import Foundation
let pattern = #"(?:(?:import|export)[^`'"]*from\s+[`'"])(?<from>[^`'"./][^`'"]*)(?:[`'"])|(?:\bimport)(?:\s+|\s*\(\s*)(?:[`'"])(?<plain>[^`'"./][^`'"]*)(?:[`'"])"#
let regex = try! NSRegularExpression(pattern: pattern, options: .anchorsMatchLines)
let testString = #"""
import { defaultTemplateProcessor } from './lib/default-template-processor.js';
import { SVGTemplateResult, TemplateResult } from './lib/template-result.js';
export { DefaultTemplateProcessor, defaultTemplateProcessor } from './lib/default-template-processor.js';
export { directive, isDirective } from './lib/directive.js';
export { removeNodes, reparentNodes } from './lib/dom.js';
export { noChange, nothing } from './lib/part.js';
export { AttributeCommitter, AttributePart, BooleanAttributePart, EventPart, isIterable, isPrimitive, NodePart, PropertyCommitter, PropertyPart } from './lib/parts.js';
export { parts, render } from './lib/render.js';
export { templateCaches, templateFactory } from './lib/template-factory.js';
export { TemplateInstance } from './lib/template-instance.js';
export { SVGTemplateResult, TemplateResult } from './lib/template-result.js';
export { createMarker, isTemplatePartActive, Template } from './lib/template.js';
import { render } from 'lit-html/lib/shady-render.js';
import { UpdatingElement } from './lib/updating-element.js';
export * from './lib/updating-element.js';
export * from './lib/decorators.js';
export { html, svg, TemplateResult, SVGTemplateResult } from 'lit-html/lit-html.js';
import { supportsAdoptingStyleSheets } from './lib/css-tag.js';
export * from './lib/css-tag.js';
import { LitElement } from 'lit-element';
import { IronMeta } from '@polymer/iron-meta/iron-meta.js';
import { whenOnline } from 'hadron-core/lib/utils/async.js';
import { apiUrl, apiVersion } from '../../src/config.js';
import { importModule, dynamicImportAvailable } from '../../src/dynamic-imports-polyfill.js';
import observeProperties from 'hadron-core/lib/utils/object-property-observer.js';
export { version };
import { ElementMixin, version } from './lib/mixins/element-mixin.js';
export { html } from './lib/utils/html-tag.js';
class Foo {
constructor() {
import(`foo.js`);
import(`${foo}`);
import('bar.js');
}
}
"""#
let stringRange = NSRange(location: 0, length: testString.utf16.count)
let matches = regex.matches(in: testString, range: stringRange)
var result: [[String]] = []
for match in matches {
var groups: [String] = []
for rangeIndex in 1 ..< match.numberOfRanges {
let nsRange = match.range(at: rangeIndex)
guard !NSEqualRanges(nsRange, NSMakeRange(NSNotFound, 0)) else { continue }
let string = (testString as NSString).substring(with: nsRange)
groups.append(string)
}
if !groups.isEmpty {
result.append(groups)
}
}
print(result)
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Swift 5.2, please visit: https://developer.apple.com/documentation/foundation/nsregularexpression