DataCap Class Reference

Description

Definition at line 153 of file gen-node.hpp.

Public Member Functions
template<typename X >
	DataCap (X &&x)
	DataCap (DataCap const &)=default
	DataCap (DataCap &&)=default
	DataCap (DataCap &o)
Rec::scopeIter	childIter () const
	visit children of a nested Record<GenNode>
Locator	expand () const
template<typename X >
X &	get ()
template<typename X >
X const &	get () const
template<>
Rec &	get ()
	especially when accessing for a Record, a payload of type RecordRef<Record<GenNode>> (aka RecRef) will be automatically dereferenced. More...
template<>
Rec const &	get () const
bool	hasAttribute (string key) const
bool	isNested () const
	determine if payload constitutes a nested scope ("object")
bool	matchBool (bool) const
bool	matchData (DataCap const &) const
	Implementation of content equality test, delgating to content. More...
bool	matchDbl (double) const
bool	matchLuid (hash::LuidH) const
bool	matchNum (int64_t) const
bool	matchRec (RecRef const &) const
bool	matchRec (Rec const &) const
bool	matchTime (time::TimeValue) const
bool	matchTxt (string const &) const
	operator string () const
DataCap &	operator= (DataCap const &)=default
DataCap &	operator= (DataCap &&)=default
string	recordType () const
	peek into the type field of a nested Record<GenNode> More...
template<typename X >
std::optional< X >	retrieveAttribute (string key) const
	peek into the attributes of a nested Record
Public Member Functions inherited from Variant< DataValues >
	Variant (X &&x)
	Variant (Variant &ref)
	Variant (Variant const &ref)
	Variant (Variant &&rref)
void	accept (Visitor &visitor)
bool	accept (Predicate &visitor) const
string	accept (Renderer &visitor) const
X &	get ()
X const &	get () const
	operator string () const
	diagnostic helper
Variant &	operator= (X x)
Variant &	operator= (Variant &ovar)
Variant &	operator= (Variant const &ovar)
Variant &	operator= (Variant &&rvar)

Classes
struct	Locator

Private Member Functions
Rec *	maybeAccessNestedRec ()

Additional Inherited Members
Public Types inherited from Variant< DataValues >
enum
using	FirstMatching = variant::FirstMatchingType< DataValues, _P_ >
	Metafunction to pick the first of the variant's types, which satisfies the given trait or predicate template. More...
using	VisitorConstFunc = typename variant::VFunc< RET >::template VisitorInterface< meta::ConstAll< typename DataValues ::List > >
using	VisitorFunc = typename variant::VFunc< RET >::template VisitorInterface< DataValues >
Protected Member Functions inherited from Variant< DataValues >
Buff< X > &	buff ()
Buffer &	buffer ()
Buffer const &	buffer () const
X *	maybeGet ()

Member Function Documentation

matchData()

bool matchData

(

DataCap const &

o

)

const

Implementation of content equality test, delgating to content.

Exceptions

error::Logic

when the given other DataCap does not hold a value of the same type than this DataCap.

Remarks

since the GenNode::ID is generated including a type hash, the equality operator of GenNode ensures this content test is only called on a compatible DataCap.

special treatment to allow matching a RecRef with an Record or RecRef on the other side

Definition at line 78 of file gen-node.cpp.

expand()

DataCap::Locator expand ( ) const

inline

Core operation to expand nested scopes recursively

Definition at line 652 of file gen-node.hpp.

recordType()

string recordType ( ) const

inline

peek into the type field of a nested Record<GenNode>

Returns

either the contents of a nested record's type field or the util::BOTTOM_INDICATOR, when not a record.

Remarks

this function never raises an error, even if the element in fact doesn't constitute a nested scope. Effectively this allows to "peek" into the contents to some degree.

Definition at line 760 of file gen-node.hpp.

Referenced by TrackPresenter::buildMutator().

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maybeAccessNestedRec()

Rec * maybeAccessNestedRec ( )

inlineprivate

helper to possibly peek into a nested record

Definition at line 740 of file gen-node.hpp.

get()

Rec& get ( )

inline

especially when accessing for a Record, a payload of type RecordRef<Record<GenNode>> (aka RecRef) will be automatically dereferenced.

Effectively this allows a GenNode with a RecRef payload to "stand in" for a node holding a full Record inline. And it allows the construction of a special Ref-GenNode , which even shares the identity (the ID) of the referenced record-GenNode.

Note

effectively this opens an indirect loophole to const correctness, since it is possible explicitly to retrieve the RecRef from a const GenNode and then to access the referred-to Record without const. In case this turns out to be problematic, we'd have to alter the semantics of RecRef

Definition at line 720 of file gen-node.hpp.

Referenced by WrappedStandardExeBuilder::__call__().

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Inheritance diagram for DataCap:

Collaboration diagram for DataCap:

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The documentation for this class was generated from the following files:

• gen-node.hpp
• gen-node.cpp