Source Generator

SpanExtensions.sln

@@ -5,16 +5,27 @@ VisualStudioVersion = 17.5.33627.172
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "SpanExtensions", "src\SpanExtensions.csproj", "{75DE5AFD-663E-415D-9B95-6BC513BD4A07}"
 EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "SourceGenerators", "src\SourceGenerators\SourceGenerators.csproj", "{F21A6902-D205-4127-8DF4-49B5548BF28F}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
+		DebugGenerators|Any CPU = DebugGenerators|Any CPU
 		Release|Any CPU = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(ProjectConfigurationPlatforms) = postSolution
 		{75DE5AFD-663E-415D-9B95-6BC513BD4A07}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{75DE5AFD-663E-415D-9B95-6BC513BD4A07}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{75DE5AFD-663E-415D-9B95-6BC513BD4A07}.DebugGenerators|Any CPU.ActiveCfg = DebugGenerators|Any CPU
+		{75DE5AFD-663E-415D-9B95-6BC513BD4A07}.DebugGenerators|Any CPU.Build.0 = DebugGenerators|Any CPU
 		{75DE5AFD-663E-415D-9B95-6BC513BD4A07}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{75DE5AFD-663E-415D-9B95-6BC513BD4A07}.Release|Any CPU.Build.0 = Release|Any CPU
+		{F21A6902-D205-4127-8DF4-49B5548BF28F}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{F21A6902-D205-4127-8DF4-49B5548BF28F}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{F21A6902-D205-4127-8DF4-49B5548BF28F}.DebugGenerators|Any CPU.ActiveCfg = DebugGenerators|Any CPU
+		{F21A6902-D205-4127-8DF4-49B5548BF28F}.DebugGenerators|Any CPU.Build.0 = DebugGenerators|Any CPU
+		{F21A6902-D205-4127-8DF4-49B5548BF28F}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{F21A6902-D205-4127-8DF4-49B5548BF28F}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

src/InternalExtensions.cs

@@ -0,0 +1,41 @@
+using System;
+
+
+namespace SpanExtensions
+{
+    static class InternalExtensions
+    {
+        /// <summary>
+        /// Indicates whether the specified span contains only white-space characters.
+        /// </summary>
+        /// <param name="span">The source span.</param>
+        /// <returns><see langword="true"/> if the span contains only whitespace characters, <see langword="false"/> otherwise.</returns>
+        public static bool IsWhiteSpace(this Span<char> span)
+        {
+            return ((ReadOnlySpan<char>)span).IsWhiteSpace();
+        }
+
+#if !NETCOREAPP3_0_OR_GREATER
+        /// <summary>
+        /// Removes all leading and trailing white-space characters from the span.
+        /// </summary>
+        /// <param name="span">The source span from which the characters are removed.</param>
+        /// <returns>The trimmed character span.</returns>
+        public static Span<char> Trim(this Span<char> span)
+        {
+            ReadOnlySpan<char> rospan = span;
+            ReadOnlySpan<char> leftTrimmed = rospan.TrimStart();
+            ReadOnlySpan<char> trimmed = rospan.TrimEnd();
+
+            if(span.Length == trimmed.Length)
+            {
+                return span;
+            }
+            else
+            {
+                return span.Slice(rospan.Length - leftTrimmed.Length, trimmed.Length);
+            }
+        }
+#endif
+    }
+}