public void OnExpression()
{
if (expression_ == null)
{
expression_ = expressions_.Pop();
}
}
public JmesPathFunctionArgument(JmesPathExpression expression)
{
System.Diagnostics.Debug.Assert(expression.IsExpressionType);
token_ = null;
expression_ = expression;
}
private void OnExpression()
{
if (expression_ == null)
{
expression_ = expressions_.Pop();
}
}
public JmesPathFunctionArgument(JToken token)
{
System.Diagnostics.Debug.Assert(token != null);
token_ = token;
expression_ = null;
}
protected virtual void Assert(JmesPathExpression expression, string input, string expected)
{
var json = JmesPath.ParseJson(input);
var result = expression.Transform(json);
var actual = result.AsJToken().AsString();
Xunit.Assert.Equal(expected, actual);
}
public void OnExpressionType()
{
Prolog();
var expression = expressions_.Pop();
JmesPathExpression.MakeExpressionType(expression);
expressions_.Push(expression);
}
public void Visit(JmesPathExpression expression)
{
var projection = expression as JmesPathSliceProjection;
if (projection?.Step != null && projection.Step.Value == 0)
{
throw new Exception("Error: invalid-value, a slice projection step cannot be 0.");
}
}
bool Prolog()
{
if (expression_ != null)
{
expressions_.Push(expression_);
expression_ = null;
return(true);
}
return(false);
}
private void Assert(string[] expressions, string input, string expected)
{
JmesPathExpression expression = null;
foreach (var identifier in expressions)
{
JmesPathExpression ident = new JmesPathIdentifier(identifier);
expression = expression != null
? new JmesPathSubExpression(expression, ident)
: ident
;
}
Assert(expression, input, expected);
}
protected JToken Evaluate(JmesPathExpression expression, JToken token)
{
var eval = expression.Transform(token).AsJToken();
var type = eval.GetTokenType();
if (type != "number" && type != "string")
{
throw new Exception($"Error: invalid-type, the expression argument of function {Name} should return a number or a string.");
}
if (type == "number")
{
return(eval);
}
double number;
if (double.TryParse(eval.Value <string>(), out number))
{
return(new JValue(number));
}
throw new Exception("Error: invalid-type, when evaluating the expression argument of function {Name}, some items could not be cast to a number.");
}
internal Expression(JmesPathExpression expression)
{
expression_ = expression;
}
protected override JmesPathExpression CreateWith(JmesPathExpression left, JmesPathExpression right) => new JmesPathGreaterThanOrEqualOperator(left, right);
/// <summary>
/// Initialize a new instance of the <see cref="JmesPathGreaterThanOrEqualOperator"/> class
/// to perform a comparison between two specified expressions.
/// </summary>
/// <param name="left"></param>
/// <param name="right"></param>
public JmesPathGreaterThanOrEqualOperator(JmesPathExpression left, JmesPathExpression right)
: base(left, right)
{
}
/// <summary>
/// Initialize a new instance of the <see cref="JmesPathLessThanOperator"/> class
/// to perform a comparison between two specified expressions.
/// </summary>
/// <param name="left"></param>
/// <param name="right"></param>
public JmesPathLessThanOperator(JmesPathExpression left, JmesPathExpression right)
: base(left, right)
{
}
internal Expression(JmesPathExpression expression)
{
InnerExpression = expression;
}