Prefer nmin/nmax or clamp Expressions over Manual IF Clamping

WarningClean ABAP & Modern SyntaxQuickFix Ready#EC PREF_CLAMPRemote Enabled

Overview

Prefer nmin/nmax over manual IF clamp.

ATC Finding Message: Manual range clamping detected; consider using nmin( ) and nmax( )

Rationale

Manually clamping a variable between lower and upper bounds using IF/ELSEIF statements is verbose and imperative. Modern ABAP provides built-in functions like nmin( ) and nmax( ) or clamp( ) that express range containment concisely and without branch complexity.

Non-Compliant

IF lv < lo.
  lv = lo.
ELSEIF lv > hi.
  lv = hi.
ENDIF.

Compliant

lv = nmin( val1 = hi
           val2 = nmax( val1 = lo
                        val2 = lv ) ).

Automated QuickFix

This rule provides an automated QuickFix directly in Eclipse ABAP Development Tools (ADT):

1. Position the cursor on the flagged statement.
2. Press Ctrl + 1 (Quick Assist).
3. Select the automated refactoring to apply the clean syntax immediately.

Suppression

To suppress findings for this rule, append the pseudo-comment to the statement:

" Standard pseudo-comment:
... "#EC PREF_CLAMP

" SAP CI_ prefix format:
... "#EC CI_PREF_CLAMP

Related Rules

• Prefer BETWEEN for Inclusive Range Checks — #EC PREF_BETWEEN
• Prefer COND #( ) Expression over IF/ELSEIF/ELSE — #EC PREF_COND
• Prefer SWITCH #( ) Expression over CASE Statement — #EC PREF_SWITCH

Technical Details

• Native ATC Class: ZCL_SKYLINT_PREF_CLAMP
• Implementation File: zcl_skylint_pref_clamp.clas.abap