Refactoring based on cppcheck suggestions

src/Author.cpp

@@ -53,8 +53,7 @@ docstring Author::nameAndEmail() const
 {
 	if (email().empty())
 		return name();
-	else
-		return bformat(_("%1$s[[name]] (%2$s[[email]])"), name(), email());
+	return bformat(_("%1$s[[name]] (%2$s[[email]])"), name(), email());
 }
 
 

src/Buffer.cpp

@@ -1549,9 +1549,8 @@ bool Buffer::save() const
 		// time stamp is invalidated by copying/moving
 		saveCheckSum();
 		markClean();
-		if (d->file_format != LYX_FORMAT)
-			// the file associated with this buffer is now in the current format
-			d->file_format = LYX_FORMAT;
+		// the file associated with this buffer is now in the current format
+		d->file_format = LYX_FORMAT;
 		return true;
 	}
 	// else we saved the file, but failed to move it to the right location.

src/Compare.cpp

@@ -232,7 +232,7 @@ public:
 	///
 	Impl(Compare const & compare)
 		: abort_(false), n_(0), m_(0), offset_reverse_diagonal_(0),
-		  odd_offset_(0), compare_(compare),
+		  odd_offset_(false), compare_(compare),
 		  old_buf_(nullptr), new_buf_(nullptr), dest_buf_(nullptr),
 		  dest_pars_(nullptr), recursion_level_(0), nested_inset_level_(0), D_(0)
 	{}
@@ -413,7 +413,6 @@ void Compare::run()
 			static_cast<InsetText &>(dest_buffer->inset()), el);
 
 	finished(pimpl_->abort_);
-	return;
 }
 
 

src/CutAndPaste.cpp

@@ -737,7 +737,7 @@ void region(CursorSlice const & i1, CursorSlice const & i2,
 	    Inset::row_type & r1, Inset::row_type & r2,
 	    Inset::col_type & c1, Inset::col_type & c2)
 {
-	Inset & p = i1.inset();
+	Inset const & p = i1.inset();
 	c1 = p.col(i1.idx());
 	c2 = p.col(i2.idx());
 	if (c1 > c2)
@@ -1079,7 +1079,7 @@ void copySelectionToStack()
 }
 
 
-void copySelectionToTemp(Cursor & cur)
+void copySelectionToTemp(Cursor const & cur)
 {
 	copySelectionToStack(cur, tempCut);
 }

src/CutAndPaste.h

@@ -66,7 +66,7 @@ void cutSelectionToTemp(Cursor & cur, bool realcut = true);
 /// Push the current selection to the cut buffer and the system clipboard.
 void copySelection(Cursor const & cur);
 /// Like copySelection, but only put to temporary cut buffer
-void copySelectionToTemp(Cursor & cur);
+void copySelectionToTemp(Cursor const & cur);
 ///
 void copyInset(Cursor const & cur, Inset * inset, docstring const & plaintext);
 /**

src/LaTeX.cpp

@@ -1648,7 +1648,6 @@ int LaTeX::scanIlgFile(TeXErrors & terr)
 	string prevtoken;
 	while (getline(ifs, token)) {
 		token = rtrim(token, "\r");
-		smatch sub;
 		if (prefixIs(token, "!! "))
 			prevtoken = token;
 		else if (!prevtoken.empty()) {

src/LaTeXFonts.cpp

@@ -522,10 +522,10 @@ bool LaTeXFont::readFont(Lexer & lex)
 
 bool LaTeXFont::read(Lexer & lex)
 {
-	switchdefault_ = 0;
-	osfdefault_ = 0;
-	moreopts_ = 0;
-	osffontonly_ = 0;
+	switchdefault_ = false;
+	osfdefault_ = false;
+	moreopts_ = false;
+	osffontonly_ = false;
 
 	if (!lex.next()) {
 		lex.printError("No name given for LaTeX font: `$$Token'.");

src/Language.cpp

@@ -278,9 +278,9 @@ bool Language::readLanguage(Lexer & lex)
 
 bool Language::read(Lexer & lex)
 {
-	encoding_ = 0;
-	internal_enc_ = 0;
-	rightToLeft_ = 0;
+	encoding_ = nullptr;
+	internal_enc_ = false;
+	rightToLeft_ = false;
 
 	if (!lex.next()) {
 		lex.printError("No name given for language: `$$Token'.");

src/Paragraph.cpp

@@ -1087,7 +1087,7 @@ void Paragraph::Private::latexInset(BufferParams const & bparams,
 			runparams.local_font = &basefont;
 	}
 
-	if (fontswitch_inset && !closeLanguage && fontswitch_inset) {
+	if (fontswitch_inset && !closeLanguage) {
 		// The directionality has been switched at inset.
 		// Force markup inside.
 		runparams.local_font = &basefont;

src/Text.h

@@ -94,11 +94,11 @@ public:
 	};
 	/// Increase or decrease the nesting depth of the selected paragraph(s)
 	/// FIXME: replace Cursor with DocIterator.
-	void changeDepth(Cursor & cur, DEPTH_CHANGE type);
+	void changeDepth(Cursor const & cur, DEPTH_CHANGE type);
 
 	/// Returns whether something would be changed by changeDepth
 	/// FIXME: replace Cursor with DocIterator.
-	bool changeDepthAllowed(Cursor & cur, DEPTH_CHANGE type) const;
+	bool changeDepthAllowed(Cursor const & cur, DEPTH_CHANGE type) const;
 
 	/// Set font over selection paragraphs and rebreak.
 	/// FIXME: replace Cursor with DocIterator.
@@ -356,7 +356,7 @@ private:
 	/// handle the case where bibitems were deleted
 	bool handleBibitems(Cursor & cur);
 	/// are we in a list item (description etc.)?
-	bool inDescriptionItem(Cursor & cur) const;
+	bool inDescriptionItem(Cursor const & cur) const;
 	///
 	void charInserted(Cursor & cur);
 	/// set 'number' font property

src/Text2.cpp

@@ -222,7 +222,7 @@ static bool changeDepthAllowed(Text::DEPTH_CHANGE type,
 }
 
 
-bool Text::changeDepthAllowed(Cursor & cur, DEPTH_CHANGE type) const
+bool Text::changeDepthAllowed(Cursor const & cur, DEPTH_CHANGE type) const
 {
 	LBUFERR(this == cur.text());
 	// this happens when selecting several cells in tabular (bug 2630)
@@ -242,7 +242,7 @@ bool Text::changeDepthAllowed(Cursor & cur, DEPTH_CHANGE type) const
 }
 
 
-void Text::changeDepth(Cursor & cur, DEPTH_CHANGE type)
+void Text::changeDepth(Cursor const & cur, DEPTH_CHANGE type)
 {
 	LBUFERR(this == cur.text());
 	pit_type const beg = cur.selBegin().pit();

src/Text3.cpp

@@ -3683,9 +3683,9 @@ void Text::pasteString(Cursor & cur, docstring const & clip,
 
 
 // FIXME: an item inset would make things much easier.
-bool Text::inDescriptionItem(Cursor & cur) const
+bool Text::inDescriptionItem(Cursor const & cur) const
 {
-	Paragraph & par = cur.paragraph();
+	Paragraph const & par = cur.paragraph();
 	pos_type const pos = cur.pos();
 	pos_type const body_pos = par.beginOfBody();
 

src/TextMetrics.cpp

@@ -221,7 +221,7 @@ void TextMetrics::newParMetricsUp()
 }
 
 
-bool TextMetrics::metrics(MetricsInfo & mi, Dimension & dim, int min_width,
+bool TextMetrics::metrics(MetricsInfo const & mi, Dimension & dim, int min_width,
 			  bool const expand_on_multipars)
 {
 	LBUFERR(mi.base.textwidth > 0);
@@ -676,7 +676,7 @@ void TextMetrics::setRowAlignment(Row & row, int width) const
 	}
 
 	// are there any hfills in the row?
-	ParagraphMetrics & pm = par_metrics_[row.pit()];
+	ParagraphMetrics const & pm = par_metrics_[row.pit()];
 	int nh = numberOfHfills(row, pm, par.beginOfBody());
 	int hfill = 0;
 	int hfill_rem = 0;

src/TextMetrics.h

@@ -71,7 +71,7 @@ public:
 	void newParMetricsUp();
 
 	/// compute text metrics.
-	bool metrics(MetricsInfo & mi, Dimension & dim, int min_width = 0,
+	bool metrics(MetricsInfo const & mi, Dimension & dim, int min_width = 0,
 		     bool const expand_on_multipars = true);
 
 	/// The "nodraw" drawing stage for one single paragraph: set the

src/TocBackend.cpp

@@ -180,7 +180,7 @@ bool TocBackend::updateItem(DocIterator const & dit_in)
 	//
 	// FIXME: This is supposed to accomplish the same as the body of
 	// InsetText::iterateForToc(), probably
-	Paragraph & par = toc_item->dit().paragraph();
+	Paragraph const & par = toc_item->dit().paragraph();
 	for (auto const & table : par.insetList())
 		if (InsetArgument const * arg = table.inset->asInsetArgument()) {
 			tocstring = par.labelString();

src/Trans.cpp

@@ -200,9 +200,7 @@ void Trans::addDeadkey(tex_accent accent, docstring const & keys)
 
 int Trans::load(Lexer & lex)
 {
-	bool error = false;
-
-	while (lex.isOK() && !error) {
+	while (lex.isOK()) {
 		switch (lex.lex()) {
 		case KMOD:
 		{

src/frontends/qt/FindAndReplace.cpp

@@ -108,7 +108,7 @@ bool FindAndReplaceWidget::eventFilter(QObject * obj, QEvent * event)
 		// with shift we (temporarily) change search/replace direction
 		bool const searchback = searchbackCB->isChecked();
 		if (e->modifiers() == Qt::ShiftModifier && !searchback)
-			searchbackCB->setChecked(!searchback);
+			searchbackCB->setChecked(true);
 
 		if (obj == find_work_area_)
 			on_findNextPB_clicked();

src/frontends/qt/GuiBibtex.cpp

@@ -269,7 +269,7 @@ void GuiBibtex::clearSelection()
 }
 
 
-void GuiBibtex::setSelectedBibs(QStringList const sl)
+void GuiBibtex::setSelectedBibs(QStringList const & sl)
 {
 	selected_model_.clear();
 	QStringList headers;

src/frontends/qt/GuiBibtex.h

@@ -75,7 +75,7 @@ private:
 	/// Clear selected keys
 	void clearSelection();
 	/// Set selected keys
-	void setSelectedBibs(QStringList const);
+	void setSelectedBibs(QStringList const &);
 	/// prepares a call to GuiCitation::searchKeys when we
 	/// are ready to search the Bib entries
 	void findText(QString const & text);

src/frontends/qt/GuiBox.cpp

@@ -286,8 +286,8 @@ void GuiBox::on_pagebreakCB_stateChanged()
 {
 	bool pbreak = (pagebreakCB->checkState() == Qt::Checked);
 	if (pbreak)
-		widthCB->setChecked(!pbreak);
-	if (!pbreak) {
+		widthCB->setChecked(false);
+	else {
 		on_typeCO_activated(typeCO->currentIndex());
 		return;
 	}

src/frontends/qt/GuiCitation.cpp

@@ -654,7 +654,7 @@ void GuiCitation::clearSelection()
 }
 
 
-void GuiCitation::setSelectedKeys(QStringList const sl)
+void GuiCitation::setSelectedKeys(QStringList const & sl)
 {
 	selected_model_.clear();
 	selected_model_.setColumnCount(3);

src/frontends/qt/GuiCitation.h

@@ -117,7 +117,7 @@ private:
 	void clearSelection();
 
 	/// Set selected keys
-	void setSelectedKeys(QStringList const);
+	void setSelectedKeys(QStringList const &);
 	/// Get selected keys
 	QStringList selectedKeys();
 	/// Set pre texts of qualified lists

src/frontends/qt/GuiLyXFiles.cpp

@@ -569,7 +569,7 @@ void GuiLyXFiles::passParams(string const & data)
 }
 
 
-void GuiLyXFiles::selectItem(QString const item)
+void GuiLyXFiles::selectItem(QString const & item)
 {
 	/* Using an intermediary variable flags is needed up to at least
 	 * Qt 5.5 because of a subtle namespace issue. See:

src/frontends/qt/GuiLyXFiles.h

@@ -35,7 +35,7 @@ public:
 	/// A way to pass params to the dialog directly
 	void passParams(std::string const & data);
 	/// A way to pass params to the dialog directly
-	void selectItem(QString const item);
+	void selectItem(QString const & item);
 Q_SIGNALS:
 	void fileSelected(QString const file);
 

src/lyxfind.cpp

@@ -357,11 +357,10 @@ pair<bool, int> replaceOne(BufferView * bv, docstring searchstr,
 			   bool whole, bool forward, bool findnext)
 {
 	Cursor & cur = bv->cursor();
-	bool found = false;
 	if (!cur.selection()) {
 		// no selection, non-empty search string: find it
 		if (!searchstr.empty()) {
-			found = findOne(bv, searchstr, case_sens, whole, forward, true, findnext);
+			bool found = findOne(bv, searchstr, case_sens, whole, forward, true, findnext);
 			return make_pair(found, 0);
 		}
 		// empty search string
@@ -390,7 +389,7 @@ pair<bool, int> replaceOne(BufferView * bv, docstring searchstr,
 	// no selection or current selection is not search word:
 	// just find the search word
 	if (!have_selection || !match) {
-		found = findOne(bv, searchstr, case_sens, whole, forward, true, findnext);
+		bool found = findOne(bv, searchstr, case_sens, whole, forward, true, findnext);
 		return make_pair(found, 0);
 	}
 

src/mathed/MathStream.cpp

@@ -129,7 +129,7 @@ WriteStream::WriteStream(otexrowstream & os, bool fragile, bool latex,
 						 OutputType output, Encoding const * encoding)
 	: os_(os), fragile_(fragile), firstitem_(false), latex_(latex),
 	  output_(output), pendingspace_(false), pendingbrace_(false),
-	  textmode_(false), locked_(0), ascii_(0), canbreakline_(true),
+	  textmode_(false), locked_(false), ascii_(false), canbreakline_(true),
 	  mathsout_(false), ulemcmd_(NONE), line_(0), encoding_(encoding),
 	  row_entry_(TexRow::row_none), mathclass_(false)
 {}

src/output_latex.cpp

@@ -1668,7 +1668,7 @@ void latexParagraphs(Buffer const & buf,
 			     || par->params().leftIndent() == nextpar->params().leftIndent())
 			    && !runparams.for_search && cpar.size() > 0
 			    && cpar.isDeleted(0, cpar.size()) && !bparams.output_changes) {
-				if (!bparams.output_changes && !cpar.parEndChange().deleted())
+				if (!cpar.parEndChange().deleted())
 					os << '\n' << '\n';
 				continue;
 			}

src/support/ForkedCalls.cpp

@@ -448,7 +448,7 @@ ForkedCall::sigPtr add(string const & process);
 static queue<Process> callQueue_;
 
 /// flag whether queue is running
-static bool running_ = 0;
+static bool running_ = false;
 
 ///
 void startCaller();

src/support/debug.cpp

@@ -134,7 +134,7 @@ Debug::Type Debug::value(string const & val)
 				break;
 			}
 		if (st == string::npos)
-		break;
+    		break;
 		v.erase(0, st + 1);
 	}
 	return l;

src/support/docstring.cpp

@@ -344,8 +344,7 @@ protected:
 			const int c = wctob(i);
 			if (c == EOF)
 				break;
-			else
-				M_narrow[i] = static_cast<char>(c);
+			M_narrow[i] = static_cast<char>(c);
 		}
 		if (i == 128)
 			M_narrow_ok = true;

src/support/filetools.cpp

@@ -497,8 +497,7 @@ void removeTempFile(FileName const & fn)
 		return;
 
 	string const abs = fn.absFileName();
-	if (tmp_names_.find(abs) != tmp_names_.end())
-		tmp_names_.erase(abs);
+	tmp_names_.erase(abs);
 	fn.removeFile();
 }
 

src/support/unicode.cpp

@@ -252,8 +252,8 @@ IconvProcessor & getProc(map<string, IconvProcessor> & processors,
 	if (it == processors.end()) {
 		IconvProcessor p(fromcode, tocode);
 		return processors.insert(make_pair(encoding, move(p))).first->second;
-	} else
-		return it->second;
+	}
+	return it->second;
 }
 
 } // namespace

src/tex2lyx/Preamble.cpp

@@ -2764,7 +2764,6 @@ void Preamble::parse(Parser & p, string const & forceclass,
 			// paper sizes
 			// some size options are known by the document class, other sizes
 			// are handled by the \geometry command of the geometry package
-			string paper;
 			vector<string> class_psizes = getVectorFromString(tc.opt_pagesize(), "|");
 			string const psize_format = tc.pagesizeformat();
 			for (auto const & psize : class_psizes) {

src/tex2lyx/tex2lyx.h

@@ -48,7 +48,7 @@ extern std::string rgbcolor2code(std::string const & name);
 std::string translate_len(std::string const &);
 
 void parse_text(Parser & p, std::ostream & os, unsigned flags, bool outer,
-		Context & context, std::string const & rdelim = std::string());
+		Context & context, std::string const & rdelim = "");
 void check_comment_bib(std::ostream & os, Context & context);
 
 void fix_child_filename(std::string & name);
@@ -67,8 +67,8 @@ std::string find_file(std::string const & name, std::string const & path,
  */
 void parse_text_in_inset(Parser & p, std::ostream & os, unsigned flags,
                          bool outer, Context const & context,
-                         InsetLayout const * layout = 0,
-                         std::string const & rdelim = std::string());
+                         InsetLayout const * layout = nullptr,
+                         std::string const & rdelim = "");
 
 /// Guess document language from \p p if CJK is used.
 /// \p lang is used for all non-CJK contents.