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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 decoder
import (
`unsafe`
`github.com/cloudwego/frugal/internal/binary/defs`
`github.com/cloudwego/frugal/internal/rt`
)
const (
NbOffset = int64(unsafe.Offsetof(StateItem{}.Nb))
MpOffset = int64(unsafe.Offsetof(StateItem{}.Mp))
WpOffset = int64(unsafe.Offsetof(StateItem{}.Wp))
FmOffset = int64(unsafe.Offsetof(StateItem{}.Fm))
)
const (
SkOffset = int64(unsafe.Offsetof(RuntimeState{}.Sk))
PrOffset = int64(unsafe.Offsetof(RuntimeState{}.Pr))
IvOffset = int64(unsafe.Offsetof(RuntimeState{}.Iv))
)
const (
StateMax = (defs.StackSize - 1) * StateSize
StateSize = int64(unsafe.Sizeof(StateItem{}))
)
type SkipItem struct {
T defs.Tag
K defs.Tag
V defs.Tag
N uint32
}
type StateItem struct {
Nb uint64
Mp *rt.GoMap
Wp unsafe.Pointer
Fm *FieldBitmap
}
type RuntimeState struct {
St [defs.StackSize]StateItem // Must be the first field.
Sk [defs.StackSize]SkipItem // Skip buffer, used for non-recursive skipping
Pr unsafe.Pointer // Pointer spill space, used for non-fast string or pointer map access.
Iv uint64 // Integer spill space, used for non-fast string map access.
}