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2010-04-13 * Use a symbol table to represent identifiers and attribute namesEelco Dolstra1-2/+2
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. NotEelco Dolstra1-3/+2
finished yet.
2010-03-23 * Start of an evaluator that uses call-by-need (with thunk updating)Eelco Dolstra1-1/+1
instead of (memoised) call-by-name.
2006-09-04 * Use a proper namespace.Eelco Dolstra1-0/+6
* Optimise header file usage a bit. * Compile the parser as C++.
2004-02-04 * Use a map to lookup primops.Eelco Dolstra1-3/+3
* Various performance improvements in the evaluator. * Do not link against unused (and missing!) libraries (-lsglr, etc.).
2003-11-22 * Maintain integrity of the substitute and successor mappings whenEelco Dolstra1-0/+6
deleting a path in the store. * Allow absolute paths in Nix expressions. * Get nix-prefetch-url to work again. * Various other fixes.
2003-11-19 * Refactoring: put the Nix expression evaluator in its own library soEelco Dolstra1-0/+10
that it can be used by multiple programs.