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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 816dd3f061 * Remove more obsolete code. 2010-04-14 12:49:05 +00:00
Eelco Dolstra 011b5da0f4 * Get nix-env to compile again. 2010-04-14 09:39:06 +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 0d272fca79 * Remove some obsolete functions. 2010-04-12 23:31:47 +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 ed711f73bc * Don't use ATerms to represent integers in the lexer. 2010-04-12 10:38:18 +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 c3f228f296 2010-04-12 09:14:27 +00:00
Ludovic Courtès aac5fcfbb5 Re-add drvPath' and outPath' attributes to <derivation> XML nodes. 
This fixes a regression introduced in r20882 ("Add source location
information to the XML output.").

* src/libexpr/expr-to-xml.cc (nix::printTermAsXML): Dereference the
  attribute RHS from "drvPath" and "outPath".
 2010-04-09 21:30:55 +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 9a64454faa * expr-to-xml -> value-to-xml. 2010-04-07 13:59:45 +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 a5ece7d016 * Removed the `~' operator. 2010-04-01 16:59:07 +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 d8cd3115d8 * Get nix-env to compile. 2010-03-31 19:12:08 +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 5187678913 2010-03-31 15:14:23 +00:00
Eelco Dolstra f061086a93 * Fix the broken test for listToAttrs. 2010-03-31 13:35:29 +00:00
Ludovic Courtès 09381cccff Make source location info in the XML output optional. 
* src/libexpr/expr-to-xml.cc (nix::showAttrs): Add `location'
  parameter.  Provide location XML attributes when it's true.  Update
  callers.
  (nix::printTermAsXML): Likewise.

* src/libexpr/expr-to-xml.hh (nix::printTermAsXML): Update prototype;
  have `location' default to `false'.

* src/nix-instantiate/nix-instantiate.cc (printResult, processExpr): Add
  `location' parameter; update callers.
  (run): Add support for `--no-location'.

* src/nix-instantiate/help.txt: Update accordingly.

* tests/lang.sh: Invoke `nix-instantiate' with `--no-location' for the
  XML tests.

* tests/lang/eval-okay-toxml.exp, tests/lang/eval-okay-to-xml.nix: New
  files.
 2010-03-31 12:38:31 +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
Ludovic Courtès 471419d1fa Add source location information to the XML output. 
* src/libexpr/expr-to-xml.cc (nix::showAttrs): Dereference the attribute
  RHS.  Add "path", "line", and "column" XML attributes to the node when
  source location information is available.
  (nix::printTermAsXML): Likewise for functions.
 2010-03-31 08:29:05 +00:00
Ludovic Courtès eb07a4f1ee Escape `>' signs in the XML output. 
* src/libutil/xml-writer.cc (nix::XMLWriter::writeAttrs): Escape `>'.
 2010-03-31 08:29:01 +00:00
Eelco Dolstra 7f19e03c65 * More primops. 2010-03-30 22:39:48 +00:00
Eelco Dolstra 47df476daa * More operators / primops. 2010-03-30 18:05:54 +00:00