java/15 : java.base/jdk/internal/org/objectweb/asm/tree/AbstractInsnNode.java

AbstractInsnNode
https://openjdk.java.net/
GPLv2 + Classpath Exception
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/*
 * This file is available under and governed by the GNU General Public
 * License version 2 only, as published by the Free Software Foundation.
 * However, the following notice accompanied the original version of this
 * file:
 *
 * ASM: a very small and fast Java bytecode manipulation framework
 * Copyright (c) 2000-2011 INRIA, France Telecom
 * All rights reserved.
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 * modification, are permitted provided that the following conditions
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 *    this software without specific prior written permission.
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package jdk.internal.org.objectweb.asm.tree;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import jdk.internal.org.objectweb.asm.MethodVisitor;

A node that represents a bytecode instruction. An instruction can appear at most once in at most one InsnList at a time.
Author: Eric Bruneton/**
 * A node that represents a bytecode instruction. <i>An instruction can appear at most once in at
 * most one {@link InsnList} at a time</i>.
 *
 * @author Eric Bruneton
 */
public abstract class AbstractInsnNode {

    The type of InsnNode instructions. /** The type of {@link InsnNode} instructions. */
    public static final int INSN = 0;

    The type of IntInsnNode instructions. /** The type of {@link IntInsnNode} instructions. */
    public static final int INT_INSN = 1;

    The type of VarInsnNode instructions. /** The type of {@link VarInsnNode} instructions. */
    public static final int VAR_INSN = 2;

    The type of TypeInsnNode instructions. /** The type of {@link TypeInsnNode} instructions. */
    public static final int TYPE_INSN = 3;

    The type of FieldInsnNode instructions. /** The type of {@link FieldInsnNode} instructions. */
    public static final int FIELD_INSN = 4;

    The type of MethodInsnNode instructions. /** The type of {@link MethodInsnNode} instructions. */
    public static final int METHOD_INSN = 5;

    The type of InvokeDynamicInsnNode instructions. /** The type of {@link InvokeDynamicInsnNode} instructions. */
    public static final int INVOKE_DYNAMIC_INSN = 6;

    The type of JumpInsnNode instructions. /** The type of {@link JumpInsnNode} instructions. */
    public static final int JUMP_INSN = 7;

    The type of LabelNode "instructions". /** The type of {@link LabelNode} "instructions". */
    public static final int LABEL = 8;

    The type of LdcInsnNode instructions. /** The type of {@link LdcInsnNode} instructions. */
    public static final int LDC_INSN = 9;

    The type of IincInsnNode instructions. /** The type of {@link IincInsnNode} instructions. */
    public static final int IINC_INSN = 10;

    The type of TableSwitchInsnNode instructions. /** The type of {@link TableSwitchInsnNode} instructions. */
    public static final int TABLESWITCH_INSN = 11;

    The type of LookupSwitchInsnNode instructions. /** The type of {@link LookupSwitchInsnNode} instructions. */
    public static final int LOOKUPSWITCH_INSN = 12;

    The type of MultiANewArrayInsnNode instructions. /** The type of {@link MultiANewArrayInsnNode} instructions. */
    public static final int MULTIANEWARRAY_INSN = 13;

    The type of FrameNode "instructions". /** The type of {@link FrameNode} "instructions". */
    public static final int FRAME = 14;

    The type of LineNumberNode "instructions". /** The type of {@link LineNumberNode} "instructions". */
    public static final int LINE = 15;

    The opcode of this instruction. /** The opcode of this instruction. */
    protected int opcode;

    The runtime visible type annotations of this instruction. This field is only used for real instructions (i.e. not for labels, frames, or line number nodes). This list is a list of TypeAnnotationNode objects. May be null. /**
      * The runtime visible type annotations of this instruction. This field is only used for real
      * instructions (i.e. not for labels, frames, or line number nodes). This list is a list of {@link
      * TypeAnnotationNode} objects. May be {@literal null}.
      */
    public List<TypeAnnotationNode> visibleTypeAnnotations;

    The runtime invisible type annotations of this instruction. This field is only used for real instructions (i.e. not for labels, frames, or line number nodes). This list is a list of TypeAnnotationNode objects. May be null. /**
      * The runtime invisible type annotations of this instruction. This field is only used for real
      * instructions (i.e. not for labels, frames, or line number nodes). This list is a list of {@link
      * TypeAnnotationNode} objects. May be {@literal null}.
      */
    public List<TypeAnnotationNode> invisibleTypeAnnotations;

    The previous instruction in the list to which this instruction belongs. /** The previous instruction in the list to which this instruction belongs. */
    AbstractInsnNode previousInsn;

    The next instruction in the list to which this instruction belongs. /** The next instruction in the list to which this instruction belongs. */
    AbstractInsnNode nextInsn;

    The index of this instruction in the list to which it belongs. The value of this field is correct only when InsnList.cache is not null. A value of -1 indicates that this instruction does not belong to any InsnList. /**
      * The index of this instruction in the list to which it belongs. The value of this field is
      * correct only when {@link InsnList#cache} is not null. A value of -1 indicates that this
      * instruction does not belong to any {@link InsnList}.
      */
    int index;

    Constructs a new AbstractInsnNode. 
Params: opcode – the opcode of the instruction to be constructed./**
      * Constructs a new {@link AbstractInsnNode}.
      *
      * @param opcode the opcode of the instruction to be constructed.
      */
    protected AbstractInsnNode(final int opcode) {
        this.opcode = opcode;
        this.index = -1;
    }

    Returns the opcode of this instruction.
Returns: the opcode of this instruction./**
      * Returns the opcode of this instruction.
      *
      * @return the opcode of this instruction.
      */
    public int getOpcode() {
        return opcode;
    }

    Returns the type of this instruction.
Returns: the type of this instruction, i.e. one the constants defined in this class./**
      * Returns the type of this instruction.
      *
      * @return the type of this instruction, i.e. one the constants defined in this class.
      */
    public abstract int getType();

    Returns the previous instruction in the list to which this instruction belongs, if any.
Returns: the previous instruction in the list to which this instruction belongs, if any. May be null./**
      * Returns the previous instruction in the list to which this instruction belongs, if any.
      *
      * @return the previous instruction in the list to which this instruction belongs, if any. May be
      *     {@literal null}.
      */
    public AbstractInsnNode getPrevious() {
        return previousInsn;
    }

    Returns the next instruction in the list to which this instruction belongs, if any.
Returns: the next instruction in the list to which this instruction belongs, if any. May be null./**
      * Returns the next instruction in the list to which this instruction belongs, if any.
      *
      * @return the next instruction in the list to which this instruction belongs, if any. May be
      *     {@literal null}.
      */
    public AbstractInsnNode getNext() {
        return nextInsn;
    }

    Makes the given method visitor visit this instruction.
Params: methodVisitor – a method visitor./**
      * Makes the given method visitor visit this instruction.
      *
      * @param methodVisitor a method visitor.
      */
    public abstract void accept(MethodVisitor methodVisitor);

    Makes the given visitor visit the annotations of this instruction.
Params: methodVisitor – a method visitor./**
      * Makes the given visitor visit the annotations of this instruction.
      *
      * @param methodVisitor a method visitor.
      */
    protected final void acceptAnnotations(final MethodVisitor methodVisitor) {
        if (visibleTypeAnnotations != null) {
            for (int i = 0, n = visibleTypeAnnotations.size(); i < n; ++i) {
                TypeAnnotationNode typeAnnotation = visibleTypeAnnotations.get(i);
                typeAnnotation.accept(
                        methodVisitor.visitInsnAnnotation(
                                typeAnnotation.typeRef, typeAnnotation.typePath, typeAnnotation.desc, true));
            }
        }
        if (invisibleTypeAnnotations != null) {
            for (int i = 0, n = invisibleTypeAnnotations.size(); i < n; ++i) {
                TypeAnnotationNode typeAnnotation = invisibleTypeAnnotations.get(i);
                typeAnnotation.accept(
                        methodVisitor.visitInsnAnnotation(
                                typeAnnotation.typeRef, typeAnnotation.typePath, typeAnnotation.desc, false));
            }
        }
    }

    Returns a copy of this instruction.
Params: clonedLabels – a map from LabelNodes to cloned LabelNodes.
Returns: a copy of this instruction. The returned instruction does not belong to any InsnList./**
      * Returns a copy of this instruction.
      *
      * @param clonedLabels a map from LabelNodes to cloned LabelNodes.
      * @return a copy of this instruction. The returned instruction does not belong to any {@link
      *     InsnList}.
      */
    public abstract AbstractInsnNode clone(Map<LabelNode, LabelNode> clonedLabels);

    Returns the clone of the given label.
Params: label – a label.
clonedLabels – a map from LabelNodes to cloned LabelNodes.
Returns: the clone of the given label./**
      * Returns the clone of the given label.
      *
      * @param label a label.
      * @param clonedLabels a map from LabelNodes to cloned LabelNodes.
      * @return the clone of the given label.
      */
    static LabelNode clone(final LabelNode label, final Map<LabelNode, LabelNode> clonedLabels) {
        return clonedLabels.get(label);
    }

    Returns the clones of the given labels.
Params: labels – a list of labels.
clonedLabels – a map from LabelNodes to cloned LabelNodes.
Returns: the clones of the given labels./**
      * Returns the clones of the given labels.
      *
      * @param labels a list of labels.
      * @param clonedLabels a map from LabelNodes to cloned LabelNodes.
      * @return the clones of the given labels.
      */
    static LabelNode[] clone(
            final List<LabelNode> labels, final Map<LabelNode, LabelNode> clonedLabels) {
        LabelNode[] clones = new LabelNode[labels.size()];
        for (int i = 0, n = clones.length; i < n; ++i) {
            clones[i] = clonedLabels.get(labels.get(i));
        }
        return clones;
    }

    Clones the annotations of the given instruction into this instruction.
Params: insnNode – the source instruction.
Returns: this instruction./**
      * Clones the annotations of the given instruction into this instruction.
      *
      * @param insnNode the source instruction.
      * @return this instruction.
      */
    protected final AbstractInsnNode cloneAnnotations(final AbstractInsnNode insnNode) {
        if (insnNode.visibleTypeAnnotations != null) {
            this.visibleTypeAnnotations = new ArrayList<>();
            for (int i = 0, n = insnNode.visibleTypeAnnotations.size(); i < n; ++i) {
                TypeAnnotationNode sourceAnnotation = insnNode.visibleTypeAnnotations.get(i);
                TypeAnnotationNode cloneAnnotation =
                        new TypeAnnotationNode(
                                sourceAnnotation.typeRef, sourceAnnotation.typePath, sourceAnnotation.desc);
                sourceAnnotation.accept(cloneAnnotation);
                this.visibleTypeAnnotations.add(cloneAnnotation);
            }
        }
        if (insnNode.invisibleTypeAnnotations != null) {
            this.invisibleTypeAnnotations = new ArrayList<>();
            for (int i = 0, n = insnNode.invisibleTypeAnnotations.size(); i < n; ++i) {
                TypeAnnotationNode sourceAnnotation = insnNode.invisibleTypeAnnotations.get(i);
                TypeAnnotationNode cloneAnnotation =
                        new TypeAnnotationNode(
                                sourceAnnotation.typeRef, sourceAnnotation.typePath, sourceAnnotation.desc);
                sourceAnnotation.accept(cloneAnnotation);
                this.invisibleTypeAnnotations.add(cloneAnnotation);
            }
        }
        return this;
    }
}
Params:	clonedLabels – a map from LabelNodes to cloned LabelNodes.
Returns:	a copy of this instruction. The returned instruction does not belong to any `InsnList`.
Params:	label – a label. clonedLabels – a map from LabelNodes to cloned LabelNodes.
Returns:	the clone of the given label.
Params:	labels – a list of labels. clonedLabels – a map from LabelNodes to cloned LabelNodes.
Returns:	the clones of the given labels.
Params:	insnNode – the source instruction.
Returns:	this instruction.
/

java/ 15/ java.base/jdk/internal/org/objectweb/asm/tree/AbstractInsnNode.java
