JUCE: misc

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Classes | Macros | Typedefs | Functions
misc
juce_core

## Classes
struct | ArgumentList
| Holds a list of command-line arguments, and provides useful methods for searching and operating on them. More...
struct | ArgumentList::Argument
| One of the arguments in an ArgumentList. More...
struct | ConsoleApplication
| Represents a the set of commands that a console app can perform, and provides helper functions for performing them. More...
struct | ConsoleApplication::Command
| Represents a command that can be executed if its command-line arguments are matched. More...
struct | NullCheckedInvocation
| Some helper methods for checking a callable object before invoking with the specified arguments. More...
class | Result
| Represents the 'success' or 'failure' of an operation, and holds an associated error message to describe the error when there's a failure. More...
class | RuntimePermissions
struct | ScopeGuard< Fn >
| An easy way to ensure that a function is called at the end of the current scope. More...
class | ErasedScopeGuard
| A ScopeGuard that uses a std::function internally to allow type erasure. More...
class | Uuid
| A universally unique 128-bit identifier. More...
class | WindowsRegistry
| Contains some static helper functions for manipulating the MS Windows registry (Only available on Windows, of course!) More...

## Macros
#define | JUCE_DECLARE_SCOPED_ENUM_BITWISE_OPERATORS(EnumType)
| Macro to enable bitwise operations for scoped enums (enum struct/class).

## Typedefs
template<typename A , typename B >
using | DisableIfSameOrDerived = std::enable_if_t<! std::is_base_of_v<A, std::remove_reference_t<B>>>
| Can be used to disable template constructors that would otherwise cause ambiguity with compiler-generated copy and move constructors.

## Functions
template<typename EnumType , std::enable_if_t< std::is_enum_v< EnumType >, int > = 0>
constexpr bool | hasBitValueSet (EnumType enumValue, EnumType valueToLookFor) noexcept
template<typename EnumType , std::enable_if_t< std::is_enum_v< EnumType >, int > = 0>
constexpr EnumType | withBitValueSet (EnumType enumValue, EnumType valueToAdd) noexcept
template<typename EnumType , std::enable_if_t< std::is_enum_v< EnumType >, int > = 0>
constexpr EnumType | withBitValueCleared (EnumType enumValue, EnumType valueToRemove) noexcept
template<typename Object , typename OtherObject , typename Member , typename Other >
Object | withMember (Object copy, Member OtherObject::*member, Other &&value)
| Copies an object, sets one of the copy's members to the specified value, and then returns the copy.
template<typename Fn >
| ScopeGuard (Fn) -> ScopeGuard< Fn >

## Detailed Description

## Macro Definition Documentation

## ◆ JUCE_DECLARE_SCOPED_ENUM_BITWISE_OPERATORS

#define JUCE_DECLARE_SCOPED_ENUM_BITWISE_OPERATORS | ( |  | EnumType | ) |

Value:
static_assert (std::is_enum_v<EnumType>, \
"JUCE_DECLARE_SCOPED_ENUM_BITWISE_OPERATORS " \
"should only be used with enum types"); \
constexpr auto operator& (EnumType a, EnumType b) \
{ \
using base_type = std::underlying_type<EnumType>::type; \
return static_cast<EnumType> (base_type (a) & base_type (b)); \
} \
constexpr auto operator| (EnumType a, EnumType b) \
{ \
using base_type = std::underlying_type<EnumType>::type; \
return static_cast<EnumType> (base_type (a) | base_type (b)); \
} \
constexpr auto operator~ (EnumType a) \
{ \
using base_type = std::underlying_type<EnumType>::type; \
return static_cast<EnumType> (~base_type (a)); \
} \
constexpr auto& operator|= (EnumType& a, EnumType b) \
{ \
a = (a | b); \
return a; \
} \
constexpr auto& operator&= (EnumType& a, EnumType b) \
{ \
a = (a & b); \
return a; \
}

Macro to enable bitwise operations for scoped enums (enum struct/class).

To use this, add the line JUCE_DECLARE_SCOPED_ENUM_BITWISE_OPERATORS (MyEnum) after your enum declaration at file scope level.

e.g.

enum class MyEnum
{
one = 1 << 0,
two = 1 << 1,
three = 1 << 2
};
JUCE_DECLARE_SCOPED_ENUM_BITWISE_OPERATORS (MyEnum)
MyEnum e = MyEnum::one | MyEnum::two;
bool hasTwo = (e & MyEnum::two) != MyEnum{}; // true
bool hasTwo = hasBitValueSet (e, MyEnum::two); // true
e = withBitValueCleared (e, MyEnum::two);
bool hasTwo = hasBitValueSet (e, MyEnum::two); // false
hasBitValueSet
constexpr bool hasBitValueSet(EnumType enumValue, EnumType valueToLookFor) noexcept
Definition juce_EnumHelpers.h:87
withBitValueCleared
constexpr EnumType withBitValueCleared(EnumType enumValue, EnumType valueToRemove) noexcept
Definition juce_EnumHelpers.h:99
JUCE_DECLARE_SCOPED_ENUM_BITWISE_OPERATORS
#define JUCE_DECLARE_SCOPED_ENUM_BITWISE_OPERATORS(EnumType)
Macro to enable bitwise operations for scoped enums (enum struct/class).
Definition juce_EnumHelpers.h:56

## Typedef Documentation

## ◆ DisableIfSameOrDerived

template<typename A , typename B >

using DisableIfSameOrDerived = std::enable_if_t<! std::is_base_of_v<A, std::remove_reference_t<B>>>

Can be used to disable template constructors that would otherwise cause ambiguity with compiler-generated copy and move constructors.

Adapted from https://ericniebler.com/2013/08/07/universal-references-and-the-copy-constructo/

## Function Documentation

## ◆ hasBitValueSet()

template<typename EnumType , std::enable_if_t< std::is_enum_v< EnumType >, int > = 0>

constexpr bool hasBitValueSet | ( | EnumType | enumValue,
|  | EnumType | valueToLookFor )
| constexprnoexcept

## ◆ withBitValueSet()

template<typename EnumType , std::enable_if_t< std::is_enum_v< EnumType >, int > = 0>

constexpr EnumType withBitValueSet | ( | EnumType | enumValue,
|  | EnumType | valueToAdd )
| constexprnoexcept

## ◆ withBitValueCleared()

template<typename EnumType , std::enable_if_t< std::is_enum_v< EnumType >, int > = 0>

constexpr EnumType withBitValueCleared | ( | EnumType | enumValue,
|  | EnumType | valueToRemove )
| constexprnoexcept

## ◆ withMember()

template<typename Object , typename OtherObject , typename Member , typename Other >

Object withMember | ( | Object | copy,
|  | Member OtherObject::* | member,
|  | Other && | value )

Copies an object, sets one of the copy's members to the specified value, and then returns the copy.

Referenced by Tolerance< Type >::withAbsolute(), MessageBoxOptions::withAssociatedComponent(), AudioProcessorParameterWithIDAttributes::withAutomatable(), AudioProcessorValueTreeStateParameterAttributes::withAutomatable(), RangedAudioParameterAttributes< Derived, Value >::withAutomatable(), WebBrowserComponent::Options::withBackend(), WebBrowserComponent::Options::WinWebView2::withBackgroundColour(), AudioProcessorValueTreeStateParameterAttributes::withBoolean(), WebBrowserComponent::Options::WinWebView2::withBuiltInErrorPageDisabled(), AudioProcessorParameterWithIDAttributes::withCategory(), AudioProcessorValueTreeStateParameterAttributes::withCategory(), RangedAudioParameterAttributes< Derived, Value >::withCategory(), juce::midi_ci::ChannelAddress::withChannel(), ThreadPoolOptions::withDesiredThreadPriority(), juce::midi_ci::DeviceOptions::withDeviceInfo(), AudioProcessorValueTreeStateParameterAttributes::withDiscrete(), WebBrowserComponent::Options::WinWebView2::withDLLLocation(), ToVarOptions::withExplicitVersion(), juce::midi_ci::DeviceOptions::withFeatures(), juce::midi_ci::DeviceOptions::withFunctionBlock(), juce::midi_ci::ChannelAddress::withGroup(), MessageBoxOptions::withIconType(), JSON::FormatOptions::withIndentLevel(), AudioProcessorParameterWithIDAttributes::withInverted(), AudioProcessorValueTreeStateParameterAttributes::withInverted(), RangedAudioParameterAttributes< Derived, Value >::withInverted(), WebBrowserComponent::Options::withKeepPageLoadedWhenBrowserIsHidden(), AudioProcessorParameterWithIDAttributes::withLabel(), AudioProcessorValueTreeStateParameterAttributes::withLabel(), RangedAudioParameterAttributes< Derived, Value >::withLabel(), JSON::FormatOptions::withMaxDecimalPlaces(), Thread::RealtimeOptions::withMaximumProcessingTimeMs(), juce::midi_ci::DeviceOptions::withMaxSysExSize(), MessageBoxOptions::withMessage(), AudioProcessorParameterWithIDAttributes::withMeta(), AudioProcessorValueTreeStateParameterAttributes::withMeta(), RangedAudioParameterAttributes< Derived, Value >::withMeta(), ThreadPoolOptions::withNumberOfThreads(), juce::midi_ci::DeviceOptions::withOutputs(), MessageBoxOptions::withParentComponent(), Thread::RealtimeOptions::withPeriodMs(), Thread::RealtimeOptions::withPriority(), Thread::RealtimeOptions::withProcessingTimeMs(), juce::midi_ci::DeviceOptions::withProductInstanceId(), juce::midi_ci::DeviceOptions::withProfileDelegate(), juce::midi_ci::DeviceOptions::withPropertyDelegate(), SocketOptions::withReceiveBufferSize(), Tolerance< Type >::withRelative(), SocketOptions::withSendBufferSize(), JSON::FormatOptions::withSpacing(), WebBrowserComponent::Options::WinWebView2::withStatusBarDisabled(), AudioProcessorValueTreeStateParameterAttributes::withStringFromValueFunction(), RangedAudioParameterAttributes< Derived, Value >::withStringFromValueFunction(), ThreadPoolOptions::withThreadName(), ThreadPoolOptions::withThreadStackSizeBytes(), MessageBoxOptions::withTitle(), WebBrowserComponent::Options::withUserAgent(), WebBrowserComponent::Options::WinWebView2::withUserDataFolder(), AudioProcessorValueTreeStateParameterAttributes::withValueFromStringFunction(), RangedAudioParameterAttributes< Derived, Value >::withValueFromStringFunction(), ToVarOptions::withVersionIncluded(), and WebBrowserComponent::Options::withWinWebView2Options().

## ◆ ScopeGuard()

template<typename Fn >

ScopeGuard | ( | Fn |  | ) | -> ScopeGuard< Fn >