MemoryTemplate
Represents various extensions for MemoryTemplate<T> type.
using System;
using System.Buffers;
using System.Collections.Generic;
using System.IO;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
namespace DotNext.Buffers
{
public static class MemoryTemplate
{
[StructLayout(LayoutKind.Auto)]
private readonly struct StringBuilderRenderer : IReadOnlySpanConsumer<char>, ISupplier<ReadOnlyMemory<char>, CancellationToken, ValueTask>, IConsumer<int>
{
[System.Runtime.CompilerServices.Nullable(1)]
private readonly IReadOnlyList<string> replacement;
[System.Runtime.CompilerServices.Nullable(1)]
private readonly StringBuilder output;
[System.Runtime.CompilerServices.NullableContext(1)]
internal StringBuilderRenderer(StringBuilder output, IReadOnlyList<string> replacement)
{
this.output = output;
this.replacement = replacement;
}
void IReadOnlySpanConsumer<char>.Invoke(ReadOnlySpan<char> input)
{
output.Append(input);
}
void IConsumer<int>.Invoke(int index)
{
output.Append(replacement[index]);
}
}
[StructLayout(LayoutKind.Auto)]
private readonly struct CharBufferRenderer : IReadOnlySpanConsumer<char>, ISupplier<ReadOnlyMemory<char>, CancellationToken, ValueTask>, IConsumer<int>
{
[System.Runtime.CompilerServices.Nullable(1)]
private readonly IReadOnlyList<string> replacement;
[System.Runtime.CompilerServices.Nullable(1)]
private readonly IBufferWriter<char> output;
[System.Runtime.CompilerServices.NullableContext(1)]
internal CharBufferRenderer(IBufferWriter<char> output, IReadOnlyList<string> replacement)
{
this.output = output;
this.replacement = replacement;
}
void IReadOnlySpanConsumer<char>.Invoke(ReadOnlySpan<char> input)
{
output.Write(input);
}
void IConsumer<int>.Invoke(int index)
{
output.Write(replacement[index]);
}
}
[StructLayout(LayoutKind.Auto)]
private readonly struct TextRenderer : IReadOnlySpanConsumer<char>, ISupplier<ReadOnlyMemory<char>, CancellationToken, ValueTask>, IConsumer<int>
{
[System.Runtime.CompilerServices.Nullable(1)]
private readonly IReadOnlyList<string> replacement;
[System.Runtime.CompilerServices.Nullable(1)]
private readonly TextWriter output;
[System.Runtime.CompilerServices.NullableContext(1)]
internal TextRenderer(TextWriter output, IReadOnlyList<string> replacement)
{
this.output = output;
this.replacement = replacement;
}
void IReadOnlySpanConsumer<char>.Invoke(ReadOnlySpan<char> input)
{
output.Write(input);
}
void IConsumer<int>.Invoke(int index)
{
output.Write(replacement[index]);
}
}
[System.Runtime.CompilerServices.NullableContext(1)]
public static void Render([In] [IsReadOnly] [System.Runtime.CompilerServices.Nullable(0)] ref MemoryTemplate<char> template, StringBuilder output, params string[] replacement)
{
template.Render(new StringBuilderRenderer(output, replacement));
}
[System.Runtime.CompilerServices.NullableContext(1)]
public static string Render([In] [IsReadOnly] [System.Runtime.CompilerServices.Nullable(0)] ref MemoryTemplate<char> template, params string[] replacement)
{
using (PooledArrayBufferWriter<char> pooledArrayBufferWriter = new PooledArrayBufferWriter<char>(template.Value.Length)) {
template.Render(new CharBufferRenderer(pooledArrayBufferWriter, replacement));
return new string(pooledArrayBufferWriter.WrittenArray);
}
}
[System.Runtime.CompilerServices.NullableContext(1)]
public static void Render([In] [IsReadOnly] [System.Runtime.CompilerServices.Nullable(0)] ref MemoryTemplate<char> template, TextWriter output, params string[] replacement)
{
template.Render(new TextRenderer(output, replacement));
}
}
}