@areslabs/alita-core/lib/tran/compPreHandle.js

alita-core

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = compPreHandle;

var _ErrorLogTraverse = _interopRequireDefault(require("../util/ErrorLogTraverse"));

var t = _interopRequireWildcard(require("@babel/types"));

function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function () { return cache; }; return cache; }

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

/**
 * Copyright (c) Areslabs.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 */

/**
 * 预处理
 * 1. <A name={"yk"}/> 修改为 <A name="yk"/>
 *
 * 2. wxNavigationOptions 设置到 小程序的页面配置上
 *
 * 3. 移除JSX里面的注释
 *
 * 4. <A x/> ==>  <A x="true"/>
 *
 * ...
 *
 * @param ast
 * @param info
 * @returns {*}
 */
function compPreHandle(ast, info) {
  (0, _ErrorLogTraverse.default)(ast, {
    exit: path => {
      // 移除注释
      if (path.node.leadingComments) {
        path.node.leadingComments = [];
      }

      if (path.node.trailingComments) {
        path.node.trailingComments = [];
      } // JSXExpressionContainer 只可能出现在3个地方： JSXAttribute，JSXElement， JSXFragment。 所以这里可以用else逻辑处理


      if (path.type === 'JSXExpressionContainer' && path.node.expression.type === 'StringLiteral') {
        const pp = path.parentPath;

        if (pp.type === 'JSXAttribute') {
          //  <A name={"yk"}/> 修改为 <A name="yk"/>
          path.replaceWith(path.node.expression);
        } else {
          //  <A>{"yk"}</A> 修改为 <A>yk</A>
          path.replaceWith(t.jsxText(path.node.expression.value));
        }

        return;
      }

      if (path.type === 'ClassProperty' && path.node.static && path.node.key.name === 'wxNavigationOptions') {
        const v = path.node.value;

        if (v.type === 'ObjectExpression') {
          const props = v.properties;

          for (let i = 0; i < props.length; i++) {
            const p = props[i];
            const k = p.key.name;
            const v = p.value.value;
            info.json[k] = v;
          }
        }

        return;
      } // 去掉注释 {/**/}


      if (path.type === 'JSXEmptyExpression') {
        path.parentPath.remove();
        return;
      }

      if (path.type === 'JSXAttribute' && !path.node.value) {
        path.node.value = t.stringLiteral('true');
      }
    }
  });
  return ast;
}