private void Execute(string text)
{
using (Parser parser = new Parser(text))
{
ICommand command = parser.ParseCommand();
Assert.IsNull(parser.ParseCommand());
command.Execute(this.environment);
}
}
private static IExpression ParseExpression(string text)
{
Parser parser = new Parser(text);
IExpression expression = parser.ParseExpression();
Assert.IsNull(parser.ParseExpression());
return expression;
}
private static ICommand ParseCommand(string text)
{
Parser parser = new Parser(text);
ICommand command = parser.ParseCommand();
Assert.IsNull(parser.ParseExpression());
return command;
}
private object Evaluate(string text)
{
using (Parser parser = new Parser(text))
{
IExpression expression = parser.ParseExpression();
Assert.IsNull(parser.ParseExpression());
return expression.Evaluate(this.environment);
}
}
