File: Patterns\RoutePatternParserTest.cs
Web Access
Project: src\src\Http\Routing\test\UnitTests\Microsoft.AspNetCore.Routing.Tests.csproj (Microsoft.AspNetCore.Routing.Tests)
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
using System.Diagnostics;
using Microsoft.AspNetCore.InternalTesting;
using static Microsoft.AspNetCore.Routing.Patterns.RoutePatternFactory;
 
namespace Microsoft.AspNetCore.Routing.Patterns;
 
public class RoutePatternParameterParserTest
{
    [Fact]
    public void Parse_SingleLiteral()
    {
        // Arrange
        var template = "cool";
 
        var expected = Pattern(
            template,
            Segment(LiteralPart("cool")));
 
        // Act
        var actual = RoutePatternParser.Parse(template);
 
        // Assert
        Assert.Equal<RoutePattern>(expected, actual, new RoutePatternEqualityComparer());
    }
 
    [Fact]
    public void Parse_SingleParameter()
    {
        // Arrange
        var template = "{p}";
 
        var expected = Pattern(template, Segment(ParameterPart("p")));
 
        // Act
        var actual = RoutePatternParser.Parse(template);
 
        // Assert
        Assert.Equal<RoutePattern>(expected, actual, new RoutePatternEqualityComparer());
    }
 
    [Fact]
    public void Parse_OptionalParameter()
    {
        // Arrange
        var template = "{p?}";
 
        var expected = Pattern(template, Segment(ParameterPart("p", null, RoutePatternParameterKind.Optional)));
 
        // Act
        var actual = RoutePatternParser.Parse(template);
 
        // Assert
        Assert.Equal<RoutePattern>(expected, actual, new RoutePatternEqualityComparer());
    }
 
    [Fact]
    public void Parse_MultipleLiterals()
    {
        // Arrange
        var template = "cool/awesome/super";
 
        var expected = Pattern(
            template,
            Segment(LiteralPart("cool")),
            Segment(LiteralPart("awesome")),
            Segment(LiteralPart("super")));
 
        // Act
        var actual = RoutePatternParser.Parse(template);
 
        // Assert
        Assert.Equal<RoutePattern>(expected, actual, new RoutePatternEqualityComparer());
    }
 
    [Fact]
    public void Parse_MultipleParameters()
    {
        // Arrange
        var template = "{p1}/{p2}/{*p3}";
 
        var expected = Pattern(
            template,
            Segment(ParameterPart("p1")),
            Segment(ParameterPart("p2")),
            Segment(ParameterPart("p3", null, RoutePatternParameterKind.CatchAll)));
 
        // Act
        var actual = RoutePatternParser.Parse(template);
 
        // Assert
        Assert.Equal<RoutePattern>(expected, actual, new RoutePatternEqualityComparer());
    }
 
    [Fact]
    public void Parse_ComplexSegment_LP()
    {
        // Arrange
        var template = "cool-{p1}";
 
        var expected = Pattern(
            template,
            Segment(
                LiteralPart("cool-"),
                ParameterPart("p1")));
 
        // Act
        var actual = RoutePatternParser.Parse(template);
 
        // Assert
        Assert.Equal<RoutePattern>(expected, actual, new RoutePatternEqualityComparer());
    }
 
    [Fact]
    public void Parse_ComplexSegment_PL()
    {
        // Arrange
        var template = "{p1}-cool";
 
        var expected = Pattern(
            template,
            Segment(
                ParameterPart("p1"),
                LiteralPart("-cool")));
 
        // Act
        var actual = RoutePatternParser.Parse(template);
 
        // Assert
        Assert.Equal<RoutePattern>(expected, actual, new RoutePatternEqualityComparer());
    }
 
    [Fact]
    public void Parse_ComplexSegment_PLP()
    {
        // Arrange
        var template = "{p1}-cool-{p2}";
 
        var expected = Pattern(
            template,
            Segment(
                ParameterPart("p1"),
                LiteralPart("-cool-"),
                ParameterPart("p2")));
 
        // Act
        var actual = RoutePatternParser.Parse(template);
 
        // Assert
        Assert.Equal<RoutePattern>(expected, actual, new RoutePatternEqualityComparer());
    }
 
    [Fact]
    public void Parse_ComplexSegment_LPL()
    {
        // Arrange
        var template = "cool-{p1}-awesome";
 
        var expected = Pattern(
            template,
            Segment(
                LiteralPart("cool-"),
                ParameterPart("p1"),
                LiteralPart("-awesome")));
 
        // Act
        var actual = RoutePatternParser.Parse(template);
 
        // Assert
        Assert.Equal<RoutePattern>(expected, actual, new RoutePatternEqualityComparer());
    }
 
    [Fact]
    public void Parse_ComplexSegment_OptionalParameterFollowingPeriod()
    {
        // Arrange
        var template = "{p1}.{p2?}";
 
        var expected = Pattern(
            template,
            Segment(
                ParameterPart("p1"),
                SeparatorPart("."),
                ParameterPart("p2", null, RoutePatternParameterKind.Optional)));
 
        // Act
        var actual = RoutePatternParser.Parse(template);
 
        // Assert
        Assert.Equal<RoutePattern>(expected, actual, new RoutePatternEqualityComparer());
    }
 
    [Fact]
    public void Parse_ComplexSegment_ParametersFollowingPeriod()
    {
        // Arrange
        var template = "{p1}.{p2}";
 
        var expected = Pattern(
            template,
            Segment(
                ParameterPart("p1"),
                LiteralPart("."),
                ParameterPart("p2")));
 
        // Act
        var actual = RoutePatternParser.Parse(template);
 
        // Assert
        Assert.Equal<RoutePattern>(expected, actual, new RoutePatternEqualityComparer());
    }
 
    [Fact]
    public void Parse_ComplexSegment_OptionalParameterFollowingPeriod_ThreeParameters()
    {
        // Arrange
        var template = "{p1}.{p2}.{p3?}";
 
        var expected = Pattern(
            template,
            Segment(
                ParameterPart("p1"),
                LiteralPart("."),
                ParameterPart("p2"),
                SeparatorPart("."),
                ParameterPart("p3", null, RoutePatternParameterKind.Optional)));
 
        // Act
        var actual = RoutePatternParser.Parse(template);
 
        // Assert
        Assert.Equal<RoutePattern>(expected, actual, new RoutePatternEqualityComparer());
    }
 
    [Fact]
    public void Parse_ComplexSegment_ThreeParametersSeparatedByPeriod()
    {
        // Arrange
        var template = "{p1}.{p2}.{p3}";
 
        var expected = Pattern(
            template,
            Segment(
                ParameterPart("p1"),
                LiteralPart("."),
                ParameterPart("p2"),
                LiteralPart("."),
                ParameterPart("p3")));
 
        // Act
        var actual = RoutePatternParser.Parse(template);
 
        // Assert
        Assert.Equal<RoutePattern>(expected, actual, new RoutePatternEqualityComparer());
    }
 
    [Fact]
    public void Parse_ComplexSegment_OptionalParameterFollowingPeriod_MiddleSegment()
    {
        // Arrange
        var template = "{p1}.{p2?}/{p3}";
 
        var expected = Pattern(
            template,
            Segment(
                ParameterPart("p1"),
                SeparatorPart("."),
                ParameterPart("p2", null, RoutePatternParameterKind.Optional)),
            Segment(
                ParameterPart("p3")));
 
        // Act
        var actual = RoutePatternParser.Parse(template);
 
        // Assert
        Assert.Equal<RoutePattern>(expected, actual, new RoutePatternEqualityComparer());
    }
 
    [Fact]
    public void Parse_ComplexSegment_OptionalParameterFollowingPeriod_LastSegment()
    {
        // Arrange
        var template = "{p1}/{p2}.{p3?}";
 
        var expected = Pattern(
            template,
            Segment(
                ParameterPart("p1")),
            Segment(
                ParameterPart("p2"),
                SeparatorPart("."),
                ParameterPart("p3", null, RoutePatternParameterKind.Optional)));
 
        // Act
        var actual = RoutePatternParser.Parse(template);
 
        // Assert
        Assert.Equal<RoutePattern>(expected, actual, new RoutePatternEqualityComparer());
    }
 
    [Fact]
    public void Parse_ComplexSegment_OptionalParameterFollowingPeriod_PeriodAfterSlash()
    {
        // Arrange
        var template = "{p2}/.{p3?}";
 
        var expected = Pattern(
            template,
            Segment(ParameterPart("p2")),
            Segment(
                SeparatorPart("."),
                ParameterPart("p3", null, RoutePatternParameterKind.Optional)));
 
        // Act
        var actual = RoutePatternParser.Parse(template);
 
        // Assert
        Assert.Equal<RoutePattern>(expected, actual, new RoutePatternEqualityComparer());
    }
 
    [Theory]
    [InlineData(@"{p1:regex(^\d{{3}}-\d{{3}}-\d{{4}}$)}", @"regex(^\d{3}-\d{3}-\d{4}$)")] // ssn
    [InlineData(@"{p1:regex(^\d{{1,2}}\/\d{{1,2}}\/\d{{4}}$)}", @"regex(^\d{1,2}\/\d{1,2}\/\d{4}$)")] // date
    [InlineData(@"{p1:regex(^\w+\@\w+\.\w+)}", @"regex(^\w+\@\w+\.\w+)")] // email
    [InlineData(@"{p1:regex(([}}])\w+)}", @"regex(([}])\w+)")] // Not balanced }
    [InlineData(@"{p1:regex(([{{(])\w+)}", @"regex(([{(])\w+)")] // Not balanced {
    public void Parse_RegularExpressions(string template, string constraint)
    {
        // Arrange
        var expected = Pattern(
            template,
            Segment(
                ParameterPart(
                    "p1",
                    null,
                    RoutePatternParameterKind.Standard,
                    Constraint(constraint))));
 
        // Act
        var actual = RoutePatternParser.Parse(template);
 
        // Assert
        Assert.Equal<RoutePattern>(expected, actual, new RoutePatternEqualityComparer());
    }
 
    [Theory]
    [InlineData(@"{p1:regex(^\d{{3}}-\d{{3}}-\d{{4}}}$)}")] // extra }
    [InlineData(@"{p1:regex(^\d{{3}}-\d{{3}}-\d{{4}}$)}}")] // extra } at the end
    [InlineData(@"{{p1:regex(^\d{{3}}-\d{{3}}-\d{{4}}$)}")] // extra { at the beginning
    [InlineData(@"{p1:regex(([}])\w+}")] // Not escaped }
    [InlineData(@"{p1:regex(^\d{{3}}-\d{{3}}-\d{{4}$)}")] // Not escaped }
    [InlineData(@"{p1:regex(abc)")]
    public void Parse_RegularExpressions_Invalid(string template)
    {
        // Act and Assert
        ExceptionAssert.Throws<RoutePatternException>(
            () => RoutePatternParser.Parse(template),
            "There is an incomplete parameter in the route template. Check that each '{' character has a matching " +
            "'}' character.");
    }
 
    [Theory]
    [InlineData(@"{p1:regex(^\d{{3}}-\d{{3}}-\d{{{4}}$)}")] // extra {
    [InlineData(@"{p1:regex(^\d{{3}}-\d{{3}}-\d{4}}$)}")] // Not escaped {
    public void Parse_RegularExpressions_Unescaped(string template)
    {
        // Act and Assert
        ExceptionAssert.Throws<RoutePatternException>(
            () => RoutePatternParser.Parse(template),
            "In a route parameter, '{' and '}' must be escaped with '{{' and '}}'.");
    }
 
    [Theory]
    [InlineData("{p1}.{p2?}.{p3}", "p2", ".")]
    [InlineData("{p1?}{p2}", "p1", "{p2}")]
    [InlineData("{p1?}{p2?}", "p1", "{p2?}")]
    [InlineData("{p1}.{p2?})", "p2", ")")]
    [InlineData("{foorb?}-bar-{z}", "foorb", "-bar-")]
    public void Parse_ComplexSegment_OptionalParameter_NotTheLastPart(
        string template,
        string parameter,
        string invalid)
    {
        // Act and Assert
        ExceptionAssert.Throws<RoutePatternException>(
            () => RoutePatternParser.Parse(template),
            "An optional parameter must be at the end of the segment. In the segment '" + template +
            "', optional parameter '" + parameter + "' is followed by '" + invalid + "'.");
    }
 
    [Theory]
    [InlineData("{p1}-{p2?}", "-")]
    [InlineData("{p1}..{p2?}", "..")]
    [InlineData("..{p2?}", "..")]
    [InlineData("{p1}.abc.{p2?}", ".abc.")]
    [InlineData("{p1}{p2?}", "{p1}")]
    public void Parse_ComplexSegment_OptionalParametersSeparatedByPeriod_Invalid(string template, string parameter)
    {
        // Act and Assert
        ExceptionAssert.Throws<RoutePatternException>(
            () => RoutePatternParser.Parse(template),
            "In the segment '" + template + "', the optional parameter 'p2' is preceded by an invalid " +
            "segment '" + parameter + "'. Only a period (.) can precede an optional parameter.");
    }
 
    [Fact]
    public void InvalidTemplate_WithRepeatedParameter()
    {
        var ex = ExceptionAssert.Throws<RoutePatternException>(
            () => RoutePatternParser.Parse("{Controller}.mvc/{id}/{controller}"),
            "The route parameter name 'controller' appears more than one time in the route template.");
    }
 
    [Theory]
    [InlineData("123{a}abc{")]
    [InlineData("123{a}abc}")]
    [InlineData("xyz}123{a}abc}")]
    [InlineData("{{p1}")]
    [InlineData("{p1}}")]
    [InlineData("p1}}p2{")]
    public void InvalidTemplate_WithMismatchedBraces(string template)
    {
        ExceptionAssert.Throws<RoutePatternException>(
            () => RoutePatternParser.Parse(template),
            @"There is an incomplete parameter in the route template. Check that each '{' character has a " +
            "matching '}' character.");
    }
 
    [Fact]
    public void InvalidTemplate_CannotHaveCatchAllInMultiSegment()
    {
        ExceptionAssert.Throws<RoutePatternException>(
            () => RoutePatternParser.Parse("123{a}abc{*moo}"),
            "A path segment that contains more than one section, such as a literal section or a parameter, " +
            "cannot contain a catch-all parameter.");
    }
 
    [Fact]
    public void InvalidTemplate_CannotHaveMoreThanOneCatchAll()
    {
        ExceptionAssert.Throws<RoutePatternException>(
            () => RoutePatternParser.Parse("{*p1}/{*p2}"),
            "A catch-all parameter can only appear as the last segment of the route template.");
    }
 
    [Fact]
    public void InvalidTemplate_CannotHaveMoreThanOneCatchAllInMultiSegment()
    {
        ExceptionAssert.Throws<RoutePatternException>(
            () => RoutePatternParser.Parse("{*p1}abc{*p2}"),
            "A path segment that contains more than one section, such as a literal section or a parameter, " +
            "cannot contain a catch-all parameter.");
    }
 
    [Fact]
    public void InvalidTemplate_CannotHaveCatchAllWithNoName()
    {
        ExceptionAssert.Throws<RoutePatternException>(
            () => RoutePatternParser.Parse("foo/{*}"),
            "The route parameter name '' is invalid. Route parameter names must be non-empty and cannot" +
            " contain these characters: '{', '}', '/'. The '?' character marks a parameter as optional," +
            " and can occur only at the end of the parameter. The '*' character marks a parameter as catch-all," +
            " and can occur only at the start of the parameter.");
    }
 
    [Theory]
    [InlineData("{a*}", "a*")]
    [InlineData("{*a*}", "a*")]
    [InlineData("{*a*:int}", "a*")]
    [InlineData("{*a*=5}", "a*")]
    [InlineData("{*a*b=5}", "a*b")]
    [InlineData("{p1?}.{p2/}/{p3}", "p2/")]
    [InlineData("{p{{}", "p{")]
    [InlineData("{p}}}", "p}")]
    [InlineData("{p/}", "p/")]
    public void ParseRouteParameter_ThrowsIf_ParameterContainsSpecialCharacters(
        string template,
        string parameterName)
    {
        // Arrange
        var expectedMessage = "The route parameter name '" + parameterName + "' is invalid. Route parameter " +
            "names must be non-empty and cannot contain these characters: '{', '}', '/'. The '?' character " +
            "marks a parameter as optional, and can occur only at the end of the parameter. The '*' character " +
            "marks a parameter as catch-all, and can occur only at the start of the parameter.";
 
        // Act & Assert
        ExceptionAssert.Throws<RoutePatternException>(() => RoutePatternParser.Parse(template), expectedMessage);
    }
 
    [Fact]
    public void InvalidTemplate_CannotHaveConsecutiveOpenBrace()
    {
        ExceptionAssert.Throws<RoutePatternException>(
            () => RoutePatternParser.Parse("foo/{{p1}"),
            "There is an incomplete parameter in the route template. Check that each '{' character has a " +
            "matching '}' character.");
    }
 
    [Fact]
    public void InvalidTemplate_CannotHaveConsecutiveCloseBrace()
    {
        ExceptionAssert.Throws<RoutePatternException>(
            () => RoutePatternParser.Parse("foo/{p1}}"),
            "There is an incomplete parameter in the route template. Check that each '{' character has a " +
            "matching '}' character.");
    }
 
    [Fact]
    public void InvalidTemplate_SameParameterTwiceThrows()
    {
        ExceptionAssert.Throws<RoutePatternException>(
            () => RoutePatternParser.Parse("{aaa}/{AAA}"),
            "The route parameter name 'AAA' appears more than one time in the route template.");
    }
 
    [Fact]
    public void InvalidTemplate_SameParameterTwiceAndOneCatchAllThrows()
    {
        ExceptionAssert.Throws<RoutePatternException>(
            () => RoutePatternParser.Parse("{aaa}/{*AAA}"),
            "The route parameter name 'AAA' appears more than one time in the route template.");
    }
 
    [Fact]
    public void InvalidTemplate_InvalidParameterNameWithCloseBracketThrows()
    {
        ExceptionAssert.Throws<RoutePatternException>(
            () => RoutePatternParser.Parse("{a}/{aa}a}/{z}"),
            "There is an incomplete parameter in the route template. Check that each '{' character has a " +
            "matching '}' character.");
    }
 
    [Fact]
    public void InvalidTemplate_InvalidParameterNameWithOpenBracketThrows()
    {
        ExceptionAssert.Throws<RoutePatternException>(
            () => RoutePatternParser.Parse("{a}/{a{aa}/{z}"),
            "In a route parameter, '{' and '}' must be escaped with '{{' and '}}'.");
    }
 
    [Fact]
    public void InvalidTemplate_InvalidParameterNameWithEmptyNameThrows()
    {
        ExceptionAssert.Throws<RoutePatternException>(
            () => RoutePatternParser.Parse("{a}/{}/{z}"),
            "The route parameter name '' is invalid. Route parameter names must be non-empty and cannot" +
            " contain these characters: '{', '}', '/'. The '?' character marks a parameter as optional, and" +
            " can occur only at the end of the parameter. The '*' character marks a parameter as catch-all," +
            " and can occur only at the start of the parameter.");
    }
 
    [Fact]
    public void InvalidTemplate_InvalidParameterNameWithQuestionThrows()
    {
        ExceptionAssert.Throws<RoutePatternException>(
            () => RoutePatternParser.Parse("{Controller}.mvc/{?}"),
            "The route parameter name '' is invalid. Route parameter names must be non-empty and cannot" +
            " contain these characters: '{', '}', '/'. The '?' character marks a parameter as optional, and" +
            " can occur only at the end of the parameter. The '*' character marks a parameter as catch-all," +
            " and can occur only at the start of the parameter.");
    }
 
    [Fact]
    public void InvalidTemplate_ConsecutiveSeparatorsSlashSlashThrows()
    {
        ExceptionAssert.Throws<RoutePatternException>(
            () => RoutePatternParser.Parse("{a}//{z}"),
            "The route template separator character '/' cannot appear consecutively. It must be separated by " +
            "either a parameter or a literal value.");
    }
 
    [Fact]
    public void InvalidTemplate_WithCatchAllNotAtTheEndThrows()
    {
        ExceptionAssert.Throws<RoutePatternException>(
            () => RoutePatternParser.Parse("foo/{p1}/{*p2}/{p3}"),
            "A catch-all parameter can only appear as the last segment of the route template.");
    }
 
    [Fact]
    public void InvalidTemplate_RepeatedParametersThrows()
    {
        ExceptionAssert.Throws<RoutePatternException>(
            () => RoutePatternParser.Parse("foo/aa{p1}{p2}"),
            "A path segment cannot contain two consecutive parameters. They must be separated by a '/' or by " +
            "a literal string.");
    }
 
    [Theory]
    [InlineData("/foo")]
    [InlineData("~/foo")]
    public void ValidTemplate_CanStartWithSlashOrTildeSlash(string routePattern)
    {
        // Arrange & Act
        var pattern = RoutePatternParser.Parse(routePattern);
 
        // Assert
        Assert.Equal(routePattern, pattern.RawText);
    }
 
    [Fact]
    public void InvalidTemplate_CannotStartWithTilde()
    {
        ExceptionAssert.Throws<RoutePatternException>(
            () => RoutePatternParser.Parse("~foo"),
            "The route template cannot start with a '~' character unless followed by a '/'.");
    }
 
    [Fact]
    public void InvalidTemplate_CannotContainQuestionMark()
    {
        ExceptionAssert.Throws<RoutePatternException>(
            () => RoutePatternParser.Parse("foor?bar"),
            "The literal section 'foor?bar' is invalid. Literal sections cannot contain the '?' character.");
    }
 
    [Fact]
    public void InvalidTemplate_ParameterCannotContainQuestionMark_UnlessAtEnd()
    {
        ExceptionAssert.Throws<RoutePatternException>(
            () => RoutePatternParser.Parse("{foor?b}"),
            "The route parameter name 'foor?b' is invalid. Route parameter names must be non-empty and cannot" +
            " contain these characters: '{', '}', '/'. The '?' character marks a parameter as optional, and" +
            " can occur only at the end of the parameter. The '*' character marks a parameter as catch-all," +
            " and can occur only at the start of the parameter.");
    }
 
    [Fact]
    public void InvalidTemplate_CatchAllMarkedOptional()
    {
        ExceptionAssert.Throws<RoutePatternException>(
            () => RoutePatternParser.Parse("{a}/{*b?}"),
            "A catch-all parameter cannot be marked optional.");
    }
 
    private class RoutePatternEqualityComparer :
        IEqualityComparer<RoutePattern>,
        IEqualityComparer<RoutePatternParameterPolicyReference>
    {
        public bool Equals(RoutePattern x, RoutePattern y)
        {
            if (x == null && y == null)
            {
                return true;
            }
            else if (x == null || y == null)
            {
                return false;
            }
            else
            {
                if (!string.Equals(x.RawText, y.RawText, StringComparison.Ordinal))
                {
                    return false;
                }
 
                if (x.PathSegments.Count != y.PathSegments.Count)
                {
                    return false;
                }
 
                for (var i = 0; i < x.PathSegments.Count; i++)
                {
                    if (x.PathSegments[i].Parts.Count != y.PathSegments[i].Parts.Count)
                    {
                        return false;
                    }
 
                    for (int j = 0; j < x.PathSegments[i].Parts.Count; j++)
                    {
                        if (!Equals(x.PathSegments[i].Parts[j], y.PathSegments[i].Parts[j]))
                        {
                            return false;
                        }
                    }
                }
 
                if (x.Parameters.Count != y.Parameters.Count)
                {
                    return false;
                }
 
                for (var i = 0; i < x.Parameters.Count; i++)
                {
                    if (!Equals(x.Parameters[i], y.Parameters[i]))
                    {
                        return false;
                    }
                }
 
                return true;
            }
        }
 
        private bool Equals(RoutePatternPart x, RoutePatternPart y)
        {
            if (x.GetType() != y.GetType())
            {
                return false;
            }
 
            if (x.IsLiteral && y.IsLiteral)
            {
                return Equals((RoutePatternLiteralPart)x, (RoutePatternLiteralPart)y);
            }
            else if (x.IsParameter && y.IsParameter)
            {
                return Equals((RoutePatternParameterPart)x, (RoutePatternParameterPart)y);
            }
            else if (x.IsSeparator && y.IsSeparator)
            {
                return Equals((RoutePatternSeparatorPart)x, (RoutePatternSeparatorPart)y);
            }
 
            Debug.Fail("This should not be reachable. Do you need to update the comparison logic?");
            return false;
        }
 
        private bool Equals(RoutePatternLiteralPart x, RoutePatternLiteralPart y)
        {
            return x.Content == y.Content;
        }
 
        private bool Equals(RoutePatternParameterPart x, RoutePatternParameterPart y)
        {
            return
                x.Name == y.Name &&
                x.Default == y.Default &&
                x.ParameterKind == y.ParameterKind &&
                Enumerable.SequenceEqual(x.ParameterPolicies, y.ParameterPolicies, this);
 
        }
 
        public bool Equals(RoutePatternParameterPolicyReference x, RoutePatternParameterPolicyReference y)
        {
            return
                x.Content == y.Content &&
                x.ParameterPolicy == y.ParameterPolicy;
        }
 
        private bool Equals(RoutePatternSeparatorPart x, RoutePatternSeparatorPart y)
        {
            return x.Content == y.Content;
        }
 
        public int GetHashCode(RoutePattern obj)
        {
            throw new NotImplementedException();
        }
 
        public int GetHashCode(RoutePatternParameterPolicyReference obj)
        {
            throw new NotImplementedException();
        }
    }
}