import { ExpressionParse } from "simple-expression-parsing"; const instance = new ExpressionParse({ expression: "a.b?c:d" }); instance.getAst(); { // "type": "ConditionalExpression", // "test": { // "type": "MemberExpression", // "computed": false, // "object": { // "type": "Identifier", // "start": 0, // "end": 1, // "name": "a" // }, // "property": { // "type": "Identifier", // "start": 2, // "end": 3, // "name": "b" // } // }, // "consequent": { // "type": "Identifier", // "start": 4, // "end": 5, // "name": "c" // }, // "alternate": { // "type": "Identifier", // "start": 6, // "end": 7, // "name": "d" // } // }

<script src="./dist/index.js"></script>

const { ExpressionParse } = window; const instance = new ExpressionParse({ expression: "a+b" }); instance.getAst();

const instance = new ExpressionParse({ expression: "a+b" }); console.log(instance.getAst()); // { // "type": "BinaryExpression", // "left": { // "type": "Identifier", // "start": 0, // "end": 1, // "name": "a" // }, // "operator": { // "type": "BinaryOperator", // "value": "+", // "start": 1, // "end": 2 // }, // "right": { // "type": "Identifier", // "start": 2, // "end": 3, // "name": "b" // } // }

const instance = new ExpressionParse({ expression: "a@@b" }); instance.addBinaryOps({ "@@": 6 }); console.log(instance.getAst()); // { // "type": "BinaryExpression", // "left": { // "type": "Identifier", // "start": 0, // "end": 1, // "name": "a" // }, // "operator": { // "type": "BinaryOperator", // "value": "@@", // "start": 1, // "end": 3 // }, // "right": { // "type": "Identifier", // "start": 3, // "end": 4, // "name": "b" // } // }

const instance = new ExpressionParse({ //The string you need to parse expression: "a+b", //Remove all default unary operators, replacing them with custom unary operators unaryOps: ["@@@@@"], //Remove all default binary operators, replacing them with custom binary operators //The value means the precedence of the operator. You can compare the priority of the default binary operator to determine your priority. binaryOps: { "#####": 5 }, //Remove all default literals, replacing them with custom literals literals: { this: "that" } }); instance //Add an extra binary operator, not the same as the initialization time, will not delete the default binary operator .addBinaryOps({ "##": 5 }) //Add an extra unary operator .addUnaryOps(["@@"]) //Add an extra unary literals .addLiterals({ hard: "hard" }) //Remove the specified binary operators .removeBinaryOps(["##", "+"]) //Remove the specified unary operators .removeUnaryOps(["@@"]) //Remove the specified literals .removeLiterals(["hard"]) .getAst();

//default unary operators const unaryOps = { "!": true, "-": true, "+": true }; //default binary operators const binaryOps = { "||": 1, "&&": 2, "|": 3, "^": 4, "&": 5, "==": 6, "!=": 6, "===": 6, "!==": 6, "<": 7, ">": 7, "<=": 7, ">=": 7, "<<": 8, ">>": 8, "+": 9, "-": 9, "*": 10, "/": 10, "%": 10 }; //default literals const literals = { undefined: undefined, null: null, false: false, true: true };