process method

@override void process(String path)

Implementation

@override
void process(String path) {
  print('Enum: $path');
  var replacer = CodeReplacer(fileReadString(path));
  var code = parseDartFile(path)!;

  getClasses(code).forEach((classItem) {
    var enumName = getClassName(classItem);
    names.add(enumName);

    var meta = getTag(classItem);
    if (meta != 'enum') return;

    var keys = <String>[];
    var values = <String>[];
    var items = <String>[];

    var methodsToDelete = <String>[
      '==',
      '+',
      'toString',
      'hashCode',
      'parse'
    ];
    var fieldsToDelete = <String>['value', 'keys', 'values', 'items'];
    classItem.members.forEach((field) {
      if (field is ConstructorDeclaration) {
        replacer.space(field.offset, field.length);
      } else if (field is FieldDeclaration &&
          fieldsToDelete.contains(getFieldName(field))) {
        replacer.space(field.offset, field.length);
      } else if (field is MethodDeclaration &&
          methodsToDelete.contains(getMethodName(field))) {
        replacer.space(field.offset, field.length);
      } else if (field is FieldDeclaration && field.fields.isConst) {
        var constant = getFieldName(field);
        var value = getConstructorInput(field)!;

        items.add(constant);
        keys.add("'" + constant + "'");
        values.add("'" + value + "'");
      }
    });

    var template = '''
static const keys = <String>[${keys.join(",")}];
static const values = <String>[${values.join(",")}];
static const items = <$enumName>[${items.join(",")}];

final String value;
const $enumName(this.value);

static $enumName? parse(String? v) => v == null ? null : $enumName(v);

@override
bool operator ==(Object o) => o is $enumName && value == o.value;

@override
int get hashCode => value.hashCode;

$enumName operator +($enumName o) => $enumName(value + o.value);

@override
String toString() => value;
''';

    replacer.add(classItem.offset + classItem.length - 1, 0, template);
  });

  try {
    var output = formatCode(replacer.process());
    fileWriteString(path, output);
  } catch (e) {
    print(e);
    return;
  }

  _lastGenerated = path;
}