public string Format <T0>(T0 arg0)
{
var builder = new DefaultInterpolatedStringHandler(2, 1, CultureInfo.InvariantCulture);
builder.AppendLiteral(_formatSegments[0]);
FormatArgument(ref builder, arg0, _valueAlignments[0], _valueFormats[0]);
builder.AppendLiteral(_formatSegments[1]);
return(builder.ToString());
}
private static void FormatArgument <T>(ref DefaultInterpolatedStringHandler builder, T arg, int?alignment, string?format)
{
if (arg is null)
{
builder.AppendLiteral(NullValue);
}
else
{
if (alignment.HasValue && format is not null)
{
builder.AppendFormatted <T>(arg, alignment.GetValueOrDefault(), format);
}
else if (alignment.HasValue)
{
builder.AppendFormatted <T>(arg, alignment.GetValueOrDefault());
}
else if (format is not null)
{
builder.AppendFormatted <T>(arg, format);
}
else
{
builder.AppendFormatted <T>(arg);
}
}
}
public void ToStringAndClear_Clears()
{
DefaultInterpolatedStringHandler handler = new DefaultInterpolatedStringHandler(0, 0);
handler.AppendLiteral("hi");
Assert.Equal("hi", handler.ToStringAndClear());
Assert.Equal(string.Empty, handler.ToStringAndClear());
}
public void ToString_DoesntClear()
{
DefaultInterpolatedStringHandler handler = new DefaultInterpolatedStringHandler(0, 0);
handler.AppendLiteral("hi");
for (int i = 0; i < 3; i++)
{
Assert.Equal("hi", handler.ToString());
}
Assert.Equal("hi", handler.ToStringAndClear());
}
public void AppendLiteral()
{
var expected = new StringBuilder();
DefaultInterpolatedStringHandler actual = new DefaultInterpolatedStringHandler(0, 0);
foreach (string s in new[] { "", "a", "bc", "def", "this is a long string", "!" })
{
expected.Append(s);
actual.AppendLiteral(s);
}
Assert.Equal(expected.ToString(), actual.ToStringAndClear());
}
public string Format <T0, T1, T2, T3, T4, T5>(T0 arg0, T1 arg1, T2 arg2, T3 arg3, T4 arg4, T5 arg5)
{
var builder = new DefaultInterpolatedStringHandler(7, 6, CultureInfo.InvariantCulture);
builder.AppendLiteral(_formatSegments[0]);
FormatArgument(ref builder, arg0, _valueAlignments[0], _valueFormats[0]);
builder.AppendLiteral(_formatSegments[1]);
FormatArgument(ref builder, arg1, _valueAlignments[1], _valueFormats[1]);
builder.AppendLiteral(_formatSegments[2]);
FormatArgument(ref builder, arg2, _valueAlignments[2], _valueFormats[2]);
builder.AppendLiteral(_formatSegments[3]);
FormatArgument(ref builder, arg3, _valueAlignments[3], _valueFormats[3]);
builder.AppendLiteral(_formatSegments[4]);
FormatArgument(ref builder, arg4, _valueAlignments[4], _valueFormats[4]);
builder.AppendLiteral(_formatSegments[5]);
FormatArgument(ref builder, arg5, _valueAlignments[5], _valueFormats[5]);
builder.AppendLiteral(_formatSegments[6]);
return(builder.ToString());
}
public void AppendLiteral(string value)
{
_innerHandler.AppendLiteral(value);
}