com.oracle.truffle.js.nodes.access.JSProxyHasPropertyNode Maven / Gradle / Ivy
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package com.oracle.truffle.js.nodes.access;
import com.oracle.truffle.api.CompilerDirectives;
import com.oracle.truffle.api.HostCompilerDirectives.InliningCutoff;
import com.oracle.truffle.api.dsl.Cached;
import com.oracle.truffle.api.dsl.ImportStatic;
import com.oracle.truffle.api.dsl.NeverDefault;
import com.oracle.truffle.api.dsl.Specialization;
import com.oracle.truffle.api.profiles.InlinedBranchProfile;
import com.oracle.truffle.api.profiles.InlinedConditionProfile;
import com.oracle.truffle.js.nodes.JavaScriptBaseNode;
import com.oracle.truffle.js.nodes.cast.JSToBooleanNode;
import com.oracle.truffle.js.nodes.cast.JSToPropertyKeyNode;
import com.oracle.truffle.js.nodes.function.JSFunctionCallNode;
import com.oracle.truffle.js.nodes.interop.ForeignObjectPrototypeNode;
import com.oracle.truffle.js.runtime.Errors;
import com.oracle.truffle.js.runtime.JSArguments;
import com.oracle.truffle.js.runtime.JSContext;
import com.oracle.truffle.js.runtime.JSRuntime;
import com.oracle.truffle.js.runtime.builtins.JSProxy;
import com.oracle.truffle.js.runtime.interop.JSInteropUtil;
import com.oracle.truffle.js.runtime.objects.JSDynamicObject;
import com.oracle.truffle.js.runtime.objects.JSObject;
import com.oracle.truffle.js.runtime.objects.Null;
import com.oracle.truffle.js.runtime.objects.Undefined;
@ImportStatic({JSProxy.class})
public abstract class JSProxyHasPropertyNode extends JavaScriptBaseNode {
@Child protected GetMethodNode trapGetter;
@Child private JSFunctionCallNode callNode;
@Child private JSToBooleanNode toBooleanNode;
@Child private JSToPropertyKeyNode toPropertyKeyNode;
@Child private ForeignObjectPrototypeNode foreignObjectPrototypeNode;
public JSProxyHasPropertyNode(JSContext context) {
this.callNode = JSFunctionCallNode.createCall();
this.trapGetter = GetMethodNode.create(context, JSProxy.HAS);
this.toPropertyKeyNode = JSToPropertyKeyNode.create();
this.toBooleanNode = JSToBooleanNode.create();
}
@NeverDefault
public static JSProxyHasPropertyNode create(JSContext context) {
return JSProxyHasPropertyNodeGen.create(context);
}
public abstract boolean executeWithTargetAndKeyBoolean(Object shared, Object key);
@Specialization
protected boolean doGeneric(JSDynamicObject proxy, Object key,
@Cached InlinedConditionProfile trapFunProfile,
@Cached InlinedBranchProfile errorBranch) {
assert JSProxy.isJSProxy(proxy);
Object propertyKey = toPropertyKeyNode.execute(key);
if (JSRuntime.isPrivateSymbol(propertyKey)) {
return false;
}
JSDynamicObject handler = JSProxy.getHandler(proxy);
if (handler == Null.instance) {
errorBranch.enter(this);
throw Errors.createTypeErrorProxyRevoked(JSProxy.HAS, this);
}
Object target = JSProxy.getTarget(proxy);
Object trapFun = trapGetter.executeWithTarget(handler);
if (trapFunProfile.profile(this, trapFun == Undefined.instance)) {
if (JSDynamicObject.isJSDynamicObject(target)) {
return JSObject.hasProperty((JSDynamicObject) target, propertyKey);
} else {
boolean result = JSInteropUtil.hasProperty(target, propertyKey);
if (!result) {
result = maybeHasInPrototype(target, propertyKey);
}
return result;
}
} else {
Object callResult = callNode.executeCall(JSArguments.create(handler, trapFun, target, propertyKey));
boolean trapResult = toBooleanNode.executeBoolean(callResult);
if (!trapResult) {
if (!JSProxy.checkPropertyIsSettable(target, propertyKey)) {
errorBranch.enter(this);
throw Errors.createTypeError("Proxy can't successfully access a non-writable, non-configurable property", this);
}
}
return trapResult;
}
}
@InliningCutoff
private boolean maybeHasInPrototype(Object target, Object propertyKey) {
assert JSRuntime.isPropertyKey(propertyKey);
if (getLanguage().getJSContext().getLanguageOptions().hasForeignObjectPrototype()) {
if (foreignObjectPrototypeNode == null) {
CompilerDirectives.transferToInterpreterAndInvalidate();
foreignObjectPrototypeNode = insert(ForeignObjectPrototypeNode.create());
}
JSDynamicObject prototype = foreignObjectPrototypeNode.execute(target);
return JSObject.hasProperty(prototype, propertyKey);
}
return false;
}
}
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