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135 commits

Author SHA1 Message Date
Eelco Dolstra
f16fe2af8d * builtins.toXML: propagate the string context. This is a regression 
from the old ATerm-based evaluator.
 2010-06-10 10:29:50 +00:00
Eelco Dolstra
1ab67cf437 2010-06-02 09:43:04 +00:00
Eelco Dolstra
93cd5a4a13 * The << operator on values should be const. 2010-05-18 10:36:37 +00:00
Eelco Dolstra
b2235d81d1 * Restore the __overrides feature that was lost somewhere in the 
fast-eval branch.
 2010-05-15 08:10:12 +00:00
Eelco Dolstra
bd25ac2260 * Print attributes in sorted order. 2010-05-12 12:15:49 +00:00
Eelco Dolstra
01e58adce0 * Store position info for inherited attributes. 2010-05-07 12:43:57 +00:00
Eelco Dolstra
e2d5e40f4f * Keep track of the source positions of attributes. 2010-05-07 12:11:05 +00:00
Eelco Dolstra
84ce7ac76f * Store attribute positions in the AST and report duplicate attribute 
errors with position info.
* For all positions, use the position of the first character of the
  first token, rather than the last character of the first token plus
  one.
 2010-05-06 16:46:48 +00:00
Eelco Dolstra
0bc468f195 * Simplify the implementation of `with'. This gives a 7% speedup in 
evaluating the NixOS system configuration.
 2010-04-22 15:08:09 +00:00
Eelco Dolstra
2d7636529f * String equality tests should take the context into account. All the 
evaluation test cases now succeed.
 2010-04-22 09:54:11 +00:00
Eelco Dolstra
0777448ca6 * Fixed builtins.genericClosure. 2010-04-21 15:57:11 +00:00
Eelco Dolstra
fe2d869e04 * Store user environment manifests as a Nix expression in 
$out/manifest.nix rather than as an ATerm.

  (Hm, I thought I committed this two days ago...)
 2010-04-21 15:08:58 +00:00
Eelco Dolstra
5c31995bb8 * Updated some more primops. 2010-04-16 15:13:47 +00:00
Eelco Dolstra
8ca4a001cb * Improve sharing a bit. 2010-04-16 14:03:26 +00:00
Eelco Dolstra
497e4ad126 * Remove some redundant tests. 2010-04-16 13:51:01 +00:00
Eelco Dolstra
02c1dac909 * In an nested with' where the inner with is a variable (with ...; 
with someVar; ...'), the contents of the variable would be
  clobbered.  (The attributes in the outer `with' were added to the
  variable.)
 2010-04-16 13:44:02 +00:00
Eelco Dolstra
04c4bd3624 * Store lists as lists of pointers to values rather than as lists of 
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.
 2010-04-15 00:37:36 +00:00
Eelco Dolstra
e41b5828db * Better stats. 2010-04-14 23:48:46 +00:00
Eelco Dolstra
d39d3c6264 * Implemented inherit. 2010-04-14 23:25:05 +00:00
Eelco Dolstra
267dc693d2 * Fix builtins. 2010-04-14 22:59:39 +00:00
Eelco Dolstra
81de12bc8f * Refactoring: move variable uses to a separate class. 2010-04-14 15:14:23 +00:00
Eelco Dolstra
110d155778 * Implemented withs. 2010-04-14 15:01:04 +00:00
Eelco Dolstra
9985230c00 * After parsing, compute level/displacement pairs for each variable 
use site, allowing environments to be stores as vectors of values
  rather than maps.  This should speed up evaluation and reduce the
  number of allocations.
 2010-04-14 14:42:32 +00:00
Eelco Dolstra
85d13c8f93 * Change the semantics of "with" so that inner "withs" take 
precedence, i.e. `with {x=1;}; with {x=2;}; x' evaluates to 2'.
  This has a simpler implementation and seems more natural.  There
  doesn't seem to be any code in Nixpkgs or NixOS that relies on the
  old behaviour.
 2010-04-14 08:37:08 +00:00
Eelco Dolstra
816f9c0f6f * Use std::tr1::unordered_set instead of std::set for the symbol 
table.  This gives a 10% speed increase on `nix-instantiate
  /etc/nixos/nixos -A system --readonly-mode'.
 2010-04-13 14:34:11 +00:00
Eelco Dolstra
7d47498b5e * Evaluate lets directly (i.e. without desugaring to `rec { attrs...; 
<let-body> = e; }.<let-body>).  This prevents the unnecessary
  allocation of an attribute set.
 2010-04-13 13:42:25 +00:00
Eelco Dolstra
ac1e8f40d4 * Use a symbol table to represent identifiers and attribute names 
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.
 2010-04-13 12:25:42 +00:00
Eelco Dolstra
10e8b1fd15 * Finished the ATerm-less parser. 2010-04-12 23:33:23 +00:00
Eelco Dolstra
d4f0b0fc6c * Indented strings. 2010-04-12 22:03:27 +00:00
Eelco Dolstra
a60317f20f * More missing constructs. 2010-04-12 21:21:24 +00:00
Eelco Dolstra
4d6ad5be17 * Don't use ATerms for the abstract syntax trees anymore. Not 
finished yet.
 2010-04-12 18:30:11 +00:00
Eelco Dolstra
db90b88e65 * Hack to support builderDefs expressions. 2010-04-12 09:50:20 +00:00
Eelco Dolstra
4e49002576 * Doh. 2010-04-12 09:45:00 +00:00
Eelco Dolstra
f3dc7ab877 * Keep more statistics about stack space usage. 
* Reduce stack space usage.
 2010-04-09 12:00:49 +00:00
Eelco Dolstra
b7b3dd55f9 * Remove a lot of dead code. 2010-04-08 11:41:19 +00:00
Eelco Dolstra
7e048eddf5 * Fix blackholing. If evaluation fails due to an assertion failure, 
then the blackhole has to be removed to ensure that repeated
  evaluation of the same value gives an assertion failure again rather
  than an "infinite recursion" error.
 2010-04-08 11:25:14 +00:00
Eelco Dolstra
af2a372bb0 * Update autoCallFunction() and findAlongAttrPath(). 2010-04-07 15:47:06 +00:00
Eelco Dolstra
fc92244ba8 * Implemented the primops necessary for generating the NixOS manual. 2010-04-07 13:55:46 +00:00
Eelco Dolstra
a353aef0b1 * In eval(), don't use the target value `v' as a temporary. 
Overwriting `v' breaks when the expression evaluation to an
  assertion failure or throw.
 2010-04-06 14:15:29 +00:00
Eelco Dolstra
c172274e17 * Quick hack to make coerceToString work more or less correctly on 
nested lists.  `nix-instantiate' can now evaluate the NixOS system
  derivation attribute correctly (in 2.1s on my laptop vs. 6.2s for
  the trunk).
 2010-04-01 14:35:03 +00:00
Eelco Dolstra
7b851915bf * Improve sharing. 2010-04-01 12:04:57 +00:00
Eelco Dolstra
95cc417d76 * Functions are incomparable. 2010-04-01 10:55:36 +00:00
Eelco Dolstra
71f026292b * Make `derivation' lazy again for performance. It also turns out 
that there are some places in Nixpkgs (php_configurable /
  composableDerivation, it seems) that call `derivation' with
  incorrect arguments (namely, the `name' attribute missing) but get
  away with it because of laziness.
 2010-04-01 09:55:57 +00:00
Eelco Dolstra
dc31305b38 * Fixed the trace primop and path comparison. 
* Removed exprToString and stringToExpr because there is no ATerm
  representation to work on anymore (and exposing the internals of the
  evaluator like this is not a good idea anyway).
 2010-03-31 20:09:20 +00:00
Eelco Dolstra
979f163615 * Handle string contexts. `nix-instantiate' can now correctly compute 
the `firefoxWrapper' attribute in Nixpkgs, and it's about 3 times
  faster than the trunk :-)
 2010-03-31 19:52:29 +00:00
Eelco Dolstra
55e207b2dc * Cache parse trees to prevent repeated parsing of imported Nix 
expressions.
 2010-03-31 16:14:32 +00:00
Eelco Dolstra
3d94be61ea * Implemented derivations. 2010-03-31 15:38:03 +00:00
Eelco Dolstra
13c2adc897 * Implemented `rec { inherit ...; }'. 2010-03-31 11:05:39 +00:00
Eelco Dolstra
4c53ca2692 * Compare nulls. 2010-03-31 09:54:12 +00:00
Eelco Dolstra
7f19e03c65 * More primops. 2010-03-30 22:39:48 +00:00