Initial import of exception handling code

Import exception handling code from WSS, modified to fit into the
fitz world.

With this code we have 'real' fz_try/fz_catch/fz_rethrow functions,
handling a fz_except type. We therefore rename the existing fz_throw/
fz_catch/fz_rethrow to be fz_error_make/fz_error_handle/fz_error_note.

We don't actually use fz_try/fz_catch/fz_rethrow yet...

1 files changed, 2 insertions, 2 deletions

diff --git a/pdf/pdf_xobject.c b/pdf/pdf_xobject.c
index 6228377f..630ca1d9 100644
--- a/pdf/pdf_xobject.c
+++ b/pdf/pdf_xobject.c
@@ -53,7 +53,7 @@ pdf_load_xobject(pdf_xobject **formp, pdf_xref *xref, fz_obj *dict)
 		{
 			error = pdf_load_colorspace(&form->colorspace, xref, obj);
 			if (error)
-				fz_catch(error, "cannot load xobject colorspace");
+				fz_error_handle(error, "cannot load xobject colorspace");
 		}
 	}
 
@@ -66,7 +66,7 @@ pdf_load_xobject(pdf_xobject **formp, pdf_xref *xref, fz_obj *dict)
 	{
 		pdf_remove_item(xref->store, pdf_drop_xobject, dict);
 		pdf_drop_xobject(form);
-		return fz_rethrow(error, "cannot load xobject content stream (%d %d R)", fz_to_num(dict), fz_to_gen(dict));
+		return fz_error_note(error, "cannot load xobject content stream (%d %d R)", fz_to_num(dict), fz_to_gen(dict));
 	}
 
 	*formp = form;