Examples of com.google.javascript.rhino.jstype.ObjectType

Package com.google.javascript.rhino.jstype

Examples of com.google.javascript.rhino.jstype.ObjectType

com.google.javascript.rhino.jstype.ObjectType
Object type. In JavaScript, all object types have properties, and each of those properties has a type. Property types may be DECLARED, INFERRED, or UNKNOWN. DECLARED properties have an explicit type annotation, as in: /xx @type {number} x/ Foo.prototype.bar = 1; This property may only hold number values, and an assignment to any other type of value is an error. INFERRED properties do not have an explicit type annotation. Rather, we try to find all the possible types that this property can hold. Foo.prototype.bar = 1; If the programmer assigns other types of values to this property, the property will take on the union of all these types. UNKNOWN properties are properties on the UNKNOWN type. The UNKNOWN type has all properties, but we do not know whether they are declared or inferred.

  public void testInterface() {
    testSame(
        "/** An interface. \n * @interface */ function Foo() {}" +
        "var f = new Foo();" +
        "/** @type {number} */ f.bar = 4;");
    ObjectType type = (ObjectType) globalScope.getVar("Foo").getType();
    assertEquals(
        "An interface.",
        type.getJSDocInfo().getBlockDescription());
  }

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    assertEquals(
        "Hello!",
        findGlobalNameType(
            "goog.Foo.prototype.baz").getJSDocInfo().getBlockDescription());


    ObjectType proto = (ObjectType) findGlobalNameType("goog.Foo.prototype");
    assertEquals(
        "Bye!",
        proto.getPropertyType("baz").getJSDocInfo().getBlockDescription());
  }

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    };
  }


  public void testStubProperty() {
    testSame("function Foo() {}; Foo.bar;");
    ObjectType foo = (ObjectType) globalScope.getVar("Foo").getType();
    assertFalse(foo.hasProperty("bar"));
    Asserts.assertTypeEquals(registry.getNativeType(UNKNOWN_TYPE),
        foo.getPropertyType("bar"));
    Asserts.assertTypeCollectionEquals(
        Lists.newArrayList(foo), registry.getTypesWithProperty("bar"));
  }

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        Lists.newArrayList(foo), registry.getTypesWithProperty("bar"));
  }


  public void testConstructorProperty() {
    testSame("var foo = {}; /** @constructor */ foo.Bar = function() {};");
    ObjectType foo = (ObjectType) findNameType("foo", globalScope);
    assertTrue(foo.hasProperty("Bar"));
    assertFalse(foo.isPropertyTypeInferred("Bar"));


    JSType fooBar = foo.getPropertyType("Bar");
    assertEquals("function (new:foo.Bar): undefined", fooBar.toString());
    Asserts.assertTypeCollectionEquals(
        Lists.newArrayList(foo), registry.getTypesWithProperty("Bar"));
  }

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             "var proto = Foo.prototype = {" +
             "   bar: function(a, b){}" +
             "};" +
             "proto.baz = function(c) {};" +
             "(function() { proto.baz = function() {}; })();");
    ObjectType foo = (ObjectType) findNameType("Foo", globalScope);
    assertTrue(foo.hasProperty("prototype"));


    ObjectType fooProto = (ObjectType) foo.getPropertyType("prototype");
    assertTrue(fooProto.hasProperty("bar"));
    assertEquals("function (?, ?): undefined",
        fooProto.getPropertyType("bar").toString());


    assertTrue(fooProto.hasProperty("baz"));
    assertEquals("function (?): undefined",
        fooProto.getPropertyType("baz").toString());
  }

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        fooProto.getPropertyType("baz").toString());
  }


  public void testEnumProperty() {
    testSame("var foo = {}; /** @enum */ foo.Bar = {XXX: 'xxx'};");
    ObjectType foo = (ObjectType) findNameType("foo", globalScope);
    assertTrue(foo.hasProperty("Bar"));
    assertFalse(foo.isPropertyTypeInferred("Bar"));
    assertTrue(foo.isPropertyTypeDeclared("Bar"));


    JSType fooBar = foo.getPropertyType("Bar");
    assertEquals("enum{foo.Bar}", fooBar.toString());
    Asserts.assertTypeCollectionEquals(
        Lists.newArrayList(foo), registry.getTypesWithProperty("Bar"));
  }

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        Lists.newArrayList(foo), registry.getTypesWithProperty("Bar"));
  }


  public void testInferredProperty1() {
    testSame("var foo = {}; foo.Bar = 3;");
    ObjectType foo = (ObjectType) findNameType("foo", globalScope);
    assertTrue(foo.toString(), foo.hasProperty("Bar"));
    assertEquals("number", foo.getPropertyType("Bar").toString());
    assertTrue(foo.isPropertyTypeInferred("Bar"));
  }

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    assertTrue(foo.isPropertyTypeInferred("Bar"));
  }


  public void testInferredProperty1a() {
    testSame("var foo = {}; /** @type {number} */ foo.Bar = 3;");
    ObjectType foo = (ObjectType) findNameType("foo", globalScope);
    assertTrue(foo.toString(), foo.hasProperty("Bar"));
    assertEquals("number", foo.getPropertyType("Bar").toString());
    assertFalse(foo.isPropertyTypeInferred("Bar"));
  }

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    assertFalse(foo.isPropertyTypeInferred("Bar"));
  }


  public void testInferredProperty2() {
    testSame("var foo = { Bar: 3 };");
    ObjectType foo = (ObjectType) findNameType("foo", globalScope);
    assertTrue(foo.toString(), foo.hasProperty("Bar"));
    assertEquals("number", foo.getPropertyType("Bar").toString());
    assertTrue(foo.isPropertyTypeInferred("Bar"));
  }

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    assertTrue(foo.isPropertyTypeInferred("Bar"));
  }


  public void testInferredProperty2b() {
    testSame("var foo = { /** @type {number} */ Bar: 3 };");
    ObjectType foo = (ObjectType) findNameType("foo", globalScope);
    assertTrue(foo.toString(), foo.hasProperty("Bar"));
    assertEquals("number", foo.getPropertyType("Bar").toString());
    assertFalse(foo.isPropertyTypeInferred("Bar"));
  }

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