|   | Section 8.14:Representation Classes
 |  | 
  
This section of the required library contains definitions of those
abstractions and classes which relate to the presentation of internal values
as external text strings - in particular the concept of formatting (laying
out) some textual utterance.
  - Abstract Classes - 
      - $FMT - this abstraction models any object
        which may have a textual representation generated and recognised.
- $VAL_DESCR - this abstraction models
        the description of a text representation layout for some value.
- $EXACT_FMT - this abstraction models
        any exact number object which may have a textual representation
        generated and recognised.
- $EXACT_DESCR - this abstraction
        models the description of a text representation layout for any exact
        number.
- $FIXED_FMT - this abstraction models
        any fixed point number object which may have a textual representation
        generated and recognised.
- $FIXED_DESCR - this abstraction
        models the description of a text representation layout for any fixed
        point number.
- $FLT_FMT - this abstraction models any
        floating point number object which may have a textual representation
        generated and recognised.
- $FLT_DESCR - this abstraction models
        the description of a text representation layout for any floating point
        number.
- $ANCHORED_FMT - this abstraction
        models any non-numeric object which may have a textual representation
        generated and recognised.
- $ANCHORED_DESCR - this
        abstraction models the description of a text representation layout for
        any non-numeric object value.
- $MULTI_STR - this abstraction models
        the formatting and rendering facilities of multi-component culture required (and defined) objects.
 
- Immutable Classes - 
      - CONVERSION_RESULTS - this
        enumeration class implements the possible errors which could occur
        when attempting to recognise some textual representation of an object
        value.
 
- Reference Classes - 
      - EXACT_DESCR - this class implements
        the descriptor of whole number layouts.
- FIXED_DESCR - this class implements
        the descriptor of fixed point number layouts.
- FLT_DESCR - this class implements the
        descriptor of real number floating point layouts including an
        exponent.
- ANCHORED_DESCR - this class
        implements the descriptor of non-numeric representation layouts.
- FMT - this class implements the formatter
        which converts values and layout descriptor strings into a textual
        representation string.
 
 
  
    
      | Comments
        or enquiries should be made to Keith Hopper. Page last modified:  Friday, 10 March 2000.
 |   |