Add public UTF8 TryFormat overloads to relevant types

src/libraries/System.Net.Primitives/ref/System.Net.Primitives.cs

@@ -265,6 +265,7 @@ public IPAddress(System.ReadOnlySpan<byte> address, long scopeid) { }
         public override string ToString() { throw null; }
         string IFormattable.ToString(string? format, IFormatProvider? formatProvider) { throw null; }
         public bool TryFormat(System.Span<char> destination, out int charsWritten) { throw null; }
+        public bool TryFormat(System.Span<byte> utf8Destination, out int bytesWritten) { throw null; }
         bool ISpanFormattable.TryFormat(Span<char> destination, out int charsWritten, ReadOnlySpan<char> format, IFormatProvider? provider) { throw null; }
         bool System.IUtf8SpanFormattable.TryFormat(System.Span<byte> utf8Destination, out int bytesWritten, System.ReadOnlySpan<char> format, System.IFormatProvider? provider) { throw null; }
         public static bool TryParse(System.ReadOnlySpan<char> ipSpan, [System.Diagnostics.CodeAnalysis.NotNullWhenAttribute(true)] out System.Net.IPAddress? address) { throw null; }
@@ -316,6 +317,7 @@ public IPEndPoint(System.Net.IPAddress address, int port) { }
         static bool System.ISpanParsable<System.Net.IPNetwork>.TryParse(System.ReadOnlySpan<char> s, System.IFormatProvider? provider, out System.Net.IPNetwork result) { throw null; }
         public override string ToString() { throw null; }
         public bool TryFormat(System.Span<char> destination, out int charsWritten) { throw null; }
+        public bool TryFormat(System.Span<byte> utf8Destination, out int bytesWritten) { throw null; }
         public static bool TryParse(System.ReadOnlySpan<char> s, out System.Net.IPNetwork result) { throw null; }
         public static bool TryParse(string? s, out System.Net.IPNetwork result) { throw null; }
     }

src/libraries/System.Net.Primitives/src/System/Net/IPAddress.cs

@@ -427,6 +427,13 @@ string IFormattable.ToString(string? format, IFormatProvider? formatProvider) =>
         public bool TryFormat(Span<char> destination, out int charsWritten) =>
             TryFormatCore(destination, out charsWritten);
 
+        /// <summary>Tries to format the current IP address into the provided span.</summary>
+        /// <param name="utf8Destination">When this method returns, the IP address as a span of UTF8 bytes.</param>
+        /// <param name="bytesWritten">When this method returns, the number of bytes written into the <paramref name="utf8Destination"/>.</param>
+        /// <returns><see langword="true" /> if the formatting was successful; otherwise, <see langword="false" />.</returns>
+        public bool TryFormat(Span<byte> utf8Destination, out int bytesWritten) =>
+            TryFormatCore(utf8Destination, out bytesWritten);
+
         /// <inheritdoc/>
         bool ISpanFormattable.TryFormat(Span<char> destination, out int charsWritten, ReadOnlySpan<char> format, IFormatProvider? provider) =>
             // format and provider are explicitly ignored

src/libraries/System.Net.Primitives/src/System/Net/IPNetwork.cs

@@ -251,6 +251,15 @@ public override string ToString() =>
         public bool TryFormat(Span<char> destination, out int charsWritten) =>
             destination.TryWrite(CultureInfo.InvariantCulture, $"{BaseAddress}/{(uint)PrefixLength}", out charsWritten);
 
+        /// <summary>
+        /// Attempts to write the <see cref="IPNetwork"/>'s CIDR notation to the given <paramref name="utf8Destination"/> UTF8 span and returns a value indicating whether the operation succeeded.
+        /// </summary>
+        /// <param name="utf8Destination">The destination span of UTF8 bytes.</param>
+        /// <param name="bytesWritten">When this method returns, contains the number of bytes that were written to <paramref name="utf8Destination"/>.</param>
+        /// <returns><see langword="true"/> if the formatting was succesful; otherwise <see langword="false"/>.</returns>
+        public bool TryFormat(Span<byte> utf8Destination, out int bytesWritten) =>
+            Utf8.TryWrite(utf8Destination, CultureInfo.InvariantCulture, $"{BaseAddress}/{(uint)PrefixLength}", out bytesWritten);
+
         /// <summary>
         /// Determines whether two <see cref="IPNetwork"/> instances are equal.
         /// </summary>
@@ -298,11 +307,13 @@ obj is IPNetwork other &&
 
         /// <inheritdoc />
         bool ISpanFormattable.TryFormat(Span<char> destination, out int charsWritten, ReadOnlySpan<char> format, IFormatProvider? provider) =>
+            // format and provider are ignored
             TryFormat(destination, out charsWritten);
 
         /// <inheritdoc />
         bool IUtf8SpanFormattable.TryFormat(Span<byte> utf8Destination, out int bytesWritten, ReadOnlySpan<char> format, IFormatProvider? provider) =>
-            Utf8.TryWrite(utf8Destination, CultureInfo.InvariantCulture, $"{BaseAddress}/{(uint)PrefixLength}", out bytesWritten);
+            // format and provider are ignored
+            TryFormat(utf8Destination, out bytesWritten);
 
         /// <inheritdoc />
         static IPNetwork IParsable<IPNetwork>.Parse([NotNull] string s, IFormatProvider? provider) => Parse(s);

src/libraries/System.Net.Primitives/tests/FunctionalTests/IPAddressParsing.cs

@@ -38,7 +38,7 @@ public class IPAddressParsingFormatting_Span : IPAddressParsingFormatting
         public override IPAddress Parse(string ipString) => IPAddress.Parse(ipString.AsSpan());
         public override bool TryParse(string ipString, out IPAddress address) => IPAddress.TryParse(ipString.AsSpan(), out address);
         public virtual bool TryFormat(IPAddress address, Span<char> destination, out int charsWritten) => address.TryFormat(destination, out charsWritten);
-        public virtual bool TryFormat(IPAddress address, Span<byte> utf8Destination, out int bytesWritten) => ((IUtf8SpanFormattable)address).TryFormat(utf8Destination, out bytesWritten, default, null);
+        public virtual bool TryFormat(IPAddress address, Span<byte> utf8Destination, out int bytesWritten) => address.TryFormat(utf8Destination, out bytesWritten);
 
         [Theory]
         [MemberData(nameof(ValidIpv4Addresses))]

src/libraries/System.Net.Primitives/tests/FunctionalTests/IPNetworkTest.cs

@@ -266,7 +266,7 @@ public void TryFormatSpan_NotEnoughLength_ReturnsFalse(string input)
             // UTF8
             {
                 Span<byte> span = stackalloc byte[input.Length - 1];
-                Assert.False(((IUtf8SpanFormattable)network).TryFormat(span, out int bytesWritten, default, null));
+                Assert.False(network.TryFormat(span, out int bytesWritten));
                 Assert.Equal(0, bytesWritten);
             }
         }
@@ -290,7 +290,7 @@ public void TryFormatSpan_EnoughLength_Succeeds(string input)
                 // UTF8
                 {
                     Span<byte> span = stackalloc byte[input.Length + additionalLength];
-                    Assert.True(((IUtf8SpanFormattable)network).TryFormat(span, out int bytesWritten, default, null));
+                    Assert.True(network.TryFormat(span, out int bytesWritten));
                     Assert.Equal(input.Length, bytesWritten);
                     Assert.Equal(input, Encoding.UTF8.GetString(span.Slice(0, bytesWritten)));
                 }

src/libraries/System.Private.CoreLib/src/System/Buffers/Text/Utf8Formatter/Utf8Formatter.Date.L.cs

@@ -17,7 +17,7 @@ public static partial class Utf8Formatter
         //
         private static bool TryFormatDateTimeL(DateTime value, Span<byte> destination, out int bytesWritten)
         {
-            if (((IUtf8SpanFormattable)value).TryFormat(destination, out bytesWritten, "r", CultureInfo.InvariantCulture))
+            if (value.TryFormat(destination, out bytesWritten, "r", CultureInfo.InvariantCulture))
             {
                 Debug.Assert(bytesWritten == 29);
                 Ascii.ToLowerInPlace(destination.Slice(0, bytesWritten), out bytesWritten);

src/libraries/System.Private.CoreLib/src/System/Byte.cs

@@ -211,8 +211,8 @@ public bool TryFormat(Span<char> destination, out int charsWritten, [StringSynta
             return Number.TryFormatUInt32(m_value, format, provider, destination, out charsWritten);
         }
 
-        /// <inheritdoc/>
-        bool IUtf8SpanFormattable.TryFormat(Span<byte> utf8Destination, out int bytesWritten, ReadOnlySpan<char> format, IFormatProvider? provider)
+        /// <inheritdoc cref="IUtf8SpanFormattable.TryFormat" />
+        public bool TryFormat(Span<byte> utf8Destination, out int bytesWritten, [StringSyntax(StringSyntaxAttribute.NumericFormat)] ReadOnlySpan<char> format = default, IFormatProvider? provider = null)
         {
             return Number.TryFormatUInt32(m_value, format, provider, utf8Destination, out bytesWritten);
         }

src/libraries/System.Private.CoreLib/src/System/Char.cs

@@ -193,6 +193,7 @@ bool ISpanFormattable.TryFormat(Span<char> destination, out int charsWritten, Re
             return false;
         }
 
+        /// <inheritdoc cref="IUtf8SpanFormattable.TryFormat" />
         bool IUtf8SpanFormattable.TryFormat(Span<byte> utf8Destination, out int bytesWritten, ReadOnlySpan<char> format, IFormatProvider? provider) =>
             new Rune(this).TryEncodeToUtf8(utf8Destination, out bytesWritten);
 

src/libraries/System.Private.CoreLib/src/System/DateOnly.cs

@@ -784,10 +784,11 @@ public string ToString([StringSyntax(StringSyntaxAttribute.DateOnlyFormat)] stri
         /// <param name="format">A span containing the characters that represent a standard or custom format string that defines the acceptable format for destination.</param>
         /// <param name="provider">An optional object that supplies culture-specific formatting information for destination.</param>
         /// <returns>true if the formatting was successful; otherwise, false.</returns>
-        public bool TryFormat(Span<char> destination, out int charsWritten, [StringSyntax(StringSyntaxAttribute.DateOnlyFormat)] ReadOnlySpan<char> format = default(ReadOnlySpan<char>), IFormatProvider? provider = null) =>
+        public bool TryFormat(Span<char> destination, out int charsWritten, [StringSyntax(StringSyntaxAttribute.DateOnlyFormat)] ReadOnlySpan<char> format = default, IFormatProvider? provider = null) =>
             TryFormatCore(destination, out charsWritten, format, provider);
 
-        bool IUtf8SpanFormattable.TryFormat(Span<byte> utf8Destination, out int bytesWritten, [StringSyntax(StringSyntaxAttribute.DateOnlyFormat)] ReadOnlySpan<char> format, IFormatProvider? provider) =>
+        /// <inheritdoc cref="IUtf8SpanFormattable.TryFormat" />
+        public bool TryFormat(Span<byte> utf8Destination, out int bytesWritten, [StringSyntax(StringSyntaxAttribute.DateOnlyFormat)] ReadOnlySpan<char> format = default, IFormatProvider? provider = null) =>
             TryFormatCore(utf8Destination, out bytesWritten, format, provider);
 
         private bool TryFormatCore<TChar>(Span<TChar> destination, out int charsWritten, [StringSyntax(StringSyntaxAttribute.DateOnlyFormat)] ReadOnlySpan<char> format, IFormatProvider? provider = null)

src/libraries/System.Private.CoreLib/src/System/DateTime.cs

@@ -1806,7 +1806,8 @@ public string ToString([StringSyntax(StringSyntaxAttribute.DateTimeFormat)] stri
         public bool TryFormat(Span<char> destination, out int charsWritten, [StringSyntax(StringSyntaxAttribute.DateTimeFormat)] ReadOnlySpan<char> format = default, IFormatProvider? provider = null) =>
             DateTimeFormat.TryFormat(this, destination, out charsWritten, format, provider);
 
-        bool IUtf8SpanFormattable.TryFormat(Span<byte> utf8Destination, out int bytesWritten, [StringSyntax(StringSyntaxAttribute.DateTimeFormat)] ReadOnlySpan<char> format, IFormatProvider? provider) =>
+        /// <inheritdoc cref="IUtf8SpanFormattable.TryFormat" />
+        public bool TryFormat(Span<byte> utf8Destination, out int bytesWritten, [StringSyntax(StringSyntaxAttribute.DateTimeFormat)] ReadOnlySpan<char> format = default, IFormatProvider? provider = null) =>
             DateTimeFormat.TryFormat(this, utf8Destination, out bytesWritten, format, provider);
 
         public DateTime ToUniversalTime()

src/libraries/System.Private.CoreLib/src/System/DateTimeOffset.cs

@@ -862,7 +862,8 @@ public string ToString([StringSyntax(StringSyntaxAttribute.DateTimeFormat)] stri
         public bool TryFormat(Span<char> destination, out int charsWritten, [StringSyntax(StringSyntaxAttribute.DateTimeFormat)] ReadOnlySpan<char> format = default, IFormatProvider? formatProvider = null) =>
             DateTimeFormat.TryFormat(ClockDateTime, destination, out charsWritten, format, formatProvider, Offset);
 
-        bool IUtf8SpanFormattable.TryFormat(Span<byte> utf8Destination, out int bytesWritten, [StringSyntax(StringSyntaxAttribute.DateTimeFormat)] ReadOnlySpan<char> format, IFormatProvider? formatProvider) =>
+        /// <inheritdoc cref="IUtf8SpanFormattable.TryFormat" />
+        public bool TryFormat(Span<byte> utf8Destination, out int bytesWritten, [StringSyntax(StringSyntaxAttribute.DateTimeFormat)] ReadOnlySpan<char> format = default, IFormatProvider? formatProvider = null) =>
             DateTimeFormat.TryFormat(ClockDateTime, utf8Destination, out bytesWritten, format, formatProvider, Offset);
 
         public DateTimeOffset ToUniversalTime() =>

src/libraries/System.Private.CoreLib/src/System/Decimal.cs

@@ -504,8 +504,8 @@ public bool TryFormat(Span<char> destination, out int charsWritten, [StringSynta
             return Number.TryFormatDecimal(this, format, NumberFormatInfo.GetInstance(provider), destination, out charsWritten);
         }
 
-        /// <inheritdoc/>
-        bool IUtf8SpanFormattable.TryFormat(Span<byte> utf8Destination, out int bytesWritten, ReadOnlySpan<char> format, IFormatProvider? provider)
+        /// <inheritdoc cref="IUtf8SpanFormattable.TryFormat" />
+        public bool TryFormat(Span<byte> utf8Destination, out int bytesWritten, [StringSyntax(StringSyntaxAttribute.NumericFormat)] ReadOnlySpan<char> format = default, IFormatProvider? provider = null)
         {
             return Number.TryFormatDecimal(this, format, NumberFormatInfo.GetInstance(provider), utf8Destination, out bytesWritten);
         }

src/libraries/System.Private.CoreLib/src/System/Double.cs

@@ -366,8 +366,8 @@ public bool TryFormat(Span<char> destination, out int charsWritten, [StringSynta
             return Number.TryFormatDouble(m_value, format, NumberFormatInfo.GetInstance(provider), destination, out charsWritten);
         }
 
-        /// <inheritdoc/>
-        bool IUtf8SpanFormattable.TryFormat(Span<byte> utf8Destination, out int bytesWritten, ReadOnlySpan<char> format, IFormatProvider? provider)
+        /// <inheritdoc cref="IUtf8SpanFormattable.TryFormat" />
+        public bool TryFormat(Span<byte> utf8Destination, out int bytesWritten, [StringSyntax(StringSyntaxAttribute.NumericFormat)] ReadOnlySpan<char> format = default, IFormatProvider? provider = null)
         {
             return Number.TryFormatDouble(m_value, format, NumberFormatInfo.GetInstance(provider), utf8Destination, out bytesWritten);
         }

src/libraries/System.Private.CoreLib/src/System/Globalization/DateTimeFormat.cs

@@ -770,7 +770,7 @@ internal static void FormatFraction<TChar>(ref ValueListBuilder<TChar> result, i
             int charCount;
             bool formatted = typeof(TChar) == typeof(char) ?
                 fraction.TryFormat(MemoryMarshal.Cast<TChar, char>(chars), out charCount, fractionFormat, CultureInfo.InvariantCulture) :
-                ((IUtf8SpanFormattable)fraction).TryFormat(MemoryMarshal.Cast<TChar, byte>(chars), out charCount, fractionFormat, CultureInfo.InvariantCulture);
+                fraction.TryFormat(MemoryMarshal.Cast<TChar, byte>(chars), out charCount, fractionFormat, CultureInfo.InvariantCulture);
             Debug.Assert(charCount != 0);
             result.Append(chars.Slice(0, charCount));
         }

src/libraries/System.Private.CoreLib/src/System/Half.cs

@@ -540,8 +540,8 @@ public bool TryFormat(Span<char> destination, out int charsWritten, [StringSynta
             return Number.TryFormatHalf(this, format, NumberFormatInfo.GetInstance(provider), destination, out charsWritten);
         }
 
-        /// <inheritdoc/>
-        bool IUtf8SpanFormattable.TryFormat(Span<byte> utf8Destination, out int bytesWritten, ReadOnlySpan<char> format, IFormatProvider? provider)
+        /// <inheritdoc cref="IUtf8SpanFormattable.TryFormat" />
+        public bool TryFormat(Span<byte> utf8Destination, out int bytesWritten, [StringSyntax(StringSyntaxAttribute.NumericFormat)] ReadOnlySpan<char> format = default, IFormatProvider? provider = null)
         {
             return Number.TryFormatHalf(this, format, NumberFormatInfo.GetInstance(provider), utf8Destination, out bytesWritten);
         }

src/libraries/System.Private.CoreLib/src/System/Int128.cs

@@ -119,8 +119,8 @@ public bool TryFormat(Span<char> destination, out int charsWritten, [StringSynta
             return Number.TryFormatInt128(this, format, provider, destination, out charsWritten);
         }
 
-        /// <inheritdoc/>
-        bool IUtf8SpanFormattable.TryFormat(Span<byte> utf8Destination, out int bytesWritten, ReadOnlySpan<char> format, IFormatProvider? provider)
+        /// <inheritdoc cref="IUtf8SpanFormattable.TryFormat" />
+        public bool TryFormat(Span<byte> utf8Destination, out int bytesWritten, [StringSyntax(StringSyntaxAttribute.NumericFormat)] ReadOnlySpan<char> format = default, IFormatProvider? provider = null)
         {
             return Number.TryFormatInt128(this, format, provider, utf8Destination, out bytesWritten);
         }

src/libraries/System.Private.CoreLib/src/System/Int16.cs

@@ -119,8 +119,8 @@ public bool TryFormat(Span<char> destination, out int charsWritten, [StringSynta
             return Number.TryFormatInt32(m_value, 0x0000FFFF, format, provider, destination, out charsWritten);
         }
 
-        /// <inheritdoc/>
-        bool IUtf8SpanFormattable.TryFormat(Span<byte> utf8Destination, out int bytesWritten, ReadOnlySpan<char> format, IFormatProvider? provider)
+        /// <inheritdoc cref="IUtf8SpanFormattable.TryFormat" />
+        public bool TryFormat(Span<byte> utf8Destination, out int bytesWritten, [StringSyntax(StringSyntaxAttribute.NumericFormat)] ReadOnlySpan<char> format = default, IFormatProvider? provider = null)
         {
             return Number.TryFormatInt32(m_value, 0x0000FFFF, format, provider, utf8Destination, out bytesWritten);
         }

src/libraries/System.Private.CoreLib/src/System/Int32.cs

@@ -129,8 +129,8 @@ public bool TryFormat(Span<char> destination, out int charsWritten, [StringSynta
             return Number.TryFormatInt32(m_value, ~0, format, provider, destination, out charsWritten);
         }
 
-        /// <inheritdoc/>
-        bool IUtf8SpanFormattable.TryFormat(Span<byte> utf8Destination, out int bytesWritten, ReadOnlySpan<char> format, IFormatProvider? provider)
+        /// <inheritdoc cref="IUtf8SpanFormattable.TryFormat" />
+        public bool TryFormat(Span<byte> utf8Destination, out int bytesWritten, [StringSyntax(StringSyntaxAttribute.NumericFormat)] ReadOnlySpan<char> format = default, IFormatProvider? provider = null)
         {
             return Number.TryFormatInt32(m_value, ~0, format, provider, utf8Destination, out bytesWritten);
         }

src/libraries/System.Private.CoreLib/src/System/Int64.cs

@@ -126,8 +126,8 @@ public bool TryFormat(Span<char> destination, out int charsWritten, [StringSynta
             return Number.TryFormatInt64(m_value, format, provider, destination, out charsWritten);
         }
 
-        /// <inheritdoc/>
-        bool IUtf8SpanFormattable.TryFormat(Span<byte> utf8Destination, out int bytesWritten, ReadOnlySpan<char> format, IFormatProvider? provider)
+        /// <inheritdoc cref="IUtf8SpanFormattable.TryFormat" />
+        public bool TryFormat(Span<byte> utf8Destination, out int bytesWritten, [StringSyntax(StringSyntaxAttribute.NumericFormat)] ReadOnlySpan<char> format = default, IFormatProvider? provider = null)
         {
             return Number.TryFormatInt64(m_value, format, provider, utf8Destination, out bytesWritten);
         }

src/libraries/System.Private.CoreLib/src/System/IntPtr.cs

@@ -211,9 +211,9 @@ public int CompareTo(nint value)
         public bool TryFormat(Span<char> destination, out int charsWritten, [StringSyntax(StringSyntaxAttribute.NumericFormat)] ReadOnlySpan<char> format = default, IFormatProvider? provider = null) =>
             ((nint_t)_value).TryFormat(destination, out charsWritten, format, provider);
 
-        /// <inheritdoc/>
-        bool IUtf8SpanFormattable.TryFormat(Span<byte> utf8Destination, out int bytesWritten, ReadOnlySpan<char> format, IFormatProvider? provider) =>
-            ((IUtf8SpanFormattable)(nint_t)_value).TryFormat(utf8Destination, out bytesWritten, format, provider);
+        /// <inheritdoc cref="IUtf8SpanFormattable.TryFormat" />
+        public bool TryFormat(Span<byte> utf8Destination, out int bytesWritten, [StringSyntax(StringSyntaxAttribute.NumericFormat)] ReadOnlySpan<char> format = default, IFormatProvider? provider = null) =>
+            ((nint_t)_value).TryFormat(utf8Destination, out bytesWritten, format, provider);
 
         public static nint Parse(string s) => (nint)nint_t.Parse(s);
         public static nint Parse(string s, NumberStyles style) => (nint)nint_t.Parse(s, style);