Changeset 4001

Timestamp:

10/10/08 22:06:13 (1 month ago)

Author:

kris

Message:

added a [tentative] DataInput?.get() wrapper for allocating array memory

Files:

trunk/tango/io/stream/DataStream.d

r3856	r4001
96	96	/***********************************************************************
97	97
	98	Read an array back from the source, with the assumption
	99	it has been written using DataOutput.put() or otherwise
	100	prefixed with an integer representing the total number
	101	of bytes within the array content. That's bytes, not
	102	elements.
	103
	104	An array of the appropriate size is allocated either via
	105	the provided delegate, or from the heap, populated and
	106	returned to the caller. Casting the return value to an
	107	appropriate type will adjust the number of elements as
	108	required:
	109	---
	110	auto text = cast(char[]) input.get;
	111	---
	112
	113
	114	***********************************************************************/
	115
	116	final void[] get (void[] delegate(uint bytes) dg = null)
	117	{
	118	auto len = getInt;
	119	auto dst = (dg ? dg(len) : new void[len]);
	120	input.readExact (dst.ptr, len);
	121	return dst;
	122	}
	123
	124	/***********************************************************************
	125
98	126	***********************************************************************/
99	127
…	…
356	384
357	385	auto input = new DataInput (buf);
358		assert (input.get~~(new char[9])~~ is 9);
	386	assert (input.get.length is 9);
359	387	assert (input.getInt is 1024);
360		~~input.getInt;~~
361	388	}
362	389	}