bool _fixSingleCascadeStatement()

in lib/src/source_visitor.dart [1394:1432]
33 lines of code
23 McCabe index (conditional complexity)

  bool _fixSingleCascadeStatement(ExpressionStatement statement) {
    var cascade = statement.expression as CascadeExpression;
    if (cascade.cascadeSections.length != 1) return false;

    var target = cascade.target;
    if (target is AsExpression ||
        target is AwaitExpression ||
        target is BinaryExpression ||
        target is ConditionalExpression ||
        target is IsExpression ||
        target is PostfixExpression ||
        target is PrefixExpression) {
      // In these cases, the cascade target needs to be parenthesized before
      // removing the cascade, otherwise the semantics will change.
      _fixCascadeByParenthesizingTarget(statement);
      return true;
    } else if (target is BooleanLiteral ||
        target is FunctionExpression ||
        target is IndexExpression ||
        target is InstanceCreationExpression ||
        target is IntegerLiteral ||
        target is ListLiteral ||
        target is NullLiteral ||
        target is MethodInvocation ||
        target is ParenthesizedExpression ||
        target is PrefixedIdentifier ||
        target is PropertyAccess ||
        target is SimpleIdentifier ||
        target is StringLiteral ||
        target is ThisExpression) {
      // OK to simply remove the cascade.
      _removeCascade(statement);
      return true;
    } else {
      // If we get here, some new syntax was added to the language that the fix
      // does not yet support. Leave it as is.
      return false;
    }
  }