Added some more classes for ScriptErrors;

Added split_text function, which is the 'opposite' of break_text;
Script code "f\n(stuff)" now parses as "f;stuff" instead of a function call, "f(stuff)";
Fixed bug in cursor movement, which caused the closing > of a tag at end of input to be overwritten.

git-svn-id: svn://svn.code.sf.net/p/magicseteditor/code/trunk@1175 0fc631ac-6414-0410-93d0-97cfa31319b6

src/util/error.hpp

@@ -108,6 +108,28 @@ class ScriptError : public Error {
 	inline ScriptError(const String& str) : Error(str) {}
 };
 
+/// "Variable not set"
+class ScriptErrorNoVariable : public ScriptError {
+  public:
+	inline ScriptErrorNoVariable(const String& var) : ScriptError(_("Variable not set: ") + var) {}
+};
+
+/// "Can't convert from A to B"
+class ScriptErrorConversion : public ScriptError {
+  public:
+	inline ScriptErrorConversion(const String& a, const String& b)
+		: ScriptError(_ERROR_2_("can't convert", a, b)) {}
+	inline ScriptErrorConversion(const String& value, const String& a, const String& b)
+		: ScriptError(_ERROR_3_("can't convert value", value, a, b)) {}
+};
+
+/// "A has no member B"
+class ScriptErrorNoMember : public ScriptError {
+  public:
+	inline ScriptErrorNoMember(const String& type, const String& member)
+		: ScriptError(_ERROR_2_("has no member", type, member)) {}
+};
+
 // ----------------------------------------------------------------------------- : Error handling
 
 /// Should errors be written to stdout?

src/util/tagged_string.cpp

@@ -307,9 +307,12 @@ void cursor_to_index_range(const String& str, size_t cursor, size_t& start, size
 			if (cur == cursor) start = i;
 		}
 	}
-	end = min(i, size);
-	if (cur < cursor) start = end = size;
-	if (end <= start) end = start + 1;
+	if (cur < cursor) {
+		start = end = size;
+	} else {
+		end = min(i, size);
+	}
+	end = max(end, start + 1); // always start < end, since there are always valid cursor positions
 }
 
 size_t cursor_to_index(const String& str, size_t cursor, Movement dir) {