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Václav Kubernát0a2a2e82018-05-11 13:59:12 +02001/*
2 * Copyright (C) 2018 CESNET, https://photonics.cesnet.cz/
3 * Copyright (C) 2018 FIT CVUT, https://fit.cvut.cz/
4 *
5 * Written by Václav Kubernát <kubervac@fit.cvut.cz>
6 *
7*/
8
9#pragma once
Václav Kubernát195eeea2018-05-18 13:52:36 +020010
Václav Kubernát57272422019-02-08 12:48:24 +010011#include <boost/mpl/for_each.hpp>
Václav Kubernát509ce652019-05-29 19:46:44 +020012#include <boost/spirit/home/x3.hpp>
13#include <boost/spirit/home/x3/support/utility/error_reporting.hpp>
14
15
Václav Kubernát57272422019-02-08 12:48:24 +010016#include "ast_commands.hpp"
Václav Kubernát4294a852020-02-14 15:07:14 +010017#include "parser_context.hpp"
Václav Kubernát48fc3832018-05-28 14:21:22 +020018#include "schema.hpp"
Václav Kubernátebca2552018-06-08 19:06:02 +020019#include "utils.hpp"
Václav Kubernát329c6c32019-02-06 16:41:53 +010020namespace x3 = boost::spirit::x3;
21
22struct parser_context_tag;
Václav Kubernát0a2a2e82018-05-11 13:59:12 +020023
Václav Kubernát0a2a2e82018-05-11 13:59:12 +020024struct keyValue_class {
25 template <typename T, typename Iterator, typename Context>
26 void on_success(Iterator const&, Iterator const&, T& ast, Context const& context)
27 {
28 auto& parserContext = x3::get<parser_context_tag>(context);
Václav Kubernát0a2a2e82018-05-11 13:59:12 +020029
30 if (parserContext.m_tmpListKeys.find(ast.first) != parserContext.m_tmpListKeys.end()) {
31 _pass(context) = false;
32 parserContext.m_errorMsg = "Key \"" + ast.first + "\" was entered more than once.";
Václav Kubernát41378452018-06-06 16:29:40 +020033 } else {
Václav Kubernát43908fb2020-01-02 19:05:51 +010034 parserContext.m_tmpListKeys.insert({ast.first, ast.second});
Václav Kubernát0a2a2e82018-05-11 13:59:12 +020035 }
36 }
Václav Kubernát41378452018-06-06 16:29:40 +020037
38 template <typename Iterator, typename Exception, typename Context>
39 x3::error_handler_result on_error(Iterator&, Iterator const&, Exception const&, Context const& context)
40 {
41 auto& parserContext = x3::get<parser_context_tag>(context);
42 parserContext.m_errorMsg = "Error parsing key values here:";
43 return x3::error_handler_result::rethrow;
44 }
Václav Kubernát0a2a2e82018-05-11 13:59:12 +020045};
Václav Kubernát41378452018-06-06 16:29:40 +020046
Václav Kubernátf3e377b2020-05-28 23:26:38 +020047struct node_identifier_class;
Václav Kubernát744f57f2018-06-29 22:46:26 +020048
Václav Kubernát2db124c2020-05-28 21:58:36 +020049boost::optional<std::string> optModuleToOptString(const boost::optional<module_> module);
50
Václav Kubernát7707cae2020-01-16 12:04:53 +010051struct key_identifier_class {
52 template <typename T, typename Iterator, typename Context>
53 void on_success(Iterator const&, Iterator const&, T& ast, Context const& context)
54 {
Václav Kubernát2db124c2020-05-28 21:58:36 +020055 ParserContext& parserContext = x3::get<parser_context_tag>(context);
Václav Kubernát7707cae2020-01-16 12:04:53 +010056 const Schema& schema = parserContext.m_schema;
Václav Kubernát7707cae2020-01-16 12:04:53 +010057
Václav Kubernát2db124c2020-05-28 21:58:36 +020058 if (schema.listHasKey(dataPathToSchemaPath(parserContext.m_tmpListPath), ast)) {
59 parserContext.m_tmpListKeyLeafPath.m_location = dataPathToSchemaPath(parserContext.m_tmpListPath);
60 parserContext.m_tmpListKeyLeafPath.m_node = { optModuleToOptString(parserContext.m_tmpListPath.m_nodes.back().m_prefix), ast };
Václav Kubernát7707cae2020-01-16 12:04:53 +010061 } else {
Václav Kubernát2db124c2020-05-28 21:58:36 +020062 auto listName = std::get<list_>(parserContext.m_tmpListPath.m_nodes.back().m_suffix).m_name;
63 parserContext.m_errorMsg = listName + " is not indexed by \"" + ast + "\".";
Václav Kubernát7707cae2020-01-16 12:04:53 +010064 _pass(context) = false;
65 }
66 }
67};
Václav Kubernát89728d82018-09-13 16:28:28 +020068
Václav Kubernát744f57f2018-06-29 22:46:26 +020069struct module_identifier_class;
Václav Kubernát0a2a2e82018-05-11 13:59:12 +020070
Václav Kubernát0a2a2e82018-05-11 13:59:12 +020071struct listSuffix_class {
72 template <typename T, typename Iterator, typename Context>
73 void on_success(Iterator const&, Iterator const&, T& ast, Context const& context)
74 {
75 auto& parserContext = x3::get<parser_context_tag>(context);
Václav Kubernát48fc3832018-05-28 14:21:22 +020076 const Schema& schema = parserContext.m_schema;
Václav Kubernát0a2a2e82018-05-11 13:59:12 +020077
Václav Kubernát2db124c2020-05-28 21:58:36 +020078 const auto& keysNeeded = schema.listKeys(dataPathToSchemaPath(parserContext.m_tmpListPath));
Václav Kubernát0a2a2e82018-05-11 13:59:12 +020079 std::set<std::string> keysSupplied;
80 for (const auto& it : ast)
81 keysSupplied.insert(it.first);
82
83 if (keysNeeded != keysSupplied) {
Václav Kubernát2db124c2020-05-28 21:58:36 +020084 auto listName = std::get<list_>(parserContext.m_tmpListPath.m_nodes.back().m_suffix).m_name;
85 parserContext.m_errorMsg = "Not enough keys for " + listName + ". " +
Václav Kubernát0a2a2e82018-05-11 13:59:12 +020086 "These keys were not supplied:";
87 std::set<std::string> missingKeys;
88 std::set_difference(keysNeeded.begin(), keysNeeded.end(),
89 keysSupplied.begin(), keysSupplied.end(),
90 std::inserter(missingKeys, missingKeys.end()));
91
92 for (const auto& it : missingKeys)
93 parserContext.m_errorMsg += " " + it;
94 parserContext.m_errorMsg += ".";
95
96 _pass(context) = false;
97 }
98 }
Václav Kubernát41378452018-06-06 16:29:40 +020099
100 template <typename Iterator, typename Exception, typename Context>
101 x3::error_handler_result on_error(Iterator&, Iterator const&, Exception const&, Context const& context)
102 {
103 auto& parserContext = x3::get<parser_context_tag>(context);
104 if (parserContext.m_errorMsg.empty())
105 parserContext.m_errorMsg = "Expecting ']' here:";
106 return x3::error_handler_result::rethrow;
Václav Kubernát41378452018-06-06 16:29:40 +0200107 }
Václav Kubernát0a2a2e82018-05-11 13:59:12 +0200108};
Václav Kubernát744f57f2018-06-29 22:46:26 +0200109
Václav Kubernát744f57f2018-06-29 22:46:26 +0200110struct module_class {
111 template <typename T, typename Iterator, typename Context>
112 void on_success(Iterator const&, Iterator const&, T& ast, Context const& context)
113 {
114 auto& parserContext = x3::get<parser_context_tag>(context);
115 const auto& schema = parserContext.m_schema;
116
Václav Kubernát1bcee3b2020-05-28 22:19:59 +0200117 if (!schema.isModule(ast.m_name)) {
Václav Kubernát744f57f2018-06-29 22:46:26 +0200118 parserContext.m_errorMsg = "Invalid module name.";
Václav Kubernát07204242018-06-04 18:12:09 +0200119 _pass(context) = false;
120 }
121 }
122};
123
Václav Kubernát37171a12018-08-31 17:01:48 +0200124struct absoluteStart_class {
125 template <typename T, typename Iterator, typename Context>
126 void on_success(Iterator const&, Iterator const&, T&, Context const& context)
127 {
128 auto& parserContext = x3::get<parser_context_tag>(context);
Václav Kubernát72749c62020-01-03 16:47:34 +0100129 parserContext.clearPath();
Václav Kubernát37171a12018-08-31 17:01:48 +0200130 }
131};
132
Václav Kubernát6d791432018-10-25 16:00:35 +0200133struct discard_class;
Václav Kubernát0a2a2e82018-05-11 13:59:12 +0200134
Václav Kubernát11afac72018-07-18 14:59:53 +0200135struct ls_class;
136
Václav Kubernát744f57f2018-06-29 22:46:26 +0200137struct cd_class {
Václav Kubernát0a2a2e82018-05-11 13:59:12 +0200138 template <typename Iterator, typename Exception, typename Context>
139 x3::error_handler_result on_error(Iterator&, Iterator const&, Exception const& x, Context const& context)
140 {
141 auto& parserContext = x3::get<parser_context_tag>(context);
Václav Kubernát41378452018-06-06 16:29:40 +0200142 if (parserContext.m_errorMsg.empty())
143 parserContext.m_errorMsg = "Expected " + x.which() + " here:";
144 return x3::error_handler_result::rethrow;
Václav Kubernát0a2a2e82018-05-11 13:59:12 +0200145 }
146};
Václav Kubernátb61336d2018-05-28 17:35:03 +0200147
Václav Kubernát6797df02019-03-18 20:21:50 +0100148struct presenceContainerPath_class {
Václav Kubernátb61336d2018-05-28 17:35:03 +0200149 template <typename T, typename Iterator, typename Context>
150 void on_success(Iterator const&, Iterator const&, T& ast, Context const& context)
151 {
152 auto& parserContext = x3::get<parser_context_tag>(context);
153 const auto& schema = parserContext.m_schema;
Václav Kubernát0d42c512020-05-20 21:18:39 +0200154 if (ast.m_nodes.empty()) {
155 parserContext.m_errorMsg = "This container is not a presence container.";
156 _pass(context) = false;
157 return;
158 }
159
Václav Kubernáte811bfa2020-05-29 02:25:20 +0200160 if (schema.nodeType(pathToSchemaString(parserContext.currentSchemaPath(), Prefixes::Always)) != yang::NodeTypes::PresenceContainer) {
161 parserContext.m_errorMsg = "This container is not a presence container.";
Václav Kubernátb61336d2018-05-28 17:35:03 +0200162 _pass(context) = false;
Václav Kubernátb61336d2018-05-28 17:35:03 +0200163 }
164 }
Václav Kubernát6797df02019-03-18 20:21:50 +0100165};
Václav Kubernátb61336d2018-05-28 17:35:03 +0200166
Václav Kubernátf5f64f02019-03-19 17:15:47 +0100167struct listInstancePath_class {
168 template <typename T, typename Iterator, typename Context>
169 void on_success(Iterator const&, Iterator const&, T& ast, Context const& context)
170 {
171 auto& parserContext = x3::get<parser_context_tag>(context);
Václav Kubernát2ebab1d2020-05-27 01:28:30 +0200172 if (ast.m_nodes.empty() || !std::holds_alternative<listElement_>(ast.m_nodes.back().m_suffix)) {
Václav Kubernátf5f64f02019-03-19 17:15:47 +0100173 parserContext.m_errorMsg = "This is not a list instance.";
174 _pass(context) = false;
175 }
176 }
177};
178
Václav Kubernát5b8a8f32020-05-20 00:57:22 +0200179struct leafListElementPath_class {
180 template <typename T, typename Iterator, typename Context>
181 void on_success(Iterator const&, Iterator const&, T& ast, Context const& context)
182 {
183 auto& parserContext = x3::get<parser_context_tag>(context);
Václav Kubernátb5ca1542020-05-27 01:03:54 +0200184 if (ast.m_nodes.empty() || !std::holds_alternative<leafListElement_>(ast.m_nodes.back().m_suffix)) {
Václav Kubernát5b8a8f32020-05-20 00:57:22 +0200185 parserContext.m_errorMsg = "This is not a leaf list element.";
186 _pass(context) = false;
187 }
188 }
189};
190
Václav Kubernát8028f942019-09-25 16:03:23 +0200191struct space_separator_class {
192 template <typename T, typename Iterator, typename Context>
193 void on_success(Iterator const&, Iterator const&, T&, Context const& context)
194 {
195 auto& parserContext = x3::get<parser_context_tag>(context);
196 parserContext.m_suggestions.clear();
Václav Kubernát1ed4aa32020-01-23 13:13:28 +0100197 parserContext.m_completionIterator = boost::none;
Václav Kubernát8028f942019-09-25 16:03:23 +0200198 }
199};
200
Václav Kubernát6797df02019-03-18 20:21:50 +0100201struct create_class {
Václav Kubernátb61336d2018-05-28 17:35:03 +0200202 template <typename Iterator, typename Exception, typename Context>
Václav Kubernát41378452018-06-06 16:29:40 +0200203 x3::error_handler_result on_error(Iterator&, Iterator const&, Exception const&, Context const& context)
Václav Kubernátb61336d2018-05-28 17:35:03 +0200204 {
205 auto& parserContext = x3::get<parser_context_tag>(context);
Václav Kubernát41378452018-06-06 16:29:40 +0200206 if (parserContext.m_errorMsg.empty())
207 parserContext.m_errorMsg = "Couldn't parse create/delete command.";
208 return x3::error_handler_result::rethrow;
Václav Kubernátb61336d2018-05-28 17:35:03 +0200209 }
210};
211
Václav Kubernát6797df02019-03-18 20:21:50 +0100212struct delete_class {
213 template <typename Iterator, typename Exception, typename Context>
214 x3::error_handler_result on_error(Iterator&, Iterator const&, Exception const&, Context const& context)
215 {
216 auto& parserContext = x3::get<parser_context_tag>(context);
217 if (parserContext.m_errorMsg.empty())
218 parserContext.m_errorMsg = "Couldn't parse create/delete command.";
219 return x3::error_handler_result::rethrow;
220 }
Václav Kubernátb61336d2018-05-28 17:35:03 +0200221};
222
Václav Kubernátabf52802020-05-19 01:31:17 +0200223struct writable_leaf_path_class {
Václav Kubernát0b0272f2018-06-13 14:13:08 +0200224 template <typename T, typename Iterator, typename Context>
Václav Kubernát7707cae2020-01-16 12:04:53 +0100225 void on_success(Iterator const&, Iterator const&, T&, Context const& context)
Václav Kubernát0b0272f2018-06-13 14:13:08 +0200226 {
227 auto& parserContext = x3::get<parser_context_tag>(context);
Václav Kubernát0d42c512020-05-20 21:18:39 +0200228 if (parserContext.currentSchemaPath().m_nodes.empty()) {
229 parserContext.m_errorMsg = "This is not a path to leaf.";
230 _pass(context) = false;
231 return;
232 }
233
Václav Kubernát0b0272f2018-06-13 14:13:08 +0200234 try {
Václav Kubernát7707cae2020-01-16 12:04:53 +0100235 auto lastNode = parserContext.currentSchemaPath().m_nodes.back();
Václav Kubernátb5ca1542020-05-27 01:03:54 +0200236 auto leaf = std::get<leaf_>(lastNode.m_suffix);
Václav Kubernát7707cae2020-01-16 12:04:53 +0100237 auto location = pathWithoutLastNode(parserContext.currentSchemaPath());
238 ModuleNodePair node{lastNode.m_prefix.flat_map([](const auto& it) { return boost::optional<std::string>{it.m_name}; }), leaf.m_name};
239
240 parserContext.m_tmpListKeyLeafPath.m_location = location;
241 parserContext.m_tmpListKeyLeafPath.m_node = node;
242
Václav Kubernátb5ca1542020-05-27 01:03:54 +0200243 } catch (std::bad_variant_access&) {
Václav Kubernát0b0272f2018-06-13 14:13:08 +0200244 parserContext.m_errorMsg = "This is not a path to leaf.";
245 _pass(context) = false;
246 }
247 }
248};
249
Václav Kubernát07204242018-06-04 18:12:09 +0200250struct set_class {
Václav Kubernát07204242018-06-04 18:12:09 +0200251 template <typename Iterator, typename Exception, typename Context>
252 x3::error_handler_result on_error(Iterator&, Iterator const&, Exception const& x, Context const& context)
253 {
254 auto& parserContext = x3::get<parser_context_tag>(context);
Václav Kubernát41378452018-06-06 16:29:40 +0200255 if (parserContext.m_errorMsg.empty())
256 parserContext.m_errorMsg = "Expected " + x.which() + " here:";
257 return x3::error_handler_result::rethrow;
Václav Kubernát07204242018-06-04 18:12:09 +0200258 }
259};
260
Václav Kubernát812ee282018-08-30 17:10:03 +0200261struct commit_class;
262
Václav Kubernát9cfcd872020-02-18 12:34:02 +0100263struct describe_class;
264
Václav Kubernát054cc992019-02-21 14:23:52 +0100265struct help_class;
266
Václav Kubernátb6ff0b62018-08-30 16:14:53 +0200267struct get_class;
268
Václav Kubernát7160a132020-04-03 02:11:01 +0200269struct copy_class;
270
Václav Kubernátb61336d2018-05-28 17:35:03 +0200271struct command_class {
272 template <typename Iterator, typename Exception, typename Context>
273 x3::error_handler_result on_error(Iterator&, Iterator const&, Exception const& x, Context const& context)
274 {
275 auto& parserContext = x3::get<parser_context_tag>(context);
276 auto& error_handler = x3::get<x3::error_handler_tag>(context).get();
Václav Kubernát41378452018-06-06 16:29:40 +0200277 if (parserContext.m_errorMsg.empty()) {
278 parserContext.m_errorMsg = "Unknown command.";
279 }
280 error_handler(x.where(), parserContext.m_errorMsg);
Václav Kubernátb61336d2018-05-28 17:35:03 +0200281 return x3::error_handler_result::fail;
282 }
283};
Václav Kubernát5c75b252018-10-10 18:33:47 +0200284
Václav Kubernát4108e0d2018-10-29 13:32:22 +0100285struct initializePath_class {
Václav Kubernát5c75b252018-10-10 18:33:47 +0200286 template <typename T, typename Iterator, typename Context>
287 void on_success(Iterator const&, Iterator const&, T&, Context const& context)
288 {
289 auto& parserContext = x3::get<parser_context_tag>(context);
Václav Kubernát72749c62020-01-03 16:47:34 +0100290 parserContext.resetPath();
Václav Kubernát5c75b252018-10-10 18:33:47 +0200291 parserContext.m_tmpListKeys.clear();
Václav Kubernát4108e0d2018-10-29 13:32:22 +0100292 parserContext.m_suggestions.clear();
Václav Kubernát5c75b252018-10-10 18:33:47 +0200293 }
294};
Václav Kubernátd6fd2492018-11-19 15:11:16 +0100295
296struct trailingSlash_class;
Václav Kubernát4108e0d2018-10-29 13:32:22 +0100297
Václav Kubernátc15fe822020-06-04 11:28:39 +0200298std::set<Completion> generateMissingKeyCompletionSet(std::set<std::string> keysNeeded, ListInstance currentSet);
Václav Kubernát329c6c32019-02-06 16:41:53 +0100299
300struct createKeySuggestions_class {
301 template <typename T, typename Iterator, typename Context>
302 void on_success(Iterator const& begin, Iterator const&, T&, Context const& context)
303 {
304 auto& parserContext = x3::get<parser_context_tag>(context);
305 const auto& schema = parserContext.m_schema;
306
307 parserContext.m_completionIterator = begin;
308
Václav Kubernát2db124c2020-05-28 21:58:36 +0200309 const auto& keysNeeded = schema.listKeys(dataPathToSchemaPath(parserContext.m_tmpListPath));
Václav Kubernát329c6c32019-02-06 16:41:53 +0100310 parserContext.m_suggestions = generateMissingKeyCompletionSet(keysNeeded, parserContext.m_tmpListKeys);
311 }
312};
313
Václav Kubernát43908fb2020-01-02 19:05:51 +0100314std::string leafDataToCompletion(const leaf_data_& value);
315
316struct createValueSuggestions_class {
317 template <typename T, typename Iterator, typename Context>
318 void on_success(Iterator const& begin, Iterator const&, T&, Context const& context)
319 {
320 auto& parserContext = x3::get<parser_context_tag>(context);
321 if (!parserContext.m_completing) {
322 return;
323 }
324 const auto& dataQuery = parserContext.m_dataquery;
325
326 parserContext.m_completionIterator = begin;
Václav Kubernát2db124c2020-05-28 21:58:36 +0200327 auto listInstances = dataQuery->listKeys(parserContext.m_tmpListPath);
Václav Kubernát43908fb2020-01-02 19:05:51 +0100328
329 decltype(listInstances) filteredInstances;
330 //This filters out instances, which don't correspond to the partial instance we have.
331 const auto partialFitsComplete = [&parserContext] (const auto& complete) {
332 const auto& partial = parserContext.m_tmpListKeys;
333 return std::all_of(partial.begin(), partial.end(), [&complete] (const auto& oneKV) {
334 const auto& [k, v] = oneKV;
335 return complete.at(k) == v;
336 });
337 };
338 std::copy_if(listInstances.begin(), listInstances.end(), std::inserter(filteredInstances, filteredInstances.end()), partialFitsComplete);
339
Václav Kubernátcb3af402020-02-12 16:49:17 +0100340 std::set<Completion> validValues;
Václav Kubernát43908fb2020-01-02 19:05:51 +0100341
Václav Kubernátcb3af402020-02-12 16:49:17 +0100342 std::transform(filteredInstances.begin(), filteredInstances.end(), std::inserter(validValues, validValues.end()), [&parserContext](const auto& instance) {
343 return Completion{leafDataToCompletion(instance.at(parserContext.m_tmpListKeyLeafPath.m_node.second))};
Václav Kubernát43908fb2020-01-02 19:05:51 +0100344 });
345
346 parserContext.m_suggestions = validValues;
347 }
348};
349
Václav Kubernát329c6c32019-02-06 16:41:53 +0100350struct suggestKeysEnd_class {
351 template <typename T, typename Iterator, typename Context>
352 void on_success(Iterator const& begin, Iterator const&, T&, Context const& context)
353 {
354 auto& parserContext = x3::get<parser_context_tag>(context);
355 const auto& schema = parserContext.m_schema;
356
357 parserContext.m_completionIterator = begin;
Václav Kubernát2db124c2020-05-28 21:58:36 +0200358 const auto& keysNeeded = schema.listKeys(dataPathToSchemaPath(parserContext.m_tmpListPath));
Václav Kubernát329c6c32019-02-06 16:41:53 +0100359 if (generateMissingKeyCompletionSet(keysNeeded, parserContext.m_tmpListKeys).empty()) {
Václav Kubernátcb3af402020-02-12 16:49:17 +0100360 parserContext.m_suggestions = {Completion{"]/"}};
Václav Kubernát329c6c32019-02-06 16:41:53 +0100361 } else {
Václav Kubernátcb3af402020-02-12 16:49:17 +0100362 parserContext.m_suggestions = {Completion{"]["}};
Václav Kubernát329c6c32019-02-06 16:41:53 +0100363 }
364 }
365};
Václav Kubernát57272422019-02-08 12:48:24 +0100366
Václav Kubernát672889c2020-05-27 04:11:36 +0200367template <typename T>
368std::string commandNamesVisitor (boost::type<T>)
369{
370 return T::name;
371}
Václav Kubernát57272422019-02-08 12:48:24 +0100372
373struct createCommandSuggestions_class {
374 template <typename T, typename Iterator, typename Context>
375 void on_success(Iterator const& begin, Iterator const&, T&, Context const& context)
376 {
377 auto& parserContext = x3::get<parser_context_tag>(context);
378 parserContext.m_completionIterator = begin;
379
380 parserContext.m_suggestions.clear();
381 boost::mpl::for_each<CommandTypes, boost::type<boost::mpl::_>>([&parserContext](auto cmd) {
Václav Kubernát672889c2020-05-27 04:11:36 +0200382 parserContext.m_suggestions.insert({commandNamesVisitor(cmd), " "});
Václav Kubernát57272422019-02-08 12:48:24 +0100383 });
384 }
385};
Václav Kubernátac035d62019-02-18 10:59:08 +0100386
387struct completing_class {
388 template <typename T, typename Iterator, typename Context>
389 void on_success(Iterator const&, Iterator const&, T&, Context const& context)
390 {
391 auto& parserContext = x3::get<parser_context_tag>(context);
392
393 if (!parserContext.m_completing)
394 _pass(context) = false;
395 }
396};