Backport: Pass argument as unique_ptr to show transfer of ownership. Add const and noexcept.

Backport of changeset 8106:f26e186e80a9.

3 files changed, 6 insertions, 6 deletions

diff --git a/src/Document.cxx b/src/Document.cxx
index d85b71106..6670bbdb3 100644
--- a/src/Document.cxx
+++ b/src/Document.cxx
@@ -2265,12 +2265,12 @@ void Document::LexerChanged() {
 	}
 }
 
-LexInterface *Document::GetLexInterface() const {
+LexInterface *Document::GetLexInterface() const noexcept {
 	return pli.get();
 }
 
-void Document::SetLexInterface(LexInterface *pLexInterface) {
-	pli.reset(pLexInterface);
+void Document::SetLexInterface(std::unique_ptr<LexInterface> pLexInterface) noexcept {
+	pli = std::move(pLexInterface);
 }
 
 int SCI_METHOD Document::SetLineState(Sci_Position line, int state) {
diff --git a/src/Document.h b/src/Document.h
index f105e825a..efce835d4 100644
--- a/src/Document.h
+++ b/src/Document.h
@@ -459,8 +459,8 @@ public:
 	void IncrementStyleClock() noexcept;
 	void SCI_METHOD DecorationSetCurrentIndicator(int indicator) override;
 	void SCI_METHOD DecorationFillRange(Sci_Position position, int value, Sci_Position fillLength) override;
-	LexInterface *GetLexInterface() const;
-	void SetLexInterface(LexInterface *pLexInterface);
+	LexInterface *GetLexInterface() const noexcept;
+	void SetLexInterface(std::unique_ptr<LexInterface> pLexInterface) noexcept;
 
 	int SCI_METHOD SetLineState(Sci_Position line, int state) override;
 	int SCI_METHOD GetLineState(Sci_Position line) const override;
diff --git a/src/ScintillaBase.cxx b/src/ScintillaBase.cxx
index 0975028f3..082cb82d5 100644
--- a/src/ScintillaBase.cxx
+++ b/src/ScintillaBase.cxx
@@ -615,7 +615,7 @@ LexState::~LexState() {
 
 LexState *ScintillaBase::DocumentLexState() {
 	if (!pdoc->GetLexInterface()) {
-		pdoc->SetLexInterface(new LexState(pdoc));
+		pdoc->SetLexInterface(Sci::make_unique<LexState>(pdoc));
 	}
 	return dynamic_cast<LexState *>(pdoc->GetLexInterface());
 }