You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
1 lines
45 KiB
1 lines
45 KiB
import{NodeType,NodeProp,NodeSet,Tree,Parser,parseMixed}from"@lezer/common";import{styleTags,tags,Tag}from"@lezer/highlight";class CompositeBlock{constructor(type,value,from,hash,end,children,positions){this.type=type;this.value=value;this.from=from;this.hash=hash;this.end=end;this.children=children;this.positions=positions;this.hashProp=[[NodeProp.contextHash,hash]]}static create(type,value,from,parentHash,end){let hash=parentHash+(parentHash<<8)+type+(value<<4)|0;return new CompositeBlock(type,value,from,hash,end,[],[])}addChild(child,pos){if(child.prop(NodeProp.contextHash)!=this.hash)child=new Tree(child.type,child.children,child.positions,child.length,this.hashProp);this.children.push(child);this.positions.push(pos)}toTree(nodeSet,end=this.end){let last=this.children.length-1;if(last>=0)end=Math.max(end,this.positions[last]+this.children[last].length+this.from);let tree=new Tree(nodeSet.types[this.type],this.children,this.positions,end-this.from).balance({makeTree:(children,positions,length)=>new Tree(NodeType.none,children,positions,length,this.hashProp)});return tree}}var Type;(function(Type){Type[Type["Document"]=1]="Document";Type[Type["CodeBlock"]=2]="CodeBlock";Type[Type["FencedCode"]=3]="FencedCode";Type[Type["Blockquote"]=4]="Blockquote";Type[Type["HorizontalRule"]=5]="HorizontalRule";Type[Type["BulletList"]=6]="BulletList";Type[Type["OrderedList"]=7]="OrderedList";Type[Type["ListItem"]=8]="ListItem";Type[Type["ATXHeading1"]=9]="ATXHeading1";Type[Type["ATXHeading2"]=10]="ATXHeading2";Type[Type["ATXHeading3"]=11]="ATXHeading3";Type[Type["ATXHeading4"]=12]="ATXHeading4";Type[Type["ATXHeading5"]=13]="ATXHeading5";Type[Type["ATXHeading6"]=14]="ATXHeading6";Type[Type["SetextHeading1"]=15]="SetextHeading1";Type[Type["SetextHeading2"]=16]="SetextHeading2";Type[Type["HTMLBlock"]=17]="HTMLBlock";Type[Type["LinkReference"]=18]="LinkReference";Type[Type["Paragraph"]=19]="Paragraph";Type[Type["CommentBlock"]=20]="CommentBlock";Type[Type["ProcessingInstructionBlock"]=21]="ProcessingInstructionBlock";Type[Type["Escape"]=22]="Escape";Type[Type["Entity"]=23]="Entity";Type[Type["HardBreak"]=24]="HardBreak";Type[Type["Emphasis"]=25]="Emphasis";Type[Type["StrongEmphasis"]=26]="StrongEmphasis";Type[Type["Link"]=27]="Link";Type[Type["Image"]=28]="Image";Type[Type["InlineCode"]=29]="InlineCode";Type[Type["HTMLTag"]=30]="HTMLTag";Type[Type["Comment"]=31]="Comment";Type[Type["ProcessingInstruction"]=32]="ProcessingInstruction";Type[Type["URL"]=33]="URL";Type[Type["HeaderMark"]=34]="HeaderMark";Type[Type["QuoteMark"]=35]="QuoteMark";Type[Type["ListMark"]=36]="ListMark";Type[Type["LinkMark"]=37]="LinkMark";Type[Type["EmphasisMark"]=38]="EmphasisMark";Type[Type["CodeMark"]=39]="CodeMark";Type[Type["CodeText"]=40]="CodeText";Type[Type["CodeInfo"]=41]="CodeInfo";Type[Type["LinkTitle"]=42]="LinkTitle";Type[Type["LinkLabel"]=43]="LinkLabel"})(Type||(Type={}));class LeafBlock{constructor(start,content){this.start=start;this.content=content;this.marks=[];this.parsers=[]}}class Line{constructor(){this.text="";this.baseIndent=0;this.basePos=0;this.depth=0;this.markers=[];this.pos=0;this.indent=0;this.next=-1}forward(){if(this.basePos>this.pos)this.forwardInner()}forwardInner(){let newPos=this.skipSpace(this.basePos);this.indent=this.countIndent(newPos,this.pos,this.indent);this.pos=newPos;this.next=newPos==this.text.length?-1:this.text.charCodeAt(newPos)}skipSpace(from){return skipSpace(this.text,from)}reset(text){this.text=text;this.baseIndent=this.basePos=this.pos=this.indent=0;this.forwardInner();this.depth=1;while(this.markers.length)this.markers.pop()}moveBase(to){this.basePos=to;this.baseIndent=this.countIndent(to,this.pos,this.indent)}moveBaseColumn(indent){this.baseIndent=indent;this.basePos=this.findColumn(indent)}addMarker(elt){this.markers.push(elt)}countIndent(to,from=0,indent=0){for(let i=from;i<to;i++)indent+=this.text.charCodeAt(i)==9?4-indent%4:1;return indent}findColumn(goal){let i=0;for(let indent=0;i<this.text.length&&indent<goal;i++)indent+=this.text.charCodeAt(i)==9?4-indent%4:1;return i}scrub(){if(!this.baseIndent)return this.text;let result="";for(let i=0;i<this.basePos;i++)result+=" ";return result+this.text.slice(this.basePos)}}function skipForList(bl,cx,line){if(line.pos==line.text.length||bl!=cx.block&&line.indent>=cx.stack[line.depth+1].value+line.baseIndent)return true;if(line.indent>=line.baseIndent+4)return false;let size=(bl.type==Type.OrderedList?isOrderedList:isBulletList)(line,cx,false);return size>0&&(bl.type!=Type.BulletList||isHorizontalRule(line,cx,false)<0)&&line.text.charCodeAt(line.pos+size-1)==bl.value}const DefaultSkipMarkup={[Type.Blockquote](bl,cx,line){if(line.next!=62)return false;line.markers.push(elt(Type.QuoteMark,cx.lineStart+line.pos,cx.lineStart+line.pos+1));line.moveBase(line.pos+(space(line.text.charCodeAt(line.pos+1))?2:1));bl.end=cx.lineStart+line.text.length;return true},[Type.ListItem](bl,_cx,line){if(line.indent<line.baseIndent+bl.value&&line.next>-1)return false;line.moveBaseColumn(line.baseIndent+bl.value);return true},[Type.OrderedList]:skipForList,[Type.BulletList]:skipForList,[Type.Document](){return true}};function space(ch){return ch==32||ch==9||ch==10||ch==13}function skipSpace(line,i=0){while(i<line.length&&space(line.charCodeAt(i)))i++;return i}function skipSpaceBack(line,i,to){while(i>to&&space(line.charCodeAt(i-1)))i--;return i}function isFencedCode(line){if(line.next!=96&&line.next!=126)return-1;let pos=line.pos+1;while(pos<line.text.length&&line.text.charCodeAt(pos)==line.next)pos++;if(pos<line.pos+3)return-1;if(line.next==96)for(let i=pos;i<line.text.length;i++)if(line.text.charCodeAt(i)==96)return-1;return pos}function isBlockquote(line){return line.next!=62?-1:line.text.charCodeAt(line.pos+1)==32?2:1}function isHorizontalRule(line,cx,breaking){if(line.next!=42&&line.next!=45&&line.next!=95)return-1;let count=1;for(let pos=line.pos+1;pos<line.text.length;pos++){let ch=line.text.charCodeAt(pos);if(ch==line.next)count++;else if(!space(ch))return-1}if(breaking&&line.next==45&&isSetextUnderline(line)>-1&&line.depth==cx.stack.length)return-1;return count<3?-1:1}function inList(cx,type){for(let i=cx.stack.length-1;i>=0;i--)if(cx.stack[i].type==type)return true;return false}function isBulletList(line,cx,breaking){return(line.next==45||line.next==43||line.next==42)&&(line.pos==line.text.length-1||space(line.text.charCodeAt(line.pos+1)))&&(!breaking||inList(cx,Type.BulletList)||line.skipSpace(line.pos+2)<line.text.length)?1:-1}function isOrderedList(line,cx,breaking){let pos=line.pos,next=line.next;for(;;){if(next>=48&&next<=57)pos++;else break;if(pos==line.text.length)return-1;next=line.text.charCodeAt(pos)}if(pos==line.pos||pos>line.pos+9||next!=46&&next!=41||pos<line.text.length-1&&!space(line.text.charCodeAt(pos+1))||breaking&&!inList(cx,Type.OrderedList)&&(line.skipSpace(pos+1)==line.text.length||pos>line.pos+1||line.next!=49))return-1;return pos+1-line.pos}function isAtxHeading(line){if(line.next!=35)return-1;let pos=line.pos+1;while(pos<line.text.length&&line.text.charCodeAt(pos)==35)pos++;if(pos<line.text.length&&line.text.charCodeAt(pos)!=32)return-1;let size=pos-line.pos;return size>6?-1:size}function isSetextUnderline(line){if(line.next!=45&&line.next!=61||line.indent>=line.baseIndent+4)return-1;let pos=line.pos+1;while(pos<line.text.length&&line.text.charCodeAt(pos)==line.next)pos++;let end=pos;while(pos<line.text.length&&space(line.text.charCodeAt(pos)))pos++;return pos==line.text.length?end:-1}const EmptyLine=/^[ \t]*$/,CommentEnd=/-->/,ProcessingEnd=/\?>/;const HTMLBlockStyle=[[/^<(?:script|pre|style)(?:\s|>|$)/i,/<\/(?:script|pre|style)>/i],[/^\s*<!--/,CommentEnd],[/^\s*<\?/,ProcessingEnd],[/^\s*<![A-Z]/,/>/],[/^\s*<!\[CDATA\[/,/\]\]>/],[/^\s*<\/?(?:address|article|aside|base|basefont|blockquote|body|caption|center|col|colgroup|dd|details|dialog|dir|div|dl|dt|fieldset|figcaption|figure|footer|form|frame|frameset|h1|h2|h3|h4|h5|h6|head|header|hr|html|iframe|legend|li|link|main|menu|menuitem|nav|noframes|ol|optgroup|option|p|param|section|source|summary|table|tbody|td|tfoot|th|thead|title|tr|track|ul)(?:\s|\/?>|$)/i,EmptyLine],[/^\s*(?:<\/[a-z][\w-]*\s*>|<[a-z][\w-]*(\s+[a-z:_][\w-.]*(?:\s*=\s*(?:[^\s"'=<>`]+|'[^']*'|"[^"]*"))?)*\s*>)\s*$/i,EmptyLine]];function isHTMLBlock(line,_cx,breaking){if(line.next!=60)return-1;let rest=line.text.slice(line.pos);for(let i=0,e=HTMLBlockStyle.length-(breaking?1:0);i<e;i++)if(HTMLBlockStyle[i][0].test(rest))return i;return-1}function getListIndent(line,pos){let indentAfter=line.countIndent(pos,line.pos,line.indent);let indented=line.countIndent(line.skipSpace(pos),pos,indentAfter);return indented>=indentAfter+5?indentAfter+1:indented}function addCodeText(marks,from,to){let last=marks.length-1;if(last>=0&&marks[last].to==from&&marks[last].type==Type.CodeText)marks[last].to=to;else marks.push(elt(Type.CodeText,from,to))}const DefaultBlockParsers={LinkReference:undefined,IndentedCode(cx,line){let base=line.baseIndent+4;if(line.indent<base)return false;let start=line.findColumn(base);let from=cx.lineStart+start,to=cx.lineStart+line.text.length;let marks=[],pendingMarks=[];addCodeText(marks,from,to);while(cx.nextLine()&&line.depth>=cx.stack.length){if(line.pos==line.text.length){addCodeText(pendingMarks,cx.lineStart-1,cx.lineStart);for(let m of line.markers)pendingMarks.push(m)}else if(line.indent<base){break}else{if(pendingMarks.length){for(let m of pendingMarks){if(m.type==Type.CodeText)addCodeText(marks,m.from,m.to);else marks.push(m)}pendingMarks=[]}addCodeText(marks,cx.lineStart-1,cx.lineStart);for(let m of line.markers)marks.push(m);to=cx.lineStart+line.text.length;let codeStart=cx.lineStart+line.findColumn(line.baseIndent+4);if(codeStart<to)addCodeText(marks,codeStart,to)}}if(pendingMarks.length){pendingMarks=pendingMarks.filter(m=>m.type!=Type.CodeText);if(pendingMarks.length)line.markers=pendingMarks.concat(line.markers)}cx.addNode(cx.buffer.writeElements(marks,-from).finish(Type.CodeBlock,to-from),from);return true},FencedCode(cx,line){let fenceEnd=isFencedCode(line);if(fenceEnd<0)return false;let from=cx.lineStart+line.pos,ch=line.next,len=fenceEnd-line.pos;let infoFrom=line.skipSpace(fenceEnd),infoTo=skipSpaceBack(line.text,line.text.length,infoFrom);let marks=[elt(Type.CodeMark,from,from+len)];if(infoFrom<infoTo)marks.push(elt(Type.CodeInfo,cx.lineStart+infoFrom,cx.lineStart+infoTo));for(let first=true;cx.nextLine()&&line.depth>=cx.stack.length;first=false){let i=line.pos;if(line.indent-line.baseIndent<4)while(i<line.text.length&&line.text.charCodeAt(i)==ch)i++;if(i-line.pos>=len&&line.skipSpace(i)==line.text.length){for(let m of line.markers)marks.push(m);marks.push(elt(Type.CodeMark,cx.lineStart+line.pos,cx.lineStart+i));cx.nextLine();break}else{if(!first)addCodeText(marks,cx.lineStart-1,cx.lineStart);for(let m of line.markers)marks.push(m);let textStart=cx.lineStart+line.basePos,textEnd=cx.lineStart+line.text.length;if(textStart<textEnd)addCodeText(marks,textStart,textEnd)}}cx.addNode(cx.buffer.writeElements(marks,-from).finish(Type.FencedCode,cx.prevLineEnd()-from),from);return true},Blockquote(cx,line){let size=isBlockquote(line);if(size<0)return false;cx.startContext(Type.Blockquote,line.pos);cx.addNode(Type.QuoteMark,cx.lineStart+line.pos,cx.lineStart+line.pos+1);line.moveBase(line.pos+size);return null},HorizontalRule(cx,line){if(isHorizontalRule(line,cx,false)<0)return false;let from=cx.lineStart+line.pos;cx.nextLine();cx.addNode(Type.HorizontalRule,from);return true},BulletList(cx,line){let size=isBulletList(line,cx,false);if(size<0)return false;if(cx.block.type!=Type.BulletList)cx.startContext(Type.BulletList,line.basePos,line.next);let newBase=getListIndent(line,line.pos+1);cx.startContext(Type.ListItem,line.basePos,newBase-line.baseIndent);cx.addNode(Type.ListMark,cx.lineStart+line.pos,cx.lineStart+line.pos+size);line.moveBaseColumn(newBase);return null},OrderedList(cx,line){let size=isOrderedList(line,cx,false);if(size<0)return false;if(cx.block.type!=Type.OrderedList)cx.startContext(Type.OrderedList,line.basePos,line.text.charCodeAt(line.pos+size-1));let newBase=getListIndent(line,line.pos+size);cx.startContext(Type.ListItem,line.basePos,newBase-line.baseIndent);cx.addNode(Type.ListMark,cx.lineStart+line.pos,cx.lineStart+line.pos+size);line.moveBaseColumn(newBase);return null},ATXHeading(cx,line){let size=isAtxHeading(line);if(size<0)return false;let off=line.pos,from=cx.lineStart+off;let endOfSpace=skipSpaceBack(line.text,line.text.length,off),after=endOfSpace;while(after>off&&line.text.charCodeAt(after-1)==line.next)after--;if(after==endOfSpace||after==off||!space(line.text.charCodeAt(after-1)))after=line.text.length;let buf=cx.buffer.write(Type.HeaderMark,0,size).writeElements(cx.parser.parseInline(line.text.slice(off+size+1,after),from+size+1),-from);if(after<line.text.length)buf.write(Type.HeaderMark,after-off,endOfSpace-off);let node=buf.finish(Type.ATXHeading1-1+size,line.text.length-off);cx.nextLine();cx.addNode(node,from);return true},HTMLBlock(cx,line){let type=isHTMLBlock(line,cx,false);if(type<0)return false;let from=cx.lineStart+line.pos,end=HTMLBlockStyle[type][1];let marks=[],trailing=end!=EmptyLine;while(!end.test(line.text)&&cx.nextLine()){if(line.depth<cx.stack.length){trailing=false;break}for(let m of line.markers)marks.push(m)}if(trailing)cx.nextLine();let nodeType=end==CommentEnd?Type.CommentBlock:end==ProcessingEnd?Type.ProcessingInstructionBlock:Type.HTMLBlock;let to=cx.prevLineEnd();cx.addNode(cx.buffer.writeElements(marks,-from).finish(nodeType,to-from),from);return true},SetextHeading:undefined};class LinkReferenceParser{constructor(leaf){this.stage=0;this.elts=[];this.pos=0;this.start=leaf.start;this.advance(leaf.content)}nextLine(cx,line,leaf){if(this.stage==-1)return false;let content=leaf.content+"\n"+line.scrub();let finish=this.advance(content);if(finish>-1&&finish<content.length)return this.complete(cx,leaf,finish);return false}finish(cx,leaf){if((this.stage==2||this.stage==3)&&skipSpace(leaf.content,this.pos)==leaf.content.length)return this.complete(cx,leaf,leaf.content.length);return false}complete(cx,leaf,len){cx.addLeafElement(leaf,elt(Type.LinkReference,this.start,this.start+len,this.elts));return true}nextStage(elt){if(elt){this.pos=elt.to-this.start;this.elts.push(elt);this.stage++;return true}if(elt===false)this.stage=-1;return false}advance(content){for(;;){if(this.stage==-1){return-1}else if(this.stage==0){if(!this.nextStage(parseLinkLabel(content,this.pos,this.start,true)))return-1;if(content.charCodeAt(this.pos)!=58)return this.stage=-1;this.elts.push(elt(Type.LinkMark,this.pos+this.start,this.pos+this.start+1));this.pos++}else if(this.stage==1){if(!this.nextStage(parseURL(content,skipSpace(content,this.pos),this.start)))return-1}else if(this.stage==2){let skip=skipSpace(content,this.pos),end=0;if(skip>this.pos){let title=parseLinkTitle(content,skip,this.start);if(title){let titleEnd=lineEnd(content,title.to-this.start);if(titleEnd>0){this.nextStage(title);end=titleEnd}}}if(!end)end=lineEnd(content,this.pos);return end>0&&end<content.length?end:-1}else{return lineEnd(content,this.pos)}}}}function lineEnd(text,pos){for(;pos<text.length;pos++){let next=text.charCodeAt(pos);if(next==10)break;if(!space(next))return-1}return pos}class SetextHeadingParser{nextLine(cx,line,leaf){let underline=line.depth<cx.stack.length?-1:isSetextUnderline(line);let next=line.next;if(underline<0)return false;let underlineMark=elt(Type.HeaderMark,cx.lineStart+line.pos,cx.lineStart+underline);cx.nextLine();cx.addLeafElement(leaf,elt(next==61?Type.SetextHeading1:Type.SetextHeading2,leaf.start,cx.prevLineEnd(),[...cx.parser.parseInline(leaf.content,leaf.start),underlineMark]));return true}finish(){return false}}const DefaultLeafBlocks={LinkReference(_,leaf){return leaf.content.charCodeAt(0)==91?new LinkReferenceParser(leaf):null},SetextHeading(){return new SetextHeadingParser}};const DefaultEndLeaf=[(_,line)=>isAtxHeading(line)>=0,(_,line)=>isFencedCode(line)>=0,(_,line)=>isBlockquote(line)>=0,(p,line)=>isBulletList(line,p,true)>=0,(p,line)=>isOrderedList(line,p,true)>=0,(p,line)=>isHorizontalRule(line,p,true)>=0,(p,line)=>isHTMLBlock(line,p,true)>=0];const scanLineResult={text:"",end:0};class BlockContext{constructor(parser,input,fragments,ranges){this.parser=parser;this.input=input;this.ranges=ranges;this.line=new Line;this.atEnd=false;this.dontInject=new Set;this.stoppedAt=null;this.rangeI=0;this.to=ranges[ranges.length-1].to;this.lineStart=this.absoluteLineStart=this.absoluteLineEnd=ranges[0].from;this.block=CompositeBlock.create(Type.Document,0,this.lineStart,0,0);this.stack=[this.block];this.fragments=fragments.length?new FragmentCursor(fragments,input):null;this.readLine()}get parsedPos(){return this.absoluteLineStart}advance(){if(this.stoppedAt!=null&&this.absoluteLineStart>this.stoppedAt)return this.finish();let{line}=this;for(;;){while(line.depth<this.stack.length)this.finishContext();for(let mark of line.markers)this.addNode(mark.type,mark.from,mark.to);if(line.pos<line.text.length)break;if(!this.nextLine())return this.finish()}if(this.fragments&&this.reuseFragment(line.basePos))return null;start:for(;;){for(let type of this.parser.blockParsers)if(type){let result=type(this,line);if(result!=false){if(result==true)return null;line.forward();continue start}}break}let leaf=new LeafBlock(this.lineStart+line.pos,line.text.slice(line.pos));for(let parse of this.parser.leafBlockParsers)if(parse){let parser=parse(this,leaf);if(parser)leaf.parsers.push(parser)}lines:while(this.nextLine()){if(line.pos==line.text.length)break;if(line.indent<line.baseIndent+4){for(let stop of this.parser.endLeafBlock)if(stop(this,line,leaf))break lines}for(let parser of leaf.parsers)if(parser.nextLine(this,line,leaf))return null;leaf.content+="\n"+line.scrub();for(let m of line.markers)leaf.marks.push(m)}this.finishLeaf(leaf);return null}stopAt(pos){if(this.stoppedAt!=null&&this.stoppedAt<pos)throw new RangeError("Can't move stoppedAt forward");this.stoppedAt=pos}reuseFragment(start){if(!this.fragments.moveTo(this.absoluteLineStart+start,this.absoluteLineStart)||!this.fragments.matches(this.block.hash))return false;let taken=this.fragments.takeNodes(this);if(!taken)return false;let withoutGaps=taken,end=this.absoluteLineStart+taken;for(let i=1;i<this.ranges.length;i++){let gapFrom=this.ranges[i-1].to,gapTo=this.ranges[i].from;if(gapFrom>=this.lineStart&&gapTo<end)withoutGaps-=gapTo-gapFrom}this.lineStart+=withoutGaps;this.absoluteLineStart+=taken;this.moveRangeI();if(this.absoluteLineStart<this.to){this.lineStart++;this.absoluteLineStart++;this.readLine()}else{this.atEnd=true;this.readLine()}return true}get depth(){return this.stack.length}parentType(depth=this.depth-1){return this.parser.nodeSet.types[this.stack[depth].type]}nextLine(){this.lineStart+=this.line.text.length;if(this.absoluteLineEnd>=this.to){this.absoluteLineStart=this.absoluteLineEnd;this.atEnd=true;this.readLine();return false}else{this.lineStart++;this.absoluteLineStart=this.absoluteLineEnd+1;this.moveRangeI();this.readLine();return true}}moveRangeI(){while(this.rangeI<this.ranges.length-1&&this.absoluteLineStart>=this.ranges[this.rangeI].to){this.rangeI++;this.absoluteLineStart=Math.max(this.absoluteLineStart,this.ranges[this.rangeI].from)}}scanLine(start){let r=scanLineResult;r.end=start;if(start>=this.to){r.text=""}else{r.text=this.lineChunkAt(start);r.end+=r.text.length;if(this.ranges.length>1){let textOffset=this.absoluteLineStart,rangeI=this.rangeI;while(this.ranges[rangeI].to<r.end){rangeI++;let nextFrom=this.ranges[rangeI].from;let after=this.lineChunkAt(nextFrom);r.end=nextFrom+after.length;r.text=r.text.slice(0,this.ranges[rangeI-1].to-textOffset)+after;textOffset=r.end-r.text.length}}}return r}readLine(){let{line}=this,{text,end}=this.scanLine(this.absoluteLineStart);this.absoluteLineEnd=end;line.reset(text);for(;line.depth<this.stack.length;line.depth++){let cx=this.stack[line.depth],handler=this.parser.skipContextMarkup[cx.type];if(!handler)throw new Error("Unhandled block context "+Type[cx.type]);if(!handler(cx,this,line))break;line.forward()}}lineChunkAt(pos){let next=this.input.chunk(pos),text;if(!this.input.lineChunks){let eol=next.indexOf("\n");text=eol<0?next:next.slice(0,eol)}else{text=next=="\n"?"":next}return pos+text.length>this.to?text.slice(0,this.to-pos):text}prevLineEnd(){return this.atEnd?this.lineStart:this.lineStart-1}startContext(type,start,value=0){this.block=CompositeBlock.create(type,value,this.lineStart+start,this.block.hash,this.lineStart+this.line.text.length);this.stack.push(this.block)}startComposite(type,start,value=0){this.startContext(this.parser.getNodeType(type),start,value)}addNode(block,from,to){if(typeof block=="number")block=new Tree(this.parser.nodeSet.types[block],none,none,(to!==null&&to!==void 0?to:this.prevLineEnd())-from);this.block.addChild(block,from-this.block.from)}addElement(elt){this.block.addChild(elt.toTree(this.parser.nodeSet),elt.from-this.block.from)}addLeafElement(leaf,elt){this.addNode(this.buffer.writeElements(injectMarks(elt.children,leaf.marks),-elt.from).finish(elt.type,elt.to-elt.from),elt.from)}finishContext(){let cx=this.stack.pop();let top=this.stack[this.stack.length-1];top.addChild(cx.toTree(this.parser.nodeSet),cx.from-top.from);this.block=top}finish(){while(this.stack.length>1)this.finishContext();return this.addGaps(this.block.toTree(this.parser.nodeSet,this.lineStart))}addGaps(tree){return this.ranges.length>1?injectGaps(this.ranges,0,tree.topNode,this.ranges[0].from,this.dontInject):tree}finishLeaf(leaf){for(let parser of leaf.parsers)if(parser.finish(this,leaf))return;let inline=injectMarks(this.parser.parseInline(leaf.content,leaf.start),leaf.marks);this.addNode(this.buffer.writeElements(inline,-leaf.start).finish(Type.Paragraph,leaf.content.length),leaf.start)}elt(type,from,to,children){if(typeof type=="string")return elt(this.parser.getNodeType(type),from,to,children);return new TreeElement(type,from)}get buffer(){return new Buffer(this.parser.nodeSet)}}function injectGaps(ranges,rangeI,tree,offset,dont){if(dont.has(tree.tree))return tree.tree;let rangeEnd=ranges[rangeI].to;let children=[],positions=[],start=tree.from+offset;function movePastNext(upto,inclusive){while(inclusive?upto>=rangeEnd:upto>rangeEnd){let size=ranges[rangeI+1].from-rangeEnd;offset+=size;upto+=size;rangeI++;rangeEnd=ranges[rangeI].to}}for(let ch=tree.firstChild;ch;ch=ch.nextSibling){movePastNext(ch.from+offset,true);let from=ch.from+offset,node;if(ch.to+offset>rangeEnd){node=injectGaps(ranges,rangeI,ch,offset,dont);movePastNext(ch.to+offset,false)}else{node=ch.toTree()}children.push(node);positions.push(from-start)}movePastNext(tree.to+offset,false);return new Tree(tree.type,children,positions,tree.to+offset-start,tree.tree?tree.tree.propValues:undefined)}class MarkdownParser extends Parser{constructor(nodeSet,blockParsers,leafBlockParsers,blockNames,endLeafBlock,skipContextMarkup,inlineParsers,inlineNames,wrappers){super();this.nodeSet=nodeSet;this.blockParsers=blockParsers;this.leafBlockParsers=leafBlockParsers;this.blockNames=blockNames;this.endLeafBlock=endLeafBlock;this.skipContextMarkup=skipContextMarkup;this.inlineParsers=inlineParsers;this.inlineNames=inlineNames;this.wrappers=wrappers;this.nodeTypes=Object.create(null);for(let t of nodeSet.types)this.nodeTypes[t.name]=t.id}createParse(input,fragments,ranges){let parse=new BlockContext(this,input,fragments,ranges);for(let w of this.wrappers)parse=w(parse,input,fragments,ranges);return parse}configure(spec){let config=resolveConfig(spec);if(!config)return this;let{nodeSet,skipContextMarkup}=this;let blockParsers=this.blockParsers.slice(),leafBlockParsers=this.leafBlockParsers.slice(),blockNames=this.blockNames.slice(),inlineParsers=this.inlineParsers.slice(),inlineNames=this.inlineNames.slice(),endLeafBlock=this.endLeafBlock.slice(),wrappers=this.wrappers;if(nonEmpty(config.defineNodes)){skipContextMarkup=Object.assign({},skipContextMarkup);let nodeTypes=nodeSet.types.slice(),styles;for(let s of config.defineNodes){let{name,block,composite,style}=typeof s=="string"?{name:s}:s;if(nodeTypes.some(t=>t.name==name))continue;if(composite)skipContextMarkup[nodeTypes.length]=(bl,cx,line)=>composite(cx,line,bl.value);let id=nodeTypes.length;let group=composite?["Block","BlockContext"]:!block?undefined:id>=Type.ATXHeading1&&id<=Type.SetextHeading2?["Block","LeafBlock","Heading"]:["Block","LeafBlock"];nodeTypes.push(NodeType.define({id:id,name:name,props:group&&[[NodeProp.group,group]]}));if(style){if(!styles)styles={};if(Array.isArray(style)||style instanceof Tag)styles[name]=style;else Object.assign(styles,style)}}nodeSet=new NodeSet(nodeTypes);if(styles)nodeSet=nodeSet.extend(styleTags(styles))}if(nonEmpty(config.props))nodeSet=nodeSet.extend(...config.props);if(nonEmpty(config.remove)){for(let rm of config.remove){let block=this.blockNames.indexOf(rm),inline=this.inlineNames.indexOf(rm);if(block>-1)blockParsers[block]=leafBlockParsers[block]=undefined;if(inline>-1)inlineParsers[inline]=undefined}}if(nonEmpty(config.parseBlock)){for(let spec of config.parseBlock){let found=blockNames.indexOf(spec.name);if(found>-1){blockParsers[found]=spec.parse;leafBlockParsers[found]=spec.leaf}else{let pos=spec.before?findName(blockNames,spec.before):spec.after?findName(blockNames,spec.after)+1:blockNames.length-1;blockParsers.splice(pos,0,spec.parse);leafBlockParsers.splice(pos,0,spec.leaf);blockNames.splice(pos,0,spec.name)}if(spec.endLeaf)endLeafBlock.push(spec.endLeaf)}}if(nonEmpty(config.parseInline)){for(let spec of config.parseInline){let found=inlineNames.indexOf(spec.name);if(found>-1){inlineParsers[found]=spec.parse}else{let pos=spec.before?findName(inlineNames,spec.before):spec.after?findName(inlineNames,spec.after)+1:inlineNames.length-1;inlineParsers.splice(pos,0,spec.parse);inlineNames.splice(pos,0,spec.name)}}}if(config.wrap)wrappers=wrappers.concat(config.wrap);return new MarkdownParser(nodeSet,blockParsers,leafBlockParsers,blockNames,endLeafBlock,skipContextMarkup,inlineParsers,inlineNames,wrappers)}getNodeType(name){let found=this.nodeTypes[name];if(found==null)throw new RangeError(`Unknown node type '${name}'`);return found}parseInline(text,offset){let cx=new InlineContext(this,text,offset);outer:for(let pos=offset;pos<cx.end;){let next=cx.char(pos);for(let token of this.inlineParsers)if(token){let result=token(cx,next,pos);if(result>=0){pos=result;continue outer}}pos++}return cx.resolveMarkers(0)}}function nonEmpty(a){return a!=null&&a.length>0}function resolveConfig(spec){if(!Array.isArray(spec))return spec;if(spec.length==0)return null;let conf=resolveConfig(spec[0]);if(spec.length==1)return conf;let rest=resolveConfig(spec.slice(1));if(!rest||!conf)return conf||rest;let conc=(a,b)=>(a||none).concat(b||none);let wrapA=conf.wrap,wrapB=rest.wrap;return{props:conc(conf.props,rest.props),defineNodes:conc(conf.defineNodes,rest.defineNodes),parseBlock:conc(conf.parseBlock,rest.parseBlock),parseInline:conc(conf.parseInline,rest.parseInline),remove:conc(conf.remove,rest.remove),wrap:!wrapA?wrapB:!wrapB?wrapA:(inner,input,fragments,ranges)=>wrapA(wrapB(inner,input,fragments,ranges),input,fragments,ranges)}}function findName(names,name){let found=names.indexOf(name);if(found<0)throw new RangeError(`Position specified relative to unknown parser ${name}`);return found}let nodeTypes=[NodeType.none];for(let i=1,name;name=Type[i];i++){nodeTypes[i]=NodeType.define({id:i,name:name,props:i>=Type.Escape?[]:[[NodeProp.group,i in DefaultSkipMarkup?["Block","BlockContext"]:["Block","LeafBlock"]]]})}const none=[];class Buffer{constructor(nodeSet){this.nodeSet=nodeSet;this.content=[];this.nodes=[]}write(type,from,to,children=0){this.content.push(type,from,to,4+children*4);return this}writeElements(elts,offset=0){for(let e of elts)e.writeTo(this,offset);return this}finish(type,length){return Tree.build({buffer:this.content,nodeSet:this.nodeSet,reused:this.nodes,topID:type,length:length})}}class Element{constructor(type,from,to,children=none){this.type=type;this.from=from;this.to=to;this.children=children}writeTo(buf,offset){let startOff=buf.content.length;buf.writeElements(this.children,offset);buf.content.push(this.type,this.from+offset,this.to+offset,buf.content.length+4-startOff)}toTree(nodeSet){return new Buffer(nodeSet).writeElements(this.children,-this.from).finish(this.type,this.to-this.from)}}class TreeElement{constructor(tree,from){this.tree=tree;this.from=from}get to(){return this.from+this.tree.length}get type(){return this.tree.type.id}get children(){return none}writeTo(buf,offset){buf.nodes.push(this.tree);buf.content.push(buf.nodes.length-1,this.from+offset,this.to+offset,-1)}toTree(){return this.tree}}function elt(type,from,to,children){return new Element(type,from,to,children)}const EmphasisUnderscore={resolve:"Emphasis",mark:"EmphasisMark"};const EmphasisAsterisk={resolve:"Emphasis",mark:"EmphasisMark"};const LinkStart={},ImageStart={};class InlineDelimiter{constructor(type,from,to,side){this.type=type;this.from=from;this.to=to;this.side=side}}const Escapable="!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~";let Punctuation=/[!"#$%&'()*+,\-.\/:;<=>?@\[\\\]^_`{|}~\xA1\u2010-\u2027]/;try{Punctuation=new RegExp("[\\p{Pc}|\\p{Pd}|\\p{Pe}|\\p{Pf}|\\p{Pi}|\\p{Po}|\\p{Ps}]","u")}catch(_){}const DefaultInline={Escape(cx,next,start){if(next!=92||start==cx.end-1)return-1;let escaped=cx.char(start+1);for(let i=0;i<Escapable.length;i++)if(Escapable.charCodeAt(i)==escaped)return cx.append(elt(Type.Escape,start,start+2));return-1},Entity(cx,next,start){if(next!=38)return-1;let m=/^(?:#\d+|#x[a-f\d]+|\w+);/i.exec(cx.slice(start+1,start+31));return m?cx.append(elt(Type.Entity,start,start+1+m[0].length)):-1},InlineCode(cx,next,start){if(next!=96||start&&cx.char(start-1)==96)return-1;let pos=start+1;while(pos<cx.end&&cx.char(pos)==96)pos++;let size=pos-start,curSize=0;for(;pos<cx.end;pos++){if(cx.char(pos)==96){curSize++;if(curSize==size&&cx.char(pos+1)!=96)return cx.append(elt(Type.InlineCode,start,pos+1,[elt(Type.CodeMark,start,start+size),elt(Type.CodeMark,pos+1-size,pos+1)]))}else{curSize=0}}return-1},HTMLTag(cx,next,start){if(next!=60||start==cx.end-1)return-1;let after=cx.slice(start+1,cx.end);let url=/^(?:[a-z][-\w+.]+:[^\s>]+|[a-z\d.!#$%&'*+/=?^_`{|}~-]+@[a-z\d](?:[a-z\d-]{0,61}[a-z\d])?(?:\.[a-z\d](?:[a-z\d-]{0,61}[a-z\d])?)*)>/i.exec(after);if(url)return cx.append(elt(Type.URL,start,start+1+url[0].length));let comment=/^!--[^>](?:-[^-]|[^-])*?-->/i.exec(after);if(comment)return cx.append(elt(Type.Comment,start,start+1+comment[0].length));let procInst=/^\?[^]*?\?>/.exec(after);if(procInst)return cx.append(elt(Type.ProcessingInstruction,start,start+1+procInst[0].length));let m=/^(?:![A-Z][^]*?>|!\[CDATA\[[^]*?\]\]>|\/\s*[a-zA-Z][\w-]*\s*>|\s*[a-zA-Z][\w-]*(\s+[a-zA-Z:_][\w-.:]*(?:\s*=\s*(?:[^\s"'=<>`]+|'[^']*'|"[^"]*"))?)*\s*(\/\s*)?>)/.exec(after);if(!m)return-1;return cx.append(elt(Type.HTMLTag,start,start+1+m[0].length))},Emphasis(cx,next,start){if(next!=95&&next!=42)return-1;let pos=start+1;while(cx.char(pos)==next)pos++;let before=cx.slice(start-1,start),after=cx.slice(pos,pos+1);let pBefore=Punctuation.test(before),pAfter=Punctuation.test(after);let sBefore=/\s|^$/.test(before),sAfter=/\s|^$/.test(after);let leftFlanking=!sAfter&&(!pAfter||sBefore||pBefore);let rightFlanking=!sBefore&&(!pBefore||sAfter||pAfter);let canOpen=leftFlanking&&(next==42||!rightFlanking||pBefore);let canClose=rightFlanking&&(next==42||!leftFlanking||pAfter);return cx.append(new InlineDelimiter(next==95?EmphasisUnderscore:EmphasisAsterisk,start,pos,(canOpen?1:0)|(canClose?2:0)))},HardBreak(cx,next,start){if(next==92&&cx.char(start+1)==10)return cx.append(elt(Type.HardBreak,start,start+2));if(next==32){let pos=start+1;while(cx.char(pos)==32)pos++;if(cx.char(pos)==10&&pos>=start+2)return cx.append(elt(Type.HardBreak,start,pos+1))}return-1},Link(cx,next,start){return next==91?cx.append(new InlineDelimiter(LinkStart,start,start+1,1)):-1},Image(cx,next,start){return next==33&&cx.char(start+1)==91?cx.append(new InlineDelimiter(ImageStart,start,start+2,1)):-1},LinkEnd(cx,next,start){if(next!=93)return-1;for(let i=cx.parts.length-1;i>=0;i--){let part=cx.parts[i];if(part instanceof InlineDelimiter&&(part.type==LinkStart||part.type==ImageStart)){if(!part.side||cx.skipSpace(part.to)==start&&!/[(\[]/.test(cx.slice(start+1,start+2))){cx.parts[i]=null;return-1}let content=cx.takeContent(i);let link=cx.parts[i]=finishLink(cx,content,part.type==LinkStart?Type.Link:Type.Image,part.from,start+1);if(part.type==LinkStart)for(let j=0;j<i;j++){let p=cx.parts[j];if(p instanceof InlineDelimiter&&p.type==LinkStart)p.side=0}return link.to}}return-1}};function finishLink(cx,content,type,start,startPos){let{text}=cx,next=cx.char(startPos),endPos=startPos;content.unshift(elt(Type.LinkMark,start,start+(type==Type.Image?2:1)));content.push(elt(Type.LinkMark,startPos-1,startPos));if(next==40){let pos=cx.skipSpace(startPos+1);let dest=parseURL(text,pos-cx.offset,cx.offset),title;if(dest){pos=cx.skipSpace(dest.to);title=parseLinkTitle(text,pos-cx.offset,cx.offset);if(title)pos=cx.skipSpace(title.to)}if(cx.char(pos)==41){content.push(elt(Type.LinkMark,startPos,startPos+1));endPos=pos+1;if(dest)content.push(dest);if(title)content.push(title);content.push(elt(Type.LinkMark,pos,endPos))}}else if(next==91){let label=parseLinkLabel(text,startPos-cx.offset,cx.offset,false);if(label){content.push(label);endPos=label.to}}return elt(type,start,endPos,content)}function parseURL(text,start,offset){let next=text.charCodeAt(start);if(next==60){for(let pos=start+1;pos<text.length;pos++){let ch=text.charCodeAt(pos);if(ch==62)return elt(Type.URL,start+offset,pos+1+offset);if(ch==60||ch==10)return false}return null}else{let depth=0,pos=start;for(let escaped=false;pos<text.length;pos++){let ch=text.charCodeAt(pos);if(space(ch)){break}else if(escaped){escaped=false}else if(ch==40){depth++}else if(ch==41){if(!depth)break;depth--}else if(ch==92){escaped=true}}return pos>start?elt(Type.URL,start+offset,pos+offset):pos==text.length?null:false}}function parseLinkTitle(text,start,offset){let next=text.charCodeAt(start);if(next!=39&&next!=34&&next!=40)return false;let end=next==40?41:next;for(let pos=start+1,escaped=false;pos<text.length;pos++){let ch=text.charCodeAt(pos);if(escaped)escaped=false;else if(ch==end)return elt(Type.LinkTitle,start+offset,pos+1+offset);else if(ch==92)escaped=true}return null}function parseLinkLabel(text,start,offset,requireNonWS){for(let escaped=false,pos=start+1,end=Math.min(text.length,pos+999);pos<end;pos++){let ch=text.charCodeAt(pos);if(escaped)escaped=false;else if(ch==93)return requireNonWS?false:elt(Type.LinkLabel,start+offset,pos+1+offset);else{if(requireNonWS&&!space(ch))requireNonWS=false;if(ch==91)return false;else if(ch==92)escaped=true}}return null}class InlineContext{constructor(parser,text,offset){this.parser=parser;this.text=text;this.offset=offset;this.parts=[]}char(pos){return pos>=this.end?-1:this.text.charCodeAt(pos-this.offset)}get end(){return this.offset+this.text.length}slice(from,to){return this.text.slice(from-this.offset,to-this.offset)}append(elt){this.parts.push(elt);return elt.to}addDelimiter(type,from,to,open,close){return this.append(new InlineDelimiter(type,from,to,(open?1:0)|(close?2:0)))}addElement(elt){return this.append(elt)}resolveMarkers(from){for(let i=from;i<this.parts.length;i++){let close=this.parts[i];if(!(close instanceof InlineDelimiter&&close.type.resolve&&close.side&2))continue;let emp=close.type==EmphasisUnderscore||close.type==EmphasisAsterisk;let closeSize=close.to-close.from;let open,j=i-1;for(;j>=from;j--){let part=this.parts[j];if(part instanceof InlineDelimiter&&part.side&1&&part.type==close.type&&!(emp&&(close.side&1||part.side&2)&&(part.to-part.from+closeSize)%3==0&&((part.to-part.from)%3||closeSize%3))){open=part;break}}if(!open)continue;let type=close.type.resolve,content=[];let start=open.from,end=close.to;if(emp){let size=Math.min(2,open.to-open.from,closeSize);start=open.to-size;end=close.from+size;type=size==1?"Emphasis":"StrongEmphasis"}if(open.type.mark)content.push(this.elt(open.type.mark,start,open.to));for(let k=j+1;k<i;k++){if(this.parts[k]instanceof Element)content.push(this.parts[k]);this.parts[k]=null}if(close.type.mark)content.push(this.elt(close.type.mark,close.from,end));let element=this.elt(type,start,end,content);this.parts[j]=emp&&open.from!=start?new InlineDelimiter(open.type,open.from,start,open.side):null;let keep=this.parts[i]=emp&&close.to!=end?new InlineDelimiter(close.type,end,close.to,close.side):null;if(keep)this.parts.splice(i,0,element);else this.parts[i]=element}let result=[];for(let i=from;i<this.parts.length;i++){let part=this.parts[i];if(part instanceof Element)result.push(part)}return result}findOpeningDelimiter(type){for(let i=this.parts.length-1;i>=0;i--){let part=this.parts[i];if(part instanceof InlineDelimiter&&part.type==type)return i}return null}takeContent(startIndex){let content=this.resolveMarkers(startIndex);this.parts.length=startIndex;return content}skipSpace(from){return skipSpace(this.text,from-this.offset)+this.offset}elt(type,from,to,children){if(typeof type=="string")return elt(this.parser.getNodeType(type),from,to,children);return new TreeElement(type,from)}}function injectMarks(elements,marks){if(!marks.length)return elements;if(!elements.length)return marks;let elts=elements.slice(),eI=0;for(let mark of marks){while(eI<elts.length&&elts[eI].to<mark.to)eI++;if(eI<elts.length&&elts[eI].from<mark.from){let e=elts[eI];if(e instanceof Element)elts[eI]=new Element(e.type,e.from,e.to,injectMarks(e.children,[mark]))}else{elts.splice(eI++,0,mark)}}return elts}const NotLast=[Type.CodeBlock,Type.ListItem,Type.OrderedList,Type.BulletList];class FragmentCursor{constructor(fragments,input){this.fragments=fragments;this.input=input;this.i=0;this.fragment=null;this.fragmentEnd=-1;this.cursor=null;if(fragments.length)this.fragment=fragments[this.i++]}nextFragment(){this.fragment=this.i<this.fragments.length?this.fragments[this.i++]:null;this.cursor=null;this.fragmentEnd=-1}moveTo(pos,lineStart){while(this.fragment&&this.fragment.to<=pos)this.nextFragment();if(!this.fragment||this.fragment.from>(pos?pos-1:0))return false;if(this.fragmentEnd<0){let end=this.fragment.to;while(end>0&&this.input.read(end-1,end)!="\n")end--;this.fragmentEnd=end?end-1:0}let c=this.cursor;if(!c){c=this.cursor=this.fragment.tree.cursor();c.firstChild()}let rPos=pos+this.fragment.offset;while(c.to<=rPos)if(!c.parent())return false;for(;;){if(c.from>=rPos)return this.fragment.from<=lineStart;if(!c.childAfter(rPos))return false}}matches(hash){let tree=this.cursor.tree;return tree&&tree.prop(NodeProp.contextHash)==hash}takeNodes(cx){let cur=this.cursor,off=this.fragment.offset,fragEnd=this.fragmentEnd-(this.fragment.openEnd?1:0);let start=cx.absoluteLineStart,end=start,blockI=cx.block.children.length;let prevEnd=end,prevI=blockI;for(;;){if(cur.to-off>fragEnd){if(cur.type.isAnonymous&&cur.firstChild())continue;break}cx.dontInject.add(cur.tree);cx.addNode(cur.tree,cur.from-off);if(cur.type.is("Block")){if(NotLast.indexOf(cur.type.id)<0){end=cur.to-off;blockI=cx.block.children.length}else{end=prevEnd;blockI=prevI;prevEnd=cur.to-off;prevI=cx.block.children.length}}if(!cur.nextSibling())break}while(cx.block.children.length>blockI){cx.block.children.pop();cx.block.positions.pop()}return end-start}}const markdownHighlighting=styleTags({"Blockquote/...":tags.quote,HorizontalRule:tags.contentSeparator,"ATXHeading1/... SetextHeading1/...":tags.heading1,"ATXHeading2/... SetextHeading2/...":tags.heading2,"ATXHeading3/...":tags.heading3,"ATXHeading4/...":tags.heading4,"ATXHeading5/...":tags.heading5,"ATXHeading6/...":tags.heading6,"Comment CommentBlock":tags.comment,Escape:tags.escape,Entity:tags.character,"Emphasis/...":tags.emphasis,"StrongEmphasis/...":tags.strong,"Link/... Image/...":tags.link,"OrderedList/... BulletList/...":tags.list,"BlockQuote/...":tags.quote,"InlineCode CodeText":tags.monospace,URL:tags.url,"HeaderMark HardBreak QuoteMark ListMark LinkMark EmphasisMark CodeMark":tags.processingInstruction,"CodeInfo LinkLabel":tags.labelName,LinkTitle:tags.string,Paragraph:tags.content});const parser=new MarkdownParser(new NodeSet(nodeTypes).extend(markdownHighlighting),Object.keys(DefaultBlockParsers).map(n=>DefaultBlockParsers[n]),Object.keys(DefaultBlockParsers).map(n=>DefaultLeafBlocks[n]),Object.keys(DefaultBlockParsers),DefaultEndLeaf,DefaultSkipMarkup,Object.keys(DefaultInline).map(n=>DefaultInline[n]),Object.keys(DefaultInline),[]);function leftOverSpace(node,from,to){let ranges=[];for(let n=node.firstChild,pos=from;;n=n.nextSibling){let nextPos=n?n.from:to;if(nextPos>pos)ranges.push({from:pos,to:nextPos});if(!n)break;pos=n.to}return ranges}function parseCode(config){let{codeParser,htmlParser}=config;let wrap=parseMixed((node,input)=>{let id=node.type.id;if(codeParser&&(id==Type.CodeBlock||id==Type.FencedCode)){let info="";if(id==Type.FencedCode){let infoNode=node.node.getChild(Type.CodeInfo);if(infoNode)info=input.read(infoNode.from,infoNode.to)}let parser=codeParser(info);if(parser)return{parser:parser,overlay:node=>node.type.id==Type.CodeText}}else if(htmlParser&&(id==Type.HTMLBlock||id==Type.HTMLTag)){return{parser:htmlParser,overlay:leftOverSpace(node.node,node.from,node.to)}}return null});return{wrap:wrap}}const StrikethroughDelim={resolve:"Strikethrough",mark:"StrikethroughMark"};const Strikethrough={defineNodes:[{name:"Strikethrough",style:{"Strikethrough/...":tags.strikethrough}},{name:"StrikethroughMark",style:tags.processingInstruction}],parseInline:[{name:"Strikethrough",parse(cx,next,pos){if(next!=126||cx.char(pos+1)!=126||cx.char(pos+2)==126)return-1;let before=cx.slice(pos-1,pos),after=cx.slice(pos+2,pos+3);let sBefore=/\s|^$/.test(before),sAfter=/\s|^$/.test(after);let pBefore=Punctuation.test(before),pAfter=Punctuation.test(after);return cx.addDelimiter(StrikethroughDelim,pos,pos+2,!sAfter&&(!pAfter||sBefore||pBefore),!sBefore&&(!pBefore||sAfter||pAfter))},after:"Emphasis"}]};function parseRow(cx,line,startI=0,elts,offset=0){let count=0,first=true,cellStart=-1,cellEnd=-1,esc=false;let parseCell=()=>{elts.push(cx.elt("TableCell",offset+cellStart,offset+cellEnd,cx.parser.parseInline(line.slice(cellStart,cellEnd),offset+cellStart)))};for(let i=startI;i<line.length;i++){let next=line.charCodeAt(i);if(next==124&&!esc){if(!first||cellStart>-1)count++;first=false;if(elts){if(cellStart>-1)parseCell();elts.push(cx.elt("TableDelimiter",i+offset,i+offset+1))}cellStart=cellEnd=-1}else if(esc||next!=32&&next!=9){if(cellStart<0)cellStart=i;cellEnd=i+1}esc=!esc&&next==92}if(cellStart>-1){count++;if(elts)parseCell()}return count}function hasPipe(str,start){for(let i=start;i<str.length;i++){let next=str.charCodeAt(i);if(next==124)return true;if(next==92)i++}return false}const delimiterLine=/^\|?(\s*:?-+:?\s*\|)+(\s*:?-+:?\s*)?$/;class TableParser{constructor(){this.rows=null}nextLine(cx,line,leaf){if(this.rows==null){this.rows=false;let lineText;if((line.next==45||line.next==58||line.next==124)&&delimiterLine.test(lineText=line.text.slice(line.pos))){let firstRow=[],firstCount=parseRow(cx,leaf.content,0,firstRow,leaf.start);if(firstCount==parseRow(cx,lineText,line.pos))this.rows=[cx.elt("TableHeader",leaf.start,leaf.start+leaf.content.length,firstRow),cx.elt("TableDelimiter",cx.lineStart+line.pos,cx.lineStart+line.text.length)]}}else if(this.rows){let content=[];parseRow(cx,line.text,line.pos,content,cx.lineStart);this.rows.push(cx.elt("TableRow",cx.lineStart+line.pos,cx.lineStart+line.text.length,content))}return false}finish(cx,leaf){if(!this.rows)return false;cx.addLeafElement(leaf,cx.elt("Table",leaf.start,leaf.start+leaf.content.length,this.rows));return true}}const Table={defineNodes:[{name:"Table",block:true},{name:"TableHeader",style:{"TableHeader/...":tags.heading}},"TableRow",{name:"TableCell",style:tags.content},{name:"TableDelimiter",style:tags.processingInstruction}],parseBlock:[{name:"Table",leaf(_,leaf){return hasPipe(leaf.content,0)?new TableParser:null},endLeaf(cx,line,leaf){if(leaf.parsers.some(p=>p instanceof TableParser)||!hasPipe(line.text,line.basePos))return false;let next=cx.scanLine(cx.absoluteLineEnd+1).text;return delimiterLine.test(next)&&parseRow(cx,line.text,line.basePos)==parseRow(cx,next,line.basePos)},before:"SetextHeading"}]};class TaskParser{nextLine(){return false}finish(cx,leaf){cx.addLeafElement(leaf,cx.elt("Task",leaf.start,leaf.start+leaf.content.length,[cx.elt("TaskMarker",leaf.start,leaf.start+3),...cx.parser.parseInline(leaf.content.slice(3),leaf.start+3)]));return true}}const TaskList={defineNodes:[{name:"Task",block:true,style:tags.list},{name:"TaskMarker",style:tags.atom}],parseBlock:[{name:"TaskList",leaf(cx,leaf){return/^\[[ xX]\]/.test(leaf.content)&&cx.parentType().name=="ListItem"?new TaskParser:null},after:"SetextHeading"}]};const GFM=[Table,TaskList,Strikethrough];function parseSubSuper(ch,node,mark){return(cx,next,pos)=>{if(next!=ch||cx.char(pos+1)==ch)return-1;let elts=[cx.elt(mark,pos,pos+1)];for(let i=pos+1;i<cx.end;i++){let next=cx.char(i);if(next==ch)return cx.addElement(cx.elt(node,pos,i+1,elts.concat(cx.elt(mark,i,i+1))));if(next==92)elts.push(cx.elt("Escape",i,i+++2));if(space(next))break}return-1}}const Superscript={defineNodes:[{name:"Superscript",style:tags.special(tags.content)},{name:"SuperscriptMark",style:tags.processingInstruction}],parseInline:[{name:"Superscript",parse:parseSubSuper(94,"Superscript","SuperscriptMark")}]};const Subscript={defineNodes:[{name:"Subscript",style:tags.special(tags.content)},{name:"SubscriptMark",style:tags.processingInstruction}],parseInline:[{name:"Subscript",parse:parseSubSuper(126,"Subscript","SubscriptMark")}]};const Emoji={defineNodes:[{name:"Emoji",style:tags.character}],parseInline:[{name:"Emoji",parse(cx,next,pos){let match;if(next!=58||!(match=/^[a-zA-Z_0-9]+:/.exec(cx.slice(pos+1,cx.end))))return-1;return cx.addElement(cx.elt("Emoji",pos,pos+1+match[0].length))}}]};export{BlockContext,Element,Emoji,GFM,InlineContext,LeafBlock,Line,MarkdownParser,Strikethrough,Subscript,Superscript,Table,TaskList,parseCode,parser};
|