using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using com.github.javaparser;
using com.github.javaparser.ast;
using com.github.javaparser.ast.body;
using com.github.javaparser.ast.type;
using JavaToCSharp.Declarations;
using Microsoft.CodeAnalysis;
using Microsoft.CodeAnalysis.CSharp;
using Microsoft.CodeAnalysis.CSharp.Syntax;
namespace JavaToCSharp
{
public static class JavaToCSharpConverter
{
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();
var imports = parsed.getImports().ToList();
var package = parsed.getPackage();
var usings = new List();
//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();
NamespaceDeclarationSyntax namespaceSyntax = null;
if (options.IncludeNamespace && package != null)
{
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 != null)
namespaceSyntax = namespaceSyntax.AddMembers(classSyntax);
else
rootMembers.Add(classSyntax);
}
}
}
if (options.IncludeNamespace && namespaceSyntax != null)
rootMembers.Add(namespaceSyntax);
var root = SyntaxFactory.CompilationUnit(
externs: new SyntaxList(),
usings: SyntaxFactory.List(usings.ToArray()),
attributeLists: new SyntaxList(),
members: SyntaxFactory.List(rootMembers))
.NormalizeWhitespace();
var tree = SyntaxFactory.SyntaxTree(root);
options.ConversionStateChanged(ConversionState.Done);
return tree.GetText().ToString();
}
}
private static InterfaceDeclarationSyntax VisitInterfaceDeclaration(ConversionContext context, ClassOrInterfaceDeclaration javai, bool isNested = false)
{
string name = "I" + javai.getName();
if (!isNested)
context.RootTypeName = name;
context.LastTypeName = name;
var classSyntax = SyntaxFactory.InterfaceDeclaration(name);
var typeParams = javai.getTypeParameters().ToList();
if (typeParams != null && typeParams.Count > 0)
{
classSyntax = classSyntax.AddTypeParameterListParameters(typeParams.Select(i => SyntaxFactory.TypeParameter(i.getName())).ToArray());
}
var mods = javai.getModifiers();
if (mods.HasFlag(Modifier.PRIVATE))
classSyntax = classSyntax.AddModifiers(SyntaxFactory.Token(SyntaxKind.PrivateKeyword));
if (mods.HasFlag(Modifier.PROTECTED))
classSyntax = classSyntax.AddModifiers(SyntaxFactory.Token(SyntaxKind.ProtectedKeyword));
if (mods.HasFlag(Modifier.PUBLIC))
classSyntax = classSyntax.AddModifiers(SyntaxFactory.Token(SyntaxKind.PublicKeyword));
if (mods.HasFlag(Modifier.FINAL))
classSyntax = classSyntax.AddModifiers(SyntaxFactory.Token(SyntaxKind.SealedKeyword));
var implements = javai.getImplements().ToList();
if (implements != null)
{
foreach (var implement in implements)
{
classSyntax = classSyntax.AddBaseListTypes(SyntaxFactory.SimpleBaseType(TypeHelper.GetSyntaxFromType(implement)));
}
}
var members = javai.getMembers().ToList();
foreach (var member in members)
{
var syntax = BodyDeclarationVisitor.VisitBodyDeclarationForInterface(context, classSyntax, member);
classSyntax = classSyntax.AddMembers(syntax);
}
return classSyntax;
}
private static ClassDeclarationSyntax VisitClassDeclaration(ConversionContext context, ClassOrInterfaceDeclaration javac, bool isNested = false)
{
string name = javac.getName();
if (!isNested)
context.RootTypeName = name;
context.LastTypeName = name;
var classSyntax = SyntaxFactory.ClassDeclaration(name);
var typeParams = javac.getTypeParameters().ToList();
if (typeParams != null && typeParams.Count > 0)
{
classSyntax = classSyntax.AddTypeParameterListParameters(typeParams.Select(i => SyntaxFactory.TypeParameter(i.getName())).ToArray());
}
var mods = javac.getModifiers();
if (mods.HasFlag(Modifier.PRIVATE))
classSyntax = classSyntax.AddModifiers(SyntaxFactory.Token(SyntaxKind.PrivateKeyword));
if (mods.HasFlag(Modifier.PROTECTED))
classSyntax = classSyntax.AddModifiers(SyntaxFactory.Token(SyntaxKind.ProtectedKeyword));
if (mods.HasFlag(Modifier.PUBLIC))
classSyntax = classSyntax.AddModifiers(SyntaxFactory.Token(SyntaxKind.PublicKeyword));
if (mods.HasFlag(Modifier.ABSTRACT))
classSyntax = classSyntax.AddModifiers(SyntaxFactory.Token(SyntaxKind.AbstractKeyword));
if (mods.HasFlag(Modifier.FINAL))
classSyntax = classSyntax.AddModifiers(SyntaxFactory.Token(SyntaxKind.SealedKeyword));
var extends = javac.getExtends().ToList();
if (extends != null)
{
foreach (var extend in extends)
{
classSyntax = classSyntax.AddBaseListTypes(SyntaxFactory.SimpleBaseType(TypeHelper.GetSyntaxFromType(extend)));
}
}
var implements = javac.getImplements().ToList();
if (implements != null)
{
foreach (var implement in implements)
{
classSyntax = classSyntax.AddBaseListTypes(SyntaxFactory.SimpleBaseType(TypeHelper.GetSyntaxFromType(implement, true)));
}
}
var members = javac.getMembers().ToList();
foreach (var member in members)
{
var childc = member as ClassOrInterfaceDeclaration;
if (childc != null)
{
if (childc.isInterface())
{
var childInt = VisitInterfaceDeclaration(context, childc, true);
classSyntax = classSyntax.AddMembers(childInt);
}
else
{
var childClass = VisitClassDeclaration(context, childc, true);
classSyntax = classSyntax.AddMembers(childClass);
}
}
else if (member is EmptyMemberDeclaration)
{
context.Options.Warning("Empty Member Declaration will not be ported. Check for correctness.", member.getBegin().line);
}
else
{
var syntax = BodyDeclarationVisitor.VisitBodyDeclarationForClass(context, classSyntax, member);
classSyntax = classSyntax.AddMembers(syntax);
}
while (context.PendingAnonymousTypes.Count > 0)
{
var anon = context.PendingAnonymousTypes.Dequeue();
classSyntax = classSyntax.AddMembers(anon);
}
}
var classDeclarationSyntax = classSyntax.AddComments(context, javac);
return classDeclarationSyntax;
}
}
}