author | paulson |
Wed, 27 Jun 2007 12:41:36 +0200 | |
changeset 23510 | 4521fead5609 |
parent 23442 | 028e39e5e8f3 |
child 39353 | 7f11d833d65b |
permissions | -rw-r--r-- |
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(* ========================================================================= *) |
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(* A STORE FOR UNIT THEOREMS *) |
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(* Copyright (c) 2001-2006 Joe Hurd, distributed under the BSD License *) |
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(* ========================================================================= *) |
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signature Units = |
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sig |
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(* ------------------------------------------------------------------------- *) |
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(* A type of unit store. *) |
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(* ------------------------------------------------------------------------- *) |
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type unitThm = Literal.literal * Thm.thm |
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type units |
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(* ------------------------------------------------------------------------- *) |
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(* Basic operations. *) |
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(* ------------------------------------------------------------------------- *) |
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val empty : units |
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val size : units -> int |
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val toString : units -> string |
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val pp : units Parser.pp |
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(* ------------------------------------------------------------------------- *) |
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(* Add units into the store. *) |
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(* ------------------------------------------------------------------------- *) |
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val add : units -> unitThm -> units |
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val addList : units -> unitThm list -> units |
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(* ------------------------------------------------------------------------- *) |
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(* Matching. *) |
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(* ------------------------------------------------------------------------- *) |
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val match : units -> Literal.literal -> (unitThm * Subst.subst) option |
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(* ------------------------------------------------------------------------- *) |
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(* Reducing by repeated matching and resolution. *) |
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(* ------------------------------------------------------------------------- *) |
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val reduce : units -> Rule.rule |
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end |