internal static List <VarValue> VisitValueChangeStream(VCDLexer lexer, IDToVarDef idToVariable, SimPass pass, BitAllocator bitAlloc)
{
List <VarValue> changes = new List <VarValue>();
while (!lexer.IsEmpty())
{
ReadOnlyMemory <byte> text = lexer.NextWordAsMem();
ReadOnlySpan <byte> endToken = new byte[] { (byte)'$', (byte)'e', (byte)'n', (byte)'d' };
if (text.Span.SequenceEqual(endToken))
{
break;
}
VisitValueChange(lexer, text, idToVariable, pass, bitAlloc);
if (pass.BinValue.HasValue)
{
changes.Add(pass.BinValue);
}
else if (pass.RealValue.HasValue)
{
changes.Add(pass.RealValue);
}
else
{
throw new Exception("Expected to read a value change but found none.");
}
}
pass.Reset();
return(changes);
}
internal static (List <IDeclCmd> declarations, IDToVarDef idToVariable) VisitDeclCmdStream(VCDLexer lexer)
{
List <IDeclCmd> declarations = new List <IDeclCmd>();
IDToVarDef idToVariable = new IDToVarDef();
Stack <Scope> scopes = new Stack <Scope>();
while (!lexer.IsEmpty())
{
IDeclCmd?decl = VisitDeclCmd(lexer, idToVariable, scopes);
if (decl == null)
{
break;
}
declarations.Add(decl);
}
if (scopes.Count != 0)
{
throw new Exception("Not all declaration scopes were closed.");
}
return(declarations, idToVariable);
}
