tools/checker/MonoChecker.cs

   1 using System;
   2 using System.Collections.Generic;
   3 using System.IO;
   4 using System.Linq;
   5 using System.Text.RegularExpressions;
   6 using CppSharp.AST;
   7 using CppSharp.AST.Extensions;
   8 using CppSharp.Parser;
   9 using Newtonsoft.Json;
  10
  11 namespace CppSharp
  12 {
  13     /**
  14      * This tool reads the AST of a Mono source checkout.
  15      */
  16     static class MonoChecker
  17     {
  18         static string CompilationDatabasePath = @"";
  19
  20         public static void Main(string[] args)
  21         {
  22             ParseCommandLineArgs(args);
  23
  24             Console.WriteLine();
  25             Console.WriteLine("Parsing Mono's source code...");
  26
  27             var options = new DriverOptions();
  28
  29             var log = new TextDiagnosticPrinter();
  30             var driver = new Driver(options, log);
  31
  32             Setup(driver);
  33             driver.Setup();
  34
  35             BuildParseOptions(driver);
  36             if (!driver.ParseCode())
  37                 return;
  38
  39             Check(driver.ASTContext);
  40         }
  41
  42         static void ParseCommandLineArgs(string[] args)
  43         {
  44             var needsArgs = string.IsNullOrWhiteSpace(CompilationDatabasePath);
  45
  46             if (!needsArgs)
  47                 return;
  48
  49             if (args.Length >= 1)
  50                 CompilationDatabasePath = Path.GetFullPath(args[0]);
  51             else
  52                 CompilationDatabasePath = "compile_commands.json";
  53
  54             if (!File.Exists(CompilationDatabasePath)) {
  55                 Console.WriteLine("Could not find JSON compilation database '{0}'",
  56                     CompilationDatabasePath);
  57                 Environment.Exit(0);
  58             }
  59         }
  60
  61         static string GetXcodeToolchainPath()
  62         {
  63             var toolchains = Directory.EnumerateDirectories("/Applications", "Xcode*")
  64                 .ToList();
  65             toolchains.Sort();
  66
  67             var toolchainPath = toolchains.LastOrDefault();
  68             if (toolchainPath == null)
  69                 throw new Exception("Could not find a valid Xcode SDK");
  70
  71             return toolchainPath;
  72         }
  73
  74         static string GetXcodeBuiltinIncludesFolder()
  75         {
  76             var toolchainPath = GetXcodeToolchainPath();
  77
  78             var toolchains = Directory.EnumerateDirectories(Path.Combine(toolchainPath,
  79                 "Contents/Developer/Toolchains")).ToList();
  80             toolchains.Sort();
  81
  82             toolchainPath = toolchains.LastOrDefault();
  83             if (toolchainPath == null)
  84                 throw new Exception("Could not find a valid Xcode toolchain");
  85
  86             var includePaths = Directory.EnumerateDirectories(Path.Combine(toolchainPath,
  87                 "usr/lib/clang")).ToList();
  88             var includePath = includePaths.LastOrDefault();
  89
  90             if (includePath == null)
  91                 throw new Exception("Could not find a valid Clang include folder");
  92
  93             return Path.Combine(includePath, "include");
  94         }
  95
  96         static void SetupXcode(Driver driver)
  97         {
  98             var options = driver.Options;
  99
 100             var builtinsPath = GetXcodeBuiltinIncludesFolder();
 101             options.addSystemIncludeDirs(builtinsPath);
 102
 103             var includePath = "/usr/include";
 104             options.addSystemIncludeDirs(includePath);
 105
 106             options.NoBuiltinIncludes = true;
 107             options.NoStandardIncludes = true;
 108         }
 109
 110         static void Setup(Driver driver)
 111         {
 112             var options = driver.Options;
 113             options.DryRun = true;
 114             options.Verbose = false;
 115             options.LibraryName = "Mono";
 116             options.MicrosoftMode = false;
 117             options.addArguments("-xc");
 118             options.addArguments("-std=gnu99");
 119
 120             SetupXcode(driver);
 121         }
 122
 123         struct CompileUnit
 124         {
 125             public string directory;
 126             public string command;
 127             public string file;
 128         }
 129
 130         static List<CompileUnit> CleanCompileUnits(List<CompileUnit> database)
 131         {
 132             // The compilation database we get from Bear has duplicated entries
 133             // for the same files, so clean it up before passing it down to
 134             // further processing.
 135             var units = new List<CompileUnit>();
 136
 137             foreach (var unit in database) {
 138                 // Ignore compile units compiled with PIC (Position-independent code)
 139                 if (unit.command.EndsWith("-fPIC -DPIC"))
 140                     continue;
 141
 142                 // Ignore compile units that are compiled with gcc since in OSX
 143                 //  it's a wrapper for the real compiler (clang) for which there'll
 144                 //  be another entry.
 145                 if (unit.command.Contains("gcc"))
 146                     continue;
 147
 148                 // Ignore the static runtime build.
 149                 if (unit.command.Contains("_static_la"))
 150                     continue;
 151
 152                 // Ignore the Boehm runtime build.
 153                 if (unit.command.Contains("libmonoruntime_la"))
 154                     continue;
 155
 156                 units.Add(unit);
 157             }
 158
 159             return units;
 160         }
 161
 162         static void BuildParseOptions(Driver driver)
 163         {
 164             var json = File.ReadAllText(CompilationDatabasePath);
 165             var compileUnits = JsonConvert.DeserializeObject<List<CompileUnit>>(json);
 166
 167             compileUnits = CleanCompileUnits(compileUnits);
 168             compileUnits = compileUnits.OrderBy(unit => unit.file).ToList();
 169
 170             foreach (var unit in compileUnits) {
 171                 var source = driver.Project.AddFile(unit.file);
 172                 source.Options = driver.BuildParseOptions(source);
 173
 174                 var args = unit.command.Split(new char[] {' '}).Skip(1);
 175                 foreach (var arg in args) {
 176                     // Skip some arguments that Clang complains about...
 177                     var arguments = new List<string> {
 178                         "-no-cpp-precomp",
 179                         "-Qunused-arguments",
 180                         "-fno-strict-aliasing",
 181                         "-Qunused-arguments",
 182                         "-MD",
 183                         "-MF",
 184                         "-c"
 185                     };
 186
 187                     if (arguments.Contains(arg))
 188                         continue;
 189
 190                     source.Options.addArguments(arg);
 191                 }
 192             }
 193         }
 194
 195         static void Check(ASTContext context)
 196         {
 197             // TODO: Implement checking here
 198         }
 199     }
 200 }