Make sure that the same function overloads with different priorities
come together in the completions list.
Fixes the case when we complete the method without '.' or '->'.
Change-Id: Icaf7ea47f5e58b3ae5cc9764ad79c857f6f6e231
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@qt.io>
With this change ClangCodeModel only needs to sort completions by prefix.
Also some other optimization have become possible and are implemented here:
1. Getting completions after '{' for constructor overloads by replacing
it with '(' inside usaved file.
2. Checking for all overloads requires only previous item check because
all Class completions are already sorted to go before all CXXConstructor
completions. Since they are not mixed no extra search is required.
Change-Id: Ie0187ad96a20857a63c1d71ddec74606b803f572
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@qt.io>
