Source code
package io.netty.buffer;
import java.nio.ByteBuffer;
@Deprecated
public abstract class AbstractDerivedByteBuf extends AbstractByteBuf {
protected AbstractDerivedByteBuf(int maxCapacity) {
super(maxCapacity);
}
@Override
final boolean isAccessible() {
return isAccessible0();
}
boolean isAccessible0() {
return unwrap().isAccessible();
}
@Override
public final int refCnt() {
return refCnt0();
}
int refCnt0() {
return unwrap().refCnt();
}
@Override
public final ByteBuf retain() {
return retain0();
}
ByteBuf retain0() {
unwrap().retain();
return this;
}
@Override
public final ByteBuf retain(int increment) {
return retain0(increment);
}
ByteBuf retain0(int increment) {
unwrap().retain(increment);
return this;
}
@Override
public final ByteBuf touch() {
return touch0();
}
ByteBuf touch0() {
unwrap().touch();
return this;
}
@Override
public final ByteBuf touch(Object hint) {
return touch0(hint);
}
ByteBuf touch0(Object hint) {
unwrap().touch(hint);
return this;
}
@Override
public final boolean release() {
return release0();
}
boolean release0() {
return unwrap().release();
}
@Override
public final boolean release(int decrement) {
return release0(decrement);
}
boolean release0(int decrement) {
return unwrap().release(decrement);
}
@Override
public boolean isReadOnly() {
return unwrap().isReadOnly();
}
@Override
public ByteBuffer internalNioBuffer(int index, int length) {
return nioBuffer(index, length);
}
@Override
public ByteBuffer nioBuffer(int index, int length) {
return unwrap().nioBuffer(index, length);
}
@Override
public boolean isContiguous() {
return unwrap().isContiguous();
}
}
Run 1
This code demonstrates excellent readability. The class has a clear, single responsibility: providing deprecated derived buffer implementations while delegating to an underlying buffer via the template method pattern. Structure is highly logical, with methods grouped by concern (accessibility, reference counting, retain/touch/release, and buffer properties). Nesting is completely flat — there are no conditional blocks or nested logic. Each method has a clear intent, and the naming convention (e.g., retain0, release0) consistently indicates internal delegation methods. The code is concise but not terse, with each method performing exactly one action per line. Reading flow is natural, following a predictable pattern from public API to protected/internal implementation. The consistent delegation pattern reduces cognitive load significantly.
Run 2
The code is generally readable and well-structured. It follows a consistent pattern of delegating to an unwrap() method, which makes the intent clear. Methods are short and each performs a single action. Nesting is minimal. The use of final for overridden methods and the separation of public final methods from protected *0 helper methods is a clean design. However, readability is slightly reduced by a few factors: there are several unnecessary blank lines at the top after the import, some methods like internalNioBuffer simply call nioBuffer which adds a layer of indirection without obvious benefit, and the overall class is long due to repetitive delegation patterns. The pattern is clear but somewhat verbose, could be more concise with a different approach.
Run 3
The code is generally readable with a clear, consistent structure. Each public method delegates to a corresponding package-private '0' method, which then calls the underlying unwrapped buffer. This pattern is logical, though somewhat repetitive. Nesting is minimal, and each line performs a single action. However, the intent of the '0' methods is not immediately obvious without context — their purpose (avoiding polymorphism in final methods?) is ambiguous. The reading flow is natural, but the verbosity of the delegation pattern increases code length unnecessarily for simple pass-throughs. Overall, the structure is maintainable and predictable, but could be more concise or better documented to clarify the intentional separation between public and internal methods.
Run 1
Code Structure: Methods are logically grouped, with consistent override-and-delegate pairs. Nesting: Flat, short methods avoid nested control flow entirely. Clarity of intent: Delegation to the underlying buffer is clear, though the purpose of the intermediate methods with a '0' suffix is not explained. Code length: Individual methods are concise, but repeated forwarding layers add boilerplate and increase overall length. Action granularity: Each statement performs a single action, making reference-count changes and returns easy to distinguish. Reading flow: Consistent formatting and predictable method ordering support smooth reading; excessive blank lines before the class and frequent transitions between public wrappers and internal hooks slightly interrupt it.
Run 2
Code Structure: Methods are logically grouped, with consistent delegation patterns and adjacent wrapper/helper pairs. Nesting: Entirely flat, with no conditionals or loops to complicate comprehension. Clarity of intent: Delegation to the underlying buffer is clear, but the purpose of the final methods and overridable helpers with '0' suffixes is not explained. Code length: Individual methods are concise, though repeated forwarding layers increase overall length. Action granularity: Each statement performs one action, and mutations are clearly separated from returns. Reading flow: Consistent formatting and predictable method patterns make scanning easy; excessive blank lines near the header and repetitive indirection slightly disrupt the flow.
Run 3
Code Structure: Methods are logically organized, with related overloads and delegation helpers adjacent. Nesting: The code is flat, with no nested control flow. Clarity of intent: Delegation to the underlying buffer is clear, but helper names ending in '0' and the unexplained final-method/helper pattern obscure the design rationale. Code length: Individual methods are concise, though repeated forwarding methods add boilerplate and excessive blank lines add visual noise. Action granularity: Each statement performs one action, and mutation followed by returning this is clearly separated. Reading flow: Consistent formatting and predictable method patterns make the class easy to scan, although repeated indirection slightly interrupts comprehension.