internal FunctionCalculator CompileCalculation(CalculationSchema schema)
{
_runtimeParameter = Expression.Parameter(typeof(GraspRuntime), "runtime");
var lambdaBody = Visit(schema.Expression);
return new FunctionCalculator(schema.OutputVariable, CompileFunction(lambdaBody));
}
private void EnsureAssignableToOutputVariable(CalculationSchema calculation)
{
if(!calculation.OutputVariable.Type.IsAssignableFrom(calculation.Expression.Type))
{
throw new InvalidCalculationResultTypeException(
calculation.Source,
Resources.InvalidCalculationResultType.FormatInvariant(
calculation.Expression.Type,
calculation,
calculation.OutputVariable.Type,
calculation.OutputVariable));
}
}
private void EnsureVariablesExistInSchema(CalculationSchema calculation)
{
foreach(var variable in calculation.Variables)
{
if(!_variables.Contains(variable))
{
throw new InvalidCalculationVariableException(
variable,
calculation.Source,
_schema,
Resources.InvalidCalculationVariable.FormatInvariant(variable, calculation));
}
}
}
private static ICalculator GetCalculator(CalculationSchema schema)
{
return new CalculationCompiler().CompileCalculation(schema);
}
internal DependencyNode(CalculationSchema calculation, IEnumerable<CalculationSchema> dependencies)
{
Calculation = calculation;
Dependencies = dependencies.ToList().AsReadOnly();
}
private static bool IsDependency(CalculationSchema calculation, CalculationSchema possibleDependency)
{
return calculation.Variables.Contains(possibleDependency.OutputVariable);
}
