PFL Base Classes

Wednesday, 21 October 2026 13:47 UTC

This is a hierarchical list of the classes provided by the PFL base library.

PFL_Obj

The top level abstract class. Contains the object's type and reference count.
- PFL_Container
  
  An abstract general-purpose container.
  - PFL_List
    
    An abstract List providing functions common to all lists, such as get_size()
    - PFL_Array
      
      An automatically resizable array of objects.
      - PFL_RC_Ctx
        
        A list of PFL_RC_Log items acting as a stack trace.
      - PFL_Rec
        
        A representation of a serialisable object state.
    - PFL_Link_List
      
      A doubly linked list, stack or queue.
  - PFL_Map
    
    A hash map.
    - PFL_Link_Map
      
      An ordered hash map.
  - PFL_Map_Entry
    
    A key / value entry in a hash map.
    - PFL_Link_Map_Entry
      
      A key / value entry in an ordered hash map.
- PFL_Key
  
  An abstract class for objects which can be used as keys in a hash map.
  - PFL_Bool
    
    An abstract class representing a boolean. Subclassed by PFL_True and PFL_False.
    - PFL_True
      
      A single instance object representing a boolean True value. Hashes to 2. PFL_TRUE_INST.
    - PFL_False
      
      A single instance object representing a boolean False value. Hashes to 1. PFL_FALSE_INST.
  - PFL_Null
    
    A single instance object representing a null value. Hashes to 0. PFL_NULL_INST.
  - PFL_Str
    
    A UTF8 String class.
  - PFL_Numeric
    
    An abstract numeric class.
    - PFL_Int8
      
      An 8-bit integer.
    - PFL_Int32
      
      A 32-bit integer.
    - PFL_Int64
      
      A 64-bit integer.
      - PFL_Time
        
        Time in milliseconds since 1970-01-01 GMT.
    - PFL_Float
      
      A double sized floating point value.
    - PFL_Dec
      
      A decimal numeric value.
- PFL_Chr
  
  A unicode character encoder / decoder for UTF8 encodings.
  - PFL_Chr16be
    
    A unicode character encoder / decoder for UTF16 Big Endian encodings.
  - PFL_Chr16le
    
    A unicode character encoder / decoder for UTF16 Little Endian encodings.
  - PFL_Chr32be
    
    A unicode character encoder / decoder for UTF32 Big Endian encodings.
  - PFL_Chr32le
    
    A unicode character encoder / decoder for UTF32 Little Endian encodings.
- PFL_Stream
  
  An abstract file-like data stream.
  - PFL_File
    
    A file class.
- PFL_RC_Log
  
  A representation of an error or exceptional condition encountered during processing.
- PFL_Ptr
  
  A wrapper for a void pointer. Allows any pointer to be treated as a PFL_Obj.
- PFL_File_Ptr
  
  A wrapper for a C file pointer. Allows automatic fclose when the object is terminated.
- PFL_Fn_Ptr
  
  A wrapper for a C function pointer.
- PFL_Run_Fn
  
  A function pointer and data context combined.
- PFL_Data
  
  An arbitrary data structure container.
- PFL_Mem
  
  A binary data byte array.
- PFL_Buffer
  
  A buffer for stream data.
- PFL_Iterator
  
  A controller for iterating over objects that implement the iterable interface.
- PFL_Weak_Ref
  
  A wrapper for an object which does not increment its reference count.
- PFL_Clock
  
  A Date / Time representation.
- PFL_Clock_Format
  
  A description of the string formatting for a PFL_Clock.