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| // | |
| // HTML | |
| // | |
| html = _{ | |
| SOI | |
| ~ node_comment* | |
| ~ doctype? | |
| ~ node* | |
| ~ EOI | |
| } | |
| // | |
| // DOCTYPE | |
| // | |
| doctype_name = _{ "doctype" | "DOCTYPE" } | |
| doctype = _{ chevron_left_bang ~ doctype_name ~ attr* ~ chevron_right} | |
| // | |
| // NODES | |
| // | |
| node = _{ node_comment | node_element | node_text | WHITESPACE} | |
| node_comment = _{ comment_tag_start ~ (!comment_tag_end ~ ANY)* ~ comment_tag_end } | |
| node_text = { (!(chevron_left | comment_tag_start ) ~ ANY)+ } | |
| node_element = { el_void | el_void_xml | el_process_instruct | el_raw_text | el_normal | el_dangling } | |
| // | |
| // COMMENTS | |
| // | |
| comment_tag_start = @{ chevron_left_bang ~ "--" } | |
| comment_tag_end = @{ "--" ~ chevron_right } | |
| // | |
| // ATTRIBUTES | |
| // | |
| attr_key = { ASCII_ALPHA ~ text_chars* } | |
| attr_value = { (!PEEK ~ ANY)* } | |
| attr_quoted = _{PUSH(quote) ~ attr_value ~ POP } | |
| attr_non_quoted = _{ (!WHITESPACE ~ ANY)* } | |
| attr = { attr_key ~ (equal ~ (attr_quoted | attr_non_quoted))? } | |
| // | |
| // ELEMENTS | |
| // | |
| el_name = @{ ASCII_ALPHA ~ text_chars* } | |
| // Void element aka self-closing element | |
| // Ex: <hr> | |
| el_void_name_html = @{ | |
| "area" | |
| | "base" | |
| | "br" | |
| | "col" | |
| | "command" | |
| | "embed" | |
| | "hr" | |
| | "img" | |
| | "input" | |
| | "keygen" | |
| | "link" | |
| | "meta" | |
| | "param" | |
| | "source" | |
| | "track" | |
| | "wbr" | |
| | "meta" | |
| } | |
| // NOTE: This should not have to be a rule, but people doesn't know what void elements are... | |
| el_void_name_svg = @{ | |
| "path" | |
| | "polygon" | |
| | "rect" | |
| | "circle" | |
| } | |
| el_void_name = @{ el_void_name_html | el_void_name_svg } | |
| el_void = _{ chevron_left ~ el_void_name ~ attr* ~ (chevron_right | chevron_right_closed) } | |
| el_void_xml = _{ chevron_left ~ el_name ~ attr* ~ chevron_right_closed } | |
| // Open elements are default element that can take children | |
| // and have both a start tag and an end tag | |
| // Ex: <html lang="en"></html> | |
| el_normal = _{ el_normal_start ~ (!el_normal_end ~ node)* ~ el_normal_end } | |
| el_normal_start = _{ chevron_left ~ PUSH(el_name) ~ attr* ~ chevron_right} | |
| el_normal_end = { chevron_left_closed ~ POP ~ chevron_right} | |
| // Raw text elements are elements with text/script content that | |
| // might interfere with the normal html syntax | |
| el_raw_text_name = _{ "style" | "script" } | |
| el_raw_text = _{ el_raw_text_start ~ (!el_raw_text_end ~ ANY)* ~ el_raw_text_end } | |
| el_raw_text_start = _{ chevron_left ~ PUSH(el_raw_text_name) ~ attr* ~ chevron_right} | |
| el_raw_text_end = _{ chevron_left_closed ~ POP ~ chevron_right} | |
| // XML processing instruction | |
| // Ex: <?xml version="1.0" ?> | |
| el_process_instruct = { chevron_left_question ~ "xml" ~ attr* ~ chevron_right_question } | |
| // Catch dangling elements | |
| // Ex: <div/></div> | |
| el_dangling = { chevron_left_closed ~ el_name ~ chevron_right} | |
| // | |
| // SYMBOLS / CHARACTERS | |
| // | |
| text_chars = _{'a'..'z' | 'A'..'Z' | "_" | "-" | ":" |'0'..'9'} | |
| chevron_left = _{ "<" } | |
| chevron_left_closed = _{ "</" } | |
| chevron_left_bang = _{ "<!" } | |
| chevron_left_question = _{ "<?" } | |
| chevron_right = _{ ">" } | |
| chevron_right_closed = _{ "/>" } | |
| chevron_right_question = _{ "?>" } | |
| equal = _{ "=" } | |
| quote_dubble = _{ "\"" } | |
| quote_single = _{ "'" } | |
| quote = _{ quote_dubble | quote_single } | |
| WHITESPACE = _{ " " | "\t" | "\r" | "\n" } |
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