mirror of
https://github.com/superseriousbusiness/gotosocial.git
synced 2024-12-29 10:36:31 +00:00
317 lines
8 KiB
Go
317 lines
8 KiB
Go
package schema
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import (
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"database/sql/driver"
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"fmt"
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"net"
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"reflect"
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"strconv"
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"strings"
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"time"
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"github.com/puzpuzpuz/xsync/v3"
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"github.com/uptrace/bun/dialect"
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"github.com/uptrace/bun/dialect/sqltype"
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"github.com/uptrace/bun/extra/bunjson"
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"github.com/uptrace/bun/internal"
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"github.com/vmihailenco/msgpack/v5"
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)
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type (
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AppenderFunc func(fmter Formatter, b []byte, v reflect.Value) []byte
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CustomAppender func(typ reflect.Type) AppenderFunc
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)
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var appenders = []AppenderFunc{
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reflect.Bool: AppendBoolValue,
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reflect.Int: AppendIntValue,
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reflect.Int8: AppendIntValue,
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reflect.Int16: AppendIntValue,
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reflect.Int32: AppendIntValue,
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reflect.Int64: AppendIntValue,
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reflect.Uint: AppendUintValue,
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reflect.Uint8: AppendUintValue,
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reflect.Uint16: AppendUintValue,
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reflect.Uint32: appendUint32Value,
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reflect.Uint64: appendUint64Value,
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reflect.Uintptr: nil,
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reflect.Float32: AppendFloat32Value,
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reflect.Float64: AppendFloat64Value,
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reflect.Complex64: nil,
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reflect.Complex128: nil,
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reflect.Array: AppendJSONValue,
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reflect.Chan: nil,
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reflect.Func: nil,
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reflect.Interface: nil,
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reflect.Map: AppendJSONValue,
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reflect.Ptr: nil,
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reflect.Slice: AppendJSONValue,
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reflect.String: AppendStringValue,
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reflect.Struct: AppendJSONValue,
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reflect.UnsafePointer: nil,
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}
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var appenderCache = xsync.NewMapOf[reflect.Type, AppenderFunc]()
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func FieldAppender(dialect Dialect, field *Field) AppenderFunc {
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if field.Tag.HasOption("msgpack") {
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return appendMsgpack
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}
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fieldType := field.StructField.Type
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switch strings.ToUpper(field.UserSQLType) {
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case sqltype.JSON, sqltype.JSONB:
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if fieldType.Implements(driverValuerType) {
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return appendDriverValue
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}
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if fieldType.Kind() != reflect.Ptr {
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if reflect.PointerTo(fieldType).Implements(driverValuerType) {
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return addrAppender(appendDriverValue)
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}
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}
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return AppendJSONValue
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}
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return Appender(dialect, fieldType)
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}
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func Appender(dialect Dialect, typ reflect.Type) AppenderFunc {
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if v, ok := appenderCache.Load(typ); ok {
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return v
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}
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fn := appender(dialect, typ)
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if v, ok := appenderCache.LoadOrStore(typ, fn); ok {
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return v
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}
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return fn
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}
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func appender(dialect Dialect, typ reflect.Type) AppenderFunc {
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switch typ {
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case bytesType:
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return appendBytesValue
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case timeType:
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return appendTimeValue
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case timePtrType:
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return PtrAppender(appendTimeValue)
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case ipNetType:
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return appendIPNetValue
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case ipType, netipPrefixType, netipAddrType:
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return appendStringer
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case jsonRawMessageType:
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return appendJSONRawMessageValue
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}
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kind := typ.Kind()
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if typ.Implements(queryAppenderType) {
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if kind == reflect.Ptr {
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return nilAwareAppender(appendQueryAppenderValue)
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}
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return appendQueryAppenderValue
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}
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if typ.Implements(driverValuerType) {
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if kind == reflect.Ptr {
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return nilAwareAppender(appendDriverValue)
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}
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return appendDriverValue
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}
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if kind != reflect.Ptr {
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ptr := reflect.PointerTo(typ)
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if ptr.Implements(queryAppenderType) {
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return addrAppender(appendQueryAppenderValue)
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}
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if ptr.Implements(driverValuerType) {
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return addrAppender(appendDriverValue)
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}
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}
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switch kind {
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case reflect.Interface:
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return ifaceAppenderFunc
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case reflect.Ptr:
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if typ.Implements(jsonMarshalerType) {
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return nilAwareAppender(AppendJSONValue)
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}
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if fn := Appender(dialect, typ.Elem()); fn != nil {
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return PtrAppender(fn)
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}
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case reflect.Slice:
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if typ.Elem().Kind() == reflect.Uint8 {
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return appendBytesValue
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}
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case reflect.Array:
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if typ.Elem().Kind() == reflect.Uint8 {
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return appendArrayBytesValue
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}
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}
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return appenders[typ.Kind()]
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}
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func ifaceAppenderFunc(fmter Formatter, b []byte, v reflect.Value) []byte {
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if v.IsNil() {
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return dialect.AppendNull(b)
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}
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elem := v.Elem()
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appender := Appender(fmter.Dialect(), elem.Type())
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return appender(fmter, b, elem)
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}
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func nilAwareAppender(fn AppenderFunc) AppenderFunc {
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return func(fmter Formatter, b []byte, v reflect.Value) []byte {
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if v.IsNil() {
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return dialect.AppendNull(b)
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}
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return fn(fmter, b, v)
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}
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}
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func PtrAppender(fn AppenderFunc) AppenderFunc {
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return func(fmter Formatter, b []byte, v reflect.Value) []byte {
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if v.IsNil() {
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return dialect.AppendNull(b)
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}
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return fn(fmter, b, v.Elem())
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}
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}
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func AppendBoolValue(fmter Formatter, b []byte, v reflect.Value) []byte {
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return fmter.Dialect().AppendBool(b, v.Bool())
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}
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func AppendIntValue(fmter Formatter, b []byte, v reflect.Value) []byte {
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return strconv.AppendInt(b, v.Int(), 10)
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}
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func AppendUintValue(fmter Formatter, b []byte, v reflect.Value) []byte {
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return strconv.AppendUint(b, v.Uint(), 10)
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}
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func appendUint32Value(fmter Formatter, b []byte, v reflect.Value) []byte {
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return fmter.Dialect().AppendUint32(b, uint32(v.Uint()))
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}
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func appendUint64Value(fmter Formatter, b []byte, v reflect.Value) []byte {
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return fmter.Dialect().AppendUint64(b, v.Uint())
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}
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func AppendFloat32Value(fmter Formatter, b []byte, v reflect.Value) []byte {
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return dialect.AppendFloat32(b, float32(v.Float()))
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}
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func AppendFloat64Value(fmter Formatter, b []byte, v reflect.Value) []byte {
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return dialect.AppendFloat64(b, float64(v.Float()))
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}
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func appendBytesValue(fmter Formatter, b []byte, v reflect.Value) []byte {
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return fmter.Dialect().AppendBytes(b, v.Bytes())
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}
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func appendArrayBytesValue(fmter Formatter, b []byte, v reflect.Value) []byte {
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if v.CanAddr() {
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return fmter.Dialect().AppendBytes(b, v.Slice(0, v.Len()).Bytes())
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}
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tmp := make([]byte, v.Len())
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reflect.Copy(reflect.ValueOf(tmp), v)
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b = fmter.Dialect().AppendBytes(b, tmp)
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return b
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}
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func AppendStringValue(fmter Formatter, b []byte, v reflect.Value) []byte {
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return fmter.Dialect().AppendString(b, v.String())
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}
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func AppendJSONValue(fmter Formatter, b []byte, v reflect.Value) []byte {
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bb, err := bunjson.Marshal(v.Interface())
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if err != nil {
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return dialect.AppendError(b, err)
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}
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if len(bb) > 0 && bb[len(bb)-1] == '\n' {
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bb = bb[:len(bb)-1]
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}
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return fmter.Dialect().AppendJSON(b, bb)
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}
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func appendTimeValue(fmter Formatter, b []byte, v reflect.Value) []byte {
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tm := v.Interface().(time.Time)
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return fmter.Dialect().AppendTime(b, tm)
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}
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func appendIPNetValue(fmter Formatter, b []byte, v reflect.Value) []byte {
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ipnet := v.Interface().(net.IPNet)
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return fmter.Dialect().AppendString(b, ipnet.String())
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}
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func appendStringer(fmter Formatter, b []byte, v reflect.Value) []byte {
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return fmter.Dialect().AppendString(b, v.Interface().(fmt.Stringer).String())
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}
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func appendJSONRawMessageValue(fmter Formatter, b []byte, v reflect.Value) []byte {
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bytes := v.Bytes()
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if bytes == nil {
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return dialect.AppendNull(b)
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}
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return fmter.Dialect().AppendString(b, internal.String(bytes))
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}
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func appendQueryAppenderValue(fmter Formatter, b []byte, v reflect.Value) []byte {
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return AppendQueryAppender(fmter, b, v.Interface().(QueryAppender))
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}
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func appendDriverValue(fmter Formatter, b []byte, v reflect.Value) []byte {
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value, err := v.Interface().(driver.Valuer).Value()
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if err != nil {
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return dialect.AppendError(b, err)
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}
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if _, ok := value.(driver.Valuer); ok {
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return dialect.AppendError(b, fmt.Errorf("driver.Valuer returns unsupported type %T", value))
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}
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return Append(fmter, b, value)
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}
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func addrAppender(fn AppenderFunc) AppenderFunc {
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return func(fmter Formatter, b []byte, v reflect.Value) []byte {
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if !v.CanAddr() {
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err := fmt.Errorf("bun: Append(nonaddressable %T)", v.Interface())
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return dialect.AppendError(b, err)
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}
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return fn(fmter, b, v.Addr())
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}
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}
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func appendMsgpack(fmter Formatter, b []byte, v reflect.Value) []byte {
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hexEnc := internal.NewHexEncoder(b)
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enc := msgpack.GetEncoder()
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defer msgpack.PutEncoder(enc)
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enc.Reset(hexEnc)
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if err := enc.EncodeValue(v); err != nil {
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return dialect.AppendError(b, err)
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}
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if err := hexEnc.Close(); err != nil {
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return dialect.AppendError(b, err)
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}
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return hexEnc.Bytes()
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}
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func AppendQueryAppender(fmter Formatter, b []byte, app QueryAppender) []byte {
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bb, err := app.AppendQuery(fmter, b)
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if err != nil {
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return dialect.AppendError(b, err)
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}
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return bb
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}
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