1 files changed, 207 insertions, 0 deletions
diff --git a/vendor/github.com/goccy/go-json/internal/encoder/vm/util.go b/vendor/github.com/goccy/go-json/internal/encoder/vm/util.go
new file mode 100644
index 000000000..86291d7bb
--- /dev/null
+++ b/vendor/github.com/goccy/go-json/internal/encoder/vm/util.go
@@ -0,0 +1,207 @@
+package vm
+
+import (
+	"encoding/json"
+	"fmt"
+	"unsafe"
+
+	"github.com/goccy/go-json/internal/encoder"
+	"github.com/goccy/go-json/internal/runtime"
+)
+
+const uintptrSize = 4 << (^uintptr(0) >> 63)
+
+var (
+	appendInt           = encoder.AppendInt
+	appendUint          = encoder.AppendUint
+	appendFloat32       = encoder.AppendFloat32
+	appendFloat64       = encoder.AppendFloat64
+	appendString        = encoder.AppendString
+	appendByteSlice     = encoder.AppendByteSlice
+	appendNumber        = encoder.AppendNumber
+	errUnsupportedValue = encoder.ErrUnsupportedValue
+	errUnsupportedFloat = encoder.ErrUnsupportedFloat
+	mapiterinit         = encoder.MapIterInit
+	mapiterkey          = encoder.MapIterKey
+	mapitervalue        = encoder.MapIterValue
+	mapiternext         = encoder.MapIterNext
+	maplen              = encoder.MapLen
+)
+
+type emptyInterface struct {
+	typ *runtime.Type
+	ptr unsafe.Pointer
+}
+
+type nonEmptyInterface struct {
+	itab *struct {
+		ityp *runtime.Type // static interface type
+		typ  *runtime.Type // dynamic concrete type
+		// unused fields...
+	}
+	ptr unsafe.Pointer
+}
+
+func errUnimplementedOp(op encoder.OpType) error {
+	return fmt.Errorf("encoder: opcode %s has not been implemented", op)
+}
+
+func load(base uintptr, idx uint32) uintptr {
+	addr := base + uintptr(idx)
+	return **(**uintptr)(unsafe.Pointer(&addr))
+}
+
+func store(base uintptr, idx uint32, p uintptr) {
+	addr := base + uintptr(idx)
+	**(**uintptr)(unsafe.Pointer(&addr)) = p
+}
+
+func loadNPtr(base uintptr, idx uint32, ptrNum uint8) uintptr {
+	addr := base + uintptr(idx)
+	p := **(**uintptr)(unsafe.Pointer(&addr))
+	for i := uint8(0); i < ptrNum; i++ {
+		if p == 0 {
+			return 0
+		}
+		p = ptrToPtr(p)
+	}
+	return p
+}
+
+func ptrToUint64(p uintptr, bitSize uint8) uint64 {
+	switch bitSize {
+	case 8:
+		return (uint64)(**(**uint8)(unsafe.Pointer(&p)))
+	case 16:
+		return (uint64)(**(**uint16)(unsafe.Pointer(&p)))
+	case 32:
+		return (uint64)(**(**uint32)(unsafe.Pointer(&p)))
+	case 64:
+		return **(**uint64)(unsafe.Pointer(&p))
+	}
+	return 0
+}
+func ptrToFloat32(p uintptr) float32            { return **(**float32)(unsafe.Pointer(&p)) }
+func ptrToFloat64(p uintptr) float64            { return **(**float64)(unsafe.Pointer(&p)) }
+func ptrToBool(p uintptr) bool                  { return **(**bool)(unsafe.Pointer(&p)) }
+func ptrToBytes(p uintptr) []byte               { return **(**[]byte)(unsafe.Pointer(&p)) }
+func ptrToNumber(p uintptr) json.Number         { return **(**json.Number)(unsafe.Pointer(&p)) }
+func ptrToString(p uintptr) string              { return **(**string)(unsafe.Pointer(&p)) }
+func ptrToSlice(p uintptr) *runtime.SliceHeader { return *(**runtime.SliceHeader)(unsafe.Pointer(&p)) }
+func ptrToPtr(p uintptr) uintptr {
+	return uintptr(**(**unsafe.Pointer)(unsafe.Pointer(&p)))
+}
+func ptrToNPtr(p uintptr, ptrNum uint8) uintptr {
+	for i := uint8(0); i < ptrNum; i++ {
+		if p == 0 {
+			return 0
+		}
+		p = ptrToPtr(p)
+	}
+	return p
+}
+
+func ptrToUnsafePtr(p uintptr) unsafe.Pointer {
+	return *(*unsafe.Pointer)(unsafe.Pointer(&p))
+}
+func ptrToInterface(code *encoder.Opcode, p uintptr) interface{} {
+	return *(*interface{})(unsafe.Pointer(&emptyInterface{
+		typ: code.Type,
+		ptr: *(*unsafe.Pointer)(unsafe.Pointer(&p)),
+	}))
+}
+
+func appendBool(_ *encoder.RuntimeContext, b []byte, v bool) []byte {
+	if v {
+		return append(b, "true"...)
+	}
+	return append(b, "false"...)
+}
+
+func appendNull(_ *encoder.RuntimeContext, b []byte) []byte {
+	return append(b, "null"...)
+}
+
+func appendComma(_ *encoder.RuntimeContext, b []byte) []byte {
+	return append(b, ',')
+}
+
+func appendNullComma(_ *encoder.RuntimeContext, b []byte) []byte {
+	return append(b, "null,"...)
+}
+
+func appendColon(_ *encoder.RuntimeContext, b []byte) []byte {
+	last := len(b) - 1
+	b[last] = ':'
+	return b
+}
+
+func appendMapKeyValue(_ *encoder.RuntimeContext, _ *encoder.Opcode, b, key, value []byte) []byte {
+	b = append(b, key...)
+	b[len(b)-1] = ':'
+	return append(b, value...)
+}
+
+func appendMapEnd(_ *encoder.RuntimeContext, _ *encoder.Opcode, b []byte) []byte {
+	b[len(b)-1] = '}'
+	b = append(b, ',')
+	return b
+}
+
+func appendMarshalJSON(ctx *encoder.RuntimeContext, code *encoder.Opcode, b []byte, v interface{}) ([]byte, error) {
+	return encoder.AppendMarshalJSON(ctx, code, b, v)
+}
+
+func appendMarshalText(ctx *encoder.RuntimeContext, code *encoder.Opcode, b []byte, v interface{}) ([]byte, error) {
+	return encoder.AppendMarshalText(ctx, code, b, v)
+}
+
+func appendArrayHead(_ *encoder.RuntimeContext, _ *encoder.Opcode, b []byte) []byte {
+	return append(b, '[')
+}
+
+func appendArrayEnd(_ *encoder.RuntimeContext, _ *encoder.Opcode, b []byte) []byte {
+	last := len(b) - 1
+	b[last] = ']'
+	return append(b, ',')
+}
+
+func appendEmptyArray(_ *encoder.RuntimeContext, b []byte) []byte {
+	return append(b, '[', ']', ',')
+}
+
+func appendEmptyObject(_ *encoder.RuntimeContext, b []byte) []byte {
+	return append(b, '{', '}', ',')
+}
+
+func appendObjectEnd(_ *encoder.RuntimeContext, _ *encoder.Opcode, b []byte) []byte {
+	last := len(b) - 1
+	b[last] = '}'
+	return append(b, ',')
+}
+
+func appendStructHead(_ *encoder.RuntimeContext, b []byte) []byte {
+	return append(b, '{')
+}
+
+func appendStructKey(_ *encoder.RuntimeContext, code *encoder.Opcode, b []byte) []byte {
+	return append(b, code.Key...)
+}
+
+func appendStructEnd(_ *encoder.RuntimeContext, _ *encoder.Opcode, b []byte) []byte {
+	return append(b, '}', ',')
+}
+
+func appendStructEndSkipLast(ctx *encoder.RuntimeContext, code *encoder.Opcode, b []byte) []byte {
+	last := len(b) - 1
+	if b[last] == ',' {
+		b[last] = '}'
+		return appendComma(ctx, b)
+	}
+	return appendStructEnd(ctx, code, b)
+}
+
+func restoreIndent(_ *encoder.RuntimeContext, _ *encoder.Opcode, _ uintptr)               {}
+func storeIndent(_ uintptr, _ *encoder.Opcode, _ uintptr)                                 {}
+func appendMapKeyIndent(_ *encoder.RuntimeContext, _ *encoder.Opcode, b []byte) []byte    { return b }
+func appendArrayElemIndent(_ *encoder.RuntimeContext, _ *encoder.Opcode, b []byte) []byte { return b }