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node_modules/vue/src/compiler/codegen/events.js

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+/* @flow */
+
+const fnExpRE = /^\s*([\w$_]+|\([^)]*?\))\s*=>|^function\s*\(/
+const simplePathRE = /^\s*[A-Za-z_$][\w$]*(?:\.[A-Za-z_$][\w$]*|\['.*?']|\[".*?"]|\[\d+]|\[[A-Za-z_$][\w$]*])*\s*$/
+
+// keyCode aliases
+const keyCodes: { [key: string]: number | Array<number> } = {
+  esc: 27,
+  tab: 9,
+  enter: 13,
+  space: 32,
+  up: 38,
+  left: 37,
+  right: 39,
+  down: 40,
+  'delete': [8, 46]
+}
+
+// #4868: modifiers that prevent the execution of the listener
+// need to explicitly return null so that we can determine whether to remove
+// the listener for .once
+const genGuard = condition => `if(${condition})return null;`
+
+const modifierCode: { [key: string]: string } = {
+  stop: '$event.stopPropagation();',
+  prevent: '$event.preventDefault();',
+  self: genGuard(`$event.target !== $event.currentTarget`),
+  ctrl: genGuard(`!$event.ctrlKey`),
+  shift: genGuard(`!$event.shiftKey`),
+  alt: genGuard(`!$event.altKey`),
+  meta: genGuard(`!$event.metaKey`),
+  left: genGuard(`'button' in $event && $event.button !== 0`),
+  middle: genGuard(`'button' in $event && $event.button !== 1`),
+  right: genGuard(`'button' in $event && $event.button !== 2`)
+}
+
+export function genHandlers (
+  events: ASTElementHandlers,
+  isNative: boolean,
+  warn: Function
+): string {
+  let res = isNative ? 'nativeOn:{' : 'on:{'
+  for (const name in events) {
+    const handler = events[name]
+    // #5330: warn click.right, since right clicks do not actually fire click events.
+    if (process.env.NODE_ENV !== 'production' &&
+      name === 'click' &&
+      handler && handler.modifiers && handler.modifiers.right
+    ) {
+      warn(
+        `Use "contextmenu" instead of "click.right" since right clicks ` +
+        `do not actually fire "click" events.`
+      )
+    }
+    res += `"${name}":${genHandler(name, handler)},`
+  }
+  return res.slice(0, -1) + '}'
+}
+
+function genHandler (
+  name: string,
+  handler: ASTElementHandler | Array<ASTElementHandler>
+): string {
+  if (!handler) {
+    return 'function(){}'
+  }
+
+  if (Array.isArray(handler)) {
+    return `[${handler.map(handler => genHandler(name, handler)).join(',')}]`
+  }
+
+  const isMethodPath = simplePathRE.test(handler.value)
+  const isFunctionExpression = fnExpRE.test(handler.value)
+
+  if (!handler.modifiers) {
+    return isMethodPath || isFunctionExpression
+      ? handler.value
+      : `function($event){${handler.value}}` // inline statement
+  } else {
+    let code = ''
+    let genModifierCode = ''
+    const keys = []
+    for (const key in handler.modifiers) {
+      if (modifierCode[key]) {
+        genModifierCode += modifierCode[key]
+        // left/right
+        if (keyCodes[key]) {
+          keys.push(key)
+        }
+      } else {
+        keys.push(key)
+      }
+    }
+    if (keys.length) {
+      code += genKeyFilter(keys)
+    }
+    // Make sure modifiers like prevent and stop get executed after key filtering
+    if (genModifierCode) {
+      code += genModifierCode
+    }
+    const handlerCode = isMethodPath
+      ? handler.value + '($event)'
+      : isFunctionExpression
+        ? `(${handler.value})($event)`
+        : handler.value
+    return `function($event){${code}${handlerCode}}`
+  }
+}
+
+function genKeyFilter (keys: Array<string>): string {
+  return `if(!('button' in $event)&&${keys.map(genFilterCode).join('&&')})return null;`
+}
+
+function genFilterCode (key: string): string {
+  const keyVal = parseInt(key, 10)
+  if (keyVal) {
+    return `$event.keyCode!==${keyVal}`
+  }
+  const alias = keyCodes[key]
+  return `_k($event.keyCode,${JSON.stringify(key)}${alias ? ',' + JSON.stringify(alias) : ''})`
+}

node_modules/vue/src/compiler/codegen/index.js

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+/* @flow */
+
+import { genHandlers } from './events'
+import { baseWarn, pluckModuleFunction } from '../helpers'
+import baseDirectives from '../directives/index'
+import { camelize, no } from 'shared/util'
+
+type TransformFunction = (el: ASTElement, code: string) => string;
+type DataGenFunction = (el: ASTElement) => string;
+type DirectiveFunction = (el: ASTElement, dir: ASTDirective, warn: Function) => boolean;
+
+// configurable state
+let warn
+let transforms: Array<TransformFunction>
+let dataGenFns: Array<DataGenFunction>
+let platformDirectives
+let isPlatformReservedTag
+let staticRenderFns
+let onceCount
+let currentOptions
+
+export function generate (
+  ast: ASTElement | void,
+  options: CompilerOptions
+): {
+  render: string,
+  staticRenderFns: Array<string>
+} {
+  // save previous staticRenderFns so generate calls can be nested
+  const prevStaticRenderFns: Array<string> = staticRenderFns
+  const currentStaticRenderFns: Array<string> = staticRenderFns = []
+  const prevOnceCount = onceCount
+  onceCount = 0
+  currentOptions = options
+  warn = options.warn || baseWarn
+  transforms = pluckModuleFunction(options.modules, 'transformCode')
+  dataGenFns = pluckModuleFunction(options.modules, 'genData')
+  platformDirectives = options.directives || {}
+  isPlatformReservedTag = options.isReservedTag || no
+  const code = ast ? genElement(ast) : '_c("div")'
+  staticRenderFns = prevStaticRenderFns
+  onceCount = prevOnceCount
+  return {
+    render: `with(this){return ${code}}`,
+    staticRenderFns: currentStaticRenderFns
+  }
+}
+
+function genElement (el: ASTElement): string {
+  if (el.staticRoot && !el.staticProcessed) {
+    return genStatic(el)
+  } else if (el.once && !el.onceProcessed) {
+    return genOnce(el)
+  } else if (el.for && !el.forProcessed) {
+    return genFor(el)
+  } else if (el.if && !el.ifProcessed) {
+    return genIf(el)
+  } else if (el.tag === 'template' && !el.slotTarget) {
+    return genChildren(el) || 'void 0'
+  } else if (el.tag === 'slot') {
+    return genSlot(el)
+  } else {
+    // component or element
+    let code
+    if (el.component) {
+      code = genComponent(el.component, el)
+    } else {
+      const data = el.plain ? undefined : genData(el)
+
+      const children = el.inlineTemplate ? null : genChildren(el, true)
+      code = `_c('${el.tag}'${
+        data ? `,${data}` : '' // data
+      }${
+        children ? `,${children}` : '' // children
+      })`
+    }
+    // module transforms
+    for (let i = 0; i < transforms.length; i++) {
+      code = transforms[i](el, code)
+    }
+    return code
+  }
+}
+
+// hoist static sub-trees out
+function genStatic (el: ASTElement): string {
+  el.staticProcessed = true
+  staticRenderFns.push(`with(this){return ${genElement(el)}}`)
+  return `_m(${staticRenderFns.length - 1}${el.staticInFor ? ',true' : ''})`
+}
+
+// v-once
+function genOnce (el: ASTElement): string {
+  el.onceProcessed = true
+  if (el.if && !el.ifProcessed) {
+    return genIf(el)
+  } else if (el.staticInFor) {
+    let key = ''
+    let parent = el.parent
+    while (parent) {
+      if (parent.for) {
+        key = parent.key
+        break
+      }
+      parent = parent.parent
+    }
+    if (!key) {
+      process.env.NODE_ENV !== 'production' && warn(
+        `v-once can only be used inside v-for that is keyed. `
+      )
+      return genElement(el)
+    }
+    return `_o(${genElement(el)},${onceCount++}${key ? `,${key}` : ``})`
+  } else {
+    return genStatic(el)
+  }
+}
+
+function genIf (el: any): string {
+  el.ifProcessed = true // avoid recursion
+  return genIfConditions(el.ifConditions.slice())
+}
+
+function genIfConditions (conditions: ASTIfConditions): string {
+  if (!conditions.length) {
+    return '_e()'
+  }
+
+  const condition = conditions.shift()
+  if (condition.exp) {
+    return `(${condition.exp})?${genTernaryExp(condition.block)}:${genIfConditions(conditions)}`
+  } else {
+    return `${genTernaryExp(condition.block)}`
+  }
+
+  // v-if with v-once should generate code like (a)?_m(0):_m(1)
+  function genTernaryExp (el) {
+    return el.once ? genOnce(el) : genElement(el)
+  }
+}
+
+function genFor (el: any): string {
+  const exp = el.for
+  const alias = el.alias
+  const iterator1 = el.iterator1 ? `,${el.iterator1}` : ''
+  const iterator2 = el.iterator2 ? `,${el.iterator2}` : ''
+
+  if (
+    process.env.NODE_ENV !== 'production' &&
+    maybeComponent(el) && el.tag !== 'slot' && el.tag !== 'template' && !el.key
+  ) {
+    warn(
+      `<${el.tag} v-for="${alias} in ${exp}">: component lists rendered with ` +
+      `v-for should have explicit keys. ` +
+      `See https://vuejs.org/guide/list.html#key for more info.`,
+      true /* tip */
+    )
+  }
+
+  el.forProcessed = true // avoid recursion
+  return `_l((${exp}),` +
+    `function(${alias}${iterator1}${iterator2}){` +
+      `return ${genElement(el)}` +
+    '})'
+}
+
+function genData (el: ASTElement): string {
+  let data = '{'
+
+  // directives first.
+  // directives may mutate the el's other properties before they are generated.
+  const dirs = genDirectives(el)
+  if (dirs) data += dirs + ','
+
+  // key
+  if (el.key) {
+    data += `key:${el.key},`
+  }
+  // ref
+  if (el.ref) {
+    data += `ref:${el.ref},`
+  }
+  if (el.refInFor) {
+    data += `refInFor:true,`
+  }
+  // pre
+  if (el.pre) {
+    data += `pre:true,`
+  }
+  // record original tag name for components using "is" attribute
+  if (el.component) {
+    data += `tag:"${el.tag}",`
+  }
+  // module data generation functions
+  for (let i = 0; i < dataGenFns.length; i++) {
+    data += dataGenFns[i](el)
+  }
+  // attributes
+  if (el.attrs) {
+    data += `attrs:{${genProps(el.attrs)}},`
+  }
+  // DOM props
+  if (el.props) {
+    data += `domProps:{${genProps(el.props)}},`
+  }
+  // event handlers
+  if (el.events) {
+    data += `${genHandlers(el.events, false, warn)},`
+  }
+  if (el.nativeEvents) {
+    data += `${genHandlers(el.nativeEvents, true, warn)},`
+  }
+  // slot target
+  if (el.slotTarget) {
+    data += `slot:${el.slotTarget},`
+  }
+  // scoped slots
+  if (el.scopedSlots) {
+    data += `${genScopedSlots(el.scopedSlots)},`
+  }
+  // component v-model
+  if (el.model) {
+    data += `model:{value:${
+      el.model.value
+    },callback:${
+      el.model.callback
+    },expression:${
+      el.model.expression
+    }},`
+  }
+  // inline-template
+  if (el.inlineTemplate) {
+    const inlineTemplate = genInlineTemplate(el)
+    if (inlineTemplate) {
+      data += `${inlineTemplate},`
+    }
+  }
+  data = data.replace(/,$/, '') + '}'
+  // v-bind data wrap
+  if (el.wrapData) {
+    data = el.wrapData(data)
+  }
+  return data
+}
+
+function genDirectives (el: ASTElement): string | void {
+  const dirs = el.directives
+  if (!dirs) return
+  let res = 'directives:['
+  let hasRuntime = false
+  let i, l, dir, needRuntime
+  for (i = 0, l = dirs.length; i < l; i++) {
+    dir = dirs[i]
+    needRuntime = true
+    const gen: DirectiveFunction = platformDirectives[dir.name] || baseDirectives[dir.name]
+    if (gen) {
+      // compile-time directive that manipulates AST.
+      // returns true if it also needs a runtime counterpart.
+      needRuntime = !!gen(el, dir, warn)
+    }
+    if (needRuntime) {
+      hasRuntime = true
+      res += `{name:"${dir.name}",rawName:"${dir.rawName}"${
+        dir.value ? `,value:(${dir.value}),expression:${JSON.stringify(dir.value)}` : ''
+      }${
+        dir.arg ? `,arg:"${dir.arg}"` : ''
+      }${
+        dir.modifiers ? `,modifiers:${JSON.stringify(dir.modifiers)}` : ''
+      }},`
+    }
+  }
+  if (hasRuntime) {
+    return res.slice(0, -1) + ']'
+  }
+}
+
+function genInlineTemplate (el: ASTElement): ?string {
+  const ast = el.children[0]
+  if (process.env.NODE_ENV !== 'production' && (
+    el.children.length > 1 || ast.type !== 1
+  )) {
+    warn('Inline-template components must have exactly one child element.')
+  }
+  if (ast.type === 1) {
+    const inlineRenderFns = generate(ast, currentOptions)
+    return `inlineTemplate:{render:function(){${
+      inlineRenderFns.render
+    }},staticRenderFns:[${
+      inlineRenderFns.staticRenderFns.map(code => `function(){${code}}`).join(',')
+    }]}`
+  }
+}
+
+function genScopedSlots (slots: { [key: string]: ASTElement }): string {
+  return `scopedSlots:_u([${
+    Object.keys(slots).map(key => genScopedSlot(key, slots[key])).join(',')
+  }])`
+}
+
+function genScopedSlot (key: string, el: ASTElement) {
+  if (el.for && !el.forProcessed) {
+    return genForScopedSlot(key, el)
+  }
+  return `{key:${key},fn:function(${String(el.attrsMap.scope)}){` +
+    `return ${el.tag === 'template'
+      ? genChildren(el) || 'void 0'
+      : genElement(el)
+  }}}`
+}
+
+function genForScopedSlot (key: string, el: any) {
+  const exp = el.for
+  const alias = el.alias
+  const iterator1 = el.iterator1 ? `,${el.iterator1}` : ''
+  const iterator2 = el.iterator2 ? `,${el.iterator2}` : ''
+  el.forProcessed = true // avoid recursion
+  return `_l((${exp}),` +
+    `function(${alias}${iterator1}${iterator2}){` +
+      `return ${genScopedSlot(key, el)}` +
+    '})'
+}
+
+function genChildren (el: ASTElement, checkSkip?: boolean): string | void {
+  const children = el.children
+  if (children.length) {
+    const el: any = children[0]
+    // optimize single v-for
+    if (children.length === 1 &&
+      el.for &&
+      el.tag !== 'template' &&
+      el.tag !== 'slot'
+    ) {
+      return genElement(el)
+    }
+    const normalizationType = checkSkip ? getNormalizationType(children) : 0
+    return `[${children.map(genNode).join(',')}]${
+      normalizationType ? `,${normalizationType}` : ''
+    }`
+  }
+}
+
+// determine the normalization needed for the children array.
+// 0: no normalization needed
+// 1: simple normalization needed (possible 1-level deep nested array)
+// 2: full normalization needed
+function getNormalizationType (children: Array<ASTNode>): number {
+  let res = 0
+  for (let i = 0; i < children.length; i++) {
+    const el: ASTNode = children[i]
+    if (el.type !== 1) {
+      continue
+    }
+    if (needsNormalization(el) ||
+        (el.ifConditions && el.ifConditions.some(c => needsNormalization(c.block)))) {
+      res = 2
+      break
+    }
+    if (maybeComponent(el) ||
+        (el.ifConditions && el.ifConditions.some(c => maybeComponent(c.block)))) {
+      res = 1
+    }
+  }
+  return res
+}
+
+function needsNormalization (el: ASTElement): boolean {
+  return el.for !== undefined || el.tag === 'template' || el.tag === 'slot'
+}
+
+function maybeComponent (el: ASTElement): boolean {
+  return !isPlatformReservedTag(el.tag)
+}
+
+function genNode (node: ASTNode): string {
+  if (node.type === 1) {
+    return genElement(node)
+  } else {
+    return genText(node)
+  }
+}
+
+function genText (text: ASTText | ASTExpression): string {
+  return `_v(${text.type === 2
+    ? text.expression // no need for () because already wrapped in _s()
+    : transformSpecialNewlines(JSON.stringify(text.text))
+  })`
+}
+
+function genSlot (el: ASTElement): string {
+  const slotName = el.slotName || '"default"'
+  const children = genChildren(el)
+  let res = `_t(${slotName}${children ? `,${children}` : ''}`
+  const attrs = el.attrs && `{${el.attrs.map(a => `${camelize(a.name)}:${a.value}`).join(',')}}`
+  const bind = el.attrsMap['v-bind']
+  if ((attrs || bind) && !children) {
+    res += `,null`
+  }
+  if (attrs) {
+    res += `,${attrs}`
+  }
+  if (bind) {
+    res += `${attrs ? '' : ',null'},${bind}`
+  }
+  return res + ')'
+}
+
+// componentName is el.component, take it as argument to shun flow's pessimistic refinement
+function genComponent (componentName: string, el: ASTElement): string {
+  const children = el.inlineTemplate ? null : genChildren(el, true)
+  return `_c(${componentName},${genData(el)}${
+    children ? `,${children}` : ''
+  })`
+}
+
+function genProps (props: Array<{ name: string, value: string }>): string {
+  let res = ''
+  for (let i = 0; i < props.length; i++) {
+    const prop = props[i]
+    res += `"${prop.name}":${transformSpecialNewlines(prop.value)},`
+  }
+  return res.slice(0, -1)
+}
+
+// #3895, #4268
+function transformSpecialNewlines (text: string): string {
+  return text
+    .replace(/\u2028/g, '\\u2028')
+    .replace(/\u2029/g, '\\u2029')
+}

node_modules/vue/src/compiler/directives/bind.js

@@ -0,0 +1,9 @@
+/* @flow */
+
+export default function bind (el: ASTElement, dir: ASTDirective) {
+  el.wrapData = (code: string) => {
+    return `_b(${code},'${el.tag}',${dir.value}${
+      dir.modifiers && dir.modifiers.prop ? ',true' : ''
+    })`
+  }
+}

node_modules/vue/src/compiler/directives/index.js

@@ -0,0 +1,9 @@
+/* @flow */
+
+import bind from './bind'
+import { noop } from 'shared/util'
+
+export default {
+  bind,
+  cloak: noop
+}

node_modules/vue/src/compiler/directives/model.js

@@ -0,0 +1,133 @@
+/* @flow */
+
+/**
+ * Cross-platform code generation for component v-model
+ */
+export function genComponentModel (
+  el: ASTElement,
+  value: string,
+  modifiers: ?ASTModifiers
+): ?boolean {
+  const { number, trim } = modifiers || {}
+
+  const baseValueExpression = '$$v'
+  let valueExpression = baseValueExpression
+  if (trim) {
+    valueExpression =
+      `(typeof ${baseValueExpression} === 'string'` +
+        `? ${baseValueExpression}.trim()` +
+        `: ${baseValueExpression})`
+  }
+  if (number) {
+    valueExpression = `_n(${valueExpression})`
+  }
+  const assignment = genAssignmentCode(value, valueExpression)
+
+  el.model = {
+    value: `(${value})`,
+    expression: `"${value}"`,
+    callback: `function (${baseValueExpression}) {${assignment}}`
+  }
+}
+
+/**
+ * Cross-platform codegen helper for generating v-model value assignment code.
+ */
+export function genAssignmentCode (
+  value: string,
+  assignment: string
+): string {
+  const modelRs = parseModel(value)
+  if (modelRs.idx === null) {
+    return `${value}=${assignment}`
+  } else {
+    return `var $$exp = ${modelRs.exp}, $$idx = ${modelRs.idx};` +
+      `if (!Array.isArray($$exp)){` +
+        `${value}=${assignment}}` +
+      `else{$$exp.splice($$idx, 1, ${assignment})}`
+  }
+}
+
+/**
+ * parse directive model to do the array update transform. a[idx] = val => $$a.splice($$idx, 1, val)
+ *
+ * for loop possible cases:
+ *
+ * - test
+ * - test[idx]
+ * - test[test1[idx]]
+ * - test["a"][idx]
+ * - xxx.test[a[a].test1[idx]]
+ * - test.xxx.a["asa"][test1[idx]]
+ *
+ */
+
+let len, str, chr, index, expressionPos, expressionEndPos
+
+export function parseModel (val: string): Object {
+  str = val
+  len = str.length
+  index = expressionPos = expressionEndPos = 0
+
+  if (val.indexOf('[') < 0 || val.lastIndexOf(']') < len - 1) {
+    return {
+      exp: val,
+      idx: null
+    }
+  }
+
+  while (!eof()) {
+    chr = next()
+    /* istanbul ignore if */
+    if (isStringStart(chr)) {
+      parseString(chr)
+    } else if (chr === 0x5B) {
+      parseBracket(chr)
+    }
+  }
+
+  return {
+    exp: val.substring(0, expressionPos),
+    idx: val.substring(expressionPos + 1, expressionEndPos)
+  }
+}
+
+function next (): number {
+  return str.charCodeAt(++index)
+}
+
+function eof (): boolean {
+  return index >= len
+}
+
+function isStringStart (chr: number): boolean {
+  return chr === 0x22 || chr === 0x27
+}
+
+function parseBracket (chr: number): void {
+  let inBracket = 1
+  expressionPos = index
+  while (!eof()) {
+    chr = next()
+    if (isStringStart(chr)) {
+      parseString(chr)
+      continue
+    }
+    if (chr === 0x5B) inBracket++
+    if (chr === 0x5D) inBracket--
+    if (inBracket === 0) {
+      expressionEndPos = index
+      break
+    }
+  }
+}
+
+function parseString (chr: number): void {
+  const stringQuote = chr
+  while (!eof()) {
+    chr = next()
+    if (chr === stringQuote) {
+      break
+    }
+  }
+}

node_modules/vue/src/compiler/error-detector.js

@@ -0,0 +1,98 @@
+/* @flow */
+
+import { dirRE, onRE } from './parser/index'
+
+// these keywords should not appear inside expressions, but operators like
+// typeof, instanceof and in are allowed
+const prohibitedKeywordRE = new RegExp('\\b' + (
+  'do,if,for,let,new,try,var,case,else,with,await,break,catch,class,const,' +
+  'super,throw,while,yield,delete,export,import,return,switch,default,' +
+  'extends,finally,continue,debugger,function,arguments'
+).split(',').join('\\b|\\b') + '\\b')
+
+// these unary operators should not be used as property/method names
+const unaryOperatorsRE = new RegExp('\\b' + (
+  'delete,typeof,void'
+).split(',').join('\\s*\\([^\\)]*\\)|\\b') + '\\s*\\([^\\)]*\\)')
+
+// check valid identifier for v-for
+const identRE = /[A-Za-z_$][\w$]*/
+
+// strip strings in expressions
+const stripStringRE = /'(?:[^'\\]|\\.)*'|"(?:[^"\\]|\\.)*"|`(?:[^`\\]|\\.)*\$\{|\}(?:[^`\\]|\\.)*`|`(?:[^`\\]|\\.)*`/g
+
+// detect problematic expressions in a template
+export function detectErrors (ast: ?ASTNode): Array<string> {
+  const errors: Array<string> = []
+  if (ast) {
+    checkNode(ast, errors)
+  }
+  return errors
+}
+
+function checkNode (node: ASTNode, errors: Array<string>) {
+  if (node.type === 1) {
+    for (const name in node.attrsMap) {
+      if (dirRE.test(name)) {
+        const value = node.attrsMap[name]
+        if (value) {
+          if (name === 'v-for') {
+            checkFor(node, `v-for="${value}"`, errors)
+          } else if (onRE.test(name)) {
+            checkEvent(value, `${name}="${value}"`, errors)
+          } else {
+            checkExpression(value, `${name}="${value}"`, errors)
+          }
+        }
+      }
+    }
+    if (node.children) {
+      for (let i = 0; i < node.children.length; i++) {
+        checkNode(node.children[i], errors)
+      }
+    }
+  } else if (node.type === 2) {
+    checkExpression(node.expression, node.text, errors)
+  }
+}
+
+function checkEvent (exp: string, text: string, errors: Array<string>) {
+  const stipped = exp.replace(stripStringRE, '')
+  const keywordMatch: any = stipped.match(unaryOperatorsRE)
+  if (keywordMatch && stipped.charAt(keywordMatch.index - 1) !== '$') {
+    errors.push(
+      `avoid using JavaScript unary operator as property name: ` +
+      `"${keywordMatch[0]}" in expression ${text.trim()}`
+    )
+  }
+  checkExpression(exp, text, errors)
+}
+
+function checkFor (node: ASTElement, text: string, errors: Array<string>) {
+  checkExpression(node.for || '', text, errors)
+  checkIdentifier(node.alias, 'v-for alias', text, errors)
+  checkIdentifier(node.iterator1, 'v-for iterator', text, errors)
+  checkIdentifier(node.iterator2, 'v-for iterator', text, errors)
+}
+
+function checkIdentifier (ident: ?string, type: string, text: string, errors: Array<string>) {
+  if (typeof ident === 'string' && !identRE.test(ident)) {
+    errors.push(`invalid ${type} "${ident}" in expression: ${text.trim()}`)
+  }
+}
+
+function checkExpression (exp: string, text: string, errors: Array<string>) {
+  try {
+    new Function(`return ${exp}`)
+  } catch (e) {
+    const keywordMatch = exp.replace(stripStringRE, '').match(prohibitedKeywordRE)
+    if (keywordMatch) {
+      errors.push(
+        `avoid using JavaScript keyword as property name: ` +
+        `"${keywordMatch[0]}" in expression ${text.trim()}`
+      )
+    } else {
+      errors.push(`invalid expression: ${text.trim()}`)
+    }
+  }
+}

node_modules/vue/src/compiler/helpers.js

@@ -0,0 +1,119 @@
+/* @flow */
+
+import { parseFilters } from './parser/filter-parser'
+
+export function baseWarn (msg: string) {
+  console.error(`[Vue compiler]: ${msg}`)
+}
+
+export function pluckModuleFunction<F: Function> (
+  modules: ?Array<Object>,
+  key: string
+): Array<F> {
+  return modules
+    ? modules.map(m => m[key]).filter(_ => _)
+    : []
+}
+
+export function addProp (el: ASTElement, name: string, value: string) {
+  (el.props || (el.props = [])).push({ name, value })
+}
+
+export function addAttr (el: ASTElement, name: string, value: string) {
+  (el.attrs || (el.attrs = [])).push({ name, value })
+}
+
+export function addDirective (
+  el: ASTElement,
+  name: string,
+  rawName: string,
+  value: string,
+  arg: ?string,
+  modifiers: ?ASTModifiers
+) {
+  (el.directives || (el.directives = [])).push({ name, rawName, value, arg, modifiers })
+}
+
+export function addHandler (
+  el: ASTElement,
+  name: string,
+  value: string,
+  modifiers: ?ASTModifiers,
+  important?: boolean,
+  warn?: Function
+) {
+  // warn prevent and passive modifier
+  /* istanbul ignore if */
+  if (
+    process.env.NODE_ENV !== 'production' && warn &&
+    modifiers && modifiers.prevent && modifiers.passive
+  ) {
+    warn(
+      'passive and prevent can\'t be used together. ' +
+      'Passive handler can\'t prevent default event.'
+    )
+  }
+  // check capture modifier
+  if (modifiers && modifiers.capture) {
+    delete modifiers.capture
+    name = '!' + name // mark the event as captured
+  }
+  if (modifiers && modifiers.once) {
+    delete modifiers.once
+    name = '~' + name // mark the event as once
+  }
+  /* istanbul ignore if */
+  if (modifiers && modifiers.passive) {
+    delete modifiers.passive
+    name = '&' + name // mark the event as passive
+  }
+  let events
+  if (modifiers && modifiers.native) {
+    delete modifiers.native
+    events = el.nativeEvents || (el.nativeEvents = {})
+  } else {
+    events = el.events || (el.events = {})
+  }
+  const newHandler = { value, modifiers }
+  const handlers = events[name]
+  /* istanbul ignore if */
+  if (Array.isArray(handlers)) {
+    important ? handlers.unshift(newHandler) : handlers.push(newHandler)
+  } else if (handlers) {
+    events[name] = important ? [newHandler, handlers] : [handlers, newHandler]
+  } else {
+    events[name] = newHandler
+  }
+}
+
+export function getBindingAttr (
+  el: ASTElement,
+  name: string,
+  getStatic?: boolean
+): ?string {
+  const dynamicValue =
+    getAndRemoveAttr(el, ':' + name) ||
+    getAndRemoveAttr(el, 'v-bind:' + name)
+  if (dynamicValue != null) {
+    return parseFilters(dynamicValue)
+  } else if (getStatic !== false) {
+    const staticValue = getAndRemoveAttr(el, name)
+    if (staticValue != null) {
+      return JSON.stringify(staticValue)
+    }
+  }
+}
+
+export function getAndRemoveAttr (el: ASTElement, name: string): ?string {
+  let val
+  if ((val = el.attrsMap[name]) != null) {
+    const list = el.attrsList
+    for (let i = 0, l = list.length; i < l; i++) {
+      if (list[i].name === name) {
+        list.splice(i, 1)
+        break
+      }
+    }
+  }
+  return val
+}

node_modules/vue/src/compiler/index.js

@@ -0,0 +1,159 @@
+/* @flow */
+
+import { parse } from './parser/index'
+import { optimize } from './optimizer'
+import { generate } from './codegen/index'
+import { detectErrors } from './error-detector'
+import { extend, noop } from 'shared/util'
+import { warn, tip } from 'core/util/debug'
+
+function baseCompile (
+  template: string,
+  options: CompilerOptions
+): CompiledResult {
+  const ast = parse(template.trim(), options)
+  optimize(ast, options)
+  const code = generate(ast, options)
+  return {
+    ast,
+    render: code.render,
+    staticRenderFns: code.staticRenderFns
+  }
+}
+
+function makeFunction (code, errors) {
+  try {
+    return new Function(code)
+  } catch (err) {
+    errors.push({ err, code })
+    return noop
+  }
+}
+
+export function createCompiler (baseOptions: CompilerOptions) {
+  const functionCompileCache: {
+    [key: string]: CompiledFunctionResult;
+  } = Object.create(null)
+
+  function compile (
+    template: string,
+    options?: CompilerOptions
+  ): CompiledResult {
+    const finalOptions = Object.create(baseOptions)
+    const errors = []
+    const tips = []
+    finalOptions.warn = (msg, tip) => {
+      (tip ? tips : errors).push(msg)
+    }
+
+    if (options) {
+      // merge custom modules
+      if (options.modules) {
+        finalOptions.modules = (baseOptions.modules || []).concat(options.modules)
+      }
+      // merge custom directives
+      if (options.directives) {
+        finalOptions.directives = extend(
+          Object.create(baseOptions.directives),
+          options.directives
+        )
+      }
+      // copy other options
+      for (const key in options) {
+        if (key !== 'modules' && key !== 'directives') {
+          finalOptions[key] = options[key]
+        }
+      }
+    }
+
+    const compiled = baseCompile(template, finalOptions)
+    if (process.env.NODE_ENV !== 'production') {
+      errors.push.apply(errors, detectErrors(compiled.ast))
+    }
+    compiled.errors = errors
+    compiled.tips = tips
+    return compiled
+  }
+
+  function compileToFunctions (
+    template: string,
+    options?: CompilerOptions,
+    vm?: Component
+  ): CompiledFunctionResult {
+    options = options || {}
+
+    /* istanbul ignore if */
+    if (process.env.NODE_ENV !== 'production') {
+      // detect possible CSP restriction
+      try {
+        new Function('return 1')
+      } catch (e) {
+        if (e.toString().match(/unsafe-eval|CSP/)) {
+          warn(
+            'It seems you are using the standalone build of Vue.js in an ' +
+            'environment with Content Security Policy that prohibits unsafe-eval. ' +
+            'The template compiler cannot work in this environment. Consider ' +
+            'relaxing the policy to allow unsafe-eval or pre-compiling your ' +
+            'templates into render functions.'
+          )
+        }
+      }
+    }
+
+    // check cache
+    const key = options.delimiters
+      ? String(options.delimiters) + template
+      : template
+    if (functionCompileCache[key]) {
+      return functionCompileCache[key]
+    }
+
+    // compile
+    const compiled = compile(template, options)
+
+    // check compilation errors/tips
+    if (process.env.NODE_ENV !== 'production') {
+      if (compiled.errors && compiled.errors.length) {
+        warn(
+          `Error compiling template:\n\n${template}\n\n` +
+          compiled.errors.map(e => `- ${e}`).join('\n') + '\n',
+          vm
+        )
+      }
+      if (compiled.tips && compiled.tips.length) {
+        compiled.tips.forEach(msg => tip(msg, vm))
+      }
+    }
+
+    // turn code into functions
+    const res = {}
+    const fnGenErrors = []
+    res.render = makeFunction(compiled.render, fnGenErrors)
+    const l = compiled.staticRenderFns.length
+    res.staticRenderFns = new Array(l)
+    for (let i = 0; i < l; i++) {
+      res.staticRenderFns[i] = makeFunction(compiled.staticRenderFns[i], fnGenErrors)
+    }
+
+    // check function generation errors.
+    // this should only happen if there is a bug in the compiler itself.
+    // mostly for codegen development use
+    /* istanbul ignore if */
+    if (process.env.NODE_ENV !== 'production') {
+      if ((!compiled.errors || !compiled.errors.length) && fnGenErrors.length) {
+        warn(
+          `Failed to generate render function:\n\n` +
+          fnGenErrors.map(({ err, code }) => `${err.toString()} in\n\n${code}\n`).join('\n'),
+          vm
+        )
+      }
+    }
+
+    return (functionCompileCache[key] = res)
+  }
+
+  return {
+    compile,
+    compileToFunctions
+  }
+}

node_modules/vue/src/compiler/optimizer.js

@@ -0,0 +1,123 @@
+/* @flow */
+
+import { makeMap, isBuiltInTag, cached, no } from 'shared/util'
+
+let isStaticKey
+let isPlatformReservedTag
+
+const genStaticKeysCached = cached(genStaticKeys)
+
+/**
+ * Goal of the optimizer: walk the generated template AST tree
+ * and detect sub-trees that are purely static, i.e. parts of
+ * the DOM that never needs to change.
+ *
+ * Once we detect these sub-trees, we can:
+ *
+ * 1. Hoist them into constants, so that we no longer need to
+ *    create fresh nodes for them on each re-render;
+ * 2. Completely skip them in the patching process.
+ */
+export function optimize (root: ?ASTElement, options: CompilerOptions) {
+  if (!root) return
+  isStaticKey = genStaticKeysCached(options.staticKeys || '')
+  isPlatformReservedTag = options.isReservedTag || no
+  // first pass: mark all non-static nodes.
+  markStatic(root)
+  // second pass: mark static roots.
+  markStaticRoots(root, false)
+}
+
+function genStaticKeys (keys: string): Function {
+  return makeMap(
+    'type,tag,attrsList,attrsMap,plain,parent,children,attrs' +
+    (keys ? ',' + keys : '')
+  )
+}
+
+function markStatic (node: ASTNode) {
+  node.static = isStatic(node)
+  if (node.type === 1) {
+    // do not make component slot content static. this avoids
+    // 1. components not able to mutate slot nodes
+    // 2. static slot content fails for hot-reloading
+    if (
+      !isPlatformReservedTag(node.tag) &&
+      node.tag !== 'slot' &&
+      node.attrsMap['inline-template'] == null
+    ) {
+      return
+    }
+    for (let i = 0, l = node.children.length; i < l; i++) {
+      const child = node.children[i]
+      markStatic(child)
+      if (!child.static) {
+        node.static = false
+      }
+    }
+  }
+}
+
+function markStaticRoots (node: ASTNode, isInFor: boolean) {
+  if (node.type === 1) {
+    if (node.static || node.once) {
+      node.staticInFor = isInFor
+    }
+    // For a node to qualify as a static root, it should have children that
+    // are not just static text. Otherwise the cost of hoisting out will
+    // outweigh the benefits and it's better off to just always render it fresh.
+    if (node.static && node.children.length && !(
+      node.children.length === 1 &&
+      node.children[0].type === 3
+    )) {
+      node.staticRoot = true
+      return
+    } else {
+      node.staticRoot = false
+    }
+    if (node.children) {
+      for (let i = 0, l = node.children.length; i < l; i++) {
+        markStaticRoots(node.children[i], isInFor || !!node.for)
+      }
+    }
+    if (node.ifConditions) {
+      walkThroughConditionsBlocks(node.ifConditions, isInFor)
+    }
+  }
+}
+
+function walkThroughConditionsBlocks (conditionBlocks: ASTIfConditions, isInFor: boolean): void {
+  for (let i = 1, len = conditionBlocks.length; i < len; i++) {
+    markStaticRoots(conditionBlocks[i].block, isInFor)
+  }
+}
+
+function isStatic (node: ASTNode): boolean {
+  if (node.type === 2) { // expression
+    return false
+  }
+  if (node.type === 3) { // text
+    return true
+  }
+  return !!(node.pre || (
+    !node.hasBindings && // no dynamic bindings
+    !node.if && !node.for && // not v-if or v-for or v-else
+    !isBuiltInTag(node.tag) && // not a built-in
+    isPlatformReservedTag(node.tag) && // not a component
+    !isDirectChildOfTemplateFor(node) &&
+    Object.keys(node).every(isStaticKey)
+  ))
+}
+
+function isDirectChildOfTemplateFor (node: ASTElement): boolean {
+  while (node.parent) {
+    node = node.parent
+    if (node.tag !== 'template') {
+      return false
+    }
+    if (node.for) {
+      return true
+    }
+  }
+  return false
+}

node_modules/vue/src/compiler/parser/entity-decoder.js

@@ -0,0 +1,9 @@
+/* @flow */
+
+let decoder
+
+export function decode (html: string): string {
+  decoder = decoder || document.createElement('div')
+  decoder.innerHTML = html
+  return decoder.textContent
+}

node_modules/vue/src/compiler/parser/filter-parser.js

@@ -0,0 +1,97 @@
+/* @flow */
+
+const validDivisionCharRE = /[\w).+\-_$\]]/
+
+export function parseFilters (exp: string): string {
+  let inSingle = false
+  let inDouble = false
+  let inTemplateString = false
+  let inRegex = false
+  let curly = 0
+  let square = 0
+  let paren = 0
+  let lastFilterIndex = 0
+  let c, prev, i, expression, filters
+
+  for (i = 0; i < exp.length; i++) {
+    prev = c
+    c = exp.charCodeAt(i)
+    if (inSingle) {
+      if (c === 0x27 && prev !== 0x5C) inSingle = false
+    } else if (inDouble) {
+      if (c === 0x22 && prev !== 0x5C) inDouble = false
+    } else if (inTemplateString) {
+      if (c === 0x60 && prev !== 0x5C) inTemplateString = false
+    } else if (inRegex) {
+      if (c === 0x2f && prev !== 0x5C) inRegex = false
+    } else if (
+      c === 0x7C && // pipe
+      exp.charCodeAt(i + 1) !== 0x7C &&
+      exp.charCodeAt(i - 1) !== 0x7C &&
+      !curly && !square && !paren
+    ) {
+      if (expression === undefined) {
+        // first filter, end of expression
+        lastFilterIndex = i + 1
+        expression = exp.slice(0, i).trim()
+      } else {
+        pushFilter()
+      }
+    } else {
+      switch (c) {
+        case 0x22: inDouble = true; break         // "
+        case 0x27: inSingle = true; break         // '
+        case 0x60: inTemplateString = true; break // `
+        case 0x28: paren++; break                 // (
+        case 0x29: paren--; break                 // )
+        case 0x5B: square++; break                // [
+        case 0x5D: square--; break                // ]
+        case 0x7B: curly++; break                 // {
+        case 0x7D: curly--; break                 // }
+      }
+      if (c === 0x2f) { // /
+        let j = i - 1
+        let p
+        // find first non-whitespace prev char
+        for (; j >= 0; j--) {
+          p = exp.charAt(j)
+          if (p !== ' ') break
+        }
+        if (!p || !validDivisionCharRE.test(p)) {
+          inRegex = true
+        }
+      }
+    }
+  }
+
+  if (expression === undefined) {
+    expression = exp.slice(0, i).trim()
+  } else if (lastFilterIndex !== 0) {
+    pushFilter()
+  }
+
+  function pushFilter () {
+    (filters || (filters = [])).push(exp.slice(lastFilterIndex, i).trim())
+    lastFilterIndex = i + 1
+  }
+
+  if (filters) {
+    for (i = 0; i < filters.length; i++) {
+      expression = wrapFilter(expression, filters[i])
+    }
+  }
+
+  return expression
+}
+
+function wrapFilter (exp: string, filter: string): string {
+  const i = filter.indexOf('(')
+  if (i < 0) {
+    // _f: resolveFilter
+    return `_f("${filter}")(${exp})`
+  } else {
+    const name = filter.slice(0, i)
+    const args = filter.slice(i + 1)
+    return `_f("${name}")(${exp},${args}`
+  }
+}

node_modules/vue/src/compiler/parser/html-parser.js

@@ -0,0 +1,310 @@
+/**
+ * Not type-checking this file because it's mostly vendor code.
+ */
+
+/*!
+ * HTML Parser By John Resig (ejohn.org)
+ * Modified by Juriy "kangax" Zaytsev
+ * Original code by Erik Arvidsson, Mozilla Public License
+ * http://erik.eae.net/simplehtmlparser/simplehtmlparser.js
+ */
+
+import { makeMap, no } from 'shared/util'
+import { isNonPhrasingTag } from 'web/compiler/util'
+
+// Regular Expressions for parsing tags and attributes
+const singleAttrIdentifier = /([^\s"'<>/=]+)/
+const singleAttrAssign = /(?:=)/
+const singleAttrValues = [
+  // attr value double quotes
+  /"([^"]*)"+/.source,
+  // attr value, single quotes
+  /'([^']*)'+/.source,
+  // attr value, no quotes
+  /([^\s"'=<>`]+)/.source
+]
+const attribute = new RegExp(
+  '^\\s*' + singleAttrIdentifier.source +
+  '(?:\\s*(' + singleAttrAssign.source + ')' +
+  '\\s*(?:' + singleAttrValues.join('|') + '))?'
+)
+
+// could use https://www.w3.org/TR/1999/REC-xml-names-19990114/#NT-QName
+// but for Vue templates we can enforce a simple charset
+const ncname = '[a-zA-Z_][\\w\\-\\.]*'
+const qnameCapture = '((?:' + ncname + '\\:)?' + ncname + ')'
+const startTagOpen = new RegExp('^<' + qnameCapture)
+const startTagClose = /^\s*(\/?)>/
+const endTag = new RegExp('^<\\/' + qnameCapture + '[^>]*>')
+const doctype = /^<!DOCTYPE [^>]+>/i
+const comment = /^<!--/
+const conditionalComment = /^<!\[/
+
+let IS_REGEX_CAPTURING_BROKEN = false
+'x'.replace(/x(.)?/g, function (m, g) {
+  IS_REGEX_CAPTURING_BROKEN = g === ''
+})
+
+// Special Elements (can contain anything)
+export const isPlainTextElement = makeMap('script,style,textarea', true)
+const reCache = {}
+
+const decodingMap = {
+  '&lt;': '<',
+  '&gt;': '>',
+  '&quot;': '"',
+  '&amp;': '&',
+  '&#10;': '\n'
+}
+const encodedAttr = /&(?:lt|gt|quot|amp);/g
+const encodedAttrWithNewLines = /&(?:lt|gt|quot|amp|#10);/g
+
+function decodeAttr (value, shouldDecodeNewlines) {
+  const re = shouldDecodeNewlines ? encodedAttrWithNewLines : encodedAttr
+  return value.replace(re, match => decodingMap[match])
+}
+
+export function parseHTML (html, options) {
+  const stack = []
+  const expectHTML = options.expectHTML
+  const isUnaryTag = options.isUnaryTag || no
+  const canBeLeftOpenTag = options.canBeLeftOpenTag || no
+  let index = 0
+  let last, lastTag
+  while (html) {
+    last = html
+    // Make sure we're not in a plaintext content element like script/style
+    if (!lastTag || !isPlainTextElement(lastTag)) {
+      let textEnd = html.indexOf('<')
+      if (textEnd === 0) {
+        // Comment:
+        if (comment.test(html)) {
+          const commentEnd = html.indexOf('-->')
+
+          if (commentEnd >= 0) {
+            advance(commentEnd + 3)
+            continue
+          }
+        }
+
+        // http://en.wikipedia.org/wiki/Conditional_comment#Downlevel-revealed_conditional_comment
+        if (conditionalComment.test(html)) {
+          const conditionalEnd = html.indexOf(']>')
+
+          if (conditionalEnd >= 0) {
+            advance(conditionalEnd + 2)
+            continue
+          }
+        }
+
+        // Doctype:
+        const doctypeMatch = html.match(doctype)
+        if (doctypeMatch) {
+          advance(doctypeMatch[0].length)
+          continue
+        }
+
+        // End tag:
+        const endTagMatch = html.match(endTag)
+        if (endTagMatch) {
+          const curIndex = index
+          advance(endTagMatch[0].length)
+          parseEndTag(endTagMatch[1], curIndex, index)
+          continue
+        }
+
+        // Start tag:
+        const startTagMatch = parseStartTag()
+        if (startTagMatch) {
+          handleStartTag(startTagMatch)
+          continue
+        }
+      }
+
+      let text, rest, next
+      if (textEnd >= 0) {
+        rest = html.slice(textEnd)
+        while (
+          !endTag.test(rest) &&
+          !startTagOpen.test(rest) &&
+          !comment.test(rest) &&
+          !conditionalComment.test(rest)
+        ) {
+          // < in plain text, be forgiving and treat it as text
+          next = rest.indexOf('<', 1)
+          if (next < 0) break
+          textEnd += next
+          rest = html.slice(textEnd)
+        }
+        text = html.substring(0, textEnd)
+        advance(textEnd)
+      }
+
+      if (textEnd < 0) {
+        text = html
+        html = ''
+      }
+
+      if (options.chars && text) {
+        options.chars(text)
+      }
+    } else {
+      var stackedTag = lastTag.toLowerCase()
+      var reStackedTag = reCache[stackedTag] || (reCache[stackedTag] = new RegExp('([\\s\\S]*?)(</' + stackedTag + '[^>]*>)', 'i'))
+      var endTagLength = 0
+      var rest = html.replace(reStackedTag, function (all, text, endTag) {
+        endTagLength = endTag.length
+        if (!isPlainTextElement(stackedTag) && stackedTag !== 'noscript') {
+          text = text
+            .replace(/<!--([\s\S]*?)-->/g, '$1')
+            .replace(/<!\[CDATA\[([\s\S]*?)]]>/g, '$1')
+        }
+        if (options.chars) {
+          options.chars(text)
+        }
+        return ''
+      })
+      index += html.length - rest.length
+      html = rest
+      parseEndTag(stackedTag, index - endTagLength, index)
+    }
+
+    if (html === last) {
+      options.chars && options.chars(html)
+      if (process.env.NODE_ENV !== 'production' && !stack.length && options.warn) {
+        options.warn(`Mal-formatted tag at end of template: "${html}"`)
+      }
+      break
+    }
+  }
+
+  // Clean up any remaining tags
+  parseEndTag()
+
+  function advance (n) {
+    index += n
+    html = html.substring(n)
+  }
+
+  function parseStartTag () {
+    const start = html.match(startTagOpen)
+    if (start) {
+      const match = {
+        tagName: start[1],
+        attrs: [],
+        start: index
+      }
+      advance(start[0].length)
+      let end, attr
+      while (!(end = html.match(startTagClose)) && (attr = html.match(attribute))) {
+        advance(attr[0].length)
+        match.attrs.push(attr)
+      }
+      if (end) {
+        match.unarySlash = end[1]
+        advance(end[0].length)
+        match.end = index
+        return match
+      }
+    }
+  }
+
+  function handleStartTag (match) {
+    const tagName = match.tagName
+    const unarySlash = match.unarySlash
+
+    if (expectHTML) {
+      if (lastTag === 'p' && isNonPhrasingTag(tagName)) {
+        parseEndTag(lastTag)
+      }
+      if (canBeLeftOpenTag(tagName) && lastTag === tagName) {
+        parseEndTag(tagName)
+      }
+    }
+
+    const unary = isUnaryTag(tagName) || tagName === 'html' && lastTag === 'head' || !!unarySlash
+
+    const l = match.attrs.length
+    const attrs = new Array(l)
+    for (let i = 0; i < l; i++) {
+      const args = match.attrs[i]
+      // hackish work around FF bug https://bugzilla.mozilla.org/show_bug.cgi?id=369778
+      if (IS_REGEX_CAPTURING_BROKEN && args[0].indexOf('""') === -1) {
+        if (args[3] === '') { delete args[3] }
+        if (args[4] === '') { delete args[4] }
+        if (args[5] === '') { delete args[5] }
+      }
+      const value = args[3] || args[4] || args[5] || ''
+      attrs[i] = {
+        name: args[1],
+        value: decodeAttr(
+          value,
+          options.shouldDecodeNewlines
+        )
+      }
+    }
+
+    if (!unary) {
+      stack.push({ tag: tagName, lowerCasedTag: tagName.toLowerCase(), attrs: attrs })
+      lastTag = tagName
+    }
+
+    if (options.start) {
+      options.start(tagName, attrs, unary, match.start, match.end)
+    }
+  }
+
+  function parseEndTag (tagName, start, end) {
+    let pos, lowerCasedTagName
+    if (start == null) start = index
+    if (end == null) end = index
+
+    if (tagName) {
+      lowerCasedTagName = tagName.toLowerCase()
+    }
+
+    // Find the closest opened tag of the same type
+    if (tagName) {
+      for (pos = stack.length - 1; pos >= 0; pos--) {
+        if (stack[pos].lowerCasedTag === lowerCasedTagName) {
+          break
+        }
+      }
+    } else {
+      // If no tag name is provided, clean shop
+      pos = 0
+    }
+
+    if (pos >= 0) {
+      // Close all the open elements, up the stack
+      for (let i = stack.length - 1; i >= pos; i--) {
+        if (process.env.NODE_ENV !== 'production' &&
+          (i > pos || !tagName) &&
+          options.warn
+        ) {
+          options.warn(
+            `tag <${stack[i].tag}> has no matching end tag.`
+          )
+        }
+        if (options.end) {
+          options.end(stack[i].tag, start, end)
+        }
+      }
+
+      // Remove the open elements from the stack
+      stack.length = pos
+      lastTag = pos && stack[pos - 1].tag
+    } else if (lowerCasedTagName === 'br') {
+      if (options.start) {
+        options.start(tagName, [], true, start, end)
+      }
+    } else if (lowerCasedTagName === 'p') {
+      if (options.start) {
+        options.start(tagName, [], false, start, end)
+      }
+      if (options.end) {
+        options.end(tagName, start, end)
+      }
+    }
+  }
+}

node_modules/vue/src/compiler/parser/index.js

@@ -0,0 +1,593 @@
+/* @flow */
+
+import { decode } from 'he'
+import { parseHTML } from './html-parser'
+import { parseText } from './text-parser'
+import { parseFilters } from './filter-parser'
+import { cached, no, camelize } from 'shared/util'
+import { genAssignmentCode } from '../directives/model'
+import { isIE, isEdge, isServerRendering } from 'core/util/env'
+
+import {
+  addProp,
+  addAttr,
+  baseWarn,
+  addHandler,
+  addDirective,
+  getBindingAttr,
+  getAndRemoveAttr,
+  pluckModuleFunction
+} from '../helpers'
+
+export const onRE = /^@|^v-on:/
+export const dirRE = /^v-|^@|^:/
+export const forAliasRE = /(.*?)\s+(?:in|of)\s+(.*)/
+export const forIteratorRE = /\((\{[^}]*\}|[^,]*),([^,]*)(?:,([^,]*))?\)/
+
+const argRE = /:(.*)$/
+const bindRE = /^:|^v-bind:/
+const modifierRE = /\.[^.]+/g
+
+const decodeHTMLCached = cached(decode)
+
+// configurable state
+export let warn
+let delimiters
+let transforms
+let preTransforms
+let postTransforms
+let platformIsPreTag
+let platformMustUseProp
+let platformGetTagNamespace
+
+/**
+ * Convert HTML string to AST.
+ */
+export function parse (
+  template: string,
+  options: CompilerOptions
+): ASTElement | void {
+  warn = options.warn || baseWarn
+  platformGetTagNamespace = options.getTagNamespace || no
+  platformMustUseProp = options.mustUseProp || no
+  platformIsPreTag = options.isPreTag || no
+  preTransforms = pluckModuleFunction(options.modules, 'preTransformNode')
+  transforms = pluckModuleFunction(options.modules, 'transformNode')
+  postTransforms = pluckModuleFunction(options.modules, 'postTransformNode')
+  delimiters = options.delimiters
+
+  const stack = []
+  const preserveWhitespace = options.preserveWhitespace !== false
+  let root
+  let currentParent
+  let inVPre = false
+  let inPre = false
+  let warned = false
+
+  function warnOnce (msg) {
+    if (!warned) {
+      warned = true
+      warn(msg)
+    }
+  }
+
+  function endPre (element) {
+    // check pre state
+    if (element.pre) {
+      inVPre = false
+    }
+    if (platformIsPreTag(element.tag)) {
+      inPre = false
+    }
+  }
+
+  parseHTML(template, {
+    warn,
+    expectHTML: options.expectHTML,
+    isUnaryTag: options.isUnaryTag,
+    canBeLeftOpenTag: options.canBeLeftOpenTag,
+    shouldDecodeNewlines: options.shouldDecodeNewlines,
+    start (tag, attrs, unary) {
+      // check namespace.
+      // inherit parent ns if there is one
+      const ns = (currentParent && currentParent.ns) || platformGetTagNamespace(tag)
+
+      // handle IE svg bug
+      /* istanbul ignore if */
+      if (isIE && ns === 'svg') {
+        attrs = guardIESVGBug(attrs)
+      }
+
+      const element: ASTElement = {
+        type: 1,
+        tag,
+        attrsList: attrs,
+        attrsMap: makeAttrsMap(attrs),
+        parent: currentParent,
+        children: []
+      }
+      if (ns) {
+        element.ns = ns
+      }
+
+      if (isForbiddenTag(element) && !isServerRendering()) {
+        element.forbidden = true
+        process.env.NODE_ENV !== 'production' && warn(
+          'Templates should only be responsible for mapping the state to the ' +
+          'UI. Avoid placing tags with side-effects in your templates, such as ' +
+          `<${tag}>` + ', as they will not be parsed.'
+        )
+      }
+
+      // apply pre-transforms
+      for (let i = 0; i < preTransforms.length; i++) {
+        preTransforms[i](element, options)
+      }
+
+      if (!inVPre) {
+        processPre(element)
+        if (element.pre) {
+          inVPre = true
+        }
+      }
+      if (platformIsPreTag(element.tag)) {
+        inPre = true
+      }
+      if (inVPre) {
+        processRawAttrs(element)
+      } else {
+        processFor(element)
+        processIf(element)
+        processOnce(element)
+        processKey(element)
+
+        // determine whether this is a plain element after
+        // removing structural attributes
+        element.plain = !element.key && !attrs.length
+
+        processRef(element)
+        processSlot(element)
+        processComponent(element)
+        for (let i = 0; i < transforms.length; i++) {
+          transforms[i](element, options)
+        }
+        processAttrs(element)
+      }
+
+      function checkRootConstraints (el) {
+        if (process.env.NODE_ENV !== 'production') {
+          if (el.tag === 'slot' || el.tag === 'template') {
+            warnOnce(
+              `Cannot use <${el.tag}> as component root element because it may ` +
+              'contain multiple nodes.'
+            )
+          }
+          if (el.attrsMap.hasOwnProperty('v-for')) {
+            warnOnce(
+              'Cannot use v-for on stateful component root element because ' +
+              'it renders multiple elements.'
+            )
+          }
+        }
+      }
+
+      // tree management
+      if (!root) {
+        root = element
+        checkRootConstraints(root)
+      } else if (!stack.length) {
+        // allow root elements with v-if, v-else-if and v-else
+        if (root.if && (element.elseif || element.else)) {
+          checkRootConstraints(element)
+          addIfCondition(root, {
+            exp: element.elseif,
+            block: element
+          })
+        } else if (process.env.NODE_ENV !== 'production') {
+          warnOnce(
+            `Component template should contain exactly one root element. ` +
+            `If you are using v-if on multiple elements, ` +
+            `use v-else-if to chain them instead.`
+          )
+        }
+      }
+      if (currentParent && !element.forbidden) {
+        if (element.elseif || element.else) {
+          processIfConditions(element, currentParent)
+        } else if (element.slotScope) { // scoped slot
+          currentParent.plain = false
+          const name = element.slotTarget || '"default"'
+          ;(currentParent.scopedSlots || (currentParent.scopedSlots = {}))[name] = element
+        } else {
+          currentParent.children.push(element)
+          element.parent = currentParent
+        }
+      }
+      if (!unary) {
+        currentParent = element
+        stack.push(element)
+      } else {
+        endPre(element)
+      }
+      // apply post-transforms
+      for (let i = 0; i < postTransforms.length; i++) {
+        postTransforms[i](element, options)
+      }
+    },
+
+    end () {
+      // remove trailing whitespace
+      const element = stack[stack.length - 1]
+      const lastNode = element.children[element.children.length - 1]
+      if (lastNode && lastNode.type === 3 && lastNode.text === ' ' && !inPre) {
+        element.children.pop()
+      }
+      // pop stack
+      stack.length -= 1
+      currentParent = stack[stack.length - 1]
+      endPre(element)
+    },
+
+    chars (text: string) {
+      if (!currentParent) {
+        if (process.env.NODE_ENV !== 'production') {
+          if (text === template) {
+            warnOnce(
+              'Component template requires a root element, rather than just text.'
+            )
+          } else if ((text = text.trim())) {
+            warnOnce(
+              `text "${text}" outside root element will be ignored.`
+            )
+          }
+        }
+        return
+      }
+      // IE textarea placeholder bug
+      /* istanbul ignore if */
+      if (isIE &&
+        currentParent.tag === 'textarea' &&
+        currentParent.attrsMap.placeholder === text
+      ) {
+        return
+      }
+      const children = currentParent.children
+      text = inPre || text.trim()
+        ? isTextTag(currentParent) ? text : decodeHTMLCached(text)
+        // only preserve whitespace if its not right after a starting tag
+        : preserveWhitespace && children.length ? ' ' : ''
+      if (text) {
+        let expression
+        if (!inVPre && text !== ' ' && (expression = parseText(text, delimiters))) {
+          children.push({
+            type: 2,
+            expression,
+            text
+          })
+        } else if (text !== ' ' || !children.length || children[children.length - 1].text !== ' ') {
+          children.push({
+            type: 3,
+            text
+          })
+        }
+      }
+    }
+  })
+  return root
+}
+
+function processPre (el) {
+  if (getAndRemoveAttr(el, 'v-pre') != null) {
+    el.pre = true
+  }
+}
+
+function processRawAttrs (el) {
+  const l = el.attrsList.length
+  if (l) {
+    const attrs = el.attrs = new Array(l)
+    for (let i = 0; i < l; i++) {
+      attrs[i] = {
+        name: el.attrsList[i].name,
+        value: JSON.stringify(el.attrsList[i].value)
+      }
+    }
+  } else if (!el.pre) {
+    // non root node in pre blocks with no attributes
+    el.plain = true
+  }
+}
+
+function processKey (el) {
+  const exp = getBindingAttr(el, 'key')
+  if (exp) {
+    if (process.env.NODE_ENV !== 'production' && el.tag === 'template') {
+      warn(`<template> cannot be keyed. Place the key on real elements instead.`)
+    }
+    el.key = exp
+  }
+}
+
+function processRef (el) {
+  const ref = getBindingAttr(el, 'ref')
+  if (ref) {
+    el.ref = ref
+    el.refInFor = checkInFor(el)
+  }
+}
+
+function processFor (el) {
+  let exp
+  if ((exp = getAndRemoveAttr(el, 'v-for'))) {
+    const inMatch = exp.match(forAliasRE)
+    if (!inMatch) {
+      process.env.NODE_ENV !== 'production' && warn(
+        `Invalid v-for expression: ${exp}`
+      )
+      return
+    }
+    el.for = inMatch[2].trim()
+    const alias = inMatch[1].trim()
+    const iteratorMatch = alias.match(forIteratorRE)
+    if (iteratorMatch) {
+      el.alias = iteratorMatch[1].trim()
+      el.iterator1 = iteratorMatch[2].trim()
+      if (iteratorMatch[3]) {
+        el.iterator2 = iteratorMatch[3].trim()
+      }
+    } else {
+      el.alias = alias
+    }
+  }
+}
+
+function processIf (el) {
+  const exp = getAndRemoveAttr(el, 'v-if')
+  if (exp) {
+    el.if = exp
+    addIfCondition(el, {
+      exp: exp,
+      block: el
+    })
+  } else {
+    if (getAndRemoveAttr(el, 'v-else') != null) {
+      el.else = true
+    }
+    const elseif = getAndRemoveAttr(el, 'v-else-if')
+    if (elseif) {
+      el.elseif = elseif
+    }
+  }
+}
+
+function processIfConditions (el, parent) {
+  const prev = findPrevElement(parent.children)
+  if (prev && prev.if) {
+    addIfCondition(prev, {
+      exp: el.elseif,
+      block: el
+    })
+  } else if (process.env.NODE_ENV !== 'production') {
+    warn(
+      `v-${el.elseif ? ('else-if="' + el.elseif + '"') : 'else'} ` +
+      `used on element <${el.tag}> without corresponding v-if.`
+    )
+  }
+}
+
+function findPrevElement (children: Array<any>): ASTElement | void {
+  let i = children.length
+  while (i--) {
+    if (children[i].type === 1) {
+      return children[i]
+    } else {
+      if (process.env.NODE_ENV !== 'production' && children[i].text !== ' ') {
+        warn(
+          `text "${children[i].text.trim()}" between v-if and v-else(-if) ` +
+          `will be ignored.`
+        )
+      }
+      children.pop()
+    }
+  }
+}
+
+function addIfCondition (el, condition) {
+  if (!el.ifConditions) {
+    el.ifConditions = []
+  }
+  el.ifConditions.push(condition)
+}
+
+function processOnce (el) {
+  const once = getAndRemoveAttr(el, 'v-once')
+  if (once != null) {
+    el.once = true
+  }
+}
+
+function processSlot (el) {
+  if (el.tag === 'slot') {
+    el.slotName = getBindingAttr(el, 'name')
+    if (process.env.NODE_ENV !== 'production' && el.key) {
+      warn(
+        `\`key\` does not work on <slot> because slots are abstract outlets ` +
+        `and can possibly expand into multiple elements. ` +
+        `Use the key on a wrapping element instead.`
+      )
+    }
+  } else {
+    const slotTarget = getBindingAttr(el, 'slot')
+    if (slotTarget) {
+      el.slotTarget = slotTarget === '""' ? '"default"' : slotTarget
+    }
+    if (el.tag === 'template') {
+      el.slotScope = getAndRemoveAttr(el, 'scope')
+    }
+  }
+}
+
+function processComponent (el) {
+  let binding
+  if ((binding = getBindingAttr(el, 'is'))) {
+    el.component = binding
+  }
+  if (getAndRemoveAttr(el, 'inline-template') != null) {
+    el.inlineTemplate = true
+  }
+}
+
+function processAttrs (el) {
+  const list = el.attrsList
+  let i, l, name, rawName, value, modifiers, isProp
+  for (i = 0, l = list.length; i < l; i++) {
+    name = rawName = list[i].name
+    value = list[i].value
+    if (dirRE.test(name)) {
+      // mark element as dynamic
+      el.hasBindings = true
+      // modifiers
+      modifiers = parseModifiers(name)
+      if (modifiers) {
+        name = name.replace(modifierRE, '')
+      }
+      if (bindRE.test(name)) { // v-bind
+        name = name.replace(bindRE, '')
+        value = parseFilters(value)
+        isProp = false
+        if (modifiers) {
+          if (modifiers.prop) {
+            isProp = true
+            name = camelize(name)
+            if (name === 'innerHtml') name = 'innerHTML'
+          }
+          if (modifiers.camel) {
+            name = camelize(name)
+          }
+          if (modifiers.sync) {
+            addHandler(
+              el,
+              `update:${camelize(name)}`,
+              genAssignmentCode(value, `$event`)
+            )
+          }
+        }
+        if (isProp || platformMustUseProp(el.tag, el.attrsMap.type, name)) {
+          addProp(el, name, value)
+        } else {
+          addAttr(el, name, value)
+        }
+      } else if (onRE.test(name)) { // v-on
+        name = name.replace(onRE, '')
+        addHandler(el, name, value, modifiers, false, warn)
+      } else { // normal directives
+        name = name.replace(dirRE, '')
+        // parse arg
+        const argMatch = name.match(argRE)
+        const arg = argMatch && argMatch[1]
+        if (arg) {
+          name = name.slice(0, -(arg.length + 1))
+        }
+        addDirective(el, name, rawName, value, arg, modifiers)
+        if (process.env.NODE_ENV !== 'production' && name === 'model') {
+          checkForAliasModel(el, value)
+        }
+      }
+    } else {
+      // literal attribute
+      if (process.env.NODE_ENV !== 'production') {
+        const expression = parseText(value, delimiters)
+        if (expression) {
+          warn(
+            `${name}="${value}": ` +
+            'Interpolation inside attributes has been removed. ' +
+            'Use v-bind or the colon shorthand instead. For example, ' +
+            'instead of <div id="{{ val }}">, use <div :id="val">.'
+          )
+        }
+      }
+      addAttr(el, name, JSON.stringify(value))
+    }
+  }
+}
+
+function checkInFor (el: ASTElement): boolean {
+  let parent = el
+  while (parent) {
+    if (parent.for !== undefined) {
+      return true
+    }
+    parent = parent.parent
+  }
+  return false
+}
+
+function parseModifiers (name: string): Object | void {
+  const match = name.match(modifierRE)
+  if (match) {
+    const ret = {}
+    match.forEach(m => { ret[m.slice(1)] = true })
+    return ret
+  }
+}
+
+function makeAttrsMap (attrs: Array<Object>): Object {
+  const map = {}
+  for (let i = 0, l = attrs.length; i < l; i++) {
+    if (
+      process.env.NODE_ENV !== 'production' &&
+      map[attrs[i].name] && !isIE && !isEdge
+    ) {
+      warn('duplicate attribute: ' + attrs[i].name)
+    }
+    map[attrs[i].name] = attrs[i].value
+  }
+  return map
+}
+
+// for script (e.g. type="x/template") or style, do not decode content
+function isTextTag (el): boolean {
+  return el.tag === 'script' || el.tag === 'style'
+}
+
+function isForbiddenTag (el): boolean {
+  return (
+    el.tag === 'style' ||
+    (el.tag === 'script' && (
+      !el.attrsMap.type ||
+      el.attrsMap.type === 'text/javascript'
+    ))
+  )
+}
+
+const ieNSBug = /^xmlns:NS\d+/
+const ieNSPrefix = /^NS\d+:/
+
+/* istanbul ignore next */
+function guardIESVGBug (attrs) {
+  const res = []
+  for (let i = 0; i < attrs.length; i++) {
+    const attr = attrs[i]
+    if (!ieNSBug.test(attr.name)) {
+      attr.name = attr.name.replace(ieNSPrefix, '')
+      res.push(attr)
+    }
+  }
+  return res
+}
+
+function checkForAliasModel (el, value) {
+  let _el = el
+  while (_el) {
+    if (_el.for && _el.alias === value) {
+      warn(
+        `<${el.tag} v-model="${value}">: ` +
+        `You are binding v-model directly to a v-for iteration alias. ` +
+        `This will not be able to modify the v-for source array because ` +
+        `writing to the alias is like modifying a function local variable. ` +
+        `Consider using an array of objects and use v-model on an object property instead.`
+      )
+    }
+    _el = _el.parent
+  }
+}

node_modules/vue/src/compiler/parser/text-parser.js

@@ -0,0 +1,41 @@
+/* @flow */
+
+import { cached } from 'shared/util'
+import { parseFilters } from './filter-parser'
+
+const defaultTagRE = /\{\{((?:.|\n)+?)\}\}/g
+const regexEscapeRE = /[-.*+?^${}()|[\]\/\\]/g
+
+const buildRegex = cached(delimiters => {
+  const open = delimiters[0].replace(regexEscapeRE, '\\$&')
+  const close = delimiters[1].replace(regexEscapeRE, '\\$&')
+  return new RegExp(open + '((?:.|\\n)+?)' + close, 'g')
+})
+
+export function parseText (
+  text: string,
+  delimiters?: [string, string]
+): string | void {
+  const tagRE = delimiters ? buildRegex(delimiters) : defaultTagRE
+  if (!tagRE.test(text)) {
+    return
+  }
+  const tokens = []
+  let lastIndex = tagRE.lastIndex = 0
+  let match, index
+  while ((match = tagRE.exec(text))) {
+    index = match.index
+    // push text token
+    if (index > lastIndex) {
+      tokens.push(JSON.stringify(text.slice(lastIndex, index)))
+    }
+    // tag token
+    const exp = parseFilters(match[1].trim())
+    tokens.push(`_s(${exp})`)
+    lastIndex = index + match[0].length
+  }
+  if (lastIndex < text.length) {
+    tokens.push(JSON.stringify(text.slice(lastIndex)))
+  }
+  return tokens.join('+')
+}