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String Templates, Algebraic Sign

The example demonstrates the specification of the algebraic sign format for embedded expressions.

Other versions: 7.31 | 7.40 | 7.54

Source Code

    DATA:  num1    TYPE i VALUE -10,
           num2    TYPE i VALUE +10,
           result  TYPE string,
           cldescr TYPE REF TO cl_abap_classdescr,
           formats TYPE abap_attrdescr_tab,
           format  LIKE LINE OF formats.

    FIELD-SYMBOLS <sign> LIKE cl_abap_format=>s_left.

    cldescr ?= cl_abap_classdescr=>describe_by_name( 'CL_ABAP_FORMAT' ).
    formats = cldescr->attributes.
    DELETE formats WHERE name NP 'S_*' OR is_constant <> 'X'.

    LOOP AT formats INTO format.
      ASSIGN cl_abap_format=>(format-name) TO <sign>.
      result = |{ format-name WIDTH = 20  }| &
               |"{ num1 SIGN = (<sign>) }" | &
               |"{ num2 SIGN = (<sign>) }" |.
      WRITE / result.
    ENDLOOP.

Description

The six possible settings for upper/lower case of a character string template are dynamically specified.