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// Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
// Copyright (C) 1992-2008 - INRIA - Serge STEER <serge.steer@inria.fr>
//
// This file must be used under the terms of the CeCILL.
// This source file is licensed as described in the file COPYING, which
// you should have received as part of this distribution. The terms
// are also available at
// http://www.cecill.info/licences/Licence_CeCILL_V2.1-en.txt
function vars=macrovar(macro)
// Returns in a list the set of varibles used by a macro
// mac : macro
// vars : list(in,out,globals,called,locals)
// in : input variables
// out: output variables
// globals: global variables
// called : macros called
// locals : local variables
//!
if argn(2) < 1 then
error(sprintf(_("%s: Wrong number of input argument(s): %d expected.\n"), "macrovar", 1));
end
if type(macro)==11 then comp(macro),end
if type(macro)<>13 then
error(msprintf(gettext("%s: Wrong type for input argument #%d: Scilab function expected.\n"),"macrovar",1)),
end
lst=macr2lst(macro);
out=lst(2)',if prod(size(out))==0 then out =[],end
in=lst(3)'
vars=[]
getted=[]
[vars,getted]=listvars(lst)
ng=prod(size(getted))
globals=[],called=[]
for k=1:ng
if (find(getted(k)==vars)==[])&(find(getted(k)==in)==[]) then
clear w //to avoid redefinition warning (bug 1774)
ierr=execstr("w="+getted(k),"errcatch")
if ierr==0 then //the variable exists
if or(type(w)==[13 130 11]) then
called=[called;getted(k)]
else
globals=[globals;getted(k)]
end
else
globals=[globals;getted(k)]
lasterror(%t) // clear the error (bug 2393)
end
end
end
locals=[]
nl=prod(size(vars))
for k=1:nl
if (find(vars(k)==in)==[])&(find(vars(k)==out)==[]) then
locals=[locals;vars(k)]
end
end
vars=list(in,out,globals,called,locals)
endfunction
function [vars,getted]=listvars(lst)
for lstk=lst
if type(lstk)==15 then
[vars,getted]=listvars(lstk)
else
if lstk(1)=="1"|lstk(1)=="for" then
// case 1 retained for 2.7 and earlier versions
vars=[vars;addvar(lstk(2))],
elseif lstk(1)=="29" then
nlhs=(size(lstk,"*")-2)/2
for k=0:nlhs-1
vars=[vars;addvar(lstk(3+2*k))],
end
elseif or(lstk(1)==["2","20"]) then
getted=[getted;addget(lstk(2))],
end
end
end
endfunction
function vnam=addvar(vnam)
if find(vnam==vars)<>[] then
vnam=[]
end
endfunction
function vnam=addget(vnam)
if find(vnam==getted)<>[] then
vnam=[]
end
endfunction
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