public static string Substring([NotNull] this string str, StringOrigin origin, int length)
{
if (str == null)
{
throw new ArgumentNullException(nameof(str));
}
// Fast path
var strLen = str.Length;
if (strLen == 0 || length == 0)
{
return("");
}
if (length >= strLen)
{
return(str);
}
switch (origin)
{
case StringOrigin.Begin:
return(str.Substring(0, length));
case StringOrigin.End:
return(str.Substring(strLen - length, length));
default:
throw new ArgumentOutOfRangeException(nameof(origin), origin, null);
}
}
public static string Substring([NotNull] this string str, StringOrigin origin, int length)
{
Code.NotNull(str, nameof(str));
// Fast path
var strLen = str.Length;
if (strLen == 0 || length == 0)
{
return("");
}
if (length >= strLen)
{
return(str);
}
switch (origin)
{
case StringOrigin.Begin:
return(str.Substring(0, length));
case StringOrigin.End:
return(str.Substring(strLen - length, length));
default:
throw CodeExceptions.Argument(nameof(origin), $"Invalid {nameof(StringOrigin)} value.");
}
}
public void PrintMessageTest()
{
string source = "OK. Error <- here is an error!";
IOriginReader reader = new StringOrigin(source).GetReader();
for (int i = 0; i < 4; i++)
{
reader.MoveNext(); // 'OK. '
}
ILocation locBeg = reader.CurrentLocation;
for (int i = 0; i < 5; i++)
{
reader.MoveNext(); // 'Error'
}
ILocation locEnd = reader.CurrentLocation;
IFragment fr = locBeg.Origin.MakeFragment(locBeg, locEnd);
SourceDiagnostic sd = new SourceDiagnostic();
string res = sd.PrepareMessage("warning", fr, "found an error in your source");
sd.PrintMessage("warning", fr, "found an error in your source");
Assert.AreEqual(res, "warning at line 1:4 \"Error\" - found an error in your source");
}
internal static IEnumerable <Tuple <string, IEnumerable <int> > > Process(this Nicodem.Lexer.Lexer lexer, string s)
{
var origin = new StringOrigin(s);
return(lexer
.ProcessBare(origin)
.Select(t => new Tuple <string, IEnumerable <int> >(origin.GetText(t.Item1), t.Item2)));
}
protected IEnumerable <ParseLeaf <CharSymbol> > BuildCode(string[] input)
{
var origin = new StringOrigin("");
return(input.Select(k => {
return new ParseLeaf <CharSymbol>(
new OriginFragment(origin,
new OriginPosition(),
new OriginPosition()),
_builder.GetSymbolForTerm(k));
}));
}
//[Test()]
public void Sample01Test() // bad test -> strings not implemented
{
var s = new StringBuilder();
s.AppendLine("main(int x) -> void");
s.AppendLine("{");
s.AppendLine(" print(\"Hello, World!\\n\");");
s.AppendLine("}");
var inputFile = new StringOrigin(s.ToString());
var parseTree = CSTBuilder.Build(inputFile);
var backendFunctions = new Frontend().FromParseTreeToBackend(parseTree);
foreach (var f in backendFunctions)
{
Console.WriteLine(f);
}
}
public static string Substring(this string str, StringOrigin origin, int length)
{
Code.NotNull(str, nameof(str));
// Fast path
var strLen = str.Length;
if (strLen == 0 || length == 0)
{
return("");
}
if (length >= strLen)
{
return(str);
}
return
(origin switch
{
StringOrigin.Begin => str.Substring(0, length),
StringOrigin.End => str.Substring(strLen - length, length),
_ => throw CodeExceptions.Argument(nameof(origin), $"Invalid {nameof(StringOrigin)} value.")
});
public void PrintFragmentInLineTest()
{
string source = "OK. Error in line 1\nLine 2.";
IOriginReader reader = new StringOrigin(source).GetReader();
for (int i = 0; i < 4; i++)
{
reader.MoveNext(); // 'OK. '
}
ILocation locBeg = reader.CurrentLocation;
for (int i = 0; i < 5; i++)
{
reader.MoveNext(); // 'Error'
}
ILocation locEnd = reader.CurrentLocation;
IFragment fr = locBeg.Origin.MakeFragment(locBeg, locEnd);
SourceDiagnostic sd = new SourceDiagnostic();
sd.PrintFragmentInLine(fr);
}
public string SubstringOrigin([NotNull] string str, StringOrigin origin, int length) => str.Substring(origin, length);
public string SubstringOrg(string str, StringOrigin origin, int length) => str.Substring(origin, length);
public string SubstringOrigin(string str, StringOrigin origin, [NonNegativeValue] int length) => str.Substring(origin, length);
