/**
* Traverses expression tree pre-order.
* Appends an encoding of each node's match type and path name
* to the output stream.
*/
void PlanCache::encodeKeyForMatch(const MatchExpression* tree,
StringBuilder* keyBuilder) const {
// Encode match type and path.
*keyBuilder << encodeMatchType(tree->matchType());
encodeUserString(tree->path(), keyBuilder);
// GEO and GEO_NEAR require additional encoding.
if (MatchExpression::GEO == tree->matchType()) {
encodeGeoMatchExpression(static_cast<const GeoMatchExpression*>(tree), keyBuilder);
}
else if (MatchExpression::GEO_NEAR == tree->matchType()) {
encodeGeoNearMatchExpression(static_cast<const GeoNearMatchExpression*>(tree),
keyBuilder);
}
// Encode indexability.
const IndexabilityDiscriminators& discriminators =
_indexabilityState.getDiscriminators(tree->path());
if (!discriminators.empty()) {
*keyBuilder << kEncodeDiscriminatorsBegin;
// For each discriminator on this path, append the character '0' or '1'.
for (const IndexabilityDiscriminator& discriminator : discriminators) {
*keyBuilder << discriminator(tree);
}
*keyBuilder << kEncodeDiscriminatorsEnd;
}
// Traverse child nodes.
// Enclose children in [].
if (tree->numChildren() > 0) {
*keyBuilder << kEncodeChildrenBegin;
}
// Use comma to separate children encoding.
for (size_t i = 0; i < tree->numChildren(); ++i) {
if (i > 0) {
*keyBuilder << kEncodeChildrenSeparator;
}
encodeKeyForMatch(tree->getChild(i), keyBuilder);
}
if (tree->numChildren() > 0) {
*keyBuilder << kEncodeChildrenEnd;
}
}
void B2Trk(B2ChnlPrms * chnlInst,char dataIn)
{
B2TrkPrms *trkInst = &(chnlInst->trkInst);
// 相关运算
correlation(chnlInst,dataIn);
//如果是一个完整的码周期
if (trkInst->oneCircle == 1)
{
// 鉴相
discriminator(trkInst);
//一阶滤波
trkInst->flt_codeLoop = codeLoopFilter(&(trkInst->lpf),trkInst->dis_dll);
//二阶滤波
trkInst->flt_carrierLoop = carrierLoopFilter(&(trkInst->lpf),trkInst->dis_pll,trkInst->dis_fll);
// 更新跟踪参数
updateTrk(chnlInst);
//比特流处理
//subFrameUpdate(chnl);
}
//↓↓↓↓↓↓ for test↓↓↓↓↓↓↓
if (outflag == 1)
{
writeToFile(chnlInst->TCAR.phs,(chnlInst->chnlID-1)*11+CAR_PHS_SRC_OUT);
writeToFile(chnlInst->TPRN.phs,(chnlInst->chnlID-1)*11+PRN_PHS_SRC_OUT);
writeToFile(chnlInst->trkInst.car.phs,(chnlInst->chnlID-1)*11+CAR_PHS_LCL_OUT);
writeToFile(chnlInst->trkInst.prn.phs.phsP,(chnlInst->chnlID-1)*11+PRN_PHS_LCL_OUT);
}
// ↑↑↑↑↑↑for test↑↑↑↑↑↑↑
}
