public static void SolveDoubleJumps(SchemeFunction function)
{
bool changed = true;
var commands = function.Commands;
while (changed)
{
changed = false;
for (int i = 0; i < commands.Count; ++i)
{
ISchemeCommand cmd = commands[i];
if (cmd is CommandJumpBase)
{
CommandJumpBase jumpCmd = (cmd as CommandJumpBase);
int line = jumpCmd.Line;
if (line < commands.Count && commands[line] is CommandJump)
{
CommandJump jumpCmd2 = commands[line] as CommandJump;
if (jumpCmd.Line != jumpCmd2.Line)
{
jumpCmd.SetLine(jumpCmd2.Line);
changed = true;
}
}
}
}
}
}
public override object VisitElse([NotNull] scheme_langParser.ElseContext context)
{
CommandJump jump = new CommandJump(-1);
currentFunc.AddCommand(jump);
//we must set jump position of latest if (jump-if-false command)
SetLatestJumpPosition(currentFunc.GetCommandCount());
jump_cmds.Add(jump);
VariableManager.EndBlock(); // end if-block
VariableManager.NewBlock(); // start else-block
return(base.VisitElse(context));
}