Chomp
74 lines
2.4 KiB
C#
74 lines
2.4 KiB
C#
using System.Reflection.Emit;
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using HarmonyLib;
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namespace SPTarkov.Reflection.CodeWrapper;
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/// <summary>
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/// Helper class to generate IL code for transpilers
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/// </summary>
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public class CodeGenerator
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{
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public static List<CodeInstruction> GenerateInstructions(List<Code> codes)
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{
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var list = new List<CodeInstruction>();
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foreach (Code code in codes)
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{
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list.Add(ParseCode(code));
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}
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return list;
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}
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private static CodeInstruction ParseCode(Code code)
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{
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if (!code.HasOperand)
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{
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return new CodeInstruction(code.OpCode) { labels = GetLabelList(code) };
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}
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if (code.OpCode == OpCodes.Ldfld || code.OpCode == OpCodes.Ldflda || code.OpCode == OpCodes.Stfld)
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{
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return new CodeInstruction(code.OpCode, AccessTools.Field(code.CallerType, code.OperandTarget as string)) { labels = GetLabelList(code) };
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}
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if (code.OpCode == OpCodes.Call || code.OpCode == OpCodes.Callvirt)
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{
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return new CodeInstruction(code.OpCode, AccessTools.Method(code.CallerType, code.OperandTarget as string, code.Parameters)) { labels = GetLabelList(code) };
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}
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if (code.OpCode == OpCodes.Box)
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{
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return new CodeInstruction(code.OpCode, code.CallerType) { labels = GetLabelList(code) };
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}
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if (code.OpCode == OpCodes.Br || code.OpCode == OpCodes.Brfalse || code.OpCode == OpCodes.Brtrue || code.OpCode == OpCodes.Brtrue_S
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|| code.OpCode == OpCodes.Brfalse_S || code.OpCode == OpCodes.Br_S)
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{
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return new CodeInstruction(code.OpCode, code.OperandTarget) { labels = GetLabelList(code) };
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}
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if (code.OpCode == OpCodes.Ldftn)
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{
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return new CodeInstruction(code.OpCode, AccessTools.Method(code.CallerType, code.OperandTarget as string, code.Parameters)) { labels = GetLabelList(code) };
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}
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if (code.OpCode == OpCodes.Newobj)
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{
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return new CodeInstruction(code.OpCode, code.CallerType.GetConstructors().FirstOrDefault(x => x.GetParameters().Length == code.Parameters.Length)) { labels = GetLabelList(code) };
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}
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throw new ArgumentException($"Code with OpCode {code.OpCode.ToString()} is not supported.");
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}
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private static List<Label> GetLabelList(Code code)
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{
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if (code.GetLabel() == null)
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{
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return [];
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}
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return [ (Label)code.GetLabel() ];
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}
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}
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