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/*
* Statement.h
*
* Created on: Nov 23, 2017
* Author: naopross
*/
#ifndef SRC_DIAGRAM_STATEMENT_H_
#define SRC_DIAGRAM_STATEMENT_H_
#include <string>
#include <memory>
namespace samb {
/* Possible types of statement, according to the NS diagram paper
*
* PROCESS,
* DECISION,
* SWITCH,
* WHILE,
* UNTIL,
* SCOPE,
* PARALLEL,
*/
/* this struct is a link for linked list that stores the data in a tree-like
* structure, BUT it is not a tree because it allows 2 or more nodes to point
* at a single node
*
* Tree: Statements:
* A - B - C - D A - B - C - D - G
* \ \ /
* E - F E - F
*
* Because a statements can be branching elements. (if / switch)
*
* This class is also a *Factory* to make statements.
*/
struct Statement {
using pointer = std::shared_ptr<Statement>;
enum Type {
PROCESS,
DECISION,
SWITCH,
WHILE,
UNTIL,
SCOPE,
PARALLEL,
/* this type of statement indicates the end of the program
* and it is used only internally
*
* TODO: think of something more elegant to solve this
*/
END
} type;
std::string text;
pointer next;
pointer scope; // TODO: make iterator aware of scope
static Statement::pointer makeStatement(Type t);
virtual ~Statement();
bool operator==(const Statement& other);
private:
Statement(Type type, std::string txt, pointer next, pointer scope);
};
} /* namespace samb */
#endif /* SRC_DIAGRAM_STATEMENT_H_ */
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