public static IArgument Executable(CharSource source, ref char chr, Dictionary <string, IFunction> funcs)
{
// Having seen '<'
if (!source.AdvanceWhiteSpace(out chr))
{
throw new FinalCharacterException("Expected statements, or closing '>'");
}
var exec = new ExecutableArgument();
// Statement reading takes us to the first character of the next potential
while (true)
{
if (chr == '>')
{
source.Advance(out chr);
return(exec);
}
var statement = Statement(source, ref chr, funcs);
exec.Value.Add(statement);
}
}
public static IArgument Default(CharSource source, ref char chr)
{
if (CharSource.IsNameStart(chr))
{
var name = source.ReadName(ref chr);
if (bool.TryParse(name, out var bval))
{
return(new BooleanLiteral()
{
Value = bval
});
}
return(new NameArgument()
{
Value = name
});
}
else if (CharSource.IsNumberStart(chr))
{
return(Number(source, ref chr));
}
throw new InvalidCharacterException($"Not a valid name or number start: '{chr}'");
}
public static ArgumentList Multiple(CharSource source, ref char chr, Dictionary <string, IFunction> funcs)
{
var args = new ArgumentList();
// Typically get here having seen nothing or the first character already
// Running out of text here is not an error, unless specified as more to come
while (source.SkipWhiteSpace(ref chr))
{
var arg = Single(source, ref chr, funcs);
args.Add(arg);
if (!source.SkipWhiteSpace(ref chr))
{
return(args);
}
else if (chr != ',')
{
return(args);
}
source.Advance(out chr);
}
// No need to throw here, as if more expected single argument parsing will catch
return(args);
}
