* Interface to parser context. */
/*
- * GiNaC Copyright (C) 1999-2010 Johannes Gutenberg University Mainz, Germany
+ * GiNaC Copyright (C) 1999-2015 Johannes Gutenberg University Mainz, Germany
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* number of arguments.
* 3. User can extend the parser via custom prototype tables. It's possible
* to read user defined classes, create abbreviations, etc.
+ *
+ * NOTE: due to a hack that allows user defined functions to be parsed, the map
+ * value of type reader_func is internally treated as an unsigned and not as a
+ * function pointer!! The unsigned has to correspond to the serial number of
+ * the defined GiNaC function.
*/
-typedef std::map<prototype, reader_func> prototype_table;
+class PrototypeLess
+{
+public:
+ bool operator()(const prototype& p1, const prototype& p2) const
+ {
+ int s = p1.first.compare(p2.first);
+ if (s == 0) {
+ if ((p1.second == 0) || (p2.second == 0)) return false;
+ return p1.second < p2.second;
+ }
+ return s < 0;
+ }
+};
+typedef std::map<prototype, reader_func, PrototypeLess> prototype_table;
/**
* Default prototype table.
*
- * It supports most of builtin GiNaC functions.
+ * It supports all defined GiNaC functions and "pow", "sqrt", and "power".
*/
extern const prototype_table& get_default_reader();
+/**
+ * Builtin prototype table.
+ *
+ * It supports only the builtin GiNaC functions and "pow", "sqrt", and "power".
+ */
+extern const prototype_table& get_builtin_reader();
} // namespace GiNaC