/
decoder.go
188 lines (176 loc) · 5.11 KB
/
decoder.go
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package json
import (
"encoding/json"
"errors"
"io"
"github.com/robloxapi/rbxdump"
)
func (root *jRoot) UnmarshalJSON(b []byte) (err error) {
var v struct{ Version int }
if err := json.Unmarshal(b, &v); err != nil {
return err
}
switch v.Version {
case 1:
r := struct {
Classes []jClass
Enums []jEnum
}{}
if err := json.Unmarshal(b, &r); err != nil {
return err
}
root.Classes = make(map[string]*rbxdump.Class, len(r.Classes))
for _, jclass := range r.Classes {
tags, pd := unmarshalTags(jclass.Tags)
class := rbxdump.Class{
Name: jclass.Name,
Superclass: jclass.Superclass,
MemoryCategory: jclass.MemoryCategory,
Members: make(map[string]rbxdump.Member, len(jclass.Members)),
PreferredDescriptor: pd,
Tags: tags,
}
for _, jmember := range jclass.Members {
class.Members[jmember.MemberName()] = jmember.Member
}
root.Classes[class.Name] = &class
}
root.Enums = make(map[string]*rbxdump.Enum, len(r.Enums))
for _, jenum := range r.Enums {
tags, pd := unmarshalTags(jenum.Tags)
enum := rbxdump.Enum{
Name: jenum.Name,
Items: make(map[string]*rbxdump.EnumItem, len(jenum.Items)),
PreferredDescriptor: pd,
Tags: tags,
}
for i, jitem := range jenum.Items {
tags, pd := unmarshalTags(jitem.Tags)
enum.Items[jitem.Name] = &rbxdump.EnumItem{
Name: jitem.Name,
Value: jitem.Value,
Index: i,
PreferredDescriptor: pd,
Tags: tags,
LegacyNames: jitem.LegacyNames,
}
}
root.Enums[enum.Name] = &enum
}
default:
return errVersion(v.Version)
}
return nil
}
func (jmember *jMember) UnmarshalJSON(b []byte) (err error) {
var t struct{ MemberType string }
if err := json.Unmarshal(b, &t); err != nil {
return err
}
switch t.MemberType {
case "Property":
var member jProperty
if err := json.Unmarshal(b, &member); err != nil {
return err
}
tags, pd := unmarshalTags(member.Tags)
jmember.Member = &rbxdump.Property{
Name: member.Name,
ValueType: rbxdump.Type(member.ValueType),
Default: member.Default,
Category: member.Category,
ReadSecurity: member.Security.Read,
WriteSecurity: member.Security.Write,
CanLoad: member.Serialization.CanLoad,
CanSave: member.Serialization.CanSave,
ThreadSafety: member.ThreadSafety,
PreferredDescriptor: pd,
Tags: tags,
}
case "Function":
var member jFunction
if err := json.Unmarshal(b, &member); err != nil {
return err
}
params := make([]rbxdump.Parameter, len(member.Parameters))
for i, param := range member.Parameters {
params[i] = rbxdump.Parameter(param)
}
tags, pd := unmarshalTags(member.Tags)
jmember.Member = &rbxdump.Function{
Name: member.Name,
Parameters: params,
ReturnType: member.ReturnType,
Security: member.Security,
ThreadSafety: member.ThreadSafety,
PreferredDescriptor: pd,
Tags: tags,
}
case "Event":
var member jEvent
if err := json.Unmarshal(b, &member); err != nil {
return err
}
params := make([]rbxdump.Parameter, len(member.Parameters))
for i, param := range member.Parameters {
params[i] = rbxdump.Parameter{Type: rbxdump.Type(param.Type), Name: param.Name}
}
tags, pd := unmarshalTags(member.Tags)
jmember.Member = &rbxdump.Event{
Name: member.Name,
Parameters: params,
Security: member.Security,
ThreadSafety: member.ThreadSafety,
PreferredDescriptor: pd,
Tags: tags,
}
case "Callback":
var member jCallback
if err := json.Unmarshal(b, &member); err != nil {
return err
}
params := make([]rbxdump.Parameter, len(member.Parameters))
for i, param := range member.Parameters {
params[i] = rbxdump.Parameter{Type: rbxdump.Type(param.Type), Name: param.Name}
}
tags, pd := unmarshalTags(member.Tags)
jmember.Member = &rbxdump.Callback{
Name: member.Name,
Parameters: params,
ReturnType: member.ReturnType,
Security: member.Security,
ThreadSafety: member.ThreadSafety,
PreferredDescriptor: pd,
Tags: tags,
}
default:
return errors.New("invalid member type \"" + t.MemberType + "\"")
}
return nil
}
// UnmarshalJSON implements the json.Unmarshaller interface.
func (param *jParameter) UnmarshalJSON(b []byte) (err error) {
var p struct {
Default *string `json:",omitempty"`
Name string
Type jType
}
if err := json.Unmarshal(b, &p); err != nil {
return err
}
param.Type = rbxdump.Type(p.Type)
param.Name = p.Name
if p.Default != nil {
param.Optional = true
param.Default = *p.Default
}
return nil
}
// Decode parses an API dump from r in JSON format.
func Decode(r io.Reader) (root *rbxdump.Root, err error) {
jroot := &jRoot{}
if err = json.NewDecoder(r).Decode(jroot); err != nil {
return nil, err
}
return &jroot.Root, nil
}