private int EnsureLabelIndex(BranchLabel label) {
if (label.HasRuntimeLabel) {
return label.LabelIndex;
}
label.LabelIndex = _runtimeLabelCount;
_runtimeLabelCount++;
return label.LabelIndex;
}
public void MarkLabel(BranchLabel label) {
label.Mark(this);
}
public void EmitGoto(BranchLabel label, bool hasResult, bool hasValue)
{
Emit(GotoInstruction.Create(EnsureLabelIndex(label), hasResult, hasValue));
}
public BranchLabel MakeLabel() {
if (_labels == null) {
_labels = new List<BranchLabel>();
}
var label = new BranchLabel();
_labels.Add(label);
return label;
}
public void EmitCoalescingBranch(BranchLabel leftNotNull) {
EmitBranch(new CoalescingBranchInstruction(), leftNotNull);
}
public void EmitEnterTryFinally(BranchLabel finallyStartLabel) {
Emit(EnterTryFinallyInstruction.Create(EnsureLabelIndex(finallyStartLabel)));
}
public void EmitEnterTryFinally(BranchLabel finallyStartLabel)
{
Emit(EnterTryFinallyInstruction.Create(EnsureLabelIndex(finallyStartLabel)));
}
public void EmitBranch(BranchLabel label) {
EmitBranch(new BranchInstruction(), label);
}
public void EmitCoalescingBranch(BranchLabel leftNotNull)
{
EmitBranch(new CoalescingBranchInstruction(), leftNotNull);
}
public void EmitBranchFalse(BranchLabel elseLabel)
{
EmitBranch(new BranchFalseInstruction(), elseLabel);
}
public void EmitBranch(BranchLabel label, bool hasResult, bool hasValue)
{
EmitBranch(new BranchInstruction(hasResult, hasValue), label);
}
public void EmitBranch(BranchLabel label)
{
EmitBranch(new BranchInstruction(), label);
}
private void EmitBranch(OffsetInstruction instruction, BranchLabel label)
{
Emit(instruction);
label.AddBranch(this, Count - 1);
}
public void EmitGoto(BranchLabel label, bool hasResult, bool hasValue) {
Emit(GotoInstruction.Create(EnsureLabelIndex(label), hasResult, hasValue));
}
public void EmitLeaveExceptionHandler(bool hasValue, BranchLabel tryExpressionEndLabel)
{
Emit(LeaveExceptionHandlerInstruction.Create(EnsureLabelIndex(tryExpressionEndLabel), hasValue));
}
private void EmitBranch(OffsetInstruction instruction, BranchLabel label) {
Emit(instruction);
label.AddBranch(this, Count - 1);
}
public void EmitGoto(BranchLabel label, bool hasResult, bool hasValue) {
Emit(new GotoInstruction(Count, hasResult, hasValue));
label.AddBranch(Count - 1);
}
public void EmitBranch(BranchLabel label, bool hasResult, bool hasValue) {
EmitBranch(new BranchInstruction(hasResult, hasValue), label);
}
public void EmitLeaveExceptionHandler(bool hasValue, BranchLabel startOfFinally) {
EmitBranch(new LeaveExceptionHandlerInstruction(hasValue), startOfFinally);
}
public void EmitBranchFalse(BranchLabel elseLabel) {
EmitBranch(new BranchFalseInstruction(), elseLabel);
}
public void EmitBranchNull(BranchLabel elseLabel) {
EmitBranch(new BranchNullInstruction(), elseLabel);
}
public void EmitLeaveExceptionHandler(bool hasValue, BranchLabel tryExpressionEndLabel) {
Emit(LeaveExceptionHandlerInstruction.Create(EnsureLabelIndex(tryExpressionEndLabel), hasValue));
}
public void MarkLabel(BranchLabel label)
{
label.Mark(this);
}