com.github.javaparser.ast.body.Parameter Java Examples

private void getParameterNames(MethodDeclaration methodDeclaration, boolean isInterface) {
  NodeList<Modifier> modifiers = methodDeclaration.getModifiers();
  if (isInterface || modifiers.contains(Modifier.publicModifier())) {
    String methodName = methodDeclaration.getName().getIdentifier();
    List<Parameter> parameters = methodDeclaration.getParameters();
    names.className = this.className;
    List<List<ParameterName>> parameterNames =
        names.names.computeIfAbsent(methodName, k -> new ArrayList<>(4));

    final List<ParameterName> temp = new ArrayList<>(8);
    for (final Parameter parameter : parameters) {
      ParameterName parameterName = new ParameterName();
      String type = parameter.getType().toString();
      String name = parameter.getName().getIdentifier();
      if (name.contains("[]")) {
        type = type + "[]";
        name = COMPILE.matcher(name).replaceAll(Matcher.quoteReplacement(""));
      }
      parameterName.type = type;
      parameterName.name = name;
      temp.add(parameterName);
    }
    parameterNames.add(temp);
  }
}
 

private void setConstructorOrMethodCommon(CallableDeclaration<? extends CallableDeclaration<?>> n, SimpleGroovyExecutableMemberDoc methOrCons) {
    n.getJavadocComment().ifPresent(javadocComment ->
            methOrCons.setRawCommentText(javadocComment.getContent()));
    NodeList<Modifier> mods = n.getModifiers();
    if (currentClassDoc.isInterface()) {
        mods.add(Modifier.publicModifier());
    }
    setModifiers(mods, methOrCons);
    processAnnotations(methOrCons, n);
    for (Parameter param : n.getParameters()) {
        SimpleGroovyParameter p = new SimpleGroovyParameter(param.getNameAsString());
        processAnnotations(p, param);
        p.setType(makeType(param.getType()));
        methOrCons.add(p);
    }
}
 

/**
 * @param md
 *            JavaParser method declaration.
 * @return Internal descriptor from declaration, or {@code null} if any parsing
 *         failures occured.
 */
private static String getMethodDesc(MethodDeclaration md) {
	StringBuilder sbDesc = new StringBuilder("(");
	// Append the method parameters for the descriptor
	NodeList<Parameter> params = md.getParameters();
	for (Parameter param : params) {
		Type pType = param.getType();
		String pDesc = getDescriptor(pType);
		if (pDesc == null)
			return null;
		sbDesc.append(pDesc);
	}
	// Append the return type for the descriptor
	Type typeRet = md.getType();
	String retDesc = getDescriptor(typeRet);
	if (retDesc == null)
		return null;
	sbDesc.append(")");
	sbDesc.append(retDesc);
	return sbDesc.toString();
}
 

private MethodCallExpr handleRuleFlowGroup(RuleSetNode.RuleType ruleType) {
    // build supplier for rule runtime
    BlockStmt actionBody = new BlockStmt();
    LambdaExpr lambda = new LambdaExpr(new Parameter(new UnknownType(), "()"), actionBody);

    MethodCallExpr ruleRuntimeBuilder = new MethodCallExpr(
            new MethodCallExpr(new NameExpr("app"), "ruleUnits"), "ruleRuntimeBuilder");
    MethodCallExpr ruleRuntimeSupplier = new MethodCallExpr(
            ruleRuntimeBuilder, "newKieSession",
            NodeList.nodeList(new StringLiteralExpr("defaultStatelessKieSession"), new NameExpr("app.config().rule()")));
    actionBody.addStatement(new ReturnStmt(ruleRuntimeSupplier));

    return new MethodCallExpr("ruleFlowGroup")
            .addArgument(new StringLiteralExpr(ruleType.getName()))
            .addArgument(lambda);

}
 

private MethodCallExpr handleDecision(RuleSetNode.RuleType.Decision ruleType) {

        StringLiteralExpr namespace = new StringLiteralExpr(ruleType.getNamespace());
        StringLiteralExpr model = new StringLiteralExpr(ruleType.getModel());
        Expression decision = ruleType.getDecision() == null ?
                new NullLiteralExpr() : new StringLiteralExpr(ruleType.getDecision());

        MethodCallExpr decisionModels =
                new MethodCallExpr(new NameExpr("app"), "decisionModels");
        MethodCallExpr decisionModel =
                new MethodCallExpr(decisionModels, "getDecisionModel")
                        .addArgument(namespace)
                        .addArgument(model);

        BlockStmt actionBody = new BlockStmt();
        LambdaExpr lambda = new LambdaExpr(new Parameter(new UnknownType(), "()"), actionBody);
        actionBody.addStatement(new ReturnStmt(decisionModel));

        return new MethodCallExpr(METHOD_DECISION)
                .addArgument(namespace)
                .addArgument(model)
                .addArgument(decision)
                .addArgument(lambda);
    }
 

public static LambdaExpr buildLambdaExpr(Node node, ProcessMetaData metadata) {
    Map<String, Object> nodeMetaData = node.getMetaData();
    TriggerMetaData triggerMetaData = new TriggerMetaData(
            (String) nodeMetaData.get(TRIGGER_REF),
            (String) nodeMetaData.get(TRIGGER_TYPE),
            (String) nodeMetaData.get(MESSAGE_TYPE),
            (String) nodeMetaData.get(MAPPING_VARIABLE),
            String.valueOf(node.getId()))
            .validate();
    metadata.getTriggers().add(triggerMetaData);

    // and add trigger action
    BlockStmt actionBody = new BlockStmt();
    CastExpr variable = new CastExpr(
            new ClassOrInterfaceType(null, triggerMetaData.getDataType()),
            new MethodCallExpr(new NameExpr(KCONTEXT_VAR), "getVariable")
                    .addArgument(new StringLiteralExpr(triggerMetaData.getModelRef())));
    MethodCallExpr producerMethodCall = new MethodCallExpr(new NameExpr("producer_" + node.getId()), "produce").addArgument(new MethodCallExpr(new NameExpr("kcontext"), "getProcessInstance")).addArgument(variable);
    actionBody.addStatement(producerMethodCall);
    return new LambdaExpr(
            new Parameter(new UnknownType(), KCONTEXT_VAR), // (kcontext) ->
            actionBody
    );
}
 

private MethodDeclaration generateMergeEventListenerConfigMethod() {
    BlockStmt body = new BlockStmt().addStatement(new ReturnStmt(newObject(CachedDecisionEventListenerConfig.class,
            callMerge(
                    VAR_DECISION_EVENT_LISTENER_CONFIG,
                    DecisionEventListenerConfig.class, "listeners",
                    VAR_DMN_RUNTIME_EVENT_LISTENERS
            )
    )));

    return method(Modifier.Keyword.PRIVATE, DecisionEventListenerConfig.class, METHOD_MERGE_DECISION_EVENT_LISTENER_CONFIG,
            nodeList(
                    new Parameter().setType(genericType(Collection.class, DecisionEventListenerConfig.class)).setName(VAR_DECISION_EVENT_LISTENER_CONFIG),
                    new Parameter().setType(genericType(Collection.class, DMNRuntimeEventListener.class)).setName(VAR_DMN_RUNTIME_EVENT_LISTENERS)
            ),
            body);
}
 

private MethodDeclaration generateMergeEventListenerConfigMethod() {
    BlockStmt body = new BlockStmt().addStatement(new ReturnStmt(newObject(CachedRuleEventListenerConfig.class,
            callMerge(
                    VAR_RULE_EVENT_LISTENER_CONFIGS,
                    RuleEventListenerConfig.class, "agendaListeners",
                    VAR_AGENDA_EVENT_LISTENERS
            ),
            callMerge(
                    VAR_RULE_EVENT_LISTENER_CONFIGS,
                    RuleEventListenerConfig.class, "ruleRuntimeListeners",
                    VAR_RULE_RUNTIME_EVENT_LISTENERS
            )
    )));

    return method(Modifier.Keyword.PRIVATE, RuleEventListenerConfig.class, METHOD_MERGE_RULE_EVENT_LISTENER_CONFIG,
            NodeList.nodeList(
                    new Parameter().setType(genericType(Collection.class, RuleEventListenerConfig.class)).setName(VAR_RULE_EVENT_LISTENER_CONFIGS),
                    new Parameter().setType(genericType(Collection.class, AgendaEventListener.class)).setName(VAR_AGENDA_EVENT_LISTENERS),
                    new Parameter().setType(genericType(Collection.class, RuleRuntimeEventListener.class)).setName(VAR_RULE_RUNTIME_EVENT_LISTENERS)
            ),
            body);
}
 

private BlockStmt wrapBodyAddingExceptionLogging(BlockStmt body, String nameURL) {
    TryStmt ts = new TryStmt();
    ts.setTryBlock(body);
    CatchClause cc = new CatchClause();
    String exceptionName = "e";
    cc.setParameter(new Parameter().setName(exceptionName).setType(Exception.class));
    BlockStmt cb = new BlockStmt();
    cb.addStatement(parseStatement(
            String.format(
                    "SystemMetricsCollector.registerException(\"%s\", %s.getStackTrace()[0].toString());",
                    nameURL,
                    exceptionName)
    ));
    cb.addStatement(new ThrowStmt(new NameExpr(exceptionName)));
    cc.setBody(cb);
    ts.setCatchClauses(new NodeList<>(cc));
    return new BlockStmt(new NodeList<>(ts));
}
 

private MethodDeclaration generateMergeEventListenerConfigMethod() {
    BlockStmt body = new BlockStmt().addStatement(new ReturnStmt(newObject(CachedProcessEventListenerConfig.class,
            callMerge(
                    VAR_PROCESS_EVENT_LISTENER_CONFIGS,
                    ProcessEventListenerConfig.class, "listeners",
                    VAR_PROCESS_EVENT_LISTENERS
            )
    )));

    return method(Modifier.Keyword.PRIVATE, ProcessEventListenerConfig.class, METHOD_MERGE_PROCESS_EVENT_LISTENER_CONFIG,
            NodeList.nodeList(
                    new Parameter().setType(genericType(Collection.class, ProcessEventListenerConfig.class)).setName(VAR_PROCESS_EVENT_LISTENER_CONFIGS),
                    new Parameter().setType(genericType(Collection.class, ProcessEventListener.class)).setName(VAR_PROCESS_EVENT_LISTENERS)
            ),
            body);
}
 

/**
 * Asserts that all method calls in the body of methodWithTargetMethodCalls have
 * the same argument size as the refactoredMethod has arguments
 * 
 * @param methodWithTargetMethodCalls
 * @param refactoredMethod
 */
private void assertAllMethodCallsArgumentSizeEqualToRefactoredMethodParameterCount(
		MethodDeclaration methodWithTargetMethodCalls, MethodDeclaration refactoredMethod) {
	for (MethodCallExpr methodCall : methodWithTargetMethodCalls.getBody().get().findAll(MethodCallExpr.class)) {
		if (methodCall.getNameAsString().equals(refactoredMethod.getNameAsString())) {
			NodeList<Expression> callerMethodArguments = methodCall.getArguments();
			NodeList<Parameter> refactoredMethodParameters = refactoredMethod.getParameters();

			assertThat(callerMethodArguments).hasSameSizeAs(refactoredMethodParameters);
		}
	}
}
 

/**
 * @param methodDeclaration
 * @param parameterName
 * @return index of the parameter with the given name, or null if not found
 */
private Integer getMethodParameterIndex(MethodDeclaration methodDeclaration, String parameterName) {
	NodeList<Parameter> parameters = methodDeclaration.getParameters();
	for (int i = 0; i < parameters.size(); i++) {
		if (parameters.get(i).getName().asString().equals(parameterName)) {
			return i;
		}
	}
	return null;
}
 

public static MethodDeclaration method(Modifier.Keyword modifier, Class<?> type, String name, NodeList<Parameter> parameters, BlockStmt body) {
    return new MethodDeclaration()
            .setModifiers(modifier)
            .setType(type == null ? "void" : type.getCanonicalName())
            .setName(name)
            .setParameters(parameters)
            .setBody(body);
}
 

public void index(ConstructorDeclaration constructorDeclaration, int typeId) {
    List<Parameter> parameters = constructorDeclaration.getParameters();
    String name = constructorDeclaration.getNameAsString();
    int methodId = methodDao.save(new Method(name,
            constructorDeclaration.isPublic(), constructorDeclaration.isStatic(), constructorDeclaration.isFinal(), constructorDeclaration.isAbstract(), true, typeId));
    for (Parameter parameter : parameters) {
        parameterIndexer.index(parameter, methodId);
    }
}
 

public void index(MethodDeclaration methodDeclaration, int typeId) {
    List<Parameter> parameters = methodDeclaration.getParameters();
    String name = methodDeclaration.getNameAsString();
    int methodId = methodDao.save(new Method(name,
            methodDeclaration.isPublic(), methodDeclaration.isStatic(), methodDeclaration.isFinal(), methodDeclaration.isAbstract(), false, typeId));
    for (Parameter parameter : parameters) {
        parameterIndexer.index(parameter, methodId);
    }
}
 

/**
 * Removes the parameter with the given name from the given method declaration
 * 
 * @param methodDeclaration
 * @param parameterName
 */
private void removeMethodParameter(MethodDeclaration methodDeclaration, String parameterName) {
	Optional<Parameter> parameterToBeRemoved = methodDeclaration.getParameterByName(parameterName);
	if (parameterToBeRemoved.isPresent()) {
		parameterToBeRemoved.get().remove();
	}
}
 

private MemberParameterTag createMethodParameterTag(JavadocBlockTag tag, MethodDeclaration method) {
    Stream<AnnotationExpr> annotations = method.getParameterByName(tag.getName().orElse(null))
            .map(Parameter::getAnnotations)
            .map(NodeList::stream)
            .orElseGet(Stream::empty);

    return createMemberParamTag(tag.getContent(), annotations);
}
 

@Override
public Parameter doMerge(Parameter first, Parameter second) {

    Parameter parameter = new Parameter();

    parameter.setType(first.getType());
    parameter.setId(first.getId());
    parameter.setVarArgs(first.isVarArgs());
    parameter.setModifiers(mergeModifiers(first.getModifiers(), second.getModifiers()));
    parameter.setAnnotations(mergeCollections(first.getAnnotations(), second.getAnnotations()));

    return parameter;
}
 

@Before
public void setup(){
  CompilationUnit cu = new CompilationUnit();
  // set the package
  cu.setPackage(new PackageDeclaration(ASTHelper.createNameExpr("java.parser.test")));

  // create the type declaration
  ClassOrInterfaceDeclaration type = new ClassOrInterfaceDeclaration(ModifierSet.PUBLIC, false, "GeneratedClass");
  ASTHelper.addTypeDeclaration(cu, type);

  // create a method
  MethodDeclaration method = new MethodDeclaration(ModifierSet.PUBLIC, ASTHelper.VOID_TYPE, "main");
  method.setModifiers(ModifierSet.addModifier(method.getModifiers(), ModifierSet.STATIC));
  ASTHelper.addMember(type, method);

  // add a parameter to the method
  Parameter param = ASTHelper.createParameter(ASTHelper.createReferenceType("String", 0), "args");
  param.setVarArgs(true);
  ASTHelper.addParameter(method, param);

  // add a body to the method
  BlockStmt block = new BlockStmt();
  method.setBody(block);

  // add a statement do the method body
  NameExpr clazz = new NameExpr("System");
  FieldAccessExpr field = new FieldAccessExpr(clazz, "out");
  MethodCallExpr call = new MethodCallExpr(field, "println");
  ASTHelper.addArgument(call, new StringLiteralExpr("Hello World!"));
  ASTHelper.addStmt(block, call);

  unit = cu;
}
 

private void syncConstructorSnippet(ConstructorDeclaration constructor, Map<String, ImportDeclaration> imports) {
    String signature
            = constructor.getParameters()
                    .stream()
                    .map(Parameter::getTypeAsString)
                    .collect(joining(", "));
    if (!javaClass.getConstructors()
            .stream()
            .filter(Constructor::isEnable)
            .filter(cot -> cot.getSignature().equals(signature))
            .findAny()
            .isPresent()) {
        syncClassSnippet(AFTER_FIELD, constructor.toString(), imports);
    }
}
 

private Range getParamsRange() {
    List<Parameter> parameters = registry.get(oldStepValue.getStepText()).getParameters();
    if (parameters.isEmpty()) {
        int line = registry.get(oldStepValue.getStepText()).getSpan().begin.line + 1;
        int column = registry.get(oldStepValue.getStepText()).getName().length();
        return new Range(new Position(line, column), new Position(line, column));
    }
    Range firstParam = parameters.get(0).getRange().get();
    Range lastParam = parameters.get(parameters.size() - 1).getRange().get();
    return new Range(new Position(firstParam.begin.line, firstParam.begin.column - 1), new Position(lastParam.end.line, lastParam.end.column));
}
 

private JavaRefactoringElement addJavaDiffElements(RefactoringMethodVisitor methodVisitor, JavaRefactoringElement javaElement) {
    List<Parameter> newParameters = methodVisitor.getNewParameters();
    Range stepLineSpan = methodVisitor.getStepLineSpan();
    javaElement.addDiffs(new Diff("\"" + parameterizedStepValue + "\"", getStepRange(stepLineSpan)));
    javaElement.addDiffs(new Diff(updatedParameters(newParameters), getParamsRange()));
    return javaElement;
}
 

@Override
public void visit(ClassOrInterfaceDeclaration node, Void arg) {
    super.visit(node, arg);

    replaceParentClassesForAtomics(node);

    node.setName(translateQueueName(node.getNameAsString()));

    if (isCommentPresent(node, GEN_DIRECTIVE_CLASS_CONTAINS_ORDERED_FIELD_ACCESSORS)) {
        node.setComment(null);
        removeStaticFieldsAndInitialisers(node);
        patchAtomicFieldUpdaterAccessorMethods(node);
    }

    for (MethodDeclaration method : node.getMethods()) {
        if (isCommentPresent(method, GEN_DIRECTIVE_METHOD_IGNORE)) {
            method.remove();
        }
    }

    if (!node.getMethodsByName("failFastOffer").isEmpty()) {
        MethodDeclaration deprecatedMethodRedirect = node.addMethod("weakOffer", Keyword.PUBLIC);
        patchMethodAsDeprecatedRedirector(deprecatedMethodRedirect, "failFastOffer", PrimitiveType.intType(),
                new Parameter(classType("E"), "e"));
    }

    node.setJavadocComment(formatMultilineJavadoc(0,
            "NOTE: This class was automatically generated by "
                    + JavaParsingAtomicArrayQueueGenerator.class.getName(),
            "which can found in the jctools-build module. The original source file is " + sourceFileName + ".")
            + node.getJavadocComment().orElse(new JavadocComment("")).getContent());
}
 

/***************
 * Constructors
 *   - modify the 2 arg constructor - changing the args and the body
 * @param n - the constructor node
 * @param ignored -
 */
@Override
public void visit(ConstructorDeclaration n, Object ignored) {
  super.visit(n, ignored);  // processes the params 
  if (!isConvert2v3) {  // for enums, annotations
    return;
  }
  List<Parameter> ps = n.getParameters();
  
  if (ps.size() == 2 && 
      getParmTypeName(ps, 0).equals("int") &&
      getParmTypeName(ps, 1).equals("TOP_Type")) {
      
    /** public Foo(TypeImpl type, CASImpl casImpl) {
     *   super(type, casImpl);
     *   readObject();
     */
    setParameter(ps, 0, "TypeImpl", "type");
    setParameter(ps, 1, "CASImpl", "casImpl");
    
    // Body: change the 1st statement (must be super)
    NodeList<Statement> stmts = n.getBody().getStatements();
    if (!(stmts.get(0) instanceof ExplicitConstructorInvocationStmt)) {
      recordBadConstructor("missing super call");
      return;
    }
    NodeList<Expression> args = ((ExplicitConstructorInvocationStmt)(stmts.get(0))).getArguments();
    args.set(0, new NameExpr("type"));
    args.set(1,  new NameExpr("casImpl"));
   
    // leave the rest unchanged.
  }      
}
 

/**
 * Heuristic:
 *   JCas classes have 0, 1, and 2 arg constructors with particular arg types
 *   0 -
 *   1 - JCas
 *   2 - int, TOP_Type  (v2) or TypeImpl, CASImpl (v3)
 *   
 * Additional 1 and 2 arg constructors are permitted.
 * 
 * Sets fields hasV2Constructors, hasV3Constructors
 * @param members
 */
private void setHasJCasConstructors(NodeList<BodyDeclaration<?>> members) {
  boolean has0ArgConstructor = false;
  boolean has1ArgJCasConstructor = false;
  boolean has2ArgJCasConstructorV2 = false;
  boolean has2ArgJCasConstructorV3 = false;
  
  for (BodyDeclaration<?> bd : members) {
    if (bd instanceof ConstructorDeclaration) {
      List<Parameter> ps = ((ConstructorDeclaration)bd).getParameters();
      if (ps.size() == 0) has0ArgConstructor = true;
      if (ps.size() == 1 && getParmTypeName(ps, 0).equals("JCas")) {
        has1ArgJCasConstructor = true;
      }
      if (ps.size() == 2) {
        if (getParmTypeName(ps, 0).equals("int") &&
            getParmTypeName(ps, 1).equals("TOP_Type")) {
          has2ArgJCasConstructorV2 = true;
        } else if (getParmTypeName(ps, 0).equals("TypeImpl") &&
                   getParmTypeName(ps, 1).equals("CASImpl")) {
          has2ArgJCasConstructorV3 = true;
        }
      } // end of 2 arg constructor
    } // end of is-constructor
  } // end of for loop
  
  hasV2Constructors = has0ArgConstructor && has1ArgJCasConstructor && has2ArgJCasConstructorV2;
  hasV3Constructors = has0ArgConstructor && has1ArgJCasConstructor && has2ArgJCasConstructorV3;
}
 

private void enableValidation(ClassOrInterfaceDeclaration template) {
    Optional.ofNullable(context)
            .map(GeneratorContext::getBuildContext)
            .filter(KogitoBuildContext::isValidationSupported)
            .ifPresent(c -> template.findAll(Parameter.class)
                    .stream()
                    .filter(param -> param.getTypeAsString().equals(dataClazzName + "Input"))
                    .forEach(this::insertValidationAnnotations));
}
 

public static boolean isRequestParam(Parameter parameter) {
    if (!parameter.isAnnotationPresent(ANNOTATION_PATH_VARIABLE) &&
            !parameter.isAnnotationPresent(ANNOTATION_REQUEST_BODY) &&
            !parameter.isAnnotationPresent(ANNOTATION_REQUEST_HEADER) &&
            !parameter.isAnnotationPresent(ANNOTATION_COOKIE_VALUE) &&
            !parameter.isAnnotationPresent(ANNOTATION_REQUEST_PART) &&
            !parameter.isAnnotationPresent(ANNOTATION_MULTIPART_FILE) &&
            !parameter.isAnnotationPresent(ANNOTATION_REQUEST_ATTRIBUTE)) {
        return true;
    }
    return false;
}
 

public static Parameter getRequestBody(NodeList<Parameter> parameters){
    for (Parameter parameter : parameters) {
        if (isRequestBody(parameter)) {
            return parameter;
        }
    }
    return null;
}
 

public static boolean hasRequestBody(NodeList<Parameter> parameters) {
    for (Parameter parameter : parameters) {
        if (isRequestBody(parameter)) {
            return true;
        }
    }
    return false;
}
 

/**
 * Write the method parameters and it's doc to target api doc
 *
 * @param doc     target doc
 * @param comment parameters and method doc
 **/
private void fillParamDoc(APIDoc doc, JavadocComment comment, StringBuilder methodDesBuilder) {
    Javadoc javadoc = comment.parse();
    toString(javadoc.getDescription(), methodDesBuilder);
    doc.setDesc(methodDesBuilder.toString());
    methodDesBuilder.setLength(0);
    List<JavadocBlockTag> tags = javadoc.getBlockTags();
    if (comment.getCommentedNode().isPresent()) {
        Node node = comment.getCommentedNode().get();
        if (node instanceof MethodDeclaration) {
            MethodDeclaration method = (MethodDeclaration) node;
            for (Parameter p : method.getParameters()) {
                String type = p.getType().asString();
                String name = p.getName().asString();
                List<Param> params = doc.getParams();
                Param param = new Param();
                param.setName(name);
                param.setType(type);
                for (JavadocBlockTag t : tags) {
                    if (t.getName().isPresent()) {
                        if (name.endsWith(t.getName().get())) {
                            toString(t.getContent(), methodDesBuilder);
                            param.setComment(methodDesBuilder.toString());
                            methodDesBuilder.setLength(0);
                        }
                    }
                }
                if (params == null) {
                    params = new ArrayList<>();
                    doc.setParams(params);
                }
                params.add(param);
            }
        }
    }
}