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This is an older version of Boost and was released in 2024. The current version is 1.89.0.

BinaryParser

BinaryParser

Description

BinaryParser is a composite parser that has a two subjects, left and right. The BinaryParser allows its subjects to be treated in the same way as a single instance of a Parser following the Composite Design Pattern.

Refinement of

Parser

Notation

p: A BinaryParser.
P: A BinaryParser type.

Valid Expressions

In addition to the requirements defined in Parser, for any BinaryParser the following must be met:

Expression	Semantics	Return type
`p.left`	Left parser.	`Parser`
`p.right`	Right parser.	`Parser`

Type Expressions

Expression	Description
`P::left_type`	The left parser type.
`P::right_type`	The right parser type.
`traits::is_binary_parser<P>::type`	Metafunction that evaluates to `mpl::true_` if a certain type, `P` is a BinaryParser, `mpl::false_` otherwise (See MPL Boolean Constant).

Invariants

For any BinaryParser, P, the following invariants always hold:

traits::is_parser<P::left_type>::type evaluates to mpl::true_
traits::is_parser<P::right_type>::type evaluates to mpl::true_

Models