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fix_optional_collection_aliases.go
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fix_optional_collection_aliases.go
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/*
* Copyright (c) Microsoft Corporation.
* Licensed under the MIT license.
*/
package pipeline
import (
"context"
"github.com/pkg/errors"
"github.com/Azure/azure-service-operator/v2/tools/generator/internal/astmodel"
)
const FixOptionalCollectionAliasesStageId = "fixOptionalCollectionAliases"
func FixOptionalCollectionAliases() *Stage {
return NewStage(
FixOptionalCollectionAliasesStageId,
"Replace types which are optional aliases to collections with just the collection alias",
func(ctx context.Context, state *State) (*State, error) {
fixer := optionalCollectionAliasFixer{
definitions: state.Definitions(),
}
fixer.visitor = astmodel.TypeVisitorBuilder[any]{
VisitOptionalType: fixer.fixOptionalCollectionAliases,
}.Build()
results := make(astmodel.TypeDefinitionSet)
for _, def := range state.Definitions() {
d, err := fixer.visitor.VisitDefinition(def, nil)
if err != nil {
return nil, errors.Wrapf(err, "visiting %q", def.Name())
}
results.Add(d)
}
return state.WithDefinitions(results), nil
},
)
}
type optionalCollectionAliasFixer struct {
definitions astmodel.TypeDefinitionSet
visitor astmodel.TypeVisitor[any]
}
func (f *optionalCollectionAliasFixer) fixOptionalCollectionAliases(
this *astmodel.TypeVisitor[any],
it *astmodel.OptionalType,
ctx any,
) (astmodel.Type, error) {
typeName, ok := astmodel.AsInternalTypeName(it)
if !ok {
return astmodel.IdentityVisitOfOptionalType(this, it, ctx)
}
resolved, err := f.definitions.FullyResolve(typeName)
if err != nil {
return nil, err
}
_, isArray := astmodel.AsArrayType(resolved)
_, isMap := astmodel.AsMapType(resolved)
isCollection := isArray || isMap
if !isCollection {
return astmodel.IdentityVisitOfOptionalType(this, it, ctx)
}
// Return the type unwrapped
return it.Element(), nil
}