private static IExpression ParseBlock(IdentifierToken name, IEnumerator <Token> tokenStream)
{
var token = tokenStream.GetNext();
return(token switch
{
CloseBraceToken _ => new Block(name, ImmutableArray <Assignment> .Empty),
IdentifierToken i => ParseBlock(name, i, tokenStream),
_ => throw ParsingException.CreateError(token, "identifier or end of block"),
});
private static IExpression ParseBlockOrTupleList(IdentifierToken name, IEnumerator <Token> tokenStream)
{
var token = tokenStream.GetNext();
return(token switch
{
OpenBraceToken ob => ParseIntTupleList(name, ob.Location, tokenStream),
CloseBraceToken _ => new Block(name, ImmutableArray <Assignment> .Empty),
IdentifierToken i => ParseBlock(name, i, tokenStream),
_ => throw ParsingException.CreateError(token, "identifier, end of block, or start of tuple"),
});