Set up dummy error messages

SemDiff.Core/Diagnostics.cs

@@ -2,6 +2,7 @@
 using System;
 using System.Collections.Generic;
 using System.Collections.Immutable;
+using System.Threading;
 
 namespace SemDiff.Core
 {
@@ -10,25 +11,53 @@ namespace SemDiff.Core
     /// </summary>
     public class Diagnostics
     {
+        //Shared Values
+        private const string Category = "Conflicts"; //Not sure where this shows up yet
+
+        //False-Negative
+        public const string FalseNegativeDiagnosticId = "SemDiffFN"; //Like the error code (just like missing semicolon is CS1002)
+
+        private const string FalseNegativeDescription = "False-Negatives occur text based tools fail to detect a conflict that affects the semantics of the application. i.e., when the semantics of a dependant item (a called method, a base class, a variable used) has been changed in a way that changes the runtime of the application when the changes are merged.";
+
+        private const string FalseNegativeMessageFormat = "False-Negatives for type '{0}' between '{1}' and '({2})[{3}]'";
+
+        private const string FalseNegativeTitle = "Possible False-Negative condition detected";
+
+        //False-Positive
+        public const string FalsePositiveDiagnosticId = "SemDiffFP";
+
+        private const string FalsePositiveDescription = "False-Positives occur text based tools detect a conflict that affects the semantics of the application. i.e., when merge conflicts may occur, but there are no semantic differences between the conflicting changes.";
+
+        private const string FalsePositiveMessageFormat = "False-Positive between '{0}' and '({1})[{2}]'";
+
+        private const string FalsePositiveTitle = "Possible False-Positive condition detected"; //Not sure where this comes up yet
+
+        //similar to fp
+        private static readonly DiagnosticDescriptor FalseNegative = new DiagnosticDescriptor(FalseNegativeDiagnosticId, FalseNegativeTitle, FalseNegativeMessageFormat, Category, DiagnosticSeverity.Warning, isEnabledByDefault: true, description: FalseNegativeDescription);
+
+        //0 is name of file, 1 is title of pull request, 2 is url of pull request //Actual error message text (formatable string)
+        //There is a option to show this in the error list for more info
+        private static readonly DiagnosticDescriptor FalsePositive = new DiagnosticDescriptor(FalsePositiveDiagnosticId, FalsePositiveTitle, FalsePositiveMessageFormat, Category, DiagnosticSeverity.Warning, isEnabledByDefault: true, description: FalsePositiveDescription);
+
         /// <summary>
         /// The Diagnostics we support, provided for the SupportedDiagnostics property of DiagnosticAnalyzer
         /// </summary>
-        public static ImmutableArray<DiagnosticDescriptor> Supported { get; internal set; }
+        public static ImmutableArray<DiagnosticDescriptor> Supported { get; } = ImmutableArray.Create(FalsePositive, FalseNegative);
 
         /// <summary>
-        /// Converts `DetectedFalsePositive`s to Diagnostics (the class provided by Roslyn) and sends them to the function provided
+        /// Converts `DetectedFalseNegative`s to Diagnostics (the class provided by Roslyn) and sends them to the function provided
         /// </summary>
-        public static void Report(IEnumerable<DetectedFalsePositive> fps, Action<Diagnostic> reporter)
+        public static void Report(IEnumerable<DetectedFalseNegative> fps, Action<Diagnostic> reporter)
         {
-            throw new NotImplementedException();
+            reporter(Diagnostic.Create(FalseNegative, Location.None, "FileName", @"dir\dir\FileName.cs", "My pull request title", "https://github.com/semdiffdotnet/semdiff/pull/33"));
         }
 
         /// <summary>
-        /// Converts `DetectedFalseNegative`s to Diagnostics (the class provided by Roslyn) and sends them to the function provided
+        /// Converts `DetectedFalsePositive`s to Diagnostics (the class provided by Roslyn) and sends them to the function provided
         /// </summary>
-        public static void Report(IEnumerable<DetectedFalseNegative> fps, Action<Diagnostic> reporter)
+        public static void Report(IEnumerable<DetectedFalsePositive> fps, Action<Diagnostic> reporter)
         {
-            throw new NotImplementedException();
+            reporter(Diagnostic.Create(FalsePositive, Location.None, @"dir\dir\FileName.cs", "My pull request title", "https://github.com/semdiffdotnet/semdiff/pull/33"));
         }
     }
 }

SemDiff.Core/SemDiffAnalyzer.cs

@@ -21,7 +21,7 @@ private static void OnSyntaxTree(SyntaxTreeAnalysisContext context)
         {
             var filePath = context.Tree.FilePath;
             var repo = Repo.GetRepoFor(filePath);
-            if (repo == null)
+            if (repo != null)
             {
                 var fps = Analysis.ForFalsePositive(repo, context.Tree, filePath);
                 Diagnostics.Report(fps, context.ReportDiagnostic);
@@ -32,7 +32,7 @@ private static void OnSemanticModel(SemanticModelAnalysisContext context)
         {
             var filePath = context.SemanticModel.SyntaxTree.FilePath;
             var repo = Repo.GetRepoFor(filePath);
-            if (repo == null)
+            if (repo != null)
             {
                 var fns = Analysis.ForFalseNegative(repo, context.SemanticModel);
                 Diagnostics.Report(fns, context.ReportDiagnostic);