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NaryLexer
Description

NaryLexer is a composite lexer component that has one or more subjects. The NaryLexer allows its subjects to be treated in the same way as a single instance of a Lexer following the Composite Design Pattern.

Refinement of

Lexer

Notation

l

A NaryLexer.

L

A NaryLexer type.

Valid Expressions

In addition to the requirements defined in Lexer, for any NaryLexer the following must be met:

Expression

Semantics

Return type

l.elements

The tuple of elements.

A Boost.Fusion Sequence of Lexer types.

Type Expressions

Expression

Description

l.elements_type

Elements tuple type.

traits::is_nary_lexer<L>::type

Metafunction that evaluates to mpl::true_ if a certain type, L is a NaryLexer, mpl::false_ otherwise (See MPL Boolean Constant).

Invariants

For each element, E, in any NaryLexer, L, the following invariant always holds:

Models

The following lexer components conform to this model:

FIXME Add more links to models of NaryLexer concept


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