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using Mono.Cecil;
using Mono.Cecil.Cil;
namespace StardewModdingAPI.AssemblyRewriters.Framework
{
/// <summary>Base class for a field finder.</summary>
public abstract class BaseFieldFinder : IInstructionFinder
{
/*********
** Accessors
*********/
/// <summary>A brief noun phrase indicating what the instruction finder matches.</summary>
public abstract string NounPhrase { get; }
/*********
** Public methods
*********/
/// <summary>Get whether a CIL instruction matches.</summary>
/// <param name="instruction">The IL instruction.</param>
/// <param name="platformChanged">Whether the mod was compiled on a different platform.</param>
public bool IsMatch(Instruction instruction, bool platformChanged)
{
if (instruction.OpCode != OpCodes.Ldfld && instruction.OpCode != OpCodes.Ldsfld && instruction.OpCode != OpCodes.Stfld && instruction.OpCode != OpCodes.Stsfld)
return false; // not a field reference
return this.IsMatch(instruction, (FieldReference)instruction.Operand, platformChanged);
}
/*********
** Protected methods
*********/
/// <summary>Get whether a field reference should be rewritten.</summary>
/// <param name="instruction">The IL instruction.</param>
/// <param name="fieldRef">The field reference.</param>
/// <param name="platformChanged">Whether the mod was compiled on a different platform.</param>
protected abstract bool IsMatch(Instruction instruction, FieldReference fieldRef, bool platformChanged);
/// <summary>Whether an instruction is a static field reference.</summary>
/// <param name="instruction">The IL instruction.</param>
protected bool IsStaticField(Instruction instruction)
{
return instruction.OpCode == OpCodes.Ldsfld || instruction.OpCode == OpCodes.Stsfld;
}
}
}
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