chore: migrate to gitea

vendor/github.com/bytedance/sonic/internal/decoder/optdec/decoder.go

@@ -0,0 +1,160 @@
+package optdec
+
+import (
+	"reflect"
+	"unsafe"
+
+	"encoding/json"
+	"github.com/bytedance/sonic/internal/rt"
+	"github.com/bytedance/sonic/option"
+	"github.com/bytedance/sonic/internal/decoder/errors"
+	"github.com/bytedance/sonic/internal/decoder/consts"
+)
+
+
+type (
+	MismatchTypeError = errors.MismatchTypeError
+	SyntaxError = errors.SyntaxError
+)
+
+const (
+	_F_allow_control = consts.F_allow_control
+	_F_copy_string = consts.F_copy_string
+	_F_disable_unknown = consts.F_disable_unknown
+	_F_disable_urc = consts.F_disable_urc
+	_F_use_int64 = consts.F_use_int64
+	_F_use_number = consts.F_use_number
+	_F_validate_string = consts.F_validate_string
+)
+
+type Options = consts.Options
+
+const (
+	OptionUseInt64     = consts.OptionUseInt64
+	OptionUseNumber    = consts.OptionUseNumber
+	OptionUseUnicodeErrors = consts.OptionUseUnicodeErrors
+	OptionDisableUnknown = consts.OptionDisableUnknown
+	OptionCopyString = consts.OptionCopyString
+	OptionValidateString = consts.OptionValidateString
+)
+
+
+func Decode(s *string, i *int, f uint64, val interface{}) error {
+	vv := rt.UnpackEface(val)
+	vp := vv.Value
+
+	/* check for nil type */
+	if vv.Type == nil {
+		return &json.InvalidUnmarshalError{}
+	}
+
+	/* must be a non-nil pointer */
+	if vp == nil || vv.Type.Kind() != reflect.Ptr {
+		return &json.InvalidUnmarshalError{Type: vv.Type.Pack()}
+	}
+
+	etp := rt.PtrElem(vv.Type)
+
+	/* check the defined pointer type for issue 379 */
+	if vv.Type.IsNamed() {
+		newp := vp
+		etp = vv.Type
+		vp = unsafe.Pointer(&newp)
+	}
+
+	dec, err := findOrCompile(etp)
+	if err != nil {
+		return err
+	}
+
+	/* parse into document */
+	ctx, err := NewContext(*s, *i, uint64(f), etp)
+	defer ctx.Delete()
+	if ctx.Parser.Utf8Inv {
+		*s = ctx.Parser.Json
+	}
+	if err != nil {
+		goto fix_error;
+	}
+	err = dec.FromDom(vp, ctx.Root(), &ctx)
+
+fix_error:
+	err = fix_error(*s, *i, err)
+
+	// update position at last
+	*i += ctx.Parser.Pos()
+	return err
+}
+
+func fix_error(json string, pos int, err error) error {
+	if e, ok := err.(SyntaxError); ok {
+		return SyntaxError{
+			Pos: int(e.Pos) + pos,
+			Src: json,
+			Msg: e.Msg,
+		}
+	}
+
+	if e, ok := err.(MismatchTypeError); ok {
+		return &MismatchTypeError {
+			Pos: int(e.Pos) + pos,
+			Src: json,
+			Type: e.Type,
+		}
+	}
+
+	return err
+}
+
+// Pretouch compiles vt ahead-of-time to avoid JIT compilation on-the-fly, in
+// order to reduce the first-hit latency.
+//
+// Opts are the compile options, for example, "option.WithCompileRecursiveDepth" is
+// a compile option to set the depth of recursive compile for the nested struct type.
+func Pretouch(vt reflect.Type, opts ...option.CompileOption) error {
+    cfg := option.DefaultCompileOptions()
+    for _, opt := range opts {
+        opt(&cfg)
+    }
+    return pretouchRec(map[reflect.Type]bool{vt:true}, cfg)
+}
+
+func pretouchType(_vt reflect.Type, opts option.CompileOptions) (map[reflect.Type]bool, error) {
+    /* compile function */
+    compiler := newCompiler().apply(opts)
+    decoder := func(vt *rt.GoType, _ ...interface{}) (interface{}, error) {
+        if f, err := compiler.compileType(_vt); err != nil {
+            return nil, err
+        } else {
+            return f, nil
+        }
+    }
+
+    /* find or compile */
+    vt := rt.UnpackType(_vt)
+    if val := programCache.Get(vt); val != nil {
+        return nil, nil
+    } else if _, err := programCache.Compute(vt, decoder); err == nil {
+        return compiler.visited, nil
+    } else {
+        return nil, err
+    }
+}
+
+func pretouchRec(vtm map[reflect.Type]bool, opts option.CompileOptions) error {
+    if opts.RecursiveDepth < 0 || len(vtm) == 0 {
+        return nil
+    }
+    next := make(map[reflect.Type]bool)
+    for vt := range(vtm) {
+        sub, err := pretouchType(vt, opts)
+        if err != nil {
+            return err
+        }
+        for svt := range(sub) {
+            next[svt] = true
+        }
+    }
+    opts.RecursiveDepth -= 1
+    return pretouchRec(next, opts)
+}