Package com.googlecode.prolog_cafe.lang

Examples of com.googlecode.prolog_cafe.lang.BufferingPrologControl

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  @Override
  public int run() {
    banner();

    BufferingPrologControl pcl = new BufferingPrologControl();
    pcl.setPrologClassLoader(new PrologClassLoader(getClass().getClassLoader()));
    pcl.setEnabled(EnumSet.allOf(Prolog.Feature.class), false);
    pcl.setEnabled(Prolog.Feature.IO, true);
    pcl.setEnabled(Prolog.Feature.STATISTICS_RUNTIME, true);

    pcl.initialize(Prolog.BUILTIN);
    pcl.execute(Prolog.BUILTIN, "set_prolog_flag",
        SymbolTerm.intern("print_stack_trace"),
        SymbolTerm.intern("on"));

    for (String file : fileName) {
      String path;
      try {
        path = new File(file).getCanonicalPath();
      } catch (IOException e) {
        path = new File(file).getAbsolutePath();
      }
      pcl.execute(Prolog.BUILTIN, "consult", SymbolTerm.create(path));
      System.err.println();
      System.err.flush();
    }

    try {
      pcl.execute(Prolog.BUILTIN, "cafeteria");
      write("% halt\n");
      return 0;
    } catch (HaltException halt) {
      write("% halt(" + halt.getStatus() + ")\n");
      return halt.getStatus();
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    }

    // Dynamically consult the rules into the machine's internal database.
    //
    String rules = read(project, rulesId);
    BufferingPrologControl ctl = newEmptyMachine(systemLoader);
    PushbackReader in = new PushbackReader(
        new StringReader(rules),
        Prolog.PUSHBACK_SIZE);

    if (!ctl.execute(
        Prolog.BUILTIN, "consult_stream",
        SymbolTerm.intern("rules.pl"),
        new JavaObjectTerm(in))) {
      throw new CompileException("Cannot consult rules of " + project);
    }
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      git.close();
    }
  }

  private static BufferingPrologControl newEmptyMachine(ClassLoader cl) {
    BufferingPrologControl ctl = new BufferingPrologControl();
    ctl.setMaxArity(PrologEnvironment.MAX_ARITY);
    ctl.setMaxDatabaseSize(DB_MAX);
    ctl.setPrologClassLoader(new PrologClassLoader(cl));
    ctl.setEnabled(EnumSet.allOf(Prolog.Feature.class), false);

    // Bootstrap the interpreter and ensure there is clean state.
    ctl.initialize(PACKAGE_LIST);
    return ctl;
  }
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    assertTrue("has tests", tests.size() > 0);
    machine = PrologMachineCopy.save(env);
  }

  private PrologMachineCopy newMachine() {
    BufferingPrologControl ctl = new BufferingPrologControl();
    ctl.setMaxDatabaseSize(16 * 1024);
    ctl.setPrologClassLoader(new PrologClassLoader(getClass().getClassLoader()));
    return PrologMachineCopy.save(ctl);
  }
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Related Classes of com.googlecode.prolog_cafe.lang.BufferingPrologControl

  • com.google.gerrit.pgm.PrologShell
  • com.google.gerrit.rules.PrologTestCase
  • com.google.gerrit.rules.RulesCache
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