blob: bf00a7ee862d953a92255df6f48cc302d4cfd52e [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>
*
*/
#include <ostream>
#include "grammars.hpp"
#include "parser.hpp"
#include "parser_context.hpp"
#include "utils.hpp"
InvalidCommandException::~InvalidCommandException() = default;
Parser::Parser(const std::shared_ptr<const Schema> schema, const std::shared_ptr<const DataQuery> dataQuery)
: m_schema(schema)
, m_dataquery(dataQuery)
, m_curDir({Scope::Absolute, {}})
{
}
bool Completions::operator==(const Completions& b) const
{
return this->m_completions == b.m_completions && this->m_contextLength == b.m_contextLength;
}
command_ Parser::parseCommand(const std::string& line, std::ostream& errorStream)
{
command_ parsedCommand;
ParserContext ctx(*m_schema, nullptr, m_curDir);
auto it = line.begin();
boost::spirit::x3::error_handler<std::string::const_iterator> errorHandler(it, line.end(), errorStream);
auto grammar =
x3::with<parser_context_tag>(ctx)[
x3::with<x3::error_handler_tag>(std::ref(errorHandler))[command]
];
bool result = x3::phrase_parse(it, line.end(), grammar, x3::space, parsedCommand);
if (!result || it != line.end()) {
throw InvalidCommandException(std::string(it, line.end()) + " this was left of input");
}
return parsedCommand;
}
Completions Parser::completeCommand(const std::string& line, std::ostream& errorStream) const
{
std::set<std::string> completions;
command_ parsedCommand;
ParserContext ctx(*m_schema, m_dataquery, m_curDir);
ctx.m_completing = true;
auto it = line.begin();
boost::spirit::x3::error_handler<std::string::const_iterator> errorHandler(it, line.end(), errorStream);
auto grammar =
x3::with<parser_context_tag>(ctx)[
x3::with<x3::error_handler_tag>(std::ref(errorHandler))[command]
];
x3::phrase_parse(it, line.end(), grammar, x3::space, parsedCommand);
auto completionIterator = ctx.m_completionIterator ? *ctx.m_completionIterator : line.end();
int completionContext = line.end() - completionIterator;
auto filtered = filterByPrefix(ctx.m_suggestions, std::string(completionIterator, line.end()));
if (filtered.size() == 1) {
auto suffix = filtered.begin()->m_whenToAdd == Completion::WhenToAdd::Always
|| filtered.begin()->m_value == std::string{completionIterator, line.end()}
? filtered.begin()->m_suffix
: "";
return {{filtered.begin()->m_value + suffix}, completionContext};
}
std::set<std::string> res;
std::transform(filtered.begin(), filtered.end(), std::inserter(res, res.end()), [](auto it) { return it.m_value; });
return {res, completionContext};
}
void Parser::changeNode(const dataPath_& name)
{
if (name.m_scope == Scope::Absolute) {
m_curDir = name;
} else {
for (const auto& it : name.m_nodes) {
m_curDir.pushFragment(it);
}
}
}
std::string Parser::currentNode() const
{
return pathToDataString(m_curDir, Prefixes::WhenNeeded);
}
dataPath_ Parser::currentPath()
{
return m_curDir;
}