Fix warnings

YesNt.Interpreter.Generator/YesNt.Interpreter.Generator.csproj

@@ -1,6 +1,6 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFramework>netstandard2.1</TargetFramework>
+    <TargetFramework>netstandard2.0</TargetFramework>
     <LangVersion>latest</LangVersion>
     <Nullable>enable</Nullable>
     <IsRoslynComponent>true</IsRoslynComponent>

YesNt.Interpreter/Runtime/RuntimeInformation.cs

@@ -190,7 +190,9 @@ internal sealed class RuntimeInformation
         IsInFunction = false;
         IsLocalSearch = false;
         LineNumber = 0;
+#pragma warning disable S2696 // internalTaskId is a shared counter intentionally incremented by each Reset call
         TaskId = ++internalTaskId;
+#pragma warning restore S2696
     }
 
     private void ParentRuntimeInformation_OnExit(string exitMessage, bool stopAllTasks)

YesNt.Interpreter/Runtime/YesNtInterpreter.cs

@@ -439,9 +439,11 @@ public class YesNtInterpreter
             string content = runtimeInfo.Lines[i].Content;
             List<StatementHandler> matchingHandlers = [];
 
+#pragma warning disable S3267 // foreach + if is intentional here; LINQ .Where() would add overhead in this scan loop
             foreach (StatementHandler handler in statementHandlers)
             {
                 if (IsPossibleMatch(content, handler))
+#pragma warning restore S3267
                 {
                     matchingHandlers.Add(handler);
 
@@ -458,14 +460,11 @@ public class YesNtInterpreter
                     }
 
                     // Track block ends
-                    if (handler.Attribute.IsBlockEnd)
+                    if (handler.Attribute.IsBlockEnd && openBlocks.TryGetValue(handler.Attribute.Name, out Stack<int> endStack) && endStack.Count > 0)
                     {
-                        if (openBlocks.TryGetValue(handler.Attribute.Name, out Stack<int> stack) && stack.Count > 0)
-                        {
-                            int startLine = stack.Pop();
-                            runtimeInfo.BlockBoundaries[startLine] = i;
-                            runtimeInfo.BlockBoundaries[i] = startLine;
-                        }
+                        int startLine = endStack.Pop();
+                        runtimeInfo.BlockBoundaries[startLine] = i;
+                        runtimeInfo.BlockBoundaries[i] = startLine;
                     }
 
                     // Track block intermediates (e.g., else:): pop the opener, record boundary, push self

YesNt.Interpreter/Statements/CodeFlowStatements.cs

@@ -170,6 +170,7 @@ internal class CodeFlowStatements : StatementRuntimeInformation
     [Statement("end_if", SearchMode.Exact, SpaceAround.None, ConsoleColor.Green, IsBlockEnd = true)]
     public void EndIf(string _)
     {
+        // Intentionally empty: end_if is a block-boundary marker only; no runtime action needed.
     }
 
     [Statement("while", SearchMode.StartOfLine, SpaceAround.End, ConsoleColor.Green, Priority = Priority.VeryLow, Separator = ":", BlockPair = "end_while")]

YesNt.Interpreter/Statements/StringLiteralStatements.cs

@@ -19,6 +19,7 @@ internal class StringLiteralStatements : StatementRuntimeInformation
 
         StringBuilder output = new StringBuilder(args.Length);
 
+#pragma warning disable S127 // i is intentionally advanced to track position within quoted literals and escape sequences
         for (int i = 0; i < args.Length; i++)
         {
             char current = args[i];
@@ -50,6 +51,7 @@ internal class StringLiteralStatements : StatementRuntimeInformation
 
                 _ = literal.Append(ch);
             }
+#pragma warning restore S127
 
             if (!closed)
             {

YesNt.Interpreter/Utilities/FixedProcess.cs

@@ -7,6 +7,7 @@ using System.Threading;
 
 namespace YesNt.Interpreter.Utilities;
 
+/// <summary>Represents the method that handles the <see cref="FixedProcess.OutputDataReceived"/> and <see cref="FixedProcess.ErrorDataReceived"/> events.</summary>
 public delegate void DataReceivedEventHandler(object sender, DataReceivedEventArgs e);
 
 internal delegate void UserCallBack(string data);
@@ -81,6 +82,7 @@ internal class FixedProcess : Process
     }
 }
 
+/// <summary>Provides data for the <see cref="FixedProcess.OutputDataReceived"/> and <see cref="FixedProcess.ErrorDataReceived"/> events.</summary>
 public class DataReceivedEventArgs : EventArgs
 {
     internal string _data;

YesNt.Interpreter/Utilities/StringExtensions.cs

@@ -25,8 +25,6 @@ namespace YesNt.Interpreter.Utilities;
 /// </remarks>
 public static class StringExtensions
 {
-    private static readonly Dictionary<string, string> reverseReplacementRules;
-
     /// <summary>
     /// Gets the table that maps special characters to their safe-string escape codes.
     /// Keys are the original characters; values are the three-letter tilde codes.
@@ -50,10 +48,7 @@ public static class StringExtensions
         {"",   "\x01" + "emp" + "\x01" },
     };
 
-    static StringExtensions()
-    {
-        reverseReplacementRules = ReplacementRules.ToDictionary(x => x.Value, x => x.Key);
-    }
+    private static readonly Dictionary<string, string> reverseReplacementRules = ReplacementRules.ToDictionary(x => x.Value, x => x.Key);
 
     /// <summary>
     /// Encodes a string into safe-string format so that special characters cannot accidentally
@@ -109,6 +104,7 @@ public static class StringExtensions
         }
 
         StringBuilder output = new StringBuilder(stripped.Length);
+#pragma warning disable S127 // i is intentionally advanced by 4 when a 5-char escape code is consumed
         for (int i = 0; i < stripped.Length; i++)
         {
             if (stripped[i] == '\x01' && i + 4 < stripped.Length && stripped[i + 4] == '\x01')
@@ -124,6 +120,7 @@ public static class StringExtensions
 
             _ = output.Append(stripped[i]);
         }
+#pragma warning restore S127
 
         return output.ToString();
     }