/// <summary>
/// If supported, convert the provided value into a <see cref="IPropertyToken"/>.
/// </summary>
/// <param name="converter">Converter for conversion of additional values.</param>
/// <param name="value">The value to convert.</param>
/// <param name="result">Value converted to <see cref="IPropertyToken"/> if conversion was successful.</param>
/// <returns><c>true</c> if the value could be converted under this policy; <c>false</c> otherwise.</returns>
public bool TryConvert(IPropertyConverter converter, object value, out IPropertyToken result)
{
result = null;
if (converter == null)
{
throw new ArgumentNullException(nameof(converter));
}
var bytes = value as byte[];
if (bytes == null)
{
return(false);
}
//Enforce limit on size of array
if (_config.ByteArrayLimit > 0 && bytes.Length > _config.ByteArrayLimit)
{
string hexValue = string.Concat(bytes.Take(16).Select(b => b.ToString("X2")));
string description = $"0x: {hexValue}... ({bytes.Length} bytes)";
result = new ScalarToken(description);
return(true);
}
result = new ScalarToken(bytes.ToArray());
return(true);
}
/// <summary>
/// Formats content of <see cref="ScalarToken"/>.
/// </summary>
/// <param name="token">Token to be formatted.</param>
public void Format(ScalarToken token)
{
if (token.Value == null)
{
_output.Write("null");
return;
}
string text = token.Value as string;
if (text != null)
{
_output.Write("\"");
_output.Write(text.Replace("\"", "\\\""));
_output.Write("\"");
return;
}
//If object has custom formatter then use that one
var custom = (ICustomFormatter)_formatProvider.GetFormat(typeof(ICustomFormatter));
if (custom != null)
{
_output.Write(custom.Format(null, token.Value, _formatProvider));
return;
}
// Use defaults for all other formatting.
var f = token.Value as IFormattable;
_output.Write(f?.ToString(null, _formatProvider) ?? token.Value.ToString());
}
internal Boolean AllowScalar(
Boolean expand,
out ScalarToken scalar)
{
m_memory.IncrementEvents();
if (expand)
{
Unravel(expand: true);
}
if (m_current?.Value is ScalarToken scalarToken)
{
scalar = scalarToken;
// Add bytes before they are emitted to the caller (so the caller doesn't have to track bytes)
m_memory.AddBytes(scalar);
MoveNext();
return(true);
}
scalar = null;
return(false);
}
public void ScalarToken_ScalarType_ScalarContainsInputValue()
{
string value = "Hello World!";
var scalar = new ScalarToken(value);
Assert.Equal(scalar.Value, value);
}
public void Format_NullScalarToken_IsFormatedAsNullString()
{
var output = new StringWriter();
var formater = new JsonPropertyFormatter(output);
var token = new ScalarToken(null);
token.Render(formater);
Assert.Equal("null", output.ToString());
}
public void Format_StringScalarToken_SpecialCharactersAreEscaped()
{
var output = new StringWriter();
var formater = new JsonPropertyFormatter(output);
var token = new ScalarToken(" \" ");
token.Render(formater);
Assert.Equal("\" \\\" \"", output.ToString());
}
public void Format_IntScalarToken_IsFormatedAsNumber()
{
var output = new StringWriter();
var formater = new JsonPropertyFormatter(output);
decimal value = Some.Int();
var token = new ScalarToken(value);
token.Render(formater);
Assert.Equal(value.ToString(CultureInfo.InvariantCulture), output.ToString());
}
public void Render_SomeFormatter_FormatterIsCalled()
{
var formatterMock = new Mock <IPropertyFormatter>();
var formatter = formatterMock.Object;
var scalar = new ScalarToken(null);
scalar.Render(formatter);
formatterMock.Verify(m => m.Format(scalar), Times.Once);
}
public void Format_NonFormattableScalarToken_IsFormatedFromToString()
{
var output = new StringWriter();
var formater = new JsonPropertyFormatter(output);
var value = new Nonformatable();
var token = new ScalarToken(value);
token.Render(formater);
Assert.Equal(value.ToString(), output.ToString());
}
public void Format_DecimalScalarToken_IsFormatedUsingSpecificCulture()
{
var formatProvider = new CultureInfo("cs-CZ");
var output = new StringWriter();
var formater = new JsonPropertyFormatter(output, formatProvider);
decimal value = Some.Decimal();
var token = new ScalarToken(value);
token.Render(formater);
Assert.Equal(value.ToString(formatProvider), output.ToString());
}
private void Validate(
ref ScalarToken scalar,
DefinitionInfo definition)
{
switch (scalar.Type)
{
case TokenType.Null:
case TokenType.Boolean:
case TokenType.Number:
case TokenType.String:
var literal = scalar as LiteralToken;
// Legal
if (definition.Get <ScalarDefinition>().Any(x => x.IsMatch(literal)))
{
return;
}
// Not a string, convert
if (literal.Type != TokenType.String)
{
literal = new StringToken(literal.FileId, literal.Line, literal.Column, literal.ToString());
// Legal
if (definition.Get <StringDefinition>().Any(x => x.IsMatch(literal)))
{
scalar = literal;
return;
}
}
// Illegal
m_context.Error(literal, TemplateStrings.UnexpectedValue(literal));
break;
case TokenType.BasicExpression:
// Illegal
if (definition.AllowedContext.Length == 0)
{
m_context.Error(scalar, TemplateStrings.ExpressionNotAllowed());
}
break;
default:
m_context.Error(scalar, TemplateStrings.UnexpectedValue(scalar));
break;
}
}
/// <summary>
/// If supported, convert the provided value into a <see cref="IPropertyToken"/>.
/// </summary>
/// <param name="converter">Converter for conversion of additional values.</param>
/// <param name="value">The value to convert.</param>
/// <param name="result">Value converted to <see cref="IPropertyToken"/> if conversion was successful.</param>
/// <returns><c>true</c> if the value could be converted under this policy; <c>false</c> otherwise.</returns>
public bool TryConvert(IPropertyConverter converter, object value, out IPropertyToken result)
{
result = null;
if (converter == null)
{
throw new ArgumentNullException(nameof(converter));
}
var del = value as Delegate;
if (del == null)
{
return(false);
}
result = new ScalarToken(del.GetMethodInfo().ToString());
return(true);
}
/// <summary>
/// If supported, convert the provided value into a <see cref="IPropertyToken"/>.
/// </summary>
/// <param name="converter">Converter for conversion of additional values.</param>
/// <param name="value">The value to convert.</param>
/// <param name="result">Value converted to <see cref="IPropertyToken"/> if conversion was successful.</param>
/// <returns><c>true</c> if the value could be converted under this policy; <c>false</c> otherwise.</returns>
public bool TryConvert(IPropertyConverter converter, object value, out IPropertyToken result)
{
result = null;
if (converter == null)
{
throw new ArgumentNullException(nameof(converter));
}
// These types and their subclasses are property-laden and deep
// Most of targets will convert them to strings
if (!(value is Type) && !(value is MemberInfo))
{
return(false);
}
result = new ScalarToken(value.ToString());
return(true);
}
/// <summary>
/// If supported, convert the provided value into a <see cref="IPropertyToken"/>.
/// </summary>
/// <param name="converter">Converter for conversion of additional values.</param>
/// <param name="value">The value to convert.</param>
/// <param name="result">Value converted to <see cref="IPropertyToken"/> if conversion was successful.</param>
/// <returns><c>true</c> if the value could be converted under this policy; <c>false</c> otherwise.</returns>
public bool TryConvert(IPropertyConverter converter, object value, out IPropertyToken result)
{
result = null;
if (converter == null)
{
throw new ArgumentNullException(nameof(converter));
}
if (value == null)
{
return(false);
}
if (!value.GetType().GetTypeInfo().IsEnum)
{
return(false);
}
result = new ScalarToken(value);
return(true);
}
/// <summary>
/// If supported, convert the provided value into a <see cref="IPropertyToken"/>.
/// </summary>
/// <param name="converter">Converter for conversion of additional values.</param>
/// <param name="value">The value to convert.</param>
/// <param name="result">Value converted to <see cref="IPropertyToken"/> if conversion was successful.</param>
/// <returns><c>true</c> if the value could be converted under this policy; <c>false</c> otherwise.</returns>
public bool TryConvert(IPropertyConverter converter, object value, out IPropertyToken result)
{
result = null;
if (converter == null)
{
throw new ArgumentNullException(nameof(converter));
}
string text = value as string;
if (text == null)
{
return(false);
}
if (_config.StringLimit > 0 && text.Length > _config.StringLimit)
{
text = text.Substring(0, _config.StringLimit) + "…";
}
result = new ScalarToken(text);
return(true);
}
/// <summary>
/// If supported, convert the provided value into a <see cref="IPropertyToken"/>.
/// </summary>
/// <param name="converter">Converter for conversion of additional values.</param>
/// <param name="value">The value to convert.</param>
/// <param name="result">Value converted to <see cref="IPropertyToken"/> if conversion was successful.</param>
/// <returns><c>true</c> if the value could be converted under this policy; <c>false</c> otherwise.</returns>
public bool TryConvert(IPropertyConverter converter, object value, out IPropertyToken result)
{
result = null;
if (converter == null)
{
throw new ArgumentNullException(nameof(converter));
}
if (value == null)
{
result = new ScalarToken(null);
return(true);
}
#if NET45 || NET46
if (value is DBNull)
{
result = new ScalarToken(null);
return(true);
}
#endif
return(false);
}
public void Render_NullFormatter_ThrowsArgumentNullException()
{
var scalar = new ScalarToken(null);
Assert.Throws <ArgumentNullException>(() => scalar.Render(null));
}