Gh56 xmi serializer

.gitignore

@@ -355,3 +355,4 @@ MigrationBackup/
 # WinMerge bak files
 *.bak
 /switcher.json
+/.claude/settings.local.json

CLAUDE.md

@@ -31,6 +31,11 @@ Test framework: **NUnit**. Test classes use `[TestFixture]` and `[Test]` attribu
 
 ## Architecture
 
+### Code Generation
+
+- favour duplicated code in codegeneration to have staticaly defined methods that provide performance over reflection based code.
+- code generation is done by processing the UML model and creating handlebars templates
+
 ### Code Generation Pipeline
 
 Most code in this repo is **auto-generated** — files marked `THIS IS AN AUTOMATICALLY GENERATED FILE. ANY MANUAL CHANGES WILL BE OVERWRITTEN!` must not be edited directly.
@@ -104,3 +109,8 @@ Auto-generated DTOs use structured namespaces reflecting the KerML/SysML package
 - CI: GitHub Actions (`CodeQuality.yml`) — builds, tests, and runs SonarQube analysis
 - License: Apache 2.0 (code), LGPL v3.0 (metamodel files)
 - To add a new metaclass: update the UML XMI source files, then run the code generators — do not manually create AutoGen files
+
+## Quality rules
+
+- Prefer comparing 'Count' to 0 rather than using 'Any()', both for clarity and for performance
+- Use 'StringBuilder.Append(char)' instead of 'StringBuilder.Append(string)' when the input is a constant unit string

SysML2.NET.CodeGenerator.Tests/Expected/UML/Core/AutoGenEnumProvider/TransitionFeatureKindProvider.cs

@@ -73,6 +73,48 @@ public static TransitionFeatureKind Parse(ReadOnlySpan<char> value)
             throw new ArgumentException($"'{new string(value)}' is not a valid TransitionFeatureKind", nameof(value));
         }
 
+        /// <summary>
+        /// Tries to parse the <see cref="ReadOnlySpan{Char}"/> to a <see cref="TransitionFeatureKind"/>
+        /// </summary>
+        /// <param name="value">
+        /// The <see cref="ReadOnlySpan{Char}"/> that is to be parsed
+        /// </param>
+        /// <param name="result">
+        /// When this method returns, contains the <see cref="TransitionFeatureKind"/> value equivalent
+        /// to the span, if the conversion succeeded, or <c>default</c> if the conversion failed.
+        /// </param>
+        /// <returns>
+        /// <c>true</c> if <paramref name="value"/> was converted successfully; otherwise, <c>false</c>.
+        /// </returns>
+        /// <remarks>
+        /// This method is suited for  string parsing
+        /// There are zero allocations, no boxing, Fast short-circuit evaluation
+        /// JIT friendly
+        /// </remarks>
+        public static bool TryParse(ReadOnlySpan<char> value, out TransitionFeatureKind result)
+        {
+            if (value.Length == 7 && value.Equals("trigger".AsSpan(), StringComparison.OrdinalIgnoreCase))
+            {
+                result = TransitionFeatureKind.Trigger;
+                return true;
+            }
+
+            if (value.Length == 5 && value.Equals("guard".AsSpan(), StringComparison.OrdinalIgnoreCase))
+            {
+                result = TransitionFeatureKind.Guard;
+                return true;
+            }
+
+            if (value.Length == 6 && value.Equals("effect".AsSpan(), StringComparison.OrdinalIgnoreCase))
+            {
+                result = TransitionFeatureKind.Effect;
+                return true;
+            }
+
+            result = default;
+            return false;
+        }
+
         /// <summary>
         /// Parses the <see cref="ReadOnlySpan{Byte}"/> to a <see cref="TransitionFeatureKind"/>
         /// </summary>

SysML2.NET.CodeGenerator.Tests/Expected/UML/Core/AutoGenEnumProvider/VisibilityKindProvider.cs

@@ -73,6 +73,48 @@ public static VisibilityKind Parse(ReadOnlySpan<char> value)
             throw new ArgumentException($"'{new string(value)}' is not a valid VisibilityKind", nameof(value));
         }
 
+        /// <summary>
+        /// Tries to parse the <see cref="ReadOnlySpan{Char}"/> to a <see cref="VisibilityKind"/>
+        /// </summary>
+        /// <param name="value">
+        /// The <see cref="ReadOnlySpan{Char}"/> that is to be parsed
+        /// </param>
+        /// <param name="result">
+        /// When this method returns, contains the <see cref="VisibilityKind"/> value equivalent
+        /// to the span, if the conversion succeeded, or <c>default</c> if the conversion failed.
+        /// </param>
+        /// <returns>
+        /// <c>true</c> if <paramref name="value"/> was converted successfully; otherwise, <c>false</c>.
+        /// </returns>
+        /// <remarks>
+        /// This method is suited for  string parsing
+        /// There are zero allocations, no boxing, Fast short-circuit evaluation
+        /// JIT friendly
+        /// </remarks>
+        public static bool TryParse(ReadOnlySpan<char> value, out VisibilityKind result)
+        {
+            if (value.Length == 7 && value.Equals("private".AsSpan(), StringComparison.OrdinalIgnoreCase))
+            {
+                result = VisibilityKind.Private;
+                return true;
+            }
+
+            if (value.Length == 9 && value.Equals("protected".AsSpan(), StringComparison.OrdinalIgnoreCase))
+            {
+                result = VisibilityKind.Protected;
+                return true;
+            }
+
+            if (value.Length == 6 && value.Equals("public".AsSpan(), StringComparison.OrdinalIgnoreCase))
+            {
+                result = VisibilityKind.Public;
+                return true;
+            }
+
+            result = default;
+            return false;
+        }
+
         /// <summary>
         /// Parses the <see cref="ReadOnlySpan{Byte}"/> to a <see cref="VisibilityKind"/>
         /// </summary>