math-expression-evaluator
Version:
A flexible math expression evaluator
2 lines (1 loc) • 791 B
JavaScript
;Object.defineProperty(exports,"__esModule",{value:!0}),exports.toPostfix=function(e){for(var p,t,u,l=[],o=-1,r=-1,s=[{value:"(",type:4,precedence:0,show:"("}],a=1;a<e.length;a++)if(1===e[a].type||3===e[a].type||13===e[a].type)1===e[a].type&&(e[a].value=Number(e[a].value)),l.push(e[a]);else if(4===e[a].type)s.push(e[a]);else if(5===e[a].type)for(;4!==(null==(h=t=s.pop())?void 0:h.type);){var h;t&&l.push(t)}else if(11===e[a].type){for(;4!==(null==(v=t=s.pop())?void 0:v.type);){var v;t&&l.push(t)}s.push(t)}else{r=(p=e[a]).precedence,o=(u=s[s.length-1]).precedence;var n="Math.pow"==u.value&&"Math.pow"==p.value;if(r>o)s.push(p);else{for(;o>=r&&!n||n&&r<o;)t=s.pop(),u=s[s.length-1],t&&l.push(t),o=u.precedence,n="Math.pow"==p.value&&"Math.pow"==u.value;s.push(p)}}return l};