| // Copyright 2016 The Go Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| package bind |
| |
| import ( |
| "path" |
| "strings" |
| |
| "golang.org/x/mobile/internal/importers/objc" |
| ) |
| |
| type ( |
| // ObjCWrapper generates Go and C stubs for ObjC interfaces and protocols. |
| ObjcWrapper struct { |
| *Printer |
| imported map[string]*objc.Named |
| // The list of ObjC types. |
| types []*objc.Named |
| // The list of Go package paths with ObjC wrappers. |
| pkgNames []string |
| modules []string |
| // For each ObjC module, the list of ObjC types within. |
| modMap map[string][]*objc.Named |
| // For each module/name Go package path, the ObjC type |
| // with static functions or constants. |
| typePkgs map[string]*objc.Named |
| // supers is the map of types that need Super methods. |
| supers map[string]struct{} |
| } |
| ) |
| |
| // Init initializes the ObjC types wrapper generator. Types is the |
| // list of types to wrap, genNames the list of generated type names. |
| func (g *ObjcWrapper) Init(types []*objc.Named, genNames []string) { |
| g.supers = make(map[string]struct{}) |
| for _, s := range genNames { |
| g.supers[s] = struct{}{} |
| } |
| g.types = types |
| g.imported = make(map[string]*objc.Named) |
| g.modMap = make(map[string][]*objc.Named) |
| g.typePkgs = make(map[string]*objc.Named) |
| pkgSet := make(map[string]struct{}) |
| for _, n := range types { |
| g.imported[n.GoName] = n |
| typePkg := n.Module + "/" + n.GoName |
| g.typePkgs[typePkg] = n |
| if !n.Generated { |
| if _, exists := g.modMap[n.Module]; !exists { |
| g.modules = append(g.modules, n.Module) |
| } |
| } |
| g.modMap[n.Module] = append(g.modMap[n.Module], n) |
| if _, exists := pkgSet[n.Module]; !exists { |
| pkgSet[n.Module] = struct{}{} |
| g.pkgNames = append(g.pkgNames, n.Module) |
| } |
| g.pkgNames = append(g.pkgNames, typePkg) |
| } |
| } |
| |
| func (g *ObjcWrapper) GenM() { |
| g.Printf("//File is generated by gobind. Do not edit.\n\n") |
| // For objc_msgSend* functions. |
| g.Printf("@import ObjectiveC.message;\n") |
| g.Printf("#include \"seq.h\"\n") |
| g.Printf("#include \"interfaces.h\"\n\n") |
| for _, n := range g.types { |
| g.genM(n) |
| } |
| g.Printf("\n") |
| for _, n := range g.types { |
| for _, f := range n.AllMethods { |
| if !g.isFuncSupported(f) { |
| continue |
| } |
| g.genCFuncDecl("cproxy", n.GoName, f) |
| g.genCFuncBody(n, f, false) |
| if _, exists := g.supers[n.GoName]; exists { |
| g.genCFuncDecl("csuper", n.GoName, f) |
| g.genCFuncBody(n, f, true) |
| } |
| } |
| } |
| } |
| |
| func (g *ObjcWrapper) genCFuncBody(n *objc.Named, f *objc.Func, super bool) { |
| g.Printf(" {\n") |
| g.Indent() |
| if !f.Static { |
| g.Printf("%s _this = go_seq_from_refnum(this).obj;\n", n.ObjcType()) |
| } |
| var errParam *objc.Param |
| for i, a := range f.Params { |
| if i == len(f.Params)-1 && g.isErrorType(a.Type) { |
| errParam = a |
| break |
| } |
| g.genCToObjC(a.Name, a.Type, modeTransient) |
| } |
| if errParam != nil { |
| g.Printf("NSError *%s = nil;\n", errParam.Name) |
| } |
| if f.Constructor { |
| g.Printf("%s _this = [%s alloc];\n", n.ObjcType(), n.Name) |
| } |
| if super { |
| g.Printf("struct objc_super _super = {\n") |
| g.Printf(" .receiver = _this,\n") |
| g.Printf(" .super_class = class_getSuperclass([%s class]),\n", n.Name) |
| g.Printf("};\n") |
| } |
| retType := "void" |
| if f.Ret != nil { |
| retType = g.objcType(f.Ret) |
| g.Printf("%s res = ", retType) |
| } |
| // There is no direct way to send a message to a class' super |
| // class from outside the class itself. Use objc_msgSendSuper instead |
| // which is what the compiler uses itself. To keep us honest and to exercise |
| // the code paths more use objc_msgSend for regular calls as well. |
| // |
| // A regular call looks like this: |
| // |
| // res = ((<return type> (*)(id, SEL, <argument_types>))objc_msgSend)(_this, @selector(...), <arguments>) |
| // |
| // a call to super looks like this: |
| // |
| // ret = ((<return type> (*)(id, SEL, <argument_types>))objc_msgSendSuper)(<struct objc_super>, <arguments>) |
| if f.Ret != nil { |
| switch f.Ret.Kind { |
| case objc.String, objc.Bool, objc.Data, objc.Int, objc.Uint, objc.Short, objc.Ushort, objc.Char, objc.Float, objc.Double, objc.Class, objc.Protocol: |
| default: |
| // If support for struct results is added, objc_msgSend_stret must be used |
| panic("unsupported type kind - use objc_msgSend_stret?") |
| } |
| } |
| g.Printf("((%s (*)(", retType) |
| if super { |
| g.Printf("struct objc_super *") |
| } else { |
| g.Printf("id") |
| } |
| g.Printf(", SEL") |
| for _, a := range f.Params { |
| g.Printf(", %s", g.objcType(a.Type)) |
| } |
| g.Printf("))") |
| if super { |
| g.Printf("objc_msgSendSuper") |
| } else { |
| g.Printf("objc_msgSend") |
| } |
| g.Printf(")(") |
| if f.Static && !f.Constructor { |
| g.Printf("[%s class]", n.Name) |
| } else { |
| if super { |
| g.Printf("&_super") |
| } else { |
| g.Printf("_this") |
| } |
| } |
| g.Printf(", @selector(%s)", f.Sig) |
| for _, a := range f.Params { |
| arg := "_" + a.Name |
| if a == errParam { |
| arg = "&" + a.Name |
| } |
| g.Printf(", %s", arg) |
| } |
| g.Printf(");\n") |
| if errParam != nil { |
| g.Printf("NSError *_%s = nil;\n", errParam.Name) |
| if f.Ret != nil { |
| g.Printf("if (!res && %s != nil) {\n", errParam.Name) |
| } else { |
| g.Printf("if (%s != nil) {\n", errParam.Name) |
| } |
| g.Printf(" _%[1]s = %[1]s;\n", errParam.Name) |
| g.Printf("}\n") |
| g.genObjCToC("_"+errParam.Name, g.errType(), modeRetained) |
| } |
| ret := f.Ret |
| if ret != nil && ret.Kind == objc.Bool && errParam != nil { |
| ret = nil |
| } |
| if ret != nil { |
| g.genObjCToC("res", ret, modeRetained) |
| } |
| switch { |
| case ret != nil && errParam != nil: |
| stype := strings.Replace(g.cType(ret), " ", "_", -1) |
| g.Printf("ret_%s _sres = {_res, __%s};\n", stype, errParam.Name) |
| g.Printf("return _sres;\n") |
| case ret != nil: |
| g.Printf("return _res;\n") |
| case errParam != nil: |
| g.Printf("return __%s;\n", errParam.Name) |
| } |
| g.Outdent() |
| g.Printf("}\n\n") |
| } |
| |
| func (_ *ObjcWrapper) errType() *objc.Type { |
| return &objc.Type{Kind: objc.Class, Name: "NSError"} |
| } |
| |
| func (g *ObjcWrapper) genM(n *objc.Named) { |
| for _, f := range n.Funcs { |
| if !g.isFuncSupported(f) { |
| continue |
| } |
| g.genCFuncDecl("cproxy", n.GoName, f) |
| g.genCFuncBody(n, f, false) |
| } |
| } |
| |
| func (g *ObjcWrapper) GenH() { |
| g.Printf("//File is generated by gobind. Do not edit.\n\n") |
| g.Printf("#include \"seq.h\"\n\n") |
| for _, m := range g.modules { |
| g.Printf("@import %s;\n", m) |
| } |
| // Include header files for generated types |
| for _, n := range g.pkgNames { |
| hasGen := false |
| for _, t := range g.modMap[n] { |
| if t.Generated { |
| hasGen = true |
| break |
| } |
| } |
| if hasGen { |
| g.Printf("#import %q\n", n+".objc.h") |
| } |
| } |
| for _, tn := range []string{"int", "nstring", "nbyteslice", "long", "unsigned long", "short", "unsigned short", "bool", "char", "unsigned char", "float", "double"} { |
| sn := strings.Replace(tn, " ", "_", -1) |
| g.Printf("typedef struct ret_%s {\n", sn) |
| g.Printf(" %s res;\n", tn) |
| g.Printf(" int err;\n") |
| g.Printf("} ret_%s;\n", sn) |
| } |
| g.Printf("\n") |
| for _, n := range g.types { |
| for _, f := range n.AllMethods { |
| if !g.isFuncSupported(f) { |
| continue |
| } |
| g.Printf("extern ") |
| g.genCFuncDecl("cproxy", n.GoName, f) |
| g.Printf(";\n") |
| if _, exists := g.supers[n.GoName]; exists { |
| g.Printf("extern ") |
| g.genCFuncDecl("csuper", n.GoName, f) |
| g.Printf(";\n") |
| } |
| } |
| } |
| for _, cls := range g.types { |
| g.genH(cls) |
| } |
| } |
| |
| func (g *ObjcWrapper) genH(n *objc.Named) { |
| for _, f := range n.Funcs { |
| if !g.isFuncSupported(f) { |
| continue |
| } |
| g.Printf("extern ") |
| g.genCFuncDecl("cproxy", n.GoName, f) |
| g.Printf(";\n") |
| } |
| } |
| |
| func (g *ObjcWrapper) genCFuncDecl(prefix, name string, f *objc.Func) { |
| returnsErr := len(f.Params) > 0 && g.isErrorType(f.Params[len(f.Params)-1].Type) |
| ret := f.Ret |
| if ret != nil && returnsErr && ret.Kind == objc.Bool { |
| ret = nil |
| } |
| switch { |
| case ret != nil && returnsErr: |
| g.Printf("ret_%s", strings.Replace(g.cType(ret), " ", "_", -1)) |
| case ret != nil: |
| g.Printf(g.cType(ret)) |
| case returnsErr: |
| g.Printf("int") |
| default: |
| g.Printf("void") |
| } |
| g.Printf(" ") |
| g.Printf(prefix) |
| if f.Static { |
| g.Printf("_s") |
| } |
| g.Printf("_%s_%s(", name, f.GoName) |
| if !f.Static { |
| g.Printf("int this") |
| } |
| for i, p := range f.Params { |
| if i == len(f.Params)-1 && returnsErr { |
| break |
| } |
| if !f.Static || i > 0 { |
| g.Printf(", ") |
| } |
| g.Printf("%s %s", g.cType(p.Type), p.Name) |
| } |
| g.Printf(")") |
| } |
| |
| func (g *ObjcWrapper) GenGo() { |
| g.Printf("// File is generated by gobind. Do not edit.\n\n") |
| g.Printf("package main\n\n") |
| g.Printf("// #include \"interfaces.h\"\n") |
| g.Printf("import \"C\"\n\n") |
| g.Printf("import \"ObjC\"\n") |
| g.Printf("import _seq \"golang.org/x/mobile/bind/seq\"\n") |
| |
| for _, n := range g.types { |
| for _, f := range n.Funcs { |
| if g.isFuncSupported(f) { |
| pkgName := n.Module + "/" + n.GoName |
| g.Printf("import %q\n", "ObjC/"+pkgName) |
| break |
| } |
| } |
| } |
| g.Printf("\n") |
| g.Printf("type proxy interface { Bind_proxy_refnum__() int32 }\n\n") |
| g.Printf("// Suppress unused package error\n\n") |
| g.Printf("var _ = _seq.FromRefNum\n") |
| g.Printf("const _ = ObjC.Dummy\n\n") |
| for _, n := range g.types { |
| g.genGo(n) |
| } |
| } |
| |
| func (g *ObjcWrapper) genGo(n *objc.Named) { |
| g.Printf("func init() {\n") |
| g.Indent() |
| for _, f := range n.Funcs { |
| if !g.isFuncSupported(f) { |
| continue |
| } |
| g.Printf("%s.%s = func", n.GoName, f.GoName) |
| g.genFuncDecl(false, f) |
| g.genFuncBody(n, f, "cproxy") |
| } |
| g.Outdent() |
| g.Printf("}\n\n") |
| g.Printf("type proxy_class_%s _seq.Ref\n\n", n.GoName) |
| g.Printf("func (p *proxy_class_%s) Bind_proxy_refnum__() int32 { return (*_seq.Ref)(p).Bind_IncNum() }\n\n", n.GoName) |
| for _, f := range n.AllMethods { |
| if !g.isFuncSupported(f) { |
| continue |
| } |
| g.Printf("func (p *proxy_class_%s) %s", n.GoName, f.GoName) |
| g.genFuncDecl(false, f) |
| g.genFuncBody(n, f, "cproxy") |
| } |
| if _, exists := g.supers[n.GoName]; exists { |
| g.Printf("func (p *proxy_class_%s) Super() ObjC.%s {\n", n.GoName, n.Module+"_"+n.GoName) |
| g.Printf(" return &super_%s{p}\n", n.GoName) |
| g.Printf("}\n\n") |
| g.Printf("type super_%s struct {*proxy_class_%[1]s}\n\n", n.GoName) |
| for _, f := range n.AllMethods { |
| if !g.isFuncSupported(f) { |
| continue |
| } |
| g.Printf("func (p *super_%s) %s", n.GoName, f.GoName) |
| g.genFuncDecl(false, f) |
| g.genFuncBody(n, f, "csuper") |
| } |
| } |
| } |
| |
| func (g *ObjcWrapper) genFuncBody(n *objc.Named, f *objc.Func, prefix string) { |
| g.Printf(" {\n") |
| g.Indent() |
| var errParam *objc.Param |
| for i, a := range f.Params { |
| if i == len(f.Params)-1 && g.isErrorType(a.Type) { |
| errParam = a |
| break |
| } |
| g.genWrite(a) |
| } |
| ret := f.Ret |
| if ret != nil && errParam != nil && ret.Kind == objc.Bool { |
| ret = nil |
| } |
| if ret != nil || errParam != nil { |
| g.Printf("res := ") |
| } |
| g.Printf("C.") |
| g.Printf(prefix) |
| if f.Static { |
| g.Printf("_s") |
| } |
| g.Printf("_%s_%s(", n.GoName, f.GoName) |
| if !f.Static { |
| g.Printf("C.int(p.Bind_proxy_refnum__())") |
| } |
| for i, a := range f.Params { |
| if a == errParam { |
| break |
| } |
| if !f.Static || i > 0 { |
| g.Printf(", ") |
| } |
| g.Printf("_%s", a.Name) |
| } |
| g.Printf(")\n") |
| switch { |
| case ret != nil && errParam != nil: |
| g.genRead("_res", "res.res", ret) |
| g.genRefRead("_"+errParam.Name, "res.err", "error", "proxy_error") |
| g.Printf("return _res, _%s\n", errParam.Name) |
| case ret != nil: |
| g.genRead("_res", "res", ret) |
| g.Printf("return _res\n") |
| case errParam != nil: |
| g.genRefRead("_"+errParam.Name, "res", "error", "proxy_error") |
| g.Printf("return _%s\n", errParam.Name) |
| } |
| g.Outdent() |
| g.Printf("}\n\n") |
| } |
| |
| func (g *ObjcWrapper) genCToObjC(name string, t *objc.Type, mode varMode) { |
| switch t.Kind { |
| case objc.String: |
| g.Printf("NSString *_%s = go_seq_to_objc_string(%s);\n", name, name) |
| case objc.Bool: |
| g.Printf("BOOL _%s = %s ? YES : NO;\n", name, name) |
| case objc.Data: |
| g.Printf("NSData *_%s = go_seq_to_objc_bytearray(%s, %d);\n", name, name, toCFlag(mode == modeRetained)) |
| case objc.Int, objc.Uint, objc.Short, objc.Ushort, objc.Char, objc.Float, objc.Double: |
| g.Printf("%s _%s = (%s)%s;\n", g.objcType(t), name, g.objcType(t), name) |
| case objc.Class, objc.Protocol: |
| g.Printf("GoSeqRef* %s_ref = go_seq_from_refnum(%s);\n", name, name) |
| g.Printf("%s _%s;\n", g.objcType(t), name) |
| g.Printf("if (%s_ref != NULL) {\n", name) |
| g.Printf(" _%s = %s_ref.obj;\n", name, name) |
| g.Printf("}\n") |
| default: |
| panic("invalid kind") |
| } |
| } |
| |
| func (g *ObjcWrapper) genObjCToC(name string, t *objc.Type, mode varMode) { |
| switch t.Kind { |
| case objc.String: |
| g.Printf("nstring _%s = go_seq_from_objc_string(%s);\n", name, name) |
| case objc.Data: |
| g.Printf("nbyteslice _%s = go_seq_from_objc_bytearray(%s, %d);\n", name, name, toCFlag(mode == modeRetained)) |
| case objc.Bool, objc.Int, objc.Uint, objc.Short, objc.Ushort, objc.Char, objc.Float, objc.Double: |
| g.Printf("%s _%s = (%s)%s;\n", g.cType(t), name, g.cType(t), name) |
| case objc.Protocol, objc.Class: |
| g.Printf("int _%s = go_seq_to_refnum(%s);\n", name, name) |
| default: |
| panic("invalid kind") |
| } |
| } |
| |
| func (g *ObjcWrapper) genWrite(a *objc.Param) { |
| switch a.Type.Kind { |
| case objc.String: |
| g.Printf("_%s := encodeString(%s)\n", a.Name, a.Name) |
| case objc.Data: |
| g.Printf("_%s := fromSlice(%s, 0)\n", a.Name, a.Name) |
| case objc.Bool: |
| g.Printf("_%s := %s(0)\n", a.Name, g.cgoType(a.Type)) |
| g.Printf("if %s {\n", a.Name) |
| g.Printf(" _%s = %s(1)\n", a.Name, g.cgoType(a.Type)) |
| g.Printf("}\n") |
| case objc.Int, objc.Uint, objc.Short, objc.Ushort, objc.Char, objc.Float, objc.Double: |
| g.Printf("_%s := %s(%s)\n", a.Name, g.cgoType(a.Type), a.Name) |
| case objc.Protocol, objc.Class: |
| g.Printf("var _%s %s = _seq.NullRefNum\n", a.Name, g.cgoType(a.Type)) |
| g.Printf("if %s != nil {\n", a.Name) |
| g.Printf(" _%s = %s(_seq.ToRefNum(%s))\n", a.Name, g.cgoType(a.Type), a.Name) |
| g.Printf("}\n") |
| default: |
| panic("invalid kind") |
| } |
| } |
| |
| func (g *ObjcWrapper) genRead(to, from string, t *objc.Type) { |
| switch t.Kind { |
| case objc.Int, objc.Uint, objc.Short, objc.Ushort, objc.Char, objc.Float, objc.Double: |
| g.Printf("%s := %s(%s)\n", to, g.goType(t, false), from) |
| case objc.Bool: |
| g.Printf("%s := %s != 0\n", to, from) |
| case objc.String: |
| g.Printf("%s := decodeString(%s)\n", to, from) |
| case objc.Data: |
| g.Printf("%s := toSlice(%s, 1)\n", to, from) |
| case objc.Protocol, objc.Class: |
| var proxyName string |
| if n := g.lookupImported(t); n != nil { |
| proxyName = "proxy_class_" + n.GoName |
| } |
| g.genRefRead(to, from, g.goType(t, false), proxyName) |
| default: |
| panic("invalid kind") |
| } |
| } |
| |
| func (g *ObjcWrapper) genRefRead(to, from string, intfName, proxyName string) { |
| g.Printf("var %s %s\n", to, intfName) |
| g.Printf("%s_ref := _seq.FromRefNum(int32(%s))\n", to, from) |
| g.Printf("if %s_ref != nil {\n", to) |
| g.Printf(" if %s < 0 { // go object\n", from) |
| g.Printf(" %s = %s_ref.Get().(%s)\n", to, to, intfName) |
| if proxyName != "" { |
| g.Printf(" } else { // foreign object\n") |
| g.Printf(" %s = (*%s)(%s_ref)\n", to, proxyName, to) |
| } |
| g.Printf(" }\n") |
| g.Printf("}\n") |
| } |
| |
| // Packages return the list of Go packages to be generated. |
| func (g *ObjcWrapper) Packages() []string { |
| return g.pkgNames |
| } |
| |
| func (g *ObjcWrapper) GenPackage(idx int) { |
| pkg := g.pkgNames[idx] |
| g.Printf("//File is generated by gobind. Do not edit.\n\n") |
| g.Printf("package %s\n\n", path.Base(pkg)) |
| g.Printf("import \"ObjC\"\n\n") |
| g.Printf("const _ = ObjC.Dummy\n\n") |
| for _, n := range g.modMap[pkg] { |
| g.Printf("type %s ObjC.%s\n", n.GoName, n.Module+"_"+n.GoName) |
| } |
| if n, ok := g.typePkgs[pkg]; ok { |
| g.Printf("var (\n") |
| g.Indent() |
| // Functions |
| for _, f := range n.Funcs { |
| if !g.isFuncSupported(f) { |
| continue |
| } |
| g.Printf("%s func", f.GoName) |
| g.genFuncDecl(false, f) |
| g.Printf("\n") |
| } |
| g.Outdent() |
| g.Printf(")\n\n") |
| } |
| } |
| |
| func (g *ObjcWrapper) GenInterfaces() { |
| g.Printf("//File is generated by gobind. Do not edit.\n\n") |
| g.Printf("package ObjC\n\n") |
| g.Printf("// Used to silence this package not used errors\n") |
| g.Printf("const Dummy = 0\n\n") |
| for _, n := range g.types { |
| g.genInterface(n) |
| } |
| } |
| |
| func (g *ObjcWrapper) genInterface(n *objc.Named) { |
| g.Printf("type %s interface {\n", n.Module+"_"+n.GoName) |
| g.Indent() |
| // Methods |
| for _, f := range n.AllMethods { |
| if !g.isFuncSupported(f) { |
| continue |
| } |
| g.Printf(f.GoName) |
| g.genFuncDecl(true, f) |
| g.Printf("\n") |
| } |
| if _, exists := g.supers[n.GoName]; exists { |
| g.Printf("Super() %s\n", n.Module+"_"+n.GoName) |
| } |
| g.Outdent() |
| g.Printf("}\n\n") |
| } |
| |
| func (g *ObjcWrapper) genFuncDecl(local bool, f *objc.Func) { |
| var returnsErr bool |
| g.Printf("(") |
| for i, p := range f.Params { |
| if i == len(f.Params)-1 && g.isErrorType(p.Type) { |
| returnsErr = true |
| break |
| } |
| if i > 0 { |
| g.Printf(", ") |
| } |
| g.Printf("%s %s", p.Name, g.goType(p.Type, local)) |
| } |
| g.Printf(")") |
| if f.Ret != nil || returnsErr { |
| ret := f.Ret |
| if ret.Kind == objc.Bool && returnsErr { |
| // Skip the bool result and use the error results. |
| ret = nil |
| } |
| if ret != nil { |
| g.Printf(" (%s", g.goType(f.Ret, local)) |
| if returnsErr { |
| g.Printf(", error") |
| } |
| g.Printf(")") |
| } else { |
| g.Printf(" error") |
| } |
| } |
| } |
| |
| func (g *ObjcWrapper) isFuncSupported(f *objc.Func) bool { |
| for i, p := range f.Params { |
| if !g.isSupported(p.Type) { |
| if i < len(f.Params)-1 || !g.isErrorType(p.Type) { |
| return false |
| } |
| } |
| } |
| if f.Ret != nil { |
| return g.isSupported(f.Ret) |
| } |
| return true |
| } |
| |
| func (g *ObjcWrapper) isErrorType(t *objc.Type) bool { |
| // Must be a NSError ** type |
| return t.Kind == objc.Class && t.Indirect && t.Name == "NSError" |
| } |
| |
| func (g *ObjcWrapper) isSupported(t *objc.Type) bool { |
| if t.Indirect { |
| return false |
| } |
| switch t.Kind { |
| case objc.Unknown: |
| return false |
| case objc.Protocol: |
| // TODO: support inout parameters. |
| return !strings.HasSuffix(t.Decl, " *") |
| case objc.Class: |
| return t.Name != "SEL" && t.Name != "void" |
| default: |
| return true |
| } |
| } |
| |
| func (g *ObjcWrapper) cgoType(t *objc.Type) string { |
| switch t.Kind { |
| case objc.Uint: |
| return "C.ulong" |
| case objc.Ushort: |
| return "C.ushort" |
| case objc.Uchar: |
| return "C.uchar" |
| default: |
| return "C." + g.cType(t) |
| } |
| } |
| |
| func (g *ObjcWrapper) cType(t *objc.Type) string { |
| switch t.Kind { |
| case objc.Protocol, objc.Class: |
| return "int" |
| case objc.String: |
| return "nstring" |
| case objc.Data: |
| return "nbyteslice" |
| case objc.Int: |
| return "long" |
| case objc.Uint: |
| return "unsigned long" |
| case objc.Short: |
| return "short" |
| case objc.Ushort: |
| return "unsigned short" |
| case objc.Bool: |
| return "char" |
| case objc.Char: |
| return "char" |
| case objc.Uchar: |
| return "unsigned char" |
| case objc.Float: |
| return "float" |
| case objc.Double: |
| return "double" |
| default: |
| panic("invalid kind") |
| } |
| } |
| |
| func (g *ObjcWrapper) objcType(t *objc.Type) string { |
| return t.Decl |
| } |
| |
| func (g *ObjcWrapper) lookupImported(t *objc.Type) *objc.Named { |
| var mangled string |
| switch t.Kind { |
| case objc.Class: |
| mangled = t.Name + "C" |
| case objc.Protocol: |
| mangled = t.Name + "P" |
| default: |
| panic("invalid type kind") |
| } |
| if n, exists := g.imported[mangled]; exists { |
| return n |
| } |
| return g.imported[t.Name] |
| } |
| |
| func (g *ObjcWrapper) goType(t *objc.Type, local bool) string { |
| switch t.Kind { |
| case objc.String: |
| return "string" |
| case objc.Data: |
| return "[]byte" |
| case objc.Int: |
| return "int" |
| case objc.Uint: |
| return "uint" |
| case objc.Short: |
| return "int16" |
| case objc.Ushort: |
| return "uint16" |
| case objc.Bool: |
| return "bool" |
| case objc.Char: |
| return "byte" |
| case objc.Float: |
| return "float32" |
| case objc.Double: |
| return "float64" |
| case objc.Protocol, objc.Class: |
| var n *objc.Named |
| n = g.lookupImported(t) |
| name := n.Module + "_" + n.GoName |
| if !local { |
| name = "ObjC." + name |
| } |
| return name |
| default: |
| panic("invalid kind") |
| } |
| } |
