ArgSet::eInitArgsStat ArgSet::InitArgs
(TextStream & text,
int numExpected)
{
// we'll re-init even if we've been init'd already
_args.Clear ();
if (! numExpected)
{
// If no args expected, don't try to consume "()"
return kInitNoError;
}
if (! text.Expect ("("))
return kInitNoStartParen;
while (numExpected--)
{
ArgDef thisArg;
ArgDef::eInitStat stat;
if (! text.GetLength())
return kInitArgsTooFew;
//
// why did this line cause Purify to
// think there was a memory leak?
//
// if (text.Expect(")"))
TextStream closeParen (")");
if (text.Expect(closeParen))
{
return kInitArgsTooFew;
}
stat = thisArg.Init (text);
switch (stat)
{
case ArgDef::kInitBadEscape:
return kInitNoEndParen;
case ArgDef::kInitNotTerminated:
return kInitNoEndParen;
default:
// unknown error
assert (0);
break;
case ArgDef::kInitNoError:
_args.Append (thisArg);
break;
}
}
if (! text.Expect(")"))
{
return kInitArgsTooMany;
}
return kInitNoError;
}
void ArgDef::Test ()
{
//
// Init(), GetText()
//
ArgDef ad;
TextStream ts;
TextStream input;
eInitStat stat;
assert (0 == ad._rep.GetLength());
input = "something";
stat = ad.Init (input);
assert (kInitNotTerminated == stat);
input = "proper)";
stat = ad.Init (input);
assert (kInitNoError == stat);
ts = ad.GetText ();
assert (0 != ts.GetLength());
assert (ts.Expect ("proper"));
assert (0 == ts.GetLength());
assert (input.Expect (")"));
assert (0 == input.GetLength());
input = "(paren in arg)";
stat = ad.Init (input);
assert (kInitNoError == stat);
ts = ad.GetText ();
assert (0 != ts.GetLength());
assert (ts.Expect ("(paren in arg"));
assert (0 == ts.GetLength());
assert (input.Expect (")"));
assert (0 == input.GetLength());
input = "middle arg,yup)";
stat = ad.Init (input);
assert (kInitNoError == stat);
ts = ad.GetText ();
assert (0 != ts.GetLength());
assert (ts.Expect ("middle arg"));
assert (0 == ts.GetLength());
assert (input.Expect ("yup)"));
assert (0 == input.GetLength());
input = "comma in\\, arg, here";
stat = ad.Init (input);
assert (kInitNoError == stat);
ts = ad.GetText ();
assert (0 != ts.GetLength());
assert (ts.Expect ("comma in, arg"));
assert (0 == ts.GetLength());
assert (input.Expect (" here"));
assert (0 == input.GetLength());
input = " \t\t\n\t White\tspace in here.,";
stat = ad.Init (input);
assert (kInitNoError == stat);
ts = ad.GetText ();
assert (0 != ts.GetLength());
assert (ts.Expect ("White\tspace in here."));
assert (0 == ts.GetLength());
assert (0 == input.GetLength());
input = "bad escape\\";
stat = ad.Init (input);
assert (kInitBadEscape == stat);
}
