public override IPStmt VisitStringAssignStmt(PParser.StringAssignStmtContext context)
{
IPExpr variable = exprVisitor.Visit(context.lvalue());
string baseString = context.StringLiteral().GetText();
baseString = baseString.Substring(1, baseString.Length - 2); // strip beginning / end double quote
int numNecessaryArgs = TypeCheckingUtils.PrintStmtNumArgs(baseString);
if (numNecessaryArgs == -1)
{
throw handler.InvalidStringAssignFormat(context, context.StringLiteral().Symbol);
}
List <IPExpr> args = TypeCheckingUtils.VisitRvalueList(context.rvalueList(), exprVisitor).ToList();
foreach (IPExpr arg in args)
{
if (arg is LinearAccessRefExpr)
{
throw handler.StringAssignStmtLinearArgument(arg.SourceLocation);
}
}
if (args.Count != numNecessaryArgs)
{
throw handler.IncorrectArgumentCount(context, args.Count, numNecessaryArgs);
}
if (variable.Type != PrimitiveType.String)
{
throw handler.TypeMismatch(context, variable.Type, PrimitiveType.String);
}
return(new StringAssignStmt(context, variable, baseString, args));
}
public Exception InvalidStringAssignFormat(PParser.StringAssignStmtContext context, IToken symbol)
{
return(IssueError(context,
symbol,
"String assign format placeholders must contain only digits. Escape braces by doubling them."));
}
