| // Copyright 2019 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "parser.h" |
| |
| namespace netdump::parser { |
| |
| void parser_syntax(std::ostream* output) { |
| ZX_DEBUG_ASSERT_MSG(output != nullptr, "Output stream for parser syntax was null."); |
| #define BOLD(x) ANSI_BOLD << (x) << ANSI_RESET |
| #define ENDL std::endl |
| // clang-format off |
| (*output) |
| << " expr ::= " << BOLD("(") << " expr " << BOLD(")") << ENDL |
| << " | " << BOLD("not") << " expr |" |
| << " expr " << BOLD("and") << " expr |" |
| << " expr " << BOLD("or") << " expr" << ENDL |
| << " | eth_expr | host_expr | trans_expr" << ENDL |
| << "length_expr ::= " << BOLD("greater") << " <len> | " << BOLD("less") << " <len>" << ENDL |
| << " type ::= " << BOLD("src") << " | " << BOLD("dst") << ENDL |
| << " eth_expr ::= length_expr" << ENDL |
| << " | "<< BOLD("ether") << " [type] " << BOLD("host") << " <mac_addr>"<< ENDL |
| << " | [" << BOLD("ether") << " " << BOLD("proto") << "] net_expr" << ENDL |
| << " net_expr ::= " << BOLD("arp") << ENDL |
| << " | " << BOLD("vlan") << ENDL |
| << " | " << BOLD("ip") << " [length_expr | host_expr | trans_expr]" << ENDL |
| << " | " << BOLD("ip6") << " [length_expr | host_expr | trans_expr]" << ENDL |
| << " host_expr ::= [type] " << BOLD("host") << " <ip_addr>" << ENDL |
| << " trans_expr ::= [" << BOLD("proto") << "] " << BOLD("icmp") << ENDL |
| << " | [" << BOLD("proto") << "] " << BOLD("tcp") << " [port_expr]" << ENDL |
| << " | [" << BOLD("proto") << "] " << BOLD("udp") << " [port_expr]" << ENDL |
| << " port_expr ::= [type] " << BOLD("port") << " <port_lst>" << ENDL; |
| // clang-format on |
| #undef ENDL |
| #undef BOLD |
| } |
| |
| } // namespace netdump::parser |
