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make applyconfiguration-gen handle pointers to slices

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This commit is contained in:
David Eads 2022-08-19 15:23:36 -04:00
parent 09d9d37c38
commit e643b0e667
1 changed files with 33 additions and 6 deletions
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39
staging/src/k8s.io/code-generator/cmd/applyconfiguration-gen/generators/applyconfiguration.go
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@ -169,7 +169,6 @@ func (g *applyConfigurationGenerator) generateWithFuncs(t *types.Type, typeParam
EmbeddedIn: embed,
}
if memberParams.Member.Embedded {
g.generateWithFuncs(member.Type, typeParams, sw, &memberParams)
if !jsonTags.inline {
// non-inlined embeds are nillable and need a "ensure exists" utility function
@ -177,12 +176,13 @@ func (g *applyConfigurationGenerator) generateWithFuncs(t *types.Type, typeParam
}
continue
}
// For slices where the items are generated apply configuration types, accept varargs of
// pointers of the type as "with" function arguments so the "with" function can be used like so:
// WithFoos(Foo().WithName("x"), Foo().WithName("y"))
if t := deref(member.Type); t.Kind == types.Slice && g.refGraph.isApplyConfig(t.Elem) {
memberParams.ArgType = &types.Type{Kind: types.Pointer, Elem: memberType.Elem}
g.generateMemberWithForSlice(sw, memberParams)
g.generateMemberWithForSlice(sw, member, memberParams)
continue
}
// Note: There are no maps where the values are generated apply configurations (because
@ -194,7 +194,7 @@ func (g *applyConfigurationGenerator) generateWithFuncs(t *types.Type, typeParam
switch memberParams.Member.Type.Kind {
case types.Slice:
memberParams.ArgType = memberType.Elem
g.generateMemberWithForSlice(sw, memberParams)
g.generateMemberWithForSlice(sw, member, memberParams)
case types.Map:
g.generateMemberWithForMap(sw, memberParams)
default:
@ -264,20 +264,39 @@ func (g *applyConfigurationGenerator) generateMemberWith(sw *generator.SnippetWr
sw.Do("}\n", memberParams)
}
func (g *applyConfigurationGenerator) generateMemberWithForSlice(sw *generator.SnippetWriter, memberParams memberParams) {
func (g *applyConfigurationGenerator) generateMemberWithForSlice(sw *generator.SnippetWriter, member types.Member, memberParams memberParams) {
memberIsPointerToSlice := member.Type.Kind == types.Pointer
if memberIsPointerToSlice {
sw.Do(ensureNonEmbedSliceExists, memberParams)
}
sw.Do("// With$.Member.Name$ adds the given value to the $.Member.Name$ field in the declarative configuration\n", memberParams)
sw.Do("// and returns the receiver, so that objects can be build by chaining \"With\" function invocations.\n", memberParams)
sw.Do("// If called multiple times, values provided by each call will be appended to the $.Member.Name$ field.\n", memberParams)
sw.Do("func (b *$.ApplyConfig.ApplyConfiguration|public$) With$.Member.Name$(values ...$.ArgType|raw$) *$.ApplyConfig.ApplyConfiguration|public$ {\n", memberParams)
g.ensureEnbedExistsIfApplicable(sw, memberParams)
if memberIsPointerToSlice {
sw.Do("b.ensure$.MemberType.Elem|public$Exists()\n", memberParams)
}
sw.Do(" for i := range values {\n", memberParams)
if memberParams.ArgType.Kind == types.Pointer {
sw.Do("if values[i] == nil {\n", memberParams)
sw.Do(" panic(\"nil value passed to With$.Member.Name$\")\n", memberParams)
sw.Do("}\n", memberParams)
sw.Do("b.$.Member.Name$ = append(b.$.Member.Name$, *values[i])\n", memberParams)
if memberIsPointerToSlice {
sw.Do("*b.$.Member.Name$ = append(*b.$.Member.Name$, *values[i])\n", memberParams)
} else {
sw.Do("b.$.Member.Name$ = append(b.$.Member.Name$, *values[i])\n", memberParams)
}
} else {
sw.Do("b.$.Member.Name$ = append(b.$.Member.Name$, values[i])\n", memberParams)
if memberIsPointerToSlice {
sw.Do("*b.$.Member.Name$ = append(*b.$.Member.Name$, values[i])\n", memberParams)
} else {
sw.Do("b.$.Member.Name$ = append(b.$.Member.Name$, values[i])\n", memberParams)
}
}
sw.Do(" }\n", memberParams)
sw.Do(" return b\n", memberParams)
@ -317,6 +336,14 @@ func (b *$.ApplyConfig.ApplyConfiguration|public$) ensure$.MemberType.Elem|publi
}
`
var ensureNonEmbedSliceExists = `
func (b *$.ApplyConfig.ApplyConfiguration|public$) ensure$.MemberType.Elem|public$Exists() {
if b.$.Member.Name$ == nil {
b.$.Member.Name$ = &[]$.MemberType.Elem|raw${}
}
}
`
var clientgenTypeConstructorNamespaced = `
// $.ApplyConfig.Type|public$ constructs an declarative configuration of the $.ApplyConfig.Type|public$ type for use with
// apply.