spring ToStringStyler 源码
spring ToStringStyler 代码
文件路径：/spring-core/src/main/java/org/springframework/core/style/ToStringStyler.java
/*
* Copyright 2002-2017 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.core.style;
import org.springframework.lang.Nullable;
/**
* A strategy interface for pretty-printing {@code toString()} methods.
* Encapsulates the print algorithms; some other object such as a builder
* should provide the workflow.
*
* @author Keith Donald
* @since 1.2.2
*/
public interface ToStringStyler {
/**
* Style a {@code toString()}'ed object before its fields are styled.
* @param buffer the buffer to print to
* @param obj the object to style
*/
void styleStart(StringBuilder buffer, Object obj);
/**
* Style a {@code toString()}'ed object after it's fields are styled.
* @param buffer the buffer to print to
* @param obj the object to style
*/
void styleEnd(StringBuilder buffer, Object obj);
/**
* Style a field value as a string.
* @param buffer the buffer to print to
* @param fieldName the name of the field
* @param value the field value
*/
void styleField(StringBuilder buffer, String fieldName, @Nullable Object value);
/**
* Style the given value.
* @param buffer the buffer to print to
* @param value the field value
*/
void styleValue(StringBuilder buffer, Object value);
/**
* Style the field separator.
* @param buffer the buffer to print to
*/
void styleFieldSeparator(StringBuilder buffer);
}
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