public override void ExitInstructionStatement([NotNull] ZealCpuParser.InstructionStatementContext context)
{
if (_currentInstruction.Arguments.Count == 0)
{
_currentInstruction.AddressingMode = CpuAddressingMode.Implied;
}
var assumeAddressingAttribute = _currentInstruction.Opcode.GetAttribute <CpuAssumeAddressingAttribute>();
if (assumeAddressingAttribute != null)
{
_currentInstruction.AddressingMode = assumeAddressingAttribute.Addressing;
}
var labelContext = context.label();
if (labelContext != null)
{
_currentInstruction.AssociatedLabel = labelContext.IDENTIFIER().GetText();
}
var opcodeAttributes = EnumHelper.GetAttributes <OpcodeAttribute>(_currentInstruction.Opcode).Where(x => x.AddressingMode == _currentInstruction.AddressingMode).ToArray();
if (opcodeAttributes == null || (opcodeAttributes != null && opcodeAttributes.Length == 0))
{
string descriptionAddressingMode = EnumHelper.GetAttribute <DescriptionAttribute>(_currentInstruction.AddressingMode).Description;
addErrorMesage(String.Format("opcode '{0}' does not support {1} addressing mode.", _currentInstruction.Opcode, descriptionAddressingMode), context.opcode().Start);
}
_currentScope.Statements.Add(_currentInstruction);
_currentInstruction = null;
}
public override void EnterInstructionStatement([NotNull] ZealCpuParser.InstructionStatementContext context)
{
_currentInstruction = new CpuInstructionStatement();
_currentInstruction.Line = context.Start.Line;
_currentInstruction.Column = context.Start.Column;
CpuInstructions opcode;
if (Enum.TryParse <CpuInstructions>(context.opcode().GetText(), out opcode))
{
_currentInstruction.Opcode = opcode;
}
}