blob: 735700afaaec309144ffc2434f24314f480c105a [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/mpl/for_each.hpp>
#include <boost/spirit/home/x3.hpp>
#include <boost/spirit/home/x3/support/utility/error_reporting.hpp>
#include "ast_commands.hpp"
#include "parser_context.hpp"
#include "schema.hpp"
#include "utils.hpp"
namespace x3 = boost::spirit::x3;
struct parser_context_tag;
struct keyValue_class {
template <typename T, typename Iterator, typename Context>
void on_success(Iterator const&, Iterator const&, T& ast, Context const& context)
{
auto& parserContext = x3::get<parser_context_tag>(context);
if (parserContext.m_tmpListKeys.find(ast.first) != parserContext.m_tmpListKeys.end()) {
_pass(context) = false;
parserContext.m_errorMsg = "Key \"" + ast.first + "\" was entered more than once.";
} else {
parserContext.m_tmpListKeys.insert({ast.first, ast.second});
}
}
template <typename Iterator, typename Exception, typename Context>
x3::error_handler_result on_error(Iterator&, Iterator const&, Exception const&, Context const& context)
{
auto& parserContext = x3::get<parser_context_tag>(context);
parserContext.m_errorMsg = "Error parsing key values here:";
return x3::error_handler_result::rethrow;
}
};
struct node_identifier_class {
template <typename T, typename Iterator, typename Context>
void on_success(Iterator const&, Iterator const&, T&, Context const& context)
{
auto& parserContext = x3::get<parser_context_tag>(context);
if (!parserContext.m_topLevelModulePresent) {
if (parserContext.m_errorMsg.empty())
parserContext.m_errorMsg = "You have to specify a top level module.";
_pass(context) = false;
}
}
};
struct key_identifier_class {
template <typename T, typename Iterator, typename Context>
void on_success(Iterator const&, Iterator const&, T& ast, Context const& context)
{
auto& parserContext = x3::get<parser_context_tag>(context);
const Schema& schema = parserContext.m_schema;
schemaPath_ location = parserContext.currentSchemaPath();
ModuleNodePair list{parserContext.m_curModule, parserContext.m_tmpListName};
if (schema.listHasKey(location, list, ast)) {
schemaNode_ listNode;
listNode.m_prefix = parserContext.m_curModule.flat_map([] (auto mod) { return boost::optional<module_>{{mod}}; });;
listNode.m_suffix = list_{parserContext.m_tmpListName};
location.m_nodes.push_back(listNode);
parserContext.m_tmpListKeyLeafPath.m_location = location;
parserContext.m_tmpListKeyLeafPath.m_node = { parserContext.m_curModule, ast };
} else {
parserContext.m_errorMsg = parserContext.m_tmpListName + " is not indexed by \"" + ast + "\".";
_pass(context) = false;
}
}
};
struct module_identifier_class;
struct listSuffix_class {
template <typename T, typename Iterator, typename Context>
void on_success(Iterator const&, Iterator const&, T& ast, Context const& context)
{
auto& parserContext = x3::get<parser_context_tag>(context);
const Schema& schema = parserContext.m_schema;
const auto& keysNeeded = schema.listKeys(parserContext.currentSchemaPath(), {parserContext.m_curModule, parserContext.m_tmpListName});
std::set<std::string> keysSupplied;
for (const auto& it : ast)
keysSupplied.insert(it.first);
if (keysNeeded != keysSupplied) {
parserContext.m_errorMsg = "Not enough keys for " + parserContext.m_tmpListName + ". " +
"These keys were not supplied:";
std::set<std::string> missingKeys;
std::set_difference(keysNeeded.begin(), keysNeeded.end(),
keysSupplied.begin(), keysSupplied.end(),
std::inserter(missingKeys, missingKeys.end()));
for (const auto& it : missingKeys)
parserContext.m_errorMsg += " " + it;
parserContext.m_errorMsg += ".";
_pass(context) = false;
}
}
template <typename Iterator, typename Exception, typename Context>
x3::error_handler_result on_error(Iterator&, Iterator const&, Exception const&, Context const& context)
{
auto& parserContext = x3::get<parser_context_tag>(context);
if (parserContext.m_errorMsg.empty())
parserContext.m_errorMsg = "Expecting ']' here:";
return x3::error_handler_result::rethrow;
}
};
struct module_class {
template <typename T, typename Iterator, typename Context>
void on_success(Iterator const&, Iterator const&, T& ast, Context const& context)
{
auto& parserContext = x3::get<parser_context_tag>(context);
const auto& schema = parserContext.m_schema;
if (schema.isModule(ast.m_name)) {
parserContext.m_curModule = ast.m_name;
parserContext.m_topLevelModulePresent = true;
} else {
parserContext.m_errorMsg = "Invalid module name.";
_pass(context) = false;
}
}
};
struct absoluteStart_class {
template <typename T, typename Iterator, typename Context>
void on_success(Iterator const&, Iterator const&, T&, Context const& context)
{
auto& parserContext = x3::get<parser_context_tag>(context);
parserContext.clearPath();
}
};
struct discard_class;
struct ls_class;
struct cd_class {
template <typename Iterator, typename Exception, typename Context>
x3::error_handler_result on_error(Iterator&, Iterator const&, Exception const& x, Context const& context)
{
auto& parserContext = x3::get<parser_context_tag>(context);
if (parserContext.m_errorMsg.empty())
parserContext.m_errorMsg = "Expected " + x.which() + " here:";
return x3::error_handler_result::rethrow;
}
};
struct presenceContainerPath_class {
template <typename T, typename Iterator, typename Context>
void on_success(Iterator const&, Iterator const&, T& ast, Context const& context)
{
auto& parserContext = x3::get<parser_context_tag>(context);
const auto& schema = parserContext.m_schema;
try {
boost::optional<std::string> module;
if (ast.m_nodes.back().m_prefix)
module = ast.m_nodes.back().m_prefix.value().m_name;
container_ cont = boost::get<container_>(ast.m_nodes.back().m_suffix);
auto location = pathWithoutLastNode(parserContext.currentSchemaPath());
if (!schema.isPresenceContainer(location, {module, cont.m_name})) {
parserContext.m_errorMsg = "This container is not a presence container.";
_pass(context) = false;
}
} catch (boost::bad_get&) {
parserContext.m_errorMsg = "This is not a container.";
_pass(context) = false;
}
}
};
struct listInstancePath_class {
template <typename T, typename Iterator, typename Context>
void on_success(Iterator const&, Iterator const&, T& ast, Context const& context)
{
auto& parserContext = x3::get<parser_context_tag>(context);
if (ast.m_nodes.back().m_suffix.type() != typeid(listElement_)) {
parserContext.m_errorMsg = "This is not a list instance.";
_pass(context) = false;
}
}
};
struct space_separator_class {
template <typename T, typename Iterator, typename Context>
void on_success(Iterator const&, Iterator const&, T&, Context const& context)
{
auto& parserContext = x3::get<parser_context_tag>(context);
parserContext.m_suggestions.clear();
parserContext.m_completionIterator = boost::none;
}
};
struct create_class {
template <typename Iterator, typename Exception, typename Context>
x3::error_handler_result on_error(Iterator&, Iterator const&, Exception const&, Context const& context)
{
auto& parserContext = x3::get<parser_context_tag>(context);
if (parserContext.m_errorMsg.empty())
parserContext.m_errorMsg = "Couldn't parse create/delete command.";
return x3::error_handler_result::rethrow;
}
};
struct delete_class {
template <typename Iterator, typename Exception, typename Context>
x3::error_handler_result on_error(Iterator&, Iterator const&, Exception const&, Context const& context)
{
auto& parserContext = x3::get<parser_context_tag>(context);
if (parserContext.m_errorMsg.empty())
parserContext.m_errorMsg = "Couldn't parse create/delete command.";
return x3::error_handler_result::rethrow;
}
};
struct leaf_path_class {
template <typename T, typename Iterator, typename Context>
void on_success(Iterator const&, Iterator const&, T&, Context const& context)
{
auto& parserContext = x3::get<parser_context_tag>(context);
try {
auto lastNode = parserContext.currentSchemaPath().m_nodes.back();
auto leaf = boost::get<leaf_>(lastNode.m_suffix);
auto location = pathWithoutLastNode(parserContext.currentSchemaPath());
ModuleNodePair node{lastNode.m_prefix.flat_map([](const auto& it) { return boost::optional<std::string>{it.m_name}; }), leaf.m_name};
parserContext.m_tmpListKeyLeafPath.m_location = location;
parserContext.m_tmpListKeyLeafPath.m_node = node;
} catch (boost::bad_get&) {
parserContext.m_errorMsg = "This is not a path to leaf.";
_pass(context) = false;
}
}
};
// This handler only checks if the module exists
// It doesn't set any ParserContext flags (except the error message)
struct data_module_prefix_class {
template <typename T, typename Iterator, typename Context>
void on_success(Iterator const&, Iterator const&, T& ast, Context const& context)
{
auto& parserContext = x3::get<parser_context_tag>(context);
const auto& schema = parserContext.m_schema;
if (!schema.isModule(parserContext.currentSchemaPath(), ast.m_name)) {
parserContext.m_errorMsg = "Invalid module name.";
_pass(context) = false;
}
}
};
struct set_class {
template <typename Iterator, typename Exception, typename Context>
x3::error_handler_result on_error(Iterator&, Iterator const&, Exception const& x, Context const& context)
{
auto& parserContext = x3::get<parser_context_tag>(context);
if (parserContext.m_errorMsg.empty())
parserContext.m_errorMsg = "Expected " + x.which() + " here:";
return x3::error_handler_result::rethrow;
}
};
struct commit_class;
struct describe_class;
struct help_class;
struct get_class;
struct copy_class;
struct command_class {
template <typename Iterator, typename Exception, typename Context>
x3::error_handler_result on_error(Iterator&, Iterator const&, Exception const& x, Context const& context)
{
auto& parserContext = x3::get<parser_context_tag>(context);
auto& error_handler = x3::get<x3::error_handler_tag>(context).get();
if (parserContext.m_errorMsg.empty()) {
parserContext.m_errorMsg = "Unknown command.";
}
error_handler(x.where(), parserContext.m_errorMsg);
return x3::error_handler_result::fail;
}
};
struct initializePath_class {
template <typename T, typename Iterator, typename Context>
void on_success(Iterator const&, Iterator const&, T&, Context const& context)
{
auto& parserContext = x3::get<parser_context_tag>(context);
parserContext.resetPath();
parserContext.m_tmpListKeys.clear();
parserContext.m_tmpListName.clear();
parserContext.m_suggestions.clear();
}
};
struct trailingSlash_class;
std::set<Completion> generateMissingKeyCompletionSet(std::set<std::string> keysNeeded, std::map<std::string, leaf_data_> currentSet);
struct createKeySuggestions_class {
template <typename T, typename Iterator, typename Context>
void on_success(Iterator const& begin, Iterator const&, T&, Context const& context)
{
auto& parserContext = x3::get<parser_context_tag>(context);
const auto& schema = parserContext.m_schema;
parserContext.m_completionIterator = begin;
const auto& keysNeeded = schema.listKeys(parserContext.currentSchemaPath(), {parserContext.m_curModule, parserContext.m_tmpListName});
parserContext.m_suggestions = generateMissingKeyCompletionSet(keysNeeded, parserContext.m_tmpListKeys);
}
};
std::string leafDataToCompletion(const leaf_data_& value);
struct createValueSuggestions_class {
template <typename T, typename Iterator, typename Context>
void on_success(Iterator const& begin, Iterator const&, T&, Context const& context)
{
auto& parserContext = x3::get<parser_context_tag>(context);
if (!parserContext.m_completing) {
return;
}
const auto& dataQuery = parserContext.m_dataquery;
parserContext.m_completionIterator = begin;
auto listInstances = dataQuery->listKeys(parserContext.currentDataPath(), {parserContext.m_curModule, parserContext.m_tmpListName});
decltype(listInstances) filteredInstances;
//This filters out instances, which don't correspond to the partial instance we have.
const auto partialFitsComplete = [&parserContext] (const auto& complete) {
const auto& partial = parserContext.m_tmpListKeys;
return std::all_of(partial.begin(), partial.end(), [&complete] (const auto& oneKV) {
const auto& [k, v] = oneKV;
return complete.at(k) == v;
});
};
std::copy_if(listInstances.begin(), listInstances.end(), std::inserter(filteredInstances, filteredInstances.end()), partialFitsComplete);
std::set<Completion> validValues;
std::transform(filteredInstances.begin(), filteredInstances.end(), std::inserter(validValues, validValues.end()), [&parserContext](const auto& instance) {
return Completion{leafDataToCompletion(instance.at(parserContext.m_tmpListKeyLeafPath.m_node.second))};
});
parserContext.m_suggestions = validValues;
}
};
struct suggestKeysEnd_class {
template <typename T, typename Iterator, typename Context>
void on_success(Iterator const& begin, Iterator const&, T&, Context const& context)
{
auto& parserContext = x3::get<parser_context_tag>(context);
const auto& schema = parserContext.m_schema;
parserContext.m_completionIterator = begin;
const auto& keysNeeded = schema.listKeys(parserContext.currentSchemaPath(), {parserContext.m_curModule, parserContext.m_tmpListName});
if (generateMissingKeyCompletionSet(keysNeeded, parserContext.m_tmpListKeys).empty()) {
parserContext.m_suggestions = {Completion{"]/"}};
} else {
parserContext.m_suggestions = {Completion{"]["}};
}
}
};
struct commandNamesVisitor {
template <typename T>
std::string operator()(boost::type<T>)
{
return T::name;
}
};
struct createCommandSuggestions_class {
template <typename T, typename Iterator, typename Context>
void on_success(Iterator const& begin, Iterator const&, T&, Context const& context)
{
auto& parserContext = x3::get<parser_context_tag>(context);
parserContext.m_completionIterator = begin;
parserContext.m_suggestions.clear();
boost::mpl::for_each<CommandTypes, boost::type<boost::mpl::_>>([&parserContext](auto cmd) {
parserContext.m_suggestions.insert({commandNamesVisitor()(cmd), " "});
});
}
};
struct completing_class {
template <typename T, typename Iterator, typename Context>
void on_success(Iterator const&, Iterator const&, T&, Context const& context)
{
auto& parserContext = x3::get<parser_context_tag>(context);
if (!parserContext.m_completing)
_pass(context) = false;
}
};