Merge branch 'rework-backend'

1 files changed, 35 insertions, 0 deletions

diff --git a/dsa/DSALib/Auxiliary/Calculator/Argument.cs b/dsa/DSALib/Auxiliary/Calculator/Argument.cs
new file mode 100644
index 0000000..e681377
--- /dev/null
+++ b/dsa/DSALib/Auxiliary/Calculator/Argument.cs
@@ -0,0 +1,35 @@
+using System;
+
+namespace DSALib.Auxiliary.Calculator
+{
+    /// <summary>
+    ///     Provides an ISolvable class to save numbers. The class handles Argument checking and conversion from string to int.
+    /// </summary>
+    public class Argument : ISolvable
+    {
+        private readonly int value;
+
+        public Argument(string value)
+        {
+            // check whether the value given is an empty string
+            if (string.IsNullOrEmpty(value))
+                throw new ArgumentException("Argument kann nicht mit einem leeren string instanziert werden. ",
+                    nameof(value));
+
+            if (!int.TryParse(value, out var result))
+                throw new ArgumentException($"Kann {value} nicht in Integer konvertieren");
+
+            this.value = result;
+        }
+
+        public int Solve()
+        {
+            return value;
+        }
+
+        public override string ToString()
+        {
+            return value.ToString();
+        }
+    }
+}
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