const Liquid = require('..')
module.exports = function (liquid) {
liquid.registerTag('if', {
parse: function (tagToken, remainTokens) {
this.branches = []
this.elseTemplates = []
var p
var stream = liquid.parser.parseStream(remainTokens)
.on('start', () => this.branches.push({
cond: tagToken.args,
templates: (p = [])
}))
.on('tag:elsif', token => {
this.branches.push({
cond: token.args,
templates: p = []
})
})
.on('tag:else', () => (p = this.elseTemplates))
.on('tag:endif', token => stream.stop())
.on('template', tpl => p.push(tpl))
.on('end', x => {
throw new Error(`tag ${tagToken.raw} not closed`)
})
stream.start()
},
render: function (scope, hash) {
for (var i = 0; i < this.branches.length; i++) {
var branch = this.branches[i]
var cond = Liquid.evalExp(branch.cond, scope)
if (Liquid.isTruthy(cond)) {
return liquid.renderer.renderTemplates(branch.templates, scope)
}
}
return liquid.renderer.renderTemplates(this.elseTemplates, scope)
}
})
}
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