11// Licensed to the .NET Foundation under one or more agreements.
22// The .NET Foundation licenses this file to you under the MIT license.
3+
34using System ;
45using System . Collections . Generic ;
56using System . Linq ;
@@ -12,61 +13,118 @@ namespace Microsoft.AspNetCore.Http.Generators.StaticRouteHandlerModel;
1213
1314internal class Endpoint
1415{
15- public string HttpMethod { get ; }
16- public EndpointRoute Route { get ; }
17- public EndpointResponse Response { get ; }
18- public List < DiagnosticDescriptor > Diagnostics { get ; } = new List < DiagnosticDescriptor > ( ) ;
19- public ( string , int ) Location { get ; }
20- public IInvocationOperation Operation { get ; }
21-
22- private WellKnownTypes WellKnownTypes { get ; }
16+ private string ? _argumentListCache ;
2317
2418 public Endpoint ( IInvocationOperation operation , WellKnownTypes wellKnownTypes )
2519 {
2620 Operation = operation ;
27- WellKnownTypes = wellKnownTypes ;
28- Location = GetLocation ( ) ;
29- HttpMethod = GetHttpMethod ( ) ;
30- Response = new EndpointResponse ( Operation , wellKnownTypes ) ;
31- Route = new EndpointRoute ( Operation ) ;
32- }
21+ Location = GetLocation ( operation ) ;
22+ HttpMethod = GetHttpMethod ( operation ) ;
3323
34- private ( string , int ) GetLocation ( )
35- {
36- var filePath = Operation . Syntax . SyntaxTree . FilePath ;
37- var span = Operation . Syntax . SyntaxTree . GetLineSpan ( Operation . Syntax . Span ) ;
38- var lineNumber = span . EndLinePosition . Line + 1 ;
39- return ( filePath , lineNumber ) ;
40- }
24+ if ( ! operation . TryGetRouteHandlerPattern ( out var routeToken ) )
25+ {
26+ Diagnostics . Add ( DiagnosticDescriptors . UnableToResolveRoutePattern ) ;
27+ return ;
28+ }
4129
42- private string GetHttpMethod ( )
43- {
44- var syntax = ( InvocationExpressionSyntax ) Operation . Syntax ;
45- var expression = ( MemberAccessExpressionSyntax ) syntax . Expression ;
46- var name = ( IdentifierNameSyntax ) expression . Name ;
47- var identifier = name . Identifier ;
48- return identifier . ValueText ;
30+ RoutePattern = routeToken . ValueText ;
31+
32+ if ( ! operation . TryGetRouteHandlerMethod ( out var method ) )
33+ {
34+ Diagnostics . Add ( DiagnosticDescriptors . UnableToResolveMethod ) ;
35+ return ;
36+ }
37+
38+ Response = new EndpointResponse ( method , wellKnownTypes ) ;
39+
40+ if ( method . Parameters . Length == 0 )
41+ {
42+ return ;
43+ }
44+
45+ var parameters = new EndpointParameter [ method . Parameters . Length ] ;
46+
47+ for ( var i = 0 ; i < method . Parameters . Length ; i ++ )
48+ {
49+ var parameter = new EndpointParameter ( method . Parameters [ i ] , wellKnownTypes ) ;
50+
51+ if ( parameter . Source == EndpointParameterSource . Unknown )
52+ {
53+ Diagnostics . Add ( DiagnosticDescriptors . GetUnableToResolveParameterDescriptor ( parameter . Name ) ) ;
54+ return ;
55+ }
56+
57+ parameters [ i ] = parameter ;
58+ }
59+
60+ Parameters = parameters ;
4961 }
5062
51- public override bool Equals ( object o )
63+ public string HttpMethod { get ; }
64+ public string ? RoutePattern { get ; }
65+ public EndpointResponse ? Response { get ; }
66+ public EndpointParameter [ ] Parameters { get ; } = Array . Empty < EndpointParameter > ( ) ;
67+ public string EmitArgumentList ( ) => _argumentListCache ??= string . Join ( ", " , Parameters . Select ( p => p . EmitArgument ( ) ) ) ;
68+
69+ public List < DiagnosticDescriptor > Diagnostics { get ; } = new List < DiagnosticDescriptor > ( ) ;
70+
71+ public ( string File , int LineNumber ) Location { get ; }
72+ public IInvocationOperation Operation { get ; }
73+
74+ public override bool Equals ( object o ) =>
75+ o is Endpoint other && Location == other . Location && SignatureEquals ( this , other ) ;
76+
77+ public override int GetHashCode ( ) =>
78+ HashCode . Combine ( Location , GetSignatureHashCode ( this ) ) ;
79+
80+ public static bool SignatureEquals ( Endpoint a , Endpoint b )
5281 {
53- if ( o is null )
82+ if ( ! a . Response . WrappedResponseType . Equals ( b . Response . WrappedResponseType , StringComparison . Ordinal ) ||
83+ ! a . HttpMethod . Equals ( b . HttpMethod , StringComparison . Ordinal ) ||
84+ a . Parameters . Length != b . Parameters . Length )
5485 {
5586 return false ;
5687 }
5788
58- if ( o is Endpoint endpoint )
89+ for ( var i = 0 ; i < a . Parameters . Length ; i ++ )
5990 {
60- return endpoint . HttpMethod . Equals ( HttpMethod , StringComparison . OrdinalIgnoreCase ) &&
61- endpoint . Location . Item1 . Equals ( Location . Item1 , StringComparison . OrdinalIgnoreCase ) &&
62- endpoint . Location . Item2 . Equals ( Location . Item2 ) &&
63- endpoint . Response . Equals ( Response ) &&
64- endpoint . Diagnostics . SequenceEqual ( Diagnostics ) ;
91+ if ( a . Parameters [ i ] . Equals ( b . Parameters [ i ] ) )
92+ {
93+ return false ;
94+ }
6595 }
6696
67- return false ;
97+ return true ;
6898 }
6999
70- public override int GetHashCode ( ) =>
71- HashCode . Combine ( HttpMethod , Route , Location , Response , Diagnostics ) ;
100+ public static int GetSignatureHashCode ( Endpoint endpoint )
101+ {
102+ var hashCode = new HashCode ( ) ;
103+ hashCode . Add ( endpoint . Response . WrappedResponseType ) ;
104+ hashCode . Add ( endpoint . HttpMethod ) ;
105+
106+ foreach ( var parameter in endpoint . Parameters )
107+ {
108+ hashCode . Add ( parameter ) ;
109+ }
110+
111+ return hashCode . ToHashCode ( ) ;
112+ }
113+
114+ private static ( string , int ) GetLocation ( IInvocationOperation operation )
115+ {
116+ var filePath = operation . Syntax . SyntaxTree . FilePath ;
117+ var span = operation . Syntax . SyntaxTree . GetLineSpan ( operation . Syntax . Span ) ;
118+ var lineNumber = span . StartLinePosition . Line + 1 ;
119+ return ( filePath , lineNumber ) ;
120+ }
121+
122+ private static string GetHttpMethod ( IInvocationOperation operation )
123+ {
124+ var syntax = ( InvocationExpressionSyntax ) operation . Syntax ;
125+ var expression = ( MemberAccessExpressionSyntax ) syntax . Expression ;
126+ var name = ( IdentifierNameSyntax ) expression . Name ;
127+ var identifier = name . Identifier ;
128+ return identifier . ValueText ;
129+ }
72130}
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