MathAction SandboxFreeAndLocal

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- SandBox
  - SandBoxLexicalScope
    - SandboxFreeAndLocal <-- You are here.

spad

)abbrev domain AAA Aaa
Aaa: with
    foo: Integer -> Integer
  == add
    z: Integer := 0
    zzz: () -> Integer
    foo(n: Integer): Integer == 
        z := 1
        n + 2*zzz()
    zzz(): Integer == z

spad

   Compiling FriCAS source code from file 
      /var/lib/zope2.10/instance/axiom-wiki/var/LatexWiki/8846046079375810821-25px001.spad
      using old system compiler.
   AAA abbreviates domain Aaa 
------------------------------------------------------------------------
   initializing NRLIB AAA for Aaa 
   compiling into NRLIB AAA 
   compiling exported foo : Integer -> Integer
Time: 0.01 SEC.

   compiling local zzz : () -> Integer
Time: 0 SEC.

(time taken in buildFunctor:  0)

;;;     ***       |Aaa| REDEFINED

;;;     ***       |Aaa| REDEFINED
Time: 0 SEC.

   Cumulative Statistics for Constructor Aaa
      Time: 0.01 seconds

   finalizing NRLIB AAA 
   Processing Aaa for Browser database:
--->-->Aaa(constructor): Not documented!!!!
--->-->Aaa((foo ((Integer) (Integer)))): Not documented!!!!
--->-->Aaa(): Missing Description
; compiling file "/var/aw/var/LatexWiki/AAA.NRLIB/AAA.lsp" (written 04 APR 2022 06:57:19 PM):

; /var/aw/var/LatexWiki/AAA.NRLIB/AAA.fasl written
; compilation finished in 0:00:00.011
------------------------------------------------------------------------
   Aaa is now explicitly exposed in frame initial 
   Aaa will be automatically loaded when needed from 
      /var/aw/var/LatexWiki/AAA.NRLIB/AAA

The following seems to be wrong. The variable z in the body of foo is "assigned a value before it is referenced, so it is a local variable", according to Section 6.16 of the Axiom Book .

fricas

foo(0)

$\label{eq1}2$

(1)

Type: PositiveInteger?

spad

)abbrev domain AAAL AaaLocal
AaaLocal: with
    fool: Integer -> Integer
  == add
    z: Integer := 0
    zzzl: () -> Integer
    fool(n: Integer): Integer == 
        local z: Integer
        z := 1
        n + 2*zzzl()
    zzzl(): Integer == z

spad

   Compiling FriCAS source code from file 
      /var/lib/zope2.10/instance/axiom-wiki/var/LatexWiki/7742866875728626797-25px003.spad
      using old system compiler.
   AAAL abbreviates domain AaaLocal 
******** Spad syntax error detected ********
Expected: BACKTAB
The prior line was:

    7>     fool(n: Integer): Integer == 

The current line is:

    8>         local z: Integer

The number of valid tokens is 1.
The prior token was #S(TOKEN
                       :SYMBOL SETTAB
                       :TYPE KEYWORD
                       :NONBLANK NIL
                       :LINE_NUM 8
                       :CHAR_NUM 8)
The current token is #S(TOKEN
                        :SYMBOL |local|
                        :TYPE KEYWORD
                        :NONBLANK NIL
                        :LINE_NUM 8
                        :CHAR_NUM 8)

fricas

fool(0)

   There are no library operations named fool 
      Use HyperDoc Browse or issue
                                )what op fool
      to learn if there is any operation containing " fool " in its 
      name.

   Cannot find a definition or applicable library operation named fool 
      with argument type(s) 
                             NonNegativeInteger

      Perhaps you should use "@" to indicate the required return type, 
      or "$" to specify which version of the function you need.

An output of 2 seems wrong again here. I even have explicitly declared z to be local. I would have expected 0. But somehow the assignment escapes into zzzl.

spad

)abbrev domain AAAF AaaFree
AaaFree: with
    foof: Integer -> Integer
  == add
    z: Integer := 0
    zzzf: () -> Integer
    foof(n: Integer): Integer == 
        free z: Integer
        z := 1
        n + 2*zzzf()
    zzzf(): Integer == z

spad

   Compiling FriCAS source code from file 
      /var/lib/zope2.10/instance/axiom-wiki/var/LatexWiki/2076018909214082053-25px005.spad
      using old system compiler.
   AAAF abbreviates domain AaaFree 
******** Spad syntax error detected ********
Expected: BACKTAB
The prior line was:

    7>     foof(n: Integer): Integer == 

The current line is:

    8>         free z: Integer

The number of valid tokens is 1.
The prior token was #S(TOKEN
                       :SYMBOL SETTAB
                       :TYPE KEYWORD
                       :NONBLANK NIL
                       :LINE_NUM 8
                       :CHAR_NUM 8)
The current token is #S(TOKEN
                        :SYMBOL FREE
                        :TYPE KEYWORD
                        :NONBLANK NIL
                        :LINE_NUM 8
                        :CHAR_NUM 8)

The following output of 2 should be fine.

fricas

foof(0)

   There are no library operations named foof 
      Use HyperDoc Browse or issue
                                )what op foof
      to learn if there is any operation containing " foof " in its 
      name.

   Cannot find a definition or applicable library operation named foof 
      with argument type(s) 
                             NonNegativeInteger

      Perhaps you should use "@" to indicate the required return type, 
      or "$" to specify which version of the function you need.

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