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{"version":3,"names":["_t","require","traverseFast","VISITOR_KEYS","TokenMap","constructor","ast","tokens","source","_tokens","_source","_nodesToTokenIndexes","Map","_nodesOccurrencesCountCache","_tokensCache","node","indexes","_getTokensIndexesOfNode","length","set","has","getIndexes","get","find","condition","k","index","tok","findLastIndex","findMatching","test","occurrenceCount","i","count","cache","matchesOriginal","token","end","start","value","startsWith","startMatches","endMatches","first","last","_findTokensOfNode","low","children","childrenIterator","type","declaration","next","child","childTok","high","push","cached","_findFirstTokenOfNode","_findLastTokenOfNode","mid","exports","quasis","expressions","keys","key","Array","isArray"],"sources":["../src/token-map.ts"],"sourcesContent":["import type * as t from \"@babel/types\";\nimport type { Token } from \"@babel/parser\";\n\nimport { traverseFast, VISITOR_KEYS } from \"@babel/types\";\n\nexport class TokenMap {\n  _tokens: Token[];\n  _source: string;\n\n  _nodesToTokenIndexes: Map<t.Node, number[]> = new Map();\n  _nodesOccurrencesCountCache: Map<\n    t.Node,\n    { test: string; count: number; i: number }\n  > = new Map();\n\n  _tokensCache = new Map<t.Node, { first: number; last: number }>();\n\n  constructor(ast: t.Node, tokens: Token[], source: string) {\n    this._tokens = tokens;\n    this._source = source;\n\n    traverseFast(ast, node => {\n      const indexes = this._getTokensIndexesOfNode(node);\n      if (indexes.length > 0) this._nodesToTokenIndexes.set(node, indexes);\n    });\n\n    this._tokensCache = null;\n  }\n\n  has(node: t.Node): boolean {\n    return this._nodesToTokenIndexes.has(node);\n  }\n\n  getIndexes(node: t.Node): readonly number[] | undefined {\n    return this._nodesToTokenIndexes.get(node);\n  }\n\n  find(\n    node: t.Node,\n    condition: (token: Token, index: number) => boolean,\n  ): Token | null {\n    const indexes = this._nodesToTokenIndexes.get(node);\n    if (indexes) {\n      for (let k = 0; k < indexes.length; k++) {\n        const index = indexes[k];\n        const tok = this._tokens[index];\n        if (condition(tok, index)) return tok;\n      }\n    }\n    return null;\n  }\n\n  findLastIndex(\n    node: t.Node,\n    condition: (token: Token, index: number) => boolean,\n  ): number {\n    const indexes = this._nodesToTokenIndexes.get(node);\n    if (indexes) {\n      for (let k = indexes.length - 1; k >= 0; k--) {\n        const index = indexes[k];\n        const tok = this._tokens[index];\n        if (condition(tok, index)) return index;\n      }\n    }\n    return -1;\n  }\n\n  findMatching(\n    node: t.Node,\n    test: string,\n    occurrenceCount: number = 0,\n  ): Token | null {\n    const indexes = this._nodesToTokenIndexes.get(node);\n    if (indexes) {\n      let i = 0;\n      const count = occurrenceCount;\n\n      // To avoid O(n^2) search when printing lists (such as arrays), we\n      // cache the last index of a given token for a given occurrence count.\n      // If then we are asked to find the next occurrence of the same token,\n      // we start from the index of the previously found token.\n      // This cache only kicks in after 2 tokens of the same type, to avoid\n      // overhead in the simple case of having unique tokens per node.\n      if (count > 1) {\n        const cache = this._nodesOccurrencesCountCache.get(node);\n        if (cache && cache.test === test && cache.count < count) {\n          i = cache.i + 1;\n          occurrenceCount -= cache.count + 1;\n        }\n      }\n\n      for (; i < indexes.length; i++) {\n        const tok = this._tokens[indexes[i]];\n        if (this.matchesOriginal(tok, test)) {\n          if (occurrenceCount === 0) {\n            if (count > 0) {\n              this._nodesOccurrencesCountCache.set(node, { test, count, i });\n            }\n            return tok;\n          }\n          occurrenceCount--;\n        }\n      }\n    }\n    return null;\n  }\n\n  matchesOriginal(token: Token, test: string) {\n    if (token.end - token.start !== test.length) return false;\n    if (token.value != null) return token.value === test;\n    return this._source.startsWith(test, token.start);\n  }\n\n  startMatches(node: t.Node, test: string): boolean {\n    const indexes = this._nodesToTokenIndexes.get(node);\n    if (!indexes) return false;\n    const tok = this._tokens[indexes[0]];\n    if (tok.start !== node.start) return false;\n    return this.matchesOriginal(tok, test);\n  }\n\n  endMatches(node: t.Node, test: string): boolean {\n    const indexes = this._nodesToTokenIndexes.get(node);\n    if (!indexes) return false;\n    const tok = this._tokens[indexes[indexes.length - 1]];\n    if (tok.end !== node.end) return false;\n    return this.matchesOriginal(tok, test);\n  }\n\n  _getTokensIndexesOfNode(node: t.Node): number[] {\n    if (node.start == null || node.end == null) return [];\n\n    const { first, last } = this._findTokensOfNode(\n      node,\n      0,\n      this._tokens.length - 1,\n    );\n\n    let low = first;\n\n    const children = childrenIterator(node);\n\n    if (\n      (node.type === \"ExportNamedDeclaration\" ||\n        node.type === \"ExportDefaultDeclaration\") &&\n      node.declaration &&\n      node.declaration.type === \"ClassDeclaration\"\n    ) {\n      // Exported class declarations can be not properly nested inside\n      // the export declaration that contains them. For example, in\n      // `@dec export class Foo {}` the `export` is covered by the\n      // ClassDeclaration range. Skip the class declaration from the list\n      // of children to skip, so that when looking for `export` we also\n      // traverse its tokens.\n      children.next();\n    }\n\n    const indexes = [];\n\n    for (const child of children) {\n      if (child == null) continue;\n      if (child.start == null || child.end == null) continue;\n\n      const childTok = this._findTokensOfNode(child, low, last);\n\n      const high = childTok.first;\n      for (let k = low; k < high; k++) indexes.push(k);\n\n      low = childTok.last + 1;\n    }\n\n    for (let k = low; k <= last; k++) indexes.push(k);\n\n    return indexes;\n  }\n\n  _findTokensOfNode(node: t.Node, low: number, high: number) {\n    const cached = this._tokensCache.get(node);\n    if (cached) return cached;\n\n    const first = this._findFirstTokenOfNode(node.start, low, high);\n    const last = this._findLastTokenOfNode(node.end, first, high);\n\n    this._tokensCache.set(node, { first, last });\n    return { first, last 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