public Preprocessor(Configuration options)
{
// primary source file is the one that wave is run against
// to produce a single preprocessed monolithic header
primarySource = Environment.ExpandEnvironmentVariables(options.PrimaryHeader);
wavePath = "wave.exe";
// -E indicates default naming scheme for output file (e.g. input.i)
// -m macros.txt creates a separate file containing a list of all found macros
// --variadics enables macros with empty argument lists (necessary for some win32 header)
// -S adds an include path (specified in our config file)
// -D adds a predefined macro (several are necessary to compile the win32 headers)
// -r forcibly ignores a given definition
// final argument is the primary header file to run against
var builder = new StringBuilder("-E -m macros.txt --variadics ");
foreach (var path in options.IncludePaths)
builder.Append("-S \"").Append(Environment.ExpandEnvironmentVariables(path)).Append("\" ");
foreach (var symbol in options.DefineSymbols)
builder.Append("-D ").Append(symbol).Append(" ");
foreach (var symbol in options.IgnoreSymbols)
builder.Append("-r ").Append(symbol).Append(" ");
Source = Path.GetFileName(primarySource);
builder.AppendFormat("\"{0}\"", Source);
arguments = builder.ToString();
}
static void RunGenerator(ApiModel api, Configuration configuration)
{
var templateDirectory = Path.Combine(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location), "Templates");
var templateEngine = new TemplateEngine(new[] { templateDirectory });
templateEngine.RegisterCallback("ApiNamespace", (e, s) => api.Name);
templateEngine.RegisterCallback("ApiName", (e, s) => TemplateCallbacks.GetApiClassName(api));
templateEngine.RegisterCallback("ApiDll", (e, s) => TemplateCallbacks.GetApiDllName(api));
templateEngine.RegisterCallbacks(typeof(TemplateCallbacks));
var outputDirectory = configuration.GeneratorOutputPath;
if (!Directory.Exists(outputDirectory))
Directory.CreateDirectory(outputDirectory);
ApplyTemplate(api, outputDirectory, templateEngine, "Api");
ApplyTemplate(api.Enumerations, outputDirectory, templateEngine, "Enumeration");
ApplyTemplate(api.Structures, outputDirectory, templateEngine, "Structure");
ApplyTemplate(api.Interfaces, outputDirectory, templateEngine, "Interface");
BuildTrampolineAssembly(api, outputDirectory, string.Format("{0}.Trampoline", api.Name));
}
static JObject RunParser(Configuration configuration)
{
// run boost::wave on the primary source file to get a preprocessed file and a list of macros
var preprocessor = new Preprocessor(configuration);
Console.WriteLine(preprocessor.Run());
// before parsing, run some transformations on the preprocessed file to cut down on the size needed to be examined
// this includes dropping any source that is not from the given primary or ancillary
// sources, which is indicated in the preprocessed file by #line directives
var source = preprocessor.Source;
var rawSources = configuration.AdditionalHeaders.Concat(new[] { Path.Combine(Directory.GetCurrentDirectory(), source) });
var relevantSources = new List<string>();
foreach (string s in rawSources)
relevantSources.Add(Environment.ExpandEnvironmentVariables(s));
source = Path.ChangeExtension(source, ".i");
Preprocessor.PostTransform(source, new HashSet<string>(relevantSources));
// run the parser on the preprocessed file to generate a model of the file in memory
var grammarFile = Path.Combine(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location), "header_grammar.cgt");
var parser = new HeaderParser(grammarFile);
var root = parser.Parse(source).ToXml();
var json = ModelXml.Transform(root);
// add a dependency to the base SlimDX.json file
json.Add(new JProperty("dependencies", new JArray(new JValue("../SlimDX/SlimDX.json"))));
return json;
}
/// <summary>
/// The application's entry point.
/// </summary>
/// <param name="arguments">The command line arguments.</param>
static void Main(string[] arguments)
{
if (arguments.Length == 0)
throw new InvalidOperationException("Missing configuration file path.");
var configuration = new Configuration(arguments[0]);
var searchPaths = new HashSet<string>();
var json = RunParser(configuration);
foreach (var layer in configuration.Layers)
{
JObject current = null;
current = JObject.Parse(File.ReadAllText(layer));
searchPaths.Add(Path.GetDirectoryName(Path.GetFullPath(layer)));
// combine the current layer with the base
if (json == null)
json = current;
else
CompositingEngine.Compose(json, current);
}
var generatedModelFile = Path.Combine(configuration.GeneratorOutputPath, configuration.ApiName + ".json");
File.WriteAllText(generatedModelFile, json.ToString());
// run the generator on the composed Json model
var api = ModelJson.Parse(json, searchPaths);
RunGenerator(api, configuration);
}
