Review

6

/home/eko/MUBench/MUBench/checkouts/closure/319/original-src/com/google/javascript/jscomp/GlobalNamespace.java

visit(NodeTraversal, Node, Node)

class GlobalNamespace.BuildGlobalNamespace {
    @Override
    public void visit(NodeTraversal t, Node n, Node parent) {
      if (nodeFilter != null && !nodeFilter.apply(n)) {
        return;
      }

      // If we are traversing the externs, then we save a pointer to the scope
      // generated by them, so that we can do lookups in it later.
      if (externsRoot != null && n == externsRoot) {
        externsScope = t.getScope();
      }

      String name;
      boolean isSet = false;
      Name.Type type = Name.Type.OTHER;
      boolean isPropAssign = false;

      switch (n.getType()) {
        case Token.GET:
        case Token.SET:
        case Token.STRING:
          // This may be a key in an object literal declaration.
          name = null;
          if (parent != null && parent.getType() == Token.OBJECTLIT) {
            name = getNameForObjLitKey(n);
          }
          if (name == null) return;
          isSet = true;
          switch (n.getType()) {
            case Token.STRING:
              type = getValueType(n.getFirstChild());
              break;
            case Token.GET:
              type = Name.Type.GET;
              break;
            case Token.SET:
              type = Name.Type.SET;
              break;
            default:
              throw new IllegalStateException("unexpected:" + n);
          }
          break;
        case Token.NAME:
          // This may be a variable get or set.
          if (parent != null) {
            switch (parent.getType()) {
              case Token.VAR:
                isSet = true;
                Node rvalue = n.getFirstChild();
                type = rvalue == null ? Name.Type.OTHER : getValueType(rvalue);
                break;
              case Token.ASSIGN:
                if (parent.getFirstChild() == n) {
                  isSet = true;
                  type = getValueType(n.getNext());
                }
                break;
              case Token.GETPROP:
                return;
              case Token.FUNCTION:
                Node gramps = parent.getParent();
                if (gramps == null ||
                    NodeUtil.isFunctionExpression(parent)) return;
                isSet = true;
                type = Name.Type.FUNCTION;
                break;
            }
          }
          name = n.getString();
          break;
        case Token.GETPROP:
          // This may be a namespaced name get or set.
          if (parent != null) {
            switch (parent.getType()) {
              case Token.ASSIGN:
                if (parent.getFirstChild() == n) {
                  isSet = true;
                  type = getValueType(n.getNext());
                  isPropAssign = true;
                }
                break;
              case Token.GETPROP:
                return;
            }
          }
          name = n.getQualifiedName();
          if (name == null) return;
          break;
        default:
          return;
      }

      // We are only interested in global names.
      Scope scope = t.getScope();
      if (!isGlobalNameReference(name, scope)) {
        return;
      }

      if (isSet) {
        if (isGlobalScope(scope)) {
          handleSetFromGlobal(t, n, parent, name, isPropAssign, type);
        } else {
          handleSetFromLocal(t, n, parent, name);
        }
      } else {
        handleGet(t, n, parent, name);
      }
    }

}