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Code Issues Releases Wiki Activity

Replace switch with map

This commit is contained in:
Evgenii Zheltonozhskii 2018-10-26 21:34:41 +03:00 committed by Alex
parent 6bed3132ae
commit 0e7d653b32
1 changed files with 17 additions and 59 deletions
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76
Telegram/SourceFiles/codegen/numbers/generator.cpp
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@ -44,70 +44,28 @@ bool Generator::writeHeader() {
bool Generator::writeSource() {
source_ = std::make_unique<common::CppFile>(basePath_ + ".cpp", project_);
source_->include("map", true);
source_->include("QVector", true);
source_->stream() << "\
QVector<int> phoneNumberParse(const QString &number) {\n\
QVector<int> result;\n\
\n\
qint32 len = number.size();\n\
if (len > 0) switch (number.at(0).unicode()) {\n";
QString already;
for (auto i = rules_.data.cend(), e = rules_.data.cbegin(); i != e;) {
--i;
QString k = i.key();
bool onlyLastChanged = true;
while (!already.isEmpty() && (already.size() > k.size() || !already.endsWith(k.at(already.size() - 1)))) {
if (!onlyLastChanged) {
source_->stream() << QString("\t").repeated(1 + already.size()) << "}\n";
source_->stream() << QString("\t").repeated(already.size()) << "break;\n";
}
already = already.mid(0, already.size() - 1);
onlyLastChanged = false;
source_->stream() << R"code(const std::map<QString, QVector<int>> RulesMap = {
)code";
for (auto rule = rules_.data.cbegin(), e = rules_.data.cend(); rule != e; ++rule) {
auto k =rule.key();
source_->stream() << "{\"" << k << "\",{";
for (auto &c: rule.key()) {
source_->stream() << c.toLatin1() << ",";
}
if (already == k) {
source_->stream() << QString("\t").repeated(1 + already.size()) << "}\n";
} else {
bool onlyFirstCheck = true;
while (already.size() < k.size()) {
if (!onlyFirstCheck)
source_->stream() << QString("\t").repeated(1 + already.size()) << "if (len > " << already.size()
<< ") switch (number.at(" << already.size() << ").unicode()) {\n";
source_->stream() << QString("\t").repeated(1 + already.size()) << "case '"
<< k.at(already.size()).toLatin1() << "':\n";
already.push_back(k.at(already.size()));
onlyFirstCheck = false;
}
}
if (i.value().isEmpty()) {
source_->stream() << QString("\t").repeated(1 + already.size()) << "return QVector<int>(1, " << k.size()
<< ");\n";
} else {
source_->stream() << QString("\t").repeated(1 + already.size()) << "result.reserve("
<< (i.value().size() + 1) << ");\n";
source_->stream() << QString("\t").repeated(1 + already.size()) << "result.push_back(" << k.size()
<< ");\n";
for (int j = 0, l = i.value().size(); j < l; ++j) {
source_->stream() << QString("\t").repeated(1 + already.size()) << "result.push_back("
<< i.value().at(j) << ");\n";
}
source_->stream() << QString("\t").repeated(1 + already.size()) << "return result;\n";
}
}
bool onlyLastChanged = true;
while (!already.isEmpty()) {
if (!onlyLastChanged) {
source_->stream() << QString("\t").repeated(1 + already.size()) << "}\n";
}
already = already.mid(0, already.size() - 1);
onlyLastChanged = false;
source_->stream()<< "}},\n";
}
source_->stream() << "\
}\n\
\n\
return result;\n\
}\n";
};";
source_->stream() << R"code(
QVector<int> phoneNumberParse(const QString &number) {
return RulesMap.find(number) != RulesMap.end() ? RulesMap.at(number) : QVector<int>();
}
)code";
return source_->finalize();
}