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authordos-reis <gdr@axiomatics.org>2007-09-20 14:50:49 +0000
committerdos-reis <gdr@axiomatics.org>2007-09-20 14:50:49 +0000
commit0850ca5458cb09b2d04cec162558500e9a05cf4a (patch)
treeaa76b50f08c662dab9a49b6ee9f0dc7318139ea1 /src/interp/hashcode.boot
parent6f8caa148526efc14239febdc12f91165389a8ea (diff)
downloadopen-axiom-0850ca5458cb09b2d04cec162558500e9a05cf4a.tar.gz
Revert commits to the wrong tree.
Diffstat (limited to 'src/interp/hashcode.boot')
-rw-r--r--src/interp/hashcode.boot109
1 files changed, 0 insertions, 109 deletions
diff --git a/src/interp/hashcode.boot b/src/interp/hashcode.boot
deleted file mode 100644
index 53a42d04..00000000
--- a/src/interp/hashcode.boot
+++ /dev/null
@@ -1,109 +0,0 @@
--- Copyright (c) 1991-2002, The Numerical ALgorithms Group Ltd.
--- All rights reserved.
---
--- Redistribution and use in source and binary forms, with or without
--- modification, are permitted provided that the following conditions are
--- met:
---
--- - Redistributions of source code must retain the above copyright
--- notice, this list of conditions and the following disclaimer.
---
--- - Redistributions in binary form must reproduce the above copyright
--- notice, this list of conditions and the following disclaimer in
--- the documentation and/or other materials provided with the
--- distribution.
---
--- - Neither the name of The Numerical ALgorithms Group Ltd. nor the
--- names of its contributors may be used to endorse or promote products
--- derived from this software without specific prior written permission.
---
--- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
--- IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
--- TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
--- PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
--- OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
--- EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
--- PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
--- PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
--- LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
--- NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
--- SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-
-)package "BOOT"
-
--- Type hasher for old compiler style type names which produces a hash code
--- compatible with the asharp compiler. Takes a hard error if the type
--- is parameterized, but has no constructor modemap.
-getDomainHash dom == SPADCALL(CDR dom, (CAR dom).4)
-
-hashType(type, percentHash) ==
- SYMBOLP type =>
- type = '$ => percentHash
- type = "%" => percentHash
- hashString SYMBOL_-NAME type
- STRINGP type => hashCombine(hashString type,
- hashString('"Enumeration"))
- type is ['QUOTE, val] => hashType(val, percentHash)
- type is [dom] => hashString SYMBOL_-NAME dom
- type is ['_:, ., type2] => hashType(type2, percentHash)
- isDomain type => getDomainHash type
- [op, :args] := type
- hash := hashString SYMBOL_-NAME op
- op = 'Mapping =>
- hash := hashString '"->"
- [retType, :mapArgs] := args
- for arg in mapArgs repeat
- hash := hashCombine(hashType(arg, percentHash), hash)
- retCode := hashType(retType, percentHash)
- EQL(retCode, $VoidHash) => hash
- hashCombine(retCode, hash)
- op = 'Enumeration =>
- for arg in args repeat
- hash := hashCombine(hashString(STRING arg), hash)
- hash
- op in $DomainsWithoutLisplibs =>
- for arg in args repeat
- hash := hashCombine(hashType(arg, percentHash), hash)
- hash
-
- cmm := CDDAR getConstructorModemap(op)
- cosig := CDR GETDATABASE(op, 'COSIG)
- for arg in args for c in cosig for ct in cmm repeat
- if c then
- hash := hashCombine(hashType(arg, percentHash), hash)
- else
- hash := hashCombine(7, hash)
--- !!! If/when asharp hashes values using their type, use instead
--- ctt := EQSUBSTLIST(args, $FormalMapVariableList, ct)
--- hash := hashCombine(hashType(ctt, percentHash), hash)
-
-
- hash
-
---The following are in cfuns.lisp
-$hashModulus := 1073741789 -- largest 30-bit prime
-
--- Produce a 30-bit hash code. This function must produce the same codes
--- as the asharp string hasher in src/strops.c
-hashString str ==
- h := 0
- for i in 0..#str-1 repeat
- j := CHAR_-CODE char str.i
- h := LOGXOR(h, ASH(h, 8))
- h := h + j + 200041
- h := LOGAND(h, 1073741823) -- 0x3FFFFFFF
- REM(h, $hashModulus)
-
--- Combine two hash codes to make a new one. Must be the same as in
--- the hashCombine function in aslib/runtime.as in asharp.
-hashCombine(hash1, hash2) ==
- MOD(ASH(LOGAND(hash2, 16777215), 6) + hash1, $hashModulus)
-
-
-$VoidHash := hashString '"Void"
-
-
--- following two lines correct bad coSig properties due to SubsetCategory
---putConstructorProperty('LocalAlgebra,'coSig,'(NIL T T T))
---putConstructorProperty('Localize,'coSig,'(NIL T T T))