public override void Match(MatchContext context)
{
pattern.TryMatch (context);
}
public override void Match(MatchContext context)
{
foreach (var pattern in patterns) {
pattern.Match (context);
if (!context.success)
break;
}
}
public override void Match(MatchContext context)
{
if (!a.TryMatch (context))
b.Match (context);
}
public override void Match(MatchContext context)
{
if (context.instruction == null) {
context.success = false;
return;
}
context.success = context.instruction.OpCode == opcode;
context.Advance ();
}
protected static Instruction GetLastMatchingInstruction(MatchContext context)
{
if (context.instruction == null)
return null;
return context.instruction.Previous;
}
public bool TryMatch(MatchContext context)
{
var instruction = context.instruction;
Match (context);
if (context.success)
return true;
context.Reset (instruction);
return false;
}
public abstract void Match(MatchContext context);
public static MatchContext Match(MethodBase method, ILPattern pattern)
{
if (method == null)
throw new ArgumentNullException ("method");
if (pattern == null)
throw new ArgumentNullException ("pattern");
var instructions = method.GetInstructions ();
if (instructions.Count == 0)
throw new ArgumentException ();
var context = new MatchContext (instructions [0]);
pattern.Match (context);
return context;
}
public override void Match(MatchContext context)
{
pattern.Match (context);
if (!context.success)
return;
var match = GetLastMatchingInstruction (context);
var field = (FieldInfo) match.Operand;
context.AddData (FieldKey, field);
}