com.sun.codemodel.JBlock类的使用及代码示例

x33g5p2x  于2022-01-21 转载在 其他  
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本文整理了Java中com.sun.codemodel.JBlock类的一些代码示例，展示了JBlock类的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。JBlock类的具体详情如下：
包路径：com.sun.codemodel.JBlock
类名称：JBlock

JBlock介绍

[英]A block of Java code, which may contain statements and local declarations.

JBlock contains a large number of factory methods that creates new statements/declarations. Those newly created statements/declarations are inserted into the #pos(). The position advances one every time you add a new instruction.
[中]Java代码块，其中可能包含语句和本地声明。
JBlock包含大量创建新语句/声明的工厂方法。这些新创建的语句/声明将插入到#pos（）中。每次添加新指令时，该位置将前进一步。

代码示例

代码示例来源：origin: joelittlejohn/jsonschema2pojo

private void addFactoryMethod(JDefinedClass _enum, JType backingType) {
  JFieldVar quickLookupMap = addQuickLookupMap(_enum, backingType);
  JMethod fromValue = _enum.method(JMod.PUBLIC | JMod.STATIC, _enum, "fromValue");
  JVar valueParam = fromValue.param(backingType, "value");
  JBlock body = fromValue.body();
  JVar constant = body.decl(_enum, "constant");
  constant.init(quickLookupMap.invoke("get").arg(valueParam));
  JConditional _if = body._if(constant.eq(JExpr._null()));
  JInvocation illegalArgumentException = JExpr._new(_enum.owner().ref(IllegalArgumentException.class));
  JExpression expr = valueParam;
  // if string no need to add ""
  if(!isString(backingType)){
    expr = expr.plus(JExpr.lit(""));
  }
  illegalArgumentException.arg(expr);
  _if._then()._throw(illegalArgumentException);
  _if._else()._return(constant);
  ruleFactory.getAnnotator().enumCreatorMethod(_enum, fromValue);
}

代码示例来源：origin: joelittlejohn/jsonschema2pojo

private void addHashCode(JDefinedClass jclass, JsonNode node) {
  Map<String, JFieldVar> fields = removeFieldsExcludedFromEqualsAndHashCode(jclass.fields(), node);
  JMethod hashCode = jclass.method(JMod.PUBLIC, int.class, "hashCode");
  JBlock body = hashCode.body();
  JVar result = body.decl(jclass.owner().INT, "result", JExpr.lit(1));
    JFieldRef fieldRef = JExpr.refthis(fieldVar.name());
        fieldHash = JExpr.cast(jclass.owner().INT, fieldRef.xor(fieldRef.shrz(JExpr.lit(32))));
      } else if ("boolean".equals(fieldVar.type().name())) {
        fieldHash = JOp.cond(fieldRef, JExpr.lit(1), JExpr.lit(0));
      fieldHash = jclass.owner().ref(Arrays.class).staticInvoke("hashCode").arg(fieldRef);
    } else {
      fieldHash = JOp.cond(fieldRef.eq(JExpr._null()), JExpr.lit(0), fieldRef.invoke("hashCode"));
    body.assign(result, result.mul(JExpr.lit(31)).plus(fieldHash));
  if (!jclass._extends().fullName().equals(Object.class.getName())) {
    body.assign(result, result.mul(JExpr.lit(31)).plus(JExpr._super().invoke("hashCode")));
  body._return(result);
  hashCode.annotate(Override.class);

代码示例来源：origin: joelittlejohn/jsonschema2pojo

private void addOverrideBuilder(JDefinedClass thisJDefinedClass, JMethod parentBuilder, JVar parentParam) {

    if (thisJDefinedClass.getMethod(parentBuilder.name(), new JType[] {parentParam.type()}) == null) {

      JMethod builder = thisJDefinedClass.method(parentBuilder.mods().getValue(), thisJDefinedClass, parentBuilder.name());
      builder.annotate(Override.class);

      JVar param = builder.param(parentParam.type(), parentParam.name());
      JBlock body = builder.body();
      body.invoke(JExpr._super(), parentBuilder).arg(param);
      body._return(JExpr._this());

    }
  }
}

代码示例来源：origin: joelittlejohn/jsonschema2pojo

private void addBuilder(JDefinedClass jclass, JType propertyType, JFieldVar field) {
  JMethod builder = jclass.method(JMod.PUBLIC, jclass, "withAdditionalProperty");
  JVar nameParam = builder.param(String.class, "name");
  JVar valueParam = builder.param(propertyType, "value");
  JBlock body = builder.body();
  JInvocation mapInvocation = body.invoke(JExpr._this().ref(field), "put");
  mapInvocation.arg(nameParam);
  mapInvocation.arg(valueParam);
  body._return(JExpr._this());
}

代码示例来源：origin: joelittlejohn/jsonschema2pojo

private JMethod addPublicGetMethod(JDefinedClass jclass, JMethod internalGetMethod, JFieldRef notFoundValue) {
  JMethod method = jclass.method(PUBLIC, jclass.owner()._ref(Object.class), GETTER_NAME);
  JTypeVar returnType = method.generify("T");
  method.type(returnType);
  Models.suppressWarnings(method, "unchecked");
  JVar nameParam = method.param(String.class, "name");
  JBlock body = method.body();
  JVar valueVar = body.decl(jclass.owner()._ref(Object.class), "value",
      invoke(internalGetMethod).arg(nameParam).arg(notFoundValue));
  JConditional found = method.body()._if(notFoundValue.ne(valueVar));
  found._then()._return(cast(returnType, valueVar));
  JBlock notFound = found._else();
  JMethod getAdditionalProperties = jclass.getMethod("getAdditionalProperties", new JType[] {});
  if (getAdditionalProperties != null) {
    notFound._return(cast(returnType, invoke(getAdditionalProperties).invoke("get").arg(nameParam)));
  } else {
    notFound._throw(illegalArgumentInvocation(jclass, nameParam));
  }
  return method;
}

代码示例来源：origin: joelittlejohn/jsonschema2pojo

JClass stringBuilderClass = jclass.owner().ref(StringBuilder.class);
JVar sb = body.decl(stringBuilderClass, "sb", JExpr._new(stringBuilderClass));
body.add(sb
    .invoke("append").arg(jclass.dotclass().invoke("getName"))
    .invoke("append").arg(JExpr.lit('@'))
    .invoke("append").arg(
        jclass.owner().ref(Integer.class).staticInvoke("toHexString").arg(
            jclass.owner().ref(System.class).staticInvoke("identityHashCode").arg(JExpr._this())))
  JVar baseLength = body.decl(jclass.owner().INT, "baseLength", sb.invoke("length"));
  JVar superString = body.decl(jclass.owner().ref(String.class), "superString", JExpr._super().invoke("toString"));
  JBlock superToStringBlock = body._if(superString.ne(JExpr._null()))._then();
  JVar contentStart = superToStringBlock.decl(jclass.owner().INT, "contentStart",
      superString.invoke("indexOf").arg(JExpr.lit('[')));
  JVar contentEnd = superToStringBlock.decl(jclass.owner().INT, "contentEnd",
  JConditional superToStringInnerConditional = superToStringBlock._if(
  superToStringInnerConditional._then().add(
  superToStringInnerConditional._else().add(sb.invoke("append").arg(superString));
  body._if(sb.invoke("length").gt(baseLength))
      ._then().add(sb.invoke("append").arg(JExpr.lit(',')));
  body.add(sb.invoke("append").arg(fieldVar.name()));

代码示例来源：origin: joelittlejohn/jsonschema2pojo

private void addEquals(JDefinedClass jclass, JsonNode node) {
  Map<String, JFieldVar> fields = removeFieldsExcludedFromEqualsAndHashCode(jclass.fields(), node);
  JMethod equals = jclass.method(JMod.PUBLIC, boolean.class, "equals");
  JVar otherObject = equals.param(Object.class, "other");
  JBlock body = equals.body();
  body._if(otherObject.eq(JExpr._this()))._then()._return(JExpr.TRUE);
  body._if(otherObject._instanceof(jclass).eq(JExpr.FALSE))._then()._return(JExpr.FALSE);
  JVar rhsVar = body.decl(jclass, "rhs").init(JExpr.cast(jclass, otherObject));
  JExpression result = JExpr.lit(true);
  if (!jclass._extends().fullName().equals(Object.class.getName())) {
    result = result.cand(JExpr._super().invoke("equals").arg(rhsVar));
      fieldEquals = jclass.owner().ref(Arrays.class).staticInvoke("equals").arg(thisFieldRef).arg(otherFieldRef);
    } else {
      fieldEquals = thisFieldRef.eq(otherFieldRef).cor(
  body._return(result);
  equals.annotate(Override.class);

代码示例来源：origin: bonitasoft/bonita-engine

public JMethod addListSetter(final JDefinedClass definedClass, final JFieldVar field) {
  final JMethod method = definedClass.method(JMod.PUBLIC, Void.TYPE, getSetterName(field));
  method.param(field.type(), field.name());
  final JFieldRef thisField = JExpr._this().ref(field.name());
  final JConditional ifListIsNull = method.body()._if(thisField.eq(JExpr._null()));
  ifListIsNull._then().assign(JExpr._this().ref(field.name()), JExpr.ref(field.name()));
  final JBlock elseBlock = ifListIsNull._else();
  final JVar copyVar = elseBlock.decl(field.type(), "copy", JExpr._new(getModel().ref(ArrayList.class)).arg(field));
  elseBlock.invoke(JExpr._this().ref(field.name()), "clear");
  elseBlock.invoke(JExpr._this().ref(field.name()), "addAll").arg(copyVar);
  return method;
}

代码示例来源：origin: joelittlejohn/jsonschema2pojo

private JMethod addPublicWithMethod(JDefinedClass jclass, JMethod internalSetMethod) {
  JMethod method = jclass.method(PUBLIC, jclass, BUILDER_NAME);
  JVar nameParam = method.param(String.class, "name");
  JVar valueParam = method.param(Object.class, "value");
  JBlock body = method.body();
  JBlock notFound = body._if(JOp.not(invoke(internalSetMethod).arg(nameParam).arg(valueParam)))._then();
  // if we have additional properties, then put value.
  JMethod getAdditionalProperties = jclass.getMethod("getAdditionalProperties", new JType[] {});
  if (getAdditionalProperties != null) {
    JType additionalPropertiesType = ((JClass) (getAdditionalProperties.type())).getTypeParameters().get(1);
    notFound.add(invoke(getAdditionalProperties).invoke("put").arg(nameParam)
        .arg(cast(additionalPropertiesType, valueParam)));
  }
  // else throw exception.
  else {
    notFound._throw(illegalArgumentInvocation(jclass, nameParam));
  }
  body._return(_this());
  return method;
}

代码示例来源：origin: joelittlejohn/jsonschema2pojo

private JMethod addInternalGetMethodJava6(JDefinedClass jclass, JsonNode propertiesNode) {
  JMethod method = jclass.method(PROTECTED, jclass.owner()._ref(Object.class), DEFINED_GETTER_NAME);
  JVar nameParam = method.param(String.class, "name");
  JVar notFoundParam = method.param(jclass.owner()._ref(Object.class), "notFoundValue");
  JBlock body = method.body();
  JConditional propertyConditional = null;
      JType propertyType = jclass.fields().get(fieldName).type();
      JExpression condition = lit(propertyName).invoke("equals").arg(nameParam);
      if (propertyConditional == null) {
        propertyConditional = body._if(condition);
      } else {
        propertyConditional = propertyConditional._elseif(condition);
      JMethod propertyGetter = jclass.getMethod(getGetterName(propertyName, propertyType, node), new JType[] {});
      propertyConditional._then()._return(invoke(propertyGetter));
    JDefinedClass parentClass = (JDefinedClass) extendsType;
    JMethod parentMethod = parentClass.getMethod(DEFINED_GETTER_NAME,
        new JType[] { parentClass.owner()._ref(String.class), parentClass.owner()._ref(Object.class) });
    lastBlock._return(_super().invoke(parentMethod).arg(nameParam).arg(notFoundParam));
  } else {
    lastBlock._return(notFoundParam);

代码示例来源：origin: e-biz/androidkickstartr

jClass._extends(ref.fragmentPagerAdapter());
if (hasLocationsField) {
  locationsField = jClass.field(JMod.PRIVATE, ref.string().array(), "locations");
constructorBody.directStatement("super(fm);");
  constructorBody.assign(JExpr._this().ref("locations"), locationsField);
  getCountMethodBody._return(locationsField.ref("length"));
} else {
  getCountMethodBody.directStatement("return 3;");
JVar fragmentVar = getItemMethodBody.decl(ref.fragment(), "fragment", JExpr._new(ref.ref(sampleFragmentPackage)));
JVar bundleVar = getItemMethodBody.decl(ref.bundle(), "bundle", JExpr._new(ref.bundle()));
  getItemMethodBody.directStatement("bundle.putString(\"label\", locations[position]);");
} else {
  getItemMethodBody.directStatement("bundle.putString(\"label\", \"LABEL \" + position);");
getItemMethodBody.invoke(fragmentVar, "setArguments").arg(bundleVar);
getItemMethodBody._return(fragmentVar);

代码示例来源：origin: org.jvnet.jaxbvalidation/jaxbvalidation-core

public JStatement validate(final DatabindableDatatype datatype, final JCodeModel codeModel, final JDefinedClass theClass, final JExpression value, final JAssignmentTarget problem)
 {
  final JBlock block = newBlock();
  final JConditional ifValueIsNmtoken = block._if(codeModel.ref(XmlNames.class).staticInvoke("isNmtoken").arg(value));
  ifValueIsNmtoken._then().directStatement("// Value is a valid Nmtoken");
  ifValueIsNmtoken._else().
   assign(problem, JExpr._new(codeModel.ref(NmtokenProblem.class)).arg(value));
  return block;
 }
}

代码示例来源：origin: joelittlejohn/jsonschema2pojo

private JMethod addInternalSetMethodJava7(JDefinedClass jclass, JsonNode propertiesNode) {
  JMethod method = jclass.method(PROTECTED, jclass.owner().BOOLEAN, DEFINED_SETTER_NAME);
  JVar nameParam = method.param(String.class, "name");
  JVar valueParam = method.param(Object.class, "value");
  JBlock body = method.body();
  JSwitch propertySwitch = body._switch(nameParam);
  if (propertiesNode != null) {
    for (Iterator<Map.Entry<String, JsonNode>> properties = propertiesNode.fields(); properties.hasNext();) {
      Map.Entry<String, JsonNode> property = properties.next();
      String propertyName = property.getKey();
      JsonNode node = property.getValue();
      String fieldName = ruleFactory.getNameHelper().getPropertyName(propertyName, node);
      JType propertyType = jclass.fields().get(fieldName).type();
      addSetPropertyCase(jclass, propertySwitch, propertyName, propertyType, valueParam, node);
    }
  }
  JBlock defaultBlock = propertySwitch._default().body();
  JClass extendsType = jclass._extends();
  if (extendsType != null && extendsType instanceof JDefinedClass) {
    JDefinedClass parentClass = (JDefinedClass) extendsType;
    JMethod parentMethod = parentClass.getMethod(DEFINED_SETTER_NAME,
        new JType[] { parentClass.owner()._ref(String.class), parentClass.owner()._ref(Object.class) });
    defaultBlock._return(_super().invoke(parentMethod).arg(nameParam).arg(valueParam));
  } else {
    defaultBlock._return(FALSE);
  }
  return method;
}

代码示例来源：origin: io.konig/konig-schemagen

private void generateCurieMethod(JCodeModel model, JDefinedClass dc, JVar mapField) {
  JClass stringBuilderClass = model.ref(StringBuilder.class);
  JClass namespaceClass = model.ref(Namespace.class);
  
  JMethod method = dc.method(JMod.PUBLIC | JMod.STATIC, String.class, "curie");
  JVar uriVar = method.param(URI.class, "uri");
  
  JVar nsVar = method.body().decl(namespaceClass, "ns", mapField.invoke("get").arg(uriVar.invoke("getNamespace")));
  
  method.body()._if(JOp.eq(nsVar, JExpr._null()))._then()._return(uriVar.invoke("stringValue"));
  
  JVar builderVar = method.body().decl(stringBuilderClass, "builder", JExpr._new(stringBuilderClass));
  
  method.body().add(builderVar.invoke("add").arg(nsVar.invoke("getPrefix")));
  method.body().add(builderVar.invoke("add").arg(JExpr.lit(':')));
  method.body().add(builderVar.invoke("add").arg(uriVar.invoke("getLocalName")));
  
  method.body()._return(builderVar.invoke("toString"));
  
}

代码示例来源：origin: bonitasoft/bonita-engine

private JMethod addListMethod(final JDefinedClass definedClass, final Field field, final String listMethodName, final String parameterName) {
  final JClass fieldClass = toJavaClass(field);
  final StringBuilder builder = new StringBuilder(parameterName);
  builder.append(WordUtils.capitalize(field.getName()));
  final JMethod method = definedClass.method(JMod.PUBLIC, void.class, builder.toString());
  final JVar adderParam = method.param(fieldClass, parameterName);
  final JBlock body = method.body();
  final JVar decl = body.decl(getModel().ref(List.class), field.getName(), JExpr.invoke(getGetterName(field)));
  body.add(decl.invoke(listMethodName).arg(adderParam));
  return method;
}

代码示例来源：origin: apache/drill

JBlock sub = new JBlock(true, true);
  sub.assign(workspaceJVars[3].component(JExpr.lit(i)), workspaceJVars[2].component(JExpr.lit(i)));
  JBlock conditionalBlock = new JBlock(false, false);
  JConditional jc = conditionalBlock._if(inputVariables[i].getIsSet().ne(JExpr.lit(0)));
  jc._then().assign(JExpr.ref(workspaceJVars[3].component(JExpr.lit(i)), "valueHolder"), inputVariables[i].getHolder());
  jc._else().assign(JExpr.ref(workspaceJVars[3].component(JExpr.lit(i)), "valueHolder"), JExpr._null());
  sub.add(conditionalBlock);
 } else {
  sub.assign(workspaceJVars[3].component(JExpr.lit(i)), workspaceJVars[2].component(JExpr.lit(i)));
  sub.assign(JExpr.ref(workspaceJVars[3].component(JExpr.lit(i)), "valueHolder"), inputVariables[i].getHolder());
JVar retVal = sub.decl(m._ref(Object.class), "ret");
JTryBlock udfEvalTry = sub._try();
udfEvalTry.body().assign(retVal,
 workspaceJVars[1].invoke("evaluate").arg(workspaceJVars[3]));
JCatchBlock udfEvalCatch = udfEvalTry._catch(m.directClass(Exception.class.getCanonicalName()));
JVar exVar = udfEvalCatch.param("ex");
udfEvalCatch.body()
 ._throw(JExpr._new(m.directClass(RuntimeException.class.getCanonicalName()))
  .arg(JExpr.lit(String.format("GenericUDF.evaluate method failed"))).arg(exVar));
sub.add(ObjectInspectorHelper.getDrillObject(m, returnOI, workspaceJVars[0], workspaceJVars[4], retVal));
sub.assign(out.getHolder(), workspaceJVars[4]);
setup.directStatement(String.format("/** start %s for function %s **/ ",
 ClassGenerator.BlockType.EVAL.name(), genericUdfClazz.getName() + (!isGenericUDF ? "("+udfName+")" : "")));

代码示例来源：origin: joelittlejohn/jsonschema2pojo

public void addConstructorFromParcel(JDefinedClass jclass) {
  JMethod ctorFromParcel = jclass.constructor(JMod.PROTECTED);
  JVar in = ctorFromParcel.param(jclass.owner().directClass("android.os.Parcel"), "in");
  if (extendsParcelable(jclass)) {
    ctorFromParcel.body().directStatement("super(in);");
  }
  for (JFieldVar f : jclass.fields().values()) {
    if( (f.mods().getValue() & JMod.STATIC) == JMod.STATIC ) {
      continue;
    }
    if (f.type().erasure().name().equals("List")) {
      ctorFromParcel.body()
          .invoke(in, "readList")
          .arg(JExpr._this().ref(f))
          .arg(JExpr.direct(getListType(f.type()) + ".class.getClassLoader()"));
     } else {
      ctorFromParcel.body().assign(
          JExpr._this().ref(f),
          JExpr.cast(
              f.type(),
              in.invoke("readValue").arg(JExpr.direct(f.type().erasure().name() + ".class.getClassLoader()"))
          )
      );
    }
  }
}

代码示例来源：origin: e-biz/androidkickstartr

private void addListNavigationConfiguration(JBlock configureActionBarBody) {
  jClass._implements(ref.sNavigationListener());
  JBlock onNavigationItemSelectedBody = onNavigationItemSelectedMethod.body();
  if (appDetails.isViewPager()) {
    onNavigationItemSelectedBody.invoke(pagerField, "setCurrentItem").arg(itemPositionParam);
  onNavigationItemSelectedBody._return(JExpr.TRUE);
  JInvocation getSupportActionbar = JExpr.invoke("getSupportActionBar");
  JInvocation getContext = getSupportActionbar.invoke("getThemedContext");
  JVar contextVar = configureActionBarBody.decl(ref.context(), "context", getContext);
  JExpression rLayoutSherlockSpinner = JExpr.direct("android.R.layout.simple_list_item_1");
      arg(contextVar). //
      arg(rArrayLocations). //
      arg(rLayoutSherlockSpinner);
  JVar listVar = configureActionBarBody.decl(listType, "list", createFromResource);
  configureActionBarBody.invoke(getSupportActionbar, "setNavigationMode").arg(navigationModeList);
  configureActionBarBody.invoke(getSupportActionbar, "setListNavigationCallbacks").//
      arg(listVar).//
      arg(JExpr._this());

代码示例来源：origin: e-biz/androidkickstartr

jClass = jCodeModel._class(appDetails.getSampleFragmentPackage());
  jClass._extends(ref.ref(appDetails.getRoboSherlockFragmentPackage()));
} else if (appDetails.isRoboguice()) {
  jClass._extends(ref.roboFragment());
} else {
  jClass._extends(ref.fragment());
  JMethod onCreateViewMethod = jClass.method(JMod.NONE, jCodeModel.VOID, "afterViews");
  onCreateViewMethod.annotate(ref.afterViews());
  onCreateViewMethodBody = onCreateViewMethod.body();
  JMethod onCreateViewMethod = jClass.method(JMod.PUBLIC, ref.view(), "onCreateView");
  onCreateViewMethod.annotate(ref.override());
  JVar inflaterParam = onCreateViewMethod.param(ref.layoutInflater(), "inflater");
  JVar containerParam = onCreateViewMethod.param(ref.viewGroup(), "container");
  onCreateViewMethodBody = onCreateViewMethod.body();
  onCreateViewMethodBody._return(inflateView(inflaterParam, containerParam));
  onViewCreatedMethodBody.invoke(JExpr._super(), "onViewCreated").arg(viewParam).arg(savedInstanceStateParam);
  JVar contentViewVar = onCreateViewMethodBody.decl(ref.view(), "contentView", inflateInvoke);
  onCreateViewMethodBody._return(contentViewVar);

代码示例来源：origin: fusesource/fuse-extra

private void generateToString() {
  toString = cls().method(JMod.PUBLIC, cm.ref("java.lang.String"), "toString");
  toString.body()._return(ref("this").invoke("toString").arg(lit("")));
  JMethod toString2 = cls().method(JMod.PUBLIC, cm.ref("java.lang.String"), "toString");
  toString2.param(String.class, "indent");
  toString2.body()._if(_this().ref("value").eq(_null()))._then().block()._return(lit("null"));
  if ( type.getName().equals("array") ) {
    toString2.body()._return(cm.ref("java.util.Arrays").staticInvoke("toString").arg(_this().ref("value")));
  } else {
    toString2.body()._return(_this().ref("value").invoke("toString"));
  }
}

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