| #region License |
| |
| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| #endregion |
| |
| using System; |
| using System.Collections.Generic; |
| using System.Dynamic; |
| using System.Linq; |
| using System.Reflection; |
| using Gremlin.Net.Process.Traversal; |
| |
| namespace Gremlin.Net.IntegrationTest.Gherkin.TraversalEvaluation |
| { |
| /// <summary> |
| /// Represents a parameter for a traversal predicate (ie: P.gt()) |
| /// </summary> |
| internal class PParameter : ITokenParameter, IEquatable<PParameter> |
| { |
| private IDictionary<string, object> _contextParameterValues; |
| public IList<Token> Tokens { get; } |
| |
| public PParameter(IList<Token> tokens) |
| { |
| Tokens = tokens; |
| } |
| |
| public bool Equals(PParameter other) |
| { |
| return Tokens.SequenceEqual(other.Tokens); |
| } |
| |
| public override bool Equals(object obj) |
| { |
| if (ReferenceEquals(null, obj)) return false; |
| if (ReferenceEquals(this, obj)) return true; |
| if (obj.GetType() != GetType()) return false; |
| return Equals((PParameter) obj); |
| } |
| |
| public override int GetHashCode() |
| { |
| return Tokens != null ? Tokens.GetHashCode() : 0; |
| } |
| |
| public object GetValue() |
| { |
| var type = typeof(P); |
| object instance = null; |
| for (var i = 1; i < Tokens.Count; i++) |
| { |
| var token = Tokens[i]; |
| token.SetContextParameterValues(_contextParameterValues); |
| var method = type.GetMethod(TraversalParser.GetCsharpName(token.Name), |
| BindingFlags.Static | BindingFlags.Instance | BindingFlags.Public); |
| if (method == null) |
| { |
| throw new InvalidOperationException($"Predicate (P) method '{token}' not found for testing"); |
| } |
| |
| var parameters = method.IsStatic |
| ? new object[] {token.Parameters.Select(p => p.GetValue()).ToArray()} |
| : token.Parameters.Select(p => p.GetValue()).ToArray(); |
| instance = method.Invoke(instance, parameters); |
| } |
| return instance; |
| } |
| |
| public Type GetParameterType() |
| { |
| return typeof(P); |
| } |
| |
| public void SetContextParameterValues(IDictionary<string, object> parameterValues) |
| { |
| _contextParameterValues = parameterValues; |
| } |
| } |
| } |