How to use IsStruct method of types Package

Best Go-testdeep code snippet using types.IsStruct

check.go

Source:check.go Github

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...22 IsInterface bool `yaml:"IsInterface,omitempty" json:"IsInterface,omitempty"`23 IsChan bool `yaml:"IsChan,omitempty" json:"IsChan,omitempty"`24 IsFunc bool `yaml:"IsFunc,omitempty" json:"IsFunc,omitempty"`25 IsSlice bool `yaml:"IsSlice,omitempty" json:"IsSlice,omitempty"`26 IsStruct bool `yaml:"IsStruct,omitempty" json:"IsStruct,omitempty"`27 IsMap bool `yaml:"IsMap,omitempty" json:"IsMap,omitempty"`28 IsPointer bool `yaml:"IsPointer,omitempty" json:"IsPointer,omitempty"`29 IsReference bool `yaml:"Reference,omitempty" json:"Reference,omitempty"`30 IsNotPointer bool `yaml:"IsNotPointer,omitempty" json:"IsNotPointer,omitempty"`31}32func MustMarshalYaml(whatever interface{}) string {33 buf := bytes.NewBuffer(nil)34 enc := yaml.NewEncoder(buf)35 // enc.SetIndent("", " ")36 err := enc.Encode(whatever)37 if err != nil {38 panic(err)39 }40 return buf.String()41}42func MustMarshalJson(whatever interface{}) string {43 buf := bytes.NewBuffer(nil)44 enc := json.NewEncoder(buf)45 enc.SetIndent("", " ")46 err := enc.Encode(whatever)47 if err != nil {48 panic(err)49 }50 return buf.String()51}52func (c Constraints) String() string {53 return MustMarshalYaml(c)54}55type SameTypes struct{}56func (*SameTypes) MultiCheckAssign(spec *Constraints, lhsTyps, rhsTyps []types.Type) error {57 if len(spec.SameTypes) == 0 {58 return nil59 }60 var indexes []int61 for i := range spec.SameTypes {62 if spec.SameTypes[i][0] != "Params" {63 panic("only Params is supported")64 }65 idx, err := strconv.Atoi(spec.SameTypes[i][1])66 if err != nil {67 return err68 }69 indexes = append(indexes, idx)70 }71 if len(rhsTyps) == 0 {72 return nil73 }74 for i := range indexes {75 idx := indexes[i]76 if !types.Identical(rhsTyps[indexes[0]], rhsTyps[idx]) {77 return fmt.Errorf("expected same types, got %s != %s", rhsTyps[0], rhsTyps[idx])78 }79 }80 return nil81}82// ---83type IsPointer struct{}84func (ch *IsPointer) CheckSwitchTypes(spec *Constraints, lhs types.Type, switchTypes []types.Type, hasDefaultCase bool) error {85 if !spec.IsPointer {86 return nil87 }88 for i := range switchTypes {89 err := ch.CheckAssign(spec, lhs, switchTypes[i])90 if err != nil {91 return err92 }93 }94 return nil95}96func (ch *IsPointer) CheckAssign(spec *Constraints, lhs, rhs types.Type) error {97 if !spec.IsPointer {98 return nil99 }100 if _, ok := rhs.Underlying().(*types.Pointer); ok {101 return nil102 }103 return fmt.Errorf("expected a pointer, got %s", rhs)104}105// ---106type IsInterface struct{}107func (ch *IsInterface) CheckSwitchTypes(spec *Constraints, lhs types.Type, switchTypes []types.Type, hasDefaultCase bool) error {108 if !spec.IsInterface {109 return nil110 }111 for i := range switchTypes {112 err := ch.CheckAssign(spec, lhs, switchTypes[i])113 if err != nil {114 return err115 }116 }117 return nil118}119func (ch *IsInterface) CheckAssign(spec *Constraints, lhs, rhs types.Type) error {120 if !spec.IsInterface {121 return nil122 }123 if _, ok := rhs.Underlying().(*types.Interface); ok {124 return nil125 }126 return fmt.Errorf("expected an interface, got %s", rhs)127}128// --129type IsChan struct{}130func (ch *IsChan) CheckSwitchTypes(spec *Constraints, lhs types.Type, switchTypes []types.Type, hasDefaultCase bool) error {131 if !spec.IsChan {132 return nil133 }134 for i := range switchTypes {135 err := ch.CheckAssign(spec, lhs, switchTypes[i])136 if err != nil {137 return err138 }139 }140 return nil141}142func (ch *IsChan) CheckAssign(spec *Constraints, lhs, rhs types.Type) error {143 if !spec.IsChan {144 return nil145 }146 if _, ok := rhs.Underlying().(*types.Chan); ok {147 return nil148 }149 return fmt.Errorf("expected a channel, got %s", rhs)150}151//152type IsStruct struct{}153func (ch *IsStruct) CheckSwitchTypes(spec *Constraints, lhs types.Type, switchTypes []types.Type, hasDefaultCase bool) error {154 if !spec.IsStruct {155 return nil156 }157 for i := range switchTypes {158 err := ch.CheckAssign(spec, lhs, switchTypes[i])159 if err != nil {160 return err161 }162 }163 return nil164}165func (ch *IsStruct) CheckAssign(spec *Constraints, lhs, rhs types.Type) error {166 if !spec.IsStruct {167 return nil168 }169 if _, ok := rhs.Underlying().(*types.Struct); ok {170 return nil171 }172 return fmt.Errorf("expected a struct, got %s", rhs)173}174//175type IsMap struct{}176func (ch *IsMap) CheckSwitchTypes(spec *Constraints, lhs types.Type, switchTypes []types.Type, hasDefaultCase bool) error {177 if !spec.IsMap {178 return nil179 }180 for i := range switchTypes {...

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idl.go

Source:idl.go Github

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...43 typ reflect.Type44 Name string45 Type string46 IsArray bool47 IsStruct bool48 DefaultValue string49 Format string50 Struct *Struct51 Help string52}53func Define(name string, instance interface{}) (*Interface, error) {54 dict := make(map[string]*Struct)55 err := collate(dict, instance)56 if err != nil {57 return nil, err58 }59 return toInterface(name, dict)60}61func Generate(i interface{}, tmpl string, funcMap map[string]interface{}) ([]byte, error) {62 t, err := template.New("test").Funcs(funcMap).Parse(tmpl)63 if err != nil {64 return nil, err65 }66 buf := new(bytes.Buffer)67 err = t.Execute(buf, i)68 if err != nil {69 return nil, err70 }71 return buf.Bytes(), nil72}73func collate(dict map[string]*Struct, instance interface{}) error {74 s, err := toStruct(instance)75 if err != nil {76 return err77 }78 dict[s.Name] = s79 for _, f := range s.Fields {80 if !f.IsStruct {81 continue82 }83 if _, ok := dict[f.Type]; ok {84 continue85 }86 v := reflect.New(f.typ) // new instance87 p := v.Elem().Interface() // pointer to new instance88 if err := collate(dict, p); err != nil { // recurse89 return err90 }91 }92 return nil93}94func toStruct(s interface{}) (*Struct, error) {95 hasJSON := false96 t := reflect.TypeOf(s)97 if t.Kind() == reflect.Ptr {98 t = t.Elem()99 }100 if t.Kind() != reflect.Struct {101 return nil, fmt.Errorf("%v is not a struct", t.Kind())102 }103 fields := make([]*Field, t.NumField())104 for i := 0; i < len(fields); i++ {105 f := t.Field(i)106 if f.Anonymous {107 continue108 }109 ft := f.Type110 isArray := ft.Kind() == reflect.Slice111 isStruct := ft.Kind() == reflect.Struct112 switch ft.Kind() {113 case114 reflect.Slice,115 reflect.Struct,116 reflect.Bool,117 reflect.Int,118 reflect.Int64,119 reflect.Float32,120 reflect.Float64,121 reflect.String:122 // ok: supported123 default:124 return nil, fmt.Errorf("Unsupported type: %s.%s", t.Name(), f.Name)125 }126 if isArray {127 ft = ft.Elem()128 isStruct = ft.Kind() == reflect.Struct129 }130 help := f.Tag.Get("help")131 if len(help) == 0 {132 help = "No description available"133 }134 if strings.HasPrefix(f.Name, "JSON") {135 hasJSON = true136 }137 fields[i] = &Field{138 ft,139 f.Name,140 ft.Name(),141 isArray,142 isStruct,143 defaultValueOf(ft.Name(), isArray, isStruct),144 formatOf(ft.Name(), isArray, isStruct),145 nil,146 help,147 }148 }149 return &Struct{t.Name(), hasJSON, fields}, nil150}151func defaultValueOf(t string, isArray, isStruct bool) string {152 if isArray || isStruct {153 return "nil"154 }155 switch t {156 case "bool":157 return "false"158 case "string":159 return "\"\""160 default:161 return "0"162 }163}164func formatOf(t string, isArray, isStruct bool) string {165 if isArray || isStruct {166 return "%+v"167 } else {168 return "%v"169 }170}171func toInterface(facadeName string, dict map[string]*Struct) (*Interface, error) {172 facade, ok := dict[facadeName]173 if !ok {174 return nil, fmt.Errorf("Could not find facade definition %s", facadeName)175 }176 methods := make([]*Method, 0)177 structs := make(map[string]*Struct)178 for _, m := range facade.Fields {179 method, ok := dict[m.Type]180 if !ok {181 return nil, fmt.Errorf("Could not find method definition %s", m.Type)182 }183 inputs := make([]*Field, 0)184 outputs := make([]*Field, 0)185 in := true186 for _, f := range method.Fields {187 if f.Name == "_" { // "_" acts as a separator between input and output parameters188 in = false189 continue190 }191 if in {192 inputs = append(inputs, f)193 } else {194 outputs = append(outputs, f)195 }196 if f.IsStruct {197 if _, ok := structs[f.Type]; !ok {198 s, ok := dict[f.Type]199 if !ok {200 return nil, fmt.Errorf("Could not find parameter definition %s", m.Type)201 }202 structs[f.Type] = s203 }204 }205 }206 methods = append(methods, &Method{m.Name, inputs, outputs, m.Help})207 }208 // Store a reference to the actual struct in the field, for downstream pretty-printing.209 for _, m := range methods {210 for _, i := range m.Inputs {211 if i.IsStruct && i.Struct == nil {212 i.Struct = structs[i.Type]213 }214 }215 for _, o := range m.Outputs {216 if o.IsStruct && o.Struct == nil {217 o.Struct = structs[o.Type]218 }219 }220 }221 ks := make([]string, 0)222 for k, _ := range structs {223 ks = append(ks, k)224 }225 sort.Strings(ks)226 types := make(map[string]*Struct, len(ks))227 for _, n := range ks {228 types[structs[n].Name] = structs[n]229 }230 return &Interface{...

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type-visitor.go

Source:type-visitor.go Github

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...5 Types map[string]TypeVisitedItem6}7type TypeVisitedItem struct {8 Name string9 IsStruct bool10 IsPtr bool11 IsArray bool12}13func (sv *TypeVisitor) Visit(name, aType string, isStruct, isPrt, isArray bool) (string, error) {14 item := TypeVisitedItem{Name: aType, IsStruct: isStruct, IsPtr: isPrt, IsArray: isArray}15 if !isStruct {16 sv.NumberOfLeaves++17 }18 n := aType19 if isStruct {20 // In here in the map you could get different keys to the same type if it is used as a pointer or as an array or as a struct,21 // This is wrong for simple types but I keep here for complex types for future use...22 var sb strings.Builder23 if isPrt {24 sb.WriteString("*")25 }26 if isArray {27 sb.WriteString("[]")28 }...

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IsStruct

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1import (2func main() {3 fmt.Println("type:", reflect.TypeOf(x))4 v := reflect.ValueOf(x)5 fmt.Println("value:", v)6 fmt.Println("kind is float64:", v.Kind() == reflect.Float64)7 fmt.Println("type:", v.Type())8 fmt.Println("kind is float64:", v.Kind() == reflect.Float64)9 fmt.Println("value:", v.Float())10 y := v.Interface().(float64)11 fmt.Println(y)12 fmt.Println(v.Interface())13 fmt.Printf("value is %5.2e14", v.Interface())15 fmt.Println(v)16}17import (18func main() {19 fmt.Println("type:", reflect.TypeOf(x))20 v := reflect.ValueOf(x)21 fmt.Println("value:", v)22 fmt.Println("kind is uint8:", v.Kind() == reflect.Uint8)23 fmt.Println("type:", v.Type())24 fmt.Println("kind is uint8:", v.Kind() == reflect.Uint8)25 fmt.Println("value:", v.Uint())26 y := v.Interface().(uint8)27 fmt.Println(y)28 fmt.Println(v.Interface())29 fmt.Printf("value is %c30", v.Interface())31 fmt.Println(v)32}33import (34func main() {35 fmt.Println("type:", reflect.TypeOf(x))36 v := reflect.ValueOf(x)37 fmt.Println("value:", v)38 fmt.Println("kind is

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IsStruct

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1import (2func main() {3 fmt.Println("type:", reflect.TypeOf(x))4 fmt.Println("value:", reflect.ValueOf(x))5 fmt.Println("type:", reflect.TypeOf(x).Kind())6 fmt.Println("type:", reflect.TypeOf(x).Kind() == reflect.Float64)7}

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IsStruct

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1import (2type T struct {3}4func main() {5 v := T{"Naveen", 26}6}7func (t Type) IsString() bool8import (9func main() {10}11func (t Type) IsUint() bool

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IsStruct

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1import (2type MyStruct struct {3}4func main() {5 t := reflect.TypeOf(x)6 fmt.Println(t.IsStruct())7}8Example 2: How to check if a type is a struct using IsStruct() method?9import (10func main() {11 t := reflect.TypeOf(x)12 fmt.Println(t.IsStruct())13}14How to check if a type is a map using IsMap() method?15How to check if a type is a slice using IsSlice() method?16How to check if a type is a pointer using IsPtr() method?17How to check if a type is a func using IsFunc() method?18How to check if a type is an array using IsArray() method?19How to check if a type is a chan using IsChan() method?20How to check if a type is an interface using IsInterface() method?21How to check if a type is a bool using IsBool() method?22How to check if a type is an int using IsInt() method?23How to check if a type is a float using IsFloat() method?24How to check if a type is a complex using IsComplex() method?25How to check if a type is a string using IsString() method?26How to check if a type is an unsafe pointer using IsUnsafePointer() method?27How to check if a type is a uint using IsUint() method?28How to check if a type is a uintptr using IsUintptr() method?29How to check if a type is a byte using IsByte() method?30How to check if a type is a rune using IsRune() method?31How to check if a type is a uint8 using IsUint8() method?32How to check if a type is a uint16 using IsUint16() method?33How to check if a type is a uint32 using IsUint32() method?34How to check if a type is a uint64 using IsUint64() method?35How to check if a type is an int8 using IsInt8() method?36How to check if a type is an int16 using IsInt16() method?

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IsStruct

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1import (2type Person struct {3}4func main() {5 p := Person{}6 t := reflect.TypeOf(p)7 fmt.Println(t.IsStruct())8}92. IsInterface() method10import (11type Person interface {12 Name() string13 Age() int14}15func main() {16 p := Person(nil)17 t := reflect.TypeOf(p)18 fmt.Println(t.IsInterface())19}203. IsPtr() method21import (22func main() {23 t := reflect.TypeOf(p)24 fmt.Println(t.IsPtr())25}264. IsMap() method27import (28func main() {29 t := reflect.TypeOf(p)30 fmt.Println(t.IsMap())31}325. IsSlice() method33import (34func main() {35 t := reflect.TypeOf(p)36 fmt.Println(t.IsSlice())37}386. IsFunc() method39import (40func main() {41 var p func(int) int42 t := reflect.TypeOf(p)43 fmt.Println(t.IsFunc())44}457. IsChan() method

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IsStruct

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1import (2type User struct {3}4func main() {5 u := User{Name: "John"}6 v := reflect.ValueOf(u)7}

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IsStruct

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1import (2func main() {3 t = types.NewPointer(types.Typ[types.Int])4 t = types.NewPointer(types.Typ[types.String])5 t = types.NewPointer(types.Typ[types.Bool])6 t = types.NewPointer(types.Typ[types.Float64])7 t = types.NewPointer(types.Typ[types.Complex128])8 t = types.NewPointer(types.Typ[types.Uintptr])9 t = types.NewPointer(types.Typ[types.UnsafePointer])10 t = types.NewPointer(types.Typ[types.Uint])11 t = types.NewPointer(types.Typ[types.Uint8])12 t = types.NewPointer(types.Typ[types.Uint16])13 t = types.NewPointer(types.Typ[types.Uint32])14 t = types.NewPointer(types.Typ[types.Uint64])15 t = types.NewPointer(types.Typ[types.Int8])16 t = types.NewPointer(types.Typ[types.Int16])17 t = types.NewPointer(types.Typ[types.Int32])18 t = types.NewPointer(types.Typ[types.Int64])19 t = types.NewPointer(types.Typ[types.Float32])20 t = types.NewPointer(types.Typ[types.Complex64])21 t = types.NewPointer(types.Typ[types.Byte])

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IsStruct

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1import (2type MyStruct struct {3}4func main() {5 t = reflect.TypeOf(MyStruct{})6 fmt.Println(t.IsStruct())7}

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IsStruct

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1import (2func main() {3 var y struct {4 }5}6Method: IsStruct()7import (8func main() {9 var y struct {10 }11}

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IsStruct

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1import (2func main() {3 var interface1 interface{}4 var func1 func()5 var struct1 struct {6 }

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