Initial working version.

This commit is contained in:
2026-09-29 19:10:32 +05:30
parent 4bd3cd23e6
commit 5cd2b38c9c
4 changed files with 1207 additions and 0 deletions
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module gitea.cozeon.cloud/anand.ekka-ext/jaeson
go 1.22.3
require github.com/antlr/antlr4/runtime/Go/antlr v1.4.10
require gitea.cozeon.cloud/anand.ekka-ext/parser v0.0.0-20260929115114-8ff7130c8636
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package jaeson
import (
"errors"
"sort"
"strconv"
"strings"
)
var (
JSON_VAL_TYPE_STRING = "str"
JSON_VAL_TYPE_INT = "int"
JSON_VAL_TYPE_FLOAT = "float"
JSON_VAL_TYPE_BOOL = "jsbln"
JSON_VAL_TYPE_OBJECT = "jsobj"
JSON_VAL_TYPE_ARRAY = "jsarr"
)
type JSONObject struct {
ms map[string]string
mo map[string]*JSONObject
marr map[string]*JSONArray
mn map[string]int
mbln map[string]bool
mflt64 map[string]float64
//contains all valid keys
mAllkeys map[string]string
ctms int
ctmo int
ctmarr int
ctmn int
ctmbln int
ctmflt64 int
hasVal bool
//isSorted bool
}
func NewJSONObject() *JSONObject {
jsObj := new(JSONObject)
jsObj.Init()
return jsObj
}
func NewJSONArray() *JSONArray {
jsArr := new(JSONArray)
jsArr.Init()
return jsArr
}
func (v *JSONObject) Init() {
v.ctms = 0
v.ctmo = 0
v.ctmarr = 0
v.ctmn = 0
v.ctmbln = 0
v.ctmflt64 = 0
v.ms = make(map[string]string, 0)
v.mo = make(map[string]*JSONObject, 0)
v.marr = make(map[string]*JSONArray, 0)
v.mn = make(map[string]int, 0)
v.mbln = make(map[string]bool, 0)
v.mflt64 = make(map[string]float64, 0)
v.hasVal = false
//v.isSorted = false
v.mAllkeys = make(map[string]string, 0)
}
func (v *JSONObject) KeySetSize() int {
return v.ctms + v.ctmo + v.ctmarr + v.ctmn + v.ctmbln
}
func (v *JSONObject) Map() map[string]string {
return v.mAllkeys
}
//---------- PUT ----------//
func (v *JSONObject) PutString(key string, value string) {
if v.mAllkeys[key] == JSON_VAL_TYPE_OBJECT {
v.RemoveJSONObject(key)
} else if v.mAllkeys[key] == JSON_VAL_TYPE_ARRAY {
v.RemoveJSONArray(key)
} else if v.mAllkeys[key] == JSON_VAL_TYPE_INT {
v.RemoveInt(key)
} else if v.mAllkeys[key] == JSON_VAL_TYPE_BOOL {
v.RemoveBool(key)
}
v.ms[key] = value
v.ctms += 1
v.hasVal = true
v.mAllkeys[key] = JSON_VAL_TYPE_STRING
}
func (v *JSONObject) PutJSONObject(key string, value *JSONObject) {
if v.mAllkeys[key] == JSON_VAL_TYPE_ARRAY {
v.RemoveJSONArray(key)
} else if v.mAllkeys[key] == JSON_VAL_TYPE_INT {
v.RemoveInt(key)
} else if v.mAllkeys[key] == JSON_VAL_TYPE_STRING {
v.RemoveString(key)
} else if v.mAllkeys[key] == JSON_VAL_TYPE_BOOL {
v.RemoveBool(key)
}
v.mo[key] = value
v.ctmo += 1
v.hasVal = true
v.mAllkeys[key] = JSON_VAL_TYPE_OBJECT
}
func (v *JSONObject) PutJSONArray(key string, value *JSONArray) {
if v.mAllkeys[key] == JSON_VAL_TYPE_OBJECT {
v.RemoveJSONObject(key)
} else if v.mAllkeys[key] == JSON_VAL_TYPE_INT {
v.RemoveInt(key)
} else if v.mAllkeys[key] == JSON_VAL_TYPE_STRING {
v.RemoveString(key)
} else if v.mAllkeys[key] == JSON_VAL_TYPE_BOOL {
v.RemoveBool(key)
}
v.marr[key] = value
v.ctmarr += 1
v.hasVal = true
v.mAllkeys[key] = JSON_VAL_TYPE_ARRAY
}
func (v *JSONObject) PutInt(key string, value int) {
if v.mAllkeys[key] == JSON_VAL_TYPE_OBJECT {
v.RemoveJSONObject(key)
} else if v.mAllkeys[key] == JSON_VAL_TYPE_ARRAY {
v.RemoveJSONArray(key)
} else if v.mAllkeys[key] == JSON_VAL_TYPE_STRING {
v.RemoveString(key)
} else if v.mAllkeys[key] == JSON_VAL_TYPE_BOOL {
v.RemoveBool(key)
}
v.mn[key] = value
v.ctmn += 1
v.hasVal = true
v.mAllkeys[key] = JSON_VAL_TYPE_INT
}
func (v *JSONObject) PutNumber(key string, value int) {
v.PutInt(key, value)
}
func (v *JSONObject) PutBool(key string, value bool) {
if v.mAllkeys[key] == JSON_VAL_TYPE_OBJECT {
v.RemoveJSONObject(key)
} else if v.mAllkeys[key] == JSON_VAL_TYPE_ARRAY {
v.RemoveJSONArray(key)
} else if v.mAllkeys[key] == JSON_VAL_TYPE_STRING {
v.RemoveString(key)
} else if v.mAllkeys[key] == JSON_VAL_TYPE_INT {
v.RemoveInt(key)
}
v.mbln[key] = value
v.ctmbln += 1
v.hasVal = true
v.mAllkeys[key] = JSON_VAL_TYPE_BOOL
}
func (v *JSONObject) PutFloat(key string, value float64) {
if v.mAllkeys[key] == JSON_VAL_TYPE_OBJECT {
v.RemoveJSONObject(key)
} else if v.mAllkeys[key] == JSON_VAL_TYPE_ARRAY {
v.RemoveJSONArray(key)
} else if v.mAllkeys[key] == JSON_VAL_TYPE_STRING {
v.RemoveString(key)
} else if v.mAllkeys[key] == JSON_VAL_TYPE_INT {
v.RemoveInt(key)
} else if v.mAllkeys[key] == JSON_VAL_TYPE_BOOL {
v.RemoveBool(key)
}
v.mflt64[key] = value
v.ctmflt64 += 1
v.hasVal = true
v.mAllkeys[key] = JSON_VAL_TYPE_FLOAT
}
//---------- ACCUMULATE ----------//
func (v *JSONObject) AccumulateJSONObject(key string, value *JSONObject) {
jsArr, err := v.GetJSONArray(key)
if err != nil {
v.RemoveString(key)
v.RemoveJSONObject(key)
jsArr := NewJSONArray()
jsArr.AddJSONObject(value)
v.PutJSONArray(key, jsArr)
} else {
jsArr.AddJSONObject(value)
}
}
//---------- GET ----------//
func (v *JSONObject) GethasVal() bool {
return v.hasVal
}
func (v *JSONObject) GetString(key string) (string, error) {
if v.ctms > 0 {
val, isContainsKey := v.ms[key]
if isContainsKey {
return val, nil
}else{
_, err := v.GetValType(key)
if err != nil {
return "", err
} else {
return "", errors.New("value not a string")
}
}
} else {
_, err := v.GetValType(key)
if err != nil {
return "", err
} else {
return "", errors.New("value not an string")
}
}
}
func (v *JSONObject) GetJSONObject(key string) (*JSONObject, error) {
if v.ctmo > 0 {
val, isContainsKey := v.mo[key]
if isContainsKey {
return val, nil
}else{
_, err := v.GetValType(key)
if err != nil {
return nil, err
} else {
return nil, errors.New("value not a JSONObject")
}
}
} else {
_, err := v.GetValType(key)
if err != nil {
return nil, err
} else {
return nil, errors.New("value not an JSONObject")
}
}
}
func (v *JSONObject) GetJSONArray(key string) (*JSONArray, error) {
if v.ctmarr > 0 {
val, isContainsKey := v.marr[key]
if isContainsKey {
return val, nil
}else{
_, err := v.GetValType(key)
if err != nil {
return nil, err
} else {
return nil, errors.New("value not a JSONArray")
}
}
} else {
_, err := v.GetValType(key)
if err != nil {
return nil, err
} else {
return nil, errors.New("value not an JSONArray")
}
}
}
func (v *JSONObject) GetInt(key string) (int, error) {
if v.ctmn > 0 {
val, isContainsKey := v.mn[key]
if isContainsKey {
return val, nil
}else{
_, err := v.GetValType(key)
if err != nil {
return -1, err
} else {
return -1, errors.New("value not an int")
}
}
} else {
_, err := v.GetValType(key)
if err != nil {
return -1, err
} else {
return -1, errors.New("value not an int")
}
}
}
func (v *JSONObject) GetNumber(key string) (int, error) {
return v.GetInt(key)
}
func (v *JSONObject) GetBool(key string) (bool, error) {
if v.ctmbln > 0 {
val, isContainsKey := v.mbln[key]
if isContainsKey {
return val, nil
}else{
_, err := v.GetValType(key)
if err != nil {
return false, err
} else {
return false, errors.New("value not a bool")
}
}
} else {
_, err := v.GetValType(key)
if err != nil {
return false, err
} else {
return false, errors.New("value not a bool")
}
}
}
func (v *JSONObject) GetFloat(key string) (float64, error) {
if v.ctmflt64 > 0 {
val, isContainsKey := v.mflt64[key]
if isContainsKey {
return val, nil
}else{
_, err := v.GetValType(key)
if err != nil {
return -1, err
} else {
return -1, errors.New("value not a float")
}
}
} else {
_, err := v.GetValType(key)
if err != nil {
return -1, err
} else {
return -1, errors.New("value not a float")
}
}
}
func (v *JSONObject) GetValType(key string) (string, error) {
if len(v.mAllkeys) > 0 {
valType := v.mAllkeys[key]
if len(valType) == 0 {
return "", errors.New("key not found")
} else {
return valType, nil
}
} else {
return "", errors.New("key not found")
}
}
//---------- func REMOVE ----------//
func (v *JSONObject) RemoveString(key string) (error) {
if v.ctms > 0 {
_, isContainsKey := v.ms[key]
if isContainsKey {
delete(v.ms, key)
delete(v.mAllkeys, key)
v.ctms = len(v.ms)
}else{
return v.genericRemove(key, "string")
}
} else {
return v.genericRemove(key, "string")
}
return nil
}
func (v *JSONObject) RemoveJSONObject(key string) (error) {
if v.ctmo > 0 {
_, isContainsKey := v.mo[key]
if isContainsKey {
delete(v.mo, key)
delete(v.mAllkeys, key)
v.ctmo = len(v.mo)
}else{
return v.genericRemove(key, "JSONObject")
}
} else {
return v.genericRemove(key, "JSONObject")
}
return nil
}
func (v *JSONObject) RemoveJSONArray(key string) (error) {
if v.ctmarr > 0 {
_, isContainsKey := v.marr[key]
if isContainsKey {
delete(v.marr, key)
delete(v.mAllkeys, key)
v.ctmarr = len(v.marr)
}else{
return v.genericRemove(key, "JSONArray")
}
} else {
return v.genericRemove(key, "JSONArray")
}
return nil
}
func (v *JSONObject) RemoveInt(key string) (error){
if v.ctmn > 0 {
_, isContainsKey := v.mn[key]
if isContainsKey {
delete(v.mn, key)
delete(v.mAllkeys, key)
v.ctmn = len(v.mn)
}else{
return v.genericRemove(key, "int")
}
} else {
return v.genericRemove(key, "int")
}
return nil
}
func (v *JSONObject) RemoveBool(key string) (error){
if v.ctmbln > 0 {
_, isContainsKey := v.mbln[key]
if isContainsKey {
delete(v.mbln, key)
delete(v.mAllkeys, key)
v.ctmbln = len(v.mbln)
}else{
return v.genericRemove(key, "bool")
}
} else {
return v.genericRemove(key, "bool")
}
return nil
}
func (v *JSONObject) RemoveFloat(key string) (error){
if v.ctmflt64 > 0 {
_, isContainsKey := v.mflt64[key]
if isContainsKey {
delete(v.mflt64, key)
delete(v.mAllkeys, key)
v.ctmflt64 = len(v.mflt64)
}else{
return v.genericRemove(key, "float")
}
} else {
return v.genericRemove(key, "float")
}
return nil
}
func (v *JSONObject) RemoveAny(key string) (error){
_, isContainsKey := v.mAllkeys[key]
if isContainsKey {
valType, err := v.GetValType(key)
if err != nil {
return err
} else {
// delete appropriate collection
switch valType {
case JSON_VAL_TYPE_STRING:
delete(v.ms, key)
delete(v.mAllkeys, key)
v.ctms = len(v.ms)
case JSON_VAL_TYPE_BOOL:
delete(v.mbln, key)
delete(v.mAllkeys, key)
v.ctmbln = len(v.mbln)
case JSON_VAL_TYPE_INT:
delete(v.mn, key)
delete(v.mAllkeys, key)
v.ctmn = len(v.mn)
case JSON_VAL_TYPE_FLOAT:
delete(v.mflt64, key)
delete(v.mAllkeys, key)
v.ctmflt64 = len(v.mflt64)
case JSON_VAL_TYPE_OBJECT:
delete(v.mo, key)
delete(v.mAllkeys, key)
v.ctmo = len(v.mo)
case JSON_VAL_TYPE_ARRAY:
delete(v.marr, key)
delete(v.mAllkeys, key)
v.ctmarr = len(v.marr)
default:
return errors.New("Invalid date type: " + valType)
}
}
}else{
return errors.New("key not found")
}
return nil
}
func (v *JSONObject) genericRemove(key string, msgSuffx string) (error){
_, err := v.GetValType(key)
if err != nil {
return err
} else {
return errors.New("value not a "+msgSuffx)
}
}
//---------- PRINT STRING----------//
func (v *JSONObject) String() string {
var out string = "{"
if v.ctms > 0 {
for keyms, _ := range v.ms {
out += "\"" + keyms + "\":\"" + v.ms[keyms] + "\","
}
}
if v.ctmn > 0 {
for keymn, _ := range v.mn {
out += "\"" + keymn + "\":" + strconv.Itoa(v.mn[keymn]) + ","
}
}
if v.ctmo > 0 {
for keymo, _ := range v.mo {
jsObj := v.mo[keymo]
out += "\"" + keymo + "\":" + jsObj.String() + ","
}
}
if v.ctmarr > 0 {
for keymarr, _ := range v.marr {
jsArr := v.marr[keymarr]
out += "\"" + keymarr + "\":" + jsArr.String() + ","
}
}
if v.ctmbln > 0 {
for keymbln, _ := range v.mbln {
if v.mbln[keymbln] {
out += "\"" + keymbln + "\":true,"
}else{
out += "\"" + keymbln + "\":false,"
}
}
}
if v.ctmflt64 > 0 {
for keymflt64, _ := range v.mflt64 {
out += "\"" + keymflt64 + "\":" + strconv.FormatFloat(v.mflt64[keymflt64], 'f', -1, 64 ) + ","
}
}
if strings.HasSuffix(out, ",") {
out = out[0 : len(out)-1]
}
out += "}"
return out
}
func (v *JSONObject) StringJCS() string {
var out string = "{"
var keys []string
keys = make([]string, 0, len(v.mAllkeys))
for k := range v.mAllkeys {
keys = append(keys, k)
}
sort.Strings(keys)
iLenKeys := len(keys)
for idx := 0; idx < iLenKeys; idx++ {
key := keys[idx]
tmpVal := v.mAllkeys[key]
switch tmpVal {
case JSON_VAL_TYPE_OBJECT:
jsObj := v.mo[key]
out += "\"" + key + "\":\"" + jsObj.StringJCS() + "\","
case JSON_VAL_TYPE_ARRAY:
jsArr := v.marr[key]
out += "\"" + key + "\":" + jsArr.String() + ","
case JSON_VAL_TYPE_BOOL:
out += "\"" + key + "\":" + strconv.FormatBool(v.mbln[key]) + ","
case JSON_VAL_TYPE_INT:
out += "\"" + key + "\":" + strconv.Itoa(v.mn[key]) + ","
case JSON_VAL_TYPE_FLOAT:
out += "\"" + key + "\":" + strconv.FormatFloat(v.mflt64[key], 'f', -1, 64 ) + ","
default:
out += "\"" + key + "\":\"" + v.ms[key] + "\","
}
}
if strings.HasSuffix(out, ",") {
out = out[0 : len(out)-1]
}
out += "}"
return out
}
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package jaeson
import (
"errors"
"strconv"
"strings"
)
type JSONArray struct {
sarr []string
oarr []*JSONObject
aarr []*JSONArray
narr []int
blnarr []bool
flt64arr []float64
ctsarr int
ctoarr int
ctaarr int
ctnarr int
ctblnarr int
ctflt64arr int
hasVal bool
}
func (v *JSONArray) Init() {
v.ctsarr = 0
v.ctoarr = 0
v.ctaarr = 0
v.ctnarr = 0
v.ctblnarr = 0
v.ctflt64arr = 0
v.sarr = make([]string, 0)
v.oarr = make([]*JSONObject, 0)
v.aarr = make([]*JSONArray, 0)
v.narr = make([]int, 0)
v.blnarr = make([]bool, 0)
v.flt64arr = make([]float64, 0)
v.hasVal = false
}
func (v *JSONArray) Size() int {
return v.ctsarr + v.ctoarr + v.ctaarr + v.ctnarr
}
//---------- ADD ----------//
func (v *JSONArray) AddString(value string) error {
v.sarr = append(v.sarr, value)
v.ctsarr += 1
v.hasVal = true
return nil
}
func (v *JSONArray) AddJSONObject(value *JSONObject) error {
v.oarr = append(v.oarr, value)
v.ctoarr += 1
v.hasVal = true
return nil
}
func (v *JSONArray) AddJSONArray(value *JSONArray) error {
v.aarr = append(v.aarr, value)
v.ctaarr += 1
v.hasVal = true
return nil
}
func (v *JSONArray) AddInt(value int) error {
v.narr = append(v.narr, value)
v.ctnarr += 1
v.hasVal = true
return nil
}
func (v *JSONArray) AddBool(value bool) error {
v.blnarr = append(v.blnarr, value)
v.ctblnarr += 1
v.hasVal = true
return nil
}
func (v *JSONArray) AddFloat(value float64) error {
v.flt64arr = append(v.flt64arr, value)
v.ctflt64arr += 1
v.hasVal = true
return nil
}
//---------- PUT ----------//
func (v *JSONArray) PutJSONObject(value *JSONObject) error {
return v.AddJSONObject(value)
}
func (v *JSONArray) PutString(value string) error {
return v.AddString(value)
}
func (v *JSONArray) PutJSONArray(value *JSONArray) error {
return v.AddJSONArray(value)
}
func (v *JSONArray) PutInt(value int) error {
return v.AddInt(value)
}
func (v *JSONArray) PutBool(value bool) error {
return v.AddBool(value)
}
func (v *JSONArray) PutFloat(value float64) error {
return v.AddFloat(value)
}
//---------- GET ----------//
func (v *JSONArray) GethasVal() bool {
return v.hasVal
}
func (v *JSONArray) GetString(index int) string {
return v.sarr[index]
}
func (v *JSONArray) GetStringArray() []string {
return v.sarr
}
func (v *JSONArray) FromStringArray(pArr []string) {
v.sarr = pArr
}
func (v *JSONArray) GetJSONObject(index int) (*JSONObject, error) {
if index > -1 {
if v.ctoarr > 0 {
return v.oarr[index], nil
} else {
return nil, errors.New("index out of range: " + strconv.Itoa(index))
}
} else {
return nil, errors.New("index out of range: " + strconv.Itoa(index))
}
}
func (v *JSONArray) GetJSONArray(index int) (*JSONArray, error) {
if index > -1 {
if v.ctaarr > 0 {
return v.aarr[index], nil
} else {
return nil, errors.New("index out of range: " + strconv.Itoa(index))
}
} else {
return nil, errors.New("index out of range: " + strconv.Itoa(index))
}
}
func (v *JSONArray) GetInt(index int) int {
return v.narr[index]
}
func (v *JSONArray) GetNumber(index int) int {
return v.narr[index]
}
func (v *JSONArray) GetBool(index int) bool {
return v.blnarr[index]
}
func (v *JSONArray) GetFloat(index int) float64 {
return v.flt64arr[index]
}
func (v *JSONArray) RemoveLastElem() {
if v.ctaarr > 0 {
v.aarr = v.aarr[:len(v.aarr)-1]
v.ctaarr -= 1
}else if v.ctoarr > 0 {
v.oarr = v.oarr[:len(v.oarr)-1]
v.ctoarr -= 1
}else if v.ctsarr > 0 {
v.sarr = v.sarr[:len(v.sarr)-1]
v.ctsarr -= 1
}else if v.ctnarr > 0 {
v.narr = v.narr[:len(v.narr)-1]
v.ctnarr -= 1
}
}
//---------- PRINT STRING----------//
func (v *JSONArray) String() string {
var out string = "["
if v.ctsarr > 0 {
for idx := range v.sarr {
out += "\"" + v.sarr[idx] + "\","
}
}
if v.ctoarr > 0 {
for idx, _ := range v.oarr {
jsObj := v.oarr[idx]
out += jsObj.String() + ","
}
}
if v.ctaarr > 0 {
for idx, _ := range v.aarr {
jsArr := v.aarr[idx]
out += jsArr.String() + ","
}
}
if v.ctnarr > 0 {
for idx, _ := range v.narr {
out += strconv.Itoa(v.narr[idx]) + ","
}
}
if v.ctblnarr > 0 {
for idx, _ := range v.blnarr {
out += strconv.FormatBool(v.blnarr[idx]) + ","
}
}
if v.ctflt64arr > 0 {
for idx, _ := range v.flt64arr {
out += strconv.FormatFloat(v.flt64arr[idx], 'f', -1, 64 ) + ","
}
}
if strings.HasSuffix(out, ",") {
out = out[0 : len(out)-1]
}
out += "]"
return out
}
//---------- PRINT STRING----------//
// JSON Canonicalisation Scheme (JCS)
func (v *JSONArray) StringJCS() string {
var out string = "["
// TO BE IMPLEMENTED
out += "]"
return out
}
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package jaeson
import (
"strconv"
"gitea.cozeon.cloud/anand.ekka-ext/parser"
"github.com/antlr/antlr4/runtime/Go/antlr"
)
type stackElem struct {
jsObj *JSONObject
jsArr *JSONArray
hasJsObj bool
hasJsArr bool
}
func (v *stackElem) Init() {
v.hasJsObj = false
v.hasJsArr = false
}
func (v *stackElem) GetJsObj() *JSONObject {
return v.jsObj
}
func (v *stackElem) GetJsArr() *JSONArray {
return v.jsArr
}
func (v *stackElem) GetHasJsObj() bool {
return v.hasJsObj
}
func (v *stackElem) GetHasJsArr() bool {
return v.hasJsArr
}
func (v *stackElem) PutJSONObject(jsnObj *JSONObject) {
v.hasJsObj = true
v.hasJsArr = false
v.jsObj = jsnObj
}
func (v *stackElem) PutJSONArray(jsnArr *JSONArray) {
v.hasJsObj = false
v.hasJsArr = true
v.jsArr = jsnArr
}
type jsonListener struct {
*parser.BaseJSONListener
topJsObj *JSONObject
currJsObj *JSONObject
currJsArr *JSONArray
currKey string
childJsObj *JSONObject
childJsArr *JSONArray
foundKeyOfPair bool
jsonStartFound bool
topObjCreated bool
arrStart bool
parentObjStack []*stackElem
stckElemPointer int
topJsArr *JSONArray
topArrCreated bool
}
func (s *jsonListener) GetLastElem() *stackElem {
return s.parentObjStack[s.stckElemPointer-1]
}
func (s *jsonListener) DeleteLastElem() {
s.parentObjStack[s.stckElemPointer-1] = nil
s.stckElemPointer -= 1
}
func (s *jsonListener) AddJSONObjToStack(jsObj *JSONObject) {
tmpStckElem := new(stackElem)
tmpStckElem.Init()
s.stckElemPointer += 1
if s.stckElemPointer > len(s.parentObjStack) {
s.parentObjStack = append(s.parentObjStack, tmpStckElem)
} else {
s.parentObjStack[s.stckElemPointer-1] = tmpStckElem
}
tmpStckElem.PutJSONObject(jsObj)
}
func (s *jsonListener) AddJSONArrToStack(jsArr *JSONArray) {
tmpStckElem := new(stackElem)
tmpStckElem.Init()
s.stckElemPointer += 1
if s.stckElemPointer > len(s.parentObjStack) {
s.parentObjStack = append(s.parentObjStack, tmpStckElem)
} else {
s.parentObjStack[s.stckElemPointer-1] = tmpStckElem
}
tmpStckElem.PutJSONArray(jsArr)
}
//--------------- Json Enter-Exit ---------------//
func (s *jsonListener) EnterJson(ctx *parser.JsonContext) {
s.jsonStartFound = true
s.topObjCreated = false
s.stckElemPointer = 0
}
func (s *jsonListener) ExitJson(ctx *parser.JsonContext) {
// nothing needs to be implemented
}
//--------------- Obj Enter-Exit ---------------//
func (s *jsonListener) EnterObj(ctx *parser.ObjContext) {
if !s.topObjCreated && !s.topArrCreated {
s.topJsObj = new(JSONObject)
s.topJsObj.Init()
s.currJsObj = s.topJsObj
s.foundKeyOfPair = false
s.topObjCreated = true
s.arrStart = false
//initialize stack
s.parentObjStack = make([]*stackElem, 0)
//Add topJsObj to stack
s.AddJSONObjToStack(s.topJsObj)
} else {
s.childJsObj = new(JSONObject)
s.childJsObj.Init()
if s.arrStart {
s.currJsArr.PutJSONObject(s.childJsObj)
s.AddJSONArrToStack(s.currJsArr)
s.currJsObj = s.childJsObj
s.arrStart = false
} else {
s.currJsObj.PutJSONObject(s.currKey, s.childJsObj)
// might need stack up or append curr object in a LIFO stack,
// before takig on the new child object
s.AddJSONObjToStack(s.currJsObj)
s.currJsObj = s.childJsObj
}
}
}
func (s *jsonListener) ExitObj(ctx *parser.ObjContext) {
tmpPrevStckElem := s.GetLastElem()
if tmpPrevStckElem != nil {
if tmpPrevStckElem.GetHasJsObj() {
s.currJsObj = tmpPrevStckElem.GetJsObj()
s.arrStart = false
} else {
s.currJsArr = tmpPrevStckElem.GetJsArr()
s.arrStart = true
}
s.DeleteLastElem()
} //else {
// nothing needs to be implemented
//}
}
//--------------- Arr Enter-Exit ---------------//
// EnterArr is called when production arr is entered.
func (s *jsonListener) EnterArr(ctx *parser.ArrContext) {
if !s.topObjCreated && !s.topArrCreated {
s.topJsArr = new(JSONArray)
s.topJsArr.Init()
s.currJsArr = s.topJsArr
s.topArrCreated = true
s.arrStart = true
//initialize stack
s.parentObjStack = make([]*stackElem, 0)
//Add topJsArr to stack
s.AddJSONArrToStack(s.topJsArr)
} else {
if s.arrStart {
s.childJsArr = new(JSONArray)
s.childJsArr.Init()
//add currJsArr to stack
s.AddJSONArrToStack(s.currJsArr)
s.currJsArr.PutJSONArray(s.childJsArr)
s.currJsArr = s.childJsArr
} else {
s.currJsArr = new(JSONArray)
s.currJsArr.Init()
s.currJsObj.PutJSONArray(s.currKey, s.currJsArr)
s.AddJSONObjToStack(s.currJsObj)
}
}
s.arrStart = true
}
// ExitArr is called when production arr is exited.
func (s *jsonListener) ExitArr(ctx *parser.ArrContext) {
s.arrStart = false
tmpPrevStckElem := s.GetLastElem()
if tmpPrevStckElem.GetHasJsObj() {
s.currJsObj = tmpPrevStckElem.GetJsObj()
s.arrStart = false
} else {
s.currJsArr = tmpPrevStckElem.GetJsArr()
s.arrStart = true
}
s.DeleteLastElem()
}
//--------------- Pair Enter-Exit ---------------//
func (s *jsonListener) EnterPair(ctx *parser.PairContext) {
s.foundKeyOfPair = true
s.currKey = ctx.STRING().GetSymbol().GetText()
s.currKey = s.currKey[1 : len(s.currKey)-1]
}
func (s *jsonListener) ExitPair(ctx *parser.PairContext) {
s.foundKeyOfPair = false
}
//--------------- Value Enter-Exit ---------------//
func (s *jsonListener) EnterValue(ctx *parser.ValueContext) {
if ctx.STRING() != nil {
val0 := ctx.STRING().GetSymbol().GetText()
val1 := val0[1 : len(val0)-1]
if s.arrStart {
s.currJsArr.PutString(val1)
} else {
s.currJsObj.PutString(s.currKey, val1)
}
}else if ctx.NUMBER() != nil {
val0 := ctx.NUMBER().GetSymbol().GetText()
vali, erri := strconv.ParseInt(val0, 10, 64)
if erri != nil {
valf, errf := strconv.ParseFloat(val0, 64)
if errf == nil {
s.currJsObj.PutFloat(s.currKey, valf)
} else {
// neither int nor float. then what is it ?
}
}else{
s.currJsObj.PutInt(s.currKey, int(vali))
}
//s.currJsObj.PutInt(s.currKey, val1)
}else if ctx.Obj() != nil {
// nothing needs to be implemented
}else if ctx.BOOLEAN() != nil {
val0 := ctx.BOOLEAN().GetSymbol().GetText()
val1, _ := strconv.ParseBool(val0)
s.currJsObj.PutBool(s.currKey, val1)
}
s.foundKeyOfPair = false
}
func (s *jsonListener) ExitValue(ctx *parser.ValueContext) {
// nothing needs to be implemented
}
func UnmarshalJSON(jsonstr string) (*JSONObject, *JSONArray) {
is := antlr.NewInputStream(jsonstr)
// Create the Lexer
lexer := parser.NewJSONLexer(is)
stream := antlr.NewCommonTokenStream(lexer, antlr.TokenDefaultChannel)
// Create the Parser
p := parser.NewJSONParser(stream)
// Finally parse the expression
var jsonLstnr *jsonListener = new(jsonListener)
antlr.ParseTreeWalkerDefault.Walk(jsonLstnr, p.Json())
if jsonLstnr.topObjCreated {
return jsonLstnr.topJsObj, nil
} else {
return nil, jsonLstnr.topJsArr
}
}