From 6796d0d1a56d94336f78e390a16f347e302efad8 Mon Sep 17 00:00:00 2001 From: Marshall Lochbaum Date: Mon, 26 Oct 2020 15:37:22 -0400 Subject: Show source code position in error output if available --- docs/repl.js | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) (limited to 'docs/repl.js') diff --git a/docs/repl.js b/docs/repl.js index 14927537..18a472aa 100644 --- a/docs/repl.js +++ b/docs/repl.js @@ -14,10 +14,15 @@ let repl = ()=>{ try { doc.rslt.textContent=fmt(bqn(s)); } catch(e) { - let s=e.src, w=e.message, i=-1; - if (s==="Compiler"&&w.sh[0]===2) [i,w]=w; - if (s==="!") w=w?fmt(w).replace(/^/gm,'! '):'! Error'; - else w=w.sh?w.join(""):w; + let r=e.src, w=e.message, i=-1; + if (r==='Compiler'&&w.sh[0]===2) [i,w]=w; + if (r==='!') w=w?fmt(w).replace(/^/gm,'! '):'! Error'; + else w=w.sh?w.join(''):w; + if (i>=0) { + let to=i=>Array.from(s).slice(0,i).join('').split('\n'); + let ll=to(i), l=ll.length-1, j=ll[l].length; + w = [w,'',to()[l],' '.repeat(j)+'^'].join('\n'); + } doc.rslt.classList.add('err'); doc.rslt.textContent=w; } -- cgit v1.2.3