mirror of
https://github.com/aharabada/glitchy-engine-beef.git
synced 2026-09-05 13:01:52 +00:00
767 lines
23 KiB
C#
767 lines
23 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Net.Mail;
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using System.Numerics;
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using System.Text;
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using Microsoft.CodeAnalysis;
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using Microsoft.CodeAnalysis.CSharp;
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using Microsoft.CodeAnalysis.CSharp.Syntax;
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using static ScriptCoreGenerator.VectorSyntaxReceiver;
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namespace ScriptCoreGenerator;
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[Generator]
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public class VectorGenerator : ISourceGenerator
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{
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public static readonly string[] ComponentNames = {"X", "Y", "Z", "W"};
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public static readonly string[] LowerComponentNames = {"x", "y", "z", "w"};
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private GeneratorExecutionContext _context;
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public void Execute(GeneratorExecutionContext context)
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{
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_context = context;
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var receiver = (VectorSyntaxReceiver)context.SyntaxReceiver;
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if (receiver == null) return;
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StringBuilder builder = new();
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//foreach(var vector in receiver.Vectors)
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//{
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// var symbol = context.Compilation.GetSymbolsWithName(vector.VectorName);
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// var firstSym = symbol.FirstOrDefault();
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// context.ReportDiagnostic(Diagnostic.Create(
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// new DiagnosticDescriptor(
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// "SG0001",
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// "Non-void method return type",
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// "Type {0} iscool!.",
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// "yeet",
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// DiagnosticSeverity.Error,
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// true), firstSym?.Locations.FirstOrDefault(), firstSym?.Name));
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// //if(symbol.ReturnType.SpecialType != SpecialType.System_Void)
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// //{
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// // context.ReportDiagnostic(Diagnostic.Create(
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// // new DiagnosticDescriptor(
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// // "SG0001",
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// // "Non-void method return type",
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// // "Method {0} returns {1}. All methods must return void.",
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// // "yeet",
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// // DiagnosticSeverity.Error,
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// // true), symbol.Locations.FirstOrDefault(), symbol.Name, symbol.ReturnType.Name));
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// //}
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//}
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foreach (var vector in receiver.Vectors)
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{
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builder.Clear();
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// Copy all usings from the original file
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builder.AppendLine(vector.Struct.GetParent<CompilationUnitSyntax>().Usings.ToFullString());
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builder.Append($$"""
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namespace {{vector.Struct.GetNamespace()}};
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public partial struct {{vector.VectorName}}
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{
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""");
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GenerateFields(vector, builder);
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GenerateCasts(vector, builder);
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GenerateConstructors(vector, builder);
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GenerateArrayAccess(vector, builder);
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GenerateEqualityOperators(vector, builder);
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if (receiver.ComparableReceiver.ComparableVectors.Contains(vector.VectorName))
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{
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GenerateComparisonOperators(vector, builder);
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}
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if (receiver.MathReceiver.MathVectors.Contains(vector.VectorName))
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{
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GenerateMathOperators(vector, builder);
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}
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if (receiver.LogicReceiver.LogicVectors.Contains(vector.VectorName))
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{
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GenerateLogicOperators(vector, builder);
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}
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foreach (var cast in receiver.CastReceiver.VectorCasts.Where(c => c.FromType == vector.VectorName))
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{
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VectorDefinition toVectorDefinition = receiver.Vectors.First(v => v.VectorName == cast.ToType);
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GenerateCastOperator(cast, vector, toVectorDefinition, builder);
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}
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GenerateSwizzle(vector, builder);
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builder.Append('}');
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context.AddSource($"{vector.VectorName}.g.cs", builder.ToString());
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}
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}
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private void GenerateCastOperator(VectorCastSyntaxReceiver.VectorCast cast, VectorDefinition fromVector, VectorDefinition toVector, StringBuilder builder)
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{
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if (fromVector.ComponentCount != toVector.ComponentCount)
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{
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_context.ReportDiagnostic(Diagnostic.Create(
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new DiagnosticDescriptor(
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"SG0001",
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"Vector-Dimensions don't match for cast.",
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$"Cannot cast from \"{fromVector.VectorName}\" to \"{toVector.VectorName}\" because the dimensions don't match.",
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"Vector Generator",
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DiagnosticSeverity.Error,
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true), fromVector.Struct.GetLocation()));
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return;
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}
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StringBuilder castBuilder = new();
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for (int i = 0; i < fromVector.ComponentCount; i++)
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{
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if (i != 0)
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castBuilder.Append(", ");
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castBuilder.Append($"({toVector.ElementTypeName})value.{ComponentNames[i]}");
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}
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builder.Append($$"""
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public static {{(cast.IsExplicit ? "explicit" : "implicit")}} operator {{cast.ToType}}({{cast.FromType}} value)
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{
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return new {{cast.ToType}}({{castBuilder}});
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}
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""");
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}
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private void GenerateFields(VectorDefinition vector, StringBuilder builder)
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{
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builder.Append($"\tpublic {vector.ElementTypeName} ");
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for (int i = 0; i < vector.ComponentCount; i++)
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{
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if (i != 0)
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builder.Append(", ");
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builder.Append(ComponentNames[i]);
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}
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builder.Append(";\n\n");
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}
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private void GenerateCasts(VectorDefinition vector, StringBuilder builder)
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{
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StringBuilder castBuilder = new();
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for (int i = 0; i < vector.ComponentCount; i++)
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{
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if (i != 0)
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castBuilder.Append(", ");
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castBuilder.Append("value");
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}
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builder.Append($$"""
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public static implicit operator {{vector.VectorName}}({{vector.ElementTypeName}} value)
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{
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return new {{vector.VectorName}}({{castBuilder}});
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}
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""");
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// ???
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// StringBuilder constructorBody = new();
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// for (int i = 0; i < vector.ComponentCount; i++)
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// {
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// if (i != 0)
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// constructorBody.Append(", ");
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// constructorBody.Append("value");
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// }
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// builder.Append($$"""
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// public static implicit operator {{}}
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// """);
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// String castSingleToVector = scope $"""
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//public static implicit operator Self({typeof(T)} value)
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//{{
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// return Self({constructorBody});
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// }}
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//""";
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}
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private void GenerateConstructors(VectorDefinition vector, StringBuilder builder)
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{
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GenerateSingleConstructor(vector, builder);
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if (vector.ComponentCount == 3)
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{
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Generatefloat3Constructors(vector, builder);
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}
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else if (vector.ComponentCount == 4)
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{
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Generatefloat4Constructors(vector, builder);
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}
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}
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private void GenerateSingleConstructor(VectorDefinition vector, StringBuilder builder)
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{
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StringBuilder parameters = new();
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StringBuilder body = new();
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for (int i = 0; i < vector.ComponentCount; i++)
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{
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if (i != 0)
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parameters.Append(", ");
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parameters.Append($"{vector.ElementTypeName} {LowerComponentNames[i]}");
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}
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for (int i = 0; i < vector.ComponentCount; i++)
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{
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body.Append($"\n\t\t{ComponentNames[i]} = {LowerComponentNames[i]};");
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}
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builder.Append($$"""
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public {{vector.VectorName}} ({{parameters}})
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{{{body}}
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}
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""");
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}
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private void Generatefloat3Constructors(VectorDefinition vector, StringBuilder builder)
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{
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builder.Append($$"""
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public {{vector.VectorName}}({{vector.BaseName}}2 xy, {{vector.ElementTypeName}} z)
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{
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X = xy.X;
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Y = xy.Y;
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Z = z;
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}
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""");
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builder.Append($$"""
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public {{vector.VectorName}}({{vector.ElementTypeName}} x, {{vector.BaseName}}2 yz)
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{
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X = x;
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Y = yz.X;
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Z = yz.Y;
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}
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""");
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}
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private void Generatefloat4Constructors(VectorDefinition vector, StringBuilder builder)
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{
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builder.Append($$"""
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public {{vector.VectorName}}({{vector.BaseName}}2 xy, {{vector.BaseName}}2 zw)
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{
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//XY = xy;
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//ZW = zw;
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X = xy.X;
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Y = xy.Y;
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Z = zw.X;
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W = zw.Y;
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}
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""");
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builder.Append($$"""
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public {{vector.VectorName}}({{vector.BaseName}}2 xy, {{vector.ElementTypeName}} z, {{vector.ElementTypeName}} w)
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{
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X = xy.X;
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Y = xy.Y;
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Z = z;
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W = w;
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}
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""");
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builder.Append($$"""
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public {{vector.VectorName}}({{vector.ElementTypeName}} x, {{vector.BaseName}}2 yz, {{vector.ElementTypeName}} w)
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{
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X = x;
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Y = yz.X;
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Z = yz.Y;
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W = w;
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}
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""");
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builder.Append($$"""
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public {{vector.VectorName}}({{vector.ElementTypeName}} x, {{vector.ElementTypeName}} y, {{vector.BaseName}}2 zw)
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{
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X = x;
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Y = y;
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Z = zw.X;
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W = zw.Y;
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}
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""");
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builder.Append($$"""
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public {{vector.VectorName}}({{vector.BaseName}}3 xyz, {{vector.ElementTypeName}} w)
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{
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X = xyz.X;
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Y = xyz.Y;
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Z = xyz.Z;
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W = w;
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}
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""");
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builder.Append($$"""
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public {{vector.VectorName}}({{vector.ElementTypeName}} x, {{vector.BaseName}}3 yzw)
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{
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X = x;
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Y = yzw.X;
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Z = yzw.Y;
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W = yzw.Z;
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}
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""");
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}
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private static void GenerateArrayAccess(VectorDefinition vector, StringBuilder builder)
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{
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StringBuilder getterSwitch = new();
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StringBuilder setterSwitch = new();
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for (int i = 0; i < vector.ComponentCount; i++)
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{
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getterSwitch.Append($$"""
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case {{i}}:
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return {{ComponentNames[i]}};
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""");
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setterSwitch.Append($$"""
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case {{i}}:
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{{ComponentNames[i]}} = value;
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break;
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""");
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}
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builder.Append($$"""
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public {{vector.ElementTypeName}} this[int index]
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{
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get
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{
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switch (index)
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{{{getterSwitch}}
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default:
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throw new IndexOutOfRangeException();
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}
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}
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set
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{
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switch (index)
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{{{setterSwitch}}
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default:
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throw new IndexOutOfRangeException();
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}
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}
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}
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""");
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}
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private void GenerateEqualityOperators(VectorDefinition vector, StringBuilder builder)
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{
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GenerateComparison("==", vector, builder);
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GenerateComparison("!=", vector, builder);
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}
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public static void GenerateComparison(string op, VectorDefinition vector, StringBuilder builder)
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{
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StringBuilder arguments = new();
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for (int i = 0; i < vector.ComponentCount; i++)
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{
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if (i != 0)
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arguments.Append(", ");
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arguments.Append($"left.{ComponentNames[i]} {op} right.{ComponentNames[i]}");
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}
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builder.Append($$"""
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public static bool{{vector.ComponentCount}} operator {{op}}({{vector.VectorName}} left, {{vector.VectorName}} right)
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{
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return new bool{{vector.ComponentCount}}({{arguments}});
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}
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""");
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}
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private void GenerateComparisonOperators(VectorDefinition vector, StringBuilder builder)
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{
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GenerateComparison(">", vector, builder);
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GenerateComparison(">=", vector, builder);
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GenerateComparison("<", vector, builder);
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GenerateComparison("<=", vector, builder);
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}
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public static void GenerateMathOperators(VectorDefinition vector, StringBuilder builder)
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{
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GenerateUnaryOperatorOverload("+", vector, builder);
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GenerateUnaryOperatorOverload("-", vector, builder);
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GenerateOperatorOverloads("+", vector, builder);
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GenerateOperatorOverloads("-", vector, builder);
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GenerateOperatorOverloads("*", vector, builder);
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GenerateOperatorOverloads("/", vector, builder);
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GenerateOperatorOverloads("%", vector, builder);
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}
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public static void GenerateUnaryOperatorOverload(string op, VectorDefinition vector, StringBuilder builder)
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{
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StringBuilder negativeArguments = new();
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for (int i = 0; i < vector.ComponentCount; i++)
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{
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if (i != 0)
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negativeArguments.Append(", ");
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negativeArguments.Append($"{op}value.{ComponentNames[i]}");
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}
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builder.Append($$"""
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public static {{vector.VectorName}} operator {{op}}({{vector.VectorName}} value)
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{
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return new {{vector.VectorName}}({{negativeArguments}});
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}
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""");
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}
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public static void GenerateOperatorOverloads(string op, VectorDefinition vector, StringBuilder builder)
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{
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StringBuilder arguments = new();
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// Vector <op> Vector
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for (int i = 0; i < vector.ComponentCount; i++)
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{
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if (i != 0)
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arguments.Append(", ");
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arguments.Append($"left.{ComponentNames[i]} {op} right.{ComponentNames[i]}");
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}
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builder.Append($$"""
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public static {{vector.VectorName}} operator {{op}}({{vector.VectorName}} left, {{vector.VectorName}} right)
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{
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return new {{vector.VectorName}}({{arguments}});
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}
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""");
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// Vector <op> Scalar
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arguments.Clear();
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for (int i = 0; i < vector.ComponentCount; i++)
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{
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if (i != 0)
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arguments.Append(", ");
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arguments.Append($"left.{ComponentNames[i]} {op} right");
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}
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builder.Append($$"""
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public static {{vector.VectorName}} operator {{op}}({{vector.VectorName}} left, {{vector.ElementTypeName}} right)
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{
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return new {{vector.VectorName}}({{arguments}});
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}
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""");
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// Scalar <op> Vector
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arguments.Clear();
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for (int i = 0; i < vector.ComponentCount; i++)
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{
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if (i != 0)
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arguments.Append(", ");
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arguments.Append($"left {op} right.{ComponentNames[i]}");
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}
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builder.Append($$"""
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public static {{vector.VectorName}} operator {{op}}({{vector.ElementTypeName}} left, {{vector.VectorName}} right)
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{
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return new {{vector.VectorName}}({{arguments}});
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}
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""");
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}
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public static void GenerateLogicOperators(VectorDefinition vector, StringBuilder builder)
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{
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GenerateOperatorOverloads("&", vector, builder);
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GenerateOperatorOverloads("|", vector, builder);
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GenerateOperatorOverloads("^", vector, builder);
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}
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/**
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* Returns true if the swizzle operator is invalid (same component assigned twice).
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*/
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static bool IsSwizzleSetterValid(int[] cmp, int vecSize)
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{
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return cmp[0] == cmp[1] || (vecSize >= 3 && cmp[0] == cmp[2]) || (vecSize == 4 && cmp[0] == cmp[3]) ||
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(vecSize >= 3 && cmp[1] == cmp[2]) || (vecSize == 4 && cmp[1] == cmp[3]) ||
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(vecSize == 4 && cmp[2] == cmp[3]);
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}
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private void GenerateSwizzle(VectorDefinition vector, StringBuilder builder)
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{
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for(int swizzleCount = 2; swizzleCount <= 4; swizzleCount++)
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{
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int[] cmp = new int[4];
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int cmp2max = swizzleCount > 2 ? vector.ComponentCount : 1;
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int cmp3max = swizzleCount > 3 ? vector.ComponentCount : 1;
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for(cmp[0] = 0; cmp[0] < vector.ComponentCount; cmp[0]++)
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for(cmp[1] = 0; cmp[1] < vector.ComponentCount; cmp[1]++)
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for(cmp[2] = 0; cmp[2] < cmp2max; cmp[2]++)
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for(cmp[3] = 0; cmp[3] < cmp3max; cmp[3]++)
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{
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StringBuilder swizzleName = new StringBuilder(4);
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StringBuilder swizzleConstructor = new StringBuilder(swizzleCount * 3);
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StringBuilder setter = new StringBuilder();
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bool setterInvalid = IsSwizzleSetterValid(cmp, swizzleCount);
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for(int c = 0; c < swizzleCount; c++)
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{
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swizzleName.Append(ComponentNames[cmp[c]]);
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if(c != 0)
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{
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swizzleConstructor.Append(", ");
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}
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swizzleConstructor.Append(ComponentNames[cmp[c]]);
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if(!setterInvalid && c < vector.ComponentCount)
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{
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setter.Append($"\n\t\t\t{ComponentNames[cmp[c]]} = value.{ComponentNames[c]};");
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}
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}
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// if (!setterInvalid)
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// {
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// setter.Append(
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// """
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// set mut
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// {
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//""");
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// }
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builder.Append($$"""
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public {{vector.BaseName}}{{swizzleCount}} {{swizzleName}}
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{
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get => new({{swizzleConstructor}});
|
|
|
|
""");
|
|
|
|
if (!setterInvalid)
|
|
{
|
|
builder.Append($$"""
|
|
set
|
|
{{{setter}}
|
|
}
|
|
|
|
""");
|
|
}
|
|
|
|
builder.Append("\t}\n\n");
|
|
|
|
// string swizzleString = $$"""
|
|
//public {{swizzle.BaseName}}{{swizzleCount}} {{swizzleName}}
|
|
//{
|
|
//get => {{swizzleConstructor}};
|
|
//{{setter}}
|
|
//}
|
|
|
|
//""";
|
|
|
|
//builder.Append(swizzleString);
|
|
}
|
|
}
|
|
}
|
|
|
|
public void Initialize(GeneratorInitializationContext context)
|
|
{
|
|
context.RegisterForSyntaxNotifications(() => new VectorSyntaxReceiver());
|
|
}
|
|
}
|
|
|
|
public class VectorSyntaxReceiver : ISyntaxReceiver
|
|
{
|
|
public ComparableVectorSyntaxReceiver ComparableReceiver = new();
|
|
public VectorMathSyntaxReceiver MathReceiver = new();
|
|
public VectorLogicSyntaxReceiver LogicReceiver = new();
|
|
public VectorCastSyntaxReceiver CastReceiver = new();
|
|
|
|
public List<VectorDefinition> Vectors { get; } = new();
|
|
|
|
public void OnVisitSyntaxNode(SyntaxNode syntaxNode)
|
|
{
|
|
ComparableReceiver.OnVisitSyntaxNode(syntaxNode);
|
|
MathReceiver.OnVisitSyntaxNode(syntaxNode);
|
|
LogicReceiver.OnVisitSyntaxNode(syntaxNode);
|
|
CastReceiver.OnVisitSyntaxNode(syntaxNode);
|
|
|
|
if (syntaxNode is not AttributeSyntax { Name: IdentifierNameSyntax { Identifier.Text: "Vector" } } attr)
|
|
return;
|
|
|
|
var @struct = attr.GetParent<StructDeclarationSyntax>();
|
|
var name = @struct.Identifier.Text;
|
|
|
|
var elementTypeName = (attr.ArgumentList.Arguments[0].Expression as TypeOfExpressionSyntax).Type.ToFullString();
|
|
|
|
var componentCount = (attr.ArgumentList.Arguments[1].Expression as LiteralExpressionSyntax).Token.Value as int?;
|
|
|
|
if (componentCount == null)
|
|
return;
|
|
|
|
var baseName = (attr.ArgumentList.Arguments[2].Expression as LiteralExpressionSyntax).Token.ValueText;
|
|
|
|
Vectors.Add(new VectorDefinition(name, @struct, componentCount.Value, baseName, elementTypeName));
|
|
}
|
|
|
|
public class VectorDefinition
|
|
{
|
|
public string VectorName { get; }
|
|
public StructDeclarationSyntax Struct { get; }
|
|
|
|
public int ComponentCount { get; }
|
|
|
|
public string BaseName { get; }
|
|
|
|
public string ElementTypeName { get; }
|
|
|
|
public VectorDefinition(string vectorName, StructDeclarationSyntax @struct, int componentCount, string baseName, string elementTypeName)
|
|
{
|
|
VectorName = vectorName;
|
|
Struct = @struct;
|
|
ComponentCount = componentCount;
|
|
BaseName = baseName;
|
|
ElementTypeName = elementTypeName;
|
|
}
|
|
}
|
|
}
|
|
|
|
public class ComparableVectorSyntaxReceiver : ISyntaxReceiver
|
|
{
|
|
public List<string> ComparableVectors { get; } = new();
|
|
|
|
public void OnVisitSyntaxNode(SyntaxNode syntaxNode)
|
|
{
|
|
if (syntaxNode is not AttributeSyntax { Name: IdentifierNameSyntax { Identifier.Text: "ComparableVector" } } attr)
|
|
return;
|
|
|
|
var @struct = attr.GetParent<StructDeclarationSyntax>();
|
|
var name = @struct.Identifier.Text;
|
|
|
|
ComparableVectors.Add(name);
|
|
}
|
|
}
|
|
|
|
public class VectorMathSyntaxReceiver : ISyntaxReceiver
|
|
{
|
|
public List<string> MathVectors { get; } = new();
|
|
|
|
public void OnVisitSyntaxNode(SyntaxNode syntaxNode)
|
|
{
|
|
if (syntaxNode is not AttributeSyntax { Name: IdentifierNameSyntax { Identifier.Text: "VectorMath" } } attr)
|
|
return;
|
|
|
|
var @struct = attr.GetParent<StructDeclarationSyntax>();
|
|
var name = @struct.Identifier.Text;
|
|
|
|
MathVectors.Add(name);
|
|
}
|
|
}
|
|
|
|
public class VectorLogicSyntaxReceiver : ISyntaxReceiver
|
|
{
|
|
public List<string> LogicVectors { get; } = new();
|
|
|
|
public void OnVisitSyntaxNode(SyntaxNode syntaxNode)
|
|
{
|
|
if (syntaxNode is not AttributeSyntax { Name: IdentifierNameSyntax { Identifier.Text: "VectorLogic" } } attr)
|
|
return;
|
|
|
|
var @struct = attr.GetParent<StructDeclarationSyntax>();
|
|
var name = @struct.Identifier.Text;
|
|
|
|
LogicVectors.Add(name);
|
|
}
|
|
}
|
|
|
|
public class VectorCastSyntaxReceiver : ISyntaxReceiver
|
|
{
|
|
public List<VectorCast> VectorCasts { get; } = new();
|
|
|
|
public void OnVisitSyntaxNode(SyntaxNode syntaxNode)
|
|
{
|
|
if (syntaxNode is not AttributeSyntax { Name: IdentifierNameSyntax { Identifier.Text: "VectorCast" } } attr)
|
|
return;
|
|
|
|
var @struct = attr.GetParent<StructDeclarationSyntax>();
|
|
var fromType = @struct.Identifier.Text;
|
|
|
|
var toType = (attr.ArgumentList.Arguments[0].Expression as TypeOfExpressionSyntax).Type.ToFullString();
|
|
|
|
var isExplicit = (attr.ArgumentList.Arguments[1].Expression as LiteralExpressionSyntax).Token.Value as bool?;
|
|
|
|
if (isExplicit == null)
|
|
return;
|
|
|
|
VectorCasts.Add(new VectorCast(fromType, toType, isExplicit.Value));
|
|
}
|
|
|
|
public record VectorCast (string FromType, string ToType, bool IsExplicit)
|
|
{
|
|
public string FromType { get; } = FromType;
|
|
public string ToType { get; } = ToType;
|
|
public bool IsExplicit { get; } = IsExplicit;
|
|
}
|
|
}
|