/* @flow */
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import { parseText } from 'compiler/parser/text-parser'
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import {
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getAndRemoveAttr,
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getBindingAttr,
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baseWarn
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} from 'compiler/helpers'
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function transformNode (el: ASTElement, options: CompilerOptions) {
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const warn = options.warn || baseWarn
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const staticClass = getAndRemoveAttr(el, 'class')
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if (process.env.NODE_ENV !== 'production' && staticClass) {
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const res = parseText(staticClass, options.delimiters)
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if (res) {
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warn(
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`class="${staticClass}": ` +
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'Interpolation inside attributes has been removed. ' +
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'Use v-bind or the colon shorthand instead. For example, ' +
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'instead of <div class="{{ val }}">, use <div :class="val">.',
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el.rawAttrsMap['class']
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)
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}
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}
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if (staticClass) {
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el.staticClass = JSON.stringify(staticClass)
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}
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const classBinding = getBindingAttr(el, 'class', false /* getStatic */)
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if (classBinding) {
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el.classBinding = classBinding
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}
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}
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function genData (el: ASTElement): string {
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let data = ''
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if (el.staticClass) {
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data += `staticClass:${el.staticClass},`
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}
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if (el.classBinding) {
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data += `class:${el.classBinding},`
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}
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return data
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}
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export default {
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staticKeys: ['staticClass'],
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transformNode,
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genData
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}
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