private static GraceObject mAsString(EvaluationContext ctx,
MethodRequest req,
CodepointObject self)
{
return(GraceString.Create("U+" + self.codepoint.ToString("X4")
+ " " + self.parts[0]));
}
private static GraceObject mAt(EvaluationContext ctx,
MethodRequest req,
StringCodepoints self)
{
MethodHelper.CheckArity(ctx, req, 1);
var oth = req[0].Arguments[0].FindNativeParent <GraceNumber>();
if (oth == null)
{
ErrorReporting.RaiseError(ctx, "R2001",
new Dictionary <string, string> {
{ "method", req.Name },
{ "index", "1" },
{ "part", req.Name },
{ "required", "Number" },
}, "ArgumentTypeError: Index must be a number");
}
int idx = oth.GetInt() - 1;
if (idx >= self.codepoints.Length || idx < 0)
{
ErrorReporting.RaiseError(ctx, "R2013",
new Dictionary <string, string> {
{ "index", "" + (idx + 1) },
{ "valid", self.codepoints.Length > 0 ?
"1 .. " + self.codepoints.Length
: "none (empty)" }
}, "IndexError: Index out of range");
}
if (self.codepoints[idx] == null)
{
self.codepoints[idx] = CodepointObject.Create(self.utf32[idx]);
}
return(self.codepoints[idx]);
}
/// <summary>
/// Create a codepoint object for a given codepoint.
/// </summary>
/// <param name="cp">Codepoint to represent</param>
/// <remarks>
/// These objects are cached, so that only one object for
/// a given codepoint is created.
/// </remarks>
public static CodepointObject Create(int cp)
{
if (!cache.ContainsKey(cp))
{
cache[cp] = new CodepointObject(cp);
}
return(cache[cp]);
}
private static GraceObject mDigit(EvaluationContext ctx,
MethodRequest req,
CodepointObject self)
{
// By convention, return -1 for non-numeric codepoints.
if (self.parts[6] == "")
{
return(GraceNumber.Create(-1));
}
return(GraceNumber.Create(int.Parse(self.parts[6])));
}
private static GraceObject mGTE(EvaluationContext ctx,
MethodRequest req,
CodepointObject self)
{
MethodHelper.CheckArity(ctx, req, 1);
var other = req[0].Arguments[0] as CodepointObject;
if (other == null)
{
return(GraceBoolean.False);
}
return(GraceBoolean.Create(self.codepoint >= other.codepoint));
}
private static GraceObject mNumeric(EvaluationContext ctx,
MethodRequest req,
CodepointObject self)
{
// By convention, return -1 for non-numeric codepoints.
if (self.parts[7] == "")
{
return(GraceNumber.Create(-1));
}
int val;
if (int.TryParse(self.parts[7], out val))
{
return(GraceNumber.Create(val));
}
// At this point, it must be a fraction n/m.
var bits = self.parts[7].Split('/');
var rat = Rational.Create(int.Parse(bits[0]), int.Parse(bits[1]));
return(GraceNumber.Create(rat));
}
private static GraceObject mString(EvaluationContext ctx,
MethodRequest req,
CodepointObject self)
{
return(GraceString.Create(Char.ConvertFromUtf32(self.codepoint)));
}
private static GraceObject mTitlecase(EvaluationContext ctx,
MethodRequest req,
CodepointObject self)
{
return(mapCodepointSequenceString(self.parts[13]));
}
private static GraceObject mMirrored(EvaluationContext ctx,
MethodRequest req,
CodepointObject self)
{
return(GraceBoolean.Create(self.parts[8] == "Y"));
}
private static GraceObject mDecomposition(EvaluationContext ctx,
MethodRequest req,
CodepointObject self)
{
return(mapCodepointSequenceString(self.parts[4]));
}
private static GraceObject mBidirectional(EvaluationContext ctx,
MethodRequest req,
CodepointObject self)
{
return(GraceString.Create(self.parts[3]));
}
private static GraceObject mCombining(EvaluationContext ctx,
MethodRequest req,
CodepointObject self)
{
return(GraceNumber.Create(int.Parse(self.parts[2])));
}
private static GraceObject mCodepoint(EvaluationContext ctx,
MethodRequest req,
CodepointObject self)
{
return(GraceNumber.Create(self.codepoint));
}
