Add StringMap::lookup.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66750 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/llvm/ADT/StringMap.h b/include/llvm/ADT/StringMap.h
index 08418ee..f539475 100644
--- a/include/llvm/ADT/StringMap.h
+++ b/include/llvm/ADT/StringMap.h
@@ -303,6 +303,27 @@
return find(key_start, key_start + Key.size());
}
+ /// lookup - Return the entry for the specified key, or a default
+ /// constructed value if no such entry exists.
+ ValueTy lookup(const char *KeyStart, const char *KeyEnd) const {
+ const_iterator it = find(KeyStart, KeyEnd);
+ if (it != end())
+ return it->second;
+ return ValueTy();
+ }
+ ValueTy lookup(const char *Key) const {
+ const_iterator it = find(Key);
+ if (it != end())
+ return it->second;
+ return ValueTy();
+ }
+ ValueTy lookup(const std::string &Key) const {
+ const_iterator it = find(Key);
+ if (it != end())
+ return it->second;
+ return ValueTy();
+ }
+
ValueTy& operator[](const char *Key) {
return GetOrCreateValue(Key, Key + strlen(Key)).getValue();
}