realized there was backtracking and didn't want to backtrack so asked LLM for left factored ABNF
This commit is contained in:
Pagwin
parent
0e4613f27c
commit
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4 changed files with 152 additions and 467 deletions
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@ -1,3 +1,4 @@
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{-# LANGUAGE FlexibleContexts #-}
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{-# LANGUAGE OverloadedStrings #-}
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{-# LANGUAGE RankNTypes #-}
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@ -8,7 +9,7 @@ import IR
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import Text.Parsec
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import Text.Parsec.Combinator
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type Parser a = forall s u m t. (Stream s m t) => ParsecT s u m a
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type Parser a = forall s u m. (Stream s m Char) => ParsecT s u m a
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markdownParser :: Parser Document
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markdownParser = Doc <$> many block
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@ -35,7 +36,15 @@ htmlBlock :: Parser Element
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htmlBlock = pure $ HTML $ Raw ""
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paragraph :: Parser Element
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paragraph = pure $ Paragraph $ P ""
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paragraph = do
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first_text <- inlineText
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rem_text <- many (endOfLine >> inlineText)
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pure $ Paragraph $ P []
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inlineText :: Parser InlineText
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inlineText = choi
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blankline :: Parser Element
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blankline = pure $ BlankLine BL
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blankline = do
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endOfLine
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pure $ BlankLine BL
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140
markdown.abnf
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140
markdown.abnf
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@ -0,0 +1,140 @@
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; Left-Factored ABNF Grammar for Markdown with Embedded HTML
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; Based on RFC 5234 (ABNF) syntax
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; Top-level document structure
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document = *( block-element / CRLF )
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; Block-level elements (left-factored by common prefixes)
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block-element = heading / code-block / blockquote / list / horizontal-rule /
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html-block / paragraph
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; Headings (ATX-style: # ## ### etc.)
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heading = heading-prefix heading-content
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heading-prefix = 1*6"#" *WSP
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heading-content = *( inline-element ) line-ending
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; Code blocks (fenced with ``` or indented)
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code-block = fenced-code-block / indented-code-block
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fenced-code-block = code-fence [ language-info ] line-ending
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*( code-line )
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code-fence line-ending
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code-fence = "```"
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language-info = 1*( ALPHA / DIGIT / "-" / "+" / "." )
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indented-code-block = 1*( indented-code-line )
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indented-code-line = 4*WSP 1*VCHAR line-ending
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code-line = *VCHAR line-ending
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; Blockquotes
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blockquote = 1*( blockquote-line )
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blockquote-line = ">" [ WSP ] *( inline-element ) line-ending
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; Lists (left-factored by list marker)
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list = unordered-list / ordered-list
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unordered-list = 1*( unordered-list-item )
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ordered-list = 1*( ordered-list-item )
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unordered-list-item = unordered-marker list-item-content
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ordered-list-item = ordered-marker list-item-content
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unordered-marker = ( "*" / "-" / "+" ) WSP
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ordered-marker = 1*DIGIT "." WSP
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list-item-content = *( inline-element ) line-ending
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*( list-continuation )
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list-continuation = 2*WSP *( inline-element ) line-ending
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; Horizontal rule
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horizontal-rule = hr-dashes / hr-asterisks / hr-underscores
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hr-dashes = 3*( "-" ) *( WSP / "-" ) line-ending
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hr-asterisks = 3*( "*" ) *( WSP / "*" ) line-ending
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hr-underscores = 3*( "_" ) *( WSP / "_" ) line-ending
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; HTML blocks
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html-block = html-block-tag / html-comment-block / html-declaration
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html-block-tag = "<" tag-name *( WSP attribute ) [ WSP ] [ "/" ] ">"
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*( html-content )
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[ "</" tag-name ">" ]
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line-ending
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html-comment-block = "<!--" *( CHAR ) "-->" line-ending
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html-declaration = "<!" 1*ALPHA *( WSP / VCHAR ) ">" line-ending
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; Paragraphs (catch-all for regular text)
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paragraph = paragraph-line 1*( paragraph-continuation )
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paragraph-line = *( inline-element ) line-ending
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paragraph-continuation = !block-element-start *( inline-element ) line-ending
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block-element-start = "#" / ">" / ( 1*DIGIT "." WSP ) /
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( ( "*" / "-" / "+" ) WSP ) /
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"```" / 4*WSP / "<"
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; Inline elements (left-factored by opening characters)
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inline-element = emphasis / strong / code-span / link / image /
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html-inline / line-break / escaped-char / plain-text
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; Emphasis and strong (left-factored by delimiter)
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emphasis = emphasis-asterisk / emphasis-underscore
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strong = strong-asterisk / strong-underscore
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emphasis-asterisk = "*" emphasis-content "*"
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emphasis-underscore = "_" emphasis-content "_"
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strong-asterisk = "**" strong-content "**"
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strong-underscore = "__" strong-content "__"
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emphasis-content = 1*( !( "*" / line-ending ) inline-element )
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strong-content = 1*( !( "**" / line-ending ) inline-element )
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; Code spans
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code-span = code-delimiter code-span-content code-delimiter
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code-delimiter = 1*"`"
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code-span-content = 1*( !"`" CHAR )
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; Links and images (left-factored by opening bracket)
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link = link-reference / link-inline
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image = image-reference / image-inline
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link-reference = "[" link-text "]" "[" reference-id "]"
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link-inline = "[" link-text "]" "(" url [ WSP title ] ")"
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image-reference = "!" "[" alt-text "]" "[" reference-id "]"
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image-inline = "!" "[" alt-text "]" "(" url [ WSP title ] ")"
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link-text = 1*( !( "]" / line-ending ) inline-element )
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alt-text = 1*( !( "]" / line-ending ) CHAR )
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reference-id = 1*( !( "]" / line-ending ) CHAR )
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url = 1*( !( WSP / ")" / line-ending ) CHAR )
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title = ( DQUOTE title-content DQUOTE ) /
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( "'" title-content "'" ) /
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( "(" title-content ")" )
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title-content = *( !( DQUOTE / "'" / ")" ) CHAR )
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; Inline HTML
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html-inline = html-tag-inline / html-entity
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html-tag-inline = "<" tag-name *( WSP attribute ) [ WSP ] [ "/" ] ">"
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html-entity = "&" entity-name ";"
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entity-name = 1*( ALPHA / DIGIT )
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; HTML attributes and content
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tag-name = ALPHA *( ALPHA / DIGIT / "-" / ":" )
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attribute = attribute-name [ "=" attribute-value ]
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attribute-name = ( ALPHA / "_" / ":" ) *( ALPHA / DIGIT / "-" / "_" / ":" / "." )
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attribute-value = ( DQUOTE *( !DQUOTE CHAR ) DQUOTE ) /
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( "'" *( !"'" CHAR ) "'" ) /
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( 1*( !( WSP / ">" ) VCHAR ) )
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html-content = *( !( "</" ) CHAR )
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; Line breaks and escaped characters
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line-break = hard-line-break / soft-line-break
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hard-line-break = 2*WSP line-ending
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soft-line-break = line-ending
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escaped-char = "\" ( VCHAR / WSP )
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; Plain text (everything else)
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plain-text = 1*( !special-char CHAR )
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special-char = "*" / "_" / "`" / "[" / "]" / "(" / ")" /
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"<" / ">" / "#" / "+" / "-" / "." / "!" /
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"&" / "\" / line-ending
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; Basic definitions
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line-ending = CRLF / LF / CR
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WSP = SP / HTAB
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CHAR = %x00-10FFFF ; Any Unicode character
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VCHAR = %x21-7E ; Visible ASCII characters
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ALPHA = %x41-5A / %x61-7A ; A-Z / a-z
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DIGIT = %x30-39 ; 0-9
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SP = %x20 ; Space
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HTAB = %x09 ; Horizontal tab
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CR = %x0D ; Carriage return
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LF = %x0A ; Line feed
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CRLF = CR LF ; Internet standard newline
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DQUOTE = %x22 ; Double quote
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179
markdown.ebnf
179
markdown.ebnf
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@ -1,179 +0,0 @@
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(* Markdown EBNF Grammar with HTML Support *)
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document = { block } ;
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block = heading
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| code_block
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| quote_block
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| list
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| table
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| html_block
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| paragraph
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| blank_line ;
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(* Headings *)
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heading = atx_heading ;
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atx_heading = "#" { "#" } [ " " ] inline_text newline ;
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(* Code Blocks *)
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code_block = fenced_code_block;
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fenced_code_block = "```" [ language_identifier ] newline
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{ code_line }
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"```" newline ;
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code_line = { character - newline } newline ;
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language_identifier = { letter | digit | "-" | "+" } ;
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(* Quote Blocks *)
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quote_block = { ">" [ " " ] ( inline_text | "" ) newline } ;
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(* Lists *)
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list = unordered_list | ordered_list ;
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unordered_list = { unordered_list_item } ;
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ordered_list = { ordered_list_item } ;
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unordered_list_item = [ " " { " " } ] ( "*" | "+" | "-" ) " " inline_text newline
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{ continuation_line } ;
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ordered_list_item = [ " " { " " } ] digit { digit } "." " " inline_text newline
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{ continuation_line } ;
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continuation_line = " " inline_text newline ;
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(* Tables *)
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table = table_header table_separator { table_row } ;
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table_header = "|" { table_cell "|" } newline ;
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table_separator = "|" { table_align_spec "|" } newline ;
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table_row = "|" { table_cell "|" } newline ;
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table_cell = { character - ( "|" | newline ) } ;
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table_align_spec = [ ":" ] "-" { "-" } [ ":" ] ;
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(* HTML Support *)
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html_block = html_block_element;
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html_block_element = html_open_tag { html_content } html_close_tag newline
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| html_self_closing_tag newline
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| html_void_tag newline ;
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html_open_tag = "<" html_tag_name { " " html_attribute } [ " " ] ">" ;
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html_close_tag = "</" html_tag_name ">" ;
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html_self_closing_tag = "<" html_tag_name { " " html_attribute } [ " " ] "/>" ;
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html_void_tag = "<" html_void_tag_name { " " html_attribute } [ " " ] [ "/" ] ">" ;
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html_void_tag_name = "area" | "base" | "br" | "col" | "embed" | "hr" | "img" | "input"
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| "link" | "meta" | "param" | "source" | "track" | "wbr" ;
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html_tag_name = letter { letter | digit | "-" | "_" | ":" | "." } ;
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html_attribute = html_attribute_name [ "=" html_attribute_value ] ;
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html_attribute_name = ( letter | "_" | ":" ) { letter | digit | "-" | "_" | ":" | "." } ;
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html_attribute_value = html_quoted_value | html_unquoted_value ;
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html_quoted_value = ( '"' { character - '"' } '"' )
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| ( "'" { character - "'" } "'" ) ;
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html_unquoted_value = { character - ( " " | "\t" | "\n" | "\r" | ">" | "/" | "=" ) } ;
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html_content = html_text | html_element | html_comment | html_processing_instruction ;
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html_text = { character - "<" } ;
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html_element = html_open_tag { html_content } html_close_tag
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| html_self_closing_tag
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| html_void_tag ;
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html_comment = "<!--" { character - ( "-" "-" ">" ) | "-" character - ( "-" ">" ) | "-" "-" character - ">" } "-->" ;
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(* Paragraphs *)
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paragraph = inline_text { newline inline_text } newline ;
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(* Inline Elements *)
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inline_text = { inline_element } ;
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inline_element = emphasis
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| strong
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| code_span
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| link
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| image
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| autolink
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| line_break
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| plain_text ;
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emphasis = ( "*" non_asterisk_text "*" )
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| ( "_" non_underscore_text "_" ) ;
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strong = ( "**" non_asterisk_text "**" )
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| ( "__" non_underscore_text "__" ) ;
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code_span = "`" { "`" } non_backtick_text { "`" } "`" ;
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link = "[" link_text "]" "(" link_url [ " " link_title ] ")" ;
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image = "!" "[" alt_text "]" "(" image_url [ " " image_title ] ")" ;
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autolink = "<" ( url | email ) ">" ;
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line_break = " " newline | "\\" newline ;
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(* Text Content *)
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plain_text = { character - special_char } ;
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non_asterisk_text = { character - "*" } ;
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non_underscore_text = { character - "_" } ;
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non_backtick_text = { character - "`" } ;
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link_text = { character - ( "[" | "]" ) } ;
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alt_text = { character - ( "[" | "]" ) } ;
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link_url = { character - ( "(" | ")" | " " ) } ;
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image_url = { character - ( "(" | ")" | " " ) } ;
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link_title = quote_string ;
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image_title = quote_string ;
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quote_string = ( '"' { character - '"' } '"' )
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| ( "'" { character - "'" } "'" ) ;
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url = "http" [ "s" ] "://" { character - ">" } ;
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email = { character - ( "@" | ">" ) } "@" { character - ">" } ;
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(* Utilities *)
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blank_line = newline ;
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special_char = "*" | "_" | "`" | "[" | "]" | "(" | ")" | "#" | ">" | "|" | "!" | "\\" | "<" ;
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newline = "\n" | "\r\n" ;
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character = letter | digit | symbol | " " ;
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letter = "a" | "b" | "c" | "d" | "e" | "f" | "g" | "h" | "i" | "j" | "k" | "l" | "m"
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| "n" | "o" | "p" | "q" | "r" | "s" | "t" | "u" | "v" | "w" | "x" | "y" | "z"
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| "A" | "B" | "C" | "D" | "E" | "F" | "G" | "H" | "I" | "J" | "K" | "L" | "M"
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| "N" | "O" | "P" | "Q" | "R" | "S" | "T" | "U" | "V" | "W" | "X" | "Y" | "Z" ;
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digit = "0" | "1" | "2" | "3" | "4" | "5" | "6" | "7" | "8" | "9" ;
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symbol = "!" | "@" | "#" | "$" | "%" | "^" | "&" | "*" | "(" | ")" | "-" | "_" | "="
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| "+" | "[" | "]" | "{" | "}" | "\\" | "|" | ";" | ":" | "'" | '"' | "," | "."
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| "<" | ">" | "/" | "?" | "~" | "`" ;
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@ -1,285 +0,0 @@
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(* reStructuredText EBNF Grammar *)
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document = { block } ;
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block = section
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| transition
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| paragraph
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| literal_block
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| line_block
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| block_quote
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| doctest_block
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| table
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| bullet_list
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| enumerated_list
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| definition_list
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| field_list
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| option_list
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| directive
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| comment
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| substitution_definition
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| target
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| blank_line ;
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(* Sections *)
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section = section_title section_underline [ section_overline ] ;
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section_title = inline_text newline ;
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section_underline = section_adornment newline ;
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section_overline = section_adornment newline ;
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section_adornment = adornment_char { adornment_char } ;
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adornment_char = "!" | '"' | "#" | "$" | "%" | "&" | "'" | "(" | ")" | "*" | "+" | "," | "-" | "." | "/" | ":" | ";" | "<" | "=" | ">" | "?" | "@" | "[" | "\\" | "]" | "^" | "_" | "`" | "{" | "|" | "}" | "~" ;
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(* Transitions *)
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transition = transition_marker newline ;
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transition_marker = transition_char { transition_char } ;
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transition_char = adornment_char ;
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(* Paragraphs *)
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paragraph = inline_text { newline inline_text } newline ;
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(* Literal Blocks *)
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literal_block = literal_block_marker newline { indented_line } ;
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literal_block_marker = "::" | paragraph "::" ;
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indented_line = indent line_content newline ;
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indent = " " | "\t" ;
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line_content = { character - newline } ;
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(* Line Blocks *)
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line_block = { line_block_line } ;
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line_block_line = "|" [ " " ] inline_text newline ;
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(* Block Quotes *)
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block_quote = { indented_paragraph } [ attribution ] ;
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indented_paragraph = indent inline_text { newline indent inline_text } newline ;
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attribution = indent "-- " inline_text newline ;
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(* Doctest Blocks *)
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doctest_block = { doctest_line } ;
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doctest_line = ">>>" " " line_content newline
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| "..." " " line_content newline ;
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(* Tables *)
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table = simple_table | grid_table ;
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simple_table = simple_table_row { simple_table_row } simple_table_separator { simple_table_row } ;
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simple_table_row = { table_cell } newline ;
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simple_table_separator = "=" { ( "=" | " " ) } newline ;
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grid_table = grid_table_border { grid_table_row grid_table_border } ;
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|
||||
grid_table_border = "+" { ( "-" | "+" ) } newline ;
|
||||
|
||||
grid_table_row = "|" { table_cell "|" } newline ;
|
||||
|
||||
table_cell = { character - ( "|" | newline ) } ;
|
||||
|
||||
(* Lists *)
|
||||
bullet_list = { bullet_list_item } ;
|
||||
|
||||
bullet_list_item = bullet_marker " " list_item_content ;
|
||||
|
||||
bullet_marker = "*" | "+" | "-" | "•" | "‣" | "⁃" ;
|
||||
|
||||
enumerated_list = { enumerated_list_item } ;
|
||||
|
||||
enumerated_list_item = enumeration_marker " " list_item_content ;
|
||||
|
||||
enumeration_marker = ( digit { digit } "." )
|
||||
| ( digit { digit } ")" )
|
||||
| ( "(" digit { digit } ")" )
|
||||
| ( letter "." )
|
||||
| ( letter ")" )
|
||||
| ( "(" letter ")" )
|
||||
| ( roman "." )
|
||||
| ( roman ")" )
|
||||
| ( "(" roman ")" )
|
||||
| "#." | "#)" | "(#)" ;
|
||||
|
||||
list_item_content = inline_text { newline [ indent ] inline_text } newline ;
|
||||
|
||||
definition_list = { definition_list_item } ;
|
||||
|
||||
definition_list_item = term newline indent definition newline ;
|
||||
|
||||
term = inline_text ;
|
||||
|
||||
definition = inline_text { newline indent inline_text } ;
|
||||
|
||||
(* Field Lists *)
|
||||
field_list = { field_list_item } ;
|
||||
|
||||
field_list_item = ":" field_name ":" " " field_body newline ;
|
||||
|
||||
field_name = { letter | digit | " " | "-" | "_" } ;
|
||||
|
||||
field_body = inline_text { newline indent inline_text } ;
|
||||
|
||||
(* Option Lists *)
|
||||
option_list = { option_list_item } ;
|
||||
|
||||
option_list_item = option_group " " option_description newline ;
|
||||
|
||||
option_group = option { ", " option } ;
|
||||
|
||||
option = short_option | long_option ;
|
||||
|
||||
short_option = "-" letter [ " " option_argument ] ;
|
||||
|
||||
long_option = "--" { letter | digit | "-" } [ "=" option_argument ] ;
|
||||
|
||||
option_argument = { letter | digit | "-" | "_" } ;
|
||||
|
||||
option_description = inline_text { newline indent inline_text } ;
|
||||
|
||||
(* Directives *)
|
||||
directive = ".." " " directive_name "::" [ " " directive_arguments ] newline
|
||||
[ directive_options ]
|
||||
[ blank_line ]
|
||||
[ directive_content ] ;
|
||||
|
||||
directive_name = { letter | digit | "-" | "_" } ;
|
||||
|
||||
directive_arguments = { character - newline } ;
|
||||
|
||||
directive_options = { directive_option } ;
|
||||
|
||||
directive_option = indent ":" option_name ":" [ " " option_value ] newline ;
|
||||
|
||||
option_name = { letter | digit | "-" | "_" } ;
|
||||
|
||||
option_value = { character - newline } ;
|
||||
|
||||
directive_content = { indented_line } ;
|
||||
|
||||
(* Comments *)
|
||||
comment = ".." [ " " comment_text ] newline { indented_line } ;
|
||||
|
||||
comment_text = { character - newline } ;
|
||||
|
||||
(* Substitution Definitions *)
|
||||
substitution_definition = ".." " " "|" substitution_name "|" " " directive_name "::" [ " " directive_arguments ] newline
|
||||
[ directive_options ]
|
||||
[ directive_content ] ;
|
||||
|
||||
substitution_name = { character - ( "|" | newline ) } ;
|
||||
|
||||
(* Targets *)
|
||||
target = internal_target | external_target ;
|
||||
|
||||
internal_target = ".." " " "_" target_name ":" newline ;
|
||||
|
||||
external_target = ".." " " "_" target_name ":" " " target_url newline ;
|
||||
|
||||
target_name = { character - ( ":" | newline ) } ;
|
||||
|
||||
target_url = { character - newline } ;
|
||||
|
||||
(* Inline Elements *)
|
||||
inline_text = { inline_element } ;
|
||||
|
||||
inline_element = emphasis
|
||||
| strong
|
||||
| literal
|
||||
| interpreted_text
|
||||
| phrase_reference
|
||||
| substitution_reference
|
||||
| inline_internal_target
|
||||
| hyperlink_reference
|
||||
| footnote_reference
|
||||
| citation_reference
|
||||
| inline_literal
|
||||
| plain_text ;
|
||||
|
||||
emphasis = "*" emphasis_text "*" ;
|
||||
|
||||
strong = "**" strong_text "**" ;
|
||||
|
||||
literal = "``" literal_text "``" ;
|
||||
|
||||
interpreted_text = "`" interpreted_text_content "`" [ role_suffix ]
|
||||
| role_prefix "`" interpreted_text_content "`" ;
|
||||
|
||||
role_prefix = ":" role_name ":" ;
|
||||
|
||||
role_suffix = ":" role_name ":" ;
|
||||
|
||||
role_name = { letter | digit | "-" | "_" | "." } ;
|
||||
|
||||
interpreted_text_content = { character - "`" } ;
|
||||
|
||||
phrase_reference = "`" phrase_reference_text "`_" [ "_" ] ;
|
||||
|
||||
phrase_reference_text = { character - ( "`" | "<" ) } [ " " "<" target_url ">" ] ;
|
||||
|
||||
substitution_reference = "|" substitution_name "|" [ "_" [ "_" ] ] ;
|
||||
|
||||
inline_internal_target = "_`" target_text "`" ;
|
||||
|
||||
target_text = { character - "`" } ;
|
||||
|
||||
hyperlink_reference = reference_name "_" [ "_" ] ;
|
||||
|
||||
reference_name = { letter | digit | "-" | "_" | "." } ;
|
||||
|
||||
footnote_reference = "[" footnote_label "]_" ;
|
||||
|
||||
footnote_label = digit { digit } | "#" [ footnote_name ] | "*" ;
|
||||
|
||||
footnote_name = { letter | digit | "-" | "_" } ;
|
||||
|
||||
citation_reference = "[" citation_label "]_" ;
|
||||
|
||||
citation_label = { letter | digit | "-" | "_" | "." } ;
|
||||
|
||||
inline_literal = "`" "`" literal_content "`" "`" ;
|
||||
|
||||
literal_content = { character - "`" } ;
|
||||
|
||||
(* Text Content *)
|
||||
plain_text = { character - markup_char } ;
|
||||
|
||||
emphasis_text = { character - ( "*" | newline ) } ;
|
||||
|
||||
strong_text = { character - ( "*" | newline ) } ;
|
||||
|
||||
literal_text = { character - ( "`" | newline ) } ;
|
||||
|
||||
markup_char = "*" | "`" | "_" | "|" | "[" | "]" | ":" | "." | ">" | "<" ;
|
||||
|
||||
(* Utilities *)
|
||||
blank_line = newline ;
|
||||
|
||||
roman = "i" | "ii" | "iii" | "iv" | "v" | "vi" | "vii" | "viii" | "ix" | "x"
|
||||
| "I" | "II" | "III" | "IV" | "V" | "VI" | "VII" | "VIII" | "IX" | "X" ;
|
||||
|
||||
newline = "\n" | "\r\n" ;
|
||||
|
||||
character = letter | digit | symbol | " " ;
|
||||
|
||||
letter = "a" | "b" | "c" | "d" | "e" | "f" | "g" | "h" | "i" | "j" | "k" | "l" | "m"
|
||||
| "n" | "o" | "p" | "q" | "r" | "s" | "t" | "u" | "v" | "w" | "x" | "y" | "z"
|
||||
| "A" | "B" | "C" | "D" | "E" | "F" | "G" | "H" | "I" | "J" | "K" | "L" | "M"
|
||||
| "N" | "O" | "P" | "Q" | "R" | "S" | "T" | "U" | "V" | "W" | "X" | "Y" | "Z" ;
|
||||
|
||||
digit = "0" | "1" | "2" | "3" | "4" | "5" | "6" | "7" | "8" | "9" ;
|
||||
|
||||
symbol = "!" | "@" | "#" | "$" | "%" | "^" | "&" | "*" | "(" | ")" | "-" | "_" | "="
|
||||
| "+" | "[" | "]" | "{" | "}" | "\\" | "|" | ";" | ":" | "'" | '"' | "," | "."
|
||||
| "<" | ">" | "/" | "?" | "~" | "`" ;
|
||||
Loading…
Reference in a new issue