buildflags: make work on go 1.22 by reverting rangefunc usage

Reverts the usage of rangefunc and attempts to keep the foundation of it
in for when we move to go 1.23. We have downstream dependencies that
aren't ready to move to go 1.23. We can likely move after go 1.24 is
released.

Signed-off-by: Jonathan A. Sternberg <jonathan.sternberg@docker.com>
This commit is contained in:
Jonathan A. Sternberg 2025-02-10 11:03:46 -06:00
parent 0a4eb7ec76
commit 3ae9970da5
No known key found for this signature in database
GPG Key ID: 6603D4B96394F6B1
7 changed files with 52 additions and 33 deletions

2
go.mod
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@ -1,6 +1,6 @@
module github.com/docker/buildx
go 1.23.0
go 1.22.0
require (
github.com/Masterminds/semver/v3 v3.2.1

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@ -22,16 +22,19 @@ func (e *Attests) FromCtyValue(in cty.Value, p cty.Path) error {
return p.NewErrorf("%s", convert.MismatchMessage(got, want))
}
func (e *Attests) fromCtyValue(in cty.Value, p cty.Path) error {
func (e *Attests) fromCtyValue(in cty.Value, p cty.Path) (retErr error) {
*e = make([]*Attest, 0, in.LengthInt())
for value := range eachElement(in) {
yield := func(value cty.Value) bool {
entry := &Attest{}
if err := entry.FromCtyValue(value, p); err != nil {
return err
if retErr = entry.FromCtyValue(value, p); retErr != nil {
return false
}
*e = append(*e, entry)
return true
}
return nil
eachElement(in)(yield)
return retErr
}
func (e Attests) ToCtyValue() cty.Value {

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@ -21,26 +21,30 @@ func (o *CacheOptions) FromCtyValue(in cty.Value, p cty.Path) error {
return p.NewErrorf("%s", convert.MismatchMessage(got, want))
}
func (o *CacheOptions) fromCtyValue(in cty.Value, p cty.Path) error {
func (o *CacheOptions) fromCtyValue(in cty.Value, p cty.Path) (retErr error) {
*o = make([]*CacheOptionsEntry, 0, in.LengthInt())
for value := range eachElement(in) {
yield := func(value cty.Value) bool {
// Special handling for a string type to handle ref only format.
if value.Type() == cty.String {
entries, err := ParseCacheEntry([]string{value.AsString()})
if err != nil {
return err
var entries CacheOptions
entries, retErr = ParseCacheEntry([]string{value.AsString()})
if retErr != nil {
return false
}
*o = append(*o, entries...)
continue
return true
}
entry := &CacheOptionsEntry{}
if err := entry.FromCtyValue(value, p); err != nil {
return err
if retErr = entry.FromCtyValue(value, p); retErr != nil {
return false
}
*o = append(*o, entry)
return true
}
return nil
eachElement(in)(yield)
return retErr
}
func (o CacheOptions) ToCtyValue() cty.Value {

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@ -21,16 +21,19 @@ func (e *Exports) FromCtyValue(in cty.Value, p cty.Path) error {
return p.NewErrorf("%s", convert.MismatchMessage(got, want))
}
func (e *Exports) fromCtyValue(in cty.Value, p cty.Path) error {
func (e *Exports) fromCtyValue(in cty.Value, p cty.Path) (retErr error) {
*e = make([]*ExportEntry, 0, in.LengthInt())
for value := range eachElement(in) {
yield := func(value cty.Value) bool {
entry := &ExportEntry{}
if err := entry.FromCtyValue(value, p); err != nil {
return err
if retErr = entry.FromCtyValue(value, p); retErr != nil {
return false
}
*e = append(*e, entry)
return true
}
return nil
eachElement(in)(yield)
return retErr
}
func (e Exports) ToCtyValue() cty.Value {

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@ -28,16 +28,19 @@ func (s *Secrets) FromCtyValue(in cty.Value, p cty.Path) error {
return p.NewErrorf("%s", convert.MismatchMessage(got, want))
}
func (s *Secrets) fromCtyValue(in cty.Value, p cty.Path) error {
func (s *Secrets) fromCtyValue(in cty.Value, p cty.Path) (retErr error) {
*s = make([]*Secret, 0, in.LengthInt())
for value := range eachElement(in) {
yield := func(value cty.Value) bool {
entry := &Secret{}
if err := entry.FromCtyValue(value, p); err != nil {
return err
if retErr = entry.FromCtyValue(value, p); retErr != nil {
return false
}
*s = append(*s, entry)
return true
}
return nil
eachElement(in)(yield)
return retErr
}
func (s Secrets) ToCtyValue() cty.Value {

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@ -28,16 +28,19 @@ func (s *SSHKeys) FromCtyValue(in cty.Value, p cty.Path) error {
return p.NewErrorf("%s", convert.MismatchMessage(got, want))
}
func (s *SSHKeys) fromCtyValue(in cty.Value, p cty.Path) error {
func (s *SSHKeys) fromCtyValue(in cty.Value, p cty.Path) (retErr error) {
*s = make([]*SSH, 0, in.LengthInt())
for value := range eachElement(in) {
yield := func(value cty.Value) bool {
entry := &SSH{}
if err := entry.FromCtyValue(value, p); err != nil {
return err
if retErr = entry.FromCtyValue(value, p); retErr != nil {
return false
}
*s = append(*s, entry)
return true
}
return nil
eachElement(in)(yield)
return retErr
}
func (s SSHKeys) ToCtyValue() cty.Value {

View File

@ -1,8 +1,6 @@
package buildflags
import (
"iter"
"github.com/zclconf/go-cty/cty"
"github.com/zclconf/go-cty/cty/gocty"
)
@ -57,7 +55,12 @@ func isEmptyOrUnknown(v cty.Value) bool {
return !v.IsKnown() || (v.Type() == cty.String && v.AsString() == "")
}
func eachElement(in cty.Value) iter.Seq[cty.Value] {
// Seq is a temporary definition of iter.Seq until we are able to migrate
// to using go1.23 as our minimum version. This can be removed when go1.24
// is released and usages can be changed to use rangefunc.
type Seq[V any] func(yield func(V) bool)
func eachElement(in cty.Value) Seq[cty.Value] {
return func(yield func(v cty.Value) bool) {
for elem := in.ElementIterator(); elem.Next(); {
_, value := elem.Element()