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Made JSON encoder a public function #443

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38 changes: 25 additions & 13 deletions lib/json/json.go
Original file line number Diff line number Diff line change
Expand Up @@ -81,12 +81,8 @@ var Module = &starlarkstruct.Module{
},
}

func encode(thread *starlark.Thread, b *starlark.Builtin, args starlark.Tuple, kwargs []starlark.Tuple) (starlark.Value, error) {
var x starlark.Value
if err := starlark.UnpackPositionalArgs(b.Name(), args, kwargs, 1, &x); err != nil {
return nil, err
}

// Encodes the given Starlark value as a string in JSON format.
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// Encode returns the JSON encoding of a Starlark value.

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func Encode(x starlark.Value) ([]byte, error) {
buf := new(bytes.Buffer)

var quoteSpace [128]byte
Expand Down Expand Up @@ -221,9 +217,21 @@ func encode(thread *starlark.Thread, b *starlark.Builtin, args starlark.Tuple, k
}

if err := emit(x); err != nil {
return nil, err
}
return buf.Bytes(), nil
}

func encode(thread *starlark.Thread, b *starlark.Builtin, args starlark.Tuple, kwargs []starlark.Tuple) (starlark.Value, error) {
var x starlark.Value
if err := starlark.UnpackPositionalArgs(b.Name(), args, kwargs, 1, &x); err != nil {
return nil, err
}
bytes, err := Encode(x)
if err != nil {
return nil, fmt.Errorf("%s: %v", b.Name(), err)
}
return starlark.String(buf.String()), nil
return starlark.String(string(bytes[:])), nil
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String(bytes)

}

func pointer(i interface{}) unsafe.Pointer {
Expand Down Expand Up @@ -283,12 +291,8 @@ func indent(thread *starlark.Thread, b *starlark.Builtin, args starlark.Tuple, k
return starlark.String(buf.String()), nil
}

func decode(thread *starlark.Thread, b *starlark.Builtin, args starlark.Tuple, kwargs []starlark.Tuple) (_ starlark.Value, err error) {
var s string
if err := starlark.UnpackPositionalArgs(b.Name(), args, kwargs, 1, &s); err != nil {
return nil, err
}

// Decodes the given JSON-encoded string into a Starlark value.
func Decode(s string) (_ starlark.Value, err error) {
// The decoder necessarily makes certain representation choices
// such as list vs tuple, struct vs dict, int vs float.
// In principle, we could parameterize it to allow the caller to
Expand Down Expand Up @@ -510,6 +514,14 @@ func decode(thread *starlark.Thread, b *starlark.Builtin, args starlark.Tuple, k
return x, nil
}

func decode(thread *starlark.Thread, b *starlark.Builtin, args starlark.Tuple, kwargs []starlark.Tuple) (_ starlark.Value, err error) {
var s string
if err := starlark.UnpackPositionalArgs(b.Name(), args, kwargs, 1, &s); err != nil {
return nil, err
}
return Decode(s)
}

func isdigit(b byte) bool {
return b >= '0' && b <= '9'
}