73 lines
1.6 KiB
Go
73 lines
1.6 KiB
Go
package builtin
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import (
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"context"
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"fmt"
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"reflect"
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"github.com/dop251/goja"
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)
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func createWrapper[T Args, R any](fn Func[T, R], isAsync bool) func(*goja.Runtime) func(goja.FunctionCall) goja.Value {
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return func(vm *goja.Runtime) func(goja.FunctionCall) goja.Value {
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return func(call goja.FunctionCall) goja.Value {
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var args T
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argsValue := reflect.ValueOf(&args).Elem()
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for i := 0; i < argsValue.NumField() && i < len(call.Arguments); i++ {
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jsArg := call.Arguments[i]
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field := argsValue.Field(i)
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if goja.IsUndefined(jsArg) || goja.IsNull(jsArg) {
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if field.Kind() == reflect.Pointer {
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continue
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}
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}
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converted, err := convertJSValueToGo(vm, jsArg, field.Type())
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if err != nil {
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panic(fmt.Sprintf("argument %d (%s): %v", i, getFieldName(argsValue.Type().Field(i)), err))
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}
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if converted != nil {
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field.Set(reflect.ValueOf(converted))
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}
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}
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if err := args.Validate(); err != nil {
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panic(fmt.Sprintf("argument validation failed: %v", err))
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}
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if isAsync {
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return createAsyncPromise(vm, fn, args)
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}
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ctx := context.Background()
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result, err := fn(ctx, args)
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if err != nil {
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panic(err)
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}
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return convertGoValueToJS(vm, reflect.ValueOf(result))
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}
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}
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}
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func createAsyncPromise[T Args, R any](vm *goja.Runtime, fn Func[T, R], args T) goja.Value {
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promise, resolve, reject := vm.NewPromise()
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go func() {
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ctx := context.Background()
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result, err := fn(ctx, args)
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if err != nil {
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_ = reject(vm.ToValue(err.Error()))
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} else {
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_ = resolve(convertGoValueToJS(vm, reflect.ValueOf(result)))
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}
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}()
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return vm.ToValue(promise)
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}
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