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#ifndef DIAGRAM_STATEMENT_H
#define DIAGRAM_STATEMENT_H
#include <string>
#include <memory>
#include <QString>
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 : check first loop
* UNTIL : check 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 QString &text);
Statement(Type t, const QString &text, pointer next);
virtual ~Statement();
bool operator==(const Statement& other) const;
/* accessors */
void next(pointer next) { _next = next; }
pointer next() const { return _next; }
void text(const QString &text) { _text = text; }
const QString& text() const { return _text; }
private:
QString _text;
pointer _next;
};
} /* namespace samb */
#endif /* DIAGRAM_STATEMENT_H */
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