Java Code Examples for com.google.javascript.rhino.jstype.FunctionType#getSlot()

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Example 1
Source File: TypedScopeCreator.java    From astor with GNU General Public License v2.0 4 votes vote down vote up 
private void finishConstructorDefinition(
    Node n, String variableName, FunctionType fnType,
    Scope scopeToDeclareIn, CompilerInput input, Var newVar) {
  // Declare var.prototype in the scope chain.
  FunctionType superClassCtor = fnType.getSuperClassConstructor();
  Property prototypeSlot = fnType.getSlot("prototype");

  // When we declare the function prototype implicitly, we
  // want to make sure that the function and its prototype
  // are declared at the same node. We also want to make sure
  // that the if a symbol has both a Var and a JSType, they have
  // the same node.
  //
  // This consistency is helpful to users of SymbolTable,
  // because everything gets declared at the same place.
  prototypeSlot.setNode(n);

  String prototypeName = variableName + ".prototype";

  // There are some rare cases where the prototype will already
  // be declared. See TypedScopeCreatorTest#testBogusPrototypeInit.
  // Fortunately, other warnings will complain if this happens.
  Var prototypeVar = scopeToDeclareIn.getVar(prototypeName);
  if (prototypeVar != null && prototypeVar.scope == scopeToDeclareIn) {
    scopeToDeclareIn.undeclare(prototypeVar);
  }

  scopeToDeclareIn.declare(prototypeName,
      n, prototypeSlot.getType(), input,
      /* declared iff there's an explicit supertype */
      superClassCtor == null ||
      superClassCtor.getInstanceType().isEquivalentTo(
          getNativeType(OBJECT_TYPE)));

  // Make sure the variable is initialized to something if
  // it constructs itself.
  if (newVar.getInitialValue() == null &&
      !n.isFromExterns()) {
    compiler.report(
        JSError.make(sourceName, n,
            fnType.isConstructor() ?
            CTOR_INITIALIZER : IFACE_INITIALIZER,
            variableName));
  }
}