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state.go
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state.go
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/*
* Copyright 2022 ByteDance Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package encoder
import (
`math`
`unsafe`
`github.com/cloudwego/frugal/internal/binary/defs`
`github.com/cloudwego/frugal/internal/rt`
)
const (
LnOffset = int64(unsafe.Offsetof(StateItem{}.Ln))
MiOffset = int64(unsafe.Offsetof(StateItem{}.Mi))
WpOffset = int64(unsafe.Offsetof(StateItem{}.Wp))
BmOffset = int64(unsafe.Offsetof(RuntimeState{}.Bm))
)
const (
MiKeyOffset = int64(unsafe.Offsetof(rt.GoMapIterator{}.K))
MiValueOffset = int64(unsafe.Offsetof(rt.GoMapIterator{}.V))
)
const (
StateMax = (defs.StackSize - 1) * StateSize
StateSize = int64(unsafe.Sizeof(StateItem{}))
)
const (
RangeUint8 = math.MaxUint8 + 1
RangeUint16 = math.MaxUint16 + 1
)
type StateItem struct {
Ln uintptr
Wp unsafe.Pointer
Mi rt.GoMapIterator
}
type RuntimeState struct {
St [defs.StackSize]StateItem // Must be the first field.
Bm [1024]uint64 // Bitmap, used for uniqueness check of set<i8> and set<i16>.
Val unsafe.Pointer // Pointer to the object to be encoded
}