From b6390569819a957c0f58b8d73ce9cdb94a9356df Mon Sep 17 00:00:00 2001
From: Jean-Marc Lasgouttes <lasgouttes@lyx.org>
Date: Thu, 19 May 2016 11:47:26 +0200
Subject: [PATCH] Remove declaration of classes that do not exist

Some headers contain
  class Foo;
whereas there is no class Foo.

The list of class statements is given by
  classes=`git grep  '^\(class\|struct\) [a-zA-Z_:]*;' src | sed 's/^.* \(.*\);/\1/'|sort -u`

The ones that are useless are:
  for c in $classes ; do grep -r "\\<$c\\>" src| grep -vq '^[^:]*:\(class\|struct\) [a-zA-Z_:]*;' || echo "$c"; done
---
 src/BufferParams.h         | 1 -
 src/Paragraph.h            | 2 --
 src/insets/RenderPreview.h | 1 -
 src/mathed/InsetMath.h     | 2 --
 4 files changed, 6 deletions(-)

diff --git a/src/BufferParams.h b/src/BufferParams.h
index caae01dfec..f62911c262 100644
--- a/src/BufferParams.h
+++ b/src/BufferParams.h
@@ -42,7 +42,6 @@ class Font;
 class HSpace;
 class IndicesList;
 class Language;
-class LatexFeatures;
 class LayoutFile;
 class LayoutFileIndex;
 class Lexer;
diff --git a/src/Paragraph.h b/src/Paragraph.h
index 6f8d248ca0..50516d77ae 100644
--- a/src/Paragraph.h
+++ b/src/Paragraph.h
@@ -39,12 +39,10 @@ class DocumentClass;
 class Inset;
 class InsetBibitem;
 class LaTeXFeatures;
-class Inset_code;
 class InsetList;
 class Language;
 class Layout;
 class Font;
-class Font_size;
 class MetricsInfo;
 class OutputParams;
 class PainterInfo;
diff --git a/src/insets/RenderPreview.h b/src/insets/RenderPreview.h
index cc7a4b6928..83febb3bb9 100644
--- a/src/insets/RenderPreview.h
+++ b/src/insets/RenderPreview.h
@@ -28,7 +28,6 @@
 namespace lyx {
 
 class Buffer;
-class LyXRC_PreviewStatus;
 class MetricsInfo;
 class PainterInfo;
 
diff --git a/src/mathed/InsetMath.h b/src/mathed/InsetMath.h
index deb6915e9a..b23ffb5179 100644
--- a/src/mathed/InsetMath.h
+++ b/src/mathed/InsetMath.h
@@ -85,11 +85,9 @@ class MaximaStream;
 class MathematicaStream;
 class MathStream;
 class WriteStream;
-class InfoStream;
 
 class MathMacroTemplate;
 class MathMacro;
-class MathPosFinder;
 class Cursor;
 class TextPainter;
 class TextMetricsInfo;