[weex] Support unary and left open tags (#5052)

* [weex] Support unary and left open tags

* [weex] add test case for unary tag

* [compiler] move canBeLeftOpenTag to compiler option

Author: Hanks10100

Diff for: flow/compiler.js

@@ -5,6 +5,7 @@ declare type CompilerOptions = {
   staticKeys?: string; // a list of AST properties to be considered static; for optimization
   directives?: { [key: string]: Function }; // platform specific directives
   isUnaryTag?: (tag: string) => ?boolean; // check if a tag is unary for the platform
+  canBeLeftOpenTag?: (tag: string) => ?boolean; // check if a tag can be left opened
   isReservedTag?: (tag: string) => ?boolean; // check if a tag is a native for the platform
   mustUseProp?: (tag: string, type: ?string, name: string) => boolean; // check if an attribute should be bound as a property
   isPreTag?: (attr: string) => ?boolean; // check if a tag needs to preserve whitespace

Diff for: src/compiler/parser/html-parser.js

@@ -10,7 +10,7 @@
  */
 
 import { makeMap, no } from 'shared/util'
-import { isNonPhrasingTag, canBeLeftOpenTag } from 'web/compiler/util'
+import { isNonPhrasingTag } from 'web/compiler/util'
 
 // Regular Expressions for parsing tags and attributes
 const singleAttrIdentifier = /([^\s"'<>/=]+)/
@@ -68,6 +68,7 @@ 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) {

Diff for: src/compiler/parser/index.js

@@ -84,6 +84,7 @@ export function parse (
     warn,
     expectHTML: options.expectHTML,
     isUnaryTag: options.isUnaryTag,
+    canBeLeftOpenTag: options.canBeLeftOpenTag,
     shouldDecodeNewlines: options.shouldDecodeNewlines,
     start (tag, attrs, unary) {
       // check namespace.

Diff for: src/entries/web-server-renderer.js

@@ -4,7 +4,7 @@ process.env.VUE_ENV = 'server'
 
 import { createRenderer as _createRenderer } from 'server/create-renderer'
 import { createBundleRendererCreator } from 'server/create-bundle-renderer'
-import { isUnaryTag } from 'web/compiler/util'
+import { isUnaryTag, canBeLeftOpenTag } from 'web/compiler/util'
 import modules from 'web/server/modules/index'
 import baseDirectives from 'web/server/directives/index'
 
@@ -14,6 +14,7 @@ export function createRenderer (options?: Object = {}): {
 } {
   return _createRenderer({
     isUnaryTag,
+    canBeLeftOpenTag,
     modules,
     // user can provide server-side implementations for custom directives
     // when creating the renderer.

Diff for: src/platforms/web/compiler/index.js

@@ -1,6 +1,6 @@
 /* @flow */
 
-import { isUnaryTag } from './util'
+import { isUnaryTag, canBeLeftOpenTag } from './util'
 import { genStaticKeys } from 'shared/util'
 import { createCompiler } from 'compiler/index'
 
@@ -21,6 +21,7 @@ export const baseOptions: CompilerOptions = {
   isPreTag,
   isUnaryTag,
   mustUseProp,
+  canBeLeftOpenTag,
   isReservedTag,
   getTagNamespace,
   staticKeys: genStaticKeys(modules)

Diff for: src/platforms/weex/compiler/index.js

@@ -10,6 +10,7 @@ import {
   isUnaryTag,
   mustUseProp,
   isReservedTag,
+  canBeLeftOpenTag,
   getTagNamespace
 } from '../util/index'
 
@@ -18,6 +19,7 @@ export const baseOptions: CompilerOptions = {
   directives,
   isUnaryTag,
   mustUseProp,
+  canBeLeftOpenTag,
   isReservedTag,
   getTagNamespace,
   preserveWhitespace: false,

Diff for: src/platforms/weex/util/index.js

@@ -3,10 +3,27 @@
 import { makeMap } from 'shared/util'
 
 export const isReservedTag = makeMap(
-  'div,img,image,input,switch,indicator,list,scroller,cell,template,text,slider,image'
+  'template,script,style,element,content,slot,link,meta,svg,view,' +
+  'a,div,img,image,text,span,richtext,input,switch,textarea,spinner,select,' +
+  'slider,slider-neighbor,indicator,trisition,trisition-group,canvas,' +
+  'list,cell,header,loading,loading-indicator,refresh,scrollable,scroller,' +
+  'video,web,embed,tabbar,tabheader,datepicker,timepicker,marquee,countdown',
+  true
+)
+
+// Elements that you can, intentionally, leave open (and which close themselves)
+// more flexable than web
+export const canBeLeftOpenTag = makeMap(
+  'web,spinner,switch,video,textarea,canvas,' +
+  'indicator,marquee,countdown',
+  true
+)
+
+export const isUnaryTag = makeMap(
+  'embed,img,image,input,link,meta',
+  true
 )
 
-export function isUnaryTag () { /* console.log('isUnaryTag') */ }
 export function mustUseProp () { /* console.log('mustUseProp') */ }
 export function getTagNamespace () { /* console.log('getTagNamespace') */ }
 export function isUnknownElement () { /* console.log('isUnknownElement') */ }

Diff for: test/weex/compiler/compile.spec.js

@@ -1,4 +1,5 @@
 import { compile } from '../../../packages/weex-template-compiler'
+import { strToRegExp } from '../helpers/index'
 
 describe('compile basic', () => {
   it('should be compiled', () => {
@@ -29,6 +30,36 @@ describe('compile basic', () => {
     expect(errors).toEqual([])
   })
 
+  it('should compile unary tag', () => {
+    const inputCase = compile(`<div><input><text>abc</text></div>`)
+    expect(inputCase.render).toMatch(strToRegExp(`return _m(0)`))
+    expect(inputCase.staticRenderFns).toMatch(strToRegExp(`_c('div',[_c('input'),_c('text',[_v("abc")])])`))
+    expect(inputCase.errors).toEqual([])
+
+    const imageCase = compile(`<div><image src="path"><text>abc</text></div>`)
+    expect(imageCase.render).toMatch(strToRegExp(`return _m(0)`))
+    expect(imageCase.staticRenderFns).toMatch(strToRegExp(`_c('div',[_c('image',{attrs:{"src":"path"}}),_c('text',[_v("abc")])])`))
+    expect(imageCase.errors).toEqual([])
+
+    const complexCase = compile(`
+      <div>
+        <image src="path">
+        <image></image>
+        <div>
+          <embed>
+          <text>start</text>
+          <input type="text">
+          <input type="url" />
+          <text>end</text>
+        </div>
+      </div>
+    `)
+    expect(complexCase.render).toMatch(strToRegExp(`return _m(0)`))
+    expect(complexCase.staticRenderFns).toMatch(strToRegExp(`_c('image',{attrs:{"src":"path"}}),_c('image'),_c('div'`))
+    expect(complexCase.staticRenderFns).toMatch(strToRegExp(`_c('div',[_c('embed'),_c('text',[_v("start")]),_c('input',{attrs:{"type":"text"}}),_c('input',{attrs:{"type":"url"}}),_c('text',[_v("end")])]`))
+    expect(complexCase.errors).toEqual([])
+  })
+
   it('should compile more complex situation', () => {
     // from examples of https://github.com/alibaba/weex
     const { render, staticRenderFns, errors } = compile(`
@@ -38,7 +69,7 @@ describe('compile basic', () => {
         <text style="margin-left:36px;color:#eee;">Load more...</text>
       </refresh>
     `)
-    expect(render).toEqual(`with(this){return _c('refresh',{staticClass:["refresh"],staticStyle:{flexDirection:"row"},attrs:{"display":displayRefresh},on:{"refresh":handleRefresh}},[_c('loading-indicator'),_c('text',{staticStyle:{marginLeft:"36px",color:"#eee"}},[_v("Load more...")])],1)}`)
+    expect(render).toEqual(`with(this){return _c('refresh',{staticClass:["refresh"],staticStyle:{flexDirection:"row"},attrs:{"display":displayRefresh},on:{"refresh":handleRefresh}},[_c('loading-indicator'),_c('text',{staticStyle:{marginLeft:"36px",color:"#eee"}},[_v("Load more...")])])}`)
     expect(staticRenderFns).toEqual([])
     expect(errors).toEqual([])
   })