SWI-Prolog -- csym//1

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Grammar rule csym//1

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Availability::- use_module(library(dcg/basics)).

Source

[semidet]csym(?Symbol:atom)//

Recognise a C identifier: an ASCII letter or underscore followed by ASCII letters, digits and underscores. This is the csymf and csym classification of code_type/2. Note that this does not cover identifiers holding non-ASCII characters; classify those with the prolog_atom_start and prolog_identifier_continue types.