private void CGWhileStat(FuncInfo funcInfo, WhileStatNode node)
{
int beforePc = funcInfo.PC();
int r = funcInfo.AllocReg();
CGExp(funcInfo, node.Exp, r, 1);
funcInfo.FreeReg();
funcInfo.EmitTest(r, 0);
int jumPC = funcInfo.EmitJMP(0, 0);
funcInfo.EnterScope(true);
CGBlock(funcInfo, node.DoStatNode.Block);
funcInfo.EmitJMP(0, beforePc - funcInfo.PC());
funcInfo.ExitScope();
funcInfo.FixSBX(jumPC, funcInfo.PC() - jumPC);
}
public virtual TResult Visit(WhileStatNode node) => this.VisitChildren(node);