func (g *objcGen) genInterfaceM(obj *types.TypeName, t *types.Interface) bool {
summary := makeIfaceSummary(t)
// @implementation Interface -- similar to what genStructM does.
g.Printf("@implementation %s%s {\n", g.namePrefix, obj.Name())
g.Printf("}\n")
g.Printf("\n")
g.Printf("- (id)initWithRef:(id)ref {\n")
g.Indent()
g.Printf("self = [super init];\n")
g.Printf("if (self) { __ref = ref; }\n")
g.Printf("return self;\n")
g.Outdent()
g.Printf("}\n")
g.Printf("\n")
for _, m := range summary.callable {
if !g.isSigSupported(m.Type()) {
g.Printf("// skipped method %s.%s with unsupported parameter or return types\n\n", obj.Name(), m.Name())
continue
}
s := g.funcSummary(m)
g.Printf("- %s {\n", s.asMethod(g))
g.Indent()
g.genFunc(s, obj.Name())
g.Outdent()
g.Printf("}\n\n")
}
g.Printf("@end\n")
g.Printf("\n")
return summary.implementable
}
func (g *JavaGen) genJNIField(o *types.TypeName, f *types.Var) {
if t := f.Type(); !g.isSupported(t) {
g.Printf("// skipped field %s with unsupported type: %T\n\n", o.Name(), t)
return
}
// setter
g.Printf("JNIEXPORT void JNICALL\n")
g.Printf("Java_%s_%s_set%s(JNIEnv *env, jobject this, %s v) {\n", g.jniPkgName(), o.Name(), f.Name(), g.jniType(f.Type()))
g.Indent()
g.Printf("int32_t o = go_seq_to_refnum_go(env, this);\n")
g.genJavaToC("v", f.Type(), modeRetained)
g.Printf("proxy%s_%s_%s_Set(o, _v);\n", g.pkgPrefix, o.Name(), f.Name())
g.genRelease("v", f.Type(), modeRetained)
g.Outdent()
g.Printf("}\n\n")
// getter
g.Printf("JNIEXPORT %s JNICALL\n", g.jniType(f.Type()))
g.Printf("Java_%s_%s_get%s(JNIEnv *env, jobject this) {\n", g.jniPkgName(), o.Name(), f.Name())
g.Indent()
g.Printf("int32_t o = go_seq_to_refnum_go(env, this);\n")
g.Printf("%s r0 = ", g.cgoType(f.Type()))
g.Printf("proxy%s_%s_%s_Get(o);\n", g.pkgPrefix, o.Name(), f.Name())
g.genCToJava("_r0", "r0", f.Type(), modeRetained)
g.Printf("return _r0;\n")
g.Outdent()
g.Printf("}\n\n")
}
func (g *objcGen) genInterfaceH(obj *types.TypeName, t *types.Interface) {
g.Printf("@protocol %s%s\n", g.namePrefix, obj.Name())
for _, m := range exportedMethodSet(obj.Type()) {
s := g.funcSummary(m)
g.Printf("- %s;\n", s.asMethod(g))
}
g.Printf("@end\n")
}
func (g *javaGen) genFromRefnum(toName, fromName string, t types.Type, o *types.TypeName) {
oPkg := o.Pkg()
if !g.validPkg(oPkg) {
g.errorf("type %s is defined in package %s, which is not bound", t, oPkg)
return
}
p := pkgPrefix(oPkg)
g.Printf("jobject %s = go_seq_from_refnum(env, %s, proxy_class_%s_%s, proxy_class_%s_%s_cons);\n", toName, fromName, p, o.Name(), p, o.Name())
}
func (g *ObjcGen) genStructM(obj *types.TypeName, t *types.Struct) {
fields := exportedFields(t)
methods := exportedMethodSet(types.NewPointer(obj.Type()))
g.Printf("\n")
oinf := g.ostructs[obj]
g.Printf("@implementation %s%s {\n", g.namePrefix, obj.Name())
g.Printf("}\n\n")
g.Printf("- (id)initWithRef:(id)ref {\n")
g.Indent()
g.Printf("self = [super init];\n")
g.Printf("if (self) { __ref = ref; }\n")
g.Printf("return self;\n")
g.Outdent()
g.Printf("}\n\n")
if oinf != nil {
g.Printf("- (id)init {\n")
g.Indent()
g.Printf("self = [super init];\n")
g.Printf("if (self) {\n")
g.Indent()
g.Printf("__ref = go_seq_from_refnum(new_%s_%s());\n", g.pkgPrefix, obj.Name())
g.Outdent()
g.Printf("}\n")
g.Printf("return self;\n")
g.Outdent()
g.Printf("}\n\n")
}
for _, f := range fields {
if !g.isSupported(f.Type()) {
g.Printf("// skipped unsupported field %s with type %T\n\n", f.Name(), f)
continue
}
g.genGetter(obj.Name(), f)
g.genSetter(obj.Name(), f)
}
for _, m := range methods {
if !g.isSigSupported(m.Type()) {
g.Printf("// skipped method %s.%s with unsupported parameter or return types\n\n", obj.Name(), m.Name())
continue
}
s := g.funcSummary(g.ostructs[obj], m)
g.Printf("- %s {\n", s.asMethod(g))
g.Indent()
g.genFunc(s, obj.Name())
g.Outdent()
g.Printf("}\n\n")
}
g.Printf("@end\n\n")
}
func (g *objcGen) genInterfaceM2(obj *types.TypeName, t *types.Interface) bool {
summary := makeIfaceSummary(t)
desc := fmt.Sprintf("_GO_%s_%s", g.pkgName, obj.Name())
// @implementation Interface -- similar to what genStructM does.
g.Printf("@implementation %s%s {\n", g.namePrefix, obj.Name())
g.Printf("}\n")
g.Printf("\n")
g.Printf("- (id)initWithRef:(id)ref {\n")
g.Indent()
g.Printf("self = [super init];\n")
g.Printf("if (self) { _ref = ref; }\n")
g.Printf("return self;\n")
g.Outdent()
g.Printf("}\n")
g.Printf("\n")
for _, m := range summary.callable {
s := g.funcSummary(m)
g.Printf("- %s {\n", s.asMethod(g))
g.Indent()
g.genFunc(desc+"_DESCRIPTOR_", desc+"_"+m.Name()+"_", s, true)
g.Outdent()
g.Printf("}\n\n")
}
g.Printf("@end\n")
g.Printf("\n")
// proxy function.
if summary.implementable {
g.Printf("static void proxy%s%s(id obj, int code, GoSeq* in, GoSeq* out) {\n", g.namePrefix, obj.Name())
g.Indent()
g.Printf("switch (code) {\n")
for _, m := range summary.callable {
g.Printf("case %s_%s_: {\n", desc, m.Name())
g.Indent()
g.genInterfaceMethodProxy(obj, g.funcSummary(m))
g.Outdent()
g.Printf("} break;\n")
}
g.Printf("default:\n")
g.Indent()
g.Printf("NSLog(@\"unknown code %%x for %s_DESCRIPTOR_\", code);\n", desc)
g.Outdent()
g.Printf("}\n")
g.Outdent()
g.Printf("}\n")
}
return summary.implementable
}
func (g *objcGen) genInterfaceH(obj *types.TypeName, t *types.Interface) {
summary := makeIfaceSummary(t)
if !summary.implementable {
g.genInterfaceInterface(obj, summary, false)
return
}
g.Printf("@protocol %s%s\n", g.namePrefix, obj.Name())
for _, m := range makeIfaceSummary(t).callable {
s := g.funcSummary(m)
g.Printf("- %s;\n", s.asMethod(g))
}
g.Printf("@end\n")
}
func newStruct(p *Package, obj *types.TypeName) (Struct, error) {
sym := p.syms.symtype(obj.Type())
if sym == nil {
panic(fmt.Errorf("no such object [%s] in symbols table", obj.Id()))
}
sym.doc = p.getDoc("", obj)
s := Struct{
pkg: p,
sym: sym,
obj: obj,
}
return s, nil
}
func (g *objcGen) genInterfaceInterface(obj *types.TypeName, summary ifaceSummary, isProtocol bool) {
g.Printf("@interface %[1]s%[2]s : NSObject", g.namePrefix, obj.Name())
if isProtocol {
g.Printf(" <%[1]s%[2]s>", g.namePrefix, obj.Name())
}
g.Printf(" {\n}\n")
g.Printf("@property(strong, readonly) id _ref;\n")
g.Printf("\n")
g.Printf("- (id)initWithRef:(id)ref;\n")
for _, m := range summary.callable {
s := g.funcSummary(m)
g.Printf("- %s;\n", s.asMethod(g))
}
g.Printf("@end\n")
}
func (g *JavaGen) genFromRefnum(toName, fromName string, t types.Type, o *types.TypeName) {
oPkg := o.Pkg()
isJava := isJavaType(o.Type())
if !isErrorType(o.Type()) && !g.validPkg(oPkg) && !isJava {
g.errorf("type %s is defined in package %s, which is not bound", t, oPkg)
return
}
p := pkgPrefix(oPkg)
g.Printf("jobject %s = go_seq_from_refnum(env, %s, ", toName, fromName)
if isJava {
g.Printf("NULL, NULL")
} else {
g.Printf("proxy_class_%s_%s, proxy_class_%s_%s_cons", p, o.Name(), p, o.Name())
}
g.Printf(");\n")
}
func (g *ObjcGen) genInterfaceH(obj *types.TypeName, t *types.Interface) {
summary := makeIfaceSummary(t)
if !summary.implementable {
g.genInterfaceInterface(obj, summary, false)
return
}
g.Printf("@protocol %s%s <NSObject>\n", g.namePrefix, obj.Name())
for _, m := range makeIfaceSummary(t).callable {
if !g.isSigSupported(m.Type()) {
g.Printf("// skipped method %s.%s with unsupported parameter or return types\n\n", obj.Name(), m.Name())
continue
}
s := g.funcSummary(nil, m)
g.Printf("- %s;\n", s.asMethod(g))
}
g.Printf("@end\n")
}
// methodsFor returns the named type and corresponding methods if the type
// denoted by obj is not an interface and has methods. Otherwise it returns
// the zero value.
func methodsFor(obj *types.TypeName) (*types.Named, []*types.Selection) {
named, _ := obj.Type().(*types.Named)
if named == nil {
// A type name's type can also be the
// exported basic type unsafe.Pointer.
return nil, nil
}
if _, ok := named.Underlying().(*types.Interface); ok {
// ignore interfaces
return nil, nil
}
methods := combinedMethodSet(named)
if len(methods) == 0 {
return nil, nil
}
return named, methods
}
func (g *objcGen) genInterfaceM1(obj *types.TypeName, t *types.Interface) bool {
summary := makeIfaceSummary(t)
desc := fmt.Sprintf("_GO_%s_%s", g.pkgName, obj.Name())
g.Printf("#define %s_DESCRIPTOR_ \"go.%s.%s\"\n", desc, g.pkgName, obj.Name())
for i, m := range summary.callable {
g.Printf("#define %s_%s_ (0x%x0a)\n", desc, m.Name(), i+1)
}
g.Printf("\n")
if summary.implementable {
// @interface Interface -- similar to what genStructH does.
g.genInterfaceInterface(obj, summary, true)
}
return summary.implementable
}
func methodDocComment(prog *loader.Program, tname *types.TypeName, methodName string) (string, error) {
t := tname.Type()
if !types.IsInterface(t) {
// Use the pointer type to get as many methods as possible.
t = types.NewPointer(t)
}
mset := types.NewMethodSet(t)
sel := mset.Lookup(nil, methodName)
if sel == nil {
return "", errgo.Newf("cannot find method %v on %v", methodName, t)
}
obj := sel.Obj()
decl, err := findDecl(prog, obj.Pos())
if err != nil {
return "", errgo.Mask(err)
}
switch decl := decl.(type) {
case *ast.GenDecl:
if decl.Tok != token.TYPE {
return "", errgo.Newf("found non-type decl %#v", decl)
}
for _, spec := range decl.Specs {
tspec := spec.(*ast.TypeSpec)
it := tspec.Type.(*ast.InterfaceType)
for _, m := range it.Methods.List {
for _, id := range m.Names {
if id.Pos() == obj.Pos() {
return m.Doc.Text(), nil
}
}
}
}
return "", errgo.Newf("method definition not found in type")
case *ast.FuncDecl:
if decl.Name.Pos() != obj.Pos() {
return "", errgo.Newf("method definition not found (at %#v)", prog.Fset.Position(obj.Pos()))
}
return decl.Doc.Text(), nil
default:
return "", errgo.Newf("unexpected declaration %T found", decl)
}
}
func (g *objcGen) genInterfaceInterface(obj *types.TypeName, summary ifaceSummary, isProtocol bool) {
g.Printf("@interface %[1]s%[2]s : NSObject", g.namePrefix, obj.Name())
if isProtocol {
g.Printf(" <%[1]s%[2]s>", g.namePrefix, obj.Name())
}
g.Printf(" {\n}\n")
g.Printf("@property(strong, readonly) id _ref;\n")
g.Printf("\n")
g.Printf("- (id)initWithRef:(id)ref;\n")
for _, m := range summary.callable {
if !g.isSigSupported(m.Type()) {
g.Printf("// skipped method %s.%s with unsupported parameter or return types\n\n", obj.Name(), m.Name())
return
}
s := g.funcSummary(m)
g.Printf("- %s;\n", s.asMethod(g))
}
g.Printf("@end\n")
}
func typeDocComment(prog *loader.Program, t *types.TypeName) (string, error) {
decl, err := findDecl(prog, t.Pos())
if err != nil {
return "", errgo.Mask(err)
}
tdecl, ok := decl.(*ast.GenDecl)
if !ok || tdecl.Tok != token.TYPE {
return "", errgo.Newf("found non-type decl %#v", decl)
}
for _, spec := range tdecl.Specs {
tspec := spec.(*ast.TypeSpec)
if tspec.Name.Pos() == t.Pos() {
if tspec.Doc != nil {
return tspec.Doc.Text(), nil
}
return tdecl.Doc.Text(), nil
}
}
return "", errgo.Newf("cannot find type declaration")
}
func (g *objcGen) genStructH(obj *types.TypeName, t *types.Struct) {
g.Printf("@interface %s%s : NSObject {\n", g.namePrefix, obj.Name())
g.Printf("}\n")
g.Printf("@property(strong, readonly) id _ref;\n")
g.Printf("\n")
g.Printf("- (id)initWithRef:(id)ref;\n")
// accessors to exported fields.
for _, f := range exportedFields(t) {
name, typ := f.Name(), g.objcFieldType(f.Type())
g.Printf("- (%s)%s;\n", typ, lowerFirst(name))
g.Printf("- (void)set%s:(%s)v;\n", name, typ)
}
// exported methods
for _, m := range exportedMethodSet(types.NewPointer(obj.Type())) {
s := g.funcSummary(m)
g.Printf("- %s;\n", lowerFirst(s.asMethod(g)))
}
g.Printf("@end\n")
}
func (g *objcGen) genStructH(obj *types.TypeName, t *types.Struct) {
g.Printf("@interface %s%s : NSObject {\n", g.namePrefix, obj.Name())
g.Printf("}\n")
g.Printf("@property(strong, readonly) id _ref;\n")
g.Printf("\n")
g.Printf("- (id)initWithRef:(id)ref;\n")
// accessors to exported fields.
for _, f := range exportedFields(t) {
if t := f.Type(); !g.isSupported(t) {
g.Printf("// skipped field %s.%s with unsupported type: %T\n\n", obj.Name(), f.Name(), t)
continue
}
name, typ := f.Name(), g.objcFieldType(f.Type())
g.Printf("- (%s)%s;\n", typ, lowerFirst(name))
g.Printf("- (void)set%s:(%s)v;\n", name, typ)
}
// exported methods
for _, m := range exportedMethodSet(types.NewPointer(obj.Type())) {
if !g.isSigSupported(m.Type()) {
g.Printf("// skipped method %s.%s with unsupported parameter or return types\n\n", obj.Name(), m.Name())
continue
}
s := g.funcSummary(m)
g.Printf("- %s;\n", lowerFirst(s.asMethod(g)))
}
g.Printf("@end\n")
}
func (g *ObjcGen) genInterfaceInterface(obj *types.TypeName, summary ifaceSummary, isProtocol bool) {
g.Printf("@interface %[1]s%[2]s : ", g.namePrefix, obj.Name())
if isErrorType(obj.Type()) {
g.Printf("NSError")
} else {
g.Printf("NSObject")
}
prots := []string{"goSeqRefInterface"}
if isProtocol {
prots = append(prots, fmt.Sprintf("%[1]s%[2]s", g.namePrefix, obj.Name()))
}
g.Printf(" <%s>", strings.Join(prots, ", "))
g.Printf(" {\n}\n")
g.Printf("@property(strong, readonly) id _ref;\n")
g.Printf("\n")
g.Printf("- (instancetype)initWithRef:(id)ref;\n")
for _, m := range summary.callable {
if !g.isSigSupported(m.Type()) {
g.Printf("// skipped method %s.%s with unsupported parameter or return types\n\n", obj.Name(), m.Name())
continue
}
s := g.funcSummary(nil, m)
g.Printf("- %s;\n", s.asMethod(g))
}
g.Printf("@end\n")
}
func (w *Walker) emitType(obj *types.TypeName) {
name := obj.Name()
typ := obj.Type()
switch typ := typ.Underlying().(type) {
case *types.Struct:
w.emitStructType(name, typ)
case *types.Interface:
w.emitIfaceType(name, typ)
return // methods are handled by emitIfaceType
default:
w.emitf("type %s %s", name, w.typeString(typ.Underlying()))
}
// emit methods with value receiver
var methodNames map[string]bool
vset := types.NewMethodSet(typ)
for i, n := 0, vset.Len(); i < n; i++ {
m := vset.At(i)
if m.Obj().Exported() {
w.emitMethod(m)
if methodNames == nil {
methodNames = make(map[string]bool)
}
methodNames[m.Obj().Name()] = true
}
}
// emit methods with pointer receiver; exclude
// methods that we have emitted already
// (the method set of *T includes the methods of T)
pset := types.NewMethodSet(types.NewPointer(typ))
for i, n := 0, pset.Len(); i < n; i++ {
m := pset.At(i)
if m.Obj().Exported() && !methodNames[m.Obj().Name()] {
w.emitMethod(m)
}
}
}
func (g *objcGen) genStructM(obj *types.TypeName, t *types.Struct) {
fields := exportedFields(t)
methods := exportedMethodSet(types.NewPointer(obj.Type()))
desc := fmt.Sprintf("_GO_%s_%s", g.pkgName, obj.Name())
g.Printf("#define %s_DESCRIPTOR_ \"go.%s.%s\"\n", desc, g.pkgName, obj.Name())
for i, f := range fields {
g.Printf("#define %s_FIELD_%s_GET_ (0x%x0f)\n", desc, f.Name(), i)
g.Printf("#define %s_FIELD_%s_SET_ (0x%x1f)\n", desc, f.Name(), i)
}
for i, m := range methods {
g.Printf("#define %s_%s_ (0x%x0c)\n", desc, m.Name(), i)
}
g.Printf("\n")
g.Printf("@implementation %s%s {\n", g.namePrefix, obj.Name())
g.Printf("}\n\n")
g.Printf("- (id)initWithRef:(id)ref {\n")
g.Indent()
g.Printf("self = [super init];\n")
g.Printf("if (self) { __ref = ref; }\n")
g.Printf("return self;\n")
g.Outdent()
g.Printf("}\n\n")
for _, f := range fields {
g.genGetter(desc, f)
g.genSetter(desc, f)
}
for _, m := range methods {
s := g.funcSummary(m)
g.Printf("- %s {\n", s.asMethod(g))
g.Indent()
g.genFunc(desc+"_DESCRIPTOR_", desc+"_"+m.Name()+"_", s, true)
g.Outdent()
g.Printf("}\n\n")
}
g.Printf("@end\n")
}
func (g *ObjcGen) genStructH(obj *types.TypeName, t *types.Struct) {
g.Printf("@interface %s%s : ", g.namePrefix, obj.Name())
oinf := g.ostructs[obj]
if oinf != nil {
var prots []string
for _, sup := range oinf.supers {
if !sup.Protocol {
g.Printf(sup.Name)
} else {
prots = append(prots, sup.Name)
}
}
if len(prots) > 0 {
g.Printf(" <%s>", strings.Join(prots, ", "))
}
} else {
g.Printf("NSObject <goSeqRefInterface>")
}
g.Printf(" {\n")
g.Printf("}\n")
g.Printf("@property(strong, readonly) id _ref;\n")
g.Printf("\n")
g.Printf("- (id)initWithRef:(id)ref;\n")
if oinf != nil {
g.Printf("- (id)init;\n")
}
// accessors to exported fields.
for _, f := range exportedFields(t) {
if t := f.Type(); !g.isSupported(t) {
g.Printf("// skipped field %s.%s with unsupported type: %T\n\n", obj.Name(), f.Name(), t)
continue
}
name, typ := f.Name(), g.objcFieldType(f.Type())
g.Printf("- (%s)%s;\n", typ, objcNameReplacer(lowerFirst(name)))
g.Printf("- (void)set%s:(%s)v;\n", name, typ)
}
// exported methods
for _, m := range exportedMethodSet(types.NewPointer(obj.Type())) {
if !g.isSigSupported(m.Type()) {
g.Printf("// skipped method %s.%s with unsupported parameter or return types\n\n", obj.Name(), m.Name())
continue
}
s := g.funcSummary(g.ostructs[obj], m)
g.Printf("- %s;\n", objcNameReplacer(lowerFirst(s.asMethod(g))))
}
g.Printf("@end\n")
}
func (g *javaGen) genInterface(o *types.TypeName) {
iface := o.Type().(*types.Named).Underlying().(*types.Interface)
summary := makeIfaceSummary(iface)
g.Printf("public interface %s extends go.Seq.Object {\n", o.Name())
g.Indent()
methodSigErr := false
for _, m := range summary.callable {
if err := g.funcSignature(m, false); err != nil {
methodSigErr = true
g.errorf("%v", err)
}
g.Printf(";\n\n")
}
if methodSigErr {
return // skip stub generation, more of the same errors
}
if summary.implementable {
g.genInterfaceStub(o, iface)
}
g.Printf(javaProxyPreamble, o.Name())
g.Indent()
for _, m := range summary.callable {
g.genFunc(m, true)
}
for i, m := range summary.callable {
g.Printf("static final int CALL_%s = 0x%x0a;\n", m.Name(), i+1)
}
g.Outdent()
g.Printf("}\n")
g.Outdent()
g.Printf("}\n\n")
}
func (g *ObjcGen) genInterfaceM(obj *types.TypeName, t *types.Interface) bool {
summary := makeIfaceSummary(t)
// @implementation Interface -- similar to what genStructM does.
g.Printf("@implementation %s%s {\n", g.namePrefix, obj.Name())
g.Printf("}\n")
g.Printf("\n")
g.Printf("- (instancetype)initWithRef:(id)ref {\n")
g.Indent()
if isErrorType(obj.Type()) {
g.Printf("if (self) {\n")
g.Printf(" __ref = ref;\n")
g.Printf(" self = [super initWithDomain:@\"go\" code:1 userInfo:@{NSLocalizedDescriptionKey: [self error]}];\n")
g.Printf("}\n")
} else {
g.Printf("self = [super init];\n")
g.Printf("if (self) { __ref = ref; }\n")
}
g.Printf("return self;\n")
g.Outdent()
g.Printf("}\n")
g.Printf("\n")
for _, m := range summary.callable {
if !g.isSigSupported(m.Type()) {
g.Printf("// skipped method %s.%s with unsupported parameter or return types\n\n", obj.Name(), m.Name())
continue
}
s := g.funcSummary(nil, m)
g.Printf("- %s {\n", s.asMethod(g))
g.Indent()
g.genFunc(s, obj.Name())
g.Outdent()
g.Printf("}\n\n")
}
g.Printf("@end\n")
g.Printf("\n")
return summary.implementable
}
func (g *javaGen) genInterface(o *types.TypeName) {
iface := o.Type().(*types.Named).Underlying().(*types.Interface)
g.Printf("public interface %s extends go.Seq.Object {\n", o.Name())
g.Indent()
methodSigErr := false
for i := 0; i < iface.NumMethods(); i++ {
if err := g.funcSignature(iface.Method(i), false); err != nil {
methodSigErr = true
g.errorf("%v", err)
}
g.Printf(";\n\n")
}
if methodSigErr {
return // skip stub generation, more of the same errors
}
g.genInterfaceStub(o, iface)
g.Printf(javaProxyPreamble, o.Name())
g.Indent()
for i := 0; i < iface.NumMethods(); i++ {
g.genFunc(iface.Method(i), true)
}
for i := 0; i < iface.NumMethods(); i++ {
g.Printf("static final int CALL_%s = 0x%x0a;\n", iface.Method(i).Name(), i+1)
}
g.Outdent()
g.Printf("}\n")
g.Outdent()
g.Printf("}\n\n")
}
func (c *converter) convertTypeName(v *gotypes.TypeName) *types.TypeName {
if v == nil {
return nil
}
if v, ok := c.converted[v]; ok {
return v.(*types.TypeName)
}
// This part is a bit tricky. gcimport calls NewTypeName with a nil typ
// argument, and then calls NewNamed on the resulting *TypeName, which
// sets its typ to a *Named referring to itself. So if we get a *TypeName
// whose Type() is a *Named whose Obj() is the same *TypeName, we know it
// was constructed this way, so we do the same. Otherwise we get into a
// infinite recursion converting the *TypeName's type.
var typ types.Type
if named, ok := v.Type().(*gotypes.Named); !ok || named.Obj() != v {
typ = c.convertType(v.Type())
}
ret := types.NewTypeName(
token.Pos(v.Pos()),
c.convertPackage(v.Pkg()),
v.Name(),
typ,
)
c.converted[v] = ret
named := types.NewNamed(ret, c.convertType(v.Type().Underlying()), nil)
c.converted[v.Type()] = named
return ret
}
func (g *javaGen) genStruct(obj *types.TypeName, T *types.Struct) {
fields := exportedFields(T)
methods := exportedMethodSet(types.NewPointer(obj.Type()))
g.Printf("public static final class %s implements go.Seq.Object {\n", obj.Name())
g.Indent()
g.Printf("private static final String DESCRIPTOR = \"go.%s.%s\";\n", g.pkg.Name(), obj.Name())
for i, f := range fields {
g.Printf("private static final int FIELD_%s_GET = 0x%x0f;\n", f.Name(), i)
g.Printf("private static final int FIELD_%s_SET = 0x%x1f;\n", f.Name(), i)
}
for i, m := range methods {
g.Printf("private static final int CALL_%s = 0x%x0c;\n", m.Name(), i)
}
g.Printf("\n")
g.Printf("private go.Seq.Ref ref;\n\n")
n := obj.Name()
g.Printf("private %s(go.Seq.Ref ref) { this.ref = ref; }\n\n", n)
g.Printf(`public go.Seq.Ref ref() { return ref; }
public void call(int code, go.Seq in, go.Seq out) {
throw new RuntimeException("internal error: cycle: cannot call concrete proxy");
}
`)
for _, f := range fields {
g.Printf("public %s get%s() {\n", g.javaType(f.Type()), f.Name())
g.Indent()
g.Printf("Seq in = new Seq();\n")
g.Printf("Seq out = new Seq();\n")
g.Printf("in.writeRef(ref);\n")
g.Printf("Seq.send(DESCRIPTOR, FIELD_%s_GET, in, out);\n", f.Name())
if seqType(f.Type()) == "Ref" {
g.Printf("return new %s(out.read%s);\n", g.javaType(f.Type()), seqRead(f.Type()))
} else {
g.Printf("return out.read%s;\n", seqRead(f.Type()))
}
g.Outdent()
g.Printf("}\n\n")
g.Printf("public void set%s(%s v) {\n", f.Name(), g.javaType(f.Type()))
g.Indent()
g.Printf("Seq in = new Seq();\n")
g.Printf("Seq out = new Seq();\n")
g.Printf("in.writeRef(ref);\n")
g.Printf("in.write%s;\n", seqWrite(f.Type(), "v"))
g.Printf("Seq.send(DESCRIPTOR, FIELD_%s_SET, in, out);\n", f.Name())
g.Outdent()
g.Printf("}\n\n")
}
for _, m := range methods {
g.genFunc(m, true)
}
g.Printf("@Override public boolean equals(Object o) {\n")
g.Indent()
g.Printf("if (o == null || !(o instanceof %s)) {\n return false;\n}\n", n)
g.Printf("%s that = (%s)o;\n", n, n)
for _, f := range fields {
nf := f.Name()
g.Printf("%s this%s = get%s();\n", g.javaType(f.Type()), nf, nf)
g.Printf("%s that%s = that.get%s();\n", g.javaType(f.Type()), nf, nf)
if isJavaPrimitive(f.Type()) {
g.Printf("if (this%s != that%s) {\n return false;\n}\n", nf, nf)
} else {
g.Printf("if (this%s == null) {\n", nf)
g.Indent()
g.Printf("if (that%s != null) {\n return false;\n}\n", nf)
g.Outdent()
g.Printf("} else if (!this%s.equals(that%s)) {\n return false;\n}\n", nf, nf)
}
}
g.Printf("return true;\n")
g.Outdent()
g.Printf("}\n\n")
g.Printf("@Override public int hashCode() {\n")
g.Printf(" return java.util.Arrays.hashCode(new Object[] {")
for i, f := range fields {
if i > 0 {
g.Printf(", ")
}
g.Printf("get%s()", f.Name())
}
g.Printf("});\n")
g.Printf("}\n\n")
// TODO(crawshaw): use String() string if it is defined.
g.Printf("@Override public String toString() {\n")
g.Indent()
g.Printf("StringBuilder b = new StringBuilder();\n")
g.Printf(`b.append("%s").append("{");`, obj.Name())
g.Printf("\n")
for _, f := range fields {
n := f.Name()
g.Printf(`b.append("%s:").append(get%s()).append(",");`, n, n)
g.Printf("\n")
}
g.Printf(`return b.append("}").toString();`)
g.Printf("\n")
g.Outdent()
g.Printf("}\n\n")
g.Outdent()
g.Printf("}\n\n")
}
func (g *javaGen) genInterfaceStub(o *types.TypeName, m *types.Interface) {
g.Printf("public static abstract class Stub implements %s {\n", o.Name())
g.Indent()
g.Printf("static final String DESCRIPTOR = \"go.%s.%s\";\n\n", g.pkg.Name(), o.Name())
g.Printf("private final go.Seq.Ref ref;\n")
g.Printf("public Stub() {\n ref = go.Seq.createRef(this);\n}\n\n")
g.Printf("public go.Seq.Ref ref() { return ref; }\n\n")
g.Printf("public void call(int code, go.Seq in, go.Seq out) {\n")
g.Indent()
g.Printf("switch (code) {\n")
for i := 0; i < m.NumMethods(); i++ {
f := m.Method(i)
g.Printf("case Proxy.CALL_%s: {\n", f.Name())
g.Indent()
sig := f.Type().(*types.Signature)
params := sig.Params()
for i := 0; i < params.Len(); i++ {
p := sig.Params().At(i)
jt := g.javaType(p.Type())
g.Printf("%s param_%s;\n", jt, paramName(params, i))
g.genRead("param_"+paramName(params, i), "in", p.Type())
}
res := sig.Results()
var returnsError bool
var numRes = res.Len()
if (res.Len() == 1 && isErrorType(res.At(0).Type())) ||
(res.Len() == 2 && isErrorType(res.At(1).Type())) {
numRes -= 1
returnsError = true
}
if returnsError {
g.Printf("try {\n")
g.Indent()
}
if numRes > 0 {
g.Printf("%s result = ", g.javaType(res.At(0).Type()))
}
g.Printf("this.%s(", f.Name())
for i := 0; i < params.Len(); i++ {
if i > 0 {
g.Printf(", ")
}
g.Printf("param_%s", paramName(params, i))
}
g.Printf(");\n")
if numRes > 0 {
g.Printf("out.write%s;\n", seqWrite(res.At(0).Type(), "result"))
}
if returnsError {
g.Printf("out.writeString(null);\n")
g.Outdent()
g.Printf("} catch (Exception e) {\n")
g.Indent()
if numRes > 0 {
resTyp := res.At(0).Type()
g.Printf("%s result = %s;\n", g.javaType(resTyp), g.javaTypeDefault(resTyp))
g.Printf("out.write%s;\n", seqWrite(resTyp, "result"))
}
g.Printf("out.writeString(e.getMessage());\n")
g.Outdent()
g.Printf("}\n")
}
g.Printf("return;\n")
g.Outdent()
g.Printf("}\n")
}
g.Printf("default:\n throw new RuntimeException(\"unknown code: \"+ code);\n")
g.Printf("}\n")
g.Outdent()
g.Printf("}\n")
g.Outdent()
g.Printf("}\n\n")
}
func (g *goGen) genInterface(obj *types.TypeName) {
iface := obj.Type().(*types.Named).Underlying().(*types.Interface)
ifaceDesc := fmt.Sprintf("go.%s.%s", g.pkg.Name(), obj.Name())
summary := makeIfaceSummary(iface)
// Descriptor and code for interface methods.
g.Printf("const (\n")
g.Indent()
g.Printf("proxy%s_Descriptor = %q\n", obj.Name(), ifaceDesc)
for i, m := range summary.callable {
g.Printf("proxy%s_%s_Code = 0x%x0a\n", obj.Name(), m.Name(), i+1)
}
g.Outdent()
g.Printf(")\n\n")
// Define the entry points.
for _, m := range summary.callable {
g.Printf("func proxy%s_%s(out, in *seq.Buffer) {\n", obj.Name(), m.Name())
g.Indent()
g.Printf("ref := in.ReadRef()\n")
g.Printf("v := ref.Get().(%s.%s)\n", g.pkg.Name(), obj.Name())
g.genFuncBody(m, "v")
g.Outdent()
g.Printf("}\n\n")
}
// Register the method entry points.
if len(summary.callable) > 0 {
g.Printf("func init() {\n")
g.Indent()
for _, m := range summary.callable {
g.Printf("seq.Register(proxy%s_Descriptor, proxy%s_%s_Code, proxy%s_%s)\n",
obj.Name(), obj.Name(), m.Name(), obj.Name(), m.Name())
}
g.Outdent()
g.Printf("}\n\n")
}
// Define a proxy interface.
if !summary.implementable {
// The interface defines an unexported method or a method that
// uses an unexported type. We cannot generate a proxy object
// for such a type.
return
}
g.Printf("type proxy%s seq.Ref\n\n", obj.Name())
for i := 0; i < iface.NumMethods(); i++ {
m := iface.Method(i)
sig := m.Type().(*types.Signature)
params := sig.Params()
res := sig.Results()
if res.Len() > 2 ||
(res.Len() == 2 && !isErrorType(res.At(1).Type())) {
g.errorf("functions and methods must return either zero or one value, and optionally an error: %s.%s", obj.Name(), m.Name())
continue
}
g.Printf("func (p *proxy%s) %s(", obj.Name(), m.Name())
for i := 0; i < params.Len(); i++ {
if i > 0 {
g.Printf(", ")
}
g.Printf("%s %s", paramName(params, i), g.typeString(params.At(i).Type()))
}
g.Printf(") ")
if res.Len() == 1 {
g.Printf(g.typeString(res.At(0).Type()))
} else if res.Len() == 2 {
g.Printf("(%s, error)", g.typeString(res.At(0).Type()))
}
g.Printf(" {\n")
g.Indent()
g.Printf("in := new(seq.Buffer)\n")
for i := 0; i < params.Len(); i++ {
g.genWrite(paramName(params, i), "in", params.At(i).Type())
}
if res.Len() == 0 {
g.Printf("seq.Transact((*seq.Ref)(p), %q, proxy%s_%s_Code, in)\n", ifaceDesc, obj.Name(), m.Name())
} else {
g.Printf("out := seq.Transact((*seq.Ref)(p), %q, proxy%s_%s_Code, in)\n", ifaceDesc, obj.Name(), m.Name())
var rvs []string
for i := 0; i < res.Len(); i++ {
rv := fmt.Sprintf("res_%d", i)
g.genRead(rv, "out", res.At(i).Type())
rvs = append(rvs, rv)
}
g.Printf("return %s\n", strings.Join(rvs, ","))
}
g.Outdent()
g.Printf("}\n\n")
}
}
func (g *goGen) genStruct(obj *types.TypeName, T *types.Struct) {
fields := exportedFields(T)
methods := exportedMethodSet(types.NewPointer(obj.Type()))
g.Printf("const (\n")
g.Indent()
g.Printf("proxy%s_Descriptor = \"go.%s.%s\"\n", obj.Name(), g.pkg.Name(), obj.Name())
for i, f := range fields {
g.Printf("proxy%s_%s_Get_Code = 0x%x0f\n", obj.Name(), f.Name(), i)
g.Printf("proxy%s_%s_Set_Code = 0x%x1f\n", obj.Name(), f.Name(), i)
}
for i, m := range methods {
g.Printf("proxy%s_%s_Code = 0x%x0c\n", obj.Name(), m.Name(), i)
}
g.Outdent()
g.Printf(")\n\n")
g.Printf("type proxy%s seq.Ref\n\n", obj.Name())
for _, f := range fields {
g.Printf("func proxy%s_%s_Set(out, in *seq.Buffer) {\n", obj.Name(), f.Name())
g.Indent()
g.Printf("ref := in.ReadRef()\n")
g.genRead("v", "in", f.Type())
g.Printf("ref.Get().(*%s.%s).%s = v\n", g.pkg.Name(), obj.Name(), f.Name())
g.Outdent()
g.Printf("}\n\n")
g.Printf("func proxy%s_%s_Get(out, in *seq.Buffer) {\n", obj.Name(), f.Name())
g.Indent()
g.Printf("ref := in.ReadRef()\n")
g.Printf("v := ref.Get().(*%s.%s).%s\n", g.pkg.Name(), obj.Name(), f.Name())
g.genWrite("v", "out", f.Type())
g.Outdent()
g.Printf("}\n\n")
}
for _, m := range methods {
g.Printf("func proxy%s_%s(out, in *seq.Buffer) {\n", obj.Name(), m.Name())
g.Indent()
g.Printf("ref := in.ReadRef()\n")
g.Printf("v := ref.Get().(*%s.%s)\n", g.pkg.Name(), obj.Name())
g.genFuncBody(m, "v")
g.Outdent()
g.Printf("}\n\n")
}
g.Printf("func init() {\n")
g.Indent()
for _, f := range fields {
n := f.Name()
g.Printf("seq.Register(proxy%s_Descriptor, proxy%s_%s_Set_Code, proxy%s_%s_Set)\n", obj.Name(), obj.Name(), n, obj.Name(), n)
g.Printf("seq.Register(proxy%s_Descriptor, proxy%s_%s_Get_Code, proxy%s_%s_Get)\n", obj.Name(), obj.Name(), n, obj.Name(), n)
}
for _, m := range methods {
n := m.Name()
g.Printf("seq.Register(proxy%s_Descriptor, proxy%s_%s_Code, proxy%s_%s)\n", obj.Name(), obj.Name(), n, obj.Name(), n)
}
g.Outdent()
g.Printf("}\n\n")
}