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// Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
// Copyright (C) ???? - INRIA - Scilab
//
// 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 variablename=variablesearch(instr,variablename)
// VARIABLESEARCH recursive function (used by "translatepaths" function)
// Searches names of declared variables for each instruction of mtlbtree
// Output
// -variablename : a vector which contains the names of declared variables
// -instr : mtlbtree instruction
// case : ifthenelse instruction
if typeof(instr) == "ifthenelse" then
for i=1:size(instr.then)
[variablename]=variablesearch((instr.then(i)),variablename)
end
for i=1:size(instr.elseifs)
for k=1:size(instr.elseifs(i).then)
[variablename]=variablesearch((instr.elseifs(i).then(k)),variablename)
end
end
for i=1:size(instr.else)
[variablename]=variablesearch((instr.else(i)),variablename)
end
// case : selectcase instruction
elseif typeof(instr) == "selectcase" then
for i=1:size(instr.cases)
[variablename]=variablesearch(instr.cases(i).expression,variablename)
for j=1:size(instr.cases(i).then)
[variablename]=variablesearch((instr.cases(i).then(j)),variablename)
end
end
for i=1:size(instr.else)
[variablename]=variablesearch(instr.else(i),variablename)
end
// case : while instruction
elseif typeof(instr) == "while" then
for i=1:size(instr.statements)
[variablename]=variablesearch(instr.statements(i),variablename)
end
// case : for instruction
elseif typeof(instr) == "for" then
[variablename]=variablesearch(instr.expression,variablename)
for i=1:size(instr.statements)
[variablename]=variablesearch(instr.statements(i),variablename)
end
// case : equal instruction
elseif typeof(instr) == "equal" then
for i=1:size(instr.lhs)
[variablename]=variablesearch(instr.lhs(i),variablename)
end
// case : operation instruction
elseif typeof(instr) == "operation" then
if instr.operator=="ins" then
if find(instr.operands(1).name==variablename)==[] then
variablename($+1)=instr.operands(1).name
end
end
// case : variable instruction
elseif typeof(instr) == "variable" then
if find(instr.name==variablename)==[] & instr.name<>"ans" then
variablename($+1)=instr.name
end
end
endfunction
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