never ask for one past last

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@6479 a592a061-630c-0410-9148-cb99ea01b6c8

po/POTFILES.in

@@ -1,20 +1,16 @@
-src/BufferView.C
-src/BufferView_pimpl.C
-src/Chktex.C
-src/CutAndPaste.C
-src/LColor.C
-src/LaTeX.C
-src/LyXAction.C
-src/MenuBackend.C
 src/buffer.C
 src/bufferlist.C
+src/BufferView.C
 src/bufferview_funcs.C
+src/BufferView_pimpl.C
+src/Chktex.C
 src/converter.C
+src/CutAndPaste.C
 src/debug.C
 src/exporter.C
 src/format.C
-src/frontends/LyXView.C
+src/frontends/controllers/biblio.C
-src/frontends/controllers/ButtonController.h
+src/frontends/controllers/character.C
 src/frontends/controllers/ControlAboutlyx.C
 src/frontends/controllers/ControlBibtex.C
 src/frontends/controllers/ControlCharacter.C
@@ -30,14 +26,14 @@ src/frontends/controllers/ControlSearch.C
 src/frontends/controllers/ControlSpellchecker.C
 src/frontends/controllers/ControlThesaurus.C
 src/frontends/controllers/ControlVCLog.C
-src/frontends/controllers/biblio.C
-src/frontends/controllers/character.C
 src/frontends/controllers/frnt_lang.C
 src/frontends/controllers/helper_funcs.C
 src/frontends/gnome/GLog.C
+src/frontends/LyXView.C
 src/frontends/qt2/Alert_pimpl.C
 src/frontends/qt2/Dialogs3.C
 src/frontends/qt2/FileDialog.C
+src/frontends/qt2/lengthcombo.C
 src/frontends/qt2/QAbout.C
 src/frontends/qt2/QBibitem.C
 src/frontends/qt2/QBibtex.C
@@ -50,16 +46,16 @@ src/frontends/qt2/QCommandBuffer.C
 src/frontends/qt2/QDelimiterDialog.C
 src/frontends/qt2/QDocument.C
 src/frontends/qt2/QDocumentDialog.C
-src/frontends/qt2/QERT.C
 src/frontends/qt2/QError.C
+src/frontends/qt2/QERT.C
 src/frontends/qt2/QExternal.C
 src/frontends/qt2/QExternalDialog.C
 src/frontends/qt2/QFloat.C
 src/frontends/qt2/QGraphics.C
 src/frontends/qt2/QGraphicsDialog.C
 src/frontends/qt2/QInclude.C
-src/frontends/qt2/QLPrintDialog.C
 src/frontends/qt2/QLog.C
+src/frontends/qt2/QLPrintDialog.C
 src/frontends/qt2/QMathDialog.C
 src/frontends/qt2/QMathMatrixDialog.C
 src/frontends/qt2/QMinipage.C
@@ -72,18 +68,19 @@ src/frontends/qt2/QSearch.C
 src/frontends/qt2/QSendto.C
 src/frontends/qt2/QShowFile.C
 src/frontends/qt2/QSpellchecker.C
+src/frontends/qt2/Qt2BC.h
 src/frontends/qt2/QTabular.C
 src/frontends/qt2/QTabularCreate.C
 src/frontends/qt2/QTexinfo.C
 src/frontends/qt2/QThesaurus.C
 src/frontends/qt2/QToc.C
+src/frontends/qt2/QtView.C
 src/frontends/qt2/QURL.C
 src/frontends/qt2/QVCLog.C
 src/frontends/qt2/QWrap.C
-src/frontends/qt2/QtView.C
-src/frontends/qt2/lengthcombo.C
 src/frontends/xforms/Alert_pimpl.C
 src/frontends/xforms/ColorHandler.C
+src/frontends/xforms/combox.C
 src/frontends/xforms/Dialogs3.C
 src/frontends/xforms/FileDialog.C
 src/frontends/xforms/FormAboutlyx.C
@@ -95,8 +92,8 @@ src/frontends/xforms/FormCharacter.C
 src/frontends/xforms/FormCitation.C
 src/frontends/xforms/FormDialogView.C
 src/frontends/xforms/FormDocument.C
-src/frontends/xforms/FormERT.C
 src/frontends/xforms/FormError.C
+src/frontends/xforms/FormERT.C
 src/frontends/xforms/FormExternal.C
 src/frontends/xforms/FormFiledialog.C
 src/frontends/xforms/FormFloat.C
@@ -128,15 +125,15 @@ src/frontends/xforms/FormToc.C
 src/frontends/xforms/FormUrl.C
 src/frontends/xforms/FormVCLog.C
 src/frontends/xforms/FormWrap.C
-src/frontends/xforms/Menubar_pimpl.C
-src/frontends/xforms/XMiniBuffer.C
-src/frontends/xforms/combox.C
 src/frontends/xforms/input_validators.C
+src/frontends/xforms/Menubar_pimpl.C
+src/frontends/xforms/xformsBC.h
 src/frontends/xforms/xforms_helpers.C
+src/frontends/xforms/XMiniBuffer.C
 src/gettext.h
 src/importer.C
-src/insets/inset.C
 src/insets/insetbibtex.C
+src/insets/inset.C
 src/insets/insetcaption.C
 src/insets/inseterror.C
 src/insets/insetert.C
@@ -163,12 +160,15 @@ src/insets/insetwrap.C
 src/ispell.C
 src/kbsequence.C
 src/language.C
+src/LaTeX.C
+src/LColor.C
 src/lengthcommon.C
+src/LyXAction.C
 src/lyx_cb.C
-src/lyx_main.C
 src/lyxfind.C
 src/lyxfont.C
 src/lyxfunc.C
+src/lyx_main.C
 src/lyxrc.C
 src/lyxtextclasslist.C
 src/lyxvc.C
@@ -177,10 +177,12 @@ src/mathed/formulamacro.C
 src/mathed/math_hullinset.C
 src/mathed/math_parboxinset.C
 src/mathed/ref_inset.C
+src/MenuBackend.C
 src/paragraph.C
+src/paragraph_funcs.C
 src/rowpainter.C
 src/support/filetools.C
 src/tabular.C
-src/text.C
 src/text2.C
 src/text3.C
+src/text.C

src/ChangeLog

@@ -1,3 +1,28 @@
+2003-03-13  Lars Gullik Bjønnes  <larsbj@gullik.net>
+
+	* text2.C (setCursor): never ask for one past last
+	(setCursor): add some debugging messages.
+
+	* text.C (singleWidth): never ask for one past last
+	(singleWidth): ditto
+	(leftMargin): ditto
+	(rightMargin): ditto
+	(rowBreakPoint): ditto
+	(setHeightOfRow): ditto
+	(prepareToPrint): ditto
+
+	* rowpainter.C (paintBackground): never ask for one past last
+	(paintText): never ask for one past last
+
+	* paragraph_pimpl.C (getChar): make the assert stricter, never
+	allow the one past last pos to be taken
+
+	* paragraph.C (getChar): ws changes only
+
+	* lyxrow.C (nextRowIsAllInset): never ask for one past last
+	(numberOfSeparators): ditto
+	(numberOfHfills): ditto
+
 2003-03-12  John Levon  <levon@movementarian.org>
 
 	* author.h:

src/lyxrow.C

@@ -159,6 +159,9 @@ namespace {
 
 bool nextRowIsAllInset(Row const & row, pos_type last)
 {
+	if (last + 1 >= row.par()->size())
+		return false;
+
 	if (!row.par()->isInset(last + 1))
 		return false;
 
@@ -192,7 +195,7 @@ int Row::numberOfSeparators() const
 	pos_type p = max(pos(), par()->beginningOfBody());
 
 	int n = 0;
-	for (; p <= last; ++p) {
+	for (; p < last; ++p) {
 		if (par()->isSeparator(p)) {
 			++n;
 		}
@@ -208,7 +211,7 @@ int Row::numberOfHfills() const
 
 	// hfill *DO* count at the beginning of paragraphs!
 	if (first) {
-		while (first <= last && par()->isHfill(first)) {
+		while (first < last && par()->isHfill(first)) {
 			++first;
 		}
 	}
@@ -218,7 +221,7 @@ int Row::numberOfHfills() const
 	int n = 0;
 
 	// last, because the end is ignored!
-	for (pos_type p = first; p <= last; ++p) {
+	for (pos_type p = first; p < last; ++p) {
 		if (par()->isHfill(p))
 			++n;
 	}

src/paragraph_pimpl.C

@@ -252,12 +252,14 @@ void Paragraph::Pimpl::rejectChange(pos_type start, pos_type end)
 
 Paragraph::value_type Paragraph::Pimpl::getChar(pos_type pos) const
 {
-	// This is in the critical path for loading!
+	//lyx::Assert(pos <= siz);
-	pos_type const siz = size();
-	lyx::Assert(pos <= siz);
 	// This is stronger, and I belive that this is the assertion
 	// that we should really use. (Lgb)
-	//Assert(pos < size());
+	lyx::Assert(pos < size());
+
+#if 0
+	// This is in the critical path for loading!
+	pos_type const siz = size();
 
 	// Then this has no meaning. (Lgb)
 	if (!siz || pos == siz) {
@@ -266,7 +268,7 @@ Paragraph::value_type Paragraph::Pimpl::getChar(pos_type pos) const
 			<< "  is a bit silly !" << endl;
 		return '\0';
 	}
-
+#endif
 	return text[pos];
 }
 

src/rowpainter.C

@@ -312,6 +312,7 @@ bool RowPainter::paintBackground()
 	Inset const * inset = 0;
 
 	if (!bv_.screen().forceClear() && last == row_.pos()
+	    && row_.pos() < par_.size()
 	    && par_.isInset(row_.pos())) {
 		inset = par_.getInset(row_.pos());
 		clear_area = inset->doClearArea();
@@ -898,6 +899,11 @@ bool RowPainter::paintText()
 			break;
 		pos_type pos = text_.vis2log(vpos);
 
+		if (pos >= par_.size()) {
+			++vpos;
+			continue;
+		}
+
 		if (x_ + singleWidth(pos) < 0) {
 			x_ += singleWidth(pos);
 			++vpos;

src/text.C

@@ -206,6 +206,9 @@ unsigned char LyXText::transformChar(unsigned char c, Paragraph * par,
 int LyXText::singleWidth(BufferView * bview, Paragraph * par,
 			 pos_type pos) const
 {
+	if (pos >= par->size())
+		return 0;
+
 	char const c = par->getChar(pos);
 	return singleWidth(bview, par, pos, c);
 }
@@ -214,6 +217,9 @@ int LyXText::singleWidth(BufferView * bview, Paragraph * par,
 int LyXText::singleWidth(BufferView * bview, Paragraph * par,
 			 pos_type pos, char c) const
 {
+	if (pos >= par->size())
+		return 0;
+
 	LyXFont const font = getFont(bview->buffer(), par, pos);
 
 	// The most common case is handled first (Asger)
@@ -422,6 +428,8 @@ bool LyXText::isBoundary(Buffer const * buf, Paragraph * par,
 int LyXText::leftMargin(BufferView * bview, Row const * row) const
 {
 	Inset * ins;
+
+	if (row->pos() < row->par()->size())
 		if ((row->par()->getChar(row->pos()) == Paragraph::META_INSET) &&
 		    (ins = row->par()->getInset(row->pos())) &&
 		    (ins->needFullRow() || ins->display()))
@@ -615,6 +623,8 @@ int LyXText::leftMargin(BufferView * bview, Row const * row) const
 int LyXText::rightMargin(Buffer const & buf, Row const & row) const
 {
 	Inset * ins;
+
+	if (row.pos() < row.par()->size())
 		if ((row.par()->getChar(row.pos()) == Paragraph::META_INSET) &&
 		    (ins=row.par()->getInset(row.pos())) &&
 		    (ins->needFullRow() || ins->display()))
@@ -722,7 +732,9 @@ LyXText::rowBreakPoint(BufferView & bv, Row const & row) const
 	pos_type const body_pos = par->beginningOfBody();
 	pos_type const last = par->size();
 	pos_type point = last;
-	pos_type i = pos;
+
+	if (pos == last)
+		return last;
 
 	// Now we iterate through until we reach the right margin
 	// or the end of the par, then choose the possible break
@@ -734,7 +746,8 @@ LyXText::rowBreakPoint(BufferView & bv, Row const & row) const
 	// pixel width since last breakpoint
 	int chunkwidth = 0;
 
-	for (i = pos; i < last; ++i) {
+	pos_type i = pos;
+	for (; i < last; ++i) {
 
 		if (par->isNewline(i)) {
 			point = i;
@@ -976,7 +989,7 @@ void LyXText::setHeightOfRow(BufferView * bview, Row * row) const
 	int maxwidth = 0;
 
 	// Check if any insets are larger
-	for (pos_type pos = row->pos(); pos <= pos_end; ++pos) {
+	for (pos_type pos = row->pos(); pos < pos_end; ++pos) {
 		if (row->par()->isInset(pos)) {
 			tmpfont = getFont(bview->buffer(), row->par(), pos);
 			tmpinset = row->par()->getInset(pos);
@@ -1594,7 +1607,8 @@ void LyXText::insertChar(BufferView * bview, char c)
 	}
 
 	// the display inset stuff
-	if (cursor.row()->par()->isInset(cursor.row()->pos())) {
+	if (cursor.row()->pos() < cursor.row()->par()->size()
+	    && cursor.row()->par()->isInset(cursor.row()->pos())) {
 		Inset * inset = cursor.row()->par()->getInset(cursor.row()->pos());
 		if (inset && (inset->display() || inset->needFullRow())) {
 			// force a new break
@@ -1814,7 +1828,8 @@ void LyXText::prepareToPrint(BufferView * bview,
 
 		// center displayed insets
 		Inset * inset;
-		if (row->par()->isInset(row->pos())
+		if (row->pos() < row->par()->size()
+		    && row->par()->isInset(row->pos())
 		    && (inset = row->par()->getInset(row->pos()))
 		    && (inset->display())) // || (inset->scroll() < 0)))
 		    align = (inset->lyxCode() == Inset::MATHMACRO_CODE)

src/text2.C

@@ -1769,6 +1769,7 @@ void LyXText::setCursor(BufferView * bview, LyXCursor & cur, Paragraph * par,
 	Inset * ins;
 	if (row->previous() && pos &&
 		row->previous()->par() == row->par() &&
+	    pos < par->size() &&
 		par->getChar(pos) == Paragraph::META_INSET &&
 		(ins = par->getInset(pos)) && (ins->needFullRow() || ins->display()))
 	{
@@ -1786,13 +1787,16 @@ void LyXText::setCursor(BufferView * bview, LyXCursor & cur, Paragraph * par,
 
 	// None of these should happen, but we're scaredy-cats
 	if (pos > par->size()) {
+		lyxerr << "dont like 1 please report" << endl;
 		pos = 0;
 		cur.pos(0);
 	} else if (pos > last + 1) {
+		lyxerr << "dont like 2 please report" << endl;
 		// This shouldn't happen.
 		pos = last + 1;
 		cur.pos(pos);
 	} else if (pos < row->pos()) {
+		lyxerr << "dont like 3 please report" << endl;
 		pos = row->pos();
 		cur.pos(pos);
 	}