types/result, util/lineiter: add package for a result type, use it

This adds a new generic result type (motivated by golang/go#70084) to
try it out, and uses it in the new lineutil package (replacing the old
lineread package), changing that package to return iterators:
sometimes over []byte (when the input is all in memory), but sometimes
iterators over results of []byte, if errors might happen at runtime.

Updates #12912
Updates golang/go#70084

Change-Id: Iacdc1070e661b5fb163907b1e8b07ac7d51d3f83
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick
2024-11-04 20:49:40 -08:00
committed by Brad Fitzpatrick
parent 809a6eba80
commit 01185e436f
20 changed files with 290 additions and 139 deletions

View File

@@ -140,6 +140,7 @@ tailscale.com/cmd/derper dependencies: (generated by github.com/tailscale/depawa
tailscale.com/types/persist from tailscale.com/ipn
tailscale.com/types/preftype from tailscale.com/ipn
tailscale.com/types/ptr from tailscale.com/hostinfo+
tailscale.com/types/result from tailscale.com/util/lineiter
tailscale.com/types/structs from tailscale.com/ipn+
tailscale.com/types/tkatype from tailscale.com/client/tailscale+
tailscale.com/types/views from tailscale.com/ipn+
@@ -154,7 +155,7 @@ tailscale.com/cmd/derper dependencies: (generated by github.com/tailscale/depawa
tailscale.com/util/fastuuid from tailscale.com/tsweb
💣 tailscale.com/util/hashx from tailscale.com/util/deephash
tailscale.com/util/httpm from tailscale.com/client/tailscale
tailscale.com/util/lineread from tailscale.com/hostinfo+
tailscale.com/util/lineiter from tailscale.com/hostinfo+
L tailscale.com/util/linuxfw from tailscale.com/net/netns
tailscale.com/util/mak from tailscale.com/health+
tailscale.com/util/multierr from tailscale.com/health+