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clang-uml/src/sequence_diagram/model/diagram.h

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/**
* @file src/sequence_diagram/model/diagram.h
*
* Copyright (c) 2021-2024 Bartek Kryza <bkryza@gmail.com>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include "activity.h"
#include "common/model/diagram.h"
#include "common/types.h"
#include "config/config.h"
#include "participant.h"
#include <map>
#include <string>
namespace clanguml::sequence_diagram::model {
using message_chain_t = std::vector<sequence_diagram::model::message>;
/**
* @brief Model of a sequence diagram
*
* @embed{sequence_model_class.svg}
*/
class diagram : public clanguml::common::model::diagram {
public:
diagram() = default;
diagram(const diagram &) = delete;
diagram(diagram &&) = default;
diagram &operator=(const diagram &) = delete;
diagram &operator=(diagram &&) = default;
/**
* @brief Get the diagram model type - in this case sequence.
*
* @return Type of sequence diagram.
*/
common::model::diagram_t type() const override;
/**
* @brief Search for element in the diagram by fully qualified name.
*
* @param full_name Fully qualified element name.
* @return Optional reference to a diagram element.
*/
common::optional_ref<common::model::diagram_element> get(
const std::string &full_name) const override;
/**
* @brief Search for element in the diagram by id.
*
* @param id Element id.
* @return Optional reference to a diagram element.
*/
common::optional_ref<common::model::diagram_element> get(
eid_t id) const override;
/**
* @brief Get participant by id
*
* @param id Participant id.
* @return Optional reference to a diagram element.
*/
template <typename T>
common::optional_ref<T> get_participant(eid_t id) const
{
if (participants_.find(id) == participants_.end()) {
return {};
}
return common::optional_ref<T>(
dynamic_cast<T *>(participants_.at(id).get()));
}
/**
* @brief Add sequence diagram participant
*
* @param p Sequence diagram participant model
*/
void add_participant(std::unique_ptr<participant> p);
/**
* @brief Set participant with `id` as active
*
* @param id Id of participant to activate
*/
void add_active_participant(eid_t id);
/**
* @brief Check if diagram has activity identified by caller id
*
* @param id Caller id representing the activity
* @return True, if an activity already exists
*/
bool has_activity(eid_t id) const;
/**
* @brief Get reference to current activity of a participant
*
* @param id Participant id
* @return
*/
const activity &get_activity(eid_t id) const;
/**
* @brief Get reference to current activity of a participant
*
* @param id Participant id
* @return
*/
activity &get_activity(eid_t id);
/**
* @brief Add message to current activity
*
* @param message Message model
*/
void add_message(model::message &&message);
/**
* @brief Add block message to the current activity
*
* Block messages represent sequence diagram blocks such as `alt`
* or `loop`.
*
* The block messages can be stacked.
*
* @param message Message model
*/
void add_block_message(model::message &&message);
/**
* @brief End current block message
*
* @param message Message model
* @param start_type Type of block statement.
*/
void end_block_message(
model::message &&message, common::model::message_t start_type);
/**
* @brief Add `switch` block `case` statement
* @param m Message model
*/
void add_case_stmt_message(model::message &&m);
/**
* @brief Get all sequences in the diagram
*
* @return Map of sequences in the diagram
*/
std::map<eid_t, activity> &sequences();
/**
* @brief Get all sequences in the diagram
*
* @return Map of sequences in the diagram
*/
const std::map<eid_t, activity> &sequences() const;
/**
* @brief Get map of all participants in the diagram
*
* @return Map of participants in the diagram
*/
std::map<eid_t, std::unique_ptr<participant>> &participants();
/**
* @brief Get map of all participants in the diagram
*
* @return Map of participants in the diagram
*/
const std::map<eid_t, std::unique_ptr<participant>> &participants() const;
/**
* @brief Get all active participants in the diagram
*
* @return Set of all active participant ids
*/
std::set<eid_t> &active_participants();
/**
* @brief Get all active participants in the diagram
*
* @return Set of all active participant ids
*/
const std::set<eid_t> &active_participants() const;
/**
* @brief Convert element full name to PlantUML alias.
*
* @todo This method does not belong here - refactor to PlantUML specific
* code.
*
* @param full_name Full name of the diagram element.
* @return PlantUML alias.
*/
std::string to_alias(const std::string &full_name) const;
/**
* @brief Return the elements JSON context for inja templates.
*
* @return JSON node with elements context.
*/
inja::json context() const override;
/**
* @brief Debug method for printing entire diagram to console.
*/
void print() const;
// Implicitly import should_include overloads from base class
using common::model::diagram::should_include;
/**
* @brief Convenience `should_include` overload for participant
* @param p Participant model
* @return True, if the participant should be included in the diagram
*/
bool should_include(const sequence_diagram::model::participant &p) const;
/**
* @brief Get list of all possible 'from' values in the model
*
* @return List of all possible 'from' values
*/
std::vector<std::string> list_from_values() const;
/**
* @brief Get list of all possible 'to' values in the model
*
* @return List of all possible 'to' values
*/
std::vector<std::string> list_to_values() const;
/**
* @brief Generate a list of message chains matching a from_to constraint
*
* If 'from_activity' is 0, this method will return all message chains
* ending in 'to_activity'.
*
* @param from_activity Source activity for from_to message chain
* @param to_activity Target activity for from_to message chain
* @return List of message chains
*/
std::vector<message_chain_t> get_all_from_to_message_chains(
eid_t from_activity, eid_t to_activity) const;
/**
* @brief Get id of a 'to' activity
*
* @param to_location Target activity
* @return Activity id
*/
std::optional<eid_t> get_to_activity_id(
const config::source_location &to_location) const;
/**
* @brief Get id of a 'from' activity
*
* @param from_location Source activity
* @return Activity id
*/
std::optional<eid_t> get_from_activity_id(
const config::source_location &from_location) const;
/**
* @brief Once the diagram is complete, run any final processing.
*
* This method should be overriden by specific diagram models to do some
* final tasks like cleaning up the model (e.g. some filters only work
* on completed diagrams).
*/
void finalize() override;
/**
* @brief Check whether the diagram is empty
*
* @return True, if diagram is empty
*/
bool is_empty() const override;
/**
* If option to inline lambda calls is enabled, we need to modify the
* sequences to skip the lambda calls. In case lambda call does not lead
* to a non-lambda call, omit it entirely
*/
void inline_lambda_operator_calls();
private:
/**
* This method checks the last messages in sequence (current_messages),
* if they represent a block sequence identified by statement_begin
* (e.g. if/else) and there are no actual call expressions within this block
* statement the entire block statement is removed from the end of the
* sequence.
*
* Otherwise the block statement is ended with a proper statement
* (e.g. endif)
*
* @param m Message to add to the sequence
* @param statement_begin Type of message which begins this type of block
* statement (e.g. message_t::kIf)
* @param current_messages Reference to the sequence messages which should
* be amended
*/
void fold_or_end_block_statement(message &&m,
common::model::message_t statement_begin,
std::vector<message> &current_messages) const;
bool is_begin_block_message(common::model::message_t mt)
{
using common::model::message_t;
static std::set<message_t> block_begin_types{message_t::kIf,
message_t::kWhile, message_t::kDo, message_t::kFor, message_t::kTry,
message_t::kSwitch, message_t::kConditional};
return block_begin_types.count(mt) > 0;
};
bool is_end_block_message(common::model::message_t mt)
{
using common::model::message_t;
static std::set<message_t> block_end_types{message_t::kIfEnd,
message_t::kWhileEnd, message_t::kDoEnd, message_t::kForEnd,
message_t::kTryEnd, message_t::kSwitchEnd,
message_t::kConditionalEnd};
return block_end_types.count(mt) > 0;
};
bool inline_lambda_operator_call(
eid_t id, model::activity &new_activity, const model::message &m);
std::map<eid_t, activity> activities_;
std::map<eid_t, std::unique_ptr<participant>> participants_;
std::set<eid_t> active_participants_;
};
} // namespace clanguml::sequence_diagram::model
namespace clanguml::common::model {
template <>
bool check_diagram_type<clanguml::sequence_diagram::model::diagram>(
diagram_t t);
}