blob: 8d18340d4f40868f5c8194ddd51b654d7d863791 [file] [log] [blame]
/*
* Copyright (C) 2018 CESNET, https://photonics.cesnet.cz/
* Copyright (C) 2018 FIT CVUT, https://fit.cvut.cz/
*
* Written by Václav Kubernát <kubervac@fit.cvut.cz>
*
*/
#pragma once
#include <boost/spirit/home/x3.hpp>
#include "ast_commands.hpp"
#include "ast_handlers.hpp"
#include "common_parsers.hpp"
#include "leaf_data.hpp"
#include "path_parser.hpp"
x3::rule<discard_class, discard_> const discard = "discard";
x3::rule<ls_class, ls_> const ls = "ls";
x3::rule<cd_class, cd_> const cd = "cd";
x3::rule<set_class, set_> const set = "set";
x3::rule<get_class, get_> const get = "get";
x3::rule<create_class, create_> const create = "create";
x3::rule<delete_class, delete_> const delete_rule = "delete_rule";
x3::rule<commit_class, commit_> const commit = "commit";
x3::rule<describe_class, describe_> const describe = "describe";
x3::rule<help_class, help_> const help = "help";
x3::rule<copy_class, copy_> const copy = "copy";
x3::rule<move_class, move_> const move = "move";
x3::rule<dump_class, dump_> const dump = "dump";
x3::rule<command_class, command_> const command = "command";
x3::rule<createCommandSuggestions_class, x3::unused_type> const createCommandSuggestions = "createCommandSuggestions";
#if __clang__
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Woverloaded-shift-op-parentheses"
#endif
namespace ascii = boost::spirit::x3::ascii;
struct ls_options_table : x3::symbols<LsOption> {
ls_options_table()
{
add
("--recursive", LsOption::Recursive);
}
} const ls_options;
auto const ls_def =
ls_::name >> *(space_separator >> ls_options) >> -(space_separator >> (anyPath | (module >> "*")));
auto const cd_def =
cd_::name >> space_separator > dataPath;
auto const create_def =
create_::name >> space_separator > (presenceContainerPath | listInstancePath | leafListElementPath);
auto const delete_rule_def =
delete_::name >> space_separator > (presenceContainerPath | listInstancePath | leafListElementPath | writableLeafPath);
auto const get_def =
get_::name >> -(space_separator >> ((dataPathListEnd | dataPath) | (module >> "*")));
auto const set_def =
set_::name >> space_separator > writableLeafPath > space_separator > leaf_data;
auto const commit_def =
commit_::name >> x3::attr(commit_());
auto const discard_def =
discard_::name >> x3::attr(discard_());
struct command_names_table : x3::symbols<decltype(help_::m_cmd)> {
command_names_table()
{
boost::mpl::for_each<CommandTypes, boost::type<boost::mpl::_>>([this](auto cmd) {
add(commandNamesVisitor(cmd), decltype(help_::m_cmd)(cmd));
});
}
} const command_names;
auto const help_def =
help_::name > createCommandSuggestions >> -command_names;
struct datastore_symbol_table : x3::symbols<Datastore> {
datastore_symbol_table()
{
add
("running", Datastore::Running)
("startup", Datastore::Startup);
}
} const datastore;
auto copy_source = x3::rule<class source, Datastore>{"source datastore"} = datastore;
auto copy_destination = x3::rule<class source, Datastore>{"destination datastore"} = datastore;
const auto datastoreSuggestions = x3::eps[([](auto& ctx) {
auto& parserContext = x3::get<parser_context_tag>(ctx);
parserContext.m_suggestions = {Completion{"running", " "}, Completion{"startup", " "}};
parserContext.m_completionIterator = _where(ctx).begin();
})];
struct copy_args : x3::parser<copy_args> {
using attribute_type = copy_;
template <typename It, typename Ctx, typename RCtx>
bool parse(It& begin, It end, Ctx const& ctx, RCtx& rctx, copy_& attr) const
{
auto& parserContext = x3::get<parser_context_tag>(ctx);
auto iterBeforeDestination = begin;
auto save_iter = x3::no_skip[x3::eps[([&iterBeforeDestination](auto& ctx) {iterBeforeDestination = _where(ctx).begin();})]];
auto grammar = datastoreSuggestions > copy_source > space_separator > datastoreSuggestions > save_iter > copy_destination;
try {
grammar.parse(begin, end, ctx, rctx, attr);
} catch (x3::expectation_failure<It>& ex) {
using namespace std::string_literals;
parserContext.m_errorMsg = "Expected "s + ex.which() + " here:";
throw;
}
if (attr.m_source == attr.m_destination) {
begin = iterBeforeDestination; // Restoring the iterator here makes the error caret point to the second datastore
parserContext.m_errorMsg = "Source datastore and destination datastore can't be the same.";
return false;
}
return true;
}
} copy_args;
auto const copy_def =
copy_::name > space_separator > copy_args;
auto const describe_def =
describe_::name >> space_separator > (dataPathListEnd | anyPath);
struct mode_table : x3::symbols<MoveMode> {
mode_table()
{
add
("after", MoveMode::After)
("before", MoveMode::Before)
("begin", MoveMode::Begin)
("end", MoveMode::End);
}
} const mode_table;
struct move_absolute_table : x3::symbols<yang::move::Absolute> {
move_absolute_table()
{
add
("begin", yang::move::Absolute::Begin)
("end", yang::move::Absolute::End);
}
} const move_absolute_table;
struct move_relative_table : x3::symbols<yang::move::Relative::Position> {
move_relative_table()
{
add
("before", yang::move::Relative::Position::Before)
("after", yang::move::Relative::Position::After);
}
} const move_relative_table;
struct move_args : x3::parser<move_args> {
using attribute_type = move_;
template <typename It, typename Ctx, typename RCtx>
bool parse(It& begin, It end, Ctx const& ctx, RCtx& rctx, move_& attr) const
{
ParserContext& parserContext = x3::get<parser_context_tag>(ctx);
dataPath_ movePath;
auto movePathGrammar = listInstancePath | leafListElementPath;
auto res = movePathGrammar.parse(begin, end, ctx, rctx, attr.m_source);
if (!res) {
parserContext.m_errorMsg = "Expected source path here:";
return false;
}
// Try absolute move first.
res = (space_separator >> move_absolute_table).parse(begin, end, ctx, rctx, attr.m_destination);
if (res) {
// Absolute move parsing succeeded, we don't need to parse anything else.
return true;
}
// If absolute move didn't succeed, try relative.
attr.m_destination = yang::move::Relative{};
res = (space_separator >> move_relative_table).parse(begin, end, ctx, rctx, std::get<yang::move::Relative>(attr.m_destination).m_position);
if (!res) {
parserContext.m_errorMsg = "Expected a move position (begin, end, before, after) here:";
return false;
}
if (std::holds_alternative<leafListElement_>(attr.m_source.m_nodes.back().m_suffix)) {
leaf_data_ value;
res = (space_separator >> leaf_data).parse(begin, end, ctx, rctx, value);
if (res) {
std::get<yang::move::Relative>(attr.m_destination).m_path = {{".", value}};
}
} else {
ListInstance listInstance;
// The source list instance will be stored inside the parser context path.
// The source list instance will be full data path (with keys included).
// However, m_tmpListPath is supposed to store a path with a list without the keys.
// So, I pop the last listElement_ (which has the keys) and put in a list_ (which doesn't have the keys).
// Example: /mod:cont/protocols[name='ftp'] gets turned into /mod:cont/protocols
parserContext.m_tmpListPath = parserContext.currentDataPath();
parserContext.m_tmpListPath.m_nodes.pop_back();
auto list = list_{std::get<listElement_>(attr.m_source.m_nodes.back().m_suffix).m_name};
parserContext.m_tmpListPath.m_nodes.push_back(dataNode_{attr.m_source.m_nodes.back().m_prefix, list});
res = (space_separator >> listSuffix).parse(begin, end, ctx, rctx, listInstance);
if (res) {
std::get<yang::move::Relative>(attr.m_destination).m_path = listInstance;
}
}
if (!res) {
parserContext.m_errorMsg = "Expected a destination here:";
}
return res;
}
} const move_args;
auto const move_def =
move_::name >> space_separator >> move_args;
struct format_table : x3::symbols<DataFormat> {
format_table()
{
add
("xml", DataFormat::Xml)
("json", DataFormat::Json);
}
} const format_table;
auto const dump_def =
dump_::name >> space_separator >> format_table;
auto const createCommandSuggestions_def =
x3::eps;
auto const command_def =
createCommandSuggestions >> x3::expect[cd | copy | create | delete_rule | set | commit | get | ls | discard | describe | help | move | dump];
#if __clang__
#pragma GCC diagnostic pop
#endif
BOOST_SPIRIT_DEFINE(set)
BOOST_SPIRIT_DEFINE(commit)
BOOST_SPIRIT_DEFINE(get)
BOOST_SPIRIT_DEFINE(ls)
BOOST_SPIRIT_DEFINE(discard)
BOOST_SPIRIT_DEFINE(cd)
BOOST_SPIRIT_DEFINE(create)
BOOST_SPIRIT_DEFINE(delete_rule)
BOOST_SPIRIT_DEFINE(describe)
BOOST_SPIRIT_DEFINE(help)
BOOST_SPIRIT_DEFINE(copy)
BOOST_SPIRIT_DEFINE(move)
BOOST_SPIRIT_DEFINE(dump)
BOOST_SPIRIT_DEFINE(command)
BOOST_SPIRIT_DEFINE(createCommandSuggestions)