Ejemplo n.º 1
0
 protected override Box __AddSubscript(Expr e, Box nuc, Box sub)
 {
     if (nuc is StringBox || nuc is CharBox)
     {
         return(new AtomBox(null, nuc, sub, new NullBox(), GetTType(nuc)));                                   // for 'log' function's base, really
     }
     else
     {
         // XXX Having to edit existing boxes this way here means that the box system is almost certainly misdesigned.
         List <Box> lb = new List <Box>(new Box[] { nuc });
         /* Find parent of last real atomic thing */
         List <Box> pb = lb;
         while (pb[pb.Count - 1] is HBox)
         {
             pb = ((HBox)pb[pb.Count - 1]).Boxes;
         }
         /* the last real thing itself */
         Box     b  = pb[pb.Count - 1];
         AtomBox ab = b as AtomBox;
         if (ab != null)
         {
             Trace.Assert(ab.Sup is NullBox && ab.Sub is NullBox); // shouldn't happen given 1st if of our caller
             ab.Sub = sub;
         }
         else
         {
             Box bb = new AtomBox(null, b, sub, new NullBox(), GetTType(b));
             pb[pb.Count - 1] = bb;
         }
         return(new HBox(e, lb));
     }
 }
Ejemplo n.º 2
0
        protected override Box __AddSuperscript(Expr e, Box nuc, Box sup)
        {
            // XXX Having to edit existing boxes this way here means that the box system is almost certainly misdesigned.
            List <Box> lb = new List <Box>(new Box[] { nuc });
            /* Find parent of last real atomic thing (which can have a superscript) */
            List <Box> pb = lb;

            while (pb[pb.Count - 1] is HBox)
            {
                pb = ((HBox)pb[pb.Count - 1]).Boxes;
            }
            /* the last real thing itself */
            Box     b  = pb[pb.Count - 1];
            AtomBox ab = b as AtomBox;

            if (ab != null)
            {
                Trace.Assert(ab.Sup is NullBox); // shouldn't happen given 1st if of our caller
                ab.Sup = sup;
            }
            else
            {
                Box bb = new AtomBox(null, b, new NullBox(), sup, GetTType(b));
                pb[pb.Count - 1] = bb;
            }
            return(new HBox(e, lb));
        }
Ejemplo n.º 3
0
 public static object[] tour(object graph, List<string> ns, Dictionary<string, string> aliases)
 {
     Guide guide = new Guide();
     AtomBox outbox = new AtomBox();
     ListBox collection = new ListBox();
     Dictionary<object, object> symtab = new Dictionary<object, object>();
     add_namespace_directives(ns, aliases, collection);
     ConstructSiteseer construct = new ConstructSiteseer(outbox, collection, ns, symtab, aliases);
     guide.tour(graph, construct);
     return ((object[])outbox.value);
 }
Ejemplo n.º 4
0
            private void _Traverse(AtomBox ab)
            {
                EWPF.Fixup(ab.Sub, _traverseType);
                if (!(ab.Nucleus is CharBox || ab.Nucleus is StringBox))
                {
                    EWPF.Fixup(ab.Nucleus, _traverseType);
                }
                EWPF.Fixup(ab.Sup, _traverseType);

                Leaf();
            }
Ejemplo n.º 5
0
 public override AtomVisitor visit_Atom_car()
 {
     m_atom = new AtomBox();
     return new AtomBuilder(m_atom);
 }
Ejemplo n.º 6
0
            private void ConsiderPairSpacing()
            {
                if (A == null || B == null)
                {
                    return;
                }
                Box a = A.Final.Target;
                Box b = B.Final.Target;

                /* Do TeX atom type and spacing fixup rules from p 170 and appendix G */
                Syntax.TType atype = GetTType(a), btype = GetTType(b);
                /* rule 20 */
                int spacing = IBSpacing[(int)atype, (int)btype];

                Trace.Assert(spacing != 5);
                Box space = null;

                switch (spacing)
                {
                case 0:
                    // all the code for this case is *not* part of TeX's rule 20. It comes from p 169 and applies specifically to factorial
                    // operators, so won't be correct for other possible uses of '!'
                    if (atype == Syntax.TType.Ord && a is CharBox && ((CharBox)a).C == '!')
                    {
                        CharBox   cb = b as CharBox;
                        StringBox sb = b as StringBox;
                        AtomBox   ab = b as AtomBox;
                        if ((btype == Syntax.TType.Ord && ((cb != null && (Char.IsLetter(cb.C) || Char.IsDigit(cb.C))) ||
                                                           (sb != null && (Char.IsLetter(sb.S, 0) || Char.IsDigit(sb.S, 0))))) ||
                            btype == Syntax.TType.Open)
                        {
                            space = ThinSkip();
                        }
                        else if (btype == Syntax.TType.Ord && ab != null)
                        {
                            cb = ab.Nucleus as CharBox;
                            sb = ab.Nucleus as StringBox;
                            if ((cb != null && (Char.IsLetter(cb.C) || Char.IsDigit(cb.C))) ||
                                (sb != null && (Char.IsLetter(sb.S, 0) || Char.IsDigit(sb.S, 0))))
                            {
                                space = ThinSkip();
                            }
                        }
                    }
                    break;

                case 1:
                    space = ThinSkip();
                    break;

                case 2:
                    space = MedSkip();
                    break;

                case 3:
                    space = ThickSkip();
                    break;

                case -1:
                    space = DTThinSkip();
                    break;

                case -2:
                    space = DTMedSkip();
                    break;

                case -3:
                    space = DTThickSkip();
                    break;
                }

                /* apply the spacing */
                if (space != null)
                {
                    /* Find the lowest common ancestor */
                    int found = -1;
                    for (int i = 0; i < A.P.Count && i < B.P.Count; i++)
                    {
                        if (A.P[i].Target != B.P[i].Target)
                        {
                            found = i;
                            break;
                        }
                    }
                    Trace.Assert(found != -1, "adjacent boxes are the same?");
                    Trace.Assert(A.P[found].B == B.P[found].B);
                    Trace.Assert(A.P[found].GetType() == B.P[found].GetType());
                    List <Box> boxes;
                    int        ix;
                    if (A.P[found] is HBoxLink)
                    {
                        HBoxLink hba = (HBoxLink)A.P[found];
                        HBoxLink hbb = (HBoxLink)B.P[found];
                        Trace.Assert(hba.I < hbb.I);
                        for (int i = hba.I + 1; i < hbb.I; i++)
                        {
                            Trace.Assert(hba.HB.Boxes[i] is MuSkipBox || hba.HB.Boxes[i] is DTMuSkipBox);
                        }
                        boxes = hba.HB.Boxes;
                        ix    = hbb.I;
                    }
                    else
                    {
                        DelimitedBoxLink dba = (DelimitedBoxLink)A.P[found];
                        DelimitedBoxLink dbb = (DelimitedBoxLink)B.P[found];
                        boxes = dba.DB.Contents.Boxes;
                        if (dba.Piece == DelimitedBoxLink.Which.Left)
                        {
                            Trace.Assert(dbb.Piece != DelimitedBoxLink.Which.Left);
                            ix = 0;
                        }
                        else
                        {
                            Trace.Assert(dba.Piece == DelimitedBoxLink.Which.Contents);
                            Trace.Assert(dbb.Piece == DelimitedBoxLink.Which.Right);
                            ix = boxes.Count;
                        }
                    }
                    SortedDictionary <int, Box> inserts;
                    if (!_listBoxInserts.TryGetValue(boxes, out inserts))
                    {
                        inserts = new SortedDictionary <int, Box>();
                        _listBoxInserts[boxes] = inserts;
                    }
                    inserts.Add(ix, space);
                }
            }