Added new source location class (#664)

src/Persistence/Models/SourceLocation.cs

@@ -0,0 +1,55 @@
+// Copyright (c) Microsoft Corporation.
+// Licensed under the MIT License.
+
+namespace Microsoft.PowerPlatform.PowerApps.Persistence.Models;
+
+/// <summary>
+/// Source location
+/// </summary>
+[DebuggerDisplay("l:{Line}, c:{Column}, f:{FilePath}")]
+public record SourceLocation
+{
+    /// <summary>
+    /// File path
+    /// </summary>
+    public string? FilePath { get; init; }
+    public int? Line { get; init; }
+    public int? Column { get; init; }
+
+    /// <summary>
+    /// Default constructor
+    /// </summary>
+    public SourceLocation()
+    {
+    }
+
+    /// <summary>
+    /// Parameterized constructor
+    /// </summary>
+    /// <param name="filePath"></param>
+    /// <param name="line"></param>
+    /// <param name="column"></param>
+    public SourceLocation(string? filePath, int? line, int? column)
+    {
+        FilePath = filePath;
+
+        if (line != null && line < 0)
+            throw new ArgumentOutOfRangeException(nameof(line));
+        Line = line;
+
+        if (column != null && column < 0)
+            throw new ArgumentOutOfRangeException(nameof(column));
+        Column = column;
+    }
+
+    /// <summary>
+    /// Copy constructor 
+    /// </summary>
+    /// <param name="sourceLocation"></param>
+    public SourceLocation(SourceLocation sourceLocation)
+    {
+        FilePath = sourceLocation.FilePath;
+        Line = sourceLocation.Line;
+        Column = sourceLocation.Column;
+    }
+}