public void EvaluateArrayVariableExpression()
{
Context context = new Context();
context.SetValue("array", new string[] { "one", "two", "three" });
IExpression expression = new IndexedExpression(new VariableExpression("array"), new IExpression[] { new ConstantExpression(1) });
object result = expression.Evaluate(context);
Assert.IsNotNull(result);
Assert.AreEqual("two", result);
}
public void EvaluateArrayDotExpression()
{
Context context = new Context();
DynamicObject data = new DynamicObject();
data.SetValue("Numbers", new string[] { "one", "two", "three" });
context.SetValue("data", data);
IExpression expression = new IndexedExpression(new DotExpression(new VariableExpression("data"), "Numbers"), new IExpression[] { new ConstantExpression(1) });
object result = expression.Evaluate(context);
Assert.IsNotNull(result);
Assert.AreEqual("two", result);
}
private IExpression ParseTermExpression()
{
if (this.TryParse(TokenType.Name, "new"))
return this.ParseNewExpression();
IExpression expression = this.ParseSimpleTermExpression();
while (this.TryParse(TokenType.Delimiter, ".", "[", "("))
{
if (this.TryParse(TokenType.Delimiter, "."))
{
this.lexer.NextToken();
string name = this.ParseName();
IList<IExpression> arguments = null;
if (this.TryParse(TokenType.Delimiter, "("))
arguments = this.ParseArgumentList();
expression = new DotExpression(expression, name, arguments);
continue;
}
if (this.TryParse(TokenType.Delimiter, "("))
{
IList<IExpression> arguments = this.ParseArgumentList();
expression = new InvokeExpression(expression, arguments);
continue;
}
expression = new IndexedExpression(expression, this.ParseArrayArgumentList());
}
return expression;
}