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%% name = TinyMarkdown::Parser
%% ast-location = ::TinyMarkdown
%% document = ast DocumentNode(compiler, position, content)
%% para = ast ParaNode(compiler, position, content)
%% plain = ast PlainNode(compiler, position, content)
%% text = ast TextNode(compiler, position, content)
%% headline = ast HeadlineNode(compiler, position, level, content)
%% block_quote = ast BlockQuoteNode(compiler, position, content)
%% verbatim = ast VerbatimNode(compiler, position, content)
%% horizontal_rule = ast HorizontalRuleNode(compiler, position)
%% bullet_list = ast BulletListNode(compiler, position, content)
%% list = ast ListNode(compiler, position, content)
%% bullet_list_item = ast BulletListItemNode(compiler, position, content)
%% linebreak = ast LineBreakNode(compiler, position)
%% inline_element = ast InlineElementNode(compiler, position, name, content)
%% {
attr_reader :ast
class Position
attr_accessor :pos, :line, :col
def initialize(compiler)
@pos = compiler.pos
@line = compiler.current_line
@col = compiler.current_column
end
end
def position
Position.new(self)
end
}
root = Start
Start = &. Doc:c { @ast = c }
Doc = Block*:c
~document(self, position, c)
Block = BlankLine*
( BlockQuote
| Verbatim
| HorizontalRule
| Heading
| BulletList
| Para
| Plain )
Para = NonindentSpace Inlines:a BlankLine+ ~para(self, position, a)
Plain = Inlines:a ~plain(self, position, a)
AtxInline = !Newline !(Sp '#'* Sp Newline) Inline:c { c }
AtxStart = < /######|#####|####|###|##|#/ > { text.length }
AtxHeading = AtxStart:level Sp AtxInline+:c (Sp "#"* Sp)? Newline ~headline(self, position, level, c)
Heading = AtxHeading
BlockQuote = BlockQuoteRaw:c ~block_quote(self, position, c)
BlockQuoteRaw = ( '>' ' '? Line:c { c })+:cc { cc }
NonblankIndentedLine = !BlankLine IndentedLine:c { c }
VerbatimChunk = (BlankLine { text(self,position,"\n") } )*:c1
(NonblankIndentedLine:c { [c, text(self,position,"\n")] })+:c2 { c1 + c2.flatten }
Verbatim = VerbatimChunk+:cc ~verbatim(self, position, cc.flatten)
HorizontalRule = NonindentSpace
( '*' Sp '*' Sp '*' (Sp '*')*
| '-' Sp '-' Sp '-' (Sp '-')*
| '_' Sp '_' Sp '_' (Sp '_')*)
Sp Newline BlankLine+ ~horizontal_rule(self, position)
Bullet = !HorizontalRule NonindentSpace ('+' | '*' | '-') Spacechar+
BulletList = &Bullet ListTight:c ~bullet_list(self, position, c)
ListTight = ListItemTight+:cc
BlankLine* !Bullet
{ cc }
ListItemTight = Bullet ListBlock:c ~bullet_list_item(self, position, c)
ListBlock = !BlankLine Line:c ListBlockLine*:cc { cc.unshift(c) }
ListBlockLine = !BlankLine
!( Indent? Bullet )
!HorizontalRule
OptionallyIndentedLine
Inlines = ( !Endline Inline:c { c }
| Endline:c &Inline { c } )+:cc Endline?
{ cc }
Inline = Str
| Endline
| Space
| Strong
| Emph
| Code
| Symbol
Space = Spacechar+:c ~text(self, position, c.join(""))
Str = NormalChar+:c1
StrChunk*:c2
~text(self, position, (c1+c2).join(""))
StrChunk = (NormalChar:c { [c] } | '_'+:c1 NormalChar:c2 { c1.push(c2) } )+:cc { cc.flatten }
Endline = LineBreak | TerminalEndline | NormalEndline
NormalEndline = Sp Newline !BlankLine !'>' !AtxStart
!(Line ('='+ | '-'+) Newline)
~text(self, position, "\n")
TerminalEndline = Sp Newline Eof ~text(self, position, "\n")
LineBreak = " " NormalEndline ~linebreak(self, position)
Symbol = SpecialChar:c ~text(self, position, c)
Emph = EmphStar | EmphUl
Whitespace = Spacechar | Newline
EmphStar = '*' !Whitespace
( !'*' Inline:b { b }
| StrongStar:b { b }
)+:c
'*'
~inline_element(self, position, :em, c)
EmphUl = '_' !Whitespace
( !'_' Inline:b { b }
| StrongUl:b { b }
)+:c
'_'
~inline_element(self, position, :em, c)
Strong = StrongStar | StrongUl
StrongStar = "**" !Whitespace
( !"**" Inline:b { b })+:c
"**"
~inline_element(self, position, :strong, c)
StrongUl = "__" !Whitespace
( !"__" Inline:b { b })+:c
"__"
~inline_element(self, position, :strong, c)
Ticks1 = < /`/ > !'`' { text }
Ticks2 = < /``/ > !'`' { text }
Code = ( Ticks1 Sp
( !'`' Nonspacechar )+:c
Sp Ticks1 ~text(self, position, c.join(""))
| Ticks2 Sp
( !'``' Nonspacechar )+:c
Sp Ticks2 ~text(self, position, c.join(""))
):cc
~inline_element(self, position, :code, [cc])
BlankLine = Sp Newline
Quoted = '"' (!'"' .)* '"' | '\'' (!'\'' .)* '\''
Eof = !.
Spacechar = < / |\t/ > { text }
Nonspacechar = !Spacechar !Newline <.> { text }
Newline = "\n" | "\r" "\n"?
Sp = Spacechar*
Spnl = Sp (Newline Sp)?
##SpecialChar = '~' | '*' | '_' | '`' | '&' | '[' | ']' | '(' | ')' | '<' | '!' | '#' | "\\" | "'" | '"'
SpecialChar = < /[~*_`&\[\]()<!#\\'"]/ > { text }
NormalChar = !( SpecialChar | Spacechar | Newline ) <.> { text }
AlphanumericAscii = < /[A-Za-z0-9]/ > { text }
Digit = < /[0-9]/ > { text }
NonindentSpace = < / | | |/ > { text }
Indent = < /\t| / > { text }
IndentedLine = Indent Line:c { c }
OptionallyIndentedLine = Indent? Line
Line = RawLine:c { c }
RawLine = (( < /[^\r\n]*/ > ) Newline { text } | < /.+/ > Eof { text }):c ~text(self, position, c)
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