120 lines
3.0 KiB
JavaScript
120 lines
3.0 KiB
JavaScript
const {
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tags
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} = require('@dcloudio/uni-cli-shared')
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const parser = require('@babel/parser')
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const t = require('@babel/types')
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const simplePathRE = /^[A-Za-z_$][\w$]*(?:\.[A-Za-z_$][\w$]*|\['[^']*?']|\["[^"]*?"]|\[\d+]|\[[A-Za-z_$][\w$]*])*$/
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function isFunction (expr) {
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try {
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const body = parser.parse(`(${expr})`).program.body[0]
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const expression = body.expression
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return t.isFunctionDeclaration(body) || t.isArrowFunctionExpression(expression) || t.isFunctionExpression(
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expression)
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} catch (error) {}
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}
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function processEvent (expr, filterModules) {
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const isMethodPath = simplePathRE.test(expr)
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if (isMethodPath || isFunction(expr)) {
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if (filterModules.find(name => expr.indexOf(name + '.') === 0)) {
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return `
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$event = $handleWxsEvent($event);
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(${expr})($event, $getComponentDescriptor())
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`
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} else {
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expr = `(${expr})(...arguments)`
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}
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}
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return `
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arguments[0] = $event = $handleEvent($event);
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${expr}
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`
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}
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function hasOwn (obj, key) {
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return hasOwnProperty.call(obj, key)
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}
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const deprecated = {
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events: {
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tap: 'click',
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longtap: 'longpress'
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}
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}
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function addTag (tag) {
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if (!process.UNI_TAGS) {
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process.UNI_TAGS = new Set()
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}
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process.UNI_TAGS.add(tag)
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}
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module.exports = {
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h5: true,
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modules: [require('../format-text'), {
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preTransformNode (el, options) {
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if (el.tag.indexOf('v-uni-') === 0) {
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addTag(el.tag.replace('v-uni-', ''))
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} else if (hasOwn(tags, el.tag)) {
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addTag(el.tag)
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el.tag = 'v-uni-' + el.tag
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}
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},
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postTransformNode (el, {
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warn,
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filterModules
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}) {
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if (el.tag === 'block') {
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el.tag = 'template'
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const vForKey = el.key
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if (vForKey) {
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delete el.key
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el.children.forEach((childEl, index) => {
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const childVForKey = childEl.key
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if (childVForKey) {
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childEl.key = `${childVForKey}+'_'+${vForKey}+'_${index}'`
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} else {
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childEl.key = `${vForKey}+'_${index}'`
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}
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})
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}
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}
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if (el.events || el.nativeEvents) {
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filterModules = filterModules || []
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const {
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events: eventsMap
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} = deprecated
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// const warnLogs = new Set()
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normalizeEvent(el.events, eventsMap, filterModules)
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normalizeEvent(el.nativeEvents, eventsMap, filterModules)
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}
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}
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}]
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}
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function normalizeEvent (events, eventsMap, filterModules) {
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if (!events) {
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return
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}
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Object.keys(events).forEach(name => {
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// 过时事件类型转换
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if (eventsMap[name]) {
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events[eventsMap[name]] = events[name]
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delete events[name]
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// warnLogs.add(`警告：事件${name}已过时，推荐使用${eventsMap[name]}代替`)
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name = eventsMap[name]
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}
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const handlers = events[name]
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if (Array.isArray(handlers)) {
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handlers.forEach(handler => {
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handler.value = processEvent(handler.value, filterModules)
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})
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} else {
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handlers.value = processEvent(handlers.value, filterModules)
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}
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})
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}
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