public static string Parse(string code, JavaConversionOptions options = null)
{
try
{
string result = JavaToCSharpConverter.ConvertText(code, options);
return result;
}
catch (ParseException e)
{
if (Regex.IsMatch(e.Message, method_regex))
{
string w = "public class foo {\n" + code + "\n}";
return Parse(w,
new JavaConversionOptions
{
IncludeNamespace = false,
IncludeUsings = false,
IncludeClass = false
});
}
}
return null;
}
static void Main(string[] args)
{
if (args == null || args.Length < 2)
{
Console.WriteLine("Usage: JavaToCSharpCli.exe [pathToJavaFile] [pathToCsOutputFile]");
return;
}
if (!File.Exists(args[0]))
{
Console.WriteLine("Java input file doesn't exist!");
return;
}
var javaText = File.ReadAllText(args[0]);
// HACK for testing
var options = new JavaConversionOptions()
.AddPackageReplacement("org\\.apache\\.lucene", "Lucene.Net")
.AddUsing("Lucene.Net")
.AddUsing("Lucene.Net.Support")
.AddUsing("Lucene.Net.Util");
var parsed = JavaToCSharpConverter.ConvertText(javaText, options);
File.WriteAllText(args[1], parsed);
Console.WriteLine("Done!");
}
public static string ConvertText(string javaText, JavaConversionOptions options = null)
{
if (options == null)
options = new JavaConversionOptions();
options.ConversionStateChanged(ConversionState.Starting);
var context = new ConversionContext(options);
var textBytes = Encoding.UTF8.GetBytes(javaText ?? string.Empty);
using (var stringreader = new MemoryStream(textBytes))
using (var wrapper = new ikvm.io.InputStreamWrapper(stringreader))
{
options.ConversionStateChanged(ConversionState.ParsingJavaAST);
var parsed = JavaParser.parse(wrapper);
options.ConversionStateChanged(ConversionState.BuildingCSharpAST);
var types = parsed.getTypes().ToList<TypeDeclaration>();
var imports = parsed.getImports();
if (imports == null || imports.isEmpty())
options.IncludeUsings = false;
var package = parsed.getPackage();
if (package == null)
options.IncludeNamespace = false;
var usings = new List<UsingDirectiveSyntax>();
//foreach (var import in imports)
//{
// var usingSyntax = Syntax.UsingDirective(Syntax.ParseName(import.getName().toString()));
// usings.Add(usingSyntax);
//}
if (options.IncludeUsings)
{
foreach (var ns in options.Usings)
{
var usingSyntax = Syntax.UsingDirective(Syntax.ParseName(ns));
usings.Add(usingSyntax);
}
}
var rootMembers = new List<MemberDeclarationSyntax>();
NamespaceDeclarationSyntax namespaceSyntax = null;
if (options.IncludeNamespace)
{
string packageName = package.getName().toString();
foreach (var packageReplacement in options.PackageReplacements)
{
packageName = packageReplacement.Replace(packageName);
}
packageName = TypeHelper.Capitalize(packageName);
namespaceSyntax = Syntax.NamespaceDeclaration(Syntax.ParseName(packageName));
}
foreach (var type in types)
{
if (type is ClassOrInterfaceDeclaration)
{
var classOrIntType = type as ClassOrInterfaceDeclaration;
if (classOrIntType.isInterface())
{
var interfaceSyntax = VisitInterfaceDeclaration(context, classOrIntType, false);
if (options.IncludeNamespace)
namespaceSyntax = namespaceSyntax.AddMembers(interfaceSyntax);
else if (options.IncludeClass)
rootMembers.Add(interfaceSyntax);
}
else
{
var classSyntax = VisitClassDeclaration(context, classOrIntType, false);
if (options.IncludeNamespace)
namespaceSyntax = namespaceSyntax.AddMembers(classSyntax);
else if (options.IncludeClass)
rootMembers.Add(classSyntax);
else
rootMembers.AddRange(classSyntax.Members.OfType<MethodDeclarationSyntax>());
}
}
}
if (options.IncludeNamespace)
rootMembers.Add(namespaceSyntax);
var root = Syntax.CompilationUnit(
externs: null,
usings: Syntax.List(usings.ToArray()),
attributeLists: null,
members: Syntax.List<MemberDeclarationSyntax>(rootMembers))
.NormalizeWhitespace();
var tree = SyntaxTree.Create(root);
options.ConversionStateChanged(ConversionState.Done);
return tree.GetText().ToString();
}
}
public static string ConvertText(string javaText, JavaConversionOptions options = null)
{
if (options == null)
{
options = new JavaConversionOptions();
}
options.ConversionStateChanged(ConversionState.Starting);
var context = new ConversionContext(options);
var textBytes = Encoding.UTF8.GetBytes(javaText ?? string.Empty);
using (var stringreader = new MemoryStream(textBytes))
using (var wrapper = new ikvm.io.InputStreamWrapper(stringreader))
{
options.ConversionStateChanged(ConversionState.ParsingJavaAST);
var parsed = JavaParser.parse(wrapper);
options.ConversionStateChanged(ConversionState.BuildingCSharpAST);
var types = parsed.getTypes().ToList <TypeDeclaration>();
var imports = parsed.getImports().ToList <ImportDeclaration>();
var package = parsed.getPackage();
var usings = new List <UsingDirectiveSyntax>();
//foreach (var import in imports)
//{
// var usingSyntax = SyntaxFactory.UsingDirective(SyntaxFactory.ParseName(import.getName().toString()));
// usings.Add(usingSyntax);
//}
if (options.IncludeUsings)
{
foreach (var ns in options.Usings.Where(x => !string.IsNullOrWhiteSpace(x)))
{
var usingSyntax = SyntaxFactory.UsingDirective(SyntaxFactory.ParseName(ns));
usings.Add(usingSyntax);
}
}
var rootMembers = new List <MemberDeclarationSyntax>();
NamespaceDeclarationSyntax namespaceSyntax = null;
if (options.IncludeNamespace)
{
string packageName = package.getName().toString();
foreach (var packageReplacement in options.PackageReplacements)
{
packageName = packageReplacement.Replace(packageName);
}
packageName = TypeHelper.Capitalize(packageName);
namespaceSyntax = SyntaxFactory.NamespaceDeclaration(SyntaxFactory.ParseName(packageName));
}
foreach (var type in types)
{
if (type is ClassOrInterfaceDeclaration)
{
var classOrIntType = type as ClassOrInterfaceDeclaration;
if (classOrIntType.isInterface())
{
var interfaceSyntax = VisitInterfaceDeclaration(context, classOrIntType, false);
if (options.IncludeNamespace)
{
namespaceSyntax = namespaceSyntax.AddMembers(interfaceSyntax);
}
else
{
rootMembers.Add(interfaceSyntax);
}
}
else
{
var classSyntax = VisitClassDeclaration(context, classOrIntType, false);
if (options.IncludeNamespace)
{
namespaceSyntax = namespaceSyntax.AddMembers(classSyntax);
}
else
{
rootMembers.Add(classSyntax);
}
}
}
}
if (options.IncludeNamespace)
{
rootMembers.Add(namespaceSyntax);
}
var root = SyntaxFactory.CompilationUnit(
externs: new SyntaxList <ExternAliasDirectiveSyntax>(),
usings: SyntaxFactory.List(usings.ToArray()),
attributeLists: new SyntaxList <AttributeListSyntax>(),
members: SyntaxFactory.List <MemberDeclarationSyntax>(rootMembers))
.NormalizeWhitespace();
var tree = SyntaxFactory.SyntaxTree(root);
options.ConversionStateChanged(ConversionState.Done);
return(tree.GetText().ToString());
}
}
public void Convert()
{
var options = new JavaConversionOptions();
options.ClearUsings();
foreach (var ns in _usings)
{
options.AddUsing(ns);
}
options.IncludeUsings = _includeUsings;
options.IncludeNamespace = _includeNamespace;
options.IncludeComments = _includeComments;
options.UseDebugAssertForAsserts = _useDebugAssertForAsserts;
options.WarningEncountered += options_WarningEncountered;
options.StateChanged += options_StateChanged;
Task.Run(() =>
{
try
{
var csharp = JavaToCSharpConverter.ConvertText(JavaText, options);
Dispatcher.CurrentDispatcher.Invoke(() => this.CSharpText = csharp);
}
catch (Exception ex)
{
Dispatcher.CurrentDispatcher.Invoke(() =>
{
MessageBox.Show("There was an error converting the text to C#: " + ex.Message);
});
}
});
}
public ConversionContext(JavaConversionOptions options)
{
PendingAnonymousTypes = new Queue<ClassDeclarationSyntax>();
UsedAnonymousTypeNames = new HashSet<string>();
this.Options = options;
}
public ConversionContext(JavaConversionOptions options)
{
PendingAnonymousTypes = new Queue <ClassDeclarationSyntax>();
UsedAnonymousTypeNames = new HashSet <string>();
Options = options;
}
