jdk.nashorn.internal.runtime.linker.NashornGuards Java Examples

The following examples show how to use jdk.nashorn.internal.runtime.linker.NashornGuards. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: ScriptObject.java    From openjdk-8-source with GNU General Public License v2.0 6 votes vote down vote up 
/**
 * Fall back if a function property is not found.
 * @param desc The call site descriptor
 * @param request the link request
 * @return GuardedInvocation to be invoked at call site.
 */
public GuardedInvocation noSuchMethod(final CallSiteDescriptor desc, final LinkRequest request) {
    final String       name      = desc.getNameToken(2);
    final FindProperty find      = findProperty(NO_SUCH_METHOD_NAME, true);
    final boolean      scopeCall = isScope() && NashornCallSiteDescriptor.isScope(desc);

    if (find == null) {
        return noSuchProperty(desc, request);
    }

    final Object value = getObjectValue(find);
    if (! (value instanceof ScriptFunction)) {
        return createEmptyGetter(desc, name);
    }

    final ScriptFunction func = (ScriptFunction)value;
    final Object thiz = scopeCall && func.isStrict() ? ScriptRuntime.UNDEFINED : this;
    // TODO: It'd be awesome if we could bind "name" without binding "this".
    return new GuardedInvocation(MH.dropArguments(MH.constant(ScriptFunction.class,
            func.makeBoundFunction(thiz, new Object[] { name })), 0, Object.class),
            null, NashornGuards.getMapGuard(getMap()));
}
Example #2
Source File: ScriptObject.java    From nashorn with GNU General Public License v2.0 6 votes vote down vote up 
/**
 * Fall back if a function property is not found.
 * @param desc The call site descriptor
 * @param request the link request
 * @return GuardedInvocation to be invoked at call site.
 */
public GuardedInvocation noSuchMethod(final CallSiteDescriptor desc, final LinkRequest request) {
    final String       name      = desc.getNameToken(2);
    final FindProperty find      = findProperty(NO_SUCH_METHOD_NAME, true);
    final boolean      scopeCall = isScope() && NashornCallSiteDescriptor.isScope(desc);

    if (find == null) {
        return noSuchProperty(desc, request);
    }

    final Object value = getObjectValue(find);
    if (! (value instanceof ScriptFunction)) {
        return createEmptyGetter(desc, name);
    }

    final ScriptFunction func = (ScriptFunction)value;
    final Object thiz = scopeCall && func.isStrict() ? ScriptRuntime.UNDEFINED : this;
    // TODO: It'd be awesome if we could bind "name" without binding "this".
    return new GuardedInvocation(MH.dropArguments(MH.constant(ScriptFunction.class,
            func.makeBoundFunction(thiz, new Object[] { name })), 0, Object.class),
            null, NashornGuards.getMapGuard(getMap()));
}
Example #3
Source File: ScriptObject.java    From openjdk-8 with GNU General Public License v2.0 6 votes vote down vote up 
/**
 * Fall back if a function property is not found.
 * @param desc The call site descriptor
 * @param request the link request
 * @return GuardedInvocation to be invoked at call site.
 */
public GuardedInvocation noSuchMethod(final CallSiteDescriptor desc, final LinkRequest request) {
    final String       name      = desc.getNameToken(2);
    final FindProperty find      = findProperty(NO_SUCH_METHOD_NAME, true);
    final boolean      scopeCall = isScope() && NashornCallSiteDescriptor.isScope(desc);

    if (find == null) {
        return noSuchProperty(desc, request);
    }

    final Object value = getObjectValue(find);
    if (! (value instanceof ScriptFunction)) {
        return createEmptyGetter(desc, name);
    }

    final ScriptFunction func = (ScriptFunction)value;
    final Object thiz = scopeCall && func.isStrict() ? ScriptRuntime.UNDEFINED : this;
    // TODO: It'd be awesome if we could bind "name" without binding "this".
    return new GuardedInvocation(MH.dropArguments(MH.constant(ScriptFunction.class,
            func.makeBoundFunction(thiz, new Object[] { name })), 0, Object.class),
            null, NashornGuards.getMapGuard(getMap()));
}
Example #4
Source File: SetMethodCreator.java    From openjdk-jdk8u-backup with GNU General Public License v2.0 5 votes vote down vote up 
/**
 * Composes from its components an actual guarded invocation that represents the dynamic setter method for the property.
 * @return the composed guarded invocation that represents the dynamic setter method for the property.
 */
GuardedInvocation createGuardedInvocation() {
    // getGuard() and getException() either both return null, or neither does. The reason for that is that now
    // getGuard returns a map guard that casts its argument to ScriptObject, and if that fails, we need to
    // relink on ClassCastException.
    final boolean explicitInstanceOfCheck = NashornGuards.explicitInstanceOfCheck(desc, request);
    return new GuardedInvocation(methodHandle, NashornGuards.getGuard(sobj, property, desc, explicitInstanceOfCheck),
            (SwitchPoint)null, explicitInstanceOfCheck ? null : ClassCastException.class);
}
Example #5
Source File: ScriptObject.java    From TencentKona-8 with GNU General Public License v2.0 5 votes vote down vote up 
/**
 * Fall back if a function property is not found.
 * @param desc The call site descriptor
 * @param request the link request
 * @return GuardedInvocation to be invoked at call site.
 */
public GuardedInvocation noSuchMethod(final CallSiteDescriptor desc, final LinkRequest request) {
    final String       name      = desc.getNameToken(2);
    final FindProperty find      = findProperty(NO_SUCH_METHOD_NAME, true);
    final boolean      scopeCall = isScope() && NashornCallSiteDescriptor.isScope(desc);

    if (find == null) {
        return noSuchProperty(desc, request);
    }

    final boolean explicitInstanceOfCheck = explicitInstanceOfCheck(desc, request);

    final Object value = find.getObjectValue();
    if (!(value instanceof ScriptFunction)) {
        return createEmptyGetter(desc, explicitInstanceOfCheck, name);
    }

    final ScriptFunction func = (ScriptFunction)value;
    final Object         thiz = scopeCall && func.isStrict() ? UNDEFINED : this;
    // TODO: It'd be awesome if we could bind "name" without binding "this".
    // Since we're binding this we must use an identity guard here.
    return new GuardedInvocation(
            MH.dropArguments(
                    MH.constant(
                            ScriptFunction.class,
                            func.createBound(thiz, new Object[] { name })),
                    0,
                    Object.class),
            NashornGuards.combineGuards(
                    NashornGuards.getIdentityGuard(this),
                    NashornGuards.getMapGuard(getMap(), true)));
}
Example #6
Source File: WithObject.java    From openjdk-jdk8u-backup with GNU General Public License v2.0 5 votes vote down vote up 
private GuardedInvocation fixScopeCallSite(final GuardedInvocation link, final String name, final ScriptObject owner) {
    final GuardedInvocation newLink             = fixReceiverType(link, WITHSCOPEFILTER);
    final MethodHandle      expressionGuard     = expressionGuard(name, owner);
    final MethodHandle      filterGuardReceiver = filterGuardReceiver(newLink, WITHSCOPEFILTER);
    return link.replaceMethods(
            filterReceiver(
                    newLink.getInvocation(),
                    WITHSCOPEFILTER),
            NashornGuards.combineGuards(
                    expressionGuard,
                    filterGuardReceiver));
}
Example #7
Source File: ScriptObject.java    From openjdk-jdk8u-backup with GNU General Public License v2.0 5 votes vote down vote up 
private GuardedInvocation createEmptyGetter(final CallSiteDescriptor desc, final boolean explicitInstanceOfCheck, final String name) {
    if (NashornCallSiteDescriptor.isOptimistic(desc)) {
        throw new UnwarrantedOptimismException(UNDEFINED, NashornCallSiteDescriptor.getProgramPoint(desc), Type.OBJECT);
    }

    return new GuardedInvocation(Lookup.emptyGetter(desc.getMethodType().returnType()),
            NashornGuards.getMapGuard(getMap(), explicitInstanceOfCheck), getProtoSwitchPoints(name, null),
            explicitInstanceOfCheck ? null : ClassCastException.class);
}
Example #8
Source File: ScriptObject.java    From openjdk-jdk8u-backup with GNU General Public License v2.0 5 votes vote down vote up 
/**
 * Fall back if a function property is not found.
 * @param desc The call site descriptor
 * @param request the link request
 * @return GuardedInvocation to be invoked at call site.
 */
public GuardedInvocation noSuchMethod(final CallSiteDescriptor desc, final LinkRequest request) {
    final String       name      = desc.getNameToken(2);
    final FindProperty find      = findProperty(NO_SUCH_METHOD_NAME, true);
    final boolean      scopeCall = isScope() && NashornCallSiteDescriptor.isScope(desc);

    if (find == null) {
        return noSuchProperty(desc, request);
    }

    final boolean explicitInstanceOfCheck = explicitInstanceOfCheck(desc, request);

    final Object value = find.getObjectValue();
    if (!(value instanceof ScriptFunction)) {
        return createEmptyGetter(desc, explicitInstanceOfCheck, name);
    }

    final ScriptFunction func = (ScriptFunction)value;
    final Object         thiz = scopeCall && func.isStrict() ? UNDEFINED : this;
    // TODO: It'd be awesome if we could bind "name" without binding "this".
    // Since we're binding this we must use an identity guard here.
    return new GuardedInvocation(
            MH.dropArguments(
                    MH.constant(
                            ScriptFunction.class,
                            func.createBound(thiz, new Object[] { name })),
                    0,
                    Object.class),
            NashornGuards.combineGuards(
                    NashornGuards.getIdentityGuard(this),
                    NashornGuards.getMapGuard(getMap(), true)));
}
Example #9
Source File: ScriptObject.java    From jdk8u_nashorn with GNU General Public License v2.0 5 votes vote down vote up 
/**
 * Fall back if a function property is not found.
 * @param desc The call site descriptor
 * @param request the link request
 * @return GuardedInvocation to be invoked at call site.
 */
public GuardedInvocation noSuchMethod(final CallSiteDescriptor desc, final LinkRequest request) {
    final String       name      = desc.getNameToken(2);
    final FindProperty find      = findProperty(NO_SUCH_METHOD_NAME, true);
    final boolean      scopeCall = isScope() && NashornCallSiteDescriptor.isScope(desc);

    if (find == null) {
        return noSuchProperty(desc, request);
    }

    final boolean explicitInstanceOfCheck = explicitInstanceOfCheck(desc, request);

    final Object value = find.getObjectValue();
    if (!(value instanceof ScriptFunction)) {
        return createEmptyGetter(desc, explicitInstanceOfCheck, name);
    }

    final ScriptFunction func = (ScriptFunction)value;
    final Object         thiz = scopeCall && func.isStrict() ? UNDEFINED : this;
    // TODO: It'd be awesome if we could bind "name" without binding "this".
    // Since we're binding this we must use an identity guard here.
    return new GuardedInvocation(
            MH.dropArguments(
                    MH.constant(
                            ScriptFunction.class,
                            func.createBound(thiz, new Object[] { name })),
                    0,
                    Object.class),
            NashornGuards.combineGuards(
                    NashornGuards.getIdentityGuard(this),
                    NashornGuards.getMapGuard(getMap(), true)));
}
Example #10
Source File: ScriptObject.java    From jdk8u_nashorn with GNU General Public License v2.0 5 votes vote down vote up 
private GuardedInvocation createEmptyGetter(final CallSiteDescriptor desc, final boolean explicitInstanceOfCheck, final String name) {
    if (NashornCallSiteDescriptor.isOptimistic(desc)) {
        throw new UnwarrantedOptimismException(UNDEFINED, NashornCallSiteDescriptor.getProgramPoint(desc), Type.OBJECT);
    }

    return new GuardedInvocation(Lookup.emptyGetter(desc.getMethodType().returnType()),
            NashornGuards.getMapGuard(getMap(), explicitInstanceOfCheck), getProtoSwitchPoints(name, null),
            explicitInstanceOfCheck ? null : ClassCastException.class);
}
Example #11
Source File: NativeString.java    From jdk8u60 with GNU General Public License v2.0 5 votes vote down vote up 
@Override
protected GuardedInvocation findGetIndexMethod(final CallSiteDescriptor desc, final LinkRequest request) {
    final Object self = request.getReceiver();
    final Class<?> returnType = desc.getMethodType().returnType();

    if (returnType == Object.class && JSType.isString(self)) {
        try {
            return new GuardedInvocation(MH.findStatic(MethodHandles.lookup(), NativeString.class, "get", desc.getMethodType()), NashornGuards.getInstanceOf2Guard(String.class, ConsString.class));
        } catch (final LookupException e) {
            //empty. Shouldn't happen. Fall back to super
        }
    }
    return super.findGetIndexMethod(desc, request);
}
Example #12
Source File: SetMethodCreator.java    From jdk8u60 with GNU General Public License v2.0 5 votes vote down vote up 
/**
 * Composes from its components an actual guarded invocation that represents the dynamic setter method for the property.
 * @return the composed guarded invocation that represents the dynamic setter method for the property.
 */
GuardedInvocation createGuardedInvocation() {
    // getGuard() and getException() either both return null, or neither does. The reason for that is that now
    // getGuard returns a map guard that casts its argument to ScriptObject, and if that fails, we need to
    // relink on ClassCastException.
    final boolean explicitInstanceOfCheck = NashornGuards.explicitInstanceOfCheck(desc, request);
    return new GuardedInvocation(methodHandle, NashornGuards.getGuard(sobj, property, desc, explicitInstanceOfCheck),
            (SwitchPoint)null, explicitInstanceOfCheck ? null : ClassCastException.class);
}
Example #13
Source File: WithObject.java    From jdk8u60 with GNU General Public License v2.0 5 votes vote down vote up 
private GuardedInvocation fixScopeCallSite(final GuardedInvocation link, final String name, final ScriptObject owner) {
    final GuardedInvocation newLink             = fixReceiverType(link, WITHSCOPEFILTER);
    final MethodHandle      expressionGuard     = expressionGuard(name, owner);
    final MethodHandle      filterGuardReceiver = filterGuardReceiver(newLink, WITHSCOPEFILTER);
    return link.replaceMethods(
            filterReceiver(
                    newLink.getInvocation(),
                    WITHSCOPEFILTER),
            NashornGuards.combineGuards(
                    expressionGuard,
                    filterGuardReceiver));
}
Example #14
Source File: ScriptObject.java    From jdk8u60 with GNU General Public License v2.0 5 votes vote down vote up 
private GuardedInvocation createEmptyGetter(final CallSiteDescriptor desc, final boolean explicitInstanceOfCheck, final String name) {
    if (NashornCallSiteDescriptor.isOptimistic(desc)) {
        throw new UnwarrantedOptimismException(UNDEFINED, NashornCallSiteDescriptor.getProgramPoint(desc), Type.OBJECT);
    }

    return new GuardedInvocation(Lookup.emptyGetter(desc.getMethodType().returnType()),
            NashornGuards.getMapGuard(getMap(), explicitInstanceOfCheck), getProtoSwitchPoint(name, null),
            explicitInstanceOfCheck ? null : ClassCastException.class);
}
Example #15
Source File: ScriptObject.java    From jdk8u60 with GNU General Public License v2.0 5 votes vote down vote up 
/**
 * Fall back if a function property is not found.
 * @param desc The call site descriptor
 * @param request the link request
 * @return GuardedInvocation to be invoked at call site.
 */
public GuardedInvocation noSuchMethod(final CallSiteDescriptor desc, final LinkRequest request) {
    final String       name      = desc.getNameToken(2);
    final FindProperty find      = findProperty(NO_SUCH_METHOD_NAME, true);
    final boolean      scopeCall = isScope() && NashornCallSiteDescriptor.isScope(desc);

    if (find == null) {
        return noSuchProperty(desc, request);
    }

    final boolean explicitInstanceOfCheck = explicitInstanceOfCheck(desc, request);

    final Object value = find.getObjectValue();
    if (!(value instanceof ScriptFunction)) {
        return createEmptyGetter(desc, explicitInstanceOfCheck, name);
    }

    final ScriptFunction func = (ScriptFunction)value;
    final Object         thiz = scopeCall && func.isStrict() ? UNDEFINED : this;
    // TODO: It'd be awesome if we could bind "name" without binding "this".
    // Since we're binding this we must use an identity guard here.
    return new GuardedInvocation(
            MH.dropArguments(
                    MH.constant(
                            ScriptFunction.class,
                            func.makeBoundFunction(thiz, new Object[] { name })),
                    0,
                    Object.class),
            NashornGuards.combineGuards(
                    NashornGuards.getIdentityGuard(this),
                    NashornGuards.getMapGuard(getMap(), true)));
}
Example #16
Source File: WithObject.java    From TencentKona-8 with GNU General Public License v2.0 5 votes vote down vote up 
private GuardedInvocation fixScopeCallSite(final GuardedInvocation link, final String name, final ScriptObject owner) {
    final GuardedInvocation newLink             = fixReceiverType(link, WITHSCOPEFILTER);
    final MethodHandle      expressionGuard     = expressionGuard(name, owner);
    final MethodHandle      filterGuardReceiver = filterGuardReceiver(newLink, WITHSCOPEFILTER);
    return link.replaceMethods(
            filterReceiver(
                    newLink.getInvocation(),
                    WITHSCOPEFILTER),
            NashornGuards.combineGuards(
                    expressionGuard,
                    filterGuardReceiver));
}
Example #17
Source File: NativeString.java    From TencentKona-8 with GNU General Public License v2.0 5 votes vote down vote up 
@Override
protected GuardedInvocation findGetIndexMethod(final CallSiteDescriptor desc, final LinkRequest request) {
    final Object self = request.getReceiver();
    final Class<?> returnType = desc.getMethodType().returnType();

    if (returnType == Object.class && JSType.isString(self)) {
        try {
            return new GuardedInvocation(MH.findStatic(MethodHandles.lookup(), NativeString.class, "get", desc.getMethodType()), NashornGuards.getStringGuard());
        } catch (final LookupException e) {
            //empty. Shouldn't happen. Fall back to super
        }
    }
    return super.findGetIndexMethod(desc, request);
}
Example #18
Source File: NativeString.java    From openjdk-jdk9 with GNU General Public License v2.0 5 votes vote down vote up 
@Override
protected GuardedInvocation findGetIndexMethod(final CallSiteDescriptor desc, final LinkRequest request) {
    final Object self = request.getReceiver();
    final Class<?> returnType = desc.getMethodType().returnType();

    if (returnType == Object.class && JSType.isString(self)) {
        try {
            return new GuardedInvocation(MH.findStatic(MethodHandles.lookup(), NativeString.class, "get", desc.getMethodType()), NashornGuards.getStringGuard());
        } catch (final LookupException e) {
            //empty. Shouldn't happen. Fall back to super
        }
    }
    return super.findGetIndexMethod(desc, request);
}
Example #19
Source File: NativeString.java    From jdk8u_nashorn with GNU General Public License v2.0 5 votes vote down vote up 
@Override
protected GuardedInvocation findGetIndexMethod(final CallSiteDescriptor desc, final LinkRequest request) {
    final Object self = request.getReceiver();
    final Class<?> returnType = desc.getMethodType().returnType();

    if (returnType == Object.class && JSType.isString(self)) {
        try {
            return new GuardedInvocation(MH.findStatic(MethodHandles.lookup(), NativeString.class, "get", desc.getMethodType()), NashornGuards.getStringGuard());
        } catch (final LookupException e) {
            //empty. Shouldn't happen. Fall back to super
        }
    }
    return super.findGetIndexMethod(desc, request);
}
Example #20
Source File: ScriptObject.java    From openjdk-jdk9 with GNU General Public License v2.0 5 votes vote down vote up 
/**
 * Fall back if a function property is not found.
 * @param desc The call site descriptor
 * @param request the link request
 * @return GuardedInvocation to be invoked at call site.
 */
public GuardedInvocation noSuchMethod(final CallSiteDescriptor desc, final LinkRequest request) {
    final String       name      = NashornCallSiteDescriptor.getOperand(desc);
    final FindProperty find      = findProperty(NO_SUCH_METHOD_NAME, true);
    final boolean      scopeCall = isScope() && NashornCallSiteDescriptor.isScope(desc);

    if (find == null) {
        return noSuchProperty(desc, request)
                // Add proto switchpoint to switch from no-such-property to no-such-method if it is ever defined.
                .addSwitchPoint(getProtoSwitchPoint(NO_SUCH_METHOD_NAME));
    }

    final boolean explicitInstanceOfCheck = explicitInstanceOfCheck(desc, request);

    final Object value = find.getObjectValue();
    if (!(value instanceof ScriptFunction)) {
        return createEmptyGetter(desc, explicitInstanceOfCheck, name);
    }

    final ScriptFunction func = (ScriptFunction)value;
    final Object         thiz = scopeCall && func.isStrict() ? UNDEFINED : this;
    // TODO: It'd be awesome if we could bind "name" without binding "this".
    // Since we're binding this we must use an identity guard here.
    return new GuardedInvocation(
            MH.dropArguments(
                    MH.constant(
                            ScriptFunction.class,
                            func.createBound(thiz, new Object[] { name })),
                    0,
                    Object.class),
            NashornGuards.combineGuards(
                    NashornGuards.getIdentityGuard(this),
                    NashornGuards.getMapGuard(getMap(), true)))
            // Add a protoype switchpoint for the original name so this gets invalidated if it is ever defined.
            .addSwitchPoint(getProtoSwitchPoint(name));
}
Example #21
Source File: ScriptObject.java    From openjdk-jdk9 with GNU General Public License v2.0 5 votes vote down vote up 
private GuardedInvocation createEmptyGetter(final CallSiteDescriptor desc, final boolean explicitInstanceOfCheck, final String name) {
    if (NashornCallSiteDescriptor.isOptimistic(desc)) {
        throw new UnwarrantedOptimismException(UNDEFINED, NashornCallSiteDescriptor.getProgramPoint(desc), Type.OBJECT);
    }

    return new GuardedInvocation(Lookup.emptyGetter(desc.getMethodType().returnType()),
            NashornGuards.getMapGuard(getMap(), explicitInstanceOfCheck), getProtoSwitchPoints(name, null),
            explicitInstanceOfCheck ? null : ClassCastException.class);
}
Example #22
Source File: WithObject.java    From openjdk-jdk9 with GNU General Public License v2.0 5 votes vote down vote up 
private GuardedInvocation fixScopeCallSite(final GuardedInvocation link, final String name, final ScriptObject owner) {
    final GuardedInvocation newLink             = fixReceiverType(link, WITHSCOPEFILTER);
    final MethodHandle      expressionGuard     = expressionGuard(name, owner);
    final MethodHandle      filteredGuard       = filterGuardReceiver(newLink, WITHSCOPEFILTER);
    return link.replaceMethods(
            filterReceiver(
                    newLink.getInvocation(),
                    WITHSCOPEFILTER),
            NashornGuards.combineGuards(
                    expressionGuard,
                    filteredGuard));
}
Example #23
Source File: SetMethodCreator.java    From openjdk-jdk9 with GNU General Public License v2.0 5 votes vote down vote up 
/**
 * Composes from its components an actual guarded invocation that represents the dynamic setter method for the property.
 * @return the composed guarded invocation that represents the dynamic setter method for the property.
 */
GuardedInvocation createGuardedInvocation() {
    // getGuard() and getException() either both return null, or neither does. The reason for that is that now
    // getGuard returns a map guard that casts its argument to ScriptObject, and if that fails, we need to
    // relink on ClassCastException.
    final boolean explicitInstanceOfCheck = NashornGuards.explicitInstanceOfCheck(desc, request);
    return new GuardedInvocation(methodHandle, NashornGuards.getGuard(sobj, property, desc, explicitInstanceOfCheck),
            (SwitchPoint)null, explicitInstanceOfCheck ? null : ClassCastException.class);
}
Example #24
Source File: NativeString.java    From hottub with GNU General Public License v2.0 5 votes vote down vote up 
@Override
protected GuardedInvocation findGetIndexMethod(final CallSiteDescriptor desc, final LinkRequest request) {
    final Object self = request.getReceiver();
    final Class<?> returnType = desc.getMethodType().returnType();

    if (returnType == Object.class && JSType.isString(self)) {
        try {
            return new GuardedInvocation(MH.findStatic(MethodHandles.lookup(), NativeString.class, "get", desc.getMethodType()), NashornGuards.getStringGuard());
        } catch (final LookupException e) {
            //empty. Shouldn't happen. Fall back to super
        }
    }
    return super.findGetIndexMethod(desc, request);
}
Example #25
Source File: ScriptObject.java    From hottub with GNU General Public License v2.0 5 votes vote down vote up 
/**
 * Fall back if a function property is not found.
 * @param desc The call site descriptor
 * @param request the link request
 * @return GuardedInvocation to be invoked at call site.
 */
public GuardedInvocation noSuchMethod(final CallSiteDescriptor desc, final LinkRequest request) {
    final String       name      = desc.getNameToken(2);
    final FindProperty find      = findProperty(NO_SUCH_METHOD_NAME, true);
    final boolean      scopeCall = isScope() && NashornCallSiteDescriptor.isScope(desc);

    if (find == null) {
        return noSuchProperty(desc, request);
    }

    final boolean explicitInstanceOfCheck = explicitInstanceOfCheck(desc, request);

    final Object value = find.getObjectValue();
    if (!(value instanceof ScriptFunction)) {
        return createEmptyGetter(desc, explicitInstanceOfCheck, name);
    }

    final ScriptFunction func = (ScriptFunction)value;
    final Object         thiz = scopeCall && func.isStrict() ? UNDEFINED : this;
    // TODO: It'd be awesome if we could bind "name" without binding "this".
    // Since we're binding this we must use an identity guard here.
    return new GuardedInvocation(
            MH.dropArguments(
                    MH.constant(
                            ScriptFunction.class,
                            func.createBound(thiz, new Object[] { name })),
                    0,
                    Object.class),
            NashornGuards.combineGuards(
                    NashornGuards.getIdentityGuard(this),
                    NashornGuards.getMapGuard(getMap(), true)));
}
Example #26
Source File: ScriptObject.java    From hottub with GNU General Public License v2.0 5 votes vote down vote up 
private GuardedInvocation createEmptyGetter(final CallSiteDescriptor desc, final boolean explicitInstanceOfCheck, final String name) {
    if (NashornCallSiteDescriptor.isOptimistic(desc)) {
        throw new UnwarrantedOptimismException(UNDEFINED, NashornCallSiteDescriptor.getProgramPoint(desc), Type.OBJECT);
    }

    return new GuardedInvocation(Lookup.emptyGetter(desc.getMethodType().returnType()),
            NashornGuards.getMapGuard(getMap(), explicitInstanceOfCheck), getProtoSwitchPoints(name, null),
            explicitInstanceOfCheck ? null : ClassCastException.class);
}
Example #27
Source File: WithObject.java    From hottub with GNU General Public License v2.0 5 votes vote down vote up 
private GuardedInvocation fixScopeCallSite(final GuardedInvocation link, final String name, final ScriptObject owner) {
    final GuardedInvocation newLink             = fixReceiverType(link, WITHSCOPEFILTER);
    final MethodHandle      expressionGuard     = expressionGuard(name, owner);
    final MethodHandle      filterGuardReceiver = filterGuardReceiver(newLink, WITHSCOPEFILTER);
    return link.replaceMethods(
            filterReceiver(
                    newLink.getInvocation(),
                    WITHSCOPEFILTER),
            NashornGuards.combineGuards(
                    expressionGuard,
                    filterGuardReceiver));
}
Example #28
Source File: SetMethodCreator.java    From hottub with GNU General Public License v2.0 5 votes vote down vote up 
/**
 * Composes from its components an actual guarded invocation that represents the dynamic setter method for the property.
 * @return the composed guarded invocation that represents the dynamic setter method for the property.
 */
GuardedInvocation createGuardedInvocation() {
    // getGuard() and getException() either both return null, or neither does. The reason for that is that now
    // getGuard returns a map guard that casts its argument to ScriptObject, and if that fails, we need to
    // relink on ClassCastException.
    final boolean explicitInstanceOfCheck = NashornGuards.explicitInstanceOfCheck(desc, request);
    return new GuardedInvocation(methodHandle, NashornGuards.getGuard(sobj, property, desc, explicitInstanceOfCheck),
            (SwitchPoint)null, explicitInstanceOfCheck ? null : ClassCastException.class);
}
Example #29
Source File: NativeString.java    From openjdk-8-source with GNU General Public License v2.0 5 votes vote down vote up 
@Override
protected GuardedInvocation findGetIndexMethod(final CallSiteDescriptor desc, final LinkRequest request) {
    final Object self = request.getReceiver();
    final Class<?> returnType = desc.getMethodType().returnType();

    if (returnType == Object.class && (self instanceof String || self instanceof ConsString)) {
        try {
            MethodHandle mh = MH.findStatic(MethodHandles.lookup(), NativeString.class, "get", desc.getMethodType());
            return new GuardedInvocation(mh, NashornGuards.getInstanceOf2Guard(String.class, ConsString.class));
        } catch (final LookupException e) {
            // Shouldn't happen. Fall back to super
        }
    }
    return super.findGetIndexMethod(desc, request);
}
Example #30
Source File: NativeString.java    From openjdk-8 with GNU General Public License v2.0 5 votes vote down vote up 
@Override
protected GuardedInvocation findGetIndexMethod(final CallSiteDescriptor desc, final LinkRequest request) {
    final Object self = request.getReceiver();
    final Class<?> returnType = desc.getMethodType().returnType();

    if (returnType == Object.class && (self instanceof String || self instanceof ConsString)) {
        try {
            MethodHandle mh = MH.findStatic(MethodHandles.lookup(), NativeString.class, "get", desc.getMethodType());
            return new GuardedInvocation(mh, NashornGuards.getInstanceOf2Guard(String.class, ConsString.class));
        } catch (final LookupException e) {
            // Shouldn't happen. Fall back to super
        }
    }
    return super.findGetIndexMethod(desc, request);
}