function genericMatchingCodeForAlgebraicType()

in src/plugins/algebraic-type-matching-generic.ts [92:132]

• 37 lines of code
• 1 McCabe index (conditional complexity)

function genericMatchingCodeForAlgebraicType(
  algebraicType: AlgebraicType.Type,
): string[] {
  const localVariableDeclaration: string[] = ['__block id result = nil;', ''];

  const matchingBlockCode: string[] = algebraicType.subtypes.reduce(
    (soFar, subtype) =>
      buildLocalFunctionBlockDefinitionsForSubtype(
        algebraicType,
        soFar,
        subtype,
      ),
    [],
  );

  const keywordPartsForMatchInvocation: string[] =
    algebraicType.subtypes.reduce(
      (soFar, subtype, idx) =>
        AlgebraicTypeUtilsForMatching.buildKeywordPartsForInvokingMatchMethodForSubtype(
          algebraicType,
          soFar,
          subtype,
          idx,
        ),
      [],
    );
  const matchInvocation: string[] = [
    '[' +
      parameterNameForAlgebraicType(algebraicType) +
      ' ' +
      keywordPartsForMatchInvocation.join(' ') +
      '];',
  ];

  const returnStatement: string[] = ['', 'return result;'];

  return localVariableDeclaration
    .concat(matchingBlockCode)
    .concat(matchInvocation)
    .concat(returnStatement);
}