@syzlm/evaluator/lib/esm/evaluator.min.js

javascript模版计算引擎

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l,u=r.replace(/(\b([a-zA-Z]+)\b)/g,(function(r,t){if(o.includes(t))return t.trim();var n=e[t.trim()];if(null==n||""===n)throw new Error("data is error: '".concat(t,"' value not find"));return e[t.trim()]})),i="operator",c=["+","-","*","/","%"];for(s("计算模版转化:",u);null!==(l=n.exec(u));){var f=a(l,5),p=f[1],g=f[2],h=f[3],d=f[4];if(p){var m=("-"===i?i:"")+p+(g||"");t.push({type:"NUMBER",value:m}),i="number"}else h?(t.push({type:"FUNCTION",value:h.toLowerCase()}),i="func"):d&&("("===d||")"===d||","===d?(t.push({type:d}),i=d):c.includes(d)&&"operator"!==i?(t.push({type:d}),i="operator"):i=d)}return t}v("请输入计算模板以及参数")}(r,e);if(null!=t&&t.length){s("tokens:",t);var n=function(r){var e=0,t=function(){var a=arguments.length>0&&void 0!==arguments[0]?arguments[0]:0,o=n();r:for(;e<r.length;){var l=r[e];if(")"===l.type||U[l.type]<=a)break;if(","===l.type)break r;var u=l.type;e++,o={type:"BINARY",operator:u,left:o,right:t(U[u])}}return o},n=function(){var n=r[e++];if("NUMBER"===n.type)return{type:"NUMBER",value:n.value};if("FUNCTION"===n.type){var a=[],o=[];if("("!==r[e++].type)throw new Error("Expected (");for(;")"!==r[e].type;)","===r[e].type?(e++,o.push(t())):a.push(t());return e++,{type:"FUNCTION",numArgs:o,name:n.value,args:a}}if("("===n.type){var l=t();if(")"!==r[e++].type)throw new Error("Expected )");return l}throw new Error("Unexpected token")};return t()}(t);return s("ast:",n),x(n)}return""}catch(r){return v("error:",r),"Error: ".concat((null==r?void 0:r.message)||"")}};export{I as default,S as evaluatorAdd,E as evaluatorDivide,A as evaluatorMultiply,j as evaluatorSubtract,I as renderTemplate,i as setOptions,P as toFixeds};
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