function AST2Ccode(FileInfoDatFile)
// function AST2Ccode(FileInfoDatFile)
// -----------------------------------------------------------------
// Read the AST and call the corresponding handlers.
//
// Input data:
// //NUT: add description here
//
// Output data:
// //NUT: add description here
//
// Status:
// 11-May-2007 -- Raffaele Nutricato: Author.
//
// Copyright 2007 Raffaele Nutricato.
// Contact: raffaele.nutricato@tiscali.it
// -----------------------------------------------------------------
// ------------------------------
// --- Check input arguments. ---
// ------------------------------
SCI2CNInArgCheck(argn(2),1,1);
//NUT: questa funzione e' da sistemare meglio
// ---------------------
// --- Load section. ---
// ---------------------
// --- Load File Info Structure. ---
load(FileInfoDatFile,'FileInfo');
// --- Load Shared Info Structure. ---
load(FileInfo.SharedInfoDatFile,'SharedInfo');
// -------------------------
// --- End load section. ---
// -------------------------
// ---------------------------------------------------
// --- Extraction of the function name and number. ---
// ---------------------------------------------------
nxtscifunname = SharedInfo.NextSCIFunName;
nxtscifunnumber = SharedInfo.NextSCIFunNumber;
ReportFileName = FileInfo.Funct(nxtscifunnumber).ReportFileName;
// ---------------------------------
// --- Parameter Initialization. ---
// ---------------------------------
global SCI2CSTACK
SCI2CSTACK = ['EMPTYSTACK'];
global StackPosition;
StackPosition = 1;
global STACKDEDUG
STACKDEDUG = 0; // 1 -> Every Pop and Push operation on the stack, the stack content will be printed on screen.
// -------------------------------------
// --- End parameter Initialization. ---
// -------------------------------------
ASTFileName = FileInfo.Funct(nxtscifunnumber).ASTFileName;
// -----------------------
// --- Initialization. ---
// -----------------------
// --- Open AST file. ---
SharedInfo.ASTReader.fidAST = SCI2COpenFileRead(ASTFileName);
fidAST = SharedInfo.ASTReader.fidAST;
OrigWorkAreaUsedBytes = SharedInfo.WorkAreaUsedBytes;
OrigUsedTempScalarVars = SharedInfo.UsedTempScalarVars;
PrintStepInfo('Generate C code in '+FileInfo.Funct(nxtscifunnumber).FinalCFileName,...
FileInfo.GeneralReport,'both');
// ---------------------------
// --- End initialization. ---
// ---------------------------
// ------------------------
// --- Parse AST header. ---
// ------------------------
ASTHeader = AST_ReadASTHeader(fidAST,ReportFileName);
SharedInfo = AST_HandleHeader(ASTHeader,FileInfo,SharedInfo);
//NUT: le metto per ora perche' quando provo a cercare lo specifier di precisione al termine
//NUT: del programma non ho piu' nulla da poppare se lo specifier e' assente. Al limite posso mettere la program e i nomi
//NUT: al posto di dummy.
AST_PushASTStack('Dummy');
AST_PushASTStack('Dummy');
AST_PushASTStack('Dummy');
AST_PushASTStack('Dummy');
AST_PushASTStack('Dummy');
AST_PushASTStack('Dummy');
AST_PushASTStack('Dummy');
AST_PushASTStack('Dummy');
//NUT: Se ne tolgo qualcuno ottengo errori
// ----------------------------
// --- End Parse AST header. ---
// ----------------------------
//NUT: better to have a function.
// --- Reset TempVars Structure. ---
TempVars = [];
// Reset info related to temp variables used in the C code.
SharedInfo.WorkAreaUsedBytes = OrigWorkAreaUsedBytes;
SharedInfo.UsedTempScalarVars = OrigUsedTempScalarVars;
//NUT: put here a manageeol so that you can have all the save and load you want.
SharedInfo.ASTReader.UsedTempVars = 0;
// ----------------------------------
// --- Main loop to read the AST. ---
// ----------------------------------
//NUT: file ottenuto con m2sci se hai tempo prova a vedere se ci sono inesattezze.
//NUT: inoltre per maggiore eleganza si puo' pensare di introdurre piu' funzioni
while ~meof(fidAST)
// Read a line from the AST
tline = mgetl(fidAST,1);
AST_CheckLineLength(tline);
treeline = stripblanks(tline);
if STACKDEDUG == 1
disp('Read AST Line: '+treeline);
end
// Analyze line.
select treeline
// ------------------
// --- Functions. ---
// ------------------
//NUT: qui puoi anche aggiunger piu' case per specificare meglio la struttura della funcall
//NUT: i case aggiunti ovviamente faranno solo il push della treeline.
case 'EndOperation' then
[FileInfo,SharedInfo] = AST_HandleEndGenFun(FileInfo,SharedInfo,'Operation');
case 'EndFuncall' then
[FileInfo,SharedInfo] = AST_HandleEndGenFun(FileInfo,SharedInfo,'Funcall');
// --------------
// --- Equal. ---
// --------------
case 'EndEqual' then
//NUT: prima di lanciare l'analisi della equal puoi mettere degli argomenti dummy
//NUT: per fare in modo di coprire le ins, anche se ci puo' essere qualche rischio quando
//NUT: ho miste ins e variabili, per esempio [c(1,1), a] = twooutfun();
//NUT: in questo caso solo una delle due equal va scartata.
[FileInfo,SharedInfo] = AST_HandleEndGenFun(FileInfo,SharedInfo,'Equal');
SharedInfo = INIT_SharedInfoEqual(SharedInfo);
case 'Equal' then
SharedInfo.Equal.Enabled = 1; // 1 means enabled -> we are inside an equal AST block.
AST_PushASTStack(treeline);
case 'Lhs :' then
SharedInfo.Equal.Lhs = 1; // 1 means that we are inside the Lhs block of the Equal
[EqualInArgName,EqualInArgScope,EqualNInArg] = AST_ReadEqualRhsNames(FileInfo,SharedInfo);
SharedInfo.Equal.NInArg = EqualNInArg;
for tmpcnt = 1:SharedInfo.Equal.NInArg
SharedInfo.Equal.InArg(tmpcnt).Name = EqualInArgName(tmpcnt);
SharedInfo.Equal.InArg(tmpcnt).Scope = EqualInArgScope(tmpcnt);
end
AST_PushASTStack(treeline);
// ----------------
// --- If/Else. ---
// ----------------
//NUT: da verificare la gestione dello stack
case 'If Statements' then
[FileInfo,SharedInfo] = AST_HandleIfElse(FileInfo,SharedInfo,'if');
case 'Else If Expression' then
AST_PushASTStack(treeline);
[FileInfo,SharedInfo] = AST_HandleIfElse(FileInfo,SharedInfo,'else');
case 'Else If Statements' then
[FileInfo,SharedInfo] = AST_HandleIfElse(FileInfo,SharedInfo,'elseif');
case 'Else Statements' then
[FileInfo,SharedInfo] = AST_HandleIfElse(FileInfo,SharedInfo,'else');
case 'EndIf' then
for counter=1:SharedInfo.CountNestedIf+1
SharedInfo = C_IfElseBlocks(FileInfo,SharedInfo,'out');
end
SharedInfo.CountNestedIf = 0;
// --------------
// --- Dummy. ---
// --------------
case 'Comment :' then
AST_HandleEOL(FileInfo,SharedInfo); //NUT: si potrebbe differenziare comment da EOL
case '<EOL>' then
AST_HandleEOL(FileInfo,SharedInfo);
// -----------------
// --- Epilogue. ---
// -----------------
case 'EndProgram'
SharedInfo = AST_HandleEndProgram(FileInfo,SharedInfo);
//NUT: per essere precisi si puo' pensare di mettere un check
//NUT: alla fine dell'albero per accertarsi che c'e' end program li' dove ce lo aspettiamo
// ------------
// --- For. ---
// ------------
case 'For' then
SharedInfo.For.Level = SharedInfo.For.Level + 1;
FileInfo = AST_HandleFor(FileInfo,SharedInfo);
case 'ForExpression:'
AST_PushASTStack(treeline);
SharedInfo.ForExpr.OnExec = SharedInfo.ForExpr.OnExec + 1;
case 'ForStatements:'
[FileInfo,SharedInfo] = AST_HandleForStatem(FileInfo,SharedInfo);
case 'EndFor' then
SharedInfo = AST_HandleEndFor(FileInfo,SharedInfo);
SharedInfo.For.Level = SharedInfo.For.Level - 1;
// --------------
// --- While. ---
// --------------
case 'While' then
AST_PushASTStack(treeline);
SharedInfo.While.Level = SharedInfo.While.Level + 1;
case 'WhileExpression:'
AST_PushASTStack(treeline);
[FileInfo,SharedInfo] = AST_HandleWhileExpr(FileInfo,SharedInfo);
case 'WhileStatements:'
[FileInfo,SharedInfo] = AST_HandleWhileStatem(FileInfo,SharedInfo);
case 'EndWhile' then
SharedInfo = AST_HandleEndWhile(FileInfo,SharedInfo);
SharedInfo.While.Level = SharedInfo.While.Level - 1;
// ----------------
// --- Default. ---
// ----------------
else
AST_PushASTStack(treeline);
end
end
// --------------------------------------
// --- End main loop to read the AST. ---
// --------------------------------------
mclose(fidAST);
// ---------------------
// --- Save section. ---
// ---------------------
// --- Save Shared Info Structure. ---
save(SharedInfoDatFile,SharedInfo);
// -------------------------
// --- End save section. ---
// -------------------------
endfunction