mirror of https://github.com/pulumi/pulumi.git
108 lines
3.1 KiB
Go
108 lines
3.1 KiB
Go
// Copyright 2016-2023, Pulumi Corporation.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package pulumix
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import (
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"context"
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"reflect"
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"github.com/pulumi/pulumi/sdk/v3/go/internal"
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)
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// GPtrOutput is an Output value holding a pointer of type T.
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// It may be used as an Input[*T].
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//
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// O is the kind of Output value that this GPtrOutput unwraps to.
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type GPtrOutput[T any, O OutputOf[T]] struct{ *internal.OutputState }
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var _ Input[*int] = GPtrOutput[int, Output[int]]{}
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// ElementType returns the reflected type of *T.
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func (o GPtrOutput[T, O]) ElementType() reflect.Type {
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return typeOf[*T]()
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}
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// Untyped converts a GPtrOutput[T] to a pulumi.Output.
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//
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// See [Output.Untyped] for more details.
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func (o GPtrOutput[T, O]) Untyped() internal.Output {
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return internal.ToOutput(o)
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}
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// ToOutput converts the GPtrOutput to an Output.
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func (o GPtrOutput[T, O]) ToOutput(ctx context.Context) Output[*T] {
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return Output[*T](o)
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}
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// Elem dereferences the pointer, returning the underlying value in an Output.
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// If the pointer is nil, the returned Output holds the zero value of T.
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func (o GPtrOutput[T, O]) Elem() O {
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result := PtrOutput[T](o).Elem()
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return Cast[O, T](result)
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}
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// PtrOutput is an Output value holding a pointer of type T.
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// It may be used as an Input[*T].
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//
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// PtrOutput is a simpler variant of GPtrOutput
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// that is not parameterized on the kind of Output value it unwraps to.
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type PtrOutput[T any] struct{ *internal.OutputState }
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// Ptr builds an Output holding a pointer to the given value.
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func Ptr[T any](v T) PtrOutput[T] {
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return PtrOutput[T](Val(&v))
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}
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// PtrOf returns an output holding a pointer to the value
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// inside the given input.
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//
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// For example,
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//
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// var s pulumi.StringOutput = ... // implements Input[string]
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// ps := PtrOf(s) // implements Input[*string]
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func PtrOf[T any, I Input[T]](i I) PtrOutput[T] {
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po := Apply[T](i, func(v T) *T { return &v })
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return Cast[PtrOutput[T], *T](po)
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}
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// ElementType returns the reflected type of *T.
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func (o PtrOutput[T]) ElementType() reflect.Type {
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return typeOf[*T]()
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}
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// Untyped converts a PtrOutput[T] to a pulumi.Output.
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//
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// See [Output.Untyped] for more details.
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func (o PtrOutput[T]) Untyped() internal.Output {
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return internal.ToOutput(o)
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}
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// ToOutput converts the PtrOutput to an Output.
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func (o PtrOutput[T]) ToOutput(ctx context.Context) Output[*T] {
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return Output[*T](o)
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}
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// Elem dereferences the pointer, returning the underlying value in an Output.
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// If the pointer is nil, the returned Output holds the zero value of T.
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func (o PtrOutput[T]) Elem() Output[T] {
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return Apply[*T](o, func(v *T) T {
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if v == nil {
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var zero T
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return zero
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}
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return *v
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})
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}
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