/// <summary>
/// Emits an instruction.
/// </summary>
/// <param name="instruction">The instruction.</param>
/// <param name="context">The context.</param>
/// <param name="builder">The builder.</param>
public void Emit(Instruction instruction, MethodContext context, BuilderRef builder)
{
ICodeEmitter emitter = null;
if (mEmitters.TryGetValue(instruction.OpCode.Code, out emitter))
{
emitter.Emit(instruction, context, builder);
}
else
{
throw new NotImplementedException("Instruction with opcode " + instruction.OpCode.Code + " is not implemented");
}
}
public void Emit(CompilationContext context)
{
context.EmitComment(";For");
context.NewScope();
context.StartPossiblyNonExecutedBlock();
int testLabel = context.CreateNewLabel();
int doneLabel = context.CreateNewLabel();
Initializer.Emit(context);
context.EmitLabel(testLabel);
Condition.Emit(context);
context.EmitInstruction(new IRPop()
{
To = "eax"
});
context.EmitInstruction(new IRCompareImmediate()
{
Left = "eax", Right = new ImmediateValue(0)
});
context.EmitInstruction(new IRJumpEQ()
{
Address = new LabelAddressValue(doneLabel)
});
foreach (var token in Body)
{
if (token is ICodeEmitter)
{
((ICodeEmitter)token).Emit(context);
}
}
Update.Emit(context);
context.EmitInstruction(new IRJumpImmediate()
{
Address = new LabelAddressValue(testLabel)
});
context.EmitLabel(doneLabel);
context.EndPossiblyNonExecutedBlock();
context.EndScope(false);
}