public static IReadOnlyList <String> GrabLabels(Stmt stmt)
{
GotoLabelsGrabber grabber = new GotoLabelsGrabber();
stmt.Accept(grabber);
return(grabber.Labels);
}
public void CGenDecln(Env env, CGenState state)
{
// .text
// [.globl <func>]
// <func>:
// pushl %ebp
// movl %esp, %ebp
//
state.TEXT();
Env.Entry entry = env.Find(this.name).Value;
state.COMMENT(ToString());
switch (entry.Kind)
{
case Env.EntryKind.GLOBAL:
switch (this.scs)
{
case StorageClass.AUTO:
case StorageClass.EXTERN:
state.GLOBL(this.name);
break;
case StorageClass.STATIC:
// static definition
break;
default:
throw new InvalidOperationException();
}
break;
default:
throw new InvalidOperationException();
}
state.CGenFuncStart(this.name);
state.InFunction(GotoLabelsGrabber.GrabLabels(this.stmt));
this.stmt.CGenStmt(env, state);
state.CGenLabel(state.ReturnLabel);
state.OutFunction();
// leave
// ret
state.LEAVE();
state.RET();
state.NEWLINE();
}
public static IReadOnlyList<String> GrabLabels(Stmt stmt) {
GotoLabelsGrabber grabber = new GotoLabelsGrabber();
stmt.Accept(grabber);
return grabber.Labels;
}