Class: Babeltrace2::BTValue

Inherits:
BTSharedObject show all
Defined in:
lib/babeltrace2/value.rb,
lib/babeltrace2/value.rb,
lib/babeltrace2/value.rb,
lib/babeltrace2/value.rb,
lib/babeltrace2/value.rb,
lib/babeltrace2/value.rb

Direct Known Subclasses

Array, Bool, Integer, Map, Null, Real, String

Defined Under Namespace

Classes: Array, Bool, Integer, Map, Null, Real, String

Constant Summary collapse

TYPE_MAP = 
{}
IntegerUnsigned = 
BTValue::Integer::Unsigned
IntegerSigned = 
BTValue::Integer::Signed
StringSetStatus = 
BTValueStringSetStatus
ArrayAppendElementStatus = 
BTValueArrayAppendElementStatus
ArraySetElementByIndexStatus = 
BTValueArraySetElementByIndexStatus
MapForeachEntryFuncStatus = 
BTValueMapForeachEntryFuncStatus
MapForeachEntryStatus = 
BTValueMapForeachEntryStatus
MapForeachEntryConstFuncStatus = 
BTValueMapForeachEntryConstFuncStatus
MapForeachEntryConstStatus = 
BTValueMapForeachEntryConstStatus
MapExtendStatus = 
BTValueMapExtendStatus

Instance Attribute Summary

Attributes inherited from BTObject

#handle

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from BTSharedObject

inherited, #initialize

Methods inherited from BTObject

#initialize, #to_ptr

Constructor Details

This class inherits a constructor from Babeltrace2::BTSharedObject

Class Method Details

.from_handle(handle, retain: true, auto_release: true) ⇒ Object 



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# File 'lib/babeltrace2/value.rb', line 62

def self.from_handle(handle, retain: true, auto_release: true)
  type = Babeltrace2.bt_value_get_type(handle)
  if type == :BT_VALUE_TYPE_NULL
    return BTValueNull.instance
  else
    clss = TYPE_MAP[type]
    raise "unsupported value type" unless clss
    handle = clss[0].new(handle)
    clss[1].new(handle, retain: retain, auto_release: auto_release)
  end
end

.from_value(value) ⇒ Object 



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# File 'lib/babeltrace2/value.rb', line 74

def self.from_value(value)
  case value
  when BTValue
    value
  when nil
    return BTValueNull.instance
  when false
    Bool.new(value: false)
  when true
    Bool.new(value: true)
  when ::Integer
    if value > (1<<63) - 1
      BTValueIntegerUnsigned.new(value: value)
    else
      BTValueIntegerSigned.new(value: value)
    end
  when ::Float
    BTValueReal.new(value: value)
  when ::String
    BTValueString.new(value: value)
  when ::Array
    arr = BTValueArray.new
    value.each { |v|
      arr.push(v)
    }
    arr
  when ::Hash
    map = BTValueMap.new
    value.each { |k, v|
      map.insert_entry(k, v)
    }
    map
  else
    raise TypeError, "unsupported value type"
  end
end

Instance Method Details

#copy ⇒ Object 



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# File 'lib/babeltrace2/value.rb', line 115

def copy
  ptr = FFI::MemoryPointer.new(:pointer)
  res = Babeltrace2.bt_value_copy(@handle, ptr)
  raise Babeltrace2.process_error(res) if res != :BT_VALUE_COPY_STATUS_OK
  BTValue.from_handle(BTValueHandle.new(ptr.read_pointer), retain: false)
end

#get_type ⇒ Object Also known as: type 



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# File 'lib/babeltrace2/value.rb', line 57

def get_type
  Babeltrace2.bt_value_get_type(@handle)
end

#is_equal(other) ⇒ Object Also known as: == 



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# File 'lib/babeltrace2/value.rb', line 122

def is_equal(other)
  other = BTValue.from_value(other)
  Babeltrace2.bt_value_is_equal(@handle, other) != BT_FALSE
end

#to_s ⇒ Object 



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# File 'lib/babeltrace2/value.rb', line 111

def to_s
  value.to_s
end