1 |
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2 |
|
3 | import he from 'he'
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4 | import { parseHTML } from './html-parser'
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5 | import { parseText } from './text-parser'
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6 | import { parseFilters } from './filter-parser'
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7 | import { genAssignmentCode } from '../directives/model'
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8 | import { extend, cached, no, camelize, hyphenate } from 'shared/util'
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9 | import { isIE, isEdge, isServerRendering } from 'core/util/env'
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10 |
|
11 | import {
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12 | addProp,
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13 | addAttr,
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14 | baseWarn,
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15 | addHandler,
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16 | addDirective,
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17 | getBindingAttr,
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18 | getAndRemoveAttr,
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19 | getRawBindingAttr,
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20 | pluckModuleFunction,
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21 | getAndRemoveAttrByRegex
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22 | } from '../helpers'
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23 |
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24 | export const onRE = /^@|^v-on:/
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25 | export const dirRE = process.env.VBIND_PROP_SHORTHAND
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26 | ? /^v-|^@|^:|^\./
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27 | : /^v-|^@|^:/
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28 | export const forAliasRE = /([\s\S]*?)\s+(?:in|of)\s+([\s\S]*)/
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29 | export const forIteratorRE = /,([^,\}\]]*)(?:,([^,\}\]]*))?$/
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30 | const stripParensRE = /^\(|\)$/g
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31 | const dynamicArgRE = /^\[.*\]$/
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32 |
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33 | const argRE = /:(.*)$/
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34 | export const bindRE = /^:|^\.|^v-bind:/
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35 | const propBindRE = /^\./
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36 | const modifierRE = /\.[^.]+/g
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37 |
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38 | const slotRE = /^v-slot(:|$)|^#/
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39 |
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40 | const lineBreakRE = /[\r\n]/
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41 | const whitespaceRE = /\s+/g
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42 |
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43 | const invalidAttributeRE = /[\s"'<>\/=]/
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44 |
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45 | const decodeHTMLCached = cached(he.decode)
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46 |
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47 |
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48 | export let warn: any
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49 | let delimiters
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50 | let transforms
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51 | let preTransforms
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52 | let postTransforms
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53 | let platformIsPreTag
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54 | let platformMustUseProp
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55 | let platformGetTagNamespace
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56 | let maybeComponent
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57 |
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58 | export function createASTElement (
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59 | tag: string,
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60 | attrs: Array<ASTAttr>,
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61 | parent: ASTElement | void
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62 | ): ASTElement {
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63 | return {
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64 | type: 1,
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65 | tag,
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66 | attrsList: attrs,
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67 | attrsMap: makeAttrsMap(attrs),
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68 | rawAttrsMap: {},
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69 | parent,
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70 | children: []
|
71 | }
|
72 | }
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73 |
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74 |
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75 |
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76 |
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77 | export function parse (
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78 | template: string,
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79 | options: CompilerOptions
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80 | ): ASTElement | void {
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81 | warn = options.warn || baseWarn
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82 |
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83 | platformIsPreTag = options.isPreTag || no
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84 | platformMustUseProp = options.mustUseProp || no
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85 | platformGetTagNamespace = options.getTagNamespace || no
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86 | const isReservedTag = options.isReservedTag || no
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87 | maybeComponent = (el: ASTElement) => !!el.component || !isReservedTag(el.tag)
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88 |
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89 | transforms = pluckModuleFunction(options.modules, 'transformNode')
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90 | preTransforms = pluckModuleFunction(options.modules, 'preTransformNode')
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91 | postTransforms = pluckModuleFunction(options.modules, 'postTransformNode')
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92 |
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93 | delimiters = options.delimiters
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94 |
|
95 | const stack = []
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96 | const preserveWhitespace = options.preserveWhitespace !== false
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97 | const whitespaceOption = options.whitespace
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98 | let root
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99 | let currentParent
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100 | let inVPre = false
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101 | let inPre = false
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102 | let warned = false
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103 |
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104 | function warnOnce (msg, range) {
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105 | if (!warned) {
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106 | warned = true
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107 | warn(msg, range)
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108 | }
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109 | }
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110 |
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111 | function closeElement (element) {
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112 | trimEndingWhitespace(element)
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113 | if (!inVPre && !element.processed) {
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114 | element = processElement(element, options)
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115 | }
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116 |
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117 | if (!stack.length && element !== root) {
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118 |
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119 | if (root.if && (element.elseif || element.else)) {
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120 | if (process.env.NODE_ENV !== 'production') {
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121 | checkRootConstraints(element)
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122 | }
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123 | addIfCondition(root, {
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124 | exp: element.elseif,
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125 | block: element
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126 | })
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127 | } else if (process.env.NODE_ENV !== 'production') {
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128 | warnOnce(
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129 | `Component template should contain exactly one root element. ` +
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130 | `If you are using v-if on multiple elements, ` +
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131 | `use v-else-if to chain them instead.`,
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132 | { start: element.start }
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133 | )
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134 | }
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135 | }
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136 | if (currentParent && !element.forbidden) {
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137 | if (element.elseif || element.else) {
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138 | processIfConditions(element, currentParent)
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139 | } else {
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140 | if (element.slotScope) {
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141 |
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142 |
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143 |
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144 | const name = element.slotTarget || '"default"'
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145 | ;(currentParent.scopedSlots || (currentParent.scopedSlots = {}))[name] = element
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146 | }
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147 | currentParent.children.push(element)
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148 | element.parent = currentParent
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149 | }
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150 | }
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151 |
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152 |
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153 |
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154 | element.children = element.children.filter(c => !(c: any).slotScope)
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155 |
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156 | trimEndingWhitespace(element)
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157 |
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158 |
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159 | if (element.pre) {
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160 | inVPre = false
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161 | }
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162 | if (platformIsPreTag(element.tag)) {
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163 | inPre = false
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164 | }
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165 |
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166 | for (let i = 0; i < postTransforms.length; i++) {
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167 | postTransforms[i](element, options)
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168 | }
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169 | }
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170 |
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171 | function trimEndingWhitespace (el) {
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172 |
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173 | if (!inPre) {
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174 | let lastNode
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175 | while (
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176 | (lastNode = el.children[el.children.length - 1]) &&
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177 | lastNode.type === 3 &&
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178 | lastNode.text === ' '
|
179 | ) {
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180 | el.children.pop()
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181 | }
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182 | }
|
183 | }
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184 |
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185 | function checkRootConstraints (el) {
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186 | if (el.tag === 'slot' || el.tag === 'template') {
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187 | warnOnce(
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188 | `Cannot use <${el.tag}> as component root element because it may ` +
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189 | 'contain multiple nodes.',
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190 | { start: el.start }
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191 | )
|
192 | }
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193 | if (el.attrsMap.hasOwnProperty('v-for')) {
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194 | warnOnce(
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195 | 'Cannot use v-for on stateful component root element because ' +
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196 | 'it renders multiple elements.',
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197 | el.rawAttrsMap['v-for']
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198 | )
|
199 | }
|
200 | }
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201 |
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202 | parseHTML(template, {
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203 | warn,
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204 | expectHTML: options.expectHTML,
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205 | isUnaryTag: options.isUnaryTag,
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206 | canBeLeftOpenTag: options.canBeLeftOpenTag,
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207 | shouldDecodeNewlines: options.shouldDecodeNewlines,
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208 | shouldDecodeNewlinesForHref: options.shouldDecodeNewlinesForHref,
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209 | shouldKeepComment: options.comments,
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210 | outputSourceRange: options.outputSourceRange,
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211 | start (tag, attrs, unary, start) {
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212 |
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213 |
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214 | const ns = (currentParent && currentParent.ns) || platformGetTagNamespace(tag)
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215 |
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216 |
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217 |
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218 | if (isIE && ns === 'svg') {
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219 | attrs = guardIESVGBug(attrs)
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220 | }
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221 |
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222 | let element: ASTElement = createASTElement(tag, attrs, currentParent)
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223 | if (ns) {
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224 | element.ns = ns
|
225 | }
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226 |
|
227 | if (process.env.NODE_ENV !== 'production') {
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228 | if (options.outputSourceRange) {
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229 | element.start = start
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230 | element.rawAttrsMap = element.attrsList.reduce((cumulated, attr) => {
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231 | cumulated[attr.name] = attr
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232 | return cumulated
|
233 | }, {})
|
234 | }
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235 | attrs.forEach(attr => {
|
236 | if (invalidAttributeRE.test(attr.name)) {
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237 | warn(
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238 | `Invalid dynamic argument expression: attribute names cannot contain ` +
|
239 | `spaces, quotes, <, >, / or =.`,
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240 | {
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241 | start: attr.start + attr.name.indexOf(`[`),
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242 | end: attr.start + attr.name.length
|
243 | }
|
244 | )
|
245 | }
|
246 | })
|
247 | }
|
248 |
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249 | if (isForbiddenTag(element) && !isServerRendering()) {
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250 | element.forbidden = true
|
251 | process.env.NODE_ENV !== 'production' && warn(
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252 | 'Templates should only be responsible for mapping the state to the ' +
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253 | 'UI. Avoid placing tags with side-effects in your templates, such as ' +
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254 | `<${tag}>` + ', as they will not be parsed.',
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255 | { start: element.start }
|
256 | )
|
257 | }
|
258 |
|
259 |
|
260 | for (let i = 0; i < preTransforms.length; i++) {
|
261 | element = preTransforms[i](element, options) || element
|
262 | }
|
263 |
|
264 | if (!inVPre) {
|
265 | processPre(element)
|
266 | if (element.pre) {
|
267 | inVPre = true
|
268 | }
|
269 | }
|
270 | if (platformIsPreTag(element.tag)) {
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271 | inPre = true
|
272 | }
|
273 | if (inVPre) {
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274 | processRawAttrs(element)
|
275 | } else if (!element.processed) {
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276 |
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277 | processFor(element)
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278 | processIf(element)
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279 | processOnce(element)
|
280 | }
|
281 |
|
282 | if (!root) {
|
283 | root = element
|
284 | if (process.env.NODE_ENV !== 'production') {
|
285 | checkRootConstraints(root)
|
286 | }
|
287 | }
|
288 |
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289 | if (!unary) {
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290 | currentParent = element
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291 | stack.push(element)
|
292 | } else {
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293 | closeElement(element)
|
294 | }
|
295 | },
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296 |
|
297 | end (tag, start, end) {
|
298 | const element = stack[stack.length - 1]
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299 |
|
300 | stack.length -= 1
|
301 | currentParent = stack[stack.length - 1]
|
302 | if (process.env.NODE_ENV !== 'production' && options.outputSourceRange) {
|
303 | element.end = end
|
304 | }
|
305 | closeElement(element)
|
306 | },
|
307 |
|
308 | chars (text: string, start: number, end: number) {
|
309 | if (!currentParent) {
|
310 | if (process.env.NODE_ENV !== 'production') {
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311 | if (text === template) {
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312 | warnOnce(
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313 | 'Component template requires a root element, rather than just text.',
|
314 | { start }
|
315 | )
|
316 | } else if ((text = text.trim())) {
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317 | warnOnce(
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318 | `text "${text}" outside root element will be ignored.`,
|
319 | { start }
|
320 | )
|
321 | }
|
322 | }
|
323 | return
|
324 | }
|
325 |
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326 |
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327 | if (isIE &&
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328 | currentParent.tag === 'textarea' &&
|
329 | currentParent.attrsMap.placeholder === text
|
330 | ) {
|
331 | return
|
332 | }
|
333 | const children = currentParent.children
|
334 | if (inPre || text.trim()) {
|
335 | text = isTextTag(currentParent) ? text : decodeHTMLCached(text)
|
336 | } else if (!children.length) {
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337 |
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338 | text = ''
|
339 | } else if (whitespaceOption) {
|
340 | if (whitespaceOption === 'condense') {
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341 |
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342 |
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343 | text = lineBreakRE.test(text) ? '' : ' '
|
344 | } else {
|
345 | text = ' '
|
346 | }
|
347 | } else {
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348 | text = preserveWhitespace ? ' ' : ''
|
349 | }
|
350 | if (text) {
|
351 | if (whitespaceOption === 'condense') {
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352 |
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353 | text = text.replace(whitespaceRE, ' ')
|
354 | }
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355 | let res
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356 | let child: ?ASTNode
|
357 | if (!inVPre && text !== ' ' && (res = parseText(text, delimiters))) {
|
358 | child = {
|
359 | type: 2,
|
360 | expression: res.expression,
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361 | tokens: res.tokens,
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362 | text
|
363 | }
|
364 | } else if (text !== ' ' || !children.length || children[children.length - 1].text !== ' ') {
|
365 | child = {
|
366 | type: 3,
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367 | text
|
368 | }
|
369 | }
|
370 | if (child) {
|
371 | if (process.env.NODE_ENV !== 'production' && options.outputSourceRange) {
|
372 | child.start = start
|
373 | child.end = end
|
374 | }
|
375 | children.push(child)
|
376 | }
|
377 | }
|
378 | },
|
379 | comment (text: string, start, end) {
|
380 | const child: ASTText = {
|
381 | type: 3,
|
382 | text,
|
383 | isComment: true
|
384 | }
|
385 | if (process.env.NODE_ENV !== 'production' && options.outputSourceRange) {
|
386 | child.start = start
|
387 | child.end = end
|
388 | }
|
389 | currentParent.children.push(child)
|
390 | }
|
391 | })
|
392 | return root
|
393 | }
|
394 |
|
395 | function processPre (el) {
|
396 | if (getAndRemoveAttr(el, 'v-pre') != null) {
|
397 | el.pre = true
|
398 | }
|
399 | }
|
400 |
|
401 | function processRawAttrs (el) {
|
402 | const list = el.attrsList
|
403 | const len = list.length
|
404 | if (len) {
|
405 | const attrs: Array<ASTAttr> = el.attrs = new Array(len)
|
406 | for (let i = 0; i < len; i++) {
|
407 | attrs[i] = {
|
408 | name: list[i].name,
|
409 | value: JSON.stringify(list[i].value)
|
410 | }
|
411 | if (list[i].start != null) {
|
412 | attrs[i].start = list[i].start
|
413 | attrs[i].end = list[i].end
|
414 | }
|
415 | }
|
416 | } else if (!el.pre) {
|
417 |
|
418 | el.plain = true
|
419 | }
|
420 | }
|
421 |
|
422 | export function processElement (
|
423 | element: ASTElement,
|
424 | options: CompilerOptions
|
425 | ) {
|
426 | processKey(element)
|
427 |
|
428 |
|
429 |
|
430 | element.plain = (
|
431 | !element.key &&
|
432 | !element.scopedSlots &&
|
433 | !element.attrsList.length
|
434 | )
|
435 |
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436 | processRef(element)
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437 | processSlotContent(element)
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438 | processSlotOutlet(element)
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439 | processComponent(element)
|
440 | for (let i = 0; i < transforms.length; i++) {
|
441 | element = transforms[i](element, options) || element
|
442 | }
|
443 | processAttrs(element)
|
444 | return element
|
445 | }
|
446 |
|
447 | function processKey (el) {
|
448 | const exp = getBindingAttr(el, 'key')
|
449 | if (exp) {
|
450 | if (process.env.NODE_ENV !== 'production') {
|
451 | if (el.tag === 'template') {
|
452 | warn(
|
453 | `<template> cannot be keyed. Place the key on real elements instead.`,
|
454 | getRawBindingAttr(el, 'key')
|
455 | )
|
456 | }
|
457 | if (el.for) {
|
458 | const iterator = el.iterator2 || el.iterator1
|
459 | const parent = el.parent
|
460 | if (iterator && iterator === exp && parent && parent.tag === 'transition-group') {
|
461 | warn(
|
462 | `Do not use v-for index as key on <transition-group> children, ` +
|
463 | `this is the same as not using keys.`,
|
464 | getRawBindingAttr(el, 'key'),
|
465 | true
|
466 | )
|
467 | }
|
468 | }
|
469 | }
|
470 | el.key = exp
|
471 | }
|
472 | }
|
473 |
|
474 | function processRef (el) {
|
475 | const ref = getBindingAttr(el, 'ref')
|
476 | if (ref) {
|
477 | el.ref = ref
|
478 | el.refInFor = checkInFor(el)
|
479 | }
|
480 | }
|
481 |
|
482 | export function processFor (el: ASTElement) {
|
483 | let exp
|
484 | if ((exp = getAndRemoveAttr(el, 'v-for'))) {
|
485 | const res = parseFor(exp)
|
486 | if (res) {
|
487 | extend(el, res)
|
488 | } else if (process.env.NODE_ENV !== 'production') {
|
489 | warn(
|
490 | `Invalid v-for expression: ${exp}`,
|
491 | el.rawAttrsMap['v-for']
|
492 | )
|
493 | }
|
494 | }
|
495 | }
|
496 |
|
497 | type ForParseResult = {
|
498 | for: string;
|
499 | alias: string;
|
500 | iterator1?: string;
|
501 | iterator2?: string;
|
502 | };
|
503 |
|
504 | export function parseFor (exp: string): ?ForParseResult {
|
505 | const inMatch = exp.match(forAliasRE)
|
506 | if (!inMatch) return
|
507 | const res = {}
|
508 | res.for = inMatch[2].trim()
|
509 | const alias = inMatch[1].trim().replace(stripParensRE, '')
|
510 | const iteratorMatch = alias.match(forIteratorRE)
|
511 | if (iteratorMatch) {
|
512 | res.alias = alias.replace(forIteratorRE, '').trim()
|
513 | res.iterator1 = iteratorMatch[1].trim()
|
514 | if (iteratorMatch[2]) {
|
515 | res.iterator2 = iteratorMatch[2].trim()
|
516 | }
|
517 | } else {
|
518 | res.alias = alias
|
519 | }
|
520 | return res
|
521 | }
|
522 |
|
523 | function processIf (el) {
|
524 | const exp = getAndRemoveAttr(el, 'v-if')
|
525 | if (exp) {
|
526 | el.if = exp
|
527 | addIfCondition(el, {
|
528 | exp: exp,
|
529 | block: el
|
530 | })
|
531 | } else {
|
532 | if (getAndRemoveAttr(el, 'v-else') != null) {
|
533 | el.else = true
|
534 | }
|
535 | const elseif = getAndRemoveAttr(el, 'v-else-if')
|
536 | if (elseif) {
|
537 | el.elseif = elseif
|
538 | }
|
539 | }
|
540 | }
|
541 |
|
542 | function processIfConditions (el, parent) {
|
543 | const prev = findPrevElement(parent.children)
|
544 | if (prev && prev.if) {
|
545 | addIfCondition(prev, {
|
546 | exp: el.elseif,
|
547 | block: el
|
548 | })
|
549 | } else if (process.env.NODE_ENV !== 'production') {
|
550 | warn(
|
551 | `v-${el.elseif ? ('else-if="' + el.elseif + '"') : 'else'} ` +
|
552 | `used on element <${el.tag}> without corresponding v-if.`,
|
553 | el.rawAttrsMap[el.elseif ? 'v-else-if' : 'v-else']
|
554 | )
|
555 | }
|
556 | }
|
557 |
|
558 | function findPrevElement (children: Array<any>): ASTElement | void {
|
559 | let i = children.length
|
560 | while (i--) {
|
561 | if (children[i].type === 1) {
|
562 | return children[i]
|
563 | } else {
|
564 | if (process.env.NODE_ENV !== 'production' && children[i].text !== ' ') {
|
565 | warn(
|
566 | `text "${children[i].text.trim()}" between v-if and v-else(-if) ` +
|
567 | `will be ignored.`,
|
568 | children[i]
|
569 | )
|
570 | }
|
571 | children.pop()
|
572 | }
|
573 | }
|
574 | }
|
575 |
|
576 | export function addIfCondition (el: ASTElement, condition: ASTIfCondition) {
|
577 | if (!el.ifConditions) {
|
578 | el.ifConditions = []
|
579 | }
|
580 | el.ifConditions.push(condition)
|
581 | }
|
582 |
|
583 | function processOnce (el) {
|
584 | const once = getAndRemoveAttr(el, 'v-once')
|
585 | if (once != null) {
|
586 | el.once = true
|
587 | }
|
588 | }
|
589 |
|
590 |
|
591 |
|
592 | function processSlotContent (el) {
|
593 | let slotScope
|
594 | if (el.tag === 'template') {
|
595 | slotScope = getAndRemoveAttr(el, 'scope')
|
596 |
|
597 | if (process.env.NODE_ENV !== 'production' && slotScope) {
|
598 | warn(
|
599 | `the "scope" attribute for scoped slots have been deprecated and ` +
|
600 | `replaced by "slot-scope" since 2.5. The new "slot-scope" attribute ` +
|
601 | `can also be used on plain elements in addition to <template> to ` +
|
602 | `denote scoped slots.`,
|
603 | el.rawAttrsMap['scope'],
|
604 | true
|
605 | )
|
606 | }
|
607 | el.slotScope = slotScope || getAndRemoveAttr(el, 'slot-scope')
|
608 | } else if ((slotScope = getAndRemoveAttr(el, 'slot-scope'))) {
|
609 |
|
610 | if (process.env.NODE_ENV !== 'production' && el.attrsMap['v-for']) {
|
611 | warn(
|
612 | `Ambiguous combined usage of slot-scope and v-for on <${el.tag}> ` +
|
613 | `(v-for takes higher priority). Use a wrapper <template> for the ` +
|
614 | `scoped slot to make it clearer.`,
|
615 | el.rawAttrsMap['slot-scope'],
|
616 | true
|
617 | )
|
618 | }
|
619 | el.slotScope = slotScope
|
620 | }
|
621 |
|
622 |
|
623 | const slotTarget = getBindingAttr(el, 'slot')
|
624 | if (slotTarget) {
|
625 | el.slotTarget = slotTarget === '""' ? '"default"' : slotTarget
|
626 | el.slotTargetDynamic = !!(el.attrsMap[':slot'] || el.attrsMap['v-bind:slot'])
|
627 |
|
628 |
|
629 | if (el.tag !== 'template' && !el.slotScope) {
|
630 | addAttr(el, 'slot', slotTarget, getRawBindingAttr(el, 'slot'))
|
631 | }
|
632 | }
|
633 |
|
634 |
|
635 | if (process.env.NEW_SLOT_SYNTAX) {
|
636 | if (el.tag === 'template') {
|
637 |
|
638 | const slotBinding = getAndRemoveAttrByRegex(el, slotRE)
|
639 | if (slotBinding) {
|
640 | if (process.env.NODE_ENV !== 'production') {
|
641 | if (el.slotTarget || el.slotScope) {
|
642 | warn(
|
643 | `Unexpected mixed usage of different slot syntaxes.`,
|
644 | el
|
645 | )
|
646 | }
|
647 | if (el.parent && !maybeComponent(el.parent)) {
|
648 | warn(
|
649 | `<template v-slot> can only appear at the root level inside ` +
|
650 | `the receiving the component`,
|
651 | el
|
652 | )
|
653 | }
|
654 | }
|
655 | const { name, dynamic } = getSlotName(slotBinding)
|
656 | el.slotTarget = name
|
657 | el.slotTargetDynamic = dynamic
|
658 | el.slotScope = slotBinding.value || `_`
|
659 | }
|
660 | } else {
|
661 |
|
662 | const slotBinding = getAndRemoveAttrByRegex(el, slotRE)
|
663 | if (slotBinding) {
|
664 | if (process.env.NODE_ENV !== 'production') {
|
665 | if (!maybeComponent(el)) {
|
666 | warn(
|
667 | `v-slot can only be used on components or <template>.`,
|
668 | slotBinding
|
669 | )
|
670 | }
|
671 | if (el.slotScope || el.slotTarget) {
|
672 | warn(
|
673 | `Unexpected mixed usage of different slot syntaxes.`,
|
674 | el
|
675 | )
|
676 | }
|
677 | if (el.scopedSlots) {
|
678 | warn(
|
679 | `To avoid scope ambiguity, the default slot should also use ` +
|
680 | `<template> syntax when there are other named slots.`,
|
681 | slotBinding
|
682 | )
|
683 | }
|
684 | }
|
685 |
|
686 | const slots = el.scopedSlots || (el.scopedSlots = {})
|
687 | const { name, dynamic } = getSlotName(slotBinding)
|
688 | const slotContainer = slots[name] = createASTElement('template', [], el)
|
689 | slotContainer.slotTarget = name
|
690 | slotContainer.slotTargetDynamic = dynamic
|
691 | slotContainer.children = el.children.filter(c => !(c: any).slotScope)
|
692 | slotContainer.slotScope = slotBinding.value || `_`
|
693 |
|
694 | el.children = []
|
695 |
|
696 | el.plain = false
|
697 | }
|
698 | }
|
699 | }
|
700 | }
|
701 |
|
702 | function getSlotName (binding) {
|
703 | let name = binding.name.replace(slotRE, '')
|
704 | if (!name) {
|
705 | if (binding.name[0] !== '#') {
|
706 | name = 'default'
|
707 | } else if (process.env.NODE_ENV !== 'production') {
|
708 | warn(
|
709 | `v-slot shorthand syntax requires a slot name.`,
|
710 | binding
|
711 | )
|
712 | }
|
713 | }
|
714 | return dynamicArgRE.test(name)
|
715 |
|
716 | ? { name: name.slice(1, -1), dynamic: true }
|
717 |
|
718 | : { name: `"${name}"`, dynamic: false }
|
719 | }
|
720 |
|
721 |
|
722 | function processSlotOutlet (el) {
|
723 | if (el.tag === 'slot') {
|
724 | el.slotName = getBindingAttr(el, 'name')
|
725 | if (process.env.NODE_ENV !== 'production' && el.key) {
|
726 | warn(
|
727 | `\`key\` does not work on <slot> because slots are abstract outlets ` +
|
728 | `and can possibly expand into multiple elements. ` +
|
729 | `Use the key on a wrapping element instead.`,
|
730 | getRawBindingAttr(el, 'key')
|
731 | )
|
732 | }
|
733 | }
|
734 | }
|
735 |
|
736 | function processComponent (el) {
|
737 | let binding
|
738 | if ((binding = getBindingAttr(el, 'is'))) {
|
739 | el.component = binding
|
740 | }
|
741 | if (getAndRemoveAttr(el, 'inline-template') != null) {
|
742 | el.inlineTemplate = true
|
743 | }
|
744 | }
|
745 |
|
746 | function processAttrs (el) {
|
747 | const list = el.attrsList
|
748 | let i, l, name, rawName, value, modifiers, syncGen, isDynamic
|
749 | for (i = 0, l = list.length; i < l; i++) {
|
750 | name = rawName = list[i].name
|
751 | value = list[i].value
|
752 | if (dirRE.test(name)) {
|
753 |
|
754 | el.hasBindings = true
|
755 |
|
756 | modifiers = parseModifiers(name.replace(dirRE, ''))
|
757 |
|
758 | if (process.env.VBIND_PROP_SHORTHAND && propBindRE.test(name)) {
|
759 | (modifiers || (modifiers = {})).prop = true
|
760 | name = `.` + name.slice(1).replace(modifierRE, '')
|
761 | } else if (modifiers) {
|
762 | name = name.replace(modifierRE, '')
|
763 | }
|
764 | if (bindRE.test(name)) {
|
765 | name = name.replace(bindRE, '')
|
766 | value = parseFilters(value)
|
767 | isDynamic = dynamicArgRE.test(name)
|
768 | if (isDynamic) {
|
769 | name = name.slice(1, -1)
|
770 | }
|
771 | if (
|
772 | process.env.NODE_ENV !== 'production' &&
|
773 | value.trim().length === 0
|
774 | ) {
|
775 | warn(
|
776 | `The value for a v-bind expression cannot be empty. Found in "v-bind:${name}"`
|
777 | )
|
778 | }
|
779 | if (modifiers) {
|
780 | if (modifiers.prop && !isDynamic) {
|
781 | name = camelize(name)
|
782 | if (name === 'innerHtml') name = 'innerHTML'
|
783 | }
|
784 | if (modifiers.camel && !isDynamic) {
|
785 | name = camelize(name)
|
786 | }
|
787 | if (modifiers.sync) {
|
788 | syncGen = genAssignmentCode(value, `$event`)
|
789 | if (!isDynamic) {
|
790 | addHandler(
|
791 | el,
|
792 | `update:${camelize(name)}`,
|
793 | syncGen,
|
794 | null,
|
795 | false,
|
796 | warn,
|
797 | list[i]
|
798 | )
|
799 | if (hyphenate(name) !== camelize(name)) {
|
800 | addHandler(
|
801 | el,
|
802 | `update:${hyphenate(name)}`,
|
803 | syncGen,
|
804 | null,
|
805 | false,
|
806 | warn,
|
807 | list[i]
|
808 | )
|
809 | }
|
810 | } else {
|
811 |
|
812 | addHandler(
|
813 | el,
|
814 | `"update:"+(${name})`,
|
815 | syncGen,
|
816 | null,
|
817 | false,
|
818 | warn,
|
819 | list[i],
|
820 | true
|
821 | )
|
822 | }
|
823 | }
|
824 | }
|
825 | if ((modifiers && modifiers.prop) || (
|
826 | !el.component && platformMustUseProp(el.tag, el.attrsMap.type, name)
|
827 | )) {
|
828 | addProp(el, name, value, list[i], isDynamic)
|
829 | } else {
|
830 | addAttr(el, name, value, list[i], isDynamic)
|
831 | }
|
832 | } else if (onRE.test(name)) {
|
833 | name = name.replace(onRE, '')
|
834 | isDynamic = dynamicArgRE.test(name)
|
835 | if (isDynamic) {
|
836 | name = name.slice(1, -1)
|
837 | }
|
838 | addHandler(el, name, value, modifiers, false, warn, list[i], isDynamic)
|
839 | } else {
|
840 | name = name.replace(dirRE, '')
|
841 |
|
842 | const argMatch = name.match(argRE)
|
843 | let arg = argMatch && argMatch[1]
|
844 | isDynamic = false
|
845 | if (arg) {
|
846 | name = name.slice(0, -(arg.length + 1))
|
847 | if (dynamicArgRE.test(arg)) {
|
848 | arg = arg.slice(1, -1)
|
849 | isDynamic = true
|
850 | }
|
851 | }
|
852 | addDirective(el, name, rawName, value, arg, isDynamic, modifiers, list[i])
|
853 | if (process.env.NODE_ENV !== 'production' && name === 'model') {
|
854 | checkForAliasModel(el, value)
|
855 | }
|
856 | }
|
857 | } else {
|
858 |
|
859 | if (process.env.NODE_ENV !== 'production') {
|
860 | const res = parseText(value, delimiters)
|
861 | if (res) {
|
862 | warn(
|
863 | `${name}="${value}": ` +
|
864 | 'Interpolation inside attributes has been removed. ' +
|
865 | 'Use v-bind or the colon shorthand instead. For example, ' +
|
866 | 'instead of <div id="{{ val }}">, use <div :id="val">.',
|
867 | list[i]
|
868 | )
|
869 | }
|
870 | }
|
871 | addAttr(el, name, JSON.stringify(value), list[i])
|
872 |
|
873 |
|
874 | if (!el.component &&
|
875 | name === 'muted' &&
|
876 | platformMustUseProp(el.tag, el.attrsMap.type, name)) {
|
877 | addProp(el, name, 'true', list[i])
|
878 | }
|
879 | }
|
880 | }
|
881 | }
|
882 |
|
883 | function checkInFor (el: ASTElement): boolean {
|
884 | let parent = el
|
885 | while (parent) {
|
886 | if (parent.for !== undefined) {
|
887 | return true
|
888 | }
|
889 | parent = parent.parent
|
890 | }
|
891 | return false
|
892 | }
|
893 |
|
894 | function parseModifiers (name: string): Object | void {
|
895 | const match = name.match(modifierRE)
|
896 | if (match) {
|
897 | const ret = {}
|
898 | match.forEach(m => { ret[m.slice(1)] = true })
|
899 | return ret
|
900 | }
|
901 | }
|
902 |
|
903 | function makeAttrsMap (attrs: Array<Object>): Object {
|
904 | const map = {}
|
905 | for (let i = 0, l = attrs.length; i < l; i++) {
|
906 | if (
|
907 | process.env.NODE_ENV !== 'production' &&
|
908 | map[attrs[i].name] && !isIE && !isEdge
|
909 | ) {
|
910 | warn('duplicate attribute: ' + attrs[i].name, attrs[i])
|
911 | }
|
912 | map[attrs[i].name] = attrs[i].value
|
913 | }
|
914 | return map
|
915 | }
|
916 |
|
917 |
|
918 | function isTextTag (el): boolean {
|
919 | return el.tag === 'script' || el.tag === 'style'
|
920 | }
|
921 |
|
922 | function isForbiddenTag (el): boolean {
|
923 | return (
|
924 | el.tag === 'style' ||
|
925 | (el.tag === 'script' && (
|
926 | !el.attrsMap.type ||
|
927 | el.attrsMap.type === 'text/javascript'
|
928 | ))
|
929 | )
|
930 | }
|
931 |
|
932 | const ieNSBug = /^xmlns:NS\d+/
|
933 | const ieNSPrefix = /^NS\d+:/
|
934 |
|
935 |
|
936 | function guardIESVGBug (attrs) {
|
937 | const res = []
|
938 | for (let i = 0; i < attrs.length; i++) {
|
939 | const attr = attrs[i]
|
940 | if (!ieNSBug.test(attr.name)) {
|
941 | attr.name = attr.name.replace(ieNSPrefix, '')
|
942 | res.push(attr)
|
943 | }
|
944 | }
|
945 | return res
|
946 | }
|
947 |
|
948 | function checkForAliasModel (el, value) {
|
949 | let _el = el
|
950 | while (_el) {
|
951 | if (_el.for && _el.alias === value) {
|
952 | warn(
|
953 | `<${el.tag} v-model="${value}">: ` +
|
954 | `You are binding v-model directly to a v-for iteration alias. ` +
|
955 | `This will not be able to modify the v-for source array because ` +
|
956 | `writing to the alias is like modifying a function local variable. ` +
|
957 | `Consider using an array of objects and use v-model on an object property instead.`,
|
958 | el.rawAttrsMap['v-model']
|
959 | )
|
960 | }
|
961 | _el = _el.parent
|
962 | }
|
963 | }
|