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• Parser

Lexeme-option

Fixtype of optional lexemes.

This is an option type introduced by fty::defoption. Note that defoption is just a wrapper for fty::defflexsum, so there are :none and :some member types, a case macro, and so forth.

Member Types

:none → lexeme-option-none

Represents that no lexeme-option is available, i.e., Nothing or None.

:some → lexeme-option-some

An available lexeme-option, i.e., Just val or Some val.

Lexemes are defined in lexeme.

Subtopics

Lexeme-option-fix

Fixing function for lexeme-option structures.

Lexeme-option-case

Case macro for the different kinds of lexeme-option structures.

Lexeme-option-equiv

Basic equivalence relation for lexeme-option structures.

Lexeme-option-some

An available lexeme-option, i.e., Just val or Some val.

Lexeme-option-none

Represents that no lexeme-option is available, i.e., Nothing or None.

Lexeme-optionp

Recognizer for lexeme-option structures.