diff options
Diffstat (limited to 'src/qregisters.cpp')
| -rw-r--r-- | src/qregisters.cpp | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/src/qregisters.cpp b/src/qregisters.cpp index fdb804b..223a707 100644 --- a/src/qregisters.cpp +++ b/src/qregisters.cpp @@ -275,6 +275,30 @@ QRegisterTable::edit(QRegister *reg) QRegisters::current = reg; } +/* + * This is similar to RBTree::clear() but + * has the advantage that we can check whether some + * register is currently edited. + * Since this is not a destructor, we can throw + * errors. + * Therefore this method should be called before + * a (local) QRegisterTable is deleted. + */ +void +QRegisterTable::clear(void) +{ + QRegister *cur; + + while ((cur = (QRegister *)min())) { + if (cur == QRegisters::current) + throw Error("Currently edited Q-Register \"%s\" " + "cannot be discarded", cur->name); + + remove(cur); + delete cur; + } +} + void QRegisterStack::UndoTokenPush::run(void) { |