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iterators

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This commit is contained in:
Emil J. Tywoniak 2024-06-10 18:48:09 +02:00
parent e243968406
commit 8403eee59b
1 changed files with 46 additions and 2 deletions
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48
kernel/rtlil.h
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@ -1555,9 +1555,10 @@ struct RTLIL::Unary {
int a_width;
int y_width;
bool is_signed;
std::array<RTLIL::SigSpec&, 2> connections() {
return {a, y};
std::array<std::pair<RTLIL::IdString, RTLIL::SigSpec>, 2> connections() {
return {std::make_pair(ID::A, a), std::make_pair(ID::Y, y)};
}
// TODO new interface: inputs
};
struct RTLIL::Cell
@ -1608,6 +1609,49 @@ public:
}
return 1;
}
class iterator: public std::iterator<std::input_iterator_tag, std::pair<IdString, SigSpec>> {
Cell* parent;
int position;
public:
iterator(Cell *parent, int position)
: parent(parent), position(position) {}
iterator& operator++() {
position++; return *this;
}
bool operator==(const iterator &other) const {
return position == other.position;
}
bool operator!=(const iterator &other) const {
return !(*this == other);
}
std::pair<IdString, SigSpec> operator*() const {
if (parent->is_legacy()) {
auto it = parent->legacy->connections_.begin();
it += position;
return *it;
} else if (parent->type == ID($pos)) {
return parent->pos.connections()[position];
} else if (parent->type == ID($neg)) {
return parent->neg.connections()[position];
} else if (parent->type == ID($not)) {
return parent->not_.connections()[position];
}
}
iterator begin() const {
return iterator(parent, 0);
}
iterator end() const {
if (parent->is_legacy()) {
return iterator(parent, parent->legacy->connections_.size());
} else if (parent->type == ID($pos)) {
return iterator(parent, parent->pos.connections().size());
} else if (parent->type == ID($neg)) {
return iterator(parent, parent->neg.connections().size());
} else if (parent->type == ID($not)) {
return iterator(parent, parent->not_.connections().size());
}
}
};
};
FakeParams parameters;
FakeConns connections_;