From fc87c009806dcc98867f6b58efe29b042aa01dee Mon Sep 17 00:00:00 2001 From: littleblack111 Date: Mon, 18 May 2026 23:10:59 +0800 Subject: node: update --- .../math-expression-evaluator/src/postfix.js | 50 ---------------------- 1 file changed, 50 deletions(-) delete mode 100644 node_modules/math-expression-evaluator/src/postfix.js (limited to 'node_modules/math-expression-evaluator/src/postfix.js') diff --git a/node_modules/math-expression-evaluator/src/postfix.js b/node_modules/math-expression-evaluator/src/postfix.js deleted file mode 100644 index 14d1ee0b..00000000 --- a/node_modules/math-expression-evaluator/src/postfix.js +++ /dev/null @@ -1,50 +0,0 @@ - -var Mexp = require('./lexer.js'); - -Mexp.prototype.toPostfix = function () { - 'use strict'; - var post = [], elem, popped, prep, pre, ele; - var stack = [{ value: "(", type: 4, pre: 0 }]; - var arr = this.value; - for (var i = 1; i < arr.length; i++) { - if (arr[i].type === 1 || arr[i].type === 3 || arr[i].type === 13) { //if token is number,constant,or n(which is also a special constant in our case) - if (arr[i].type === 1) - arr[i].value = Number(arr[i].value); - post.push(arr[i]); - } - else if (arr[i].type === 4) { - stack.push(arr[i]); - } - else if (arr[i].type === 5) { - while ((popped = stack.pop()).type !== 4) { - post.push(popped); - } - } - else if (arr[i].type === 11) { - while ((popped = stack.pop()).type !== 4) { - post.push(popped); - } - stack.push(popped); - } - else { - elem = arr[i]; - pre = elem.pre; - ele = stack[stack.length - 1]; - prep = ele.pre; - var flag = ele.value == 'Math.pow' && elem.value == 'Math.pow'; - if (pre > prep) stack.push(elem); - else { - while (prep >= pre && !flag || flag && pre < prep) { - popped = stack.pop(); - ele = stack[stack.length - 1]; - post.push(popped); - prep = ele.pre; - flag = elem.value == 'Math.pow' && ele.value == 'Math.pow'; - } - stack.push(elem); - } - } - } - return new Mexp(post); -}; -module.exports = Mexp; \ No newline at end of file -- cgit v1.2.3