Java JExpr类代码示例

import com.helger.jcodemodel.JExpr; //导入依赖的package包/类
private void setOnRequestPermissionsResultMethod() {
    onRequestPermissionsResultMethod = holder().getGeneratedClass().method(JMod.PUBLIC, getCodeModel().VOID, "onRequestPermissionsResult");
    onRequestPermissionsResultMethod.annotate(Override.class);

    onRequestPermissionsResultRequestCodeParam = onRequestPermissionsResultMethod.param(getCodeModel().INT, "requestCode");
    JVar permissionsParam = onRequestPermissionsResultMethod.param(getJClass("java.lang.String").array(), "permissions");
    onRequestPermissionsResultGrantResultsParam = onRequestPermissionsResultMethod.param(getCodeModel().INT.array(), "grantResults");

    JBlock onRequestPermissionsResultMethodBody = onRequestPermissionsResultMethod.body();

    onRequestPermissionsResultMethodBody.invoke(JExpr._super(), "onRequestPermissionsResult")
            .arg(onRequestPermissionsResultRequestCodeParam)
            .arg(permissionsParam)
            .arg(onRequestPermissionsResultGrantResultsParam);

    onRequestPermissionsResultMethodDelegateBlock = onRequestPermissionsResultMethodBody.blockVirtual();

    onRequestPermissionsResultMethodBody.assign(getPermissionDispatcherCalledField(), JExpr.FALSE);
}
 

import com.helger.jcodemodel.JExpr; //导入依赖的package包/类
JMethod buildFactory(Map<String, JMethod> constructorMethods) throws JClassAlreadyExistsException {
    JDefinedClass factory = buildFactoryClass(constructorMethods);

    JFieldVar factoryField = environment.buildValueClassField(JMod.PRIVATE | JMod.STATIC | JMod.FINAL, factory, "FACTORY");
    JAnnotationUse fieldAnnotationUse = factoryField.annotate(SuppressWarnings.class);
    JAnnotationArrayMember paramArray = fieldAnnotationUse.paramArray("value");
    paramArray.param("unchecked");
    paramArray.param("rawtypes");

    factoryField.init(JExpr._new(factory));
    JMethod factoryMethod = environment.buildValueClassMethod(Source.toJMod(environment.factoryMethodAccessLevel()) | JMod.STATIC, "factory");
    Source.annotateNonnull(factoryMethod);
    JAnnotationUse methodAnnotationUse = factoryMethod.annotate(SuppressWarnings.class);
    methodAnnotationUse.param("value", "unchecked");
    for (JTypeVar visitorTypeParameter: environment.getValueTypeParameters()) {
        JTypeVar typeParameter = factoryMethod.generify(visitorTypeParameter.name());
        typeParameter.boundLike(visitorTypeParameter);
    }
    AbstractJClass usedValueClassType = environment.wrappedValueClassType(factoryMethod.typeParams());
    factoryMethod.type(environment.visitor(usedValueClassType, usedValueClassType, types._RuntimeException).getVisitorType());
    factoryMethod.body()._return(factoryField);
    return factoryMethod;
}
 

import com.helger.jcodemodel.JExpr; //导入依赖的package包/类
private JFieldVar buildHashCodeCachedValueField(Serialization serialization) {
    if (!environment.hashCodeCaching().enabled())
        throw new IllegalStateException("Unsupported method evaluation to cache hash code: " + environment.hashCodeCaching());
    else {
        boolean isSerializable = serialization.isSerializable();
        boolean precomputes = environment.hashCodeCaching() == Caching.PRECOMPUTE;
        int mods = JMod.PRIVATE;
        mods = !isSerializable ? mods : mods | JMod.TRANSIENT;
        if (!precomputes)
            return environment.buildValueClassField(mods, types._int, "hashCodeCachedValue", JExpr.lit(0));
        else {
            mods = isSerializable ? mods : mods | JMod.FINAL;
            return environment.buildValueClassField(mods, types._int, "hashCodeCachedValue");
        }
    }
}
 

import com.helger.jcodemodel.JExpr; //导入依赖的package包/类
void buildProtectedConstructor(Serialization serialization) {
    JMethod constructor = environment.buildValueClassConstructor(JMod.PROTECTED);
    JAnnotationUse annotation = constructor.annotate(SuppressWarnings.class);
    annotation.paramArray("value", "null");
    AbstractJClass unwrappedUsedValueClassType = environment.unwrappedValueClassTypeInsideValueClass();
    JVar param = constructor.param(unwrappedUsedValueClassType, "implementation");
    Source.annotateNonnull(param);
    if (isError) {
        constructor.body()._throw(JExpr._new(types._UnsupportedOperationException));
    } else {
        JConditional nullCheck = constructor.body()._if(JExpr.ref("implementation").eq(JExpr._null()));
        JInvocation nullPointerExceptionConstruction = JExpr._new(types._NullPointerException);
        nullPointerExceptionConstruction.arg(JExpr.lit("Argument shouldn't be null: 'implementation' argument in class constructor invocation: " + environment.valueClassQualifiedName()));
        nullCheck._then()._throw(nullPointerExceptionConstruction);

        if (environment.hashCodeCaching().enabled())
            constructor.body().assign(JExpr.refthis(hashCodeCachedValueField), param.ref(hashCodeCachedValueField));
        constructor.body().assign(JExpr.refthis(acceptorField), param.ref(acceptorField));
    }
}
 

import com.helger.jcodemodel.JExpr; //导入依赖的package包/类
void generatePredicate(String name, PredicateConfigutation predicate) {
    JMethod predicateMethod = environment.buildValueClassMethod(Source.toJMod(predicate.accessLevel()) | JMod.FINAL, name);
    predicateMethod.type(types._boolean);
    if (isError) {
        predicateMethod.body()._throw(JExpr._new(types._UnsupportedOperationException));
    } else {
        JMethod implementation = environment.buildAcceptingInterfaceMethod(JMod.PUBLIC, name);
        implementation.type(types._boolean);

        predicateMethod.body()._return(JExpr.refthis(acceptorField).invoke(implementation));

        for (JMethod interfaceMethod1: environment.visitorDefinition().methodDefinitions()) {
            JDefinedClass caseClass = caseClasses.get(interfaceMethod1.name());
            predicateMethod = caseClass.method(JMod.PUBLIC | JMod.FINAL, types._boolean, name);
            predicateMethod.annotate(Override.class);

            boolean result = predicate.isTrueFor(interfaceMethod1);
            predicateMethod.body()._return(JExpr.lit(result));
        }
    }
}
 

import com.helger.jcodemodel.JExpr; //导入依赖的package包/类
private void appendNonnullPrimitive(AbstractJType type, IJExpression value1, IJExpression value2, boolean isLast) {
    IJExpression equalsCondition;
    IJExpression notEqualsCondition;
    if (!type.name().equals("float") && !type.name().equals("doable")) {
        equalsCondition = value1.eq(value2);
        notEqualsCondition = value1.ne(value2);
    } else {
        IJExpression epsilon = type.name().equals("float") ? JExpr.lit(floatCustomization.floatEpsilon()) : JExpr.lit(floatCustomization.doubleEpsilon());
        JInvocation invocation = types._Math.staticInvoke("abs");
        invocation.arg(value1.minus(value2));
        equalsCondition = invocation.lte(epsilon);
        notEqualsCondition = invocation.gt(epsilon);
    }
    if (isLast) {
        body._return(equalsCondition);
    } else {
        JConditional _if = body._if(notEqualsCondition);
        _if._then()._return(JExpr.FALSE);
    }
}
 

import com.helger.jcodemodel.JExpr; //导入依赖的package包/类
private void appendNonnullArray(IJExpression value1, IJExpression value2, AbstractJType type) {
    JInvocation invocation = types._Math.staticInvoke("min");
    invocation.arg(value1.ref("length"));
    invocation.arg(value2.ref("length"));
    JVar length = body.decl(types._int, nameSource.get("length"), invocation);
    VariableNameSource localNames = nameSource.forBlock();
    JForLoop _for = body._for();
    JVar i = _for.init(types._int, localNames.get("i"), JExpr.lit(0));
    _for.test(i.lt(length));
    _for.update(i.incr());
    Body forBody = new Body(resultVariable, _for.body(), localNames);
    if (type.elementType().isReference())
        forBody.appendNullableValue(type.elementType(), value1.component(i), value2.component(i));
    else
        forBody.appendNotNullValue(type.elementType(), value1.component(i), value2.component(i));
    appendNotNullValue(types._int, value1.ref("length"), value2.ref("length"));
}
 

import com.helger.jcodemodel.JExpr; //导入依赖的package包/类
@Override
public Void visitEnum_def(Enum_defContext ctx) {
    try {
        String name = ctx.enum_name().IDENTIFIER().getText();
        ProtoContext pkgCtx = (ProtoContext) ctx.getParent();
        String pkg = pkgCtx.package_def().package_name().QUALIFIED_IDENTIFIER().getText();
        JPackage jPackage = codeModel._package( pkg );
        JDefinedClass m = codeModel._package( pkg )._enum( name );
        JDefinedClass container = jPackage._getClass( containerName );

        String tag = "tag";
        m.field( JMod.PUBLIC | JMod.FINAL, codeModel.INT, tag );

        JMethod constructor = m.constructor( JMod.PRIVATE );
        constructor.param( codeModel.INT, tag );
        constructor.body().assign( JExpr._this().ref( tag ), JExpr.ref( tag ) );

        addDenifition( container, m );

        logger.info( "Enum({}.{})", m._package().name(), m.name() );
        return super.visitEnum_def( ctx );
    }
    catch ( JClassAlreadyExistsException err ) {
        throw new RuntimeException( err );
    }
}
 

import com.helger.jcodemodel.JExpr; //导入依赖的package包/类
@Override
public Void visitEnum_member_tag(Enum_member_tagContext ctx) {
    int enumTag = Integer.parseInt( ctx.enum_tag().INTEGER_LITERAL().getText() );
    String enumMember = ctx.enum_member().IDENTIFIER().getText();

    Enum_defContext enumCtx = (Enum_defContext) ctx.getParent();
    String enumName = enumCtx.enum_name().IDENTIFIER().getText();
    ProtoContext pkgCtx = (ProtoContext) enumCtx.getParent();
    String pkg = pkgCtx.package_def().package_name().QUALIFIED_IDENTIFIER().getText();

    JDefinedClass m = codeModel._package( pkg )._getClass( enumName );
    JEnumConstant enumConstant = m.enumConstant( enumMember );
    enumConstant.arg( JExpr.lit( enumTag ) ).annotate( JsonProperty.class ).param( "index", enumTag );

    logger.info( "\t +-> {}.{} {}", m._package().name(), m.name(), enumMember );
    return super.visitEnum_member_tag( ctx );
}
 

import com.helger.jcodemodel.JExpr; //导入依赖的package包/类
public void setOnRequestPermissionsResultDelegateCall(AbstractJClass delegateClass) {
    if (onRequestPermissionsResultMethod != null) {
        return;
    }

    setOnRequestPermissionsResultMethod();

    onRequestPermissionsResultMethodDelegateBlock.add(delegateClass.staticInvoke("onRequestPermissionsResult")
            .arg(JExpr._this())
            .arg(onRequestPermissionsResultRequestCodeParam)
            .arg(onRequestPermissionsResultGrantResultsParam));
}
 

import com.helger.jcodemodel.JExpr; //导入依赖的package包/类
public void setOnActivityResultDelegateCall(AbstractJClass delegateClass) {
    if (onActivityResultMethod != null) {
        return;
    }

    setOnActivityResultMethod();

    onActivityResultMethodDelegateBlock.add(delegateClass.staticInvoke("onActivityResult")
            .arg(JExpr._this())
            .arg(onActivityResultRequestCodeParam));
}
 

import com.helger.jcodemodel.JExpr; //导入依赖的package包/类
private void setPermissionMethods(Element element, EComponentHolder holder, AbstractJClass delegateClass, JFieldVar dispatcherCalledField) {
    ExecutableElement executableElement = (ExecutableElement) element;

    JMethod overrideMethod = codeModelHelper.overrideAnnotatedMethod(executableElement, holder);
    JBlock previousMethodBody = codeModelHelper.removeBody(overrideMethod);

    JBlock overrideMethodBody = overrideMethod.body();
    JConditional conditional = overrideMethodBody._if(dispatcherCalledField.not());

    JBlock thenBlock = conditional._then();
    thenBlock.assign(dispatcherCalledField, JExpr.TRUE);
    String delegateMethodName = element.getSimpleName().toString() + "WithPermissionCheck";

    JInvocation delegateCall = delegateClass.staticInvoke(delegateMethodName)
            .arg(JExpr._this());

    overrideMethod.params().forEach(delegateCall::arg);

    if (overrideMethod.hasVarArgs()) {
        JVar jVar = overrideMethod.varParam();
        if (jVar != null) {
            delegateCall.arg(jVar);
        }
    }

    if (!removeRuntimePermissionsAnnotation(holder.getGeneratedClass())) {
        codeModelHelper.copyAnnotation(overrideMethod, findAnnotation(element));
    }

    thenBlock.add(delegateCall);

    JBlock elseBlock = conditional._else();
    elseBlock.assign(dispatcherCalledField, JExpr.FALSE);
    elseBlock.add(previousMethodBody);
}
 

import com.helger.jcodemodel.JExpr; //导入依赖的package包/类
void appendNullableValue(AbstractJType type, IJExpression value) {
    if (!type.isReference())
        throw new AssertionError("appendNullableValue called for non-reference type");
    else {
        JConditional _if = body._if(value.eq(JExpr._null()));
        Body thenBody = new Body(result, _if._then(), nameSource);
        thenBody.appendNotNullValue(types._int, JExpr.lit(0));
        Body elseBody = new Body(result, _if._else(), nameSource);
        elseBody.appendNotNullValue(type, value);
    }
}
 

import com.helger.jcodemodel.JExpr; //导入依赖的package包/类
void buildPrivateConstructor() {
    if (!isError) {
        JMethod constructor = environment.buildValueClassConstructor(JMod.PRIVATE);
        JVar acceptorParam = constructor.param(acceptorField.type(), acceptorField.name());
        if (environment.hashCodeCaching() == Caching.PRECOMPUTE) {
            JInvocation invocation = acceptorParam.invoke(hashCodeAcceptorMethodName());
            constructor.body().assign(JExpr.refthis(hashCodeCachedValueField), invocation);
        }
        constructor.body().assign(JExpr.refthis(acceptorField.name()), acceptorParam);
    }
}
 

import com.helger.jcodemodel.JExpr; //导入依赖的package包/类
void buildAcceptMethod() {
    JMethod acceptMethod = environment.buildValueClassMethod(Source.toJMod(environment.acceptMethodAccessLevel()) | JMod.FINAL, environment.acceptMethodName());

    JTypeVar visitorResultTypeParameter = environment.visitorDefinition().getResultTypeParameter();
    AbstractJClass resultType;
    if (visitorResultTypeParameter == null)
        resultType = types._Object;
    else {
        JTypeVar resultTypeVar = acceptMethod.generify(visitorResultTypeParameter.name());
        resultTypeVar.boundLike(visitorResultTypeParameter);
        resultType = resultTypeVar;
    }
    acceptMethod.type(resultType);

    JTypeVar visitorExceptionTypeParameter = environment.visitorDefinition().getExceptionTypeParameter();
    JTypeVar exceptionType = null;
    if (visitorExceptionTypeParameter != null) {
        JTypeVar exceptionTypeVar = acceptMethod.generify(visitorExceptionTypeParameter.name());
        exceptionTypeVar.boundLike(visitorExceptionTypeParameter);
        exceptionType = exceptionTypeVar;
        acceptMethod._throws(exceptionType);
    }

    AbstractJClass usedValueClassType = environment.wrappedValueClassTypeInsideValueClass();
    VisitorDefinition.VisitorUsage usedVisitorType = environment.visitor(usedValueClassType, resultType, exceptionType);
    acceptMethod.param(usedVisitorType.getVisitorType(), "visitor");
    if (isError) {
        acceptMethod.body()._throw(JExpr._new(types._UnsupportedOperationException));
    } else {
        JInvocation invocation = acceptorField.invoke(environment.acceptMethodName());
        invocation.arg(JExpr.ref("visitor"));
        acceptMethod.body()._return(invocation);
    }
}