pkgs/code_builder/lib/src/builders/expression/operators.dart

// Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

part of code_builder.src.builders.expression;

class _AsBinaryExpression extends Object
    with AbstractExpressionMixin, TopLevelMixin {
  final ExpressionBuilder _left;
  final ExpressionBuilder _right;
  final Token _operator;

  _AsBinaryExpression(this._left, this._right, this._operator);

  @override
  AstNode buildAst([Scope scope]) => buildExpression(scope);

  @override
  Expression buildExpression([Scope scope]) {
    return astFactory.binaryExpression(
      _left.buildExpression(scope),
      _operator,
      _right.buildExpression(scope),
    );
  }
}

class _DecrementExpression extends Object
    with AbstractExpressionMixin, TopLevelMixin {
  final ExpressionBuilder _expression;

  _DecrementExpression(this._expression);

  @override
  AstNode buildAst([Scope scope]) => buildExpression(scope);

  @override
  Expression buildExpression([Scope scope]) {
    return astFactory.postfixExpression(
      _expression.buildExpression(scope),
      $minusMinus,
    );
  }
}

class _IncrementExpression extends Object
    with AbstractExpressionMixin, TopLevelMixin {
  final ExpressionBuilder _expression;
  final bool _prefix;

  _IncrementExpression(this._expression, this._prefix);

  @override
  AstNode buildAst([Scope scope]) => buildExpression(scope);

  @override
  Expression buildExpression([Scope scope]) {
    if (_prefix) {
      return astFactory.prefixExpression(
        $plusPlus,
        _expression.buildExpression(scope),
      );
    }
    return astFactory.postfixExpression(
      _expression.buildExpression(scope),
      $plusPlus,
    );
  }
}