Use standard naming for Read methods.

src/Avalonia.Base/Utilities/StringTokenizer.cs

@@ -50,16 +50,16 @@ namespace Avalonia.Utilities
             }
         }
 
-        public bool NextInt32(out Int32 result, char? separator = null)
+        public bool TryReadInt32(out Int32 result, char? separator = null)
         {
-            var success = NextString(out var stringResult, separator);
+            var success = TryReadString(out var stringResult, separator);
             result = success ? int.Parse(stringResult, _formatProvider) : 0;
             return success;
         }
 
-        public int NextInt32Required(char? separator = null)
+        public int ReadInt32(char? separator = null)
         {
-            if (!NextInt32(out var result, separator))
+            if (!TryReadInt32(out var result, separator))
             {
                 throw GetFormatException();
             }
@@ -67,16 +67,16 @@ namespace Avalonia.Utilities
             return result;
         }
 
-        public bool NextDouble(out double result, char? separator = null)
+        public bool TryReadDouble(out double result, char? separator = null)
         {
-            var success = NextString(out var stringResult, separator);
+            var success = TryReadString(out var stringResult, separator);
             result = success ? double.Parse(stringResult, _formatProvider) : 0;
             return success;
         }
 
-        public double NextDoubleRequired(char? separator = null)
+        public double ReadDouble(char? separator = null)
         {
-            if (!NextDouble(out var result, separator))
+            if (!TryReadDouble(out var result, separator))
             {
                 throw GetFormatException();
             }
@@ -84,16 +84,16 @@ namespace Avalonia.Utilities
             return result;
         }
 
-        public bool NextString(out string result, char? separator = null)
+        public bool TryReadString(out string result, char? separator = null)
         {
-            var success = NextToken(separator ?? _separator);
+            var success = TryReadToken(separator ?? _separator);
             result = CurrentToken;
             return success;
         }
 
-        public string NextStringRequired(char? separator = null)
+        public string ReadString(char? separator = null)
         {
-            if (!NextString(out var result, separator))
+            if (!TryReadString(out var result, separator))
             {
                 throw GetFormatException();
             }
@@ -101,7 +101,7 @@ namespace Avalonia.Utilities
             return result;
         }
 
-        private bool NextToken(char separator)
+        private bool TryReadToken(char separator)
         {
             _tokenIndex = -1;
 

src/Avalonia.Controls/GridLength.cs

@@ -213,7 +213,7 @@ namespace Avalonia.Controls
         {
             using (var tokenizer = new StringTokenizer(s, culture))
             {
-                while (tokenizer.NextString(out var item))
+                while (tokenizer.TryReadString(out var item))
                 {
                     yield return Parse(item, culture);
                 }

src/Avalonia.Visuals/Matrix.cs

@@ -321,12 +321,12 @@ namespace Avalonia
             using (var tokenizer = new StringTokenizer(s, culture, exceptionMessage: "Invalid Matrix"))
             {
                 return new Matrix(
-                    tokenizer.NextDoubleRequired(),
-                    tokenizer.NextDoubleRequired(),
-                    tokenizer.NextDoubleRequired(),
-                    tokenizer.NextDoubleRequired(),
-                    tokenizer.NextDoubleRequired(),
-                    tokenizer.NextDoubleRequired()
+                    tokenizer.ReadDouble(),
+                    tokenizer.ReadDouble(),
+                    tokenizer.ReadDouble(),
+                    tokenizer.ReadDouble(),
+                    tokenizer.ReadDouble(),
+                    tokenizer.ReadDouble()
                 );
             }
         }

src/Avalonia.Visuals/Point.cs

@@ -177,8 +177,8 @@ namespace Avalonia
             using (var tokenizer = new StringTokenizer(s, culture, exceptionMessage: "Invalid Point"))
             {
                 return new Point(
-                    tokenizer.NextDoubleRequired(),
-                    tokenizer.NextDoubleRequired()
+                    tokenizer.ReadDouble(),
+                    tokenizer.ReadDouble()
                 );
             }
         }

src/Avalonia.Visuals/Rect.cs

@@ -494,10 +494,10 @@ namespace Avalonia
             using (var tokenizer = new StringTokenizer(s, culture, exceptionMessage: "Invalid Rect"))
             {
                 return new Rect(
-                    tokenizer.NextDoubleRequired(),
-                    tokenizer.NextDoubleRequired(),
-                    tokenizer.NextDoubleRequired(),
-                    tokenizer.NextDoubleRequired()
+                    tokenizer.ReadDouble(),
+                    tokenizer.ReadDouble(),
+                    tokenizer.ReadDouble(),
+                    tokenizer.ReadDouble()
                 );
             }
         }

src/Avalonia.Visuals/RelativePoint.cs

@@ -160,8 +160,8 @@ namespace Avalonia
         {
             using (var tokenizer = new StringTokenizer(s, culture, exceptionMessage: "Invalid RelativePoint"))
             {
-                var x = tokenizer.NextStringRequired();
-                var y = tokenizer.NextStringRequired();
+                var x = tokenizer.ReadString();
+                var y = tokenizer.ReadString();
 
                 var unit = RelativeUnit.Absolute;
                 var scale = 1.0;

src/Avalonia.Visuals/RelativeRect.cs

@@ -173,10 +173,10 @@ namespace Avalonia
         {
             using (var tokenizer = new StringTokenizer(s, culture, exceptionMessage: "Invalid RelativeRect"))
             {
-                var x = tokenizer.NextStringRequired();
-                var y = tokenizer.NextStringRequired();
-                var width = tokenizer.NextStringRequired();
-                var height = tokenizer.NextStringRequired();
+                var x = tokenizer.ReadString();
+                var y = tokenizer.ReadString();
+                var width = tokenizer.ReadString();
+                var height = tokenizer.ReadString();
 
                 var unit = RelativeUnit.Absolute;
                 var scale = 1.0;

src/Avalonia.Visuals/Size.cs

@@ -157,8 +157,8 @@ namespace Avalonia
             using (var tokenizer = new StringTokenizer(s, culture, exceptionMessage: "Invalid Size"))
             {
                 return new Size(
-                    tokenizer.NextDoubleRequired(),
-                    tokenizer.NextDoubleRequired());
+                    tokenizer.ReadDouble(),
+                    tokenizer.ReadDouble());
             }
         }
 

src/Avalonia.Visuals/Thickness.cs

@@ -171,13 +171,13 @@ namespace Avalonia
         {
             using (var tokenizer = new StringTokenizer(s, culture, exceptionMessage: "Invalid Thickness"))
             {
-                var a = tokenizer.NextDoubleRequired();
+                var a = tokenizer.ReadDouble();
 
-                if (tokenizer.NextDouble(out var b))
+                if (tokenizer.TryReadDouble(out var b))
                 {
-                    if (tokenizer.NextDouble(out var c))
+                    if (tokenizer.TryReadDouble(out var c))
                     {
-                        return new Thickness(a, b, c, tokenizer.NextDoubleRequired());
+                        return new Thickness(a, b, c, tokenizer.ReadDouble());
                     }
 
                     return new Thickness(a, b);