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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 : a statement that does something
* SCOPE : simple scope to isolate variables
* DECISION : splits the program in 2 branches based on a condition
* SWITCH : splits the program in n branches depending on a value
* WHILE : repeat first loop
* UNTIL : repeat last loop
* PARALLEL : parallel operations
*/
/* This struct is a statement (link) of the iterable object Scope
* (linked list), that is also a common interface for the various types of
* statements.
*/
class Statement {
public:
using pointer = std::shared_ptr<Statement>;
enum Type {
PROCESS,
SCOPE,
DECISION,
SWITCH,
WHILE,
UNTIL,
PARALLEL,
};
const Type type;
Statement(Type t, const std::string& text);
Statement(Type t, const std::string& text, pointer next);
virtual ~Statement();
bool operator==(const Statement& other) const;
/* accessors */
void next(pointer next) { m_next = next; }
pointer next() const { return m_next; }
void text(const std::string& text) { m_text = text; }
const std::string& text() const { return m_text; }
private:
std::string m_text;
pointer m_next;
};
} /* namespace samb */
#endif /* SRC_DIAGRAM_STATEMENT_H_ */
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