Try sub-expression choices until the first matches (without considering the rest of the expression). More...

#include <cc/syntax_node/ChoiceNode>

Inheritance diagram for ChoiceNode:

Public Member Functions
	ChoiceNode (std::initializer_list< SyntaxNode > choices)

	ChoiceNode (const Array< SyntaxNode > &choices)

Array< SyntaxNode >	choices () const

Public Member Functions inherited from SyntaxNode
	SyntaxNode ()=default
	Create an null syntax node.

	SyntaxNode (char ch)

	SyntaxNode (const char *s)

	SyntaxNode (const SyntaxRule *rule)

	SyntaxNode (Function< bool(char)> &&match)

long	matchNext (const String &text, long offset, Token &production) const
	Match text at offset against this node.

long	matchLength () const
	Match length for this node (or -1 if variable)

String	hint () const
	Hint for generating syntax error messages (Expect failed)

List< String >	explain () const
	Convert to a human-readable form.

Public Member Functions inherited from Object
	Object ()=default
	Create a null object.

	operator bool () const
	Check if this is a non-null object.

bool	isNull () const
	Check if this is a null object.

template<class T >
bool	is () const
	Check if this object is of type T.

template<class T >
T	as () const
	Cast this object to type T.

bool	isWeak () const
	Check if the underlying object reference is weak.

bool	operator== (const Object &other) const
	Equality operator.

std::strong_ordering	operator<=> (const Object &other) const
	Ordering operator.

long	useCount () const
	Reference count.

Additional Inherited Members
Protected Member Functions inherited from SyntaxNode
	SyntaxNode (State *newState)

State &	me ()

const State &	me () const

Protected Member Functions inherited from Object
template<class T >
T	weak () const

template<class T >
void	initOnce ()
	Create the object state when called the first time.

template<class T >
void	initOncePerThread ()
	Create a distinct object state for each thread when called the first time in that thread.

	Object (State *newState)
	Initialize object with newState.

	Object (State *state, Alias)

	Object (State *state, Weak)

Object &	operator= (std::nullptr_t)

Static Protected Member Functions inherited from Object
template<class T >
static T	alias (const State *state)
	Create an alias object for the given state.

template<class T >
static T	weak (const State *state)

Protected Attributes inherited from Object
Handle< State >	me
	Internal object state

Detailed Description

Try sub-expression choices until the first matches (without considering the rest of the expression).

Note: The ChoiceNode does not take into account the subsequent syntax nodes to resolve ambiguity in matching the entire text.

Constructor & Destructor Documentation

ChoiceNode ( std::initializer_list< SyntaxNode > choices )

explicit

Parameters

choices Sub-expresssion choices

ChoiceNode ( const Array< SyntaxNode > & choices )

explicit

Parameters

choices Sub-expresssion choices