improved handling of aliasses and warnings

src/data/stylesheet.cpp

@@ -40,6 +40,7 @@ IMPLEMENT_REFLECTION(StyleSheet) {
 	tag.addAlias(300, _("dpi"),        _("card_dpi"));
 	tag.addAlias(300, _("background"), _("card_background"));
 	tag.addAlias(300, _("info_style"), _("set_info_style"));
+	tag.addAlias(300, _("align"),      _("alignment"));
 	
 	REFLECT(game);
 	REFLECT(full_name);

src/script/scriptable.cpp

@@ -32,12 +32,20 @@ ScriptValueP OptionalScript::invoke(Context& ctx) const {
 	}
 }
 
+void OptionalScript::parse(Reader& reader) {
+	try {
+		script = ::parse(unparsed);
+	} catch (const ParseError& e) {
+		reader.warning(e.what());
+	}
+}
+
+
 // custom reflection, different for each type
 
 template <> void Reader::handle(OptionalScript& os) {
 	handle(os.unparsed);
-	// read the script
-	os.script = parse(os.unparsed);
+	os.parse(*this);
 }
 
 template <> void Writer::handle(const OptionalScript& os) {

src/script/scriptable.hpp

@@ -59,6 +59,8 @@ class OptionalScript {
   private:
 	ScriptP script;		///< The script, may be null if there is no script
 	String unparsed;	///< Unparsed script, for writing back to a file
+	// parse the unparsed string, while reading
+	void parse(Reader&);
 	DECLARE_REFLECTION();
 	template <typename T> friend class Scriptable;
 };
@@ -95,7 +97,8 @@ template <typename T>
 void Reader::handle(Scriptable<T>& s) {
 	handle(s.script.unparsed);
 	if (starts_with(s.script.unparsed, _("script:"))) {
-		s.script.script   = parse(s.script.unparsed);
+		s.script.unparsed = s.script.unparsed.substr(7);
+		s.script.parse(*this);
 	} else {
 		handle(value);
 	}

src/util/io/reader.cpp

@@ -52,7 +52,14 @@ void Reader::handleAppVersion() {
 }
 
 void Reader::warning(const String& msg) {
-	wxMessageBox((msg + _("\nOn line: ")) << line_number << _("\nIn file: ") << filename, _("Warning"), wxOK | wxICON_EXCLAMATION);
+	warnings += String(_("\nOn line ")) << line_number << _(": \t") << msg;
+}
+
+void Reader::showWarnings() {
+	if (!warnings.empty()) {
+		wxMessageBox(_("Warnings while reading file:\n") + filename + _("\n") + warnings, _("Warning"), wxOK | wxICON_EXCLAMATION);
+		warnings.clear();
+	}
 }
 
 bool Reader::enterBlock(const Char* name) {
@@ -118,14 +125,20 @@ void Reader::readLine() {
 	}
 	key   = cannocial_name_form(trim(line.substr(indent, pos - indent)));
 	value = pos == String::npos ? _("") : trim_left(line.substr(pos+1));
+}
+
+void Reader::unknownKey() {
 	// aliasses?
 	map<String,String>::const_iterator it = aliasses.find(key);
 	if (it != aliasses.end()) {
+		if (aliasses.find(it->second) != aliasses.end()) {
+			// alias points to another alias, don't follow it, there is the risk of infinite loops
+		} else {
+			// try this key instead
 			key = it->second;
+			return;
+		}
 	}
-}
-
-void Reader::unknownKey() {
 	if (indent == expected_indent) {
 		warning(_("Unexpected key: '") + key + _("'"));
 		do {

src/util/io/reader.hpp

@@ -42,6 +42,8 @@ class Reader {
 	/** Used for "include file" keys. */
 	Reader(const String& filename);
 	
+	~Reader() { showWarnings(); }
+	
 	/// Tell the reflection code we are reading
 	inline bool reading() const { return true; }
 	/// Is the thing currently being read 'complex', i.e. does it have children
@@ -52,8 +54,10 @@ class Reader {
 	/// Read and check the application version
 	void handleAppVersion();
 	
-	/// Show a warning message, but continue reading
+	/// Add a warning message, but continue reading
 	void warning(const String& msg);
+	/// Show all warning messages, but continue reading
+	void showWarnings();
 	
 	// --------------------------------------------------- : Handling objects
 	/// Handle an object: read it if it's name matches
@@ -111,6 +115,8 @@ class Reader {
 	InputStreamP input;
 	/// Text stream wrapping the input stream
 	wxTextInputStream stream;
+	/// Accumulated warning messages
+	String warnings;
 	
 	// --------------------------------------------------- : Reading the stream