Use set of coercion functions for transforming WndProc parameters into pointers.

3 files changed, 63 insertions, 44 deletions

diff --git a/src/Editor.cxx b/src/Editor.cxx
index 29dcc9dbd..e869886fe 100644
--- a/src/Editor.cxx
+++ b/src/Editor.cxx
@@ -4015,7 +4015,7 @@ Sci::Position Editor::FindText(
     ///< @c SCFIND_WORDSTART, @c SCFIND_REGEXP or @c SCFIND_POSIX.
     sptr_t lParam) {	///< @c Sci_TextToFind structure: The text to search for in the given range.
 
-	Sci_TextToFind *ft = reinterpret_cast<Sci_TextToFind *>(lParam);
+	Sci_TextToFind *ft = static_cast<Sci_TextToFind *>(PtrFromSPtr(lParam));
 	Sci::Position lengthFound = strlen(ft->lpstrText);
 	if (!pdoc->HasCaseFolder())
 		pdoc->SetCaseFolder(CaseFolderForEncoding());
@@ -4063,7 +4063,7 @@ Sci::Position Editor::SearchText(
     ///< @c SCFIND_WORDSTART, @c SCFIND_REGEXP or @c SCFIND_POSIX.
     sptr_t lParam) {			///< The text to search for.
 
-	const char *txt = reinterpret_cast<char *>(lParam);
+	const char *txt = CharPtrFromSPtr(lParam);
 	Sci::Position pos;
 	Sci::Position lengthFound = strlen(txt);
 	if (!pdoc->HasCaseFolder())
@@ -5594,10 +5594,6 @@ bool Editor::ValidMargin(uptr_t wParam) const {
 	return wParam < vs.ms.size();
 }
 
-static char *CharPtrFromSPtr(sptr_t lParam) {
-	return reinterpret_cast<char *>(lParam);
-}
-
 void Editor::StyleSetMessage(unsigned int iMessage, uptr_t wParam, sptr_t lParam) {
 	vs.EnsureStyle(wParam);
 	switch (iMessage) {
@@ -6072,7 +6068,7 @@ sptr_t Editor::WndProc(unsigned int iMessage, uptr_t wParam, sptr_t lParam) {
 	case SCI_GETTEXTRANGE: {
 			if (lParam == 0)
 				return 0;
-			Sci_TextRange *tr = reinterpret_cast<Sci_TextRange *>(lParam);
+			Sci_TextRange *tr = static_cast<Sci_TextRange *>(PtrFromSPtr(lParam));
 			Sci::Position cpMax = static_cast<Sci::Position>(tr->chrg.cpMax);
 			if (cpMax == -1)
 				cpMax = pdoc->Length();
@@ -6090,7 +6086,7 @@ sptr_t Editor::WndProc(unsigned int iMessage, uptr_t wParam, sptr_t lParam) {
 		break;
 
 	case SCI_FORMATRANGE:
-		return FormatRange(wParam != 0, reinterpret_cast<Sci_RangeToFormat *>(lParam));
+		return FormatRange(wParam != 0, static_cast<Sci_RangeToFormat *>(PtrFromSPtr(lParam)));
 
 	case SCI_GETMARGINLEFT:
 		return vs.leftMarginWidth;
@@ -6185,33 +6181,33 @@ sptr_t Editor::WndProc(unsigned int iMessage, uptr_t wParam, sptr_t lParam) {
 		break;
 
 	case SCI_GETWORDCHARS:
-		return pdoc->GetCharsOfClass(CharClassify::ccWord, reinterpret_cast<unsigned char *>(lParam));
+		return pdoc->GetCharsOfClass(CharClassify::ccWord, UCharPtrFromSPtr(lParam));
 
 	case SCI_SETWORDCHARS: {
 			pdoc->SetDefaultCharClasses(false);
 			if (lParam == 0)
 				return 0;
-			pdoc->SetCharClasses(reinterpret_cast<unsigned char *>(lParam), CharClassify::ccWord);
+			pdoc->SetCharClasses(ConstUCharPtrFromSPtr(lParam), CharClassify::ccWord);
 		}
 		break;
 
 	case SCI_GETWHITESPACECHARS:
-		return pdoc->GetCharsOfClass(CharClassify::ccSpace, reinterpret_cast<unsigned char *>(lParam));
+		return pdoc->GetCharsOfClass(CharClassify::ccSpace, UCharPtrFromSPtr(lParam));
 
 	case SCI_SETWHITESPACECHARS: {
 			if (lParam == 0)
 				return 0;
-			pdoc->SetCharClasses(reinterpret_cast<unsigned char *>(lParam), CharClassify::ccSpace);
+			pdoc->SetCharClasses(ConstUCharPtrFromSPtr(lParam), CharClassify::ccSpace);
 		}
 		break;
 
 	case SCI_GETPUNCTUATIONCHARS:
-		return pdoc->GetCharsOfClass(CharClassify::ccPunctuation, reinterpret_cast<unsigned char *>(lParam));
+		return pdoc->GetCharsOfClass(CharClassify::ccPunctuation, UCharPtrFromSPtr(lParam));
 
 	case SCI_SETPUNCTUATIONCHARS: {
 			if (lParam == 0)
 				return 0;
-			pdoc->SetCharClasses(reinterpret_cast<unsigned char *>(lParam), CharClassify::ccPunctuation);
+			pdoc->SetCharClasses(ConstUCharPtrFromSPtr(lParam), CharClassify::ccPunctuation);
 		}
 		break;
 
@@ -6315,7 +6311,7 @@ sptr_t Editor::WndProc(unsigned int iMessage, uptr_t wParam, sptr_t lParam) {
 	case SCI_GETSTYLEDTEXT: {
 			if (lParam == 0)
 				return 0;
-			Sci_TextRange *tr = reinterpret_cast<Sci_TextRange *>(lParam);
+			Sci_TextRange *tr = static_cast<Sci_TextRange *>(PtrFromSPtr(lParam));
 			int iPlace = 0;
 			for (long iChar = tr->chrg.cpMin; iChar < tr->chrg.cpMax; iChar++) {
 				tr->lpstrText[iPlace++] = pdoc->CharAt(iChar);
@@ -6878,7 +6874,7 @@ sptr_t Editor::WndProc(unsigned int iMessage, uptr_t wParam, sptr_t lParam) {
 
 	case SCI_MARKERDEFINERGBAIMAGE:
 		if (wParam <= MARKER_MAX) {
-			vs.markers[wParam].SetRGBAImage(sizeRGBAImage, scaleRGBAImage / 100.0f, reinterpret_cast<unsigned char *>(lParam));
+			vs.markers[wParam].SetRGBAImage(sizeRGBAImage, scaleRGBAImage / 100.0f, ConstUCharPtrFromSPtr(lParam));
 			vs.CalcLargestMarkerHeight();
 		}
 		InvalidateStyleData();
@@ -7590,7 +7586,7 @@ sptr_t Editor::WndProc(unsigned int iMessage, uptr_t wParam, sptr_t lParam) {
 
 	case SCI_SETDOCPOINTER:
 		CancelModes();
-		SetDocPointer(reinterpret_cast<Document *>(lParam));
+		SetDocPointer(static_cast<Document *>(PtrFromSPtr(lParam)));
 		return 0;
 
 	case SCI_CREATEDOCUMENT: {
@@ -7602,11 +7598,11 @@ sptr_t Editor::WndProc(unsigned int iMessage, uptr_t wParam, sptr_t lParam) {
 		}
 
 	case SCI_ADDREFDOCUMENT:
-		(reinterpret_cast<Document *>(lParam))->AddRef();
+		(static_cast<Document *>(PtrFromSPtr(lParam)))->AddRef();
 		break;
 
 	case SCI_RELEASEDOCUMENT:
-		(reinterpret_cast<Document *>(lParam))->Release();
+		(static_cast<Document *>(PtrFromSPtr(lParam)))->Release();
 		break;
 
 	case SCI_GETDOCUMENTOPTIONS:
@@ -7752,12 +7748,12 @@ sptr_t Editor::WndProc(unsigned int iMessage, uptr_t wParam, sptr_t lParam) {
 		return vs.controlCharSymbol;
 
 	case SCI_SETREPRESENTATION:
-		reprs.SetRepresentation(reinterpret_cast<const char *>(wParam), CharPtrFromSPtr(lParam));
+		reprs.SetRepresentation(ConstCharPtrFromUPtr(wParam), ConstCharPtrFromSPtr(lParam));
 		break;
 
 	case SCI_GETREPRESENTATION: {
 			const Representation *repr = reprs.RepresentationFromCharacter(
-				reinterpret_cast<const char *>(wParam), UTF8MaxBytes);
+				ConstCharPtrFromUPtr(wParam), UTF8MaxBytes);
 			if (repr) {
 				return StringResult(lParam, repr->stringRep.c_str());
 			}
@@ -7765,7 +7761,7 @@ sptr_t Editor::WndProc(unsigned int iMessage, uptr_t wParam, sptr_t lParam) {
 		}
 
 	case SCI_CLEARREPRESENTATION:
-		reprs.ClearRepresentation(reinterpret_cast<const char *>(wParam));
+		reprs.ClearRepresentation(ConstCharPtrFromUPtr(wParam));
 		break;
 
 	case SCI_STARTRECORD:
@@ -7889,7 +7885,7 @@ sptr_t Editor::WndProc(unsigned int iMessage, uptr_t wParam, sptr_t lParam) {
 		}
 
 	case SCI_MARGINSETSTYLES:
-		pdoc->MarginSetStyles(static_cast<Sci::Line>(wParam), reinterpret_cast<const unsigned char *>(lParam));
+		pdoc->MarginSetStyles(static_cast<Sci::Line>(wParam), ConstUCharPtrFromSPtr(lParam));
 		break;
 
 	case SCI_MARGINGETSTYLES: {
@@ -7920,7 +7916,7 @@ sptr_t Editor::WndProc(unsigned int iMessage, uptr_t wParam, sptr_t lParam) {
 		break;
 
 	case SCI_ANNOTATIONSETSTYLES:
-		pdoc->AnnotationSetStyles(static_cast<Sci::Line>(wParam), reinterpret_cast<const unsigned char *>(lParam));
+		pdoc->AnnotationSetStyles(static_cast<Sci::Line>(wParam), ConstUCharPtrFromSPtr(lParam));
 		break;
 
 	case SCI_ANNOTATIONGETSTYLES: {
diff --git a/src/Editor.h b/src/Editor.h
index f45d18661..9fda8ddea 100644
--- a/src/Editor.h
+++ b/src/Editor.h
@@ -568,6 +568,29 @@ protected:	// ScintillaBase subclass needs access to much of Editor
 
 	static const char *StringFromEOLMode(int eolMode);
 
+	// Coercion functions for transforming WndProc parameters into pointers
+	static void *PtrFromSPtr(sptr_t lParam) {
+		return reinterpret_cast<void *>(lParam);
+	}
+	static const char *ConstCharPtrFromSPtr(sptr_t lParam) {
+		return static_cast<const char *>(PtrFromSPtr(lParam));
+	}
+	static const unsigned char *ConstUCharPtrFromSPtr(sptr_t lParam) {
+		return static_cast<const unsigned char *>(PtrFromSPtr(lParam));
+	}
+	static char *CharPtrFromSPtr(sptr_t lParam) {
+		return static_cast<char *>(PtrFromSPtr(lParam));
+	}
+	static unsigned char *UCharPtrFromSPtr(sptr_t lParam) {
+		return static_cast<unsigned char *>(PtrFromSPtr(lParam));
+	}
+	static void *PtrFromUPtr(uptr_t wParam) {
+		return reinterpret_cast<void *>(wParam);
+	}
+	static const char *ConstCharPtrFromUPtr(uptr_t wParam) {
+		return static_cast<const char *>(PtrFromUPtr(wParam));
+	}
+
 	static sptr_t StringResult(sptr_t lParam, const char *val);
 	static sptr_t BytesResult(sptr_t lParam, const unsigned char *val, size_t len);
 
diff --git a/src/ScintillaBase.cxx b/src/ScintillaBase.cxx
index 353392b09..9c4e8cf78 100644
--- a/src/ScintillaBase.cxx
+++ b/src/ScintillaBase.cxx
@@ -846,7 +846,7 @@ sptr_t ScintillaBase::WndProc(unsigned int iMessage, uptr_t wParam, sptr_t lPara
 	switch (iMessage) {
 	case SCI_AUTOCSHOW:
 		listType = 0;
-		AutoCompleteStart(static_cast<Sci::Position>(wParam), reinterpret_cast<const char *>(lParam));
+		AutoCompleteStart(static_cast<Sci::Position>(wParam), ConstCharPtrFromSPtr(lParam));
 		break;
 
 	case SCI_AUTOCCANCEL:
@@ -871,18 +871,18 @@ sptr_t ScintillaBase::WndProc(unsigned int iMessage, uptr_t wParam, sptr_t lPara
 		return ac.GetSeparator();
 
 	case SCI_AUTOCSTOPS:
-		ac.SetStopChars(reinterpret_cast<char *>(lParam));
+		ac.SetStopChars(ConstCharPtrFromSPtr(lParam));
 		break;
 
 	case SCI_AUTOCSELECT:
-		ac.Select(reinterpret_cast<char *>(lParam));
+		ac.Select(ConstCharPtrFromSPtr(lParam));
 		break;
 
 	case SCI_AUTOCGETCURRENT:
 		return AutoCompleteGetCurrent();
 
 	case SCI_AUTOCGETCURRENTTEXT:
-		return AutoCompleteGetCurrentText(reinterpret_cast<char *>(lParam));
+		return AutoCompleteGetCurrentText(CharPtrFromSPtr(lParam));
 
 	case SCI_AUTOCSETCANCELATSTART:
 		ac.cancelAtStartPos = wParam != 0;
@@ -892,7 +892,7 @@ sptr_t ScintillaBase::WndProc(unsigned int iMessage, uptr_t wParam, sptr_t lPara
 		return ac.cancelAtStartPos;
 
 	case SCI_AUTOCSETFILLUPS:
-		ac.SetFillUpChars(reinterpret_cast<char *>(lParam));
+		ac.SetFillUpChars(ConstCharPtrFromSPtr(lParam));
 		break;
 
 	case SCI_AUTOCSETCHOOSESINGLE:
@@ -932,7 +932,7 @@ sptr_t ScintillaBase::WndProc(unsigned int iMessage, uptr_t wParam, sptr_t lPara
 
 	case SCI_USERLISTSHOW:
 		listType = static_cast<int>(wParam);
-		AutoCompleteStart(0, reinterpret_cast<const char *>(lParam));
+		AutoCompleteStart(0, ConstCharPtrFromSPtr(lParam));
 		break;
 
 	case SCI_AUTOCSETAUTOHIDE:
@@ -964,12 +964,12 @@ sptr_t ScintillaBase::WndProc(unsigned int iMessage, uptr_t wParam, sptr_t lPara
 		return maxListWidth;
 
 	case SCI_REGISTERIMAGE:
-		ac.lb->RegisterImage(static_cast<int>(wParam), reinterpret_cast<const char *>(lParam));
+		ac.lb->RegisterImage(static_cast<int>(wParam), ConstCharPtrFromSPtr(lParam));
 		break;
 
 	case SCI_REGISTERRGBAIMAGE:
 		ac.lb->RegisterRGBAImage(static_cast<int>(wParam), static_cast<int>(sizeRGBAImage.x), static_cast<int>(sizeRGBAImage.y),
-			reinterpret_cast<unsigned char *>(lParam));
+			ConstUCharPtrFromSPtr(lParam));
 		break;
 
 	case SCI_CLEARREGISTEREDIMAGES:
@@ -985,7 +985,7 @@ sptr_t ScintillaBase::WndProc(unsigned int iMessage, uptr_t wParam, sptr_t lPara
 
 	case SCI_CALLTIPSHOW:
 		CallTipShow(LocationFromPosition(static_cast<Sci::Position>(wParam)),
-			reinterpret_cast<const char *>(lParam));
+			ConstCharPtrFromSPtr(lParam));
 		break;
 
 	case SCI_CALLTIPCANCEL:
@@ -1056,26 +1056,26 @@ sptr_t ScintillaBase::WndProc(unsigned int iMessage, uptr_t wParam, sptr_t lPara
 		break;
 
 	case SCI_SETPROPERTY:
-		DocumentLexState()->PropSet(reinterpret_cast<const char *>(wParam),
-		          reinterpret_cast<const char *>(lParam));
+		DocumentLexState()->PropSet(ConstCharPtrFromUPtr(wParam),
+		          ConstCharPtrFromSPtr(lParam));
 		break;
 
 	case SCI_GETPROPERTY:
-		return StringResult(lParam, DocumentLexState()->PropGet(reinterpret_cast<const char *>(wParam)));
+		return StringResult(lParam, DocumentLexState()->PropGet(ConstCharPtrFromUPtr(wParam)));
 
 	case SCI_GETPROPERTYEXPANDED:
-		return DocumentLexState()->PropGetExpanded(reinterpret_cast<const char *>(wParam),
-			reinterpret_cast<char *>(lParam));
+		return DocumentLexState()->PropGetExpanded(ConstCharPtrFromUPtr(wParam),
+			CharPtrFromSPtr(lParam));
 
 	case SCI_GETPROPERTYINT:
-		return DocumentLexState()->PropGetInt(reinterpret_cast<const char *>(wParam), static_cast<int>(lParam));
+		return DocumentLexState()->PropGetInt(ConstCharPtrFromUPtr(wParam), static_cast<int>(lParam));
 
 	case SCI_SETKEYWORDS:
-		DocumentLexState()->SetWordList(static_cast<int>(wParam), reinterpret_cast<const char *>(lParam));
+		DocumentLexState()->SetWordList(static_cast<int>(wParam), ConstCharPtrFromSPtr(lParam));
 		break;
 
 	case SCI_SETLEXERLANGUAGE:
-		DocumentLexState()->SetLexerLanguage(reinterpret_cast<const char *>(lParam));
+		DocumentLexState()->SetLexerLanguage(ConstCharPtrFromSPtr(lParam));
 		break;
 
 	case SCI_GETLEXERLANGUAGE:
@@ -1094,11 +1094,11 @@ sptr_t ScintillaBase::WndProc(unsigned int iMessage, uptr_t wParam, sptr_t lPara
 		return StringResult(lParam, DocumentLexState()->PropertyNames());
 
 	case SCI_PROPERTYTYPE:
-		return DocumentLexState()->PropertyType(reinterpret_cast<const char *>(wParam));
+		return DocumentLexState()->PropertyType(ConstCharPtrFromUPtr(wParam));
 
 	case SCI_DESCRIBEPROPERTY:
 		return StringResult(lParam,
-				    DocumentLexState()->DescribeProperty(reinterpret_cast<const char *>(wParam)));
+				    DocumentLexState()->DescribeProperty(ConstCharPtrFromUPtr(wParam)));
 
 	case SCI_DESCRIBEKEYWORDSETS:
 		return StringResult(lParam, DocumentLexState()->DescribeWordListSets());
@@ -1127,7 +1127,7 @@ sptr_t ScintillaBase::WndProc(unsigned int iMessage, uptr_t wParam, sptr_t lPara
 
 	case SCI_SETIDENTIFIERS:
 		DocumentLexState()->SetIdentifiers(static_cast<int>(wParam),
-						   reinterpret_cast<const char *>(lParam));
+						   ConstCharPtrFromSPtr(lParam));
 		break;
 
 	case SCI_DISTANCETOSECONDARYSTYLES: