Add canonical instance encoding for constants

2026-07-27 13:11:59 -07:00 · 2024-07-07 15:34:27 -05:00
parent 7d408659dc
commit 3192685f82
5 changed files with 190 additions and 129 deletions
@@ -0,0 +1,79 @@
+using Microsoft.Iris.Markup;
+using System;
+using System.Linq;
+
+namespace Microsoft.Iris.Asm.Models;
+
+public record ConstantDirective : Directive
+{
+    public ConstantDirective(string name, QualifiedTypeName typeName, string constructor) : base("constant")
+    {
+        Name = name;
+        TypeName = typeName;
+        Constructor = constructor;
+    }
+
+    public string Name { get; }
+    public QualifiedTypeName TypeName { get; }
+    public string Constructor { get; }
+    public MarkupConstantPersistMode PersistMode { get; init; }
+
+    public override string ToString() => $"{base.ToString()} {Name} = {Constructor}";
+}
+
+public record StringEncodedConstantDirective : ConstantDirective
+{
+    public StringEncodedConstantDirective(string name, QualifiedTypeName typeName, string content)
+        : base(name, typeName, $"{typeName}.str({content})")
+    {
+        Content = content;
+        PersistMode = MarkupConstantPersistMode.FromString;
+    }
+
+    public string Content { get; }
+
+    public override string ToString() => base.ToString();
+}
+
+public record BinaryEncodedConstantDirective : ConstantDirective
+{
+    public BinaryEncodedConstantDirective(string name, QualifiedTypeName typeName, byte[] content)
+        : base(name, typeName, GetConstructor(typeName, content))
+    {
+        Content = content;
+        PersistMode = MarkupConstantPersistMode.Binary;
+    }
+
+    public byte[] Content { get; }
+
+    public override string ToString() => base.ToString();
+
+    private static string GetConstructor(QualifiedTypeName typeName, byte[] content)
+    {
+        string contentStr;
+        if (content.Length == 1)
+            contentStr = $"0x{content[0]:X2}";
+        else if (content.Length == 2)
+            contentStr = $"0x{BitConverter.ToUInt16(content, 0):X4}";
+        else if (content.Length == 4)
+            contentStr = $"0x{BitConverter.ToUInt32(content, 0):X8}";
+        else
+            contentStr = string.Join(", ", content.Select(b => $"0x{b:X2}"));
+
+        return $"{typeName}.bin({contentStr})";
+    }
+}
+
+public record CanonicalInstanceConstantDirective : ConstantDirective
+{
+    public CanonicalInstanceConstantDirective(string name, QualifiedTypeName typeName, string canonicalName)
+        : base(name, typeName, $"{typeName}.can({canonicalName})")
+    {
+        CanonicalName = canonicalName;
+        PersistMode = MarkupConstantPersistMode.Canonical;
+    }
+
+    public string CanonicalName { get; }
+
+    public override string ToString() => base.ToString();
+}