MODULE SOxIntfCBProxyCode;

IMPORT SOxCoder, Atom, Formatter, SOxCodeUtils, SOxCodeFiles, Type,
       Wr, ImportList, CodeForType, AtomList;

REVEAL T = SOxCoder.T BRANDED OBJECT
OVERRIDES
  InitImports := initImports;
  Import := import;
  Head := head;
  Decls := decls;
  Main := main;
  Bottom := bottom;
END;

<* FATAL Wr.Failure*>

         WITH Put    = Formatter.PutText,
                 Nl     = Formatter.NewLine,
                 Tab    = Formatter.Begin,
                 EndTab = Formatter.End      DO

PROCEDURE PutLine (fmtWr: Formatter.T; text: TEXT) =
  BEGIN
    Formatter.PutText(fmtWr, text);
    Formatter.NewLine(fmtWr, freshLine := FALSE);
  END PutLine;

VAR
  extraImports := ARRAY [1..1] OF Atom.T{Atom.FromText("EmbProxiedObj")};

PROCEDURE initImports(<*UNUSED*>self: T;
                      basename: TEXT;
                      imports: ImportList.T) =
  VAR imp := ARRAY [1..1] OF Atom.T{
    Atom.FromText(SOxCodeUtils.FileName(basename, SOxCodeFiles.T.CB_I3))};
  BEGIN
    CodeForType.AugmentImportList(imports, extraImports);
    CodeForType.AugmentImportList(imports, imp);
  END initImports;

PROCEDURE import(<*UNUSED*>self: T;
                type: Type.Object;
                methods: ImportList.MethodList;
                umethods: AtomList.T;
                imports: ImportList.T) =
  BEGIN
    CodeForType.ImportLst(type, imports, methods, umethods);
    CodeForType.ImportCBLst(type, imports, methods, umethods);
  END import;

PROCEDURE head(self: T;
               wr: Formatter.T;
               filename: TEXT;
               basename: TEXT;
               imports: ImportList.T) =
  BEGIN
    SOxCodeUtils.HeaderComment(wr, filename);
    self.basename := basename;
    self.fbasename := SOxCodeUtils.FileName(basename, SOxCodeFiles.T.CBPRX_I3);

    PutLine(wr, "INTERFACE " & self.fbasename & ";\n");
    CodeForType.ProduceImports(wr, imports);
  END head;

PROCEDURE decls(self: T;
                wr: Formatter.T;
                typeID: Type.Qid;
                <*UNUSED*>stypeID: Type.Qid;
                <*UNUSED*>implName: TEXT;
                <*UNUSED*>methods: ImportList.MethodList;
                <*UNUSED*>umethods: AtomList.T) =
  VAR typTxt : TEXT;
      identfTxt : TEXT;
  BEGIN
    WITH Nl     = Formatter.NewLine,
         Tab    = Formatter.Begin,
         EndTab = Formatter.End     DO
      typTxt := CodeForType.QidToText(typeID);
      identfTxt := CodeForType.QidToIdentf(typeID);

      Nl(wr, freshLine := FALSE);
      Tab(wr, 2);
      PutLine(wr, "VAR");

PutLine(wr, MkProxy & identfTxt & : PROCEDURE(x: & typTxt & ) := NIL;);

      PutLine(wr, "MkProxy" & identfTxt & "CB : PROCEDURE(x: " &
        SOxCodeUtils.FileName(self.basename, SOxCodeFiles.T.CB_I3) & "." &
        identfTxt & ") := NIL;");

      EndTab(wr);
    END
 END decls;

PROCEDURE main(<*UNUSED*>self: T;
               wr: Formatter.T;
               typeID: Type.Qid;
               <*UNUSED*>type: Type.Object;
               <*UNUSED*>stypeID: Type.Qid;
               <*UNUSED*>implName: TEXT;
               methods: ImportList.MethodList;
               umethods: AtomList.T) =
  VAR typTxt : TEXT;
      identfTxt : TEXT;
      meth : Atom.T;
  BEGIN
    WITH Put    = Formatter.PutText,
         Nl     = Formatter.NewLine,
         Tab    = Formatter.Begin,
         EndTab = Formatter.End     DO
      typTxt := CodeForType.QidToText(typeID);
      identfTxt := CodeForType.QidToIdentf(typeID);

      Nl(wr, freshLine := FALSE);
      Tab(wr, 2);
      PutLine(wr, "TYPE");
      Tab(wr, 2);
      PutLine(wr, "CBProxy" & identfTxt &
        " = EmbProxiedObj.Proxy OBJECT METHODS");

      Put(wr,"pre_anyChange (");
      Tab(wr, 0);
      Put(wr,"READONLY obj: " & typTxt & ");");
      EndTab(wr);
      Nl(wr, freshLine := FALSE);

      Put(wr,"post_anyChange (");
      Tab(wr, 0);
      Put(wr,"READONLY obj: " & typTxt & ");");
      EndTab(wr);

      FOR i := 0 TO LAST(methods^) DO
        meth := methods[i].name;
        IF AtomList.Member(umethods, meth) THEN
          Nl(wr, freshLine := FALSE);

          Put(wr, "pre_" & Atom.ToText(meth) & " (");
          Tab(wr, 0);
          Put(wr, "READONLY obj: " & typTxt);
          CodeForType.PrintSig(wr, methods[i].sig);
          Put(wr, "): BOOLEAN;");
          EndTab(wr);
          Nl(wr, freshLine := FALSE);

          Put(wr, "post_" & Atom.ToText(meth) & " (");
          Tab(wr, 0);
          Put(wr, "READONLY obj: " & typTxt);
          CodeForType.PrintSig(wr, methods[i].sig);
          Put(wr, "): BOOLEAN;");
          EndTab(wr);
        END;
      END;
      EndTab(wr);
      Nl(wr, freshLine := FALSE);
      PutLine(wr, "END;");
      EndTab(wr);
    END;
  END main;

PROCEDURE bottom(self: T;
                 wr: Formatter.T;
                 <*UNUSED*>fname: TEXT) =
  BEGIN
    WITH  Nl     = Formatter.NewLine DO
      Nl(wr, freshLine := FALSE);
      PutLine(wr, "END " & self.fbasename & ".");
    END;
  END bottom;

BEGIN
END SOxIntfCBProxyCode.