Golang TypeName.Type方法代码示例

func (g *goGen) genInterface(obj *types.TypeName) {
	iface := obj.Type().(*types.Named).Underlying().(*types.Interface)

	g.Printf("const (\n")
	g.Indent()
	g.Printf("proxy%sDescriptor = \"go.%s.%s\"\n", obj.Name(), g.pkg.Name(), obj.Name())
	for i := 0; i < iface.NumMethods(); i++ {
		g.Printf("proxy%s%sCode = 0x%x0a\n", obj.Name(), iface.Method(i).Name(), i+1)
	}
	g.Outdent()
	g.Printf(")\n\n")

	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()
		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), params.At(i).Type())
		}
		g.Printf(") ")
		res := sig.Results()
		if res.Len() > 0 {
			g.Printf("(")
		}
		for i := 0; i < res.Len(); i++ {
			if i > 0 {
				g.Printf(", ")
			}
			g.Printf("res_%d %s", i, res.At(i).Type())
		}
		if res.Len() > 0 {
			g.Printf(")")
		}
		g.Printf(" {\n")
		g.Indent()

		g.Printf("out := new(seq.Buffer)\n")
		for i := 0; i < params.Len(); i++ {
			p := params.At(i)
			g.Printf("out.Write%s\n", seqWrite(p.Type(), paramName(params, i)))
		}
		g.Printf("seq.Transact((*seq.Ref)(p), proxy%s%sCode, out)\n", obj.Name(), m.Name())

		g.Outdent()
		g.Printf("}\n\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
}

// 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) 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) {
		// TODO(hyangah): error type field?
		name, typ := f.Name(), g.objcType(f.Type())
		g.Printf("- (%s)%s;\n", typ, 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", s.asMethod(g))
	}
	g.Printf("@end\n")
}

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 (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)
//.........这里部分代码省略.........

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 {
		// getter
		// TODO(hyangah): support error type fields?
		s := &funcSummary{
			name: f.Name(),
			ret:  g.objcType(f.Type()),
		}
		s.retParams = append(s.retParams, paramInfo{typ: f.Type(), name: "ret_"})

		g.Printf("- %s {\n", s.asMethod(g))
		g.Indent()
		g.genFunc(desc+"_DESCRIPTOR_", desc+"_FIELD_"+f.Name()+"_GET_", s, true)
		g.Outdent()
		g.Printf("}\n\n")

		// setter
		s = &funcSummary{
			name: "set" + f.Name(),
			ret:  "void",
		}
		s.params = append(s.params, paramInfo{typ: f.Type(), name: "v"})

		g.Printf("- %s {\n", s.asMethod(g))
		g.Indent()
		g.genFunc(desc+"_DESCRIPTOR_", desc+"_FIELD_"+f.Name()+"_SET_", s, true)
		g.Outdent()
		g.Printf("}\n\n")
	}

	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 (a *analysis) namedType(obj *types.TypeName, implements map[*types.Named]implementsFacts) {
	qualifier := types.RelativeTo(obj.Pkg())
	T := obj.Type().(*types.Named)
	v := &TypeInfoJSON{
		Name:    obj.Name(),
		Size:    sizes.Sizeof(T),
		Align:   sizes.Alignof(T),
		Methods: []anchorJSON{}, // (JS wants non-nil)
	}

	// addFact adds the fact "is implemented by T" (by) or
	// "implements T" (!by) to group.
	addFact := func(group *implGroupJSON, T types.Type, by bool) {
		Tobj := deref(T).(*types.Named).Obj()
		var byKind string
		if by {
			// Show underlying kind of implementing type,
			// e.g. "slice", "array", "struct".
			s := reflect.TypeOf(T.Underlying()).String()
			byKind = strings.ToLower(strings.TrimPrefix(s, "*types."))
		}
		group.Facts = append(group.Facts, implFactJSON{
			ByKind: byKind,
			Other: anchorJSON{
				Href: a.posURL(Tobj.Pos(), len(Tobj.Name())),
				Text: types.TypeString(T, qualifier),
			},
		})
	}

	// IMPLEMENTS
	if r, ok := implements[T]; ok {
		if isInterface(T) {
			// "T is implemented by <conc>" ...
			// "T is implemented by <iface>"...
			// "T implements        <iface>"...
			group := implGroupJSON{
				Descr: types.TypeString(T, qualifier),
			}
			// Show concrete types first; use two passes.
			for _, sub := range r.to {
				if !isInterface(sub) {
					addFact(&group, sub, true)
				}
			}
			for _, sub := range r.to {
				if isInterface(sub) {
					addFact(&group, sub, true)
				}
			}
			for _, super := range r.from {
				addFact(&group, super, false)
			}
			v.ImplGroups = append(v.ImplGroups, group)
		} else {
			// T is concrete.
			if r.from != nil {
				// "T implements <iface>"...
				group := implGroupJSON{
					Descr: types.TypeString(T, qualifier),
				}
				for _, super := range r.from {
					addFact(&group, super, false)
				}
				v.ImplGroups = append(v.ImplGroups, group)
			}
			if r.fromPtr != nil {
				// "*C implements <iface>"...
				group := implGroupJSON{
					Descr: "*" + types.TypeString(T, qualifier),
				}
				for _, psuper := range r.fromPtr {
					addFact(&group, psuper, false)
				}
				v.ImplGroups = append(v.ImplGroups, group)
			}
		}
	}

	// METHOD SETS
	for _, sel := range typeutil.IntuitiveMethodSet(T, &a.prog.MethodSets) {
		meth := sel.Obj().(*types.Func)
		pos := meth.Pos() // may be 0 for error.Error
		v.Methods = append(v.Methods, anchorJSON{
			Href: a.posURL(pos, len(meth.Name())),
			Text: types.SelectionString(sel, qualifier),
		})
	}

	// Since there can be many specs per decl, we
	// can't attach the link to the keyword 'type'
	// (as we do with 'func'); we use the Ident.
	fi, offset := a.fileAndOffset(obj.Pos())
	fi.addLink(aLink{
		start:   offset,
		end:     offset + len(obj.Name()),
		title:   fmt.Sprintf("type info for %s", obj.Name()),
		onclick: fmt.Sprintf("onClickTypeInfo(%d)", fi.addData(v)),
	})

//.........这里部分代码省略.........

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())

	// Descriptor and code for interface methods.
	g.Printf("const (\n")
	g.Indent()
	g.Printf("proxy%s_Descriptor = %q\n", obj.Name(), ifaceDesc)
	for i := 0; i < iface.NumMethods(); i++ {
		g.Printf("proxy%s_%s_Code = 0x%x0a\n", obj.Name(), iface.Method(i).Name(), i+1)
	}
	g.Outdent()
	g.Printf(")\n\n")

	// Define the entry points.
	for i := 0; i < iface.NumMethods(); i++ {
		m := iface.Method(i)
		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.
	g.Printf("func init() {\n")
	g.Indent()
	for i := 0; i < iface.NumMethods(); i++ {
		g.Printf("seq.Register(proxy%s_Descriptor, proxy%s_%s_Code, proxy%s_%s)\n",
			obj.Name(), obj.Name(), iface.Method(i).Name(), obj.Name(), iface.Method(i).Name())
	}
	g.Outdent()
	g.Printf("}\n\n")

	// Define a proxy interface.
	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 {
		seqTyp := seqType(f.Type())

		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.Printf("v := in.Read%s()\n", seqTyp)
		if seqTyp == "Ref" {
			g.Printf("ref.Get().(*%s.%s).%s = v.Get().(%s)\n", g.pkg.Name(), obj.Name(), f.Name(), g.typeString(f.Type()))
		} else {
			// TODO(crawshaw): other kinds of non-ptr types.
			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())
		if seqTyp == "Ref" {
			g.Printf("out.WriteGoRef(v)\n")
		} else {
			g.Printf("out.Write%s(v)\n", seqTyp)
		}
		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")
}