public static void RedirectConstructorToMethod(CecilContext stardewContext, Type asmType, string type, string method, string methodType, string methodName, Type[] parameters)
{
// Get a single string containing the full names of all parameters, comma separated
string parametersString = "";
for (int i = 0; i < parameters.Length; i++)
{
parametersString += parameters[i].FullName;
if (i != parameters.Length - 1)
{
parametersString += ",";
}
}
if (asmType == null)
{
return;
}
var oldConstructor = asmType.GetConstructor(parameters);
if (oldConstructor == null)
{
return;
}
// Build a FullName version of oldConstructor.Name
string oldConstructorFullName = "System.Void " + asmType.FullName + "::.ctor" + "(" + parametersString + ")";
var oldConstructorReference = stardewContext.GetMethodDefinitionFullName(asmType.FullName ?? asmType.Namespace + "." + asmType.Name, oldConstructorFullName);
// Build a FullName version of the new method
string methodFullName = $"{asmType} {methodType}::{methodName}({parametersString})";
var newMethod = stardewContext.GetMethodDefinitionFullName(methodType, methodFullName);
if (newMethod == null)
{
return;
}
ILProcessor ilProcessor = stardewContext.GetMethodIlProcessor(type, method);
var instructions = ilProcessor.Body.Instructions.Where(n => n.OpCode == OpCodes.Newobj && n.Operand == oldConstructorReference).ToList();
foreach (var instruction in instructions)
{
ilProcessor.Body.SimplifyMacros();
ilProcessor.Replace(instruction, ilProcessor.Call(newMethod));
ilProcessor.Body.OptimizeMacros();
}
}
public static void GetEnumerator(this ILProcessor processor, GenericInstanceType @this) => processor.Call(@this.FindMethod(nameof(GetEnumerator), NoParameter));