[Lldb-commits] [lldb] [debugserver] Implement MultiMemRead packet (PR #162670)

[Felipe de Azevedo Piovezan via lldb-commits]

================
@@ -3160,6 +3165,140 @@ rnb_err_t RNBRemote::HandlePacket_m(const char *p) {
   return SendPacket(ostrm.str());
 }
 
+/// Returns true if `str` starts with `prefix`.
+static bool starts_with(std::string_view str, std::string_view prefix) {
+  return str.size() >= prefix.size() &&
+         str.compare(0, prefix.size(), prefix) == 0;
+}
+
+/// Attempts to parse a prefix of `number_str` as a number of type `T`. If
+/// successful, the number is returned and the prefix is dropped from
+/// `number_str`.
+template <typename T>
+static std::optional<T> extract_number(std::string_view &number_str) {
+  static_assert(std::is_integral<T>());
+  char *str_end = nullptr;
+  errno = 0;
----------------
felipepiovezan wrote:

It's a C thing, sadly. This pattern is all over this file :( 

https://github.com/llvm/llvm-project/pull/162670