6253798736

Committed 20 Sep 2023 08:33PM UTC coverage: 75.653% (-7.5%) from 83.158%

Build # 6253798736

Build Type

Pull #28

github

Committed by

aalmada

Commit Message

Fixes

Pull Request Pull Request #28: Add IsIndexable

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90.91

/NetFabric.CodeAnalysis/ITypeSymbolExtensions.IsIndexable.cs

﻿using Microsoft.CodeAnalysis;
using System.Diagnostics.CodeAnalysis;

namespace NetFabric.CodeAnalysis;

public static partial class ITypeSymbolExtensions
{
    /// <summary>
    /// Checks if the provided <paramref name="typeSymbol"/> is indexable.
    /// </summary>
    /// <param name="typeSymbol">The <see cref="ITypeSymbol"/> to be checked for indexability.</param>
    /// <returns>
    /// <c>true</c> if the <paramref name="typeSymbol"/> is indexable; otherwise, <c>false</c>.
    /// </returns>
    /// <remarks>
    /// This method examines the provided <paramref name="typeSymbol"/> to determine if it can be
    /// indexed. To be considered indexable, the type must have an indexer with a single dimension
    /// of type <see cref="int"/> and a readable property named <c>Count</c> or <c>Length</c> of
    /// type <see cref="int"/>.
    /// </remarks>
    public static bool IsIndexable(this ITypeSymbol typeSymbol)
        => IsIndexable(typeSymbol, out _, out _);

    /// <summary>
    /// Checks if the provided <paramref name="typeSymbol"/> is indexable, and if so, retrieves
    /// information about the indexable symbols.
    /// </summary>
    /// <param name="typeSymbol">The <see cref="ITypeSymbol"/> to be checked for indexability.</param>
    /// <param name="indexableSymbols">
    /// When the method returns <c>true</c>, this parameter will contain information about the
    /// indexable symbols associated with the <paramref name="typeSymbol"/>. If the method returns
    /// <c>false</c>, this parameter will be <c>null</c>.
    /// </param>
    /// <returns>
    /// <c>true</c> if the <paramref name="typeSymbol"/> is indexable; otherwise, <c>false</c>.
    /// </returns>
    /// <remarks>
    /// This method examines the provided <paramref name="typeSymbol"/> to determine if it can be
    /// indexed. To be considered indexable, the type must have an indexer with a single dimension
    /// of type <see cref="int"/> and a readable property named <c>Count</c> or <c>Length</c> of
    /// type <see cref="int"/>.
    /// 
    /// If the type is indexable, the method provides information about the indexable symbols
    /// associated with it, which can be useful for various code analysis tasks.
    /// </remarks>
    public static bool IsIndexable(this ITypeSymbol typeSymbol,
        [NotNullWhen(true)] out IndexableSymbols? indexableSymbols)
        => IsIndexable(typeSymbol, out indexableSymbols, out _);

    /// <summary>
    /// Checks if the provided <paramref name="typeSymbol"/> is indexable, and if so, retrieves
    /// information about the indexable symbols and any potential error.
    /// </summary>
    /// <param name="typeSymbol">The <see cref="ITypeSymbol"/> to be checked for indexability.</param>
    /// <param name="indexableSymbols">
    /// When the method returns <c>true</c>, this parameter will contain information about the
    /// indexable symbols associated with the <paramref name="typeSymbol"/>. If the method returns
    /// <c>false</c>, this parameter will be <c>null</c>.
    /// </param>
    /// <param name="error">
    /// When the method returns <c>false</c>, this parameter will contain information about any
    /// error encountered while determining indexability. If the method returns <c>true</c>, this
    /// parameter will be <see cref="IsIndexableError.None"/>.
    /// </param>
    /// <returns>
    /// <c>true</c> if the <paramref name="typeSymbol"/> is indexable; otherwise, <c>false</c>.
    /// </returns>
    /// <remarks>
    /// This method examines the provided <paramref name="typeSymbol"/> to determine if it can be
    /// indexed. To be considered indexable, the type must have an indexer with a single dimension
    /// of type <see cref="int"/> and a readable property named <c>Count</c> or <c>Length</c> of
    /// type <see cref="int"/>.
    /// 
    /// If the type is indexable, the method provides information about the indexable symbols
    /// associated with it, which can be useful for various code analysis tasks.
    /// </remarks>
    public static bool IsIndexable(this ITypeSymbol typeSymbol,
        [NotNullWhen(true)] out IndexableSymbols? indexableSymbols,
        out IsIndexableError error)
    {
        var countOrLength = typeSymbol.GetPublicReadProperty(NameOf.Count);
        countOrLength ??= typeSymbol.GetPublicReadProperty(NameOf.Length);
        if (countOrLength is null)
        {
            indexableSymbols = default;
            error = IsIndexableError.MissingCountOrLength;
            return false;
        }

        var indexer = typeSymbol.GetPublicReadIndexer(countOrLength.GetMethod.ReturnType);
        if (indexer is null)
        {
            indexableSymbols = default;
            error = IsIndexableError.MissingIndexer;
            return false;
        }

        indexableSymbols = new IndexableSymbols(indexer, countOrLength);
        error = IsIndexableError.None;
        return true;
    }
}

1	using Microsoft.CodeAnalysis;
2	using System.Diagnostics.CodeAnalysis;
3
4	namespace NetFabric.CodeAnalysis;
5
6	public static partial class ITypeSymbolExtensions
7	{
8	/// <summary>
9	/// Checks if the provided <paramref name="typeSymbol"/> is indexable.
10	/// </summary>
11	/// <param name="typeSymbol">The <see cref="ITypeSymbol"/> to be checked for indexability.</param>
12	/// <returns>
13	/// <c>true</c> if the <paramref name="typeSymbol"/> is indexable; otherwise, <c>false</c>.
14	/// </returns>
15	/// <remarks>
16	/// This method examines the provided <paramref name="typeSymbol"/> to determine if it can be
17	/// indexed. To be considered indexable, the type must have an indexer with a single dimension
18	/// of type <see cref="int"/> and a readable property named <c>Count</c> or <c>Length</c> of
19	/// type <see cref="int"/>.
20	/// </remarks>
21	public static bool IsIndexable(this ITypeSymbol typeSymbol)
22	=> IsIndexable(typeSymbol, out _, out _);	×
23
24	/// <summary>
25	/// Checks if the provided <paramref name="typeSymbol"/> is indexable, and if so, retrieves
26	/// information about the indexable symbols.
27	/// </summary>
28	/// <param name="typeSymbol">The <see cref="ITypeSymbol"/> to be checked for indexability.</param>
29	/// <param name="indexableSymbols">
30	/// When the method returns <c>true</c>, this parameter will contain information about the
31	/// indexable symbols associated with the <paramref name="typeSymbol"/>. If the method returns
32	/// <c>false</c>, this parameter will be <c>null</c>.
33	/// </param>
34	/// <returns>
35	/// <c>true</c> if the <paramref name="typeSymbol"/> is indexable; otherwise, <c>false</c>.
36	/// </returns>
37	/// <remarks>
38	/// This method examines the provided <paramref name="typeSymbol"/> to determine if it can be
39	/// indexed. To be considered indexable, the type must have an indexer with a single dimension
40	/// of type <see cref="int"/> and a readable property named <c>Count</c> or <c>Length</c> of
41	/// type <see cref="int"/>.
42	///
43	/// If the type is indexable, the method provides information about the indexable symbols
44	/// associated with it, which can be useful for various code analysis tasks.
45	/// </remarks>
46	public static bool IsIndexable(this ITypeSymbol typeSymbol,
47	[NotNullWhen(true)] out IndexableSymbols? indexableSymbols)
48	=> IsIndexable(typeSymbol, out indexableSymbols, out _);	×
49
50	/// <summary>
51	/// Checks if the provided <paramref name="typeSymbol"/> is indexable, and if so, retrieves
52	/// information about the indexable symbols and any potential error.
53	/// </summary>
54	/// <param name="typeSymbol">The <see cref="ITypeSymbol"/> to be checked for indexability.</param>
55	/// <param name="indexableSymbols">
56	/// When the method returns <c>true</c>, this parameter will contain information about the
57	/// indexable symbols associated with the <paramref name="typeSymbol"/>. If the method returns
58	/// <c>false</c>, this parameter will be <c>null</c>.
59	/// </param>
60	/// <param name="error">
61	/// When the method returns <c>false</c>, this parameter will contain information about any
62	/// error encountered while determining indexability. If the method returns <c>true</c>, this
63	/// parameter will be <see cref="IsIndexableError.None"/>.
64	/// </param>
65	/// <returns>
66	/// <c>true</c> if the <paramref name="typeSymbol"/> is indexable; otherwise, <c>false</c>.
67	/// </returns>
68	/// <remarks>
69	/// This method examines the provided <paramref name="typeSymbol"/> to determine if it can be
70	/// indexed. To be considered indexable, the type must have an indexer with a single dimension
71	/// of type <see cref="int"/> and a readable property named <c>Count</c> or <c>Length</c> of
72	/// type <see cref="int"/>.
73	///
74	/// If the type is indexable, the method provides information about the indexable symbols
75	/// associated with it, which can be useful for various code analysis tasks.
76	/// </remarks>
77	public static bool IsIndexable(this ITypeSymbol typeSymbol,
78	[NotNullWhen(true)] out IndexableSymbols? indexableSymbols,
79	out IsIndexableError error)
80	{
81	var countOrLength = typeSymbol.GetPublicReadProperty(NameOf.Count);	7✔
82	countOrLength ??= typeSymbol.GetPublicReadProperty(NameOf.Length);	7✔
83	if (countOrLength is null)	7✔
84	{
85	indexableSymbols = default;	1✔
86	error = IsIndexableError.MissingCountOrLength;	1✔
87	return false;	1✔
88	}
89
90	var indexer = typeSymbol.GetPublicReadIndexer(countOrLength.GetMethod.ReturnType);	6✔
91	if (indexer is null)	6✔
92	{
93	indexableSymbols = default;	2✔
94	error = IsIndexableError.MissingIndexer;	2✔
95	return false;	2✔
96	}
97
98	indexableSymbols = new IndexableSymbols(indexer, countOrLength);	4✔
99	error = IsIndexableError.None;	4✔
100	return true;	4✔
101	}
102	}

NetFabric / NetFabric.CodeAnalysis / 6253798736

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