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juce_Result.h
1/*
2 ==============================================================================
3
4 This file is part of the JUCE library.
5 Copyright (c) 2022 - Raw Material Software Limited
6
7 JUCE is an open source library subject to commercial or open-source
8 licensing.
9
10 The code included in this file is provided under the terms of the ISC license
11 http://www.isc.org/downloads/software-support-policy/isc-license. Permission
12 To use, copy, modify, and/or distribute this software for any purpose with or
13 without fee is hereby granted provided that the above copyright notice and
14 this permission notice appear in all copies.
15
16 JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
17 EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
18 DISCLAIMED.
19
20 ==============================================================================
21*/
22
23 namespace juce
24{
25
26//==============================================================================
56 class JUCE_API Result
57{
58 public:
59 //==============================================================================
61 static Result ok() noexcept { return Result(); }
62
67 static Result fail (const String& errorMessage) noexcept;
68
69 //==============================================================================
71 bool wasOk() const noexcept;
72
77 bool failed() const noexcept;
78
82 operator bool() const noexcept;
83
87 bool operator!() const noexcept;
88
92 const String& getErrorMessage() const noexcept;
93
94 //==============================================================================
95 Result (const Result&);
96 Result& operator= (const Result&);
97 Result (Result&&) noexcept;
98 Result& operator= (Result&&) noexcept;
99
100 bool operator== (const Result& other) const noexcept;
101 bool operator!= (const Result& other) const noexcept;
102
103private:
104 String errorMessage;
105
106 // The default constructor is not for public use!
107 // Instead, use Result::ok() or Result::fail()
108 Result() noexcept;
109 explicit Result (const String&) noexcept;
110
111 // These casts are private to prevent people trying to use the Result object in numeric contexts
112 operator int() const;
113 operator void*() const;
114};
115
116} // namespace juce
juce::Result
Definition juce_Result.h:57
juce::Result::ok
static Result ok() noexcept
Definition juce_Result.h:61
juce::String
Definition juce_String.h:53