org.eclipse.jdt.internal.compiler.ast.ReturnStatement Java Examples

public MethodDeclaration generateBuilderMethod(String builderMethodName, String builderClassName, EclipseNode type, TypeParameter[] typeParams, ASTNode source) {
	int pS = source.sourceStart, pE = source.sourceEnd;
	long p = (long) pS << 32 | pE;
	
	MethodDeclaration out = new MethodDeclaration(
			((CompilationUnitDeclaration) type.top().get()).compilationResult);
	out.selector = builderMethodName.toCharArray();
	out.modifiers = ClassFileConstants.AccPublic | ClassFileConstants.AccStatic;
	out.bits |= ECLIPSE_DO_NOT_TOUCH_FLAG;
	out.returnType = namePlusTypeParamsToTypeReference(builderClassName.toCharArray(), typeParams, p);
	out.typeParameters = copyTypeParams(typeParams, source);
	AllocationExpression invoke = new AllocationExpression();
	invoke.type = namePlusTypeParamsToTypeReference(builderClassName.toCharArray(), typeParams, p);
	out.statements = new Statement[] {new ReturnStatement(invoke, pS, pE)};
	
	out.traverse(new SetGeneratedByVisitor(source), ((TypeDeclaration) type.get()).scope);
	return out;
}
 

public IfStatement generateCompareFloatOrDouble(Expression thisRef, Expression otherRef, char[] floatOrDouble, ASTNode source) {
	int pS = source.sourceStart, pE = source.sourceEnd;
	/* if (Float.compare(fieldName, other.fieldName) != 0) return false */
	MessageSend floatCompare = new MessageSend();
	floatCompare.sourceStart = pS; floatCompare.sourceEnd = pE;
	setGeneratedBy(floatCompare, source);
	floatCompare.receiver = generateQualifiedNameRef(source, TypeConstants.JAVA, TypeConstants.LANG, floatOrDouble);
	floatCompare.selector = "compare".toCharArray();
	floatCompare.arguments = new Expression[] {thisRef, otherRef};
	IntLiteral int0 = makeIntLiteral("0".toCharArray(), source);
	EqualExpression ifFloatCompareIsNot0 = new EqualExpression(floatCompare, int0, OperatorIds.NOT_EQUAL);
	ifFloatCompareIsNot0.sourceStart = pS; ifFloatCompareIsNot0.sourceEnd = pE;
	setGeneratedBy(ifFloatCompareIsNot0, source);
	FalseLiteral falseLiteral = new FalseLiteral(pS, pE);
	setGeneratedBy(falseLiteral, source);
	ReturnStatement returnFalse = new ReturnStatement(falseLiteral, pS, pE);
	setGeneratedBy(returnFalse, source);
	IfStatement ifStatement = new IfStatement(ifFloatCompareIsNot0, returnFalse, pS, pE);
	setGeneratedBy(ifStatement, source);
	return ifStatement;
}
 

private void addFactoryMethod(EclipseNode singletonClass, TypeDeclaration astNode, TypeReference typeReference, TypeDeclaration innerClass, FieldDeclaration field) {
    MethodDeclaration factoryMethod = new MethodDeclaration(astNode.compilationResult);
    factoryMethod.modifiers = AccStatic | ClassFileConstants.AccPublic;
    factoryMethod.returnType = typeReference;
    factoryMethod.sourceStart = astNode.sourceStart;
    factoryMethod.sourceEnd = astNode.sourceEnd;
    factoryMethod.selector = "getInstance".toCharArray();
    factoryMethod.bits = ECLIPSE_DO_NOT_TOUCH_FLAG;

    long pS = factoryMethod.sourceStart;
    long pE = factoryMethod.sourceEnd;
    long p = (long) pS << 32 | pE;

    FieldReference ref = new FieldReference(field.name, p);
    ref.receiver = new SingleNameReference(innerClass.name, p);

    ReturnStatement statement = new ReturnStatement(ref, astNode.sourceStart, astNode.sourceEnd);

    factoryMethod.statements = new Statement[]{statement};

    EclipseHandlerUtil.injectMethod(singletonClass, factoryMethod);
}
 

@Override public void generateMethods(SingularData data, EclipseNode builderType, boolean fluent, boolean chain) {
	TypeReference returnType = chain ? cloneSelfType(builderType) : TypeReference.baseTypeReference(TypeIds.T_void, 0);
	Statement returnStatement = chain ? new ReturnStatement(new ThisReference(0, 0), 0, 0) : null;
	generateSingularMethod(returnType, returnStatement, data, builderType, fluent);
	
	returnType = chain ? cloneSelfType(builderType) : TypeReference.baseTypeReference(TypeIds.T_void, 0);
	returnStatement = chain ? new ReturnStatement(new ThisReference(0, 0), 0, 0) : null;
	generatePluralMethod(returnType, returnStatement, data, builderType, fluent);
}
 

@Override public void generateMethods(SingularData data, EclipseNode builderType, boolean fluent, boolean chain) {
	if (useGuavaInstead(builderType)) {
		guavaListSetSingularizer.generateMethods(data, builderType, fluent, chain);
		return;
	}
	
	TypeReference returnType = chain ? cloneSelfType(builderType) : TypeReference.baseTypeReference(TypeIds.T_void, 0);
	Statement returnStatement = chain ? new ReturnStatement(new ThisReference(0, 0), 0, 0) : null;
	generateSingularMethod(returnType, returnStatement, data, builderType, fluent);
	
	returnType = chain ? cloneSelfType(builderType) : TypeReference.baseTypeReference(TypeIds.T_void, 0);
	returnStatement = chain ? new ReturnStatement(new ThisReference(0, 0), 0, 0) : null;
	generatePluralMethod(returnType, returnStatement, data, builderType, fluent);
}
 

@Override public void generateMethods(SingularData data, EclipseNode builderType, boolean fluent, boolean chain) {
	if (useGuavaInstead(builderType)) {
		guavaMapSingularizer.generateMethods(data, builderType, fluent, chain);
		return;
	}
	
	TypeReference returnType = chain ? cloneSelfType(builderType) : TypeReference.baseTypeReference(TypeIds.T_void, 0);
	Statement returnStatement = chain ? new ReturnStatement(new ThisReference(0, 0), 0, 0) : null;
	generateSingularMethod(returnType, returnStatement, data, builderType, fluent);
	
	returnType = chain ? cloneSelfType(builderType) : TypeReference.baseTypeReference(TypeIds.T_void, 0);
	returnStatement = chain ? new ReturnStatement(new ThisReference(0, 0), 0, 0) : null;
	generatePluralMethod(returnType, returnStatement, data, builderType, fluent);
}
 

public MethodDeclaration createStaticConstructor(AccessLevel level, String name, EclipseNode type, Collection<EclipseNode> fields, ASTNode source) {
	int pS = source.sourceStart, pE = source.sourceEnd;
	long p = (long)pS << 32 | pE;
	
	MethodDeclaration constructor = new MethodDeclaration(
			((CompilationUnitDeclaration) type.top().get()).compilationResult);
	
	constructor.modifiers = toEclipseModifier(level) | ClassFileConstants.AccStatic;
	TypeDeclaration typeDecl = (TypeDeclaration) type.get();
	constructor.returnType = EclipseHandlerUtil.namePlusTypeParamsToTypeReference(typeDecl.name, typeDecl.typeParameters, p);
	constructor.annotations = null;
	constructor.selector = name.toCharArray();
	constructor.thrownExceptions = null;
	constructor.typeParameters = copyTypeParams(((TypeDeclaration)type.get()).typeParameters, source);
	constructor.bits |= ECLIPSE_DO_NOT_TOUCH_FLAG;
	constructor.bodyStart = constructor.declarationSourceStart = constructor.sourceStart = source.sourceStart;
	constructor.bodyEnd = constructor.declarationSourceEnd = constructor.sourceEnd = source.sourceEnd;
	
	List<Argument> params = new ArrayList<Argument>();
	List<Expression> assigns = new ArrayList<Expression>();
	AllocationExpression statement = new AllocationExpression();
	statement.sourceStart = pS; statement.sourceEnd = pE;
	statement.type = copyType(constructor.returnType, source);
	
	for (EclipseNode fieldNode : fields) {
		FieldDeclaration field = (FieldDeclaration) fieldNode.get();
		long fieldPos = (((long)field.sourceStart) << 32) | field.sourceEnd;
		SingleNameReference nameRef = new SingleNameReference(field.name, fieldPos);
		assigns.add(nameRef);
		
		Argument parameter = new Argument(field.name, fieldPos, copyType(field.type, source), Modifier.FINAL);
		parameter.annotations = copyAnnotations(source, findAnnotations(field, NON_NULL_PATTERN), findAnnotations(field, NULLABLE_PATTERN));
		params.add(parameter);
	}
	
	statement.arguments = assigns.isEmpty() ? null : assigns.toArray(new Expression[assigns.size()]);
	constructor.arguments = params.isEmpty() ? null : params.toArray(new Argument[params.size()]);
	constructor.statements = new Statement[] { new ReturnStatement(statement, (int)(p >> 32), (int)p) };
	
	constructor.traverse(new SetGeneratedByVisitor(source), typeDecl.scope);
	return constructor;
}
 

public Statement[] createSimpleGetterBody(ASTNode source, EclipseNode fieldNode) {
	FieldDeclaration field = (FieldDeclaration) fieldNode.get();
	Expression fieldRef = createFieldAccessor(fieldNode, FieldAccess.ALWAYS_FIELD, source);
	Statement returnStatement = new ReturnStatement(fieldRef, field.sourceStart, field.sourceEnd);
	return new Statement[] {returnStatement};
}
 

static MethodDeclaration createSetter(TypeDeclaration parent, EclipseNode fieldNode, String name, boolean shouldReturnThis, int modifier, EclipseNode sourceNode, List<Annotation> onMethod, List<Annotation> onParam) {
	FieldDeclaration field = (FieldDeclaration) fieldNode.get();
	ASTNode source = sourceNode.get();
	int pS = source.sourceStart, pE = source.sourceEnd;
	long p = (long)pS << 32 | pE;
	MethodDeclaration method = new MethodDeclaration(parent.compilationResult);
	method.modifiers = modifier;
	if (shouldReturnThis) {
		method.returnType = cloneSelfType(fieldNode, source);
	}
	
	if (method.returnType == null) {
		method.returnType = TypeReference.baseTypeReference(TypeIds.T_void, 0);
		method.returnType.sourceStart = pS; method.returnType.sourceEnd = pE;
		shouldReturnThis = false;
	}
	Annotation[] deprecated = null;
	if (isFieldDeprecated(fieldNode)) {
		deprecated = new Annotation[] { generateDeprecatedAnnotation(source) };
	}
	method.annotations = copyAnnotations(source, onMethod.toArray(new Annotation[0]), deprecated);
	Argument param = new Argument(field.name, p, copyType(field.type, source), Modifier.FINAL);
	param.sourceStart = pS; param.sourceEnd = pE;
	method.arguments = new Argument[] { param };
	method.selector = name.toCharArray();
	method.binding = null;
	method.thrownExceptions = null;
	method.typeParameters = null;
	method.bits |= ECLIPSE_DO_NOT_TOUCH_FLAG;
	Expression fieldRef = createFieldAccessor(fieldNode, FieldAccess.ALWAYS_FIELD, source);
	NameReference fieldNameRef = new SingleNameReference(field.name, p);
	Assignment assignment = new Assignment(fieldRef, fieldNameRef, (int)p);
	assignment.sourceStart = pS; assignment.sourceEnd = assignment.statementEnd = pE;
	method.bodyStart = method.declarationSourceStart = method.sourceStart = source.sourceStart;
	method.bodyEnd = method.declarationSourceEnd = method.sourceEnd = source.sourceEnd;
	
	Annotation[] nonNulls = findAnnotations(field, NON_NULL_PATTERN);
	Annotation[] nullables = findAnnotations(field, NULLABLE_PATTERN);
	List<Statement> statements = new ArrayList<Statement>(5);
	if (nonNulls.length == 0) {
		statements.add(assignment);
	} else {
		Statement nullCheck = generateNullCheck(field, sourceNode);
		if (nullCheck != null) statements.add(nullCheck);
		statements.add(assignment);
	}
	
	if (shouldReturnThis) {
		ThisReference thisRef = new ThisReference(pS, pE);
		ReturnStatement returnThis = new ReturnStatement(thisRef, pS, pE);
		statements.add(returnThis);
	}
	method.statements = statements.toArray(new Statement[0]);
	param.annotations = copyAnnotations(source, nonNulls, nullables, onParam.toArray(new Annotation[0]));
	
	method.traverse(new SetGeneratedByVisitor(source), parent.scope);
	return method;
}
 

public MethodDeclaration createWither(TypeDeclaration parent, EclipseNode fieldNode, String name, int modifier, EclipseNode sourceNode, List<Annotation> onMethod, List<Annotation> onParam) {
	ASTNode source = sourceNode.get();
	if (name == null) return null;
	FieldDeclaration field = (FieldDeclaration) fieldNode.get();
	int pS = source.sourceStart, pE = source.sourceEnd;
	long p = (long)pS << 32 | pE;
	MethodDeclaration method = new MethodDeclaration(parent.compilationResult);
	method.modifiers = modifier;
	method.returnType = cloneSelfType(fieldNode, source);
	if (method.returnType == null) return null;
	
	Annotation[] deprecated = null;
	if (isFieldDeprecated(fieldNode)) {
		deprecated = new Annotation[] { generateDeprecatedAnnotation(source) };
	}
	method.annotations = copyAnnotations(source, onMethod.toArray(new Annotation[0]), deprecated);
	Argument param = new Argument(field.name, p, copyType(field.type, source), Modifier.FINAL);
	param.sourceStart = pS; param.sourceEnd = pE;
	method.arguments = new Argument[] { param };
	method.selector = name.toCharArray();
	method.binding = null;
	method.thrownExceptions = null;
	method.typeParameters = null;
	method.bits |= ECLIPSE_DO_NOT_TOUCH_FLAG;
	
	List<Expression> args = new ArrayList<Expression>();
	for (EclipseNode child : fieldNode.up().down()) {
		if (child.getKind() != Kind.FIELD) continue;
		FieldDeclaration childDecl = (FieldDeclaration) child.get();
		// Skip fields that start with $
		if (childDecl.name != null && childDecl.name.length > 0 && childDecl.name[0] == '$') continue;
		long fieldFlags = childDecl.modifiers;
		// Skip static fields.
		if ((fieldFlags & ClassFileConstants.AccStatic) != 0) continue;
		// Skip initialized final fields.
		if (((fieldFlags & ClassFileConstants.AccFinal) != 0) && childDecl.initialization != null) continue;
		if (child.get() == fieldNode.get()) {
			args.add(new SingleNameReference(field.name, p));
		} else {
			args.add(createFieldAccessor(child, FieldAccess.ALWAYS_FIELD, source));
		}
	}
	
	AllocationExpression constructorCall = new AllocationExpression();
	constructorCall.arguments = args.toArray(new Expression[0]);
	constructorCall.type = cloneSelfType(fieldNode, source);
	
	Expression identityCheck = new EqualExpression(
			createFieldAccessor(fieldNode, FieldAccess.ALWAYS_FIELD, source),
			new SingleNameReference(field.name, p),
			OperatorIds.EQUAL_EQUAL);
	ThisReference thisRef = new ThisReference(pS, pE);
	Expression conditional = new ConditionalExpression(identityCheck, thisRef, constructorCall);
	Statement returnStatement = new ReturnStatement(conditional, pS, pE);
	method.bodyStart = method.declarationSourceStart = method.sourceStart = source.sourceStart;
	method.bodyEnd = method.declarationSourceEnd = method.sourceEnd = source.sourceEnd;
	
	Annotation[] nonNulls = findAnnotations(field, NON_NULL_PATTERN);
	Annotation[] nullables = findAnnotations(field, NULLABLE_PATTERN);
	List<Statement> statements = new ArrayList<Statement>(5);
	if (nonNulls.length > 0) {
		Statement nullCheck = generateNullCheck(field, sourceNode);
		if (nullCheck != null) statements.add(nullCheck);
	}
	statements.add(returnStatement);
	
	method.statements = statements.toArray(new Statement[0]);
	
	param.annotations = copyAnnotations(source, nonNulls, nullables, onParam.toArray(new Annotation[0]));
	
	method.traverse(new SetGeneratedByVisitor(source), parent.scope);
	return method;
}
 

public MethodDeclaration createCanEqual(EclipseNode type, ASTNode source, List<Annotation> onParam) {
	/* public boolean canEqual(final java.lang.Object other) {
	 *     return other instanceof Outer.Inner.MyType;
	 * }
	 */
	int pS = source.sourceStart; int pE = source.sourceEnd;
	long p = (long)pS << 32 | pE;
	
	char[] otherName = "other".toCharArray();
	
	MethodDeclaration method = new MethodDeclaration(
			((CompilationUnitDeclaration) type.top().get()).compilationResult);
	setGeneratedBy(method, source);
	method.modifiers = toEclipseModifier(AccessLevel.PROTECTED);
	method.returnType = TypeReference.baseTypeReference(TypeIds.T_boolean, 0);
	method.returnType.sourceStart = pS; method.returnType.sourceEnd = pE;
	setGeneratedBy(method.returnType, source);
	method.selector = "canEqual".toCharArray();
	method.thrownExceptions = null;
	method.typeParameters = null;
	method.bits |= Eclipse.ECLIPSE_DO_NOT_TOUCH_FLAG;
	method.bodyStart = method.declarationSourceStart = method.sourceStart = source.sourceStart;
	method.bodyEnd = method.declarationSourceEnd = method.sourceEnd = source.sourceEnd;
	TypeReference objectRef = new QualifiedTypeReference(TypeConstants.JAVA_LANG_OBJECT, new long[] { p, p, p });
	setGeneratedBy(objectRef, source);
	method.arguments = new Argument[] {new Argument(otherName, 0, objectRef, Modifier.FINAL)};
	method.arguments[0].sourceStart = pS; method.arguments[0].sourceEnd = pE;
	if (!onParam.isEmpty()) method.arguments[0].annotations = onParam.toArray(new Annotation[0]);
	setGeneratedBy(method.arguments[0], source);
	
	SingleNameReference otherRef = new SingleNameReference(otherName, p);
	setGeneratedBy(otherRef, source);
	
	TypeReference typeReference = createTypeReference(type, p);
	setGeneratedBy(typeReference, source);
	
	InstanceOfExpression instanceOf = new InstanceOfExpression(otherRef, typeReference);
	instanceOf.sourceStart = pS; instanceOf.sourceEnd = pE;
	setGeneratedBy(instanceOf, source);
	
	ReturnStatement returnStatement = new ReturnStatement(instanceOf, pS, pE);
	setGeneratedBy(returnStatement, source);
	
	method.statements = new Statement[] {returnStatement};
	return method;
}
 

@Override public boolean visit(ReturnStatement node, BlockScope scope) {
	fixPositions(setGeneratedBy(node, source));
	return super.visit(node, scope);
}
 

private void buildMoreCompletionContext(Expression expression) {
	ASTNode parentNode = null;

	int kind = topKnownElementKind(SELECTION_OR_ASSIST_PARSER);
	if(kind != 0) {
		int info = topKnownElementInfo(SELECTION_OR_ASSIST_PARSER);
		nextElement : switch (kind) {
			case K_BETWEEN_CASE_AND_COLON :
				if(this.expressionPtr > 0) {
					SwitchStatement switchStatement = new SwitchStatement();
					switchStatement.expression = this.expressionStack[this.expressionPtr - 1];
					if(this.astLengthPtr > -1 && this.astPtr > -1) {
						int length = this.astLengthStack[this.astLengthPtr];
						int newAstPtr = this.astPtr - length;
						ASTNode firstNode = this.astStack[newAstPtr + 1];
						if(length != 0 && firstNode.sourceStart > switchStatement.expression.sourceEnd) {
							switchStatement.statements = new Statement[length + 1];
							System.arraycopy(
								this.astStack,
								newAstPtr + 1,
								switchStatement.statements,
								0,
								length);
						}
					}
					CaseStatement caseStatement = new CaseStatement(expression, expression.sourceStart, expression.sourceEnd);
					if(switchStatement.statements == null) {
						switchStatement.statements = new Statement[]{caseStatement};
					} else {
						switchStatement.statements[switchStatement.statements.length - 1] = caseStatement;
					}
					parentNode = switchStatement;
					this.assistNodeParent = parentNode;
				}
				break nextElement;
			case K_INSIDE_RETURN_STATEMENT :
				if(info == this.bracketDepth) {
					ReturnStatement returnStatement = new ReturnStatement(expression, expression.sourceStart, expression.sourceEnd);
					parentNode = returnStatement;
					this.assistNodeParent = parentNode;
				}
				break nextElement;
			case K_CAST_STATEMENT :
				Expression castType;
				if(this.expressionPtr > 0
					&& ((castType = this.expressionStack[this.expressionPtr-1]) instanceof TypeReference)) {
					CastExpression cast = new CastExpression(expression, (TypeReference) castType);
					cast.sourceStart = castType.sourceStart;
					cast.sourceEnd= expression.sourceEnd;
					parentNode = cast;
					this.assistNodeParent = parentNode;
				}
				break nextElement;
		}
	}
	// Do not add assist node/parent into the recovery system if we are inside a lambda. The lambda will be fully recovered including the containing statement and added.
	if (lastIndexOfElement(K_LAMBDA_EXPRESSION_DELIMITER) < 0) {
		if(parentNode != null) {
			this.currentElement = this.currentElement.add((Statement)parentNode, 0);
		} else {
			this.currentElement = this.currentElement.add((Statement)wrapWithExplicitConstructorCallIfNeeded(expression), 0);
			if(this.lastCheckPoint < expression.sourceEnd) {
				this.lastCheckPoint = expression.sourceEnd + 1;
			}
		}
	}
}