Function resolveFile

lib/web/tern/tern.js:429–492

(srv, localFiles, name)

  }

  function resolveFile(srv, localFiles, name) {
    var isRef = name.match(/^#(\d+)$/);
    if (!isRef) return srv.findFile(name);

    var file = localFiles[isRef[1]];
    if (!file || file.type == "delete") throw ternError("Reference to unknown file " + name);
    if (file.type == "full") return srv.fileMap[file.name];

    // This is a partial file

    var realFile = file.backing = srv.fileMap[file.name];
    var offset = file.offset;
    if (file.offsetLines) offset = {line: file.offsetLines, ch: 0};
    file.offset = offset = resolvePos(realFile, file.offsetLines == null ? file.offset : {line: file.offsetLines, ch: 0}, true);
    var line = firstLine(file.text);
    var foundPos = findMatchingPosition(line, realFile.text, offset);
    var pos = foundPos == null ? Math.max(0, realFile.text.lastIndexOf("\n", offset)) : foundPos;
    var inObject, atFunction;

    infer.withContext(srv.cx, function() {
      infer.purge(file.name, pos, pos + file.text.length);

      var text = file.text, m;
      if (m = text.match(/(?:"([^"]*)"|([\w$]+))\s*:\s*function\b/)) {
        var objNode = walk.findNodeAround(file.backing.ast, pos, "ObjectExpression");
        if (objNode && objNode.node.objType)
          inObject = {type: objNode.node.objType, prop: m[2] || m[1]};
      }
      if (foundPos && (m = line.match(/^(.*?)\bfunction\b/))) {
        var cut = m[1].length, white = "";
        for (var i = 0; i < cut; ++i) white += " ";
        file.text = white + text.slice(cut);
        atFunction = true;
      }

      var scopeStart = infer.scopeAt(realFile.ast, pos, realFile.scope);
      var scopeEnd = infer.scopeAt(realFile.ast, pos + text.length, realFile.scope);
      var scope = file.scope = scopeDepth(scopeStart) < scopeDepth(scopeEnd) ? scopeEnd : scopeStart;
      file.ast = parseFile(srv, file)
      infer.analyze(file.ast, file.name, scope);

      // This is a kludge to tie together the function types (if any)
      // outside and inside of the fragment, so that arguments and
      // return values have some information known about them.
      tieTogether: if (inObject || atFunction) {
        var newInner = infer.scopeAt(file.ast, line.length, scopeStart);
        if (!newInner.fnType) break tieTogether;
        if (inObject) {
          var prop = inObject.type.getProp(inObject.prop);
          prop.addType(newInner.fnType);
        } else if (atFunction) {
          var inner = infer.scopeAt(realFile.ast, pos + line.length, realFile.scope);
          if (inner == scopeStart || !inner.fnType) break tieTogether;
          var fOld = inner.fnType, fNew = newInner.fnType;
          if (!fNew || (fNew.name != fOld.name && fOld.name)) break tieTogether;
          for (var i = 0, e = Math.min(fOld.args.length, fNew.args.length); i < e; ++i)
            fOld.args[i].propagate(fNew.args[i]);
          fOld.self.propagate(fNew.self);