protected void AssertAreEquivalent(MvxSerializableBindingDescription expected,
MvxSerializableBindingDescription actual)
{
Assert.AreEqual(expected.Converter, actual.Converter);
Assert.AreEqual(expected.ConverterParameter, actual.ConverterParameter);
Assert.AreEqual(expected.FallbackValue, actual.FallbackValue);
Assert.AreEqual(expected.Mode, actual.Mode);
Assert.AreEqual(expected.Path, actual.Path);
}
public bool TryParseBindingDescription(string text, out MvxSerializableBindingDescription requestedDescription)
{
try
{
Reset(text);
requestedDescription = this.ParseBindingDescription();
return true;
}
catch (Exception exception)
{
MvxBindingTrace.Trace(MvxTraceLevel.Error,
"Problem parsing Lang binding {0}", exception.ToLongString());
requestedDescription = null;
return false;
}
}
protected void AssertAreEquivalent(MvxSerializableBindingDescription expected,
MvxSerializableBindingDescription actual)
{
Assert.AreEqual(expected.Converter, actual.Converter);
Assert.AreEqual(expected.ConverterParameter, actual.ConverterParameter);
Assert.AreEqual(expected.FallbackValue, actual.FallbackValue);
Assert.AreEqual(expected.Mode, actual.Mode);
Assert.AreEqual(expected.Path, actual.Path);
Assert.AreEqual(expected.Function, actual.Function);
Assert.AreEqual(expected.Literal, actual.Literal);
if (expected.Sources == null)
Assert.IsNull(actual.Sources);
else
{
Assert.AreEqual(expected.Sources.Count, actual.Sources.Count);
for (var i = 0; i < expected.Sources.Count; i++)
AssertAreEquivalent(expected.Sources[i], actual.Sources[i]);
}
}
private void DoTest(KeyValuePair<string, MvxSerializableBindingSpecification> testPair)
{
var language = new MvxLanguageBindingParser();
MvxSerializableBindingSpecification result;
var parsed = language.TryParseBindingSpecification(testPair.Key, out result);
Assert.IsTrue(parsed, "Failed to parse " + testPair.Key);
Assert.AreEqual(1, result.Count);
var keyAndDescription = testPair.Value.First();
var resultKeyAndDescription = result.First();
var expectedDescription = new MvxSerializableBindingDescription()
{
Path = keyAndDescription.Value.Path ?? "TextSource",
Converter = keyAndDescription.Value.Converter ?? "Language",
ConverterParameter = keyAndDescription.Value.ConverterParameter,
FallbackValue = keyAndDescription.Value.FallbackValue,
Mode = MvxBindingMode.OneTime
};
Assert.AreEqual(keyAndDescription.Key, resultKeyAndDescription.Key);
AssertAreEquivalent(expectedDescription, resultKeyAndDescription.Value);
}
private MvxSourceStepDescription SourceStepDescriptionFrom(MvxSerializableBindingDescription description)
{
if (description.Path != null)
{
return(new MvxPathSourceStepDescription()
{
SourcePropertyPath = description.Path,
Converter = FindConverter(description.Converter),
ConverterParameter = description.ConverterParameter,
FallbackValue = description.FallbackValue
});
}
if (description.Literal != null)
{
var literal = description.Literal;
if (literal == MvxTibetBindingParser.LiteralNull)
{
literal = null;
}
return(new MvxLiteralSourceStepDescription()
{
Literal = literal,
Converter = FindConverter(description.Converter),
ConverterParameter = description.ConverterParameter,
FallbackValue = description.FallbackValue
});
}
if (description.Function != null)
{
// first look for a combiner with the name
var combiner = FindCombiner(description.Function);
if (combiner != null)
{
return(new MvxCombinerSourceStepDescription()
{
Combiner = combiner,
InnerSteps = description.Sources == null
? new List <MvxSourceStepDescription>() :
description.Sources.Select(s => SourceStepDescriptionFrom(s)).ToList(),
Converter = FindConverter(description.Converter),
ConverterParameter = description.ConverterParameter,
FallbackValue = description.FallbackValue
});
}
else
{
// no combiner, then drop back to looking for a converter
var converter = FindConverter(description.Function);
if (converter == null)
{
MvxBindingTrace.Error("Failed to find combiner or converter for {0}", description.Function);
}
if (description.Sources == null || description.Sources.Count == 0)
{
MvxBindingTrace.Error("Value Converter {0} supplied with no source", description.Function);
return(new MvxLiteralSourceStepDescription()
{
Literal = null,
});
}
else if (description.Sources.Count > 2)
{
MvxBindingTrace.Error("Value Converter {0} supplied with too many parameters - {1}", description.Function, description.Sources.Count);
return(new MvxLiteralSourceStepDescription()
{
Literal = null,
});
}
else
{
return(new MvxCombinerSourceStepDescription()
{
Combiner = new MvxValueConverterValueCombiner(converter),
InnerSteps = description.Sources.Select(source => SourceStepDescriptionFrom(source)).ToList(),
Converter = FindConverter(description.Converter),
ConverterParameter = description.ConverterParameter,
FallbackValue = description.FallbackValue
});
}
}
}
// this probably suggests that the path is the entire source object
return(new MvxPathSourceStepDescription()
{
SourcePropertyPath = null,
Converter = FindConverter(description.Converter),
ConverterParameter = description.ConverterParameter,
FallbackValue = description.FallbackValue
});
}
public MvxBindingDescription SerializableBindingToBinding(string targetName,
MvxSerializableBindingDescription description)
{
return new MvxBindingDescription
{
TargetName = targetName,
SourcePropertyPath = description.Path,
Converter = FindConverter(description.Converter),
ConverterParameter = description.ConverterParameter,
Mode = description.Mode,
FallbackValue = description.FallbackValue
};
}
private MvxSourceStepDescription SourceStepDescriptionFrom(MvxSerializableBindingDescription description)
{
if (description.Path != null)
{
return new MvxPathSourceStepDescription()
{
SourcePropertyPath = description.Path,
Converter = FindConverter(description.Converter),
ConverterParameter = description.ConverterParameter,
FallbackValue = description.FallbackValue
};
}
if (description.Literal != null)
{
var literal = description.Literal;
if (literal == MvxTibetBindingParser.LiteralNull)
literal = null;
return new MvxLiteralSourceStepDescription()
{
Literal = literal,
Converter = FindConverter(description.Converter),
ConverterParameter = description.ConverterParameter,
FallbackValue = description.FallbackValue
};
}
if (description.Function != null)
{
// first look for a combiner with the name
var combiner = FindCombiner(description.Function);
if (combiner != null)
{
return new MvxCombinerSourceStepDescription()
{
Combiner = combiner,
InnerSteps = description.Sources == null
? new List<MvxSourceStepDescription>() :
description.Sources.Select(s => SourceStepDescriptionFrom(s)).ToList(),
Converter = FindConverter(description.Converter),
ConverterParameter = description.ConverterParameter,
FallbackValue = description.FallbackValue
};
}
else
{
// no combiner, then drop back to looking for a converter
var converter = FindConverter(description.Function);
if (converter == null)
{
MvxBindingTrace.Error("Failed to find combiner or converter for {0}", description.Function);
}
if (description.Sources == null || description.Sources.Count == 0)
{
MvxBindingTrace.Error("Value Converter {0} supplied with no source", description.Function);
return new MvxLiteralSourceStepDescription()
{
Literal = null,
};
}
else if (description.Sources.Count > 2)
{
MvxBindingTrace.Error("Value Converter {0} supplied with too many parameters - {1}", description.Function, description.Sources.Count);
return new MvxLiteralSourceStepDescription()
{
Literal = null,
};
}
else
{
return new MvxCombinerSourceStepDescription()
{
Combiner = new MvxValueConverterValueCombiner(converter),
InnerSteps = description.Sources.Select(source => SourceStepDescriptionFrom(source)).ToList(),
Converter = FindConverter(description.Converter),
ConverterParameter = description.ConverterParameter,
FallbackValue = description.FallbackValue
};
}
}
}
// this probably suggests that the path is the entire source object
return new MvxPathSourceStepDescription()
{
SourcePropertyPath = null,
Converter = FindConverter(description.Converter),
ConverterParameter = description.ConverterParameter,
FallbackValue = description.FallbackValue
};
}
public MvxBindingDescription SerializableBindingToBinding(string targetName,
MvxSerializableBindingDescription description)
{
return new MvxBindingDescription
{
TargetName = targetName,
Source = SourceStepDescriptionFrom(description),
Mode = description.Mode,
};
}