Examples of com.google.javascript.rhino.JSDocInfo$Property

com.google.javascript.rhino.JSDocInfo

JSDoc information describing JavaScript code. JSDoc is represented as a unified object with fields for each JSDoc annotation, even though some combinations are incorrect. For instance, if a JSDoc describes an enum, it cannot have information about a return type. This implementation takes advantage of such incompatibilities to reuse fields for multiple purposes, reducing memory consumption.

Constructing {@link JSDocInfo} objects is simplified by{@link JSDocInfoBuilder} which provides early incompatibility detection.


    private void maybeRecordAliasedNominalType(Node nameNode) {
      Preconditions.checkArgument(nameNode.isQualifiedName());
      Node aliasedDef = nameNode.getParent();
      Preconditions.checkState(aliasedDef.isVar() || aliasedDef.isAssign());
      JSDocInfo jsdoc = NodeUtil.getBestJSDocInfo(aliasedDef);
      Node init = NodeUtil.getInitializer(nameNode);
      RawNominalType rawType =
          currentScope.getNominalType(QualifiedName.fromNode(init));
      String initQname = init.getQualifiedName();
      if (jsdoc.isConstructor()) {
        if (rawType == null || rawType.isInterface()) {
          warnings.add(JSError.make(init, EXPECTED_CONSTRUCTOR, initQname));
          return;
        }
      } else if (jsdoc.isInterface()) {
        if (rawType == null || !rawType.isInterface()) {
          warnings.add(JSError.make(init, EXPECTED_INTERFACE, initQname));
          return;
        }
      }

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      }


      // Warn for a prop declared with @override that isn't overriding anything.
      for (String pname : nonInheritedPropNames) {
        Node defSite = propertyDefs.get(rawNominalType, pname).defSite;
        JSDocInfo jsdoc = NodeUtil.getBestJSDocInfo(defSite);
        if (jsdoc != null && jsdoc.isOverride()) {
          warnings.add(JSError.make(defSite, TypeCheck.UNKNOWN_OVERRIDE,
                  pname, rawNominalType.getName()));
        }
      }

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    /**
     * @return Whether the node has a JSDoc that actually declares something.
     */
    private boolean jsdocContainsDeclarations(Node node) {
      JSDocInfo info = node.getJSDocInfo();
      return (info != null && info.containsDeclaration());
    }

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  private boolean isInterface(Node n) {
    if (!n.isFunction()) {
      return false;
    }


    JSDocInfo jsDoc = NodeUtil.getBestJSDocInfo(n);
    return jsDoc != null && jsDoc.isInterface();
  }

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    JSType returnType = n.getJSType().toMaybeFunctionType().getReturnType();
    if (returnType == null
        || returnType.isUnknownType() || !returnType.isNullable()) {
      return false;
    }
    JSDocInfo info = NodeUtil.getBestJSDocInfo(n);
    return info != null && info.hasReturnType();
  }

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  }


  @Override
  public void visit(NodeTraversal t, Node n, Node parent) {
    if (n.isObjectLit()) {
      JSDocInfo jsdoc = NodeUtil.getBestJSDocInfo(n);
      if (jsdoc != null && jsdoc.hasEnumParameterType()) {
        checkDuplicateEnumValues(t, n);
      }
    }
  }

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    assertNull(varNode.getJSDocInfo());


    // a
    Node a = varNode.getFirstChild();
    assertNotNull(a.getJSDocInfo());
    JSDocInfo info = a.getJSDocInfo();
    assertNotNull(info);
    assertFalse(info.isDefine());
    assertTypeEquals(NUMBER_TYPE, info.getType());


    // b
    Node b = a.getNext();
    info = b.getJSDocInfo();
    assertNotNull(info);
    assertTrue(info.isDefine());
    assertTypeEquals(NUMBER_TYPE, info.getType());
  }

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        "var a = /** @param {number} index */5;" +
        "/** @return boolean */function f(index){}")
        .getFirstChild().getNext();


    assertEquals(Token.FUNCTION, functionNode.getType());
    JSDocInfo info = functionNode.getJSDocInfo();
    assertNotNull(info);
    assertFalse(info.hasParameter("index"));
    assertTrue(info.hasReturnType());
    assertTypeEquals(UNKNOWN_TYPE, info.getReturnType());
  }

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       parse("/** @type {{x : number, 'y' : string, z}} */var a;")
        .getFirstChild();


    // VAR
    assertEquals(Token.VAR, varNode.getType());
    JSDocInfo info = varNode.getJSDocInfo();
    assertNotNull(info);


    assertTypeEquals(createRecordTypeBuilder().
                     addProperty("x", NUMBER_TYPE, null).
                     addProperty("y", STRING_TYPE, null).
                     addProperty("z", UNKNOWN_TYPE, null).
                     build(),
                     info.getType());


    // NAME
    Node nameNode = varNode.getFirstChild();
    assertEquals(Token.NAME, nameNode.getType());
    assertNull(nameNode.getJSDocInfo());

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  public void testInlineJSDocAttachment1() {
    Node fn = parse("function f(/** string */ x) {}").getFirstChild();
    assertTrue(fn.isFunction());


    JSDocInfo info =
        fn.getFirstChild().getNext().getFirstChild().getJSDocInfo();
    assertNotNull(info);
    assertTypeEquals(STRING_TYPE, info.getType());
  }

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