foldmaker-tiny

This is a reduced version of Foldmaker that only exposes Foldmaker and tokenize functions, and f class. Great for figuring out how Foldmaker works, since core utilities are tokenize function and parse method. The aim is to see how tiny Foldmaker's algorithm can be. FoldmakerObject class (f in this case), only has parse, _replace, add methods. These methods are oftenly adequate for tree generation.

Differences from the main version:

• There is no replace, traverse methods and visitor helper.
• Is not easily pluggable like the main version.
• parse method does not set '1' for unset token types.
• parse method does not have debug callback as the last argument.
• parse method does not have props key in its callback argument, as soon as you won't do something like source mapping this is not important though.

Most Foldmaker examples that uses no more than Foldmaker, tokenize, visitor and parse method should also be able to work with this version. There is only the following slight change:

While parse method works like this in Foldmaker:

parse([visitor(regex1, fn1), visitor(regex2, fn2)])
parse(regex1,fn1)

In this version, it works like this:

parse([regex1, fn1], [regex2, fn2])
parse([regex1, fn1])

When minified, whole code looks like this:

class f{constructor(e){let t=e;this.types=t?e.map(e=>e.type).join(""):"",this.values=t?e
.map(e=>e.value):[]}parse(...e){(e=e.map(([e,t])=>[t,e])).push([()=>void 0,/[\s\n\S]/]);
let t=this;do{t=t._replace(t,e)}while(!0===t.m);return t}add(e,t){this.types+=e,this
.values=this.values.concat(t)}_replace({types:e,values:t},a){let l=new f;return tokenize
(e,a,({type:e,map:a,index:s})=>{let i=a[0].length,n={raw:t.slice(s,i+s),index:s,count:i,
map:a},p=e(n);p?(l.add(p[0],[p[1]]),l.m=!0):l.add(n.map[0],n.raw)}),l}}tokenize=(
(e,t,a)=>{let l=0,s=[];for(t.push(["0",/[\s\n\S]/]);e;)t.some(([t,i])=>{let n=i.exec(e);
if(n&&n.index<1){let i=n[0],p=a?a({type:t,value:i,map:n,index:l}):{type:t,value:i};
return p&&s.push(p),e=e.slice(i.length),l+=i.length,!0}});return s});let Foldmaker=e=>new f(e);