48 lines
1.4 KiB
JavaScript
48 lines
1.4 KiB
JavaScript
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'use strict'
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var directiveParser = require('./directive-parser.js')
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module.exports = {
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stack: [],
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pop: function (current) {
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var index = this.stack.indexOf(current)
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if (index !== -1) {
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this.stack.splice(index, 1)
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}
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if (!current.preserve) {
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current.source.remove()
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}
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},
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parse: function (node, lazyResult, callback) {
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var current
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var metadata = directiveParser(node)
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if (metadata) {
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if (!metadata.begin && metadata.end) {
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this.walk(function (item) {
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if (metadata.name === item.metadata.name) {
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this.pop(item)
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current = {'metadata': metadata, 'directive': item.directive, 'source': node, 'preserve': item.preserve}
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return false
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}
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}.bind(this))
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} else {
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current = {'metadata': metadata, 'directive': null, 'source': node, 'preserve': null}
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}
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if (current === undefined) {
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lazyResult.warn('found end "' + metadata.name + '" without a matching begin.', {node: node})
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} else if (callback(current)) {
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this.stack.push(current)
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} else if (!current.preserve) {
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current.source.remove()
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}
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}
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},
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walk: function (callback) {
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var len = this.stack.length
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while (--len > -1) {
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if (!callback(this.stack[len])) {
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break
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}
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}
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}
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}
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