示例#1
0
 public static void work(BufferedReader ir) {
   TestParser testParser = new TestParser();
   try {
     PushbackReader r = new PushbackReader(ir, 1024);
     Parser parser = new Parser(new Lexer(r));
     Node syntaxTree = parser.parse();
     syntaxTree.apply(testParser);
   } catch (LexerException e) {
     System.out.println(e.getMessage() + ".");
   } catch (ParserException e) {
     System.out.println(e.getMessage() + ".");
   } catch (IOException e) {
     System.out.println(e.getMessage() + ".");
     System.exit(1);
   }
 }
  @Test
  public void shouldHaveNoCycles() {
    Graph<String> graph = new Graph<>();
    packageDependencies.forEach(
        (key, set) -> {
          Node<String> node = graph.findOrCreateNode(key);
          set.stream()
              .filter(packageDependencies::containsKey)
              .forEach(target -> node.linkedTo(graph.findOrCreateNode(target)));
        });

    graph.topologicalSort();

    System.out.println("----------------------- dependencies:");
    System.out.println(graph.toString());
    System.out.println("-----------------------");
  }