/vqdr/trunk : contents of src/libvqdr/function/function

: (revision 56)

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1 by Gustav Hartvigsson * Initial code - far from done	1	using Gee;
	2
	3	using VQDR.Expression;
36 by Gustav Hartvigsson Refactoring.	4	using Utils;
1 by Gustav Hartvigsson * Initial code - far from done	5
	6	namespace VQDR.Expression {
	7	public abstract class FunctionToken : Token {
	8	protected FunctionToken () {
	9	base (0);
	10	}
	11
26 by Gustav Hartvigsson * Fixed the "allowed function token type" map...	12	private struct Entry {
	13	public string key;
	14	public Type? val;
	15	}
	16
	17
1 by Gustav Hartvigsson * Initial code - far from done	18	// We only store the type, as that is what is important.
	19	private static Gee.HashMap<string, Type?> _allowed_functions;
	20
52.1.2 by Gustav Hartvigsson no more 's	21	protected const int64 UNDEFINED = int64.MIN + 1; //+1 so that I can still use int64.MIN_VALUE.
1 by Gustav Hartvigsson * Initial code - far from done	22	/** Right arrow */
	23	protected const string CH_RARR = "\u2192";
	24	/** Left arrow */
	25	protected const string CH_LARR = "\u2190";
	26	/** Round up open bracket */
	27	protected const string CH_RUP_OP = "\u2308";
	28	/** Round up closed bracket */
	29	protected const string CH_RUP_CL = "\u2309";
	30	/** Round down open bracket */
	31	protected const string CH_RDN_OP = "\u230a";
	32	/** Round down closed bracket */
	33	protected const string CH_RDN_CL = "\u230b";
	34	/** Absolute open bracket */
	35	protected const string CH_ABS_OP = "\|";
	36	/** Absolute closed bracket */
	37	protected const string CH_ABS_CL = "\|";
	38	/** Greater than */
	39	protected const string CH_GT = ">";
	40	/** Lower than */
	41	protected const string CH_LT = "<";
	42	/** Equal */
	43	protected const string CH_EQUAL = "=";
	44
	45	/** Begin of a complex result */
	46	protected const string SYM_BEGIN = "[";
	47	/** End of a complex result */
	48	protected const string SYM_END = "]";
	49	/** Begin of a complex result, alternative */
	50	protected const string SYM_BEGIN_ALT = "{";
	51	/** End of a complex result, alternative */
	52	protected const string SYM_END_ALT = "}";
	53	/** Separator for different roll result */
	54	protected const string SYM_SEP = ",";
	55	/** Separator for different value of same roll */
	56	protected const string SYM_SEP_SAME = ":";
	57	/** Separator for overall (fumble, critical, botch, glitch) */
	58	protected const string SYM_SEP_ = "\u2261"; //"=" (with 3 lines)
	59	/** Denotes a success */
	60	protected const string SYM_SUCCESS = "!";
	61	/** Denotes a failure */
	62	protected const string SYM_FAILURE = "*";
	63	/** Denotes an extra result */
	64	protected const string SYM_EXTRA = "!";
	65	/** Denotes a selected result */
	66	protected const string SYM_SELECTED = "!";
	67	/** Separator for exploding rolls */
	68	protected const string SYM_EXPLODE = "\u00bb"; //">>"
	69
	70	/** Truncated output: ellipsis */
	71	protected const string SYM_TRUNK_PART_ELLIPSIS = "\u2026"; //"..."
	72	/** Truncated output: equal */
	73	protected const string SYM_TRUNK_PART_EQUAL = CH_EQUAL; //"="
	74	/** Truncated output: begin */
	75	protected const string SYM_TRUNK_BEGIN = SYM_BEGIN + SYM_TRUNK_PART_ELLIPSIS + SYM_TRUNK_PART_EQUAL; //"[...="
	76	/** Truncated output: end */
	77	protected const string SYM_TRUNK_END = SYM_END; //"]"
	78
	79	construct {
14 by Gustav Hartvigsson * Use enum instead of static values for the priority of operations.	80	this.priority = Prio.FUNCTION;
1 by Gustav Hartvigsson * Initial code - far from done	81	}
1 by Gustav Hartvigsson * Initial code - far from done	82
26 by Gustav Hartvigsson * Fixed the "allowed function token type" map...	83
1 by Gustav Hartvigsson * Initial code - far from done	84	/**
	85	* Ititialise the right functon token by it's name.
	86	*
	87	* @param token Token of the Function.
	88	* @param position Token position.
	89	* @return An instance representing the function, or @c null if not found.
	90	*/
52.1.3 by Gustav Hartvigsson int -> int32	91	public static FunctionToken? init_token (string token, int32 position) {
26 by Gustav Hartvigsson * Fixed the "allowed function token type" map...	92
	93	if (_allowed_functions == null) {
	94	// Intialise the HashMap if it is not created.
	95	_allowed_functions = new Gee.HashMap<string, Type?> ();
	96
	97	Entry[] entries = {
	98	{"round_up", typeof (RoundUpFunctionToken)},
	99	{"round_down", typeof (RoundDownFunctionToken)},
35 by Gustav Hartvigsson a few things: FastNumbers, simplifications and AbstractPoolToken.	100	{"roll_and_keep", typeof (RollAndKeepFunctionToken)},
26 by Gustav Hartvigsson * Fixed the "allowed function token type" map...	101	{null, null}
	102	};
	103
	104	foreach (Entry e in entries) {
	105	_allowed_functions.@set (e.key, e.val);
	106	}
	107
	108	}
	109
1 by Gustav Hartvigsson * Initial code - far from done	110	// We get the token type.
	111	Type? t = _allowed_functions.@get (token.down ());
	112
	113	if (t != null) {
	114	// Construct a new instance of the token.
45 by Gustav Hartvigsson * woopes.	115	return (FunctionToken) GLib.Object.@new (t, null, null);
1 by Gustav Hartvigsson * Initial code - far from done	116	}
45 by Gustav Hartvigsson * woopes.	117	return null;
1 by Gustav Hartvigsson * Initial code - far from done	118	}
	119
	120	/**
	121	* Add a FunctionToken Type to the list of allowed functions.
	122	*
	123	* Note: The Type must be derived from FunctionToken, as there is an
	124	* assert that chkecks.
	125	*/
	126	public static void add_function (string token, Type t) {
	127	assert (t.is_a (typeof (FunctionToken)) == true);
	128	_allowed_functions.@set (token, t);
	129	}
	130
	131	public static string get_function_name (Type t) {
	132	assert (t.is_a (typeof (FunctionToken)) == true);
	133	string ret_val = null;
	134
	135	_allowed_functions.map_iterator ().@foreach ((k,v) => {
	136	if (v == t) {
	137	ret_val = k;
	138	return false;
	139	}
	140	return true;
	141	});
	142
	143	return ret_val;
	144	}
	145
12.1.1 by Gustav Hartvigsson * Switch to using FastNumber instead of something else.	146	protected FastNumber get_optional_child_raw_result (Context instance,
52.1.3 by Gustav Hartvigsson int -> int32	147	int32 index,
52.1.2 by Gustav Hartvigsson no more 's	148	int64 default_result)
1 by Gustav Hartvigsson * Initial code - far from done	149	throws GLib.Error {
	150	Token? tmp_roll = get_child (index);
	151
	152	if (tmp_roll != null) {
	153	tmp_roll.evaluate (instance);
	154	return tmp_roll.result_value;
	155	} else {
12.1.2 by Gustav Hartvigsson * Fastnumber is now a struct,	156	return FastNumber.raw (default_result);
1 by Gustav Hartvigsson * Initial code - far from done	157	}
26 by Gustav Hartvigsson * Fixed the "allowed function token type" map...	158
1 by Gustav Hartvigsson * Initial code - far from done	159	}
	160	}
	161	}