element

= '[' tag-name ',' attributes ',' element-list ']'

| '[' tag-name ',' attributes ']'

| '[' tag-name ',' element-list ']'

| '[' tag-name ']'

| string

;

tag-name

= string

;

attributes

= '{' attribute-list '}'

| '{' '}'

;

attribute-list

= attribute ',' attribute-list

| attribute

;

attribute

= attribute-name ':' attribute-value

;

attribute-name

= string

;

attribute-value

= string

| number

| 'true'

| 'false'

| 'null'

;

element-list

= element ',' element-list

| element

;