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comparison orange/util/Reflection.d @ 7:32152d5fad4b

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nameOfFieldAt fails poorly if position >= tuple.length
author Jacob Carlborg <doob@me.com>
date Fri, 25 Jun 2010 23:07:49 +0200
parents 11a31bd929f9
children 99c52d46822a
comparison
equal deleted inserted replaced
6:ae24aae69a3b 7:32152d5fad4b
256 else 256 else
257 alias TypeOfFieldImpl!(T, field, i + 1) TypeOfFieldImpl; 257 alias TypeOfFieldImpl!(T, field, i + 1) TypeOfFieldImpl;
258 } 258 }
259 259
260 /** 260 /**
261 * Evaluates to a string containing the name of the field at given position in the type given type. 261 * Evaluates to a string containing the name of the field at given position in the given type.
262 * 262 *
263 * Params: 263 * Params:
264 * T = the type of the class/struct 264 * T = the type of the class/struct
265 * position = the position of the field in the tupleof array 265 * position = the position of the field in the tupleof array
266 */ 266 */
267 template nameOfFieldAt (T, size_t position) 267 template nameOfFieldAt (T, size_t position)
268 { 268 {
269 static assert (position < T.tupleof.length, format!(`The given position "`, position, `" is greater than the number of fields (`, T.tupleof.length, `) in the type "`, T, `"`));
270
269 static if (T.tupleof[position].stringof.length > T.stringof.length + 3) 271 static if (T.tupleof[position].stringof.length > T.stringof.length + 3)
270 const nameOfFieldAt = T.tupleof[position].stringof[1 + T.stringof.length + 2 .. $]; 272 const nameOfFieldAt = T.tupleof[position].stringof[1 + T.stringof.length + 2 .. $];
271 273
272 else 274 else
273 const nameOfFieldAt = ""; 275 const nameOfFieldAt = "";