From 27f92e6c33cc6b20b74ae19fab8748806a867e44 Mon Sep 17 00:00:00 2001
From: Jan <jan@laupetin.net>
Date: Thu, 21 Nov 2019 21:46:03 +0100
Subject: [PATCH] ZoneCodeGenerator: Add Computations class for
 StructureInformation including IsUsed to check whether a structure has at
 least 1 usage

---
 .../Information/StructureInformation.cs       |  2 ++
 .../Computations/StructureComputations.cs     | 20 +++++++++++++++++++
 2 files changed, 22 insertions(+)
 create mode 100644 src/ZoneCodeGenerator/Generating/Computations/StructureComputations.cs

diff --git a/src/ZoneCodeGenerator/Domain/Information/StructureInformation.cs b/src/ZoneCodeGenerator/Domain/Information/StructureInformation.cs
index 9a65927f..25abce53 100644
--- a/src/ZoneCodeGenerator/Domain/Information/StructureInformation.cs
+++ b/src/ZoneCodeGenerator/Domain/Information/StructureInformation.cs
@@ -2,6 +2,7 @@
 using System.Collections.Generic;
 using System.Linq;
 using ZoneCodeGenerator.Domain.FastFileStructure;
+using ZoneCodeGenerator.Generating.Computations;
 using ZoneCodeGenerator.Persistence;
 
 namespace ZoneCodeGenerator.Domain.Information
@@ -33,6 +34,7 @@ namespace ZoneCodeGenerator.Domain.Information
         public bool IsLeaf { get; set; }
 
         public List<MemberInformation> NameChain { get; set; }
+        public StructureComputations Computations => new StructureComputations(this);
 
         public StructureInformation(DataTypeWithMembers type)
         {
diff --git a/src/ZoneCodeGenerator/Generating/Computations/StructureComputations.cs b/src/ZoneCodeGenerator/Generating/Computations/StructureComputations.cs
new file mode 100644
index 00000000..687a716a
--- /dev/null
+++ b/src/ZoneCodeGenerator/Generating/Computations/StructureComputations.cs
@@ -0,0 +1,20 @@
+using System.Collections.Generic;
+using System.Linq;
+using ZoneCodeGenerator.Domain;
+using ZoneCodeGenerator.Domain.Evaluation;
+using ZoneCodeGenerator.Domain.Information;
+
+namespace ZoneCodeGenerator.Generating.Computations
+{
+    class StructureComputations
+    {
+        private readonly StructureInformation information;
+
+        public bool IsUsed => information.Usages.Any();
+
+        public StructureComputations(StructureInformation information)
+        {
+            this.information = information;
+        }
+    }
+}
\ No newline at end of file