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UnaryLexer
Description

UnaryLexer is a composite lexer component that has a single subject. The UnaryLexer may change the behavior of its subject following the Delegate Design Pattern.

Refinement of

Lexer

Notation

l

A UnaryLexer.

L

A UnaryLexer type.

Valid Expressions

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

Expression

Semantics

Return type

l.subject

Subject lexer component.

Lexer

Type Expressions

Expression

Description

L::subject_type

The subject lexer component type.

traits::is_unary_lexer<L>::type

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

Invariants

For any UnaryLexer, L, the following invariant always holds:

Models

The following lexer components conform to this model:

FIXME Add more links to models of UnaryLexer concept


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