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render unclosed display block

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Waylon Flinn 2016-04-22 11:59:42 -05:00
parent 2a45cb8b71
commit 152877dc41
1 changed files with 23 additions and 20 deletions
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43
index.js
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@ -14,15 +14,15 @@ var katex = require('katex');
//return if we have valid delimiter, '$', is in the position. //return if we have valid delimiter, '$', is in the position.
function isValidDelim(state) { function isValidDelim(state) {
var lastChar, secondLastChar, nextChar, pos = state.pos; var lastChar, secondLastChar, nextChar, pos = state.pos;
if(state.src[pos]!=='$'){ if(state.src[pos]!=='$'){
return false; //the character $ must be in its position. return false; //the character $ must be in its position.
} }
secondLastChar= pos > 1 ? state.src[pos-2] : ' ' secondLastChar= pos > 1 ? state.src[pos-2] : ' '
lastChar = pos > 0 ? state.src[pos-1] : ' ' lastChar = pos > 0 ? state.src[pos-1] : ' '
nextChar = pos + 1 < state.src.length ? state.src[pos+1] : ' ' nextChar = pos + 1 < state.src.length ? state.src[pos+1] : ' '
if( if(
lastChar === '\\' //$ we found was escaped. lastChar === '\\' //$ we found was escaped.
|| (lastChar === '$' && secondLastChar !== '\\') // $ we found was after $ but not escaped. || (lastChar === '$' && secondLastChar !== '\\') // $ we found was after $ but not escaped.
@ -31,14 +31,14 @@ function isValidDelim(state) {
{ {
return false; return false;
} }
return true; return true;
} }
function math_inline(state, silent){ function math_inline(state, silent){
var start, found = false, token; var start, found = false, token;
if(silent) { return false; } if(silent) { return false; }
start = state.pos; start = state.pos;
if(state.src[start] !== '$'){ return false; } if(state.src[start] !== '$'){ return false; }
if(!isValidDelim(state)){ if(!isValidDelim(state)){
@ -47,7 +47,7 @@ function math_inline(state, silent){
return true; return true;
} }
state.pos+=1; state.pos+=1;
while(state.pos < state.posMax){ while(state.pos < state.posMax){
if(isValidDelim(state)){ if(isValidDelim(state)){
found = true; found = true;
@ -60,12 +60,12 @@ function math_inline(state, silent){
state.pos = start; state.pos = start;
return false; return false;
} }
//found the closing delimiter and state.pos is pointing it //found the closing delimiter and state.pos is pointing it
token = state.push('math_inline','math',0); token = state.push('math_inline','math',0);
token.content = state.src.slice(start+1,state.pos).trim(); token.content = state.src.slice(start+1,state.pos).trim();
token.markup = '$'; token.markup = '$';
state.pos += 1; state.pos += 1;
return true; return true;
} }
@ -74,41 +74,44 @@ function math_block(state, start, end, silent){
var firstLine, lastLine, next, lastPos, found = false, token, var firstLine, lastLine, next, lastPos, found = false, token,
pos = state.bMarks[start] + state.tShift[start], pos = state.bMarks[start] + state.tShift[start],
max = state.eMarks[start] max = state.eMarks[start]
if(pos + 2 > max){ return false; } if(pos + 2 > max){ return false; }
if(state.src.slice(pos,pos+2)!=='$$'){ return false; } if(state.src.slice(pos,pos+2)!=='$$'){ return false; }
pos += 2; pos += 2;
firstLine = state.src.slice(pos,max); firstLine = state.src.slice(pos,max);
if(silent){ return true; } if(silent){ return true; }
if(firstLine.trim().slice(-2)==='$$'){ if(firstLine.trim().slice(-2)==='$$'){
// Single line expression // Single line expression
firstLine = firstLine.trim().slice(0, -2); firstLine = firstLine.trim().slice(0, -2);
found = true; found = true;
} }
for(next = start; next < end; ){ for(next = start; !found; ){
if(found){ break; }
next++; next++;
if(next >= end){ break; }
pos = state.bMarks[next]+state.tShift[next]; pos = state.bMarks[next]+state.tShift[next];
max = state.eMarks[next]; max = state.eMarks[next];
if(pos < max && state.tShift[next] < state.blkIndent){ if(pos < max && state.tShift[next] < state.blkIndent){
// non-empty line with negative indent should stop the list:
break; break;
} }
if(state.src.slice(pos,max).trim().slice(-2)==='$$'){ if(state.src.slice(pos,max).trim().slice(-2)==='$$'){
lastPos = state.src.slice(0,max).lastIndexOf('$$'); lastPos = state.src.slice(0,max).lastIndexOf('$$');
lastLine = state.src.slice(pos,lastPos); lastLine = state.src.slice(pos,lastPos);
found = true; found = true;
} }
} }
if(!found){
return false;
}
state.line = next + 1; state.line = next + 1;
token = state.push('math_block', 'math', 0); token = state.push('math_block', 'math', 0);
token.block = true; token.block = true;
token.content = (firstLine && firstLine.trim() ? firstLine + '\n' : '') token.content = (firstLine && firstLine.trim() ? firstLine + '\n' : '')