Added StringComparer property to TemplateContext

Fluid.Tests/TemplateContextTests.cs

@@ -160,6 +160,16 @@ public async Task ShouldNotReleaseScopeAsynchronously()
 
             Assert.Equal("101", output);
         }
+
+        [Fact]
+        public void ShouldUseStringComparer()
+        {
+            var context = new TemplateContext();
+            context.StringComparer = StringComparer.InvariantCultureIgnoreCase;
+            context.SetValue("PageState", "insert");
+
+            Assert.Equal("insert", context.GetValue("pageState").ToStringValue());
+        }
 
         private class TestClass
         {

Fluid/Scope.cs

@@ -11,25 +11,31 @@ public sealed class Scope
         public Scope()
         {
             Parent = null;
+            StringComparer = StringComparer.CurrentCulture;
         }
 
         public Scope(Scope parent)
         {
             Parent = parent;
+            StringComparer = parent.StringComparer;
         }
 
         public Scope(Scope parent, bool forLoopScope)
         {
             if (forLoopScope && parent == null) ExceptionHelper.ThrowArgumentNullException(nameof(parent));
 
             Parent = parent;
-
             // A ForLoop scope reads and writes its values in the parent scope.
             // Internal accessors to the inner properties grant access to the local properties.
             _forLoopScope = forLoopScope;
-
-            _properties = new Dictionary<string, FluidValue>();
+            StringComparer = parent.StringComparer;
+            _properties = new Dictionary<string, FluidValue>(StringComparer);
         }
+
+        /// <summary>
+        /// Gets or sets the <see cref="StringComparer"/> used for matching keys of this scope values.
+        /// </summary>
+        public StringComparer StringComparer { get; set; }
 
         /// <summary>
         /// Gets the own properties of the scope
@@ -115,7 +121,7 @@ public void SetValue(string name, FluidValue value)
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public void SetOwnValue(string name, FluidValue value)
         {
-            _properties ??= new Dictionary<string, FluidValue>();
+            _properties ??= new Dictionary<string, FluidValue>(StringComparer);
             _properties[name] = value ?? NilValue.Instance;
         }
 
@@ -138,4 +144,4 @@ public void CopyTo(Scope scope)
             }
         }
     }
-}
+}

Fluid/TemplateContext.cs

@@ -150,6 +150,15 @@ public void IncrementSteps()
         /// </summary>
         public Func<string, string, ValueTask<string>> Captured { get; set; }
 
+        /// <summary>
+        /// Gets or sets the <see cref="StringComparer"/> used for matching keys of scope values.
+        /// </summary>
+        public StringComparer StringComparer
+        {
+            get => LocalScope.StringComparer;
+            set => LocalScope.StringComparer = value;
+        }
+
         /// <summary>
         /// Creates a new isolated child scope. After than any value added to this content object will be released once
         /// <see cref="ReleaseScope" /> is called. The previous scope is linked such that its values are still available.

Fluid/TemplateOptions.cs

@@ -73,6 +73,14 @@ public class TemplateOptions
         /// </summary>
         public bool Greedy { get; set; } = true;
 
+        /// <summary>
+        /// Gets or sets the <see cref="StringComparer"/> used for matching keys of scope values.
+        /// </summary>
+        public StringComparer StringComparer
+        {
+            get => Scope.StringComparer;
+            set => Scope.StringComparer = value;
+        }
 
         public TemplateOptions()
         {