size_t string::rfind(char c, size_t pos) const
{
pos = changeVarWhenEuqalNPOS(pos, size(), 1);
for (auto cit = cbegin() + pos; cit >= cbegin(); --cit)
{
if (*cit == c)
return cit - cbegin();
}
return npos;
}
size_t string::find_last_not_of(char c, size_t pos) const
{
pos = changeVarWhenEuqalNPOS(pos, size(), 1);
for (int i = pos; i >= 0; --i)
{
if ((*this)[i] != c)
return i;
}
return npos;
}
string::string(const string &str, size_t pos, size_t len){
len = changeVarWhenEuqalNPOS(len, str.size(), pos);
allocateAndCopy(str.start_ + pos, str.start_ + pos + len);
}
string& string::append(const string& str, size_t subpos, size_t sublen){
sublen = changeVarWhenEuqalNPOS(sublen, str.size(), subpos);
insert(size(),str,subpos,sublen);
return *this;
}
size_t string::find_last_not_of(const char* s, size_t pos) const
{
pos = changeVarWhenEuqalNPOS(pos, size(), 1);
return find_last_not_of(s, pos, strlen(s));
}
size_t string::find_last_not_of(const string& str, size_t pos) const
{
pos = changeVarWhenEuqalNPOS(pos, size(), 1);
return find_last_not_of(str.begin(), pos, str.size());
}
size_t string::rfind(const char* s, size_t pos) const
{
pos = changeVarWhenEuqalNPOS(pos, size(), 1);
return rfind(s, pos, strlen(s));
}
size_t string::rfind(const string& str, size_t pos) const
{
auto lengthOfS = str.size();
pos = changeVarWhenEuqalNPOS(pos, size(), 1);
return rfind_aux(str.begin(), pos, lengthOfS, 0);
}
string& string::replace(size_t pos, size_t len, const string& str, size_t subpos, size_t sublen)
{
sublen = changeVarWhenEuqalNPOS(sublen, str.size(), subpos);
return replace(begin() + pos, begin() + pos + len, str.begin() + subpos, str.begin() + subpos + sublen);
}
string& string::erase(size_t pos, size_t len)
{
len = changeVarWhenEuqalNPOS(len, size(), pos);
erase(begin() + pos, begin() + pos + len);
return *this;
}
string& string::insert(size_t pos, const string& str, size_t subpos, size_t sublen)
{
sublen = changeVarWhenEuqalNPOS(sublen, str.size(), subpos);
insert(begin() + pos, str.begin() + subpos, str.begin() + subpos + sublen);
return *this;
}
