/// <inheritdoc />
protected override Result <ICompoundStep, IError> TryCreateInstance(
TypeReference expectedTypeReference,
FreezableStepData freezeData,
TypeResolver typeResolver)
{
var genericTypeParameter = GetGenericTypeParameter(
expectedTypeReference,
freezeData,
typeResolver
);
if (genericTypeParameter.IsFailure)
{
var firstError = genericTypeParameter.Error.GetAllErrors().First();
if (firstError.ErrorBuilder.ErrorCode
== ErrorCode.CannotInferType) //Get a more specific error
{
return(ErrorCode.WrongOutputType.ToErrorBuilder(
TypeName,
OutputTypeExplanation,
expectedTypeReference.Name
)
.WithLocationSingle(firstError.Location));
}
return(genericTypeParameter.ConvertFailure <ICompoundStep>());
}
var result = genericTypeParameter.Value.TryGetType(typeResolver)
.Bind(x => TryCreateGeneric(StepType, x))
.MapError(e => e.WithLocation(freezeData));
return(result);
}
/// <summary>
/// Create a new Freezable Sequence
/// </summary>
public static IFreezableStep CreateFreezableSequence(
IEnumerable <IFreezableStep> steps,
IFreezableStep finalStep,
TextLocation?location)
{
var dict = new StepParameterDict
{
{
new StepParameterReference.Named(nameof(Sequence <object> .InitialSteps)),
new FreezableStepProperty.StepList(steps.ToImmutableList(), location)
},
{
new StepParameterReference.Named(nameof(Sequence <object> .FinalStep)),
new FreezableStepProperty.Step(finalStep, location)
},
};
var fpd = new FreezableStepData(dict, location);
return(new CompoundFreezableStep(
"Sequence",
fpd,
location
));
}
/// <inheritdoc />
public override Result <TypeReference, IError> TryGetOutputTypeReference(
TypeReference expectedTypeReference,
FreezableStepData freezableStepData,
TypeResolver typeResolver) => GetGenericTypeParameter(
expectedTypeReference,
freezableStepData,
typeResolver
)
.Map(GetOutputTypeReference);
/// <inheritdoc />
public override Result <TypeReference, IError> TryGetOutputTypeReference(
TypeReference expectedTypeReference,
FreezableStepData freezableStepData,
TypeResolver typeResolver)
{
var reference = TypeReference.Create(typeof(TOutput));
return(expectedTypeReference
.CheckAllows(reference, StepType, typeResolver)
.MapError(x => x.WithLocation(freezableStepData))
.Map(_ => reference));
}
/// <inheritdoc />
protected override Result <ICompoundStep, IError> TryCreateInstance(
TypeReference expectedTypeReference,
FreezableStepData freezableStepData,
TypeResolver typeResolver)
{
var r = TryGetOutputTypeReference(expectedTypeReference, freezableStepData, typeResolver);
if (r.IsFailure)
{
return(r.ConvertFailure <ICompoundStep>());
}
return(new TStep());
}
/// <summary>
/// Create a new Freezable EntityGetValue
/// </summary>
public static IFreezableStep CreateFreezableArrayAccess(
IFreezableStep entityOrArray,
IFreezableStep indexer,
TextLocation?location)
{
var entityGetValueDict = new StepParameterDict
{
{
new StepParameterReference.Named(nameof(EntityGetValue <int> .Entity)),
new FreezableStepProperty.Step(entityOrArray, location)
},
{
new StepParameterReference.Named(nameof(EntityGetValue <int> .Property)),
new FreezableStepProperty.Step(indexer, location)
},
};
var entityGetValueData = new FreezableStepData(entityGetValueDict, location);
var entityGetValueStep = new CompoundFreezableStep(
"EntityGetValue",
entityGetValueData,
location
);
var elementAtIndexDict = new StepParameterDict
{
{
new StepParameterReference.Named(nameof(ElementAtIndex <object> .Array)),
new FreezableStepProperty.Step(entityOrArray, location)
},
{
new StepParameterReference.Named(nameof(ElementAtIndex <object> .Index)),
new FreezableStepProperty.Step(indexer, location)
},
};
var elementAtData = new FreezableStepData(elementAtIndexDict, location);
var elementAtStep = new CompoundFreezableStep(
"ElementAtIndex",
elementAtData,
location
);
var result = new OptionFreezableStep(new[] { entityGetValueStep, elementAtStep }, location);
return(result);
}
/// <summary>
/// Create a freezable Not step.
/// </summary>
public static IFreezableStep CreateFreezableNot(IFreezableStep boolean, TextLocation location)
{
var dict = new StepParameterDict
{
{
new StepParameterReference.Named(nameof(Not.Boolean)),
new FreezableStepProperty.Step(boolean, location)
},
};
var fpd = new FreezableStepData(dict, location);
var step = new CompoundFreezableStep(nameof(Not), fpd, location);
return(step);
}
/// <summary>
/// Create a new Freezable Interpolated string
/// </summary>
public static IFreezableStep CreateFreezableInterpolatedString(
IEnumerable <IFreezableStep> steps,
TextLocation?location)
{
var dict = new StepParameterDict
{
{
new StepParameterReference.Named(nameof(StringInterpolate.Strings)),
new FreezableStepProperty.StepList(steps.ToImmutableList(), location)
},
};
var fpd = new FreezableStepData(dict, location);
return(new CompoundFreezableStep(
nameof(StringInterpolate),
fpd,
location
));
}
/// <summary>
/// Create a new Freezable Array
/// </summary>
public static IFreezableStep CreateFreezableList(
ImmutableList <IFreezableStep> elements,
TextLocation?location)
{
var dict = new StepParameterDict
{
{
new StepParameterReference.Named(nameof(ArrayNew <object> .Elements)),
new FreezableStepProperty.StepList(elements, location)
}
};
var fpd = new FreezableStepData(dict, location);
return(new CompoundFreezableStep(
"ArrayNew",
fpd,
location
));
}
/// <summary>
/// Create a freezable GetVariable step.
/// </summary>
public static IFreezableStep CreateFreezableGetVariable(
VariableName variableName,
TextLocation?location)
{
var dict = new StepParameterDict
{
{
new StepParameterReference.Named(nameof(GetVariable <object> .Variable)),
new FreezableStepProperty.Variable(variableName, location)
}
};
var fpd = new FreezableStepData(dict, location);
var step = new CompoundFreezableStep(
"GetVariable",
fpd,
location
);
return(step);
}
/// <summary>
/// Create a freezable GetVariable step.
/// </summary>
public static IFreezableStep CreateFreezableSetVariable(
FreezableStepProperty variableName,
FreezableStepProperty value,
TextLocation location)
{
var dict = new StepParameterDict
{
{
new StepParameterReference.Named(nameof(SetVariable <object> .Variable)), variableName
},
{ new StepParameterReference.Named(nameof(SetVariable <object> .Value)), value },
};
var fpd = new FreezableStepData(dict, location);
var step = new CompoundFreezableStep(
"SetVariable",
fpd,
location
);
return(step);
}
/// <inheritdoc />
protected override Result <TypeReference, IError> GetGenericTypeParameter(
TypeReference expectedTypeReference,
FreezableStepData freezableStepData,
TypeResolver typeResolver)
{
var expectedMemberTypeReference =
GetExpectedArrayTypeReference(expectedTypeReference)
.MapError(x => x.WithLocation(freezableStepData));
if (expectedMemberTypeReference.IsFailure)
{
return(expectedMemberTypeReference.ConvertFailure <TypeReference>());
}
var step = freezableStepData.TryGetStep(ArrayPropertyName, StepType);
if (step.IsFailure)
{
return(step.ConvertFailure <TypeReference>());
}
var outputTypeReference = step.Value.TryGetOutputTypeReference(
expectedMemberTypeReference.Value,
typeResolver
);
if (outputTypeReference.IsFailure)
{
return(outputTypeReference.ConvertFailure <TypeReference>());
}
var arrayMemberType = outputTypeReference.Value
.TryGetArrayMemberTypeReference(typeResolver)
.MapError(e => e.WithLocation(freezableStepData));
return(arrayMemberType);
}
/// <summary>
/// Gets the type
/// </summary>
protected abstract Result <TypeReference, IError> GetGenericTypeParameter(
TypeReference expectedTypeReference,
FreezableStepData freezableStepData,
TypeResolver typeResolver);
/// <summary>
/// Try to create an infix step
/// </summary>
public static Result <FreezableStepProperty, IError> TryCreateStep(
TextLocation textLocation,
string op,
IReadOnlyList <Result <FreezableStepProperty, IError> > terms)
{
List <IError> errors = new();
List <FreezableStepProperty> properties = new();
foreach (var result in terms)
{
if (result.IsFailure)
{
errors.Add(result.Error);
}
else
{
properties.Add(result.Value);
}
}
if (errors.Any())
{
return(Result.Failure <FreezableStepProperty, IError>(ErrorList.Combine(errors)));
}
var operatorData = OperatorLookup[op].ToList();
if (!operatorData.Any())
{
return(new SingleError(
textLocation,
ErrorCode.CouldNotParse,
op,
"Operator"
));
}
List <IFreezableStep> freezableSteps = new();
foreach (var(_, stepName, termsName) in operatorData)
{
var stepParameterDict = new StepParameterDict()
{
{
new StepParameterReference.Named(termsName), new FreezableStepProperty.StepList(
properties.Select(x => x.ConvertToStep()).ToImmutableList(),
textLocation
)
}
};
var data = new FreezableStepData(
stepParameterDict,
textLocation
);
var step = new CompoundFreezableStep(stepName, data, textLocation);
freezableSteps.Add(step);
}
if (freezableSteps.Count == 1)
{
return(new FreezableStepProperty.Step(freezableSteps.Single(), textLocation));
}
var alt = new OptionFreezableStep(freezableSteps, textLocation);
return(new FreezableStepProperty.Step(alt, textLocation));
}