lix -

Age	Commit message (Collapse)	Author
2019-10-09	OCD performance fix: {find,count}+insert => insert	Eelco Dolstra

2016-01-05	First hit at providing support for floats in the language.	Christian Theune

2015-07-23	Optimize small lists	Eelco Dolstra
	The value pointers of lists with 1 or 2 elements are now stored in the list value itself. In particular, this makes the "concatMap (x: if cond then [(f x)] else [])" idiom cheaper.
2015-07-17	OCD: foreach -> C++11 ranged for	Eelco Dolstra

2014-12-02	Make all ExternalValueBase functions const	Shea Levy

2014-12-02	Allow external code using libnixexpr to add types	Shea Levy
	Code that links to libnixexpr (e.g. plugins loaded with importNative, or nix-exec) may want to provide custom value types and operations on values of those types. For example, nix-exec is currently using sets where a custom IO value type would be more appropriate. This commit provides a generic hook for such types in the form of tExternal and the ExternalBase virtual class, which contains all functions necessary for libnixexpr's type-polymorphic functions (e.g. `showType`) to be implemented.
2012-03-05	Fix compilation on FreeBSD	Eelco Dolstra
	http://hydra.nixos.org/build/2213576 Not sure why compilation doesn't fail on other platforms...
2010-10-24	* Keep attribute sets in sorted order to speed up attribute lookups.	Eelco Dolstra
	* Simplify the representation of attributes in the AST. * Change the behaviour of listToAttrs() in case of duplicate names.
2010-10-24	* Store attribute sets as a vector instead of a map (i.e. a red-black	Eelco Dolstra
	tree). This saves a lot of memory. The vector should be sorted so that names can be looked up using binary search, but this is not the case yet. (Surprisingly, looking up attributes using linear search doesn't have a big impact on performance.) Memory consumption for $ nix-instantiate /etc/nixos/nixos/tests -A bittorrent.test --readonly-mode on x86_64-linux with GC enabled is now 185 MiB (compared to 946 MiB on the trunk).
2010-10-22	* Store Value nodes outside of attribute sets. I.e., Attr now stores	Eelco Dolstra
	a pointer to a Value, rather than the Value directly. This improves the effectiveness of garbage collection a lot: if the Value is stored inside the set directly, then any live pointer to the Value causes all other attributes in the set to be live as well.
2010-06-10	* builtins.toXML: propagate the string context. This is a regression	Eelco Dolstra
	from the old ATerm-based evaluator.
2010-05-07	(no commit message)	Eelco Dolstra

2010-05-07	* Sync with the trunk.	Eelco Dolstra

2010-05-07	* Keep track of the source positions of attributes.	Eelco Dolstra

2010-04-15	* Store lists as lists of pointers to values rather than as lists of	Eelco Dolstra
	values. This improves sharing and gives another speed up. Evaluation of the NixOS system attribute is now almost 7 times faster than the old evaluator.
2010-04-13	* Use a symbol table to represent identifiers and attribute names	Eelco Dolstra
	efficiently. The symbol table ensures that there is only one copy of each symbol, thus allowing symbols to be compared efficiently using a pointer equality test.
2010-04-12	* Don't use ATerms for the abstract syntax trees anymore. Not	Eelco Dolstra
	finished yet.
2010-04-07	* expr-to-xml -> value-to-xml.	Eelco Dolstra