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* Derefencing of hashed expressions.

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This commit is contained in:
Eelco Dolstra 2003-06-17 15:45:43 +00:00
parent a7ab242fb4
commit 6656993f83
4 changed files with 45 additions and 28 deletions
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10
src/globals.hh
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@ -21,9 +21,13 @@ extern string dbRefs;
/* dbNFs :: Hash -> Hash
Each pair (h1, h2) in this mapping records the fact that the value
referenced by h2 is a normal form obtained by evaluating the value
referenced by value h1.
Each pair (h1, h2) in this mapping records the fact that the normal
form of an expression with hash h1 is Hash(h2).
TODO: maybe this should be that the normal form of an expression
with hash h1 is an expression with hash h2; this would be more
general, but would require us to store lots of small expressions in
the file system just to support the caching mechanism.
*/
extern string dbNFs;