Function parse

packages/compiler-sfc/src/parse.ts:107–299

(
  source: string,
  options: SFCParseOptions = {},
)

  | LRUCache<string, SFCParseResult> = createCache<SFCParseResult>()

export function parse(
  source: string,
  options: SFCParseOptions = {},
): SFCParseResult {
  const sourceKey = genCacheKey(source, {
    ...options,
    compiler: { parse: options.compiler?.parse },
  })
  const cache = parseCache.get(sourceKey)
  if (cache) {
    return cache
  }

  const {
    sourceMap = true,
    filename = DEFAULT_FILENAME,
    sourceRoot = '',
    pad = false,
    ignoreEmpty = true,
    compiler = CompilerDOM,
    templateParseOptions = {},
  } = options

  const descriptor: SFCDescriptor = {
    filename,
    source,
    template: null,
    script: null,
    scriptSetup: null,
    styles: [],
    customBlocks: [],
    cssVars: [],
    slotted: false,
    shouldForceReload: prevImports => hmrShouldReload(prevImports, descriptor),
  }

  const errors: (CompilerError | SyntaxError)[] = []
  const ast = compiler.parse(source, {
    parseMode: 'sfc',
    prefixIdentifiers: true,
    ...templateParseOptions,
    onError: e => {
      errors.push(e)
    },
  })
  ast.children.forEach(node => {
    if (node.type !== NodeTypes.ELEMENT) {
      return
    }
    // we only want to keep the nodes that are not empty
    // (when the tag is not a template)
    if (
      ignoreEmpty &&
      node.tag !== 'template' &&
      isEmpty(node) &&
      !hasSrc(node)
    ) {
      return