├── .gitignore ├── LICENSE ├── README.md └── js ├── js_notwasm.go ├── js_test.go └── js_wasm.go /.gitignore: -------------------------------------------------------------------------------- 1 | *~ 2 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. 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We also recommend that a 185 | file or class name and description of purpose be included on the 186 | same "printed page" as the copyright notice for easier 187 | identification within third-party archives. 188 | 189 | Copyright {yyyy} {name of copyright owner} 190 | 191 | Licensed under the Apache License, Version 2.0 (the "License"); 192 | you may not use this file except in compliance with the License. 193 | You may obtain a copy of the License at 194 | 195 | http://www.apache.org/licenses/LICENSE-2.0 196 | 197 | Unless required by applicable law or agreed to in writing, software 198 | distributed under the License is distributed on an "AS IS" BASIS, 199 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 200 | See the License for the specific language governing permissions and 201 | limitations under the License. 202 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # MOVED TO https://github.com/gopherjs/gopherwasm 2 | 3 | # This is no longer maintained! 4 | 5 | ---- 6 | 7 | # GopherWasm 8 | 9 | A wrapper for GopherJS (`gopherjs/js`) and Wasm (`syscall/js`) 10 | 11 | Work in progress 12 | -------------------------------------------------------------------------------- /js/js_notwasm.go: -------------------------------------------------------------------------------- 1 | // Copyright 2018 Hajime Hoshi 2 | // 3 | // Licensed under the Apache License, Version 2.0 (the "License"); 4 | // you may not use this file except in compliance with the License. 5 | // You may obtain a copy of the License at 6 | // 7 | // http://www.apache.org/licenses/LICENSE-2.0 8 | // 9 | // Unless required by applicable law or agreed to in writing, software 10 | // distributed under the License is distributed on an "AS IS" BASIS, 11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 | // See the License for the specific language governing permissions and 13 | // limitations under the License. 14 | 15 | // +build !wasm 16 | 17 | package js 18 | 19 | import ( 20 | "fmt" 21 | "unsafe" 22 | 23 | "github.com/gopherjs/gopherjs/js" 24 | ) 25 | 26 | var ( 27 | Undefined = Value{v: js.Undefined} 28 | Null = Value{v: nil} 29 | Global = Value{v: js.Global} 30 | ) 31 | 32 | type Callback struct { 33 | f func([]Value) 34 | flags EventCallbackFlag 35 | } 36 | 37 | type EventCallbackFlag int 38 | 39 | const ( 40 | PreventDefault EventCallbackFlag = 1 << iota 41 | StopPropagation 42 | StopImmediatePropagation 43 | ) 44 | 45 | func NewCallback(f func([]Value)) Callback { 46 | return Callback{f: f} 47 | } 48 | 49 | func NewEventCallback(flags EventCallbackFlag, fn func(event Value)) Callback { 50 | f := func(args []Value) { 51 | e := args[0] 52 | fn(e) 53 | } 54 | return Callback{ 55 | f: f, 56 | flags: flags, 57 | } 58 | } 59 | 60 | func (c Callback) Close() { 61 | } 62 | 63 | type Error struct { 64 | e *js.Error 65 | } 66 | 67 | func (e Error) Error() string { 68 | return e.e.Error() 69 | } 70 | 71 | type Value struct { 72 | v *js.Object 73 | } 74 | 75 | var ( 76 | id *js.Object 77 | ) 78 | 79 | func init() { 80 | if js.Global != nil { 81 | id = js.Global.Call("eval", "(function(x) { return x; })") 82 | } 83 | } 84 | 85 | func ValueOf(x interface{}) Value { 86 | switch x := x.(type) { 87 | case Value: 88 | return x 89 | case Callback: 90 | return Value{ 91 | v: id.Invoke(func(args ...*js.Object) { 92 | if len(args) > 0 { 93 | e := args[0] 94 | if x.flags&PreventDefault != 0 { 95 | e.Call("preventDefault") 96 | } 97 | if x.flags&StopPropagation != 0 { 98 | e.Call("stopPropagation") 99 | } 100 | if x.flags&StopImmediatePropagation != 0 { 101 | e.Call("stopImmediatePropagation") 102 | } 103 | } 104 | 105 | // Call the function asyncly to emulate Wasm's Callback more 106 | // precisely. 107 | go func() { 108 | newArgs := []Value{} 109 | for _, arg := range args { 110 | newArgs = append(newArgs, Value{v: arg}) 111 | } 112 | x.f(newArgs) 113 | }() 114 | }), 115 | } 116 | case nil: 117 | return Null 118 | case bool, int, int8, int16, int32, int64, uint, uint8, uint16, uint32, uint64, float32, float64, unsafe.Pointer, string, []byte: 119 | return Value{v: id.Invoke(x)} 120 | case []int8, []int16, []int32, []int64, []uint16, []uint32, []uint64, []float32, []float64: 121 | return Value{v: id.Invoke(x)} 122 | default: 123 | panic(fmt.Sprintf("invalid arg: %T", x)) 124 | } 125 | } 126 | 127 | func (v Value) Bool() bool { 128 | return v.v.Bool() 129 | } 130 | 131 | func convertArgs(args []interface{}) []interface{} { 132 | newArgs := []interface{}{} 133 | for _, arg := range args { 134 | v := ValueOf(arg) 135 | newArgs = append(newArgs, v.v) 136 | } 137 | return newArgs 138 | } 139 | 140 | func (v Value) Call(m string, args ...interface{}) Value { 141 | return Value{v: v.v.Call(m, convertArgs(args)...)} 142 | } 143 | 144 | func (v Value) Float() float64 { 145 | return v.v.Float() 146 | } 147 | 148 | func (v Value) Get(p string) Value { 149 | return Value{v: v.v.Get(p)} 150 | } 151 | 152 | func (v Value) Index(i int) Value { 153 | return Value{v: v.v.Index(i)} 154 | } 155 | 156 | func (v Value) Int() int { 157 | return v.v.Int() 158 | } 159 | 160 | func (v Value) Invoke(args ...interface{}) Value { 161 | return Value{v: v.v.Invoke(convertArgs(args)...)} 162 | } 163 | 164 | func (v Value) Length() int { 165 | return v.v.Length() 166 | } 167 | 168 | func (v Value) New(args ...interface{}) Value { 169 | return Value{v: v.v.New(convertArgs(args)...)} 170 | } 171 | 172 | func (v Value) Set(p string, x interface{}) { 173 | v.v.Set(p, x) 174 | } 175 | 176 | func (v Value) SetIndex(i int, x interface{}) { 177 | v.v.SetIndex(i, x) 178 | } 179 | 180 | func (v Value) String() string { 181 | return v.v.String() 182 | } 183 | 184 | func GetInternalObject(v Value) interface{} { 185 | return v.v 186 | } 187 | -------------------------------------------------------------------------------- /js/js_test.go: -------------------------------------------------------------------------------- 1 | // Copyright 2018 Hajime Hoshi 2 | // 3 | // Licensed under the Apache License, Version 2.0 (the "License"); 4 | // you may not use this file except in compliance with the License. 5 | // You may obtain a copy of the License at 6 | // 7 | // http://www.apache.org/licenses/LICENSE-2.0 8 | // 9 | // Unless required by applicable law or agreed to in writing, software 10 | // distributed under the License is distributed on an "AS IS" BASIS, 11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 | // See the License for the specific language governing permissions and 13 | // limitations under the License. 14 | 15 | package js_test 16 | 17 | import ( 18 | "math" 19 | "testing" 20 | 21 | "github.com/hajimehoshi/gopherwasm/js" 22 | ) 23 | 24 | func TestNull(t *testing.T) { 25 | want := "null" 26 | if got := js.Null.String(); got != want { 27 | t.Errorf("got %#v, want %#v", got, want) 28 | } 29 | } 30 | 31 | func TestCallback(t *testing.T) { 32 | ch := make(chan int) 33 | c := js.NewCallback(func(args []js.Value) { 34 | ch <- args[0].Int() + args[1].Int() 35 | }) 36 | defer c.Close() 37 | 38 | js.ValueOf(c).Invoke(1, 2) 39 | got := <-ch 40 | want := 3 41 | if got != want { 42 | t.Errorf("got %#v, want %#v", got, want) 43 | } 44 | } 45 | 46 | func TestCallbackObject(t *testing.T) { 47 | ch := make(chan string) 48 | c := js.NewCallback(func(args []js.Value) { 49 | ch <- args[0].Get("foo").String() 50 | }) 51 | defer c.Close() 52 | 53 | js.ValueOf(c).Invoke(js.Global.Call("eval", `({"foo": "bar"})`)) 54 | got := <-ch 55 | want := "bar" 56 | if got != want { 57 | t.Errorf("got %#v, want %#v", got, want) 58 | } 59 | } 60 | 61 | func TestString(t *testing.T) { 62 | obj := js.Global.Call("eval", "'Hello'") 63 | got := obj.String() 64 | if want := "Hello"; got != want { 65 | t.Errorf("got %#v, want %#v", got, want) 66 | } 67 | } 68 | 69 | func TestInt64(t *testing.T) { 70 | var i int64 = math.MaxInt64 71 | got := js.ValueOf(i).String() 72 | // js.Value keeps the value only in 53-bit precision. 73 | if want := "9223372036854776000"; got != want { 74 | t.Errorf("got %#v, want %#v", got, want) 75 | } 76 | } 77 | -------------------------------------------------------------------------------- /js/js_wasm.go: -------------------------------------------------------------------------------- 1 | // Copyright 2018 Hajime Hoshi 2 | // 3 | // Licensed under the Apache License, Version 2.0 (the "License"); 4 | // you may not use this file except in compliance with the License. 5 | // You may obtain a copy of the License at 6 | // 7 | // http://www.apache.org/licenses/LICENSE-2.0 8 | // 9 | // Unless required by applicable law or agreed to in writing, software 10 | // distributed under the License is distributed on an "AS IS" BASIS, 11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 | // See the License for the specific language governing permissions and 13 | // limitations under the License. 14 | 15 | // +build wasm 16 | 17 | package js 18 | 19 | import ( 20 | "reflect" 21 | "syscall/js" 22 | "unsafe" 23 | ) 24 | 25 | var ( 26 | Undefined = js.Undefined 27 | Null = js.Null 28 | Global = js.Global 29 | ) 30 | 31 | type Callback = js.Callback 32 | 33 | type EventCallbackFlag = js.EventCallbackFlag 34 | 35 | const ( 36 | PreventDefault = js.PreventDefault 37 | StopPropagation = js.StopPropagation 38 | StopImmediatePropagation = js.StopImmediatePropagation 39 | ) 40 | 41 | func NewCallback(f func([]Value)) Callback { 42 | return js.NewCallback(f) 43 | } 44 | 45 | func NewEventCallback(flags EventCallbackFlag, fn func(event Value)) Callback { 46 | return js.NewEventCallback(flags, fn) 47 | } 48 | 49 | type Error = js.Error 50 | 51 | type Value = js.Value 52 | 53 | var ( 54 | int8Array = js.Global.Get("Int8Array") 55 | int16Array = js.Global.Get("Int16Array") 56 | int32Array = js.Global.Get("Int32Array") 57 | int64Array = js.Global.Get("Int64Array") 58 | uint16Array = js.Global.Get("Uint16Array") 59 | uint32Array = js.Global.Get("Uint32Array") 60 | uint64Array = js.Global.Get("Uint64Array") 61 | float32Array = js.Global.Get("Float32Array") 62 | float64Array = js.Global.Get("Float64Array") 63 | ) 64 | 65 | func ValueOf(x interface{}) Value { 66 | var xh *reflect.SliceHeader 67 | var class js.Value 68 | size := 0 69 | switch x := x.(type) { 70 | case []int8: 71 | size = 1 72 | xh = (*reflect.SliceHeader)(unsafe.Pointer(&x)) 73 | class = int8Array 74 | case []int16: 75 | size = 2 76 | xh = (*reflect.SliceHeader)(unsafe.Pointer(&x)) 77 | class = int16Array 78 | case []int32: 79 | size = 4 80 | xh = (*reflect.SliceHeader)(unsafe.Pointer(&x)) 81 | class = int32Array 82 | case []int64: 83 | size = 8 84 | xh = (*reflect.SliceHeader)(unsafe.Pointer(&x)) 85 | class = int64Array 86 | case []uint16: 87 | size = 2 88 | xh = (*reflect.SliceHeader)(unsafe.Pointer(&x)) 89 | class = uint16Array 90 | case []uint32: 91 | size = 4 92 | xh = (*reflect.SliceHeader)(unsafe.Pointer(&x)) 93 | class = uint32Array 94 | case []uint64: 95 | size = 8 96 | xh = (*reflect.SliceHeader)(unsafe.Pointer(&x)) 97 | class = uint64Array 98 | case []float32: 99 | size = 4 100 | xh = (*reflect.SliceHeader)(unsafe.Pointer(&x)) 101 | class = float32Array 102 | case []float64: 103 | size = 8 104 | xh = (*reflect.SliceHeader)(unsafe.Pointer(&x)) 105 | class = float64Array 106 | default: 107 | return js.ValueOf(x) 108 | } 109 | 110 | var b []byte 111 | bh := (*reflect.SliceHeader)(unsafe.Pointer(&b)) 112 | bh.Data = xh.Data 113 | bh.Len = xh.Len * size 114 | bh.Cap = xh.Cap * size 115 | 116 | u8 := js.ValueOf(b) 117 | return class.New(u8.Get("buffer"), u8.Get("byteOffset"), xh.Len) 118 | } 119 | 120 | func GetInternalObject(v Value) interface{} { 121 | return v 122 | } 123 | --------------------------------------------------------------------------------