31 lines
873 B
Dart
31 lines
873 B
Dart
// Copyright (c) 2015 The Chromium Authors. 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 cassowary;
|
|
|
|
abstract class _EquationMember {
|
|
Expression asExpression();
|
|
|
|
bool get isConstant;
|
|
|
|
double get value;
|
|
|
|
Constraint operator >=(_EquationMember m) => asExpression() >= m;
|
|
|
|
Constraint operator <=(_EquationMember m) => asExpression() <= m;
|
|
|
|
operator ==(_EquationMember m) => asExpression() == m;
|
|
|
|
Expression operator +(_EquationMember m) => asExpression() + m;
|
|
|
|
Expression operator -(_EquationMember m) => asExpression() - m;
|
|
|
|
Expression operator *(_EquationMember m) => asExpression() * m;
|
|
|
|
Expression operator /(_EquationMember m) => asExpression() / m;
|
|
|
|
int get hashCode =>
|
|
throw "An equation member is not comparable and cannot be added to collections";
|
|
}
|