Java ConsString类代码示例

import jdk.nashorn.internal.runtime.ConsString; //导入依赖的package包/类
/**
 * Wrap a Java object as corresponding script object
 *
 * @param obj object to wrap
 * @return    wrapped object
 */
public Object wrapAsObject(final Object obj) {
    if (obj instanceof Boolean) {
        return new NativeBoolean((Boolean)obj, this);
    } else if (obj instanceof Number) {
        return new NativeNumber(((Number)obj).doubleValue(), this);
    } else if (obj instanceof String || obj instanceof ConsString) {
        return new NativeString((CharSequence)obj, this);
    } else if (obj instanceof Object[]) { // extension
        return new NativeArray((Object[])obj);
    } else if (obj instanceof double[]) { // extension
        return new NativeArray((double[])obj);
    } else if (obj instanceof long[]) {
        return new NativeArray((long[])obj);
    } else if (obj instanceof int[]) {
        return new NativeArray((int[])obj);
    } else {
        // FIXME: more special cases? Map? List?
        return obj;
    }
}
 

import jdk.nashorn.internal.runtime.ConsString; //导入依赖的package包/类
@SuppressWarnings("unused")
private static Double toDouble(final Object obj0) {
    // TODO - Order tests for performance.
    for (Object obj = obj0; ;) {
        if (obj == null) {
            return null;
        } else if (obj instanceof Double) {
            return (Double) obj;
        } else if (obj instanceof Number) {
            return ((Number)obj).doubleValue();
        } else if (obj instanceof String) {
            return JSType.toNumber((String) obj);
        } else if (obj instanceof ConsString) {
            return JSType.toNumber(obj.toString());
        } else if (obj instanceof Boolean) {
            return (Boolean) obj ? 1 : +0.0;
        } else if (obj instanceof ScriptObject) {
            obj = JSType.toPrimitive(obj, Number.class);
            continue;
        } else if (obj == UNDEFINED) {
            return Double.NaN;
        }
        throw assertUnexpectedType(obj);
    }
}
 

import jdk.nashorn.internal.runtime.ConsString; //导入依赖的package包/类
@SuppressWarnings("unused")
private static Number toNumber(final Object obj0) {
    // TODO - Order tests for performance.
    for (Object obj = obj0; ;) {
        if (obj == null) {
            return null;
        } else if (obj instanceof Number) {
            return (Number) obj;
        } else if (obj instanceof String) {
            return JSType.toNumber((String) obj);
        } else if (obj instanceof ConsString) {
            return JSType.toNumber(obj.toString());
        } else if (obj instanceof Boolean) {
            return (Boolean) obj ? 1 : +0.0;
        } else if (obj instanceof ScriptObject) {
            obj = JSType.toPrimitive(obj, Number.class);
            continue;
        } else if (obj == UNDEFINED) {
            return Double.NaN;
        }
        throw assertUnexpectedType(obj);
    }
}
 

import jdk.nashorn.internal.runtime.ConsString; //导入依赖的package包/类
/**
 * Make a script object mirror on given object if needed.
 *
 * @param obj object to be wrapped/converted
 * @param homeGlobal global to which this object belongs.
 * @param jsonCompatible if true, the created wrapper will implement the Java {@code List} interface if
 * {@code obj} is a JavaScript {@code Array} object. Arrays retrieved through its properties (transitively)
 * will also implement the list interface.
 * @return wrapped/converted object
 */
private static Object wrap(final Object obj, final Object homeGlobal, final boolean jsonCompatible) {
    if(obj instanceof ScriptObject) {
        if (!(homeGlobal instanceof Global)) {
            return obj;
        }
        final ScriptObject sobj = (ScriptObject)obj;
        final Global global = (Global)homeGlobal;
        final ScriptObjectMirror mirror = new ScriptObjectMirror(sobj, global, jsonCompatible);
        if (jsonCompatible && sobj.isArray()) {
            return new JSONListAdapter(mirror, global);
        }
        return mirror;
    } else if(obj instanceof ConsString) {
        return obj.toString();
    } else if (jsonCompatible && obj instanceof ScriptObjectMirror) {
        // Since choosing JSON compatible representation is an explicit decision on user's part, if we're asked to
        // wrap a mirror that was not JSON compatible, explicitly create its compatible counterpart following the
        // principle of least surprise.
        return ((ScriptObjectMirror)obj).asJSONCompatible();
    }
    return obj;
}
 

import jdk.nashorn.internal.runtime.ConsString; //导入依赖的package包/类
/**
 * Test toString conversion
 */
@Test
public void testConsStringToString() {
    final ConsString cs1 = new ConsString("b", "c");
    final ConsString cs2 = new ConsString("d", "e");
    final ConsString cs3 = new ConsString(cs1, cs2);
    final ConsString cs4 = new ConsString(cs3, "f");
    final ConsString cs5 = new ConsString("a", cs4);
    assertEquals(cs5.toString(), "abcdef");
    assertEquals(cs4.toString(), "bcdef");
    assertEquals(cs3.toString(), "bcde");
    assertEquals(cs2.toString(), "de");
    assertEquals(cs1.toString(), "bc");
    // ConsStrings should be flattened now
    assertEquals(cs1.getComponents()[0], "bc");
    assertEquals(cs1.getComponents()[1], "");
    assertEquals(cs2.getComponents()[0], "de");
    assertEquals(cs2.getComponents()[1], "");
    assertEquals(cs3.getComponents()[0], "bcde");
    assertEquals(cs3.getComponents()[1], "");
    assertEquals(cs4.getComponents()[0], "bcdef");
    assertEquals(cs4.getComponents()[1], "");
    assertEquals(cs5.getComponents()[0], "abcdef");
    assertEquals(cs5.getComponents()[1], "");
}
 

import jdk.nashorn.internal.runtime.ConsString; //导入依赖的package包/类
/**
 * Test charAt
 */
@Test
public void testConsStringCharAt() {
    final ConsString cs1 = new ConsString("b", "c");
    final ConsString cs2 = new ConsString("d", "e");
    final ConsString cs3 = new ConsString(cs1, cs2);
    final ConsString cs4 = new ConsString(cs3, "f");
    final ConsString cs5 = new ConsString("a", cs4);
    assertEquals(cs1.charAt(1), 'c');
    assertEquals(cs2.charAt(0), 'd');
    assertEquals(cs3.charAt(3), 'e');
    assertEquals(cs4.charAt(1), 'c');
    assertEquals(cs5.charAt(2), 'c');
    // ConsStrings should be flattened now
    assertEquals(cs1.getComponents()[0], "bc");
    assertEquals(cs1.getComponents()[1], "");
    assertEquals(cs2.getComponents()[0], "de");
    assertEquals(cs2.getComponents()[1], "");
    assertEquals(cs3.getComponents()[0], "bcde");
    assertEquals(cs3.getComponents()[1], "");
    assertEquals(cs4.getComponents()[0], "bcdef");
    assertEquals(cs4.getComponents()[1], "");
    assertEquals(cs5.getComponents()[0], "abcdef");
    assertEquals(cs5.getComponents()[1], "");
}
 

import jdk.nashorn.internal.runtime.ConsString; //导入依赖的package包/类
/**
 * Make a script object mirror on given object if needed. Also converts ConsString instances to Strings.
 *
 * @param obj object to be wrapped/converted
 * @param homeGlobal global to which this object belongs. Not used for ConsStrings.
 * @param jsonCompatible if true, the created wrapper will implement the Java {@code List} interface if
 * {@code obj} is a JavaScript {@code Array} object. Arrays retrieved through its properties (transitively)
 * will also implement the list interface.
 * @return wrapped/converted object
 */
private static Object wrap(final Object obj, final Object homeGlobal, final boolean jsonCompatible) {
    if(obj instanceof ScriptObject) {
        if (!(homeGlobal instanceof Global)) {
            return obj;
        }
        final ScriptObject sobj = (ScriptObject)obj;
        final Global global = (Global)homeGlobal;
        final ScriptObjectMirror mirror = new ScriptObjectMirror(sobj, global, jsonCompatible);
        if (jsonCompatible && sobj.isArray()) {
            return new JSONListAdapter(mirror, global);
        }
        return mirror;
    } else if(obj instanceof ConsString) {
        return obj.toString();
    } else if (jsonCompatible && obj instanceof ScriptObjectMirror) {
        // Since choosing JSON compatible representation is an explicit decision on user's part, if we're asked to
        // wrap a mirror that was not JSON compatible, explicitly create its compatible counterpart following the
        // principle of least surprise.
        return ((ScriptObjectMirror)obj).asJSONCompatible();
    }
    return obj;
}
 

import jdk.nashorn.internal.runtime.ConsString; //导入依赖的package包/类
@Override
public Object wrapAsObject(final Object obj) {
    if (obj instanceof Boolean) {
        return new NativeBoolean((Boolean)obj, this);
    } else if (obj instanceof Number) {
        return new NativeNumber(((Number)obj).doubleValue(), this);
    } else if (obj instanceof String || obj instanceof ConsString) {
        return new NativeString((CharSequence)obj, this);
    } else if (obj instanceof Object[]) { // extension
        return new NativeArray((Object[])obj);
    } else if (obj instanceof double[]) { // extension
        return new NativeArray((double[])obj);
    } else if (obj instanceof long[]) {
        return new NativeArray((long[])obj);
    } else if (obj instanceof int[]) {
        return new NativeArray((int[])obj);
    } else {
        // FIXME: more special cases? Map? List?
        return obj;
    }
}
 

import jdk.nashorn.internal.runtime.ConsString; //导入依赖的package包/类
private static String toString(final Object obj0) {
    for (Object obj = obj0; ;) {
        if (obj == null) {
            return null;
        } else if (obj instanceof String) {
            return (String) obj;
        } else if (obj instanceof ConsString) {
            return obj.toString();
        } else if (obj instanceof Number) {
            return JSType.toString(((Number)obj).doubleValue());
        } else if (obj instanceof Boolean) {
            return ((Boolean) obj).toString();
        } else if (obj == UNDEFINED) {
            return "undefined";
        } else if (obj instanceof ScriptObject) {
            obj = JSType.toPrimitive(obj, String.class);
            continue;
        }
        throw assertUnexpectedType(obj);
    }
}
 

import jdk.nashorn.internal.runtime.ConsString; //导入依赖的package包/类
private static Long toLong(final Object obj0) {
    // TODO - Order tests for performance.
    for (Object obj = obj0; ;) {
        if (obj == null) {
            return null;
        } else if (obj instanceof Long) {
            return (Long) obj;
        } else if (obj instanceof Number) {
            return ((Number)obj).longValue();
        } else if (obj instanceof String || obj instanceof ConsString) {
            return JSType.toLong(obj);
        } else if (obj instanceof Boolean) {
            return (Boolean)obj ? 1L : 0L;
        } else if (obj instanceof ScriptObject) {
            obj = JSType.toPrimitive(obj, Number.class);
            continue;
        } else if (obj == UNDEFINED) {
            return null; // null or 0L?
        }
        throw assertUnexpectedType(obj);
    }
}