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function [FileInfo,SharedInfo] = AST_HandleWhileStatem(FileInfo,SharedInfo)
// -----------------------------------------------------------------
//#RNU_RES_B
// Handles the WhileStatements tag of the AST.
//
// txt=['While'
// ' WhileExpression:'
// ' '+string(W.expression)
// ' WhileStatements:'
// ' '+objectlist2string(W.statements)
// 'EndWhile']
//
//#RNU_RES_E
// Input data:
// //NUT: add description here
//
// Output data:
// //NUT: add description here
//
// Status:
// 20-Jan-2008 -- Edoardo Nutricato: Author.
// 20-Jan-2008 -- Rubby Nutricato: Minor Changes.
//
// Copyright 2007 Raffaele Nutricato.
// Contact: raffaele.nutricato@tiscali.it
// -----------------------------------------------------------------
//#RNU_RES_B
//NUT: accertati che l'epilogo e il prologo del while siano effettivamente differenti o se
//NUT: si puo' avere un solo file utilizzato sia per il prologo che per l'epilogo.
//NUT: da sistemare senza le global
//#RNU_RES_E
global SCI2CSTACK
global StackPosition;
global STACKDEDUG
// ------------------------------
// --- Check input arguments. ---
// ------------------------------
SCI2CNInArgCheck(argn(2),2,2);
// -----------------------
// --- Initialization. ---
// -----------------------
nxtscifunname = SharedInfo.NextSCIFunName;
nxtscifunnumber = SharedInfo.NextSCIFunNumber;
ReportFileName = FileInfo.Funct(nxtscifunnumber).ReportFileName;
CPass1WhileProlFileName = FileInfo.Funct(nxtscifunnumber).CPass1WhileProlFileName(SharedInfo.While.Level);
PrintStepInfo('Handling WhileStatements',FileInfo.Funct(nxtscifunnumber).ReportFileName,'file');
// ---------------------------
// --- End Initialization. ---
// ---------------------------
//#RNU_RES_B
// -----------------------------------------------
// --- Resume the correct name while CPass1V1. ---
// -----------------------------------------------
//#RNU_RES_E
tmpfilename = FileInfo.Funct(nxtscifunnumber).CPass1FileName;
FileInfo.Funct(nxtscifunnumber).CPass1FileName = FileInfo.Funct(nxtscifunnumber).CPass1WhileProlFileName(SharedInfo.While.Level);
FileInfo.Funct(nxtscifunnumber).CPass1WhileProlFileName(SharedInfo.While.Level) = tmpfilename;
CPass1WhileProlFileName = FileInfo.Funct(nxtscifunnumber).CPass1WhileProlFileName(SharedInfo.While.Level);
PrintStringInfo(' Redirecting C code to: '+FileInfo.Funct(nxtscifunnumber).CPass1FileName,FileInfo.Funct(nxtscifunnumber).ReportFileName,'file');
//#RNU_RES_B
// ------------------------
// --- Generate C code. ---
// ------------------------
//#RNU_RES_E
if(SharedInfo.WhileExpr.CondVar == '')
//#RNU_RES_B
// It means that we are handling something like while(a) or while(1)
// The while condition variable is generated by the HandleEndGenFun.
//#RNU_RES_E
// --- Pop the name of the condition variable or number. ---
Pop1 = AST_PopASTStack();
[ArgName,ArgScope] = AST_ExtractNameAndScope(Pop1);
if (length(ArgName) == 0)
PrintStringInfo(' ',ReportFileName,'both','y');
PrintStringInfo('SCI2CERROR: Expected while(variable) or while(number).','','stdout','y');
PrintStringInfo('SCI2CERROR: Expected a variable or number in the AST while expression.','','stdout','y');
PrintStringInfo('SCI2CERROR: Report this error to http://forge.scilab.org/index.php/p/scilab2c/issues/.','','stdout','y');
PrintStringInfo(' ',ReportFileName,'both','y');
error(9999, 'Expected a conditional variable in the while expression');
end
SharedInfo.WhileExpr.CondVar = ArgName;
//#RNU_RES_B
// --- Repush strings into the AST stack. ---
//#RNU_RES_E
AST_PushASTStack(Pop1);
elseif (SharedInfo.WhileExpr.DimCondVar > 0)
error(9999, 'Cannot manage while with matrix conditions');
end
SharedInfo = C_WhileExpression(FileInfo,SharedInfo);
// --------------------------
// --- Update SharedInfo. ---
// --------------------------
// Signal the exit from a while expression.
SharedInfo.WhileExpr.OnExec = SharedInfo.WhileExpr.OnExec - 1;
SharedInfo.WhileExpr.CondVar = '';
SharedInfo.WhileExpr.DimCondVar = -1;
SharedInfo.WhileExpr.AssignmentFun = 0; //NUT: siamo sicuri che serva?
// -------------------------------
// --- Delete temporary files. ---
// -------------------------------
SCI2Cmdelete(CPass1WhileProlFileName);
endfunction
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