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SigSpec refactoring: Added RTLIL::SigSpecIterator

This commit is contained in:
Clifford Wolf 2014-07-22 23:49:26 +02:00
parent 4a6d234ec7
commit 9e94f41b89
1 changed files with 28 additions and 6 deletions
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34
kernel/rtlil.h
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@ -69,6 +69,7 @@ namespace RTLIL
struct Cell;
struct SigChunk;
struct SigBit;
struct SigSpecIterator;
struct SigSpec;
struct CaseRule;
struct SwitchRule;
@ -494,6 +495,14 @@ struct RTLIL::SigBit {
}
};
struct RTLIL::SigSpecIterator {
RTLIL::SigSpec *sig_p;
int index;
inline RTLIL::SigBit &operator*() const;
inline bool operator!=(const RTLIL::SigSpecIterator &other) { return index != other.index; }
inline void operator++() { index++; }
};
struct RTLIL::SigSpec {
private:
std::vector<RTLIL::SigChunk> chunks_; // LSB at index 0
@ -504,6 +513,11 @@ private:
void unpack() const;
bool packed() const;
inline void inline_unpack() const {
if (!chunks_.empty())
unpack();
}
public:
SigSpec();
SigSpec(const RTLIL::Const &data);
@ -513,17 +527,21 @@ public:
SigSpec(int val, int width = 32);
SigSpec(RTLIL::State bit, int width = 1);
SigSpec(RTLIL::SigBit bit, int width = 1);
SigSpec(std::vector<RTLIL::SigChunk> chunks);
SigSpec(std::vector<RTLIL::SigBit> bits);
SigSpec(std::set<RTLIL::SigBit> bits);
std::vector<RTLIL::SigChunk> &chunks_rw() { pack(); return chunks_; }
const std::vector<RTLIL::SigChunk> &chunks() const { pack(); return chunks_; }
const std::vector<RTLIL::SigBit> &bits() const { unpack(); return bits_; }
inline std::vector<RTLIL::SigChunk> &chunks_rw() { pack(); return chunks_; }
inline const std::vector<RTLIL::SigChunk> &chunks() const { pack(); return chunks_; }
inline const std::vector<RTLIL::SigBit> &bits() const { inline_unpack(); return bits_; }
int size() const { return width_; }
inline int size() const { return width_; }
RTLIL::SigBit &operator[](int index) { unpack(); return bits_.at(index); }
const RTLIL::SigBit &operator[](int index) const { unpack(); return bits_.at(index); }
inline RTLIL::SigBit &operator[](int index) { inline_unpack(); return bits_.at(index); }
inline const RTLIL::SigBit &operator[](int index) const { inline_unpack(); return bits_.at(index); }
inline RTLIL::SigSpecIterator begin() { RTLIL::SigSpecIterator it; it.sig_p = this; it.index = 0; return it; }
inline RTLIL::SigSpecIterator end() { RTLIL::SigSpecIterator it; it.sig_p = this; it.index = width_; return it; }
void expand();
void optimize();
@ -582,6 +600,10 @@ public:
void check() const;
};
inline RTLIL::SigBit &RTLIL::SigSpecIterator::operator*() const {
return (*sig_p)[index];
}
inline RTLIL::SigBit::SigBit(const RTLIL::SigSpec &sig) {
assert(sig.size() == 1 && sig.chunks().size() == 1);
*this = SigBit(sig.chunks()[0]);