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forked fromvuejs/vue

Commit2a1ce0d

Browse files
Hanks10100yyx990803
authored andcommitted
feat($compiler): supports compiling v-else-if and v-else to the weex native directive
1 parent2d09ee3 commit2a1ce0d

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3 files changed

+45
-8
lines changed

3 files changed

+45
-8
lines changed

‎src/platforms/weex/compiler/modules/recycle-list/index.js

Lines changed: 3 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -7,15 +7,15 @@ import { transformVFor } from './v-for'
77

88
letcurrentRecycleList=null
99

10-
functionpreTransformNode(el:ASTElement){
10+
functionpreTransformNode(el:ASTElement,options:CompilerOptions){
1111
if(el.tag==='recycle-list'){
1212
currentRecycleList=el
1313
}
1414
if(currentRecycleList){
1515
// TODO
1616
transformVBind(el)
17-
transformVIf(el)
18-
transformVFor(el)
17+
transformVIf(el,options)// and v-else-if and v-else
18+
transformVFor(el,options)
1919
}
2020
}
2121

‎src/platforms/weex/compiler/modules/recycle-list/v-for.js

Lines changed: 3 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -3,7 +3,7 @@
33
import{forAliasRE,forIteratorRE}from'compiler/parser/index'
44
import{getAndRemoveAttr}from'compiler/helpers'
55

6-
exportfunctiontransformVFor(el:ASTElement){
6+
exportfunctiontransformVFor(el:ASTElement,options:CompilerOptions){
77
constexp=getAndRemoveAttr(el,'v-for')
88
if(!exp){
99
return
@@ -27,5 +27,7 @@ export function transformVFor (el: ASTElement) {
2727
deleteel.attrsMap['v-for']
2828
el.attrsMap['[[repeat]]']=desc
2929
el.attrsList.push({name:'[[repeat]]',value:desc})
30+
}elseif(process.env.NODE_ENV!=='production'&&options.warn){
31+
options.warn(`Invalid v-for expression:${exp}`)
3032
}
3133
}

‎src/platforms/weex/compiler/modules/recycle-list/v-if.js

Lines changed: 39 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -2,12 +2,47 @@
22

33
import{getAndRemoveAttr}from'compiler/helpers'
44

5-
exportfunctiontransformVIf(el:ASTElement){
6-
constexp=getAndRemoveAttr(el,'v-if')
7-
if(exp){
5+
functionhasConditionDirective(el:ASTElement):boolean{
6+
for(constattrinel.attrsMap){
7+
if(/^v\-if|v\-else|v\-else\-if$/.test(attr)){
8+
returntrue
9+
}
10+
}
11+
returnfalse
12+
}
13+
14+
functiongetPrevMatch(el:ASTElement):any{
15+
if(el.parent&&el.parent.children){
16+
constprev:Object=el.parent.children[el.parent.children.length-1]
17+
returnprev.attrsMap['[[match]]']
18+
}
19+
}
20+
21+
exportfunctiontransformVIf(el:ASTElement,options:CompilerOptions){
22+
if(hasConditionDirective(el)){
23+
letexp
24+
constifExp=getAndRemoveAttr(el,'v-if')
25+
constelseifExp=getAndRemoveAttr(el,'v-else-if')
26+
if(ifExp){
27+
exp=ifExp
28+
}else{
29+
constprevMatch=getPrevMatch(el)
30+
if(prevMatch){
31+
exp=elseifExp
32+
?`!(${prevMatch}) && (${elseifExp})`// v-else-if
33+
:`!(${prevMatch})`// v-else
34+
}elseif(process.env.NODE_ENV!=='production'&&options.warn){
35+
options.warn(
36+
`v-${elseifExp ?('else-if="'+elseifExp+'"') :'else'} `+
37+
`used on element <${el.tag}> without corresponding v-if.`
38+
)
39+
return
40+
}
41+
}
842
el.attrsMap['[[match]]']=exp
943
el.attrsList.push({name:'[[match]]',value:exp})
1044
deleteel.attrsMap['v-if']
45+
deleteel.attrsMap['v-else-if']
46+
deleteel.attrsMap['v-else']
1147
}
12-
// TODO: support v-else and v-else-if
1348
}

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