public ExpressionEvaluatorFacade()
{
compiler = new ReportingLanguageCompiler();
this.context = new ExpressionContext(null);
context.ResolveUnknownVariable += VariableStore;
context.ResolveMissingFunction += FunctionStore;
}
public void Can_Compile_Uknown_Variable()
{
const string expression = "varName";
var compiler = new ReportingLanguageCompiler();
IExpression compiled = compiler.CompileExpression<string>(expression);
var context = new ExpressionContext(null);
context.ResolveUnknownVariable += (sender, args) =>
{
Assert.That(args.VariableName, Is.EqualTo("varName"));
args.VariableValue = 123.456;
};
Assert.That(compiled.Evaluate(context), Is.EqualTo("123,456"));
}
public void Can_Compile_Qualified_Name()
{
const string expression = "hello.goodbye.darlin.boy";
var compiler = new ReportingLanguageCompiler();
IExpression expr = compiler.CompileExpression<string>(expression);
var context = new ExpressionContext(null);
context.ResolveUnknownQualifiedName += (sender, args) =>
{
Assert.That(args.QualifiedName.Length, Is.EqualTo(4));
Assert.That(args.QualifiedName[0], Is.EqualTo("hello"));
Assert.That(args.QualifiedName[1], Is.EqualTo("goodbye"));
Assert.That(args.QualifiedName[2], Is.EqualTo("darlin"));
Assert.That(args.QualifiedName[3], Is.EqualTo("boy"));
args.Value = "GitErDone";
};
Assert.That(expr.Evaluate(context), Is.EqualTo("GitErDone"));
}