1 |
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2 |
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3 | import { parseFilters } from './parser/filter-parser'
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4 |
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5 | export function baseWarn (msg: string) {
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6 | console.error(`[Vue compiler]: ${msg}`)
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7 | }
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8 |
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9 | export function pluckModuleFunction<F: Function> (
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10 | modules: ?Array<Object>,
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11 | key: string
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12 | ): Array<F> {
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13 | return modules
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14 | ? modules.map(m => m[key]).filter(_ => _)
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15 | : []
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16 | }
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17 |
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18 | export function addProp (el: ASTElement, name: string, value: string) {
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19 | (el.props || (el.props = [])).push({ name, value })
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20 | }
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21 |
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22 | export function addAttr (el: ASTElement, name: string, value: string) {
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23 | (el.attrs || (el.attrs = [])).push({ name, value })
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24 | }
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25 |
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26 | export function addDirective (
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27 | el: ASTElement,
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28 | name: string,
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29 | rawName: string,
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30 | value: string,
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31 | arg: ?string,
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32 | modifiers: ?ASTModifiers
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33 | ) {
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34 | (el.directives || (el.directives = [])).push({ name, rawName, value, arg, modifiers })
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35 | }
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36 |
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37 | export function addHandler (
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38 | el: ASTElement,
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39 | name: string,
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40 | value: string,
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41 | modifiers: ?ASTModifiers,
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42 | important?: boolean,
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43 | warn?: Function
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44 | ) {
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45 |
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46 |
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47 | if (
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48 | process.env.NODE_ENV !== 'production' && warn &&
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49 | modifiers && modifiers.prevent && modifiers.passive
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50 | ) {
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51 | warn(
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52 | 'passive and prevent can\'t be used together. ' +
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53 | 'Passive handler can\'t prevent default event.'
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54 | )
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55 | }
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56 |
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57 | if (modifiers && modifiers.capture) {
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58 | delete modifiers.capture
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59 | name = '!' + name
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60 | }
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61 | if (modifiers && modifiers.once) {
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62 | delete modifiers.once
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63 | name = '~' + name
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64 | }
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65 |
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66 | if (modifiers && modifiers.passive) {
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67 | delete modifiers.passive
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68 | name = '&' + name
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69 | }
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70 | let events
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71 | if (modifiers && modifiers.native) {
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72 | delete modifiers.native
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73 | events = el.nativeEvents || (el.nativeEvents = {})
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74 | } else {
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75 | events = el.events || (el.events = {})
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76 | }
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77 | const newHandler = { value, modifiers }
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78 | const handlers = events[name]
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79 |
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80 | if (Array.isArray(handlers)) {
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81 | important ? handlers.unshift(newHandler) : handlers.push(newHandler)
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82 | } else if (handlers) {
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83 | events[name] = important ? [newHandler, handlers] : [handlers, newHandler]
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84 | } else {
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85 | events[name] = newHandler
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86 | }
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87 | }
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88 |
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89 | export function getBindingAttr (
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90 | el: ASTElement,
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91 | name: string,
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92 | getStatic?: boolean
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93 | ): ?string {
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94 | const dynamicValue =
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95 | getAndRemoveAttr(el, ':' + name) ||
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96 | getAndRemoveAttr(el, 'v-bind:' + name)
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97 | if (dynamicValue != null) {
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98 | return parseFilters(dynamicValue)
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99 | } else if (getStatic !== false) {
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100 | const staticValue = getAndRemoveAttr(el, name)
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101 | if (staticValue != null) {
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102 | return JSON.stringify(staticValue)
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103 | }
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104 | }
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105 | }
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106 |
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107 | export function getAndRemoveAttr (el: ASTElement, name: string): ?string {
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108 | let val
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109 | if ((val = el.attrsMap[name]) != null) {
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110 | const list = el.attrsList
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111 | for (let i = 0, l = list.length; i < l; i++) {
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112 | if (list[i].name === name) {
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113 | list.splice(i, 1)
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114 | break
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115 | }
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116 | }
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117 | }
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118 | return val
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119 | }
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