MemberCode parseMemberCode(const char* s) {
int incr;
switch (*s) {
case 'W':
return MW;
case 'E':
incr = 0;
break;
case 'P':
incr = 1;
break;
default:
return InvalidMemberCode;
}
switch (s[1]) {
case 'C':
return MemberCode(MEC + incr);
case 'L':
return MemberCode(MEL + incr);
case 'T':
return MemberCode(MET + incr);
case 'I':
return incr ? InvalidMemberCode : MEI;
default:
return InvalidMemberCode;
}
}
const uint8_t* ImmVector::findLastMember() const {
assert(m_length > 0);
// Loop that does basically the same as numStackValues(), except
// stop at the last.
const uint8_t* vec = m_start;
const LocationCode locCode = LocationCode(*vec++);
const int numLocImms = numLocationCodeImms(locCode);
for (int i = 0; i < numLocImms; ++i) {
decodeVariableSizeImm(&vec);
}
for (;;) {
const uint8_t* ret = vec;
MemberCode code = MemberCode(*vec++);
if (memberCodeHasImm(code)) {
decodeMemberCodeImm(&vec, code);
}
if (vec - m_start == m_length) {
return ret;
}
assert(vec - m_start < m_length);
}
NOT_REACHED();
}
folly::Optional<MemberCode> parseMemberCode(const char* s) {
for (auto i = 0; i < memberNamesCount; i++) {
if (!strcmp(memberNames[i], s)) {
return MemberCode(i);
}
}
return folly::none;
}
MemberCode parseMemberCode(const char* s) {
for (auto i = 0; i < memberNamesCount; i++) {
if (!strcmp(memberNames[i], s)) {
return MemberCode(i);
}
}
return InvalidMemberCode;
}
bool ImmVector::decodeLastMember(const Unit* u,
StringData*& sdOut,
MemberCode& membOut,
int64_t* strIdOut /*=NULL*/) const {
const uint8_t* vec = findLastMember();
membOut = MemberCode(*vec++);
if (memberCodeImmIsString(membOut)) {
int64_t strId = decodeMemberCodeImm(&vec, membOut);
if (strIdOut) *strIdOut = strId;
sdOut = u->lookupLitstrId(strId);
return true;
}
return false;
}
std::vector<MVectorItem> getMVector(const Op* opcode) {
auto immVec = getImmVector(opcode);
std::vector<MVectorItem> result;
auto it = immVec.vec();
auto end = it + immVec.size();
// Skip the LocationCode and its immediate
auto const lcode = LocationCode(*it++);
if (numLocationCodeImms(lcode)) decodeVariableSizeImm(&it);
while (it < end) {
auto const mcode = MemberCode(*it++);
auto const imm = memberCodeHasImm(mcode) ? decodeMemberCodeImm(&it, mcode)
: 0;
result.push_back({mcode, imm});
}
return result;
}
