private void TryMatch(MatchContext context)
{
var instruction = context.Instruction;
Match(context);
if (!context.Success)
context.Reset(instruction);
}
internal override void Match(MatchContext context)
{
Pattern.Match(context);
if (!context.IsMatch)
return;
var match = GetLastMatchingInstruction(context);
var field = (FieldInfo)match.Operand;
context.AddData(BackingFieldKey, field);
}
internal override void Match(MatchContext context)
{
if (context.Instruction == null)
{
context.Success = false;
}
else
{
context.Success = context.Instruction.OpCode == _opcode;
context.Advance();
}
}
internal static MatchContext Match(MethodBase method, ILPattern pattern)
{
if (method == null)
throw new ArgumentNullException("method");
if (pattern == null)
throw new ArgumentNullException("pattern");
var instructions = (IList<Instruction>) MethodBodyReader.GetInstructions(method).AsReadOnly();
if (instructions.Count == 0)
throw new ArgumentException();
var context = new MatchContext(instructions[0]);
pattern.Match(context);
return context;
}
internal abstract void Match(MatchContext context);
internal override void Match(MatchContext context)
{
foreach (var pattern in _patterns)
{
pattern.Match(context);
if (!context.Success)
return;
}
}
internal override void Match(MatchContext context)
{
_pattern.TryMatch(context);
}
protected static Instruction GetLastMatchingInstruction(MatchContext context)
{
return context.Instruction == null ? null : context.Instruction.Previous;
}
private static FieldInfo GetFieldFromContext(MatchContext context)
{
object data;
if (!context.TryGetData(BackingFieldPattern.BackingFieldKey, out data))
throw new NotSupportedException();
return (FieldInfo)data;
}
internal abstract void Match(MatchContext context);
internal override void Match(MatchContext context)
{
_pattern.TryMatch(context);
}
protected static Instruction GetLastMatchingInstruction(MatchContext context)
{
return(context.Instruction == null ? null : context.Instruction.Previous);
}