tree-sitter-html.ebnf

//
// From tree-sitter-html/src/grammar.json
//
//
// EBNF to generate railroad diagram at 
//      (IPV6) https://www.bottlecaps.de/rr/ui
//      (IPV4) https://rr.red-dove.com/ui
//

fragment ::=
	 _node*

doctype ::=
	 '<!' _doctype [^>]+ '>'

_doctype ::=
	 [Dd][Oo][Cc][Tt][Yy][Pp][Ee]

_node ::=
	 doctype
	| entity
	| text
	| element
	| script_element
	| style_element
	| erroneous_end_tag

element ::=
	 start_tag _node* ( end_tag | _implicit_end_tag )
	| self_closing_tag

script_element ::=
	 script_start_tag raw_text? end_tag

style_element ::=
	 style_start_tag raw_text? end_tag

start_tag ::=
	 '<' _start_tag_name attribute* '>'

script_start_tag ::=
	 '<' _script_start_tag_name attribute* '>'

style_start_tag ::=
	 '<' _style_start_tag_name attribute* '>'

self_closing_tag ::=
	 '<' _start_tag_name attribute* '/>'

end_tag ::=
	 '</' _end_tag_name '>'

erroneous_end_tag ::=
	 '</' erroneous_end_tag_name '>'

attribute ::=
	 attribute_name ( '=' ( attribute_value | quoted_attribute_value ) )?

attribute_name ::=
	 [^<>"'/= #x09#x0A#x0B#x0C#x0D]+

attribute_value ::=
	 [^<>"'= #x09#x0A#x0B#x0C#x0D]+

entity ::=
	 '&'('#'([xX][0-9a-fA-F]'{1,6}'|[0-9]'{1,5}')|[A-Za-z]'{1,30}')';'

quoted_attribute_value ::=
	 "'"  [^']+? "'" 
	| '"'  [^"]+? '"' 

text ::=
	 [^<>& #x09#x0A#x0B#x0C#x0D]([^<>&]*[^<>& #x09#x0A#x0B#x0C#x0D])?