Class: Babeltrace2::BTFieldClass::Enumeration::Signed

Inherits:

Integer::Signed

• Object
• Integer::Signed
• Babeltrace2::BTFieldClass::Enumeration::Signed

Includes:

Babeltrace2::BTFieldClass::Enumeration

Defined in:

lib/babeltrace2/trace-ir/field-class.rb

Defined Under Namespace

Classes: Mapping

Constant Summary

Constants included from Babeltrace2::BTFieldClass::Enumeration

AddMappingStatus, GetMappingLabelsForValueStatus

Class Method Summary

• .from_h(trace_class, h, stream_class_h = nil) ⇒ Object

Instance Method Summary

• #add_mapping(label, ranges) ⇒ Object
• #get_mapping_by_index(index) ⇒ Object
• #get_mapping_by_label(label) ⇒ Object
• #get_mapping_labels_for_value(value) ⇒ Object (also: #mapping_labels_for_value)
• #initialize(handle = nil, retain: true, auto_release: true, trace_class: nil) ⇒ Signed constructor

  A new instance of Signed.

Methods included from Babeltrace2::BTFieldClass::Enumeration

#from_h, #get_mapping, #get_mapping_count, #to_h

Constructor Details

#initialize(handle = nil, retain: true, auto_release: true, trace_class: nil) ⇒ Signed

Returns a new instance of Signed.

# File 'lib/babeltrace2/trace-ir/field-class.rb', line 712

def initialize(handle = nil, retain: true, auto_release: true,
               trace_class: nil)
  if handle
    super(handle, retain: retain, auto_release: auto_release)
  else
    handle = Babeltrace2.bt_field_class_enumeration_signed_create(trace_class)
    raise Babeltrace2.process_error if handle.null?
    super(handle, retain: false)
  end
end

Class Method Details

.from_h(trace_class, h, stream_class_h = nil) ⇒ Object

# File 'lib/babeltrace2/trace-ir/field-class.rb', line 723

def self.from_h(trace_class, h, stream_class_h = nil)
  o = self.new(trace_class: trace_class).from_h(h)
  h[:bt_field_class] = o
  o
end

Instance Method Details

#add_mapping(label, ranges) ⇒ Object

# File 'lib/babeltrace2/trace-ir/field-class.rb', line 729

def add_mapping(label, ranges)
  label = label.inspect if label.kind_of?(Symbol)
  ranges = BTIntegerRangeSetSigned.from_value(ranges)
  res = Babeltrace2.bt_field_class_enumeration_signed_add_mapping(
          @handle, label, ranges)
  raise Babeltrace2.process_error(res) if res != :BT_FIELD_CLASS_ENUMERATION_ADD_MAPPING_STATUS_OK
  self
end

#get_mapping_by_index(index) ⇒ Object

# File 'lib/babeltrace2/trace-ir/field-class.rb', line 738

def get_mapping_by_index(index)
  count = get_mapping_count
  index += count if index < 0
  return nil if index >= count || index < 0
  handle =
    Babeltrace2.bt_field_class_enumeration_signed_borrow_mapping_by_index_const(
      @handle, index)
  BTFieldClassEnumerationSignedMapping.new(handle)
end

#get_mapping_by_label(label) ⇒ Object

# File 'lib/babeltrace2/trace-ir/field-class.rb', line 748

def get_mapping_by_label(label)
  label = label.inspect if label.kind_of?(Symbol)
  handle =
    Babeltrace2.bt_field_class_enumeration_signed_borrow_mapping_by_label_const(
      @handle, label)
  BTFieldClassEnumerationSignedMapping.new(handle)
end

#get_mapping_labels_for_value(value) ⇒ Object Also known as: mapping_labels_for_value

# File 'lib/babeltrace2/trace-ir/field-class.rb', line 756

def get_mapping_labels_for_value(value)
  ptr1 = FFI::MemoryPointer.new(:pointer)
  ptr2 = FFI::MemoryPointer.new(:uint64)
  res = Babeltrace2.bt_field_class_enumeration_signed_get_mapping_labels_for_value(
          @handle, value, ptr1, ptr2)
  raise Babeltrace2.process_error(res) if res != :BT_FIELD_CLASS_ENUMERATION_GET_MAPPING_LABELS_BY_VALUE_STATUS_OK
  count = ptr2.read_uint64
  return [] if count == 0
  ptr1 = ptr1.read_pointer
  ptr1.read_array_of_pointer(count).collect.collect { |v|
    v = v.read_string
    v[0] == ':' ? v[1..-1].to_sym : v
  }
end