                 jo = case remote_doc.document
-                when String then JSON.parse(remote_doc.document)
+                when String then MultiJson.load(remote_doc.document)
                 else remote_doc.document
                 end
                 raise JsonLdError::InvalidRemoteContext, "#{context}" unless jo.is_a?(Hash) && jo.has_key?('@context')
@@ -306,6 +306,9 @@ def parse(local_context, remote_contexts = [])
                   context_no_base.provided_context = context.dup
                 end
               end
+            rescue JsonLdError::LoadingDocumentFailed => e
+              debug("parse") {"Failed to retrieve @context from remote document at #{context_no_base.context_base.inspect}: #{e.message}"}
+              raise JsonLdError::LoadingRemoteContextFailed, "#{context_no_base.context_base}", e.backtrace
             rescue JsonLdError
               raise
             rescue Exception => e

spec/api_spec.rb

@@ -65,36 +65,40 @@
   end
 
   context "Test Files" do
-    Dir.glob(File.expand_path(File.join(File.dirname(__FILE__), 'test-files/*-input.*'))) do |filename|
-      test = File.basename(filename).sub(/-input\..*$/, '')
-      frame = filename.sub(/-input\..*$/, '-frame.json')
-      framed = filename.sub(/-input\..*$/, '-framed.json')
-      compacted = filename.sub(/-input\..*$/, '-compacted.json')
-      context = filename.sub(/-input\..*$/, '-context.json')
-      expanded = filename.sub(/-input\..*$/, '-expanded.json')
-      ttl = filename.sub(/-input\..*$/, '-rdf.ttl')
+    %w(oj json_gem ok_json yajl).map(&:to_sym).each do |adapter|
+      context "with MultiJson adapter #{adapter.inspect}" do
+        Dir.glob(File.expand_path(File.join(File.dirname(__FILE__), 'test-files/*-input.*'))) do |filename|
+          test = File.basename(filename).sub(/-input\..*$/, '')
+          frame = filename.sub(/-input\..*$/, '-frame.json')
+          framed = filename.sub(/-input\..*$/, '-framed.json')
+          compacted = filename.sub(/-input\..*$/, '-compacted.json')
+          context = filename.sub(/-input\..*$/, '-context.json')
+          expanded = filename.sub(/-input\..*$/, '-expanded.json')
+          ttl = filename.sub(/-input\..*$/, '-rdf.ttl')
 
-      context test do
-        it "expands" do
-          options = {debug: @debug}
-          options[:expandContext] = File.open(context) if context
-          jld = described_class.expand(File.open(filename), options)
-          expect(jld).to produce(JSON.load(File.open(expanded)), @debug)
-        end if File.exist?(expanded)
+          context test do
+            it "expands" do
+              options = {debug: @debug, adapter: adapter}
+              options[:expandContext] = File.open(context) if context
+              jld = described_class.expand(File.open(filename), options)
+              expect(jld).to produce(JSON.load(File.open(expanded)), @debug)
+            end if File.exist?(expanded)
 
-        it "compacts" do
-          jld = described_class.compact(File.open(filename), File.open(context), debug: @debug)
-          expect(jld).to produce(JSON.load(File.open(compacted)), @debug)
-        end if File.exist?(compacted) && File.exist?(context)
+            it "compacts" do
+              jld = described_class.compact(File.open(filename), File.open(context), adapter: adapter, debug: @debug)
+              expect(jld).to produce(JSON.load(File.open(compacted)), @debug)
+            end if File.exist?(compacted) && File.exist?(context)
 
-        it "frame" do
-          jld = described_class.frame(File.open(filename), File.open(frame), debug: @debug)
-          expect(jld).to produce(JSON.load(File.open(framed)), @debug)
-        end if File.exist?(framed) && File.exist?(frame)
+            it "frame" do
+              jld = described_class.frame(File.open(filename), File.open(frame), adapter: adapter, debug: @debug)
+              expect(jld).to produce(JSON.load(File.open(framed)), @debug)
+            end if File.exist?(framed) && File.exist?(frame)
 
-        it "toRdf" do
-          expect(RDF::Repository.load(filename, debug: @debug)).to be_equivalent_graph(RDF::Repository.load(ttl), trace: @debug)
-        end if File.exist?(ttl)
+            it "toRdf" do
+              expect(RDF::Repository.load(filename, adapter: adapter, debug: @debug)).to be_equivalent_graph(RDF::Repository.load(ttl), trace: @debug)
+            end if File.exist?(ttl)
+          end
+        end
       end
     end
   end