25 

    25 

    26 package jdk.nashorn.internal.runtime.linker;

    26 package jdk.nashorn.internal.runtime.linker;

    27 

    27 

    28 import static jdk.nashorn.internal.lookup.Lookup.MH;

    28 import static jdk.nashorn.internal.lookup.Lookup.MH;

    29 import static jdk.nashorn.internal.runtime.ECMAErrors.typeError;

    29 import static jdk.nashorn.internal.runtime.ECMAErrors.typeError;

    30 import static jdk.nashorn.internal.runtime.ScriptRuntime.UNDEFINED;

    31 import static jdk.nashorn.internal.runtime.ScriptRuntime.UNDEFINED;

    31 

    32 

    32 import java.lang.invoke.MethodHandle;

    33 import java.lang.invoke.MethodHandle;

    33 import java.lang.invoke.MethodHandles;

    34 import java.lang.invoke.MethodHandles;

    34 import java.util.HashMap;

    35 import java.util.HashMap;

    76             // TODO: if/when we're allowed to use FindBugs at build time, we can use annotations to disable this warning

    77             // TODO: if/when we're allowed to use FindBugs at build time, we can use annotations to disable this warning

    77             return null;

    78             return null;

    78         }

    79         }

    79 

    80 

    80         if (obj == UNDEFINED) {

    81         if (obj == UNDEFINED) {

    82             return null;

    83             return null;

    83         }

    84         }

    84 

    85 

    85         if (obj instanceof Number) {

    86         if (obj instanceof Number) {

    86             final double num = ((Number) obj).doubleValue();

    87             final double num = ((Number) obj).doubleValue();

    87             return num != 0 && !Double.isNaN(num);

    88             return num != 0 && !Double.isNaN(num);

    88         }

    89         }

    89 

    90 

    91             return ((CharSequence) obj).length() > 0;

    92             return ((CharSequence) obj).length() > 0;

    92         }

    93         }

    93 

    94 

    94         if (obj instanceof ScriptObject) {

    95         if (obj instanceof ScriptObject) {

    95             return true;

    96             return true;

   205                     return 0L;

   206                     return 0L;

   206                 }

   207                 }

   207                 return f.longValue();

   208                 return f.longValue();

   208             } else if (obj instanceof Number) {

   209             } else if (obj instanceof Number) {

   209                 return ((Number)obj).longValue();

   210                 return ((Number)obj).longValue();

   211                 return JSType.toLong(obj);

   212                 return JSType.toLong(obj);

   212             } else if (obj instanceof Boolean) {

   213             } else if (obj instanceof Boolean) {

   213                 return (Boolean)obj ? 1L : 0L;

   214                 return (Boolean)obj ? 1L : 0L;

   214             } else if (obj instanceof ScriptObject) {

   215             } else if (obj instanceof ScriptObject) {

   215                 obj = JSType.toPrimitive(obj, Number.class);

   216                 obj = JSType.toPrimitive(obj, Number.class);