public void AddDffInstance(DffInstance dff)
{
if (dff.IsParameterized)
{
if (parameters.ContainsKey(dff.Parameter))
{
dff.Size = parameters[dff.Parameter];
}
else
{
try {
dff.Size = EvaluateComplexParam(dff.Parameter);
} catch {
// ABORT EVALUATION: assign default width
dff.Size = 1;
//throw new Exception("The string '" + dff.Parameter + "' could not be interpreted to a defined parameter.");
}
}
}
this.localDffs.Add(dff);
}
private DffInstance ParseDffInstance(StringTokenizer tknzr, Token possibleParameter, DFFModule dffType)
{
DffInstance dff = new DffInstance(dffType);
Token currToken = tknzr.Next();
dff.ParameterBegin = possibleParameter;
dff.ParametersExist = false;
dff.ParametersNamed = false;
dff.ParamsInParens = false;
if (currToken.Value == "#")
{
dff.ParametersExist = true;
dff.ParameterBegin = currToken;
currToken = tknzr.Next();
if (currToken.Value == "(")
{
dff.ParamsInParens = true;
dff.ParameterBegin = currToken;
Token tempParamList;
string paramValue = tknzr.ParseToCloseParenthesis(out tempParamList);
dff.ParameterList = tempParamList;
dff.ParameterEnd = tempParamList;
try {
dff.Size = Convert.ToInt32(paramValue);
} catch (FormatException) {
if (paramValue.StartsWith("`"))
{
// TODO: Deal with `DEFINE'd values
dff.Size = 1;
}
else if (paramValue.StartsWith("."))
{
dff.ParametersNamed = true;
}
else
{
dff.ParametersExist = true;
dff.IsParameterized = true;
dff.Parameter = paramValue;
//throw new InvalidDataException("Wah. I don't get it. '" + currToken.Value + "' isn't a number.");
}
}
}
else
{
dff.ParameterEnd = currToken;
try {
dff.Size = Convert.ToInt32(currToken.Value); // In case they use the weird '#12' notation instead of '#(12)'
} catch (FormatException) {
if (currToken.Value == "`")
{
// TODO: Deal with `DEFINE'd values
dff.Size = 1;
}
else
{
throw new InvalidDataException("Wah. I don't get it. '" + currToken.Value + "' isn't a number.");
}
}
}
//tknzr.Next();
currToken = tknzr.Next();
dff.InstanceName = currToken.Value;
}
else
{
dff.Size = 1;
dff.InstanceName = currToken.Value;
}
while (currToken.Value != "(")
{
currToken = tknzr.Next();
}
//currToken = tknzr.Next();
dff.PortList = currToken;
while (dff.ClockPort == null || dff.DPort == null || dff.QPort == null)
{
currToken = tknzr.Next();
string word = currToken.Value;
if (word == ";")
{
break;
}
if (word == ".")
{
currToken = tknzr.Next();
switch (currToken.Value)
{
case "clk": {
tknzr.Next();
Token tempToken;
dff.ClockPort = tknzr.ParseToCloseParenthesis(out tempToken);
break;
}
case "q": {
tknzr.Next();
Token tempToken;
dff.QPort = tknzr.ParseToCloseParenthesis(out tempToken);
break;
}
case "din": {
tknzr.Next();
Token tempToken;
dff.DPort = tknzr.ParseToCloseParenthesis(out tempToken);
break;
}
}
}
}
while (currToken.Value != ";" && currToken.Kind != TokenKind.EOF)
{
currToken = tknzr.Next();
}
return(dff);
}
private VerilogModule ParseModuleDeclaration(StringTokenizer tknzr, VerilogFile vFile)
{
#region Are the ports even needed? Besides knowing where to insert the shadow chain ports
/*
* List<string> inPorts = new List<string>();
* List<string> outPorts = new List<string>();
* List<string> inoutPorts = new List<string>();
* Token currToken = null;
* Token prevToken = new Token(TokenKind.Unknown, "", 0, 0, 0);
* while (true) {
* if (currToken == null) {
* tknzr.Next();
* }
* currToken = tknzr.Next();
* if (currToken.Kind == TokenKind.EOF) {
* break;
* } else if (currToken.Value == ";" && prevToken.Value == ")") {
* break;
* } else if (currToken.Value == "input" && prevToken.Kind == TokenKind.EOL) {
*
* }
* prevToken = currToken;
* }
*/
#endregion
Token prevTok = tknzr.Next();
Token twoPrevTok = prevTok;
Token currTok = tknzr.Next();
VerilogModule vMod = new VerilogModule(vFile.FileName, prevTok.Value);
bool headerParsed = false;
while (currTok.Value != "endmodule" && currTok.Kind != TokenKind.EOF)
{
if (prevTok.Kind == TokenKind.EOL)
{
if (!RunPrecompiler(tknzr, ref prevTok, ref currTok))
{
if (currTok.Value == "parameter")
{
// PARAMETER FOUND
ParseParameter(tknzr, vMod.Parameters);
}
else if (this.project.IsDff(currTok.Value))
{
// DFF INSTANCE FOUND
DffInstance dffInst = ParseDffInstance(tknzr, currTok, project.GetDffType(currTok.Value));
if (dffInst == null)
{
throw new InvalidDataException("DFF Library was unable to instantiate from type retrieved from project.");
}
vMod.AddDffInstance(dffInst);
}
else if (this.project.IsModule(currTok.Value))
{
// MODULE INSTANCE FOUND
VerilogModuleInstance vModInst = ParseModuleInstance(vMod, tknzr, currTok, project.GetModule(currTok.Value));
if (vModInst == null)
{
throw new InvalidDataException("Error instantiating module from type retrieved from project.");
}
vMod.AddModuleInstance(vModInst);
}
else if (headerParsed && !this.project.IsKeyword(currTok.Value) && currTok.Kind == TokenKind.Word)
{
// POSSIBLE MODULE, NOT YET PARSED
/* OPTIMZATION:
* TODO: Change tokenizer to ignore everything between certain keywords and ';',
* EX: "assign blah = blah blah blah;" in case there is weird indenting for
* readibility. This will minimize the number of false Possibles.
* */
if (currTok.Value == "lsu_dc_parity_gen")
{
Console.Write("!");
}
StringTokenizer tempTknzr = new StringTokenizer(tknzr); // Perform deep copy to leave tknzr untouched
Token nameTok = tempTknzr.Next();
bool paramExist = false;
bool paramNamed = false;
Token paramList = null;
/*if (nameTok.Value == "#") {
* paramsExist = true;
* tempTknzr.Next();// (
* tempTknzr.Next();// Number
* tempTknzr.Next();// )
* nameTok = tempTknzr.Next();
* }*/
if (nameTok.Value == "#")
{
// Run through parameter lists until parens all closed
paramExist = true;
paramList = tempTknzr.Next(); // after "#("
if (paramList.Value == "(")
{
int parenPairs = 1;
while (parenPairs > 0)
{
nameTok = tempTknzr.Next();
if (nameTok.Value.Contains("."))
{
paramNamed = true;
}
if (nameTok.Value == "(")
{
parenPairs++;
}
else if (nameTok.Value == ")")
{
parenPairs--;
}
}
}
nameTok = tempTknzr.Next();
}
else
{
paramList = currTok;
}
Token tempCurrTok = tempTknzr.Next();
Token tempPrevTok = tempCurrTok;
Token tempTwoPrevTok = tempCurrTok;
while (tempCurrTok.Value != ";")
{
// Run through in/out list to end of instantiation
tempTwoPrevTok = tempPrevTok; // At ')'
tempPrevTok = tempCurrTok; // At ';'
tempCurrTok = tempTknzr.Next(); // After ';'
}
vMod.AddPossibleInstance(currTok, nameTok.Value, tempTwoPrevTok, paramExist, paramNamed, paramList);
}
}
}
twoPrevTok = prevTok;
prevTok = currTok;
currTok = tknzr.Next();
if (!headerParsed && currTok.Value == ";" /*&& prevTok.Value == ")"*/)
{
vMod.InOutListEnd = twoPrevTok;
vMod.PostHeader = tknzr.Next();
twoPrevTok = prevTok;
prevTok = (currTok.Value == ")")? currTok : prevTok;
currTok = vMod.PostHeader;
headerParsed = true;
}
}
vMod.PrevEndModule = prevTok;
return(vMod);
}