14764138022

Committed 30 Apr 2025 08:52PM UTC coverage: 78.596% (-0.2%) from 78.842%

Build # 14764138022

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Commit Message

Merge pull request #110 from xoofx/objective-c

Add support for Objective-C

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82.56

/src/CppAst/CppParser.cs

// Copyright (c) Alexandre Mutel. All rights reserved.
// Licensed under the BSD-Clause 2 license.
// See license.txt file in the project root for full license information.

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using ClangSharp.Interop;

namespace CppAst
{
    /// <summary>
    /// C/C++ Parser entry point functions.
    /// </summary>
    public static class CppParser
    {
        public const string CppAstRootFileName = "cppast.input";

        /// <summary>
        /// Parse the specified C++ text in-memory.
        /// </summary>
        /// <param name="cppText">A string with a C/C++ text</param>
        /// <param name="options">Options used for parsing this file (e.g include folders...)</param>
        /// <param name="cppFilename">Optional path to a file only used for reporting errors. Default is 'content'</param>
        /// <returns>The result of the compilation</returns>
        public static CppCompilation Parse(string cppText, CppParserOptions options = null, string cppFilename = "content")
        {
            if (cppText == null) throw new ArgumentNullException(nameof(cppText));
            var cppFiles = new List<CppFileOrString> { new CppFileOrString() { Filename = cppFilename, Content = cppText, } };
            return ParseInternal(cppFiles, options);
        }

        /// <summary>
        /// Parse the specified single file.
        /// </summary>
        /// <param name="cppFilename">A path to a C/C++ file on the disk to parse</param>
        /// <param name="options">Options used for parsing this file (e.g include folders...)</param>
        /// <returns>The result of the compilation</returns>
        public static CppCompilation ParseFile(string cppFilename, CppParserOptions options = null)
        {
            if (cppFilename == null) throw new ArgumentNullException(nameof(cppFilename));
            var files = new List<string>() { cppFilename };
            return ParseFiles(files, options);
        }

        /// <summary>
        /// Parse the specified single file.
        /// </summary>
        /// <param name="cppFilenameList">A list of path to C/C++ header files on the disk to parse</param>
        /// <param name="options">Options used for parsing this file (e.g include folders...)</param>
        /// <returns>The result of the compilation</returns>
        public static CppCompilation ParseFiles(List<string> cppFilenameList, CppParserOptions options = null)
        {
            if (cppFilenameList == null) throw new ArgumentNullException(nameof(cppFilenameList));

            var cppFiles = new List<CppFileOrString>();
            foreach (var cppFilepath in cppFilenameList)
            {
                if (string.IsNullOrEmpty(cppFilepath)) throw new InvalidOperationException("A null or empty filename is invalid in the list");
                cppFiles.Add(new CppFileOrString() { Filename = cppFilepath });
            }
            return ParseInternal(cppFiles, options);
        }

        /// <summary>
        /// Private method parsing file or content.
        /// </summary>
        /// <param name="cppFiles">A list of path to C/C++ header files on the disk to parse</param>
        /// <param name="options">Options used for parsing this file (e.g include folders...)</param>
        /// <returns>The result of the compilation</returns>
        private static unsafe CppCompilation ParseInternal(List<CppFileOrString> cppFiles, CppParserOptions options = null)
        {
            if (cppFiles == null) throw new ArgumentNullException(nameof(cppFiles));

            options = options ?? new CppParserOptions();

            var arguments = new List<string>();

            // Make sure that paths are absolute
            var normalizedIncludePaths = new List<string>();
            normalizedIncludePaths.AddRange(options.IncludeFolders.Select(x => Path.Combine(Environment.CurrentDirectory, x)));

            var normalizedSystemIncludePaths = new List<string>();
            normalizedSystemIncludePaths.AddRange(options.SystemIncludeFolders.Select(x => Path.Combine(Environment.CurrentDirectory, x)));

            arguments.AddRange(options.AdditionalArguments);
            arguments.AddRange(normalizedIncludePaths.Select(x => $"-I{x}"));
            arguments.AddRange(normalizedSystemIncludePaths.Select(x => $"-isystem{x}"));
            arguments.AddRange(options.Defines.Select(x => $"-D{x}"));

            arguments.Add("-dM");
            arguments.Add("-E");

            switch (options.ParserKind)
            {
                case CppParserKind.None:
                    break;
                case CppParserKind.Cpp:
                    arguments.Add("-xc++");
                    break;
                case CppParserKind.C:
                    arguments.Add("-xc");
                    break;
                case CppParserKind.ObjC:
                    arguments.Add("-xobjective-c");
                    break;
                default:
                    throw new ArgumentOutOfRangeException();
            }

            if (!arguments.Any(x => x.StartsWith("--target=")))
            {
                arguments.Add($"--target={GetTripleFromOptions(options)}");
            }

            if (options.ParseComments)
            {
                arguments.Add("-fparse-all-comments");
            }

            var translationFlags = CXTranslationUnit_Flags.CXTranslationUnit_None;
            translationFlags |= CXTranslationUnit_Flags.CXTranslationUnit_SkipFunctionBodies;                   // Don't traverse function bodies
            translationFlags |= CXTranslationUnit_Flags.CXTranslationUnit_IncludeAttributedTypes;               // Include attributed types in CXType
            translationFlags |= CXTranslationUnit_Flags.CXTranslationUnit_VisitImplicitAttributes;              // Implicit attributes should be visited

            if (options.ParseMacros)
            {
                translationFlags |= CXTranslationUnit_Flags.CXTranslationUnit_DetailedPreprocessingRecord;
            }
            translationFlags |= CXTranslationUnit_Flags.CXTranslationUnit_DetailedPreprocessingRecord;

            var argumentsArray = arguments.ToArray();

            using (var createIndex = CXIndex.Create())
            {
                var builder = new CppModelBuilder
                {
                    AutoSquashTypedef = options.AutoSquashTypedef,
                    ParseSystemIncludes = options.ParseSystemIncludes,
                    ParseTokenAttributeEnabled = options.ParseTokenAttributes,
                    ParseCommentAttributeEnabled = options.ParseCommentAttribute,
                };
                var compilation = builder.RootCompilation;

                string rootFileName = CppAstRootFileName;
                string rootFileContent = null;

                // Build the root input source file
                var tempBuilder = new StringBuilder();
                if (options.PreHeaderText != null)
                {
                    tempBuilder.AppendLine(options.PreHeaderText);
                }

                foreach (var file in cppFiles)
                {
                    if (file.Content != null)
                    {
                        tempBuilder.AppendLine(file.Content);
                    }
                    else
                    {
                        var filePath = Path.Combine(Environment.CurrentDirectory, file.Filename);
                        tempBuilder.AppendLine($"#include \"{filePath}\"");
                    }
                }

                if (options.PostHeaderText != null)
                {
                    tempBuilder.AppendLine(options.PostHeaderText);
                }

                // TODO: Add debug
                rootFileContent = tempBuilder.ToString();

                compilation.InputText = rootFileContent;

                CXTranslationUnit translationUnit;
                using (CXUnsavedFile unsavedFile = CXUnsavedFile.Create(rootFileName, rootFileContent))
                {
                    ReadOnlySpan<CXUnsavedFile> unsavedFiles = stackalloc CXUnsavedFile[] { unsavedFile };

                    translationUnit = CXTranslationUnit.Parse(createIndex
                        , rootFileName
                        , argumentsArray
                        , unsavedFiles
                        , translationFlags);
                }

                bool skipProcessing = false;

                if (translationUnit.NumDiagnostics != 0)
                {
                    for (uint i = 0; i < translationUnit.NumDiagnostics; ++i)
                    {
                        using (var diagnostic = translationUnit.GetDiagnostic(i))
                        {
                            var message = GetMessageAndLocation(rootFileContent, diagnostic, out var location);

                            switch (diagnostic.Severity)
                            {
                                case CXDiagnosticSeverity.CXDiagnostic_Ignored:
                                case CXDiagnosticSeverity.CXDiagnostic_Note:
                                    compilation.Diagnostics.Info(message, location);
                                    break;
                                case CXDiagnosticSeverity.CXDiagnostic_Warning:
                                    // Avoid warning from clang (0, 0): warning: argument unused during compilation: '-fsyntax-only'
                                    if (!message.Contains("-fsyntax-only"))
                                    {
                                        compilation.Diagnostics.Warning(message, location);
                                    }
                                    break;
                                case CXDiagnosticSeverity.CXDiagnostic_Error:
                                case CXDiagnosticSeverity.CXDiagnostic_Fatal:
                                    compilation.Diagnostics.Error(message, location);
                                    skipProcessing = true;
                                    break;
                            }
                        }
                    }
                }

                if (skipProcessing)
                {
                    compilation.Diagnostics.Warning($"Compilation aborted due to one or more errors listed above.", new CppSourceLocation(rootFileName, 0, 1, 1));
                }
                else
                {
                    translationUnit.Cursor.VisitChildren(builder.VisitTranslationUnit, clientData: default);
                }

                translationUnit.Dispose();

                return compilation;
            }
        }

        private static string GetMessageAndLocation(string rootContent, CXDiagnostic diagnostic, out CppSourceLocation location)
        {
            var builder = new StringBuilder();
            builder.Append(diagnostic.ToString());
            location = CppModelBuilder.GetSourceLocation(diagnostic.Location);
            if (location.File == CppAstRootFileName)
            {
                var reader = new StringReader(rootContent);
                var lines = new List<string>();
                string line;
                while ((line = reader.ReadLine()) != null)
                {
                    lines.Add(line);
                }

                var lineIndex = location.Line - 1;
                if (lineIndex < lines.Count)
                {
                    builder.AppendLine();
                    builder.AppendLine(lines[lineIndex]);
                    for (int i = 0; i < location.Column - 1; i++)
                    {
                        builder.Append(i + 1 == location.Column - 1 ? "-" : " ");
                    }

                    builder.AppendLine("^-");
                }
            }

            diagnostic.Dispose();
            return builder.ToString();
        }

        private static string GetTripleFromOptions(CppParserOptions options)
        {
            // From https://clang.llvm.org/docs/CrossCompilation.html
            // <arch><sub>-<vendor>-<sys>-<abi>
            var targetCpu = GetTargetCpuAsString(options.TargetCpu);
            var targetCpuSub = options.TargetCpuSub ?? string.Empty;
            var targetVendor = options.TargetVendor ?? "pc";
            var targetSystem = options.TargetSystem ?? "windows";
            var targetAbi = options.TargetAbi ?? "";

            return $"{targetCpu}{targetCpuSub}-{targetVendor}-{targetSystem}-{targetAbi}";
        }

        private static string GetTargetCpuAsString(CppTargetCpu targetCpu)
        {
            switch (targetCpu)
            {
                case CppTargetCpu.X86:
                    return "i686";
                case CppTargetCpu.X86_64:
                    return "x86_64";
                case CppTargetCpu.ARM:
                    return "arm";
                case CppTargetCpu.ARM64:
                    return "aarch64";
                default:
                    throw new ArgumentOutOfRangeException(nameof(targetCpu), targetCpu, null);
            }
        }

        private struct CppFileOrString
        {
            public string Filename;

            public string Content;

            public override string ToString()
            {
                return $"{nameof(Filename)}: {Filename}, {nameof(Content)}: {Content}";
            }
        }
    }
}

1	// Copyright (c) Alexandre Mutel. All rights reserved.
2	// Licensed under the BSD-Clause 2 license.
3	// See license.txt file in the project root for full license information.
4
5	using System;
6	using System.Collections.Generic;
7	using System.IO;
8	using System.Linq;
9	using System.Runtime.InteropServices;
10	using System.Text;
11	using ClangSharp.Interop;
12
13	namespace CppAst
14	{
15	/// <summary>
16	/// C/C++ Parser entry point functions.
17	/// </summary>
18	public static class CppParser
19	{
20	public const string CppAstRootFileName = "cppast.input";
21
22	/// <summary>
23	/// Parse the specified C++ text in-memory.
24	/// </summary>
25	/// <param name="cppText">A string with a C/C++ text</param>
26	/// <param name="options">Options used for parsing this file (e.g include folders...)</param>
27	/// <param name="cppFilename">Optional path to a file only used for reporting errors. Default is 'content'</param>
28	/// <returns>The result of the compilation</returns>
29	public static CppCompilation Parse(string cppText, CppParserOptions options = null, string cppFilename = "content")
30	{
31	if (cppText == null) throw new ArgumentNullException(nameof(cppText));	93!
32	var cppFiles = new List<CppFileOrString> { new CppFileOrString() { Filename = cppFilename, Content = cppText, } };	93✔
33	return ParseInternal(cppFiles, options);	93✔
34	}
35
36	/// <summary>
37	/// Parse the specified single file.
38	/// </summary>
39	/// <param name="cppFilename">A path to a C/C++ file on the disk to parse</param>
40	/// <param name="options">Options used for parsing this file (e.g include folders...)</param>
41	/// <returns>The result of the compilation</returns>
42	public static CppCompilation ParseFile(string cppFilename, CppParserOptions options = null)
43	{
44	if (cppFilename == null) throw new ArgumentNullException(nameof(cppFilename));	92!
45	var files = new List<string>() { cppFilename };	92✔
46	return ParseFiles(files, options);	92✔
47	}
48
49	/// <summary>
50	/// Parse the specified single file.
51	/// </summary>
52	/// <param name="cppFilenameList">A list of path to C/C++ header files on the disk to parse</param>
53	/// <param name="options">Options used for parsing this file (e.g include folders...)</param>
54	/// <returns>The result of the compilation</returns>
55	public static CppCompilation ParseFiles(List<string> cppFilenameList, CppParserOptions options = null)
56	{
57	if (cppFilenameList == null) throw new ArgumentNullException(nameof(cppFilenameList));	92!
58
59	var cppFiles = new List<CppFileOrString>();	92✔
60	foreach (var cppFilepath in cppFilenameList)	368✔
61	{
62	if (string.IsNullOrEmpty(cppFilepath)) throw new InvalidOperationException("A null or empty filename is invalid in the list");	92!
63	cppFiles.Add(new CppFileOrString() { Filename = cppFilepath });	92✔
64	}
65	return ParseInternal(cppFiles, options);	92✔
66	}
67
68	/// <summary>
69	/// Private method parsing file or content.
70	/// </summary>
71	/// <param name="cppFiles">A list of path to C/C++ header files on the disk to parse</param>
72	/// <param name="options">Options used for parsing this file (e.g include folders...)</param>
73	/// <returns>The result of the compilation</returns>
74	private static unsafe CppCompilation ParseInternal(List<CppFileOrString> cppFiles, CppParserOptions options = null)
75	{
76	if (cppFiles == null) throw new ArgumentNullException(nameof(cppFiles));	185!
77
78	options = options ?? new CppParserOptions();	185✔
79
80	var arguments = new List<string>();	185✔
81
82	// Make sure that paths are absolute
83	var normalizedIncludePaths = new List<string>();	185✔
84	normalizedIncludePaths.AddRange(options.IncludeFolders.Select(x => Path.Combine(Environment.CurrentDirectory, x)));	185✔
85
86	var normalizedSystemIncludePaths = new List<string>();	185✔
87	normalizedSystemIncludePaths.AddRange(options.SystemIncludeFolders.Select(x => Path.Combine(Environment.CurrentDirectory, x)));	185✔
88
89	arguments.AddRange(options.AdditionalArguments);	185✔
90	arguments.AddRange(normalizedIncludePaths.Select(x => $"-I{x}"));	185✔
91	arguments.AddRange(normalizedSystemIncludePaths.Select(x => $"-isystem{x}"));	185✔
92	arguments.AddRange(options.Defines.Select(x => $"-D{x}"));	776✔
93
94	arguments.Add("-dM");	185✔
95	arguments.Add("-E");	185✔
96
97	switch (options.ParserKind)	185!
98	{
99	case CppParserKind.None:
100	break;
101	case CppParserKind.Cpp:
102	arguments.Add("-xc++");	169✔
103	break;	169✔
104	case CppParserKind.C:
NEW 105	arguments.Add("-xc");	×
NEW 106	break;	×
107	case CppParserKind.ObjC:
108	arguments.Add("-xobjective-c");	16✔
109	break;	16✔
110	default:
NEW 111	throw new ArgumentOutOfRangeException();	×
112	}
113
114	if (!arguments.Any(x => x.StartsWith("--target=")))	1,598✔
115	{
116	arguments.Add($"--target={GetTripleFromOptions(options)}");	185✔
117	}
118
119	if (options.ParseComments)	185✔
120	{
121	arguments.Add("-fparse-all-comments");	185✔
122	}
123
124	var translationFlags = CXTranslationUnit_Flags.CXTranslationUnit_None;	185✔
125	translationFlags \|= CXTranslationUnit_Flags.CXTranslationUnit_SkipFunctionBodies; // Don't traverse function bodies	185✔
126	translationFlags \|= CXTranslationUnit_Flags.CXTranslationUnit_IncludeAttributedTypes; // Include attributed types in CXType	185✔
127	translationFlags \|= CXTranslationUnit_Flags.CXTranslationUnit_VisitImplicitAttributes; // Implicit attributes should be visited	185✔
128
129	if (options.ParseMacros)	185✔
130	{
131	translationFlags \|= CXTranslationUnit_Flags.CXTranslationUnit_DetailedPreprocessingRecord;	2✔
132	}
133	translationFlags \|= CXTranslationUnit_Flags.CXTranslationUnit_DetailedPreprocessingRecord;	185✔
134
135	var argumentsArray = arguments.ToArray();	185✔
136
137	using (var createIndex = CXIndex.Create())	185✔
138	{
139	var builder = new CppModelBuilder	185✔
140	{	185✔
141	AutoSquashTypedef = options.AutoSquashTypedef,	185✔
142	ParseSystemIncludes = options.ParseSystemIncludes,	185✔
143	ParseTokenAttributeEnabled = options.ParseTokenAttributes,	185✔
144	ParseCommentAttributeEnabled = options.ParseCommentAttribute,	185✔
145	};	185✔
146	var compilation = builder.RootCompilation;	185✔
147
148	string rootFileName = CppAstRootFileName;	185✔
149	string rootFileContent = null;	185✔
150
151	// Build the root input source file
152	var tempBuilder = new StringBuilder();	185✔
153	if (options.PreHeaderText != null)	185!
154	{
155	tempBuilder.AppendLine(options.PreHeaderText);	×
156	}
157
158	foreach (var file in cppFiles)	740✔
159	{
160	if (file.Content != null)	185✔
161	{
162	tempBuilder.AppendLine(file.Content);	93✔
163	}
164	else
165	{
166	var filePath = Path.Combine(Environment.CurrentDirectory, file.Filename);	92✔
167	tempBuilder.AppendLine($"#include \"{filePath}\"");	92✔
168	}
169	}
170
171	if (options.PostHeaderText != null)	185!
172	{
173	tempBuilder.AppendLine(options.PostHeaderText);	×
174	}
175
176	// TODO: Add debug
177	rootFileContent = tempBuilder.ToString();	185✔
178
179	compilation.InputText = rootFileContent;	185✔
180
181	CXTranslationUnit translationUnit;
182	using (CXUnsavedFile unsavedFile = CXUnsavedFile.Create(rootFileName, rootFileContent))	185✔
183	{
184	ReadOnlySpan<CXUnsavedFile> unsavedFiles = stackalloc CXUnsavedFile[] { unsavedFile };	185✔
185
186	translationUnit = CXTranslationUnit.Parse(createIndex	185✔
187	, rootFileName	185✔
188	, argumentsArray	185✔
189	, unsavedFiles	185✔
190	, translationFlags);	185✔
191	}	185✔
192
193	bool skipProcessing = false;	185✔
194
195	if (translationUnit.NumDiagnostics != 0)	185✔
196	{
197	for (uint i = 0; i < translationUnit.NumDiagnostics; ++i)	764✔
198	{
199	using (var diagnostic = translationUnit.GetDiagnostic(i))	197✔
200	{
201	var message = GetMessageAndLocation(rootFileContent, diagnostic, out var location);	197✔
202
203	switch (diagnostic.Severity)	197!
204	{
205	case CXDiagnosticSeverity.CXDiagnostic_Ignored:
206	case CXDiagnosticSeverity.CXDiagnostic_Note:
207	compilation.Diagnostics.Info(message, location);	×
208	break;	×
209	case CXDiagnosticSeverity.CXDiagnostic_Warning:
210	// Avoid warning from clang (0, 0): warning: argument unused during compilation: '-fsyntax-only'
211	if (!message.Contains("-fsyntax-only"))	197✔
212	{
213	compilation.Diagnostics.Warning(message, location);	12✔
214	}
215	break;	12✔
216	case CXDiagnosticSeverity.CXDiagnostic_Error:
217	case CXDiagnosticSeverity.CXDiagnostic_Fatal:
218	compilation.Diagnostics.Error(message, location);	×
219	skipProcessing = true;	×
220	break;
221	}
222	}	185✔
223	}
224	}
225
226	if (skipProcessing)	185!
227	{
228	compilation.Diagnostics.Warning($"Compilation aborted due to one or more errors listed above.", new CppSourceLocation(rootFileName, 0, 1, 1));	×
229	}
230	else
231	{
232	translationUnit.Cursor.VisitChildren(builder.VisitTranslationUnit, clientData: default);	185✔
233	}
234
235	translationUnit.Dispose();	185✔
236
237	return compilation;	185✔
238	}
239	}	185✔
240
241	private static string GetMessageAndLocation(string rootContent, CXDiagnostic diagnostic, out CppSourceLocation location)
242	{
243	var builder = new StringBuilder();	197✔
244	builder.Append(diagnostic.ToString());	197✔
245	location = CppModelBuilder.GetSourceLocation(diagnostic.Location);	197✔
246	if (location.File == CppAstRootFileName)	197✔
247	{
248	var reader = new StringReader(rootContent);	6✔
249	var lines = new List<string>();	6✔
250	string line;
251	while ((line = reader.ReadLine()) != null)	64✔
252	{
253	lines.Add(line);	58✔
254	}
255
256	var lineIndex = location.Line - 1;	6✔
257	if (lineIndex < lines.Count)	6✔
258	{
259	builder.AppendLine();	6✔
260	builder.AppendLine(lines[lineIndex]);	6✔
261	for (int i = 0; i < location.Column - 1; i++)	136✔
262	{
263	builder.Append(i + 1 == location.Column - 1 ? "-" : " ");	62✔
264	}
265
266	builder.AppendLine("^-");	6✔
267	}
268	}
269
270	diagnostic.Dispose();	197✔
271	return builder.ToString();	197✔
272	}
273
274	private static string GetTripleFromOptions(CppParserOptions options)
275	{
276	// From https://clang.llvm.org/docs/CrossCompilation.html
277	// <arch><sub>-<vendor>-<sys>-<abi>
278	var targetCpu = GetTargetCpuAsString(options.TargetCpu);	185✔
279	var targetCpuSub = options.TargetCpuSub ?? string.Empty;	185!
280	var targetVendor = options.TargetVendor ?? "pc";	185!
281	var targetSystem = options.TargetSystem ?? "windows";	185!
282	var targetAbi = options.TargetAbi ?? "";	185!
283
284	return $"{targetCpu}{targetCpuSub}-{targetVendor}-{targetSystem}-{targetAbi}";	185✔
285	}
286
287	private static string GetTargetCpuAsString(CppTargetCpu targetCpu)
288	{
289	switch (targetCpu)
290	{
291	case CppTargetCpu.X86:
292	return "i686";	12!
293	case CppTargetCpu.X86_64:
294	return "x86_64";	157✔
295	case CppTargetCpu.ARM:
296	return "arm";	×
297	case CppTargetCpu.ARM64:
298	return "aarch64";	16✔
299	default:
300	throw new ArgumentOutOfRangeException(nameof(targetCpu), targetCpu, null);	×
301	}
302	}
303
304	private struct CppFileOrString
305	{
306	public string Filename;
307
308	public string Content;
309
310	public override string ToString()
311	{
312	return $"{nameof(Filename)}: {Filename}, {nameof(Content)}: {Content}";	×
313	}
314	}
315	}
316	}

xoofx / CppAst.NET / 14764138022

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