org.jruby.Ruby.getNil()方法的使用及代码示例

x33g5p2x  于2022-01-29 转载在 其他  
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本文整理了Java中org.jruby.Ruby.getNil方法的一些代码示例，展示了Ruby.getNil的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Ruby.getNil方法的具体详情如下：
包路径：org.jruby.Ruby
类名称：Ruby
方法名：getNil

Ruby.getNil介绍

[英]Returns the "nil" singleton instance.
[中]返回“nil”单例实例。

代码示例

代码示例来源：origin: bazelbuild/bazel

@JRubyMethod
public IRubyObject clear(ThreadContext context) {
  table.clear();
  return context.runtime.getNil();
}

代码示例来源：origin: bazelbuild/bazel

@JRubyMethod
public IRubyObject each(ThreadContext context, Block block) {
  Ruby runtime = context.runtime;
  for (Descriptors.EnumValueDescriptor enumValueDescriptor : descriptor.getValues()) {
    block.yield(context, runtime.newArray(runtime.newSymbol(enumValueDescriptor.getName()),
        runtime.newFixnum(enumValueDescriptor.getNumber())));
  }
  return runtime.getNil();
}

代码示例来源：origin: bazelbuild/bazel

switch (fieldType) {
  case INT32:
    return runtime.newFixnum((Integer) value);
  case INT64:
    return runtime.newFixnum((Long) value);
  case UINT32:
    return runtime.newFixnum(((Integer) value) & (-1l >>> 32));
  case UINT64:
    long ret = (Long) value;
    return runtime.getNil();

代码示例来源：origin: org.jruby/jruby-complete

@JRubyMethod(rest = true)
public static IRubyObject java_implements(IRubyObject recv, IRubyObject[] args) {
  // empty stub for now
  return recv.getRuntime().getNil();
}

代码示例来源：origin: bazelbuild/bazel

@JRubyMethod(name = "method_missing", rest = true)
public IRubyObject methodMissing(ThreadContext context, IRubyObject[] args) {
  if (args.length == 1) {
    RubyDescriptor rubyDescriptor = (RubyDescriptor) getDescriptor(context, metaClass);
    IRubyObject oneofDescriptor = rubyDescriptor.lookupOneof(context, args[0]);
    if (oneofDescriptor.isNil()) {
      if (!hasField(args[0])) {
        return Helpers.invokeSuper(context, this, metaClass, "method_missing", args, Block.NULL_BLOCK);
      }
      return index(context, args[0]);
    }
    RubyOneofDescriptor rubyOneofDescriptor = (RubyOneofDescriptor) oneofDescriptor;
    Descriptors.FieldDescriptor fieldDescriptor =
        oneofCases.get(rubyOneofDescriptor.getOneofDescriptor());
    if (fieldDescriptor == null)
      return context.runtime.getNil();
    return context.runtime.newSymbol(fieldDescriptor.getName());
  } else {
    // fieldName is RubySymbol
    RubyString field = args[0].asString();
    RubyString equalSign = context.runtime.newString(Utils.EQUAL_SIGN);
    if (field.end_with_p(context, equalSign).isTrue()) {
      field.chomp_bang(context, equalSign);
    }
    if (!hasField(field)) {
      return Helpers.invokeSuper(context, this, metaClass, "method_missing", args, Block.NULL_BLOCK);
    }
    return indexSet(context, field, args[1]);
  }
}

代码示例来源：origin: bazelbuild/bazel

@JRubyMethod(required = 4, optional = 1)
public IRubyObject map(ThreadContext context, IRubyObject[] args) {
  Ruby runtime = context.runtime;
  IRubyObject valueType = args[2];
  IRubyObject number = args[3];
  IRubyObject typeClass = args.length > 4 ? args[4] : context.runtime.getNil();
  keyField.setName(context, runtime.newString("key"));
  keyField.setLabel(context, RubySymbol.newSymbol(runtime, "optional"));
  keyField.setNumber(context, runtime.newFixnum(1));
  keyField.setType(context, keyType);
  mapentryDesc.addField(context, keyField);
  valueField.setName(context, runtime.newString("value"));
  valueField.setLabel(context, RubySymbol.newSymbol(runtime, "optional"));
  valueField.setNumber(context, runtime.newFixnum(2));
  valueField.setType(context, valueType);
  if (! typeClass.isNil()) valueField.setSubmsgName(context, typeClass);
  mapentryDesc.addField(context, valueField);
  return runtime.getNil();

代码示例来源：origin: org.jruby/jruby-complete

@Override
public IRubyObject get() {
  IRubyObject errorInfo = runtime.getGlobalVariables().get("$!");
  IRubyObject backtrace = errorInfo.isNil() ? runtime.getNil() : errorInfo.callMethod(errorInfo.getRuntime().getCurrentContext(), "backtrace");
  //$@ returns nil if $!.backtrace is not an array
  if (!(backtrace instanceof RubyArray)) {
    backtrace = runtime.getNil();
  }
  return backtrace;
}

代码示例来源：origin: bazelbuild/bazel

fields.remove(oneofCase);
    if (value.isNil()) {
      oneofCases.remove(oneofDescriptor);
      fields.remove(fieldDescriptor);
    if (fieldType == Descriptors.FieldDescriptor.Type.MESSAGE) {
      typeClass = ((RubyDescriptor) getDescriptorForField(context, fieldDescriptor)).msgclass(context);
      if (value.isNil()){
        addValue = false;
return context.runtime.getNil();

代码示例来源：origin: org.jruby/jruby-complete

@JRubyMethod(rest = true)
public static IRubyObject java_annotation(IRubyObject recv, IRubyObject[] args) {
  // empty stub for now
  return recv.getRuntime().getNil();
}

代码示例来源：origin: bazelbuild/bazel

@JRubyMethod(meta = true)
public static IRubyObject resolve(ThreadContext context, IRubyObject recv, IRubyObject name) {
  RubyEnumDescriptor rubyEnumDescriptorescriptor = (RubyEnumDescriptor) getDescriptor(context, recv);
  Descriptors.EnumDescriptor descriptor = rubyEnumDescriptorescriptor.getDescriptor();
  Descriptors.EnumValueDescriptor value = descriptor.findValueByName(name.asJavaString());
  if (value == null) return context.runtime.getNil();
  return context.runtime.newFixnum(value.getNumber());
}

代码示例来源：origin: bazelbuild/bazel

@JRubyMethod
public IRubyObject lookup(ThreadContext context, IRubyObject name) {
  IRubyObject descriptor = this.symtab.get(name);
  if (descriptor == null) {
    return context.runtime.getNil();
  }
  return descriptor;
}

代码示例来源：origin: com.ning.billing/killbill-osgi-bundles-jruby

@JRubyMethod(name = "strip!", compat = RUBY1_9)
public IRubyObject strip_bang19(ThreadContext context) {
  modifyCheck();
  
  IRubyObject left = lstrip_bang19(context);
  IRubyObject right = rstrip_bang19(context);
  
  return left.isNil() && right.isNil() ? context.runtime.getNil() : this;
}

代码示例来源：origin: org.jruby/jruby-core

@Override
public IRubyObject get() {
  IRubyObject errorInfo = runtime.getGlobalVariables().get("$!");
  IRubyObject backtrace = errorInfo.isNil() ? runtime.getNil() : errorInfo.callMethod(errorInfo.getRuntime().getCurrentContext(), "backtrace");
  //$@ returns nil if $!.backtrace is not an array
  if (!(backtrace instanceof RubyArray)) {
    backtrace = runtime.getNil();
  }
  return backtrace;
}

代码示例来源：origin: bazelbuild/bazel

private IRubyObject wrapField(ThreadContext context, Descriptors.FieldDescriptor fieldDescriptor, Object value) {
  if (value == null) {
    return context.runtime.getNil();
  }
  Ruby runtime = context.runtime;
  switch (fieldDescriptor.getType()) {
    case INT32:
    case INT64:
    case UINT32:
    case UINT64:
    case FLOAT:
    case DOUBLE:
    case BOOL:
    case BYTES:
    case STRING:
      return Utils.wrapPrimaryValue(context, fieldDescriptor.getType(), value);
    case MESSAGE:
      RubyClass typeClass = (RubyClass) ((RubyDescriptor) getDescriptorForField(context, fieldDescriptor)).msgclass(context);
      RubyMessage msg = (RubyMessage) typeClass.newInstance(context, Block.NULL_BLOCK);
      return msg.buildFrom(context, (DynamicMessage) value);
    case ENUM:
      Descriptors.EnumValueDescriptor enumValueDescriptor = (Descriptors.EnumValueDescriptor) value;
      if (enumValueDescriptor.getIndex() == -1) { // UNKNOWN ENUM VALUE
        return runtime.newFixnum(enumValueDescriptor.getNumber());
      }
      return runtime.newSymbol(enumValueDescriptor.getName());
    default:
      return runtime.newString(value.toString());
  }
}

代码示例来源：origin: org.jruby/jruby-complete

/** rb_reg_match_pre
 *
 */
public static IRubyObject match_pre(IRubyObject match) {
  if (match.isNil()) return match;
  RubyMatchData m = (RubyMatchData)match;
  m.check();
  Ruby runtime = m.getRuntime();
  if (m.begin == -1) return runtime.getNil();
  return m.str.makeShared(runtime, 0,  m.begin).infectBy(m);
}

代码示例来源：origin: org.jruby/jruby-complete

@JRubyMethod(rest = true)
public static IRubyObject java_require(IRubyObject recv, IRubyObject[] args) {
  // empty stub for now
  return recv.getRuntime().getNil();
}

代码示例来源：origin: org.kill-bill.billing/killbill-osgi-bundles-jruby

@JRubyMethod(name = "<=>", required = 1, compat = CompatVersion.RUBY1_8)
@Override
public IRubyObject op_cmp(ThreadContext context, IRubyObject other) {
  if (other instanceof RubyTime) {
    return context.runtime.newFixnum(cmp((RubyTime) other));
  }
  return context.runtime.getNil();
}

代码示例来源：origin: bazelbuild/bazel

@JRubyMethod(required = 3, optional = 1)
public IRubyObject optional(ThreadContext context, IRubyObject[] args) {
  Ruby runtime = context.runtime;
  IRubyObject typeClass = runtime.getNil();
  if (args.length > 3) typeClass = args[3];
  msgdefAddField(context, "optional", args[0], args[1], args[2], typeClass);
  return context.runtime.getNil();
}

代码示例来源：origin: org.jruby/jruby-complete

@JRubyMethod
public IRubyObject ungetbyte(IRubyObject b) {
  if (b.isNil()) return b;
  try {
    bufferedStream.unread(b.convertToInteger().getIntValue());
    position--;
  } catch (IOException ioe) {
    throw getRuntime().newIOErrorFromException(ioe);
  }
  return getRuntime().getNil();
}

代码示例来源：origin: com.ning.billing/killbill-osgi-bundles-jruby

@Override
public IRubyObject get() {
  IRubyObject errorInfo = runtime.getGlobalVariables().get("$!");
  IRubyObject backtrace = errorInfo.isNil() ? runtime.getNil() : errorInfo.callMethod(errorInfo.getRuntime().getCurrentContext(), "backtrace");
  //$@ returns nil if $!.backtrace is not an array
  if (!(backtrace instanceof RubyArray)) {
    backtrace = runtime.getNil();
  }
  return backtrace;
}

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