Commit Graph

16 Commits (7aa766ee65f024af2df2499a350c0a88b2a1399d)

Author SHA1 Message Date
Nick Khyl 03acab2639 cmd/cloner, cmd/viewer, util/codegen: add support for aliases of cloneable types
We have several checked type assertions to *types.Named in both cmd/cloner and cmd/viewer.
As Go 1.23 updates the go/types package to produce Alias type nodes for type aliases,
these type assertions no longer work as expected unless the new behavior is disabled
with gotypesalias=0.

In this PR, we add codegen.NamedTypeOf(t types.Type), which functions like t.(*types.Named)
but also unrolls type aliases. We then use it in place of type assertions in the cmd/cloner and
cmd/viewer packages where appropriate.

We also update type switches to include *types.Alias alongside *types.Named in relevant cases,
remove *types.Struct cases when switching on types.Type.Underlying and update the tests
with more cases where type aliases can be used.

Updates #13224
Updates #12912

Signed-off-by: Nick Khyl <nickk@tailscale.com>
3 months ago
Nick Khyl a9dc6e07ad util/codegen, cmd/cloner, cmd/viewer: update codegen.LookupMethod to support alias type nodes
Go 1.23 updates the go/types package to produce Alias type nodes for type aliases, unless disabled with gotypesalias=0.
This new default behavior breaks codegen.LookupMethod, which uses checked type assertions to types.Named and
types.Interface, as only named types and interfaces have methods.

In this PR, we update codegen.LookupMethod to perform method lookup on the right-hand side of the alias declaration
and clearly switch on the supported type nodes types. We also improve support for various edge cases, such as when an alias
is used as a type parameter constraint, and add tests for the LookupMethod function.

Additionally, we update cmd/viewer/tests to include types with aliases used in type fields and generic type constraints.

Updates #13224
Updates #12912

Signed-off-by: Nick Khyl <nickk@tailscale.com>
3 months ago
Nick Khyl f8f9f05ffe cmd/viewer: add support for map-like container types
This PR modifies viewTypeForContainerType to use the last type parameter of a container type
as the value type, enabling the implementation of map-like container types where the second-to-last
(usually first) type parameter serves as the key type.

It also adds a MapContainer type to test the code generation.

Updates #12736

Signed-off-by: Nick Khyl <nickk@tailscale.com>
3 months ago
Nick Khyl 20562a4fb9 cmd/viewer, types/views, util/codegen: add viewer support for custom container types
This adds support for container-like types such as Container[T] that
don't explicitly specify a view type for T. Instead, a package implementing
a container type should also implement and export a ContainerView[T, V] type
and a ContainerViewOf(*Container[T]) ContainerView[T, V] function, which
returns a view for the specified container, inferring the element view type V
from the element type T.

Updates #12736

Signed-off-by: Nick Khyl <nickk@tailscale.com>
4 months ago
Nick Khyl fc28c8e7f3 cmd/cloner, cmd/viewer, util/codegen: add support for generic types and interfaces
This adds support for generic types and interfaces to our cloner and viewer codegens.
It updates these packages to determine whether to make shallow or deep copies based
on the type parameter constraints. Additionally, if a template parameter or an interface
type has View() and Clone() methods, we'll use them for getters and the cloner of the
owning structure.

Updates #12736

Signed-off-by: Nick Khyl <nickk@tailscale.com>
5 months ago
Maisem Ali 491483d599 cmd/viewer,type/views: add MapSlice for maps of slices
This abstraction provides a nicer way to work with
maps of slices without having to write out three long type
params.

This also allows it to provide an AsMap implementation which
copies the map and the slices at least.

Updates tailscale/corp#20910

Signed-off-by: Maisem Ali <maisem@tailscale.com>
5 months ago
Maisem Ali 2548496cef types/views,cmd/viewer: add ByteSlice[T] to replace mem.RO
Add a new views.ByteSlice[T ~[]byte] to provide a better API to use
with views.

Updates #cleanup

Signed-off-by: Maisem Ali <maisem@tailscale.com>
1 year ago
Brad Fitzpatrick 6e57dee7eb cmd/viewer, types/views, all: un-special case slice of netip.Prefix
Make it just a views.Slice[netip.Prefix] instead of its own named type.

Having the special case led to circular dependencies in another WIP PR
of mine.

Updates #8948

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
1 year ago
Brad Fitzpatrick 4f454f4122 util/codegen: support embedded fields
I noticed cmd/{cloner,viewer} didn't support structs with embedded
fields while working on a change in another repo. This adds support.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2 years ago
Will Norris 71029cea2d all: update copyright and license headers
This updates all source files to use a new standard header for copyright
and license declaration.  Notably, copyright no longer includes a date,
and we now use the standard SPDX-License-Identifier header.

This commit was done almost entirely mechanically with perl, and then
some minimal manual fixes.

Updates #6865

Signed-off-by: Will Norris <will@tailscale.com>
2 years ago
Brad Fitzpatrick 0de66386d4 cmd/viewer: add flag to support Clone generation without Views
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2 years ago
Maisem Ali 95d43c54bf cmd/{cloner,viewer}: add support for map values with pointers
Signed-off-by: Maisem Ali <maisem@tailscale.com>
2 years ago
Maisem Ali 26f103473c cmd/viewer: add support for map of structs without pointers
This adds support for fields like `map[string]netaddr.IPPrefix`.

Signed-off-by: Maisem Ali <maisem@tailscale.com>
2 years ago
Brad Fitzpatrick 7eaf5e509f net/netaddr: start migrating to net/netip via new netaddr adapter package
Updates #5162

Change-Id: Id7bdec303b25471f69d542f8ce43805328d56c12
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2 years ago
Maisem Ali d04afc697c cmd/viewer,types/views: add support for views of maps
Updates #4635

Signed-off-by: Maisem Ali <maisem@tailscale.com>
3 years ago
Maisem Ali c4e9739251 cmd/viewer: add codegen tool for Views
Signed-off-by: Maisem Ali <maisem@tailscale.com>
3 years ago