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

Package com.google.javascript.rhino.jstype

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

com.google.javascript.rhino.jstype.FunctionType
This derived type provides extended information about a function, including its return type and argument types.
Note: the parameters list is the LP node that is the parent of the actual NAME node containing the parsed argument list (annotated with JSDOC_TYPE_PROP's for the compile-time type of each argument.

    testSame(
        "/** Abstract method. \n * @type {!Function} */ var abstractMethod;" +
        "/** @constructor */ function Foo() {}" +
        "/** Block description. \n * @param {number} x */" +
        "Foo.prototype.bar = abstractMethod;");
    FunctionType abstractMethod =
        (FunctionType) findGlobalNameType("abstractMethod");
    assertNull(abstractMethod.getJSDocInfo());


    FunctionType ctor = (FunctionType) findGlobalNameType("Foo");
    ObjectType proto = ctor.getInstanceType().getImplicitPrototype();
    FunctionType method = (FunctionType) proto.getPropertyType("bar");
    assertEquals(
        "Block description.",
        method.getJSDocInfo().getBlockDescription());
    assertEquals(
        "Block description.",
        proto.getOwnPropertyJSDocInfo("bar").getBlockDescription());
  }

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        "function ((Object|null|undefined), (Object|null|undefined)): ?",
        f.getPropertyType("apply").toString());


    // The type of apply() on the function prototype just takes what it was
    // declared with.
    FunctionType func = (FunctionType) globalScope.getVar("Function").getType();
    assertEquals("Function",
        func.getPrototype().getPropertyType("apply").toString());
  }

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    testSame(
        CompilerTypeTestCase.DEFAULT_EXTERNS,
        "", null);


    Var v = globalScope.getVar("Object");
    FunctionType obj = (FunctionType) v.getType();
    assertEquals("function (new:Object, *): ?", obj.toString());
    assertNotNull(v.getNode());
    assertNotNull(v.input);
  }

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        "/** @constructor */ function Window() {}" +
        "Window.prototype.alert = function() {};" +
        "var x = this;");


    ObjectType x = (ObjectType) (globalScope.getVar("x").getType());
    FunctionType windowCtor =
        (FunctionType) (globalScope.getVar("Window").getType());
    assertEquals("global this", x.toString());
    assertTrue(x.isSubtype(windowCtor.getInstanceType()));
    assertFalse(x.equals(windowCtor.getInstanceType()));
    assertTrue(x.hasProperty("alert"));
  }

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        "/** @constructor */ function Window() {}" +
        "Window.prototype = {alert: function() {}};" +
        "var x = this;");


    ObjectType x = (ObjectType) (globalScope.getVar("x").getType());
    FunctionType windowCtor =
        (FunctionType) (globalScope.getVar("Window").getType());
    assertEquals("global this", x.toString());
    assertTrue(x.isSubtype(windowCtor.getInstanceType()));
    assertFalse(x.equals(windowCtor.getInstanceType()));
    assertTrue(x.hasProperty("alert"));
  }

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        "/** @constructor */ function Foo() {}" +
        "/** @param {number} x */ Foo.prototype.bar = abstractMethod;");
    assertEquals(
        "Function", findNameType("abstractMethod", globalScope).toString());


    FunctionType ctor = (FunctionType) findNameType("Foo", globalScope);
    ObjectType instance = ctor.getInstanceType();
    assertEquals("Foo", instance.toString());


    ObjectType proto = instance.getImplicitPrototype();
    assertEquals("Foo.prototype", proto.toString());

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        "/** @constructor */ function Foo() {}" +
        "Foo.prototype = {/** @param {number} x */ bar: abstractMethod};");
    assertEquals(
        "Function", findNameType("abstractMethod", globalScope).toString());


    FunctionType ctor = (FunctionType) findNameType("Foo", globalScope);
    ObjectType instance = ctor.getInstanceType();
    assertEquals("Foo", instance.toString());


    ObjectType proto = instance.getImplicitPrototype();
    assertEquals("Foo.prototype", proto.toString());

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        "/** @constructor\n" +
        "  * @extends {goog.Base} */goog.Derived = function(){};\n");
    Node subTypeName = n.getLastChild().getLastChild().getFirstChild();
    assertEquals("goog.Derived", subTypeName.getQualifiedName());


    FunctionType subCtorType =
        (FunctionType) subTypeName.getNext().getJSType();
    assertEquals("goog.Derived", subCtorType.getInstanceType().toString());


    JSType superType = subCtorType.getPrototype().getImplicitPrototype();
    assertEquals("goog.Base", superType.toString());
  }

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    TypeCheckResult p =
        parseAndTypeCheckWithScope("/** @constructor */function A(){};");


    JSType type = p.scope.getVar("A").getType();
    assertTrue(type instanceof FunctionType);
    FunctionType fType = (FunctionType) type;
    assertEquals("A", fType.getReferenceName());
  }

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    ObjectType goog = (ObjectType) p.scope.getVar("goog").getType();
    assertEquals(NATIVE_PROPERTIES_COUNT + 1, goog.getPropertiesCount());
    JSType googA = goog.getPropertyType("A");
    assertNotNull(googA);
    assertTrue(googA instanceof FunctionType);
    FunctionType googAFunction = (FunctionType) googA;
    ObjectType classA = googAFunction.getInstanceType();
    assertEquals(NATIVE_PROPERTIES_COUNT + 1, classA.getPropertiesCount());
    checkObjectType(classA, "m1", NUMBER_TYPE);
  }

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