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112 lines
5 KiB
C++
112 lines
5 KiB
C++
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// Copyright (c) 2014-2022 Dr. Colin Hirsch and Daniel Frey
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// Please see LICENSE for license or visit https://github.com/taocpp/PEGTL/
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#ifndef TAO_PEGTL_CONTRIB_URI_HPP
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#define TAO_PEGTL_CONTRIB_URI_HPP
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#if !defined( __cpp_exceptions )
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#error "Exception support required for tao/pegtl/contrib/uri.hpp"
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#else
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#include <cstdint>
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#include "../ascii.hpp"
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#include "../config.hpp"
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#include "../rules.hpp"
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#include "../utf8.hpp"
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#include "abnf.hpp"
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#include "integer.hpp"
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namespace TAO_PEGTL_NAMESPACE::uri
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{
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// URI grammar according to RFC 3986.
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// This grammar is a direct PEG translation of the original URI grammar.
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// It should be considered experimental -- in case of any issues, in particular
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// missing rules for attached actions, please contact the developers.
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// Note that this grammar has multiple top-level rules.
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using dot = one< '.' >;
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using colon = one< ':' >;
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// clang-format off
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struct dec_octet : maximum_rule< std::uint8_t > {};
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struct IPv4address : seq< dec_octet, dot, dec_octet, dot, dec_octet, dot, dec_octet > {};
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struct h16 : rep_min_max< 1, 4, abnf::HEXDIG > {};
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struct ls32 : sor< seq< h16, colon, h16 >, IPv4address > {};
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struct dcolon : two< ':' > {};
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struct IPv6address : sor< seq< rep< 6, h16, colon >, ls32 >,
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seq< dcolon, rep< 5, h16, colon >, ls32 >,
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seq< opt< h16 >, dcolon, rep< 4, h16, colon >, ls32 >,
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seq< opt< h16, opt< colon, h16 > >, dcolon, rep< 3, h16, colon >, ls32 >,
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seq< opt< h16, rep_opt< 2, colon, h16 > >, dcolon, rep< 2, h16, colon >, ls32 >,
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seq< opt< h16, rep_opt< 3, colon, h16 > >, dcolon, h16, colon, ls32 >,
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seq< opt< h16, rep_opt< 4, colon, h16 > >, dcolon, ls32 >,
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seq< opt< h16, rep_opt< 5, colon, h16 > >, dcolon, h16 >,
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seq< opt< h16, rep_opt< 6, colon, h16 > >, dcolon > > {};
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struct gen_delims : one< ':', '/', '?', '#', '[', ']', '@' > {};
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struct sub_delims : one< '!', '$', '&', '\'', '(', ')', '*', '+', ',', ';', '=' > {};
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struct unreserved : sor< abnf::ALPHA, abnf::DIGIT, one< '-', '.', '_', '~' > > {};
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struct reserved : sor< gen_delims, sub_delims > {};
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struct IPvFuture : if_must< one< 'v', 'V' >, plus< abnf::HEXDIG >, dot, plus< sor< unreserved, sub_delims, colon > > > {};
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struct IP_literal : if_must< one< '[' >, sor< IPvFuture, IPv6address >, one< ']' > > {};
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struct pct_encoded : if_must< one< '%' >, abnf::HEXDIG, abnf::HEXDIG > {};
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struct pchar : sor< unreserved, pct_encoded, sub_delims, one< ':', '@' > > {};
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struct query : star< sor< pchar, one< '/', '?' > > > {};
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struct fragment : star< sor< pchar, one< '/', '?' > > > {};
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struct segment : star< pchar > {};
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struct segment_nz : plus< pchar > {};
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struct segment_nz_nc : plus< sor< unreserved, pct_encoded, sub_delims, one< '@' > > > {}; // non-zero-length segment without any colon ":"
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struct path_abempty : star< one< '/' >, segment > {};
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struct path_absolute : seq< one< '/' >, opt< segment_nz, star< one< '/' >, segment > > > {};
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struct path_noscheme : seq< segment_nz_nc, star< one< '/' >, segment > > {};
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struct path_rootless : seq< segment_nz, star< one< '/' >, segment > > {};
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struct path_empty : success {};
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struct path : sor< path_noscheme, // begins with a non-colon segment
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path_rootless, // begins with a segment
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path_absolute, // begins with "/" but not "//"
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path_abempty > {}; // begins with "/" or is empty
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struct reg_name : star< sor< unreserved, pct_encoded, sub_delims > > {};
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struct port : star< abnf::DIGIT > {};
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struct host : sor< IP_literal, IPv4address, reg_name > {};
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struct userinfo : star< sor< unreserved, pct_encoded, sub_delims, colon > > {};
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struct opt_userinfo : opt< userinfo, one< '@' > > {};
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struct authority : seq< opt_userinfo, host, opt< colon, port > > {};
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struct scheme : seq< abnf::ALPHA, star< sor< abnf::ALPHA, abnf::DIGIT, one< '+', '-', '.' > > > > {};
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using dslash = two< '/' >;
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using opt_query = opt_must< one< '?' >, query >;
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using opt_fragment = opt_must< one< '#' >, fragment >;
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struct hier_part : sor< if_must< dslash, authority, path_abempty >, path_rootless, path_absolute, path_empty > {};
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struct relative_part : sor< if_must< dslash, authority, path_abempty >, path_noscheme, path_absolute, path_empty > {};
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struct relative_ref : seq< relative_part, opt_query, opt_fragment > {};
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struct URI : seq< scheme, one< ':' >, hier_part, opt_query, opt_fragment > {};
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struct URI_reference : sor< URI, relative_ref > {};
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struct absolute_URI : seq< scheme, one< ':' >, hier_part, opt_query > {};
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// clang-format on
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} // namespace TAO_PEGTL_NAMESPACE::uri
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#endif
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#endif
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