m3tk/src/syn/M3CComment.m3

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!**********************************************************************


MODULE M3CComment;

IMPORT Text;
IMPORT M3AST_AS;
IMPORT M3CSrcPos;
IMPORT M3CComment;

*IMPORT M3AST_AS_F;*


REVEAL
  M3CComment.T = BRANDED OBJECT
    prev, next:  M3CComment.Iter := NIL;
    pos: M3CSrcPos.T;
    body: TEXT;
    precedingNode, followingNode: M3AST_AS.SRC_NODE := NIL;
  END;

  M3CComment.Iter = M3CComment.T BRANDED OBJECT END;

  M3CComment.Store = BRANDED REF RECORD
    first, last: M3CComment.Iter := NIL;
  END;

PROCEDURE NewStore(): Store RAISES {}=
  BEGIN
    RETURN NEW(Store);
  END NewStore;

PROCEDURE AddToStore(
    body: Text.T;
    pos: M3CSrcPos.T;
    precedingNode: M3AST_AS.SRC_NODE;
    VAR store: Store)
    : T
    RAISES {}=
  VAR
    new := NEW(Iter, pos := pos, body := body,
        precedingNode := precedingNode);
  BEGIN
    WITH last = store.last DO
      IF last = NIL THEN
        store.first := new;
      ELSE
        last.next := new;
        new.prev := last;
      END;
      last := new;
    END;
    RETURN new;
  END AddToStore;

PROCEDURE AddFollowingNode(
    followingNode: M3AST_AS.SRC_NODE;
    store: Store)
    RAISES {}=
  VAR
    t := store.last;
    precedingNode := t.precedingNode;
  BEGIN
    REPEAT
      t.followingNode := followingNode;
      t := t.prev;
    UNTIL t = NIL OR t.precedingNode # precedingNode;
  END AddFollowingNode;

PROCEDURE NewIter(ps: Store): Iter RAISES {}=
  BEGIN
    IF ps = NIL THEN RETURN NIL ELSE RETURN ps.first END;
  END NewIter;

PROCEDURE Next(VAR iter: Iter; VAR t: T): BOOLEAN RAISES {}=
  BEGIN
    IF iter = NIL THEN RETURN FALSE END;
    t := iter;
    iter := iter.next;
    RETURN TRUE;
  END Next;

PROCEDURE Position(t: T): M3CSrcPos.T RAISES {}=
  BEGIN
    RETURN t.pos;
  END Position;

PROCEDURE Body(t: T): Text.T RAISES {}=
  BEGIN
    RETURN t.body;
  END Body;

PROCEDURE PrecedingNode(t: T): M3AST_AS.SRC_NODE RAISES {}=
  BEGIN
    RETURN t.precedingNode;
  END PrecedingNode;

PROCEDURE FollowingNode(t: T): M3AST_AS.SRC_NODE RAISES {}=
  BEGIN
    RETURN t.followingNode;
  END FollowingNode;

BEGIN

END M3CComment.