cleanup parser code at least

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@24323 a592a061-630c-0410-9148-cb99ea01b6c8

src/tex2lyx/Parser.cpp

@@ -307,7 +307,7 @@ string Parser::getFullOpt()
 	Arg arg = getFullArg('[', ']');
 	if (arg.first)
 		return '[' + arg.second + ']';
-	return arg.second;
+	return string();
 }
 
 
@@ -317,14 +317,16 @@ string Parser::getOpt()
 	return res.empty() ? string() : '[' + res + ']';
 }
 
+
 string Parser::getFullParentheseArg()
 {
 	Arg arg = getFullArg('(', ')');
 	if (arg.first)
 		return '(' + arg.second + ')';
-	return arg.second;
+	return string();
 }
 
+
 string const Parser::verbatimEnvironment(string const & name)
 {
 	if (!good())

src/tex2lyx/Parser.h

@@ -148,20 +148,29 @@ public:
 	std::string getArg(char left, char right);
 	/*!
 	 * \returns getFullArg('[', ']') including the brackets or the
-	 * empty string if no argument was found.
+	 * empty string if there is no such argument.
 	 */
 	std::string getFullOpt();
-	/// \returns getArg('[', ']') including the brackets
+	/*!
+	 * \returns getArg('[', ']') including the brackets or the
+	 * empty string if there is no such argument.
+	 */
 	std::string getOpt();
+	/*!
+	 * \returns getFullArg('(', ')') including the parentheses or the
+	 * empty string if there is no such argument.
+	 */
+	std::string getFullParentheseArg();
 	/*!
 	 * \returns the contents of the environment \p name.
 	 * <tt>\begin{name}</tt> must be parsed already, <tt>\end{name}</tt>
 	 * is parsed but not returned.
 	 */
-	std::string getFullParentheseArg();
-	/// \returns getArg('(', ')') including the parentheses
 	std::string const verbatimEnvironment(std::string const & name);
-	/// Returns the character of the current token and increments the token position.
+	/*!
+	 * Returns the character of the current token and increments
+	 * the token position.
+	 */
 	char getChar();
 	///
 	void error(std::string const & msg);