Add SC_DOCUMENTOPTION_TEXT_LARGE option for documents larger than 2 GigaBytes.

This option is provisional and experimental.

1 files changed, 7 insertions, 2 deletions

diff --git a/src/Document.cxx b/src/Document.cxx
index 09a91d469..4765248d1 100644
--- a/src/Document.cxx
+++ b/src/Document.cxx
@@ -82,7 +82,7 @@ int LexInterface::LineEndTypesSupported() {
 }
 
 Document::Document(int options) :
-	cb((options & SC_DOCUMENTOPTION_STYLES_NONE) == 0) {
+	cb((options & SC_DOCUMENTOPTION_STYLES_NONE) == 0, (options & SC_DOCUMENTOPTION_TEXT_LARGE) != 0) {
 	refCount = 0;
 #ifdef _WIN32
 	eolMode = SC_EOL_CRLF;
@@ -113,7 +113,7 @@ Document::Document(int options) :
 	perLineData[ldMargin] = std::make_unique<LineAnnotation>();
 	perLineData[ldAnnotation] = std::make_unique<LineAnnotation>();
 
-	decorations = DecorationListCreate(false);
+	decorations = DecorationListCreate(IsLarge());
 
 	cb.SetPerLine(this);
 }
@@ -1520,6 +1520,11 @@ void Document::ConvertLineEnds(int eolModeSet) {
 
 }
 
+int Document::Options() const {
+	return (IsLarge() ? SC_DOCUMENTOPTION_TEXT_LARGE : 0) |
+		(cb.HasStyles() ? 0 : SC_DOCUMENTOPTION_STYLES_NONE);
+}
+
 bool Document::IsWhiteLine(Sci::Line line) const {
 	Sci::Position currentChar = static_cast<Sci::Position>(LineStart(line));
 	const Sci::Position endLine = static_cast<Sci::Position>(LineEnd(line));