remove pamphlets - part 7

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-\documentclass{article}
-\usepackage{axiom}
-\begin{document}
-\title{\$SPAD/src/interp word.boot}
-\author{The Axiom Team}
-\maketitle
-\begin{abstract}
-\end{abstract}
-\eject
-\tableofcontents
-\eject
-\section{License}
-<<license>>=
--- 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.
-
-@
-<<*>>=
-<<license>>
-
---=======================================================================
---                        Build Directories
---=======================================================================
-buildFunctionTable(dicts) ==
-  sayKeyedMsg("S2GL0011",NIL)
-  buildWordTable getListOfFunctionNames dicts
- 
-buildWordTable u ==
-  table:= MAKE_-HASHTABLE 'ID
-  for s in u repeat
-    key := UPCASE s.0
-    HPUT(table,key,[[s,:wordsOfString s],:HGET(table,key)])
-  for key in HKEYS table repeat
-    HPUT(table,key,
-      listSort(function GLESSEQP,removeDupOrderedAlist
-        listSort(function GLESSEQP, HGET(table,key),function CAR),
-          function CADR))
-  table
- 
-writeFunctionTables(filemode) ==
-  $functionTable := NIL
-  writeFunctionTable(filemode,'SPADU,'(SPAD))
-  $functionTable := NIL
-  writeFunctionTable(filemode,'SPADD,'(SPADSYS))
-  $functionTable := NIL
-  writeFunctionTable(filemode,'SPADC,'(SPADSYS SCRATCHPAD_-COMPILER))
-  $functionTable := NIL
-  'done
- 
-writeFunctionTable(filemode,name,dicts) ==
-  _$ERASE makePathname(name,'DATABASE,filemode)
-  stream:= writeLib1(name,'DATABASE,filemode)
-  if not $functionTable then
-    $functionTable:= buildFunctionTable dicts
-  for key in HKEYS $functionTable repeat
-    rwrite(object2Identifier key,HGET($functionTable,key),stream)
-  RSHUT stream
-  'done
- 
-readFunctionTable() ==
-  sayKeyedMsg("S2GL0011",NIL)
-  name :=
-    $wordDictionary = 'user => 'SPADU
-    $wordDictionary = 'development => 'SPADD
-    'SPADC
-  stream:= readLib(name,'DATABASE)
-  table:= MAKE_-HASHTABLE 'ID
-  for key in RKEYIDS makePathname(name,'DATABASE,"*") repeat
-    HPUT(table,kk:=object2Identifier key, rread(kk,stream,nil))
-  RSHUT stream
-  table
- 
-removeDupOrderedAlist u ==
-  -- removes duplicate entries in ordered alist
-  -- (where duplicates are adjacent)
-  for x in tails u repeat
-    (y := rest x) and first first x = first first y => RPLACD(x,rest y)
-  u
- 
-getListOfFunctionNames(fnames) ==
-  -- fnames is a list of directories
-  res := nil
-  for fn in fnames repeat
-    null IOSTATE(fn,'DIRECT,'_*) => 'iterate
-    stream:= DEFIOSTREAM(['(MODE . INPUT),['FILE,fn,'DIRECT,'_*]],80,0)
-    while (not PLACEP (x:= READ_-LINE stream)) repeat
-      (s := SIZE x) < 26 => 'iterate
-      res:= [SUBSTRING(x,26,NIL),:res]
-    SHUT stream
-  res
- 
-wordsOfString(s) == [UPCASE x for x in wordsOfStringKeepCase s]
- 
-wordsOfStringKeepCase s == wordsOfString1(s,0) or [COPY s]
- 
-wordsOfString1(s,j) ==
-  k := or/[i for i in j..SUB1(MAXINDEX(s)) | isBreakCharacter s.i] =>
-    tailWords:=
-      isBreakCharacter s.(k+1) =>
-        n:= or/[i for i in (k+2)..SUB1(MAXINDEX(s))|not isBreakCharacter s.i]
-        null n => [SUBSTRING(s,k,nil)]
-        n > k+1 => [SUBSTRING(s,k,n-k-1),:wordsOfString1(s,n-1)]
-      m := or/[i for i in (k+2)..SUB1(MAXINDEX(s)) | isBreakCharacter s.i] =>
-        [SUBSTRING(s,k,m-k),:wordsOfString1(s,m)]
-      [SUBSTRING(s,k,nil)]
-    k > j+1 => [SUBSTRING(s,j,k-j),:tailWords]
-    tailWords
-  nil
- 
-isBreakCharacter x == null SMALL__LITER x
- 
--- SETANDFILEQ($functionTable,buildFunctionTable())
- 
---=======================================================================
---               Augment Function Directories
---=======================================================================
-add2WordFunctionTable fn ==
---called from DEF
-  $functionTable and
-    null LASSOC(s := PNAME fn,HGET($functionTable,(key := UPCASE s.0))) =>
-      HPUT($functionTable,key,[[s,:wordsOfString s],:HGET($functionTable,key)])
- 
---=======================================================================
---                       Guess Function Name
---=======================================================================
-guess word ==
-  u := bootFind word => INTERN u
-  nil
- 
-bootFind word ==
-  not $useWordFacility => NIL
-  list:= bootSearch word
-  PNAME word in list => nil --mismatch of directories: pretend it was not found
-  null list => centerAndHighlight('"no match found",80,'" ")
-  1 = #list => doYouWant? first list
-  pickANumber(word,list)
- 
-doYouWant? nam ==
-  center80 ['"Do you mean",:bright nam,'"?"]
-  center80 ['"If so, type",:bright 'y,"or",:bright 'yes]
-  center80 ['"Anything else means",:bright 'no]
-  x := UPCASE queryUser nil
-  MEMQ(STRING2ID_-N(x,1),'(Y YES)) => nam
-  nil
- 
-pickANumber(word,list) ==
-  clearScreen()
-  centerNoHighlight(['"You asked for",:bright word],80,'"-")
-  centerAndHighlight('"Do you mean one of the following?",80,'" ")
-  n:= #list
-  xx:= (n > 99 => 3; n > 9 => 2; 1)
-  maxWidth:= 38 - 2*(1+xx)
-  [short,long] := say2Split(list,nil,nil,maxWidth)
-  extra:=
-    REMAINDER(length := # short,2) ^= 0 => 1
-    0
-  halfLength:= length/2
-  firstList:= TAKE(halfLength,short)
-  secondList:= TAKE(-halfLength,short)
-  secondStartIndex:= halfLength + extra
-  shortList:=
-    "append"/[[[:bright i,fillerSpaces(xx-WIDTH i,'" "),x],
-      [:bright(i+secondStartIndex),fillerSpaces(xx-WIDTH (i+halfLength),'" "),y]]
-        for i in 1.. for x in firstList for y in secondList]
-  say2PerLineThatFit shortList
-  i:= 1 + halfLength
-  if extra=1 then
-    sayBrightly [:bright i,fillerSpaces(xx-WIDTH i,'" "),list.(i-1)]
-  for x in long for i in (1+length).. repeat
-    sayBrightly [:bright i,fillerSpaces(xx-WIDTH i,'" "),x]
-  center80 ['"If so: type a number between",:bright 1,'"and",:bright n,"and ENTER"]
-  center80 ['"Anything else means",:bright 'no]
-  y := queryUser nil
-  x:= string2Integer y
-  FIXP x and x >= 1 and x <= #list => list.(x-1)
-  nil
- 
-bootSearch word ==
---if not $functionTable then $functionTable:= buildFunctionTable()
-  if not $functionTable then $functionTable:= readFunctionTable()
-  key := PNAME word
-  list :=
-    hasWildCard? key =>
-      pattern := patternTran key -- converts * to &
-      pattern.0 ^= '_& =>
-        [x for [x,:.] in HGET($functionTable,UPCASE pattern.0)|
-          match?(pattern,COPY x)]
-      "append"/[[x for [x,:.] in HGET($functionTable,k)| match?(pattern,COPY x)]
-                  for k in HKEYS $functionTable]
-    findApproximateWords(PNAME word,$functionTable)
-  list
- 
-findApproximateWords(word,table) ==
-  words:= wordsOfString word
-  upperWord:= UPCASE COPY word
-  n := #words
-  threshold:=
-    n = 1 => 3
-    4
-  alist:= HGET(table,UPCASE word.0)
- 
-  --first try to break up as list of words
-  firstTry := [x for [x,:wordList] in alist | p] where p ==
-    n = #wordList =>
-      sum := 0
-      for entry in wordList for part in words while sum < threshold repeat
-        sum:= sum + deltaWordEntry(part,entry)
-      sum < threshold => true
-      n < 3 => false
-      sum := 0
-      badWord := false
-      for entry in wordList for part in words while sum < threshold repeat
-        k:= deltaWordEntry(part,entry)
-        k < 2 => sum:= sum + k
-        null badWord => badWord := true
-        sum := 1000
-      sum < threshold
-    n+1 = #wordList =>    --assume one word is missing
-      sum := 0
-      badWord := false
-      for entries in tails wordList for part in words
-           while sum < threshold repeat
-        entry := first entries
-        k:= deltaWordEntry(part,entry)
-        k < 2 => sum:= sum + k
-        null badWord =>
-          badWord := true
-          entries := rest entries      --skip this bad word
-          entry := first entries
-          k := deltaWordEntry(part,entry)
-          k < 2 => sum := sum + k
-          sum := 1000
-        sum := 1000
-      sum < threshold
-    n-1 = #wordList =>    --assume one word too many
-      sum := 0
-      badWord := false
-      for entry in wordList for parts in tails words
-           while sum < threshold repeat
-        part := first parts
-        k:= deltaWordEntry(part,entry)
-        k < 2 => sum:= sum + k
-        null badWord =>
-          badWord := true
-          parts := rest parts      --skip this bad word
-          part := first parts
-          k := deltaWordEntry(part,entry)
-          k < 2 => sum := sum + k
-          sum := 1000
-        sum := 1000
-      sum < threshold
-    false
-  firstTry => firstTry
- 
-  --no winners, so try flattening to upper case and checking again
- 
-  wordSize := SIZE word
-  lastThreshold := MAX(3,wordSize/2)
-  vec := GETREFV lastThreshold
-  for [x,:.] in alist repeat
-    k := deltaWordEntry(upperWord,UPCASE COPY x)
-    k < lastThreshold => vec.k := [x,:vec.k]
-  or/[vec.k for k in 0..MAXINDEX vec]
- 
-guessFromList(key,stringList) ==
-  threshold := MAX(3,(SIZE key)/2)
-  vec := GETREFV threshold
-  for x in stringList repeat
-    k := deltaWordEntry(key,x)
-    k < threshold => vec.k := [x,:vec.k]
-  or/[vec.k for k in 0..MAXINDEX vec]
- 
-deltaWordEntry(word,entry) ==
-  word = entry => 0
-  ABS(diff := SIZE word - SIZE entry) > 4 => 1000
-  canForgeWord(word,entry)
- 
---+ Note these are optimized definitions below-- see commented out versions
---+   to understand the algorithm
-canForgeWord(word,entry) ==
-  forge(word,0,MAXINDEX word,entry,0,MAXINDEX entry,0)
- 
-forge(word,w,W,entry,e,E,n) ==
-  w > W =>
-    e > E => n
-    QSADD1 QSPLUS(E-e,n)
-  e > E => QSADD1 QSPLUS(W-w,n)
-  word.w = entry.e => forge(word,w+1,W,entry,e+1,E,n)
-  w=W or e=E => forge(word,w+1,W,entry,e+1,E,QSADD1 n)
-  word.w=entry.(e+1) =>
-    word.(w+1) = entry.e => forge(word,w+2,W,entry,e+2,E,QSADD1 n)
-    forge(word,w+1,W,entry,e+2,E,QSADD1 n)
-  word.(w+1)=entry.e => forge(word,w+2,W,entry,e+1,E,QSADD1 n)
- 
-  (deltaW := W-w) > 1 and (deltaE := E-e) > 1 =>
-    --if word is long, can we delete chars to match 2 consective chars
-    deltaW >= deltaE and
-      (k := or/[j for j in (w+2)..(W-1) | word.j = entry.e])
-        and word.(k+1) = entry.(e+1) =>
-          forge(word,k+2,W,entry,e+2,E,QSPLUS(k-w,n))
-    deltaW <= deltaE and
-    --if word is short, can we insert chars so as to match 2 consecutive chars
-      (k := or/[j for j in (e+2)..(E-1) | word.w = entry.j])
-        and word.(w+1) = entry.(k+1) =>
-          forge(word,w+2,W,entry,k+2,E,QSPLUS(n,k-e))
-    forge(word,w+1,W,entry,e+1,E,QSADD1 n)
-  --check for two consecutive matches down the line
-  forge(word,w+1,W,entry,e+1,E,QSADD1 n)
- 
---+ DO NOT REMOVE DEFINITIONS BELOW which explain the algorithm
---+ canForgeWord(word,entry) ==--
---+ [d,i,s,t] := forge(word,0,MAXINDEX word,entry,0,MAXINDEX entry,0,0,0,0)
---+ --d=deletions, i=insertions, s=substitutions, t=transpositions
---+ --list is formed only for tuning purposes-- remove later on
---+ d + i + s + t
- 
---+forge(word,w,W,entry,e,E,d,i,s,t) ==
---+  w > W =>
---+    e > E => [d,i,s,t]
---+    [d,E-e+i+1,s,t]
---+  e > E => [W-w+d+1,i,s,t]
---+  word.w = entry.e => forge(word,w+1,W,entry,e+1,E,d,i,s,t)
---+  w=W or e=E => forge(word,w+1,W,entry,e+1,E,d,i,s+1,t)
---+  word.w=entry.(e+1) =>
---+    word.(w+1) = entry.e => forge(word,w+2,W,entry,e+2,E,d,i,s,t+1)
---+    forge(word,w+1,W,entry,e+2,E,d,i+1,s,t)
---+  word.(w+1)=entry.e => forge(word,w+2,W,entry,e+1,E,d+1,i,s,t)
---+
---+  (deltaW := W-w) > 1 and (deltaE := E-e) > 1 =>
---+    --if word is long, can we delete chars to match 2 consective chars
---+    deltaW >= deltaE and
---+      (k := or/[j for j in (w+2)..(W-1) | word.j = entry.e])
---+        and word.(k+1) = entry.(e+1) =>
---+          forge(word,k+2,W,entry,e+2,E,d+k-w,i,s,t)
---+    deltaW <= deltaE and
---+    --if word is short, can we insert chars so as to match 2 consecutive chars
---+      (k := or/[j for j in (e+2)..(E-1) | word.w = entry.j])
---+        and word.(w+1) = entry.(k+1) =>
---+          forge(word,w+2,W,entry,k+2,E,d,i+k-e,s,t)
---+    forge(word,w+1,W,entry,e+1,E,d,i,s+1,t)
---+  --check for two consecutive matches down the line
---+  forge(word,w+1,W,entry,e+1,E,d,i,s+1,t)
- 
---=======================================================================
---                          String Pattern Matching
---=======================================================================
-patternTran pattern ==
-  null hasWildCard? pattern and LITER pattern.0 and
-    UPCASE copy pattern = pattern =>
-      name:= abbreviation? INTERN pattern
-        or browseError [:bright pattern,
-          '"is not a constructor abbreviation"]
-      DOWNCASE PNAME name
-  maskConvert DOWNCASE pattern
- 
-hasWildCard? str ==
-  or/[str.i = '_? and (i=0 or not(str.(i-1) = '__ )) for i in 0..MAXINDEX str]
- 
-maskConvert str ==
---replace all ? not preceded by an underscore by &
-  buf:= GETSTR(#str)
-  j:= 0  --index into res
-  final := MAXINDEX str
-  for i in 0..final repeat
-    char := str.i
-    if char = '__ and i < final then
-      i:= i+1
-      char := str.i
-     else if char = '_? then char := '_&
-    SUFFIX(char,buf)
-  buf
- 
- 
-infix?(s,t,x) == #s + #t >= #x and prefix?(s,x) and suffix?(t,x)
- 
-prefix?(s,t) == substring?(s,t,0)
- 
-suffix?(s,t) ==
-  m := #s; n := #t
-  if m > n then return false
-  substring?(s,t,(n-m))
- 
-obSearch x ==
-  vec:= OBARRAY()
-  pattern:= PNAME x
-  [y for i in 0..MAXINDEX OBARRAY() |
-    (IDENTP (y := vec.i) or CVEC y) and match?(pattern,COPY y)]
- 
-@
-\eject
-\begin{thebibliography}{99}
-\bibitem{1} nothing
-\end{thebibliography}
-\end{document}