3530ba3205
* Fix resharper code issues for language usage opportunities * Fix resharper code issues for common practices and code improvements * Fix resharper code issues for potential code quality issues * Fix resharper code issues for redundancies in code * Fix xunit test output * Update changelog * Fix resharper code issues for compiler warnings * Fix resharper code issues for inconsistent naming * Add resharper solution settings file * Fix resharper code issues for potential code quality issues * Fix resharper code issues for redundancies in code * Fix resharper code issues for redundancies in symbol declarations
159 lines
6 KiB
C#
159 lines
6 KiB
C#
// Copyright 2016-2019, Pulumi Corporation
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using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.Collections.Immutable;
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using System.Linq;
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using System.Threading;
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namespace Pulumi
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{
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/// <summary>
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/// A list of values that can be passed in as the arguments to a <see cref="Resource"/>.
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/// The individual values are themselves <see cref="Input{T}"/>s. i.e. the individual values
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/// can be concrete values or <see cref="Output{T}"/>s.
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/// <para/>
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/// <see cref="InputList{T}"/> differs from a normal <see cref="IList{T}"/> in that it is itself
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/// an <see cref="Input{T}"/>. For example, a <see cref="Resource"/> that accepts an <see
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/// cref="InputList{T}"/> will accept not just a list but an <see cref="Output{T}"/>
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/// of a list. This is important for cases where the <see cref="Output{T}"/>
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/// list from some <see cref="Resource"/> needs to be passed into another <see
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/// cref="Resource"/>. Or for cases where creating the list invariably produces an <see
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/// cref="Output{T}"/> because its resultant value is dependent on other <see
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/// cref="Output{T}"/>s.
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/// <para/>
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/// This benefit of <see cref="InputList{T}"/> is also a limitation. Because it represents a
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/// list of values that may eventually be created, there is no way to simply iterate over, or
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/// access the elements of the list synchronously.
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/// <para/>
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/// <see cref="InputList{T}"/> is designed to be easily used in object and collection
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/// initializers. For example, a resource that accepts a list of inputs can be written in
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/// either of these forms:
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/// <para/>
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/// <code>
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/// new SomeResource("name", new SomeResourceArgs {
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/// ListProperty = { Value1, Value2, Value3 },
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/// });
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/// </code>
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/// <para/>
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/// or
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/// <code>
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/// new SomeResource("name", new SomeResourceArgs {
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/// ListProperty = new [] { Value1, Value2, Value3 },
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/// });
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/// </code>
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/// </summary>
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public sealed class InputList<T> : Input<ImmutableArray<T>>, IEnumerable, IAsyncEnumerable<Input<T>>
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{
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public InputList() : this(Output.Create(ImmutableArray<T>.Empty))
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{
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}
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private InputList(Output<ImmutableArray<T>> values)
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: base(values)
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{
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}
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public void Add(params Input<T>[] inputs)
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{
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// Make an Output from the values passed in, mix in with our own Output, and combine
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// both to produce the final array that we will now point at.
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_outputValue = Output.Concat(_outputValue, Output.All(inputs));
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}
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/// <summary>
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/// Concatenates the values in this list with the values in <paramref name="other"/>,
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/// returning the concatenated sequence in a new <see cref="InputList{T}"/>.
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/// </summary>
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public InputList<T> Concat(InputList<T> other)
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=> Output.Concat(_outputValue, other._outputValue);
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internal InputList<T> Clone()
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=> new InputList<T>(_outputValue);
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#region construct from unary
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public static implicit operator InputList<T>(T value)
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=> ImmutableArray.Create<Input<T>>(value);
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public static implicit operator InputList<T>(Output<T> value)
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=> ImmutableArray.Create<Input<T>>(value);
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public static implicit operator InputList<T>(Input<T> value)
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=> ImmutableArray.Create(value);
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#endregion
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#region construct from array
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public static implicit operator InputList<T>(T[] values)
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=> ImmutableArray.CreateRange(values.Select(v => (Input<T>)v));
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public static implicit operator InputList<T>(Output<T>[] values)
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=> ImmutableArray.CreateRange(values.Select(v => (Input<T>)v));
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public static implicit operator InputList<T>(Input<T>[] values)
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=> ImmutableArray.CreateRange(values);
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#endregion
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#region construct from list
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public static implicit operator InputList<T>(List<T> values)
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=> ImmutableArray.CreateRange(values);
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public static implicit operator InputList<T>(List<Output<T>> values)
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=> ImmutableArray.CreateRange(values);
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public static implicit operator InputList<T>(List<Input<T>> values)
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=> ImmutableArray.CreateRange(values);
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#endregion
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#region construct from immutable array
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public static implicit operator InputList<T>(ImmutableArray<T> values)
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=> values.SelectAsArray(v => (Input<T>)v);
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public static implicit operator InputList<T>(ImmutableArray<Output<T>> values)
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=> values.SelectAsArray(v => (Input<T>)v);
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public static implicit operator InputList<T>(ImmutableArray<Input<T>> values)
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=> Output.All(values);
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#endregion
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#region construct from Output of some list type.
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public static implicit operator InputList<T>(Output<T[]> values)
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=> values.Apply(ImmutableArray.CreateRange);
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public static implicit operator InputList<T>(Output<List<T>> values)
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=> values.Apply(ImmutableArray.CreateRange);
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public static implicit operator InputList<T>(Output<IEnumerable<T>> values)
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=> values.Apply(ImmutableArray.CreateRange);
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public static implicit operator InputList<T>(Output<ImmutableArray<T>> values)
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=> new InputList<T>(values);
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#endregion
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#region IEnumerable
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IEnumerator IEnumerable.GetEnumerator()
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=> throw new NotSupportedException($"A {GetType().FullName} cannot be synchronously enumerated. Use {nameof(GetAsyncEnumerator)} instead.");
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public async IAsyncEnumerator<Input<T>> GetAsyncEnumerator(CancellationToken cancellationToken)
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{
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var data = await _outputValue.GetValueAsync().ConfigureAwait(false);
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foreach (var value in data)
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{
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yield return value;
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}
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}
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#endregion
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}
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}
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