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Posted to commits@tapestry.apache.org by th...@apache.org on 2018/11/29 00:34:24 UTC
[37/46] tapestry-5 git commit: TAP5-2588: upgrading from ASM 6 to 7
for Java 9+ support
http://git-wip-us.apache.org/repos/asf/tapestry-5/blob/1c71aec7/plastic/src/external/java/org/apache/tapestry5/internal/plastic/asm/MethodVisitor.java
----------------------------------------------------------------------
diff --git a/plastic/src/external/java/org/apache/tapestry5/internal/plastic/asm/MethodVisitor.java b/plastic/src/external/java/org/apache/tapestry5/internal/plastic/asm/MethodVisitor.java
old mode 100644
new mode 100755
index ed5d751..cc47afd
--- a/plastic/src/external/java/org/apache/tapestry5/internal/plastic/asm/MethodVisitor.java
+++ b/plastic/src/external/java/org/apache/tapestry5/internal/plastic/asm/MethodVisitor.java
@@ -1,881 +1,781 @@
-/***
- * ASM: a very small and fast Java bytecode manipulation framework
- * Copyright (c) 2000-2011 INRIA, France Telecom
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the copyright holders nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
- * THE POSSIBILITY OF SUCH DAMAGE.
- */
+// ASM: a very small and fast Java bytecode manipulation framework
+// Copyright (c) 2000-2011 INRIA, France Telecom
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions
+// are met:
+// 1. Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// 2. Redistributions in binary form must reproduce the above copyright
+// notice, this list of conditions and the following disclaimer in the
+// documentation and/or other materials provided with the distribution.
+// 3. Neither the name of the copyright holders nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+// THE POSSIBILITY OF SUCH DAMAGE.
package org.apache.tapestry5.internal.plastic.asm;
/**
- * A visitor to visit a Java method. The methods of this class must be called in
- * the following order: ( <tt>visitParameter</tt> )* [
- * <tt>visitAnnotationDefault</tt> ] ( <tt>visitAnnotation</tt> |
- * <tt>visitParameterAnnotation</tt> <tt>visitTypeAnnotation</tt> |
- * <tt>visitAttribute</tt> )* [ <tt>visitCode</tt> ( <tt>visitFrame</tt> |
- * <tt>visit<i>X</i>Insn</tt> | <tt>visitLabel</tt> |
- * <tt>visitInsnAnnotation</tt> | <tt>visitTryCatchBlock</tt> |
- * <tt>visitTryCatchAnnotation</tt> | <tt>visitLocalVariable</tt> |
- * <tt>visitLocalVariableAnnotation</tt> | <tt>visitLineNumber</tt> )*
- * <tt>visitMaxs</tt> ] <tt>visitEnd</tt>. In addition, the
- * <tt>visit<i>X</i>Insn</tt> and <tt>visitLabel</tt> methods must be called in
- * the sequential order of the bytecode instructions of the visited code,
- * <tt>visitInsnAnnotation</tt> must be called <i>after</i> the annotated
- * instruction, <tt>visitTryCatchBlock</tt> must be called <i>before</i> the
- * labels passed as arguments have been visited,
- * <tt>visitTryCatchBlockAnnotation</tt> must be called <i>after</i> the
- * corresponding try catch block has been visited, and the
- * <tt>visitLocalVariable</tt>, <tt>visitLocalVariableAnnotation</tt> and
- * <tt>visitLineNumber</tt> methods must be called <i>after</i> the labels
- * passed as arguments have been visited.
- *
+ * A visitor to visit a Java method. The methods of this class must be called in the following
+ * order: ( {@code visitParameter} )* [ {@code visitAnnotationDefault} ] ( {@code visitAnnotation} |
+ * {@code visitAnnotableParameterCount} | {@code visitParameterAnnotation} {@code
+ * visitTypeAnnotation} | {@code visitAttribute} )* [ {@code visitCode} ( {@code visitFrame} |
+ * {@code visit<i>X</i>Insn} | {@code visitLabel} | {@code visitInsnAnnotation} | {@code
+ * visitTryCatchBlock} | {@code visitTryCatchAnnotation} | {@code visitLocalVariable} | {@code
+ * visitLocalVariableAnnotation} | {@code visitLineNumber} )* {@code visitMaxs} ] {@code visitEnd}.
+ * In addition, the {@code visit<i>X</i>Insn} and {@code visitLabel} methods must be called in the
+ * sequential order of the bytecode instructions of the visited code, {@code visitInsnAnnotation}
+ * must be called <i>after</i> the annotated instruction, {@code visitTryCatchBlock} must be called
+ * <i>before</i> the labels passed as arguments have been visited, {@code
+ * visitTryCatchBlockAnnotation} must be called <i>after</i> the corresponding try catch block has
+ * been visited, and the {@code visitLocalVariable}, {@code visitLocalVariableAnnotation} and {@code
+ * visitLineNumber} methods must be called <i>after</i> the labels passed as arguments have been
+ * visited.
+ *
* @author Eric Bruneton
*/
public abstract class MethodVisitor {
- /**
- * The ASM API version implemented by this visitor. The value of this field
- * must be one of {@link Opcodes#ASM4}, {@link Opcodes#ASM5} or {@link Opcodes#ASM6}.
- */
- protected final int api;
-
- /**
- * The method visitor to which this visitor must delegate method calls. May
- * be null.
- */
- protected MethodVisitor mv;
-
- /**
- * Constructs a new {@link MethodVisitor}.
- *
- * @param api
- * the ASM API version implemented by this visitor. Must be one
- * of {@link Opcodes#ASM4}, {@link Opcodes#ASM5} or {@link Opcodes#ASM6}.
- */
- public MethodVisitor(final int api) {
- this(api, null);
- }
-
- /**
- * Constructs a new {@link MethodVisitor}.
- *
- * @param api
- * the ASM API version implemented by this visitor. Must be one
- * of {@link Opcodes#ASM4}, {@link Opcodes#ASM5} or {@link Opcodes#ASM6}.
- * @param mv
- * the method visitor to which this visitor must delegate method
- * calls. May be null.
- */
- public MethodVisitor(final int api, final MethodVisitor mv) {
- if (api < Opcodes.ASM4 || api > Opcodes.ASM6) {
- throw new IllegalArgumentException();
- }
- this.api = api;
- this.mv = mv;
- }
-
- // -------------------------------------------------------------------------
- // Parameters, annotations and non standard attributes
- // -------------------------------------------------------------------------
-
- /**
- * Visits a parameter of this method.
- *
- * @param name
- * parameter name or null if none is provided.
- * @param access
- * the parameter's access flags, only <tt>ACC_FINAL</tt>,
- * <tt>ACC_SYNTHETIC</tt> or/and <tt>ACC_MANDATED</tt> are
- * allowed (see {@link Opcodes}).
- */
- public void visitParameter(String name, int access) {
- if (api < Opcodes.ASM5) {
- throw new RuntimeException();
- }
- if (mv != null) {
- mv.visitParameter(name, access);
- }
- }
-
- /**
- * Visits the default value of this annotation interface method.
- *
- * @return a visitor to the visit the actual default value of this
- * annotation interface method, or <tt>null</tt> if this visitor is
- * not interested in visiting this default value. The 'name'
- * parameters passed to the methods of this annotation visitor are
- * ignored. Moreover, exacly one visit method must be called on this
- * annotation visitor, followed by visitEnd.
- */
- public AnnotationVisitor visitAnnotationDefault() {
- if (mv != null) {
- return mv.visitAnnotationDefault();
- }
- return null;
- }
-
- /**
- * Visits an annotation of this method.
- *
- * @param desc
- * the class descriptor of the annotation class.
- * @param visible
- * <tt>true</tt> if the annotation is visible at runtime.
- * @return a visitor to visit the annotation values, or <tt>null</tt> if
- * this visitor is not interested in visiting this annotation.
- */
- public AnnotationVisitor visitAnnotation(String desc, boolean visible) {
- if (mv != null) {
- return mv.visitAnnotation(desc, visible);
- }
- return null;
- }
-
- /**
- * Visits an annotation on a type in the method signature.
- *
- * @param typeRef
- * a reference to the annotated type. The sort of this type
- * reference must be {@link TypeReference#METHOD_TYPE_PARAMETER
- * METHOD_TYPE_PARAMETER},
- * {@link TypeReference#METHOD_TYPE_PARAMETER_BOUND
- * METHOD_TYPE_PARAMETER_BOUND},
- * {@link TypeReference#METHOD_RETURN METHOD_RETURN},
- * {@link TypeReference#METHOD_RECEIVER METHOD_RECEIVER},
- * {@link TypeReference#METHOD_FORMAL_PARAMETER
- * METHOD_FORMAL_PARAMETER} or {@link TypeReference#THROWS
- * THROWS}. See {@link TypeReference}.
- * @param typePath
- * the path to the annotated type argument, wildcard bound, array
- * element type, or static inner type within 'typeRef'. May be
- * <tt>null</tt> if the annotation targets 'typeRef' as a whole.
- * @param desc
- * the class descriptor of the annotation class.
- * @param visible
- * <tt>true</tt> if the annotation is visible at runtime.
- * @return a visitor to visit the annotation values, or <tt>null</tt> if
- * this visitor is not interested in visiting this annotation.
- */
- public AnnotationVisitor visitTypeAnnotation(int typeRef,
- TypePath typePath, String desc, boolean visible) {
- if (api < Opcodes.ASM5) {
- throw new RuntimeException();
- }
- if (mv != null) {
- return mv.visitTypeAnnotation(typeRef, typePath, desc, visible);
- }
- return null;
- }
-
- /**
- * Visits an annotation of a parameter this method.
- *
- * @param parameter
- * the parameter index.
- * @param desc
- * the class descriptor of the annotation class.
- * @param visible
- * <tt>true</tt> if the annotation is visible at runtime.
- * @return a visitor to visit the annotation values, or <tt>null</tt> if
- * this visitor is not interested in visiting this annotation.
- */
- public AnnotationVisitor visitParameterAnnotation(int parameter,
- String desc, boolean visible) {
- if (mv != null) {
- return mv.visitParameterAnnotation(parameter, desc, visible);
- }
- return null;
- }
-
- /**
- * Visits a non standard attribute of this method.
- *
- * @param attr
- * an attribute.
- */
- public void visitAttribute(Attribute attr) {
- if (mv != null) {
- mv.visitAttribute(attr);
- }
- }
-
- /**
- * Starts the visit of the method's code, if any (i.e. non abstract method).
- */
- public void visitCode() {
- if (mv != null) {
- mv.visitCode();
- }
- }
-
- /**
- * Visits the current state of the local variables and operand stack
- * elements. This method must(*) be called <i>just before</i> any
- * instruction <b>i</b> that follows an unconditional branch instruction
- * such as GOTO or THROW, that is the target of a jump instruction, or that
- * starts an exception handler block. The visited types must describe the
- * values of the local variables and of the operand stack elements <i>just
- * before</i> <b>i</b> is executed.<br>
- * <br>
- * (*) this is mandatory only for classes whose version is greater than or
- * equal to {@link Opcodes#V1_6 V1_6}. <br>
- * <br>
- * The frames of a method must be given either in expanded form, or in
- * compressed form (all frames must use the same format, i.e. you must not
- * mix expanded and compressed frames within a single method):
- * <ul>
- * <li>In expanded form, all frames must have the F_NEW type.</li>
- * <li>In compressed form, frames are basically "deltas" from the state of
- * the previous frame:
- * <ul>
- * <li>{@link Opcodes#F_SAME} representing frame with exactly the same
- * locals as the previous frame and with the empty stack.</li>
- * <li>{@link Opcodes#F_SAME1} representing frame with exactly the same
- * locals as the previous frame and with single value on the stack (
- * <code>nStack</code> is 1 and <code>stack[0]</code> contains value for the
- * type of the stack item).</li>
- * <li>{@link Opcodes#F_APPEND} representing frame with current locals are
- * the same as the locals in the previous frame, except that additional
- * locals are defined (<code>nLocal</code> is 1, 2 or 3 and
- * <code>local</code> elements contains values representing added types).</li>
- * <li>{@link Opcodes#F_CHOP} representing frame with current locals are the
- * same as the locals in the previous frame, except that the last 1-3 locals
- * are absent and with the empty stack (<code>nLocals</code> is 1, 2 or 3).</li>
- * <li>{@link Opcodes#F_FULL} representing complete frame data.</li>
- * </ul>
- * </li>
- * </ul>
- * <br>
- * In both cases the first frame, corresponding to the method's parameters
- * and access flags, is implicit and must not be visited. Also, it is
- * illegal to visit two or more frames for the same code location (i.e., at
- * least one instruction must be visited between two calls to visitFrame).
- *
- * @param type
- * the type of this stack map frame. Must be
- * {@link Opcodes#F_NEW} for expanded frames, or
- * {@link Opcodes#F_FULL}, {@link Opcodes#F_APPEND},
- * {@link Opcodes#F_CHOP}, {@link Opcodes#F_SAME} or
- * {@link Opcodes#F_APPEND}, {@link Opcodes#F_SAME1} for
- * compressed frames.
- * @param nLocal
- * the number of local variables in the visited frame.
- * @param local
- * the local variable types in this frame. This array must not be
- * modified. Primitive types are represented by
- * {@link Opcodes#TOP}, {@link Opcodes#INTEGER},
- * {@link Opcodes#FLOAT}, {@link Opcodes#LONG},
- * {@link Opcodes#DOUBLE},{@link Opcodes#NULL} or
- * {@link Opcodes#UNINITIALIZED_THIS} (long and double are
- * represented by a single element). Reference types are
- * represented by String objects (representing internal names),
- * and uninitialized types by Label objects (this label
- * designates the NEW instruction that created this uninitialized
- * value).
- * @param nStack
- * the number of operand stack elements in the visited frame.
- * @param stack
- * the operand stack types in this frame. This array must not be
- * modified. Its content has the same format as the "local"
- * array.
- * @throws IllegalStateException
- * if a frame is visited just after another one, without any
- * instruction between the two (unless this frame is a
- * Opcodes#F_SAME frame, in which case it is silently ignored).
- */
- public void visitFrame(int type, int nLocal, Object[] local, int nStack,
- Object[] stack) {
- if (mv != null) {
- mv.visitFrame(type, nLocal, local, nStack, stack);
- }
- }
-
- // -------------------------------------------------------------------------
- // Normal instructions
- // -------------------------------------------------------------------------
-
- /**
- * Visits a zero operand instruction.
- *
- * @param opcode
- * the opcode of the instruction to be visited. This opcode is
- * either NOP, ACONST_NULL, ICONST_M1, ICONST_0, ICONST_1,
- * ICONST_2, ICONST_3, ICONST_4, ICONST_5, LCONST_0, LCONST_1,
- * FCONST_0, FCONST_1, FCONST_2, DCONST_0, DCONST_1, IALOAD,
- * LALOAD, FALOAD, DALOAD, AALOAD, BALOAD, CALOAD, SALOAD,
- * IASTORE, LASTORE, FASTORE, DASTORE, AASTORE, BASTORE, CASTORE,
- * SASTORE, POP, POP2, DUP, DUP_X1, DUP_X2, DUP2, DUP2_X1,
- * DUP2_X2, SWAP, IADD, LADD, FADD, DADD, ISUB, LSUB, FSUB, DSUB,
- * IMUL, LMUL, FMUL, DMUL, IDIV, LDIV, FDIV, DDIV, IREM, LREM,
- * FREM, DREM, INEG, LNEG, FNEG, DNEG, ISHL, LSHL, ISHR, LSHR,
- * IUSHR, LUSHR, IAND, LAND, IOR, LOR, IXOR, LXOR, I2L, I2F, I2D,
- * L2I, L2F, L2D, F2I, F2L, F2D, D2I, D2L, D2F, I2B, I2C, I2S,
- * LCMP, FCMPL, FCMPG, DCMPL, DCMPG, IRETURN, LRETURN, FRETURN,
- * DRETURN, ARETURN, RETURN, ARRAYLENGTH, ATHROW, MONITORENTER,
- * or MONITOREXIT.
- */
- public void visitInsn(int opcode) {
- if (mv != null) {
- mv.visitInsn(opcode);
- }
- }
-
- /**
- * Visits an instruction with a single int operand.
- *
- * @param opcode
- * the opcode of the instruction to be visited. This opcode is
- * either BIPUSH, SIPUSH or NEWARRAY.
- * @param operand
- * the operand of the instruction to be visited.<br>
- * When opcode is BIPUSH, operand value should be between
- * Byte.MIN_VALUE and Byte.MAX_VALUE.<br>
- * When opcode is SIPUSH, operand value should be between
- * Short.MIN_VALUE and Short.MAX_VALUE.<br>
- * When opcode is NEWARRAY, operand value should be one of
- * {@link Opcodes#T_BOOLEAN}, {@link Opcodes#T_CHAR},
- * {@link Opcodes#T_FLOAT}, {@link Opcodes#T_DOUBLE},
- * {@link Opcodes#T_BYTE}, {@link Opcodes#T_SHORT},
- * {@link Opcodes#T_INT} or {@link Opcodes#T_LONG}.
- */
- public void visitIntInsn(int opcode, int operand) {
- if (mv != null) {
- mv.visitIntInsn(opcode, operand);
- }
- }
-
- /**
- * Visits a local variable instruction. A local variable instruction is an
- * instruction that loads or stores the value of a local variable.
- *
- * @param opcode
- * the opcode of the local variable instruction to be visited.
- * This opcode is either ILOAD, LLOAD, FLOAD, DLOAD, ALOAD,
- * ISTORE, LSTORE, FSTORE, DSTORE, ASTORE or RET.
- * @param var
- * the operand of the instruction to be visited. This operand is
- * the index of a local variable.
- */
- public void visitVarInsn(int opcode, int var) {
- if (mv != null) {
- mv.visitVarInsn(opcode, var);
- }
- }
-
- /**
- * Visits a type instruction. A type instruction is an instruction that
- * takes the internal name of a class as parameter.
- *
- * @param opcode
- * the opcode of the type instruction to be visited. This opcode
- * is either NEW, ANEWARRAY, CHECKCAST or INSTANCEOF.
- * @param type
- * the operand of the instruction to be visited. This operand
- * must be the internal name of an object or array class (see
- * {@link Type#getInternalName() getInternalName}).
- */
- public void visitTypeInsn(int opcode, String type) {
- if (mv != null) {
- mv.visitTypeInsn(opcode, type);
- }
- }
-
- /**
- * Visits a field instruction. A field instruction is an instruction that
- * loads or stores the value of a field of an object.
- *
- * @param opcode
- * the opcode of the type instruction to be visited. This opcode
- * is either GETSTATIC, PUTSTATIC, GETFIELD or PUTFIELD.
- * @param owner
- * the internal name of the field's owner class (see
- * {@link Type#getInternalName() getInternalName}).
- * @param name
- * the field's name.
- * @param desc
- * the field's descriptor (see {@link Type Type}).
- */
- public void visitFieldInsn(int opcode, String owner, String name,
- String desc) {
- if (mv != null) {
- mv.visitFieldInsn(opcode, owner, name, desc);
- }
- }
-
- /**
- * Visits a method instruction. A method instruction is an instruction that
- * invokes a method.
- *
- * @param opcode
- * the opcode of the type instruction to be visited. This opcode
- * is either INVOKEVIRTUAL, INVOKESPECIAL, INVOKESTATIC or
- * INVOKEINTERFACE.
- * @param owner
- * the internal name of the method's owner class (see
- * {@link Type#getInternalName() getInternalName}).
- * @param name
- * the method's name.
- * @param desc
- * the method's descriptor (see {@link Type Type}).
- */
- @Deprecated
- public void visitMethodInsn(int opcode, String owner, String name,
- String desc) {
- if (api >= Opcodes.ASM5) {
- boolean itf = opcode == Opcodes.INVOKEINTERFACE;
- visitMethodInsn(opcode, owner, name, desc, itf);
- return;
- }
- if (mv != null) {
- mv.visitMethodInsn(opcode, owner, name, desc);
- }
- }
-
- /**
- * Visits a method instruction. A method instruction is an instruction that
- * invokes a method.
- *
- * @param opcode
- * the opcode of the type instruction to be visited. This opcode
- * is either INVOKEVIRTUAL, INVOKESPECIAL, INVOKESTATIC or
- * INVOKEINTERFACE.
- * @param owner
- * the internal name of the method's owner class (see
- * {@link Type#getInternalName() getInternalName}).
- * @param name
- * the method's name.
- * @param desc
- * the method's descriptor (see {@link Type Type}).
- * @param itf
- * if the method's owner class is an interface.
- */
- public void visitMethodInsn(int opcode, String owner, String name,
- String desc, boolean itf) {
- if (api < Opcodes.ASM5) {
- if (itf != (opcode == Opcodes.INVOKEINTERFACE)) {
- throw new IllegalArgumentException(
- "INVOKESPECIAL/STATIC on interfaces require ASM 5");
- }
- visitMethodInsn(opcode, owner, name, desc);
- return;
- }
- if (mv != null) {
- mv.visitMethodInsn(opcode, owner, name, desc, itf);
- }
- }
-
- /**
- * Visits an invokedynamic instruction.
- *
- * @param name
- * the method's name.
- * @param desc
- * the method's descriptor (see {@link Type Type}).
- * @param bsm
- * the bootstrap method.
- * @param bsmArgs
- * the bootstrap method constant arguments. Each argument must be
- * an {@link Integer}, {@link Float}, {@link Long},
- * {@link Double}, {@link String}, {@link Type} or {@link Handle}
- * value. This method is allowed to modify the content of the
- * array so a caller should expect that this array may change.
- */
- public void visitInvokeDynamicInsn(String name, String desc, Handle bsm,
- Object... bsmArgs) {
- if (mv != null) {
- mv.visitInvokeDynamicInsn(name, desc, bsm, bsmArgs);
- }
- }
-
- /**
- * Visits a jump instruction. A jump instruction is an instruction that may
- * jump to another instruction.
- *
- * @param opcode
- * the opcode of the type instruction to be visited. This opcode
- * is either IFEQ, IFNE, IFLT, IFGE, IFGT, IFLE, IF_ICMPEQ,
- * IF_ICMPNE, IF_ICMPLT, IF_ICMPGE, IF_ICMPGT, IF_ICMPLE,
- * IF_ACMPEQ, IF_ACMPNE, GOTO, JSR, IFNULL or IFNONNULL.
- * @param label
- * the operand of the instruction to be visited. This operand is
- * a label that designates the instruction to which the jump
- * instruction may jump.
- */
- public void visitJumpInsn(int opcode, Label label) {
- if (mv != null) {
- mv.visitJumpInsn(opcode, label);
- }
- }
-
- /**
- * Visits a label. A label designates the instruction that will be visited
- * just after it.
- *
- * @param label
- * a {@link Label Label} object.
- */
- public void visitLabel(Label label) {
- if (mv != null) {
- mv.visitLabel(label);
- }
- }
-
- // -------------------------------------------------------------------------
- // Special instructions
- // -------------------------------------------------------------------------
-
- /**
- * Visits a LDC instruction. Note that new constant types may be added in
- * future versions of the Java Virtual Machine. To easily detect new
- * constant types, implementations of this method should check for
- * unexpected constant types, like this:
- *
- * <pre>
- * if (cst instanceof Integer) {
- * // ...
- * } else if (cst instanceof Float) {
- * // ...
- * } else if (cst instanceof Long) {
- * // ...
- * } else if (cst instanceof Double) {
- * // ...
- * } else if (cst instanceof String) {
- * // ...
- * } else if (cst instanceof Type) {
- * int sort = ((Type) cst).getSort();
- * if (sort == Type.OBJECT) {
- * // ...
- * } else if (sort == Type.ARRAY) {
- * // ...
- * } else if (sort == Type.METHOD) {
- * // ...
- * } else {
- * // throw an exception
- * }
- * } else if (cst instanceof Handle) {
- * // ...
- * } else {
- * // throw an exception
- * }
- * </pre>
- *
- * @param cst
- * the constant to be loaded on the stack. This parameter must be
- * a non null {@link Integer}, a {@link Float}, a {@link Long}, a
- * {@link Double}, a {@link String}, a {@link Type} of OBJECT or
- * ARRAY sort for <tt>.class</tt> constants, for classes whose
- * version is 49.0, a {@link Type} of METHOD sort or a
- * {@link Handle} for MethodType and MethodHandle constants, for
- * classes whose version is 51.0.
- */
- public void visitLdcInsn(Object cst) {
- if (mv != null) {
- mv.visitLdcInsn(cst);
- }
- }
-
- /**
- * Visits an IINC instruction.
- *
- * @param var
- * index of the local variable to be incremented.
- * @param increment
- * amount to increment the local variable by.
- */
- public void visitIincInsn(int var, int increment) {
- if (mv != null) {
- mv.visitIincInsn(var, increment);
- }
- }
-
- /**
- * Visits a TABLESWITCH instruction.
- *
- * @param min
- * the minimum key value.
- * @param max
- * the maximum key value.
- * @param dflt
- * beginning of the default handler block.
- * @param labels
- * beginnings of the handler blocks. <tt>labels[i]</tt> is the
- * beginning of the handler block for the <tt>min + i</tt> key.
- */
- public void visitTableSwitchInsn(int min, int max, Label dflt,
- Label... labels) {
- if (mv != null) {
- mv.visitTableSwitchInsn(min, max, dflt, labels);
- }
- }
-
- /**
- * Visits a LOOKUPSWITCH instruction.
- *
- * @param dflt
- * beginning of the default handler block.
- * @param keys
- * the values of the keys.
- * @param labels
- * beginnings of the handler blocks. <tt>labels[i]</tt> is the
- * beginning of the handler block for the <tt>keys[i]</tt> key.
- */
- public void visitLookupSwitchInsn(Label dflt, int[] keys, Label[] labels) {
- if (mv != null) {
- mv.visitLookupSwitchInsn(dflt, keys, labels);
- }
- }
-
- /**
- * Visits a MULTIANEWARRAY instruction.
- *
- * @param desc
- * an array type descriptor (see {@link Type Type}).
- * @param dims
- * number of dimensions of the array to allocate.
- */
- public void visitMultiANewArrayInsn(String desc, int dims) {
- if (mv != null) {
- mv.visitMultiANewArrayInsn(desc, dims);
- }
- }
-
- /**
- * Visits an annotation on an instruction. This method must be called just
- * <i>after</i> the annotated instruction. It can be called several times
- * for the same instruction.
- *
- * @param typeRef
- * a reference to the annotated type. The sort of this type
- * reference must be {@link TypeReference#INSTANCEOF INSTANCEOF},
- * {@link TypeReference#NEW NEW},
- * {@link TypeReference#CONSTRUCTOR_REFERENCE
- * CONSTRUCTOR_REFERENCE}, {@link TypeReference#METHOD_REFERENCE
- * METHOD_REFERENCE}, {@link TypeReference#CAST CAST},
- * {@link TypeReference#CONSTRUCTOR_INVOCATION_TYPE_ARGUMENT
- * CONSTRUCTOR_INVOCATION_TYPE_ARGUMENT},
- * {@link TypeReference#METHOD_INVOCATION_TYPE_ARGUMENT
- * METHOD_INVOCATION_TYPE_ARGUMENT},
- * {@link TypeReference#CONSTRUCTOR_REFERENCE_TYPE_ARGUMENT
- * CONSTRUCTOR_REFERENCE_TYPE_ARGUMENT}, or
- * {@link TypeReference#METHOD_REFERENCE_TYPE_ARGUMENT
- * METHOD_REFERENCE_TYPE_ARGUMENT}. See {@link TypeReference}.
- * @param typePath
- * the path to the annotated type argument, wildcard bound, array
- * element type, or static inner type within 'typeRef'. May be
- * <tt>null</tt> if the annotation targets 'typeRef' as a whole.
- * @param desc
- * the class descriptor of the annotation class.
- * @param visible
- * <tt>true</tt> if the annotation is visible at runtime.
- * @return a visitor to visit the annotation values, or <tt>null</tt> if
- * this visitor is not interested in visiting this annotation.
- */
- public AnnotationVisitor visitInsnAnnotation(int typeRef,
- TypePath typePath, String desc, boolean visible) {
- if (api < Opcodes.ASM5) {
- throw new RuntimeException();
- }
- if (mv != null) {
- return mv.visitInsnAnnotation(typeRef, typePath, desc, visible);
- }
- return null;
- }
-
- // -------------------------------------------------------------------------
- // Exceptions table entries, debug information, max stack and max locals
- // -------------------------------------------------------------------------
-
- /**
- * Visits a try catch block.
- *
- * @param start
- * beginning of the exception handler's scope (inclusive).
- * @param end
- * end of the exception handler's scope (exclusive).
- * @param handler
- * beginning of the exception handler's code.
- * @param type
- * internal name of the type of exceptions handled by the
- * handler, or <tt>null</tt> to catch any exceptions (for
- * "finally" blocks).
- * @throws IllegalArgumentException
- * if one of the labels has already been visited by this visitor
- * (by the {@link #visitLabel visitLabel} method).
- */
- public void visitTryCatchBlock(Label start, Label end, Label handler,
- String type) {
- if (mv != null) {
- mv.visitTryCatchBlock(start, end, handler, type);
- }
- }
-
- /**
- * Visits an annotation on an exception handler type. This method must be
- * called <i>after</i> the {@link #visitTryCatchBlock} for the annotated
- * exception handler. It can be called several times for the same exception
- * handler.
- *
- * @param typeRef
- * a reference to the annotated type. The sort of this type
- * reference must be {@link TypeReference#EXCEPTION_PARAMETER
- * EXCEPTION_PARAMETER}. See {@link TypeReference}.
- * @param typePath
- * the path to the annotated type argument, wildcard bound, array
- * element type, or static inner type within 'typeRef'. May be
- * <tt>null</tt> if the annotation targets 'typeRef' as a whole.
- * @param desc
- * the class descriptor of the annotation class.
- * @param visible
- * <tt>true</tt> if the annotation is visible at runtime.
- * @return a visitor to visit the annotation values, or <tt>null</tt> if
- * this visitor is not interested in visiting this annotation.
- */
- public AnnotationVisitor visitTryCatchAnnotation(int typeRef,
- TypePath typePath, String desc, boolean visible) {
- if (api < Opcodes.ASM5) {
- throw new RuntimeException();
- }
- if (mv != null) {
- return mv.visitTryCatchAnnotation(typeRef, typePath, desc, visible);
- }
- return null;
- }
-
- /**
- * Visits a local variable declaration.
- *
- * @param name
- * the name of a local variable.
- * @param desc
- * the type descriptor of this local variable.
- * @param signature
- * the type signature of this local variable. May be
- * <tt>null</tt> if the local variable type does not use generic
- * types.
- * @param start
- * the first instruction corresponding to the scope of this local
- * variable (inclusive).
- * @param end
- * the last instruction corresponding to the scope of this local
- * variable (exclusive).
- * @param index
- * the local variable's index.
- * @throws IllegalArgumentException
- * if one of the labels has not already been visited by this
- * visitor (by the {@link #visitLabel visitLabel} method).
- */
- public void visitLocalVariable(String name, String desc, String signature,
- Label start, Label end, int index) {
- if (mv != null) {
- mv.visitLocalVariable(name, desc, signature, start, end, index);
- }
- }
-
- /**
- * Visits an annotation on a local variable type.
- *
- * @param typeRef
- * a reference to the annotated type. The sort of this type
- * reference must be {@link TypeReference#LOCAL_VARIABLE
- * LOCAL_VARIABLE} or {@link TypeReference#RESOURCE_VARIABLE
- * RESOURCE_VARIABLE}. See {@link TypeReference}.
- * @param typePath
- * the path to the annotated type argument, wildcard bound, array
- * element type, or static inner type within 'typeRef'. May be
- * <tt>null</tt> if the annotation targets 'typeRef' as a whole.
- * @param start
- * the fist instructions corresponding to the continuous ranges
- * that make the scope of this local variable (inclusive).
- * @param end
- * the last instructions corresponding to the continuous ranges
- * that make the scope of this local variable (exclusive). This
- * array must have the same size as the 'start' array.
- * @param index
- * the local variable's index in each range. This array must have
- * the same size as the 'start' array.
- * @param desc
- * the class descriptor of the annotation class.
- * @param visible
- * <tt>true</tt> if the annotation is visible at runtime.
- * @return a visitor to visit the annotation values, or <tt>null</tt> if
- * this visitor is not interested in visiting this annotation.
- */
- public AnnotationVisitor visitLocalVariableAnnotation(int typeRef,
- TypePath typePath, Label[] start, Label[] end, int[] index,
- String desc, boolean visible) {
- if (api < Opcodes.ASM5) {
- throw new RuntimeException();
- }
- if (mv != null) {
- return mv.visitLocalVariableAnnotation(typeRef, typePath, start,
- end, index, desc, visible);
- }
- return null;
- }
-
- /**
- * Visits a line number declaration.
- *
- * @param line
- * a line number. This number refers to the source file from
- * which the class was compiled.
- * @param start
- * the first instruction corresponding to this line number.
- * @throws IllegalArgumentException
- * if <tt>start</tt> has not already been visited by this
- * visitor (by the {@link #visitLabel visitLabel} method).
- */
- public void visitLineNumber(int line, Label start) {
- if (mv != null) {
- mv.visitLineNumber(line, start);
- }
- }
-
- /**
- * Visits the maximum stack size and the maximum number of local variables
- * of the method.
- *
- * @param maxStack
- * maximum stack size of the method.
- * @param maxLocals
- * maximum number of local variables for the method.
- */
- public void visitMaxs(int maxStack, int maxLocals) {
- if (mv != null) {
- mv.visitMaxs(maxStack, maxLocals);
- }
- }
-
- /**
- * Visits the end of the method. This method, which is the last one to be
- * called, is used to inform the visitor that all the annotations and
- * attributes of the method have been visited.
- */
- public void visitEnd() {
- if (mv != null) {
- mv.visitEnd();
- }
- }
+ private static final String REQUIRES_ASM5 = "This feature requires ASM5";
+
+ /**
+ * The ASM API version implemented by this visitor. The value of this field must be one of {@link
+ * Opcodes#ASM4}, {@link Opcodes#ASM5}, {@link Opcodes#ASM6} or {@link Opcodes#ASM7}.
+ */
+ protected final int api;
+
+ /** The method visitor to which this visitor must delegate method calls. May be null. */
+ protected MethodVisitor mv;
+
+ /**
+ * Constructs a new {@link MethodVisitor}.
+ *
+ * @param api the ASM API version implemented by this visitor. Must be one of {@link
+ * Opcodes#ASM4}, {@link Opcodes#ASM5}, {@link Opcodes#ASM6} or {@link Opcodes#ASM7}.
+ */
+ public MethodVisitor(final int api) {
+ this(api, null);
+ }
+
+ /**
+ * Constructs a new {@link MethodVisitor}.
+ *
+ * @param api the ASM API version implemented by this visitor. Must be one of {@link
+ * Opcodes#ASM4}, {@link Opcodes#ASM5}, {@link Opcodes#ASM6} or {@link Opcodes#ASM7}.
+ * @param methodVisitor the method visitor to which this visitor must delegate method calls. May
+ * be null.
+ */
+ public MethodVisitor(final int api, final MethodVisitor methodVisitor) {
+ if (api != Opcodes.ASM6 && api != Opcodes.ASM5 && api != Opcodes.ASM4 && api != Opcodes.ASM7) {
+ throw new IllegalArgumentException();
+ }
+ this.api = api;
+ this.mv = methodVisitor;
+ }
+
+ // -----------------------------------------------------------------------------------------------
+ // Parameters, annotations and non standard attributes
+ // -----------------------------------------------------------------------------------------------
+
+ /**
+ * Visits a parameter of this method.
+ *
+ * @param name parameter name or null if none is provided.
+ * @param access the parameter's access flags, only {@code ACC_FINAL}, {@code ACC_SYNTHETIC}
+ * or/and {@code ACC_MANDATED} are allowed (see {@link Opcodes}).
+ */
+ public void visitParameter(final String name, final int access) {
+ if (api < Opcodes.ASM5) {
+ throw new UnsupportedOperationException(REQUIRES_ASM5);
+ }
+ if (mv != null) {
+ mv.visitParameter(name, access);
+ }
+ }
+
+ /**
+ * Visits the default value of this annotation interface method.
+ *
+ * @return a visitor to the visit the actual default value of this annotation interface method, or
+ * {@literal null} if this visitor is not interested in visiting this default value. The
+ * 'name' parameters passed to the methods of this annotation visitor are ignored. Moreover,
+ * exacly one visit method must be called on this annotation visitor, followed by visitEnd.
+ */
+ public AnnotationVisitor visitAnnotationDefault() {
+ if (mv != null) {
+ return mv.visitAnnotationDefault();
+ }
+ return null;
+ }
+
+ /**
+ * Visits an annotation of this method.
+ *
+ * @param descriptor the class descriptor of the annotation class.
+ * @param visible {@literal true} if the annotation is visible at runtime.
+ * @return a visitor to visit the annotation values, or {@literal null} if this visitor is not
+ * interested in visiting this annotation.
+ */
+ public AnnotationVisitor visitAnnotation(final String descriptor, final boolean visible) {
+ if (mv != null) {
+ return mv.visitAnnotation(descriptor, visible);
+ }
+ return null;
+ }
+
+ /**
+ * Visits an annotation on a type in the method signature.
+ *
+ * @param typeRef a reference to the annotated type. The sort of this type reference must be
+ * {@link TypeReference#METHOD_TYPE_PARAMETER}, {@link
+ * TypeReference#METHOD_TYPE_PARAMETER_BOUND}, {@link TypeReference#METHOD_RETURN}, {@link
+ * TypeReference#METHOD_RECEIVER}, {@link TypeReference#METHOD_FORMAL_PARAMETER} or {@link
+ * TypeReference#THROWS}. See {@link TypeReference}.
+ * @param typePath the path to the annotated type argument, wildcard bound, array element type, or
+ * static inner type within 'typeRef'. May be {@literal null} if the annotation targets
+ * 'typeRef' as a whole.
+ * @param descriptor the class descriptor of the annotation class.
+ * @param visible {@literal true} if the annotation is visible at runtime.
+ * @return a visitor to visit the annotation values, or {@literal null} if this visitor is not
+ * interested in visiting this annotation.
+ */
+ public AnnotationVisitor visitTypeAnnotation(
+ final int typeRef, final TypePath typePath, final String descriptor, final boolean visible) {
+ if (api < Opcodes.ASM5) {
+ throw new UnsupportedOperationException(REQUIRES_ASM5);
+ }
+ if (mv != null) {
+ return mv.visitTypeAnnotation(typeRef, typePath, descriptor, visible);
+ }
+ return null;
+ }
+
+ /**
+ * Visits the number of method parameters that can have annotations. By default (i.e. when this
+ * method is not called), all the method parameters defined by the method descriptor can have
+ * annotations.
+ *
+ * @param parameterCount the number of method parameters than can have annotations. This number
+ * must be less or equal than the number of parameter types in the method descriptor. It can
+ * be strictly less when a method has synthetic parameters and when these parameters are
+ * ignored when computing parameter indices for the purpose of parameter annotations (see
+ * https://docs.oracle.com/javase/specs/jvms/se9/html/jvms-4.html#jvms-4.7.18).
+ * @param visible {@literal true} to define the number of method parameters that can have
+ * annotations visible at runtime, {@literal false} to define the number of method parameters
+ * that can have annotations invisible at runtime.
+ */
+ public void visitAnnotableParameterCount(final int parameterCount, final boolean visible) {
+ if (mv != null) {
+ mv.visitAnnotableParameterCount(parameterCount, visible);
+ }
+ }
+
+ /**
+ * Visits an annotation of a parameter this method.
+ *
+ * @param parameter the parameter index. This index must be strictly smaller than the number of
+ * parameters in the method descriptor, and strictly smaller than the parameter count
+ * specified in {@link #visitAnnotableParameterCount}. Important note: <i>a parameter index i
+ * is not required to correspond to the i'th parameter descriptor in the method
+ * descriptor</i>, in particular in case of synthetic parameters (see
+ * https://docs.oracle.com/javase/specs/jvms/se9/html/jvms-4.html#jvms-4.7.18).
+ * @param descriptor the class descriptor of the annotation class.
+ * @param visible {@literal true} if the annotation is visible at runtime.
+ * @return a visitor to visit the annotation values, or {@literal null} if this visitor is not
+ * interested in visiting this annotation.
+ */
+ public AnnotationVisitor visitParameterAnnotation(
+ final int parameter, final String descriptor, final boolean visible) {
+ if (mv != null) {
+ return mv.visitParameterAnnotation(parameter, descriptor, visible);
+ }
+ return null;
+ }
+
+ /**
+ * Visits a non standard attribute of this method.
+ *
+ * @param attribute an attribute.
+ */
+ public void visitAttribute(final Attribute attribute) {
+ if (mv != null) {
+ mv.visitAttribute(attribute);
+ }
+ }
+
+ /** Starts the visit of the method's code, if any (i.e. non abstract method). */
+ public void visitCode() {
+ if (mv != null) {
+ mv.visitCode();
+ }
+ }
+
+ /**
+ * Visits the current state of the local variables and operand stack elements. This method must(*)
+ * be called <i>just before</i> any instruction <b>i</b> that follows an unconditional branch
+ * instruction such as GOTO or THROW, that is the target of a jump instruction, or that starts an
+ * exception handler block. The visited types must describe the values of the local variables and
+ * of the operand stack elements <i>just before</i> <b>i</b> is executed.<br>
+ * <br>
+ * (*) this is mandatory only for classes whose version is greater than or equal to {@link
+ * Opcodes#V1_6}. <br>
+ * <br>
+ * The frames of a method must be given either in expanded form, or in compressed form (all frames
+ * must use the same format, i.e. you must not mix expanded and compressed frames within a single
+ * method):
+ *
+ * <ul>
+ * <li>In expanded form, all frames must have the F_NEW type.
+ * <li>In compressed form, frames are basically "deltas" from the state of the previous frame:
+ * <ul>
+ * <li>{@link Opcodes#F_SAME} representing frame with exactly the same locals as the
+ * previous frame and with the empty stack.
+ * <li>{@link Opcodes#F_SAME1} representing frame with exactly the same locals as the
+ * previous frame and with single value on the stack ( <code>numStack</code> is 1 and
+ * <code>stack[0]</code> contains value for the type of the stack item).
+ * <li>{@link Opcodes#F_APPEND} representing frame with current locals are the same as the
+ * locals in the previous frame, except that additional locals are defined (<code>
+ * numLocal</code> is 1, 2 or 3 and <code>local</code> elements contains values
+ * representing added types).
+ * <li>{@link Opcodes#F_CHOP} representing frame with current locals are the same as the
+ * locals in the previous frame, except that the last 1-3 locals are absent and with
+ * the empty stack (<code>numLocal</code> is 1, 2 or 3).
+ * <li>{@link Opcodes#F_FULL} representing complete frame data.
+ * </ul>
+ * </ul>
+ *
+ * <br>
+ * In both cases the first frame, corresponding to the method's parameters and access flags, is
+ * implicit and must not be visited. Also, it is illegal to visit two or more frames for the same
+ * code location (i.e., at least one instruction must be visited between two calls to visitFrame).
+ *
+ * @param type the type of this stack map frame. Must be {@link Opcodes#F_NEW} for expanded
+ * frames, or {@link Opcodes#F_FULL}, {@link Opcodes#F_APPEND}, {@link Opcodes#F_CHOP}, {@link
+ * Opcodes#F_SAME} or {@link Opcodes#F_APPEND}, {@link Opcodes#F_SAME1} for compressed frames.
+ * @param numLocal the number of local variables in the visited frame.
+ * @param local the local variable types in this frame. This array must not be modified. Primitive
+ * types are represented by {@link Opcodes#TOP}, {@link Opcodes#INTEGER}, {@link
+ * Opcodes#FLOAT}, {@link Opcodes#LONG}, {@link Opcodes#DOUBLE}, {@link Opcodes#NULL} or
+ * {@link Opcodes#UNINITIALIZED_THIS} (long and double are represented by a single element).
+ * Reference types are represented by String objects (representing internal names), and
+ * uninitialized types by Label objects (this label designates the NEW instruction that
+ * created this uninitialized value).
+ * @param numStack the number of operand stack elements in the visited frame.
+ * @param stack the operand stack types in this frame. This array must not be modified. Its
+ * content has the same format as the "local" array.
+ * @throws IllegalStateException if a frame is visited just after another one, without any
+ * instruction between the two (unless this frame is a Opcodes#F_SAME frame, in which case it
+ * is silently ignored).
+ */
+ public void visitFrame(
+ final int type,
+ final int numLocal,
+ final Object[] local,
+ final int numStack,
+ final Object[] stack) {
+ if (mv != null) {
+ mv.visitFrame(type, numLocal, local, numStack, stack);
+ }
+ }
+
+ // -----------------------------------------------------------------------------------------------
+ // Normal instructions
+ // -----------------------------------------------------------------------------------------------
+
+ /**
+ * Visits a zero operand instruction.
+ *
+ * @param opcode the opcode of the instruction to be visited. This opcode is either NOP,
+ * ACONST_NULL, ICONST_M1, ICONST_0, ICONST_1, ICONST_2, ICONST_3, ICONST_4, ICONST_5,
+ * LCONST_0, LCONST_1, FCONST_0, FCONST_1, FCONST_2, DCONST_0, DCONST_1, IALOAD, LALOAD,
+ * FALOAD, DALOAD, AALOAD, BALOAD, CALOAD, SALOAD, IASTORE, LASTORE, FASTORE, DASTORE,
+ * AASTORE, BASTORE, CASTORE, SASTORE, POP, POP2, DUP, DUP_X1, DUP_X2, DUP2, DUP2_X1, DUP2_X2,
+ * SWAP, IADD, LADD, FADD, DADD, ISUB, LSUB, FSUB, DSUB, IMUL, LMUL, FMUL, DMUL, IDIV, LDIV,
+ * FDIV, DDIV, IREM, LREM, FREM, DREM, INEG, LNEG, FNEG, DNEG, ISHL, LSHL, ISHR, LSHR, IUSHR,
+ * LUSHR, IAND, LAND, IOR, LOR, IXOR, LXOR, I2L, I2F, I2D, L2I, L2F, L2D, F2I, F2L, F2D, D2I,
+ * D2L, D2F, I2B, I2C, I2S, LCMP, FCMPL, FCMPG, DCMPL, DCMPG, IRETURN, LRETURN, FRETURN,
+ * DRETURN, ARETURN, RETURN, ARRAYLENGTH, ATHROW, MONITORENTER, or MONITOREXIT.
+ */
+ public void visitInsn(final int opcode) {
+ if (mv != null) {
+ mv.visitInsn(opcode);
+ }
+ }
+
+ /**
+ * Visits an instruction with a single int operand.
+ *
+ * @param opcode the opcode of the instruction to be visited. This opcode is either BIPUSH, SIPUSH
+ * or NEWARRAY.
+ * @param operand the operand of the instruction to be visited.<br>
+ * When opcode is BIPUSH, operand value should be between Byte.MIN_VALUE and Byte.MAX_VALUE.
+ * <br>
+ * When opcode is SIPUSH, operand value should be between Short.MIN_VALUE and Short.MAX_VALUE.
+ * <br>
+ * When opcode is NEWARRAY, operand value should be one of {@link Opcodes#T_BOOLEAN}, {@link
+ * Opcodes#T_CHAR}, {@link Opcodes#T_FLOAT}, {@link Opcodes#T_DOUBLE}, {@link Opcodes#T_BYTE},
+ * {@link Opcodes#T_SHORT}, {@link Opcodes#T_INT} or {@link Opcodes#T_LONG}.
+ */
+ public void visitIntInsn(final int opcode, final int operand) {
+ if (mv != null) {
+ mv.visitIntInsn(opcode, operand);
+ }
+ }
+
+ /**
+ * Visits a local variable instruction. A local variable instruction is an instruction that loads
+ * or stores the value of a local variable.
+ *
+ * @param opcode the opcode of the local variable instruction to be visited. This opcode is either
+ * ILOAD, LLOAD, FLOAD, DLOAD, ALOAD, ISTORE, LSTORE, FSTORE, DSTORE, ASTORE or RET.
+ * @param var the operand of the instruction to be visited. This operand is the index of a local
+ * variable.
+ */
+ public void visitVarInsn(final int opcode, final int var) {
+ if (mv != null) {
+ mv.visitVarInsn(opcode, var);
+ }
+ }
+
+ /**
+ * Visits a type instruction. A type instruction is an instruction that takes the internal name of
+ * a class as parameter.
+ *
+ * @param opcode the opcode of the type instruction to be visited. This opcode is either NEW,
+ * ANEWARRAY, CHECKCAST or INSTANCEOF.
+ * @param type the operand of the instruction to be visited. This operand must be the internal
+ * name of an object or array class (see {@link Type#getInternalName()}).
+ */
+ public void visitTypeInsn(final int opcode, final String type) {
+ if (mv != null) {
+ mv.visitTypeInsn(opcode, type);
+ }
+ }
+
+ /**
+ * Visits a field instruction. A field instruction is an instruction that loads or stores the
+ * value of a field of an object.
+ *
+ * @param opcode the opcode of the type instruction to be visited. This opcode is either
+ * GETSTATIC, PUTSTATIC, GETFIELD or PUTFIELD.
+ * @param owner the internal name of the field's owner class (see {@link Type#getInternalName()}).
+ * @param name the field's name.
+ * @param descriptor the field's descriptor (see {@link Type}).
+ */
+ public void visitFieldInsn(
+ final int opcode, final String owner, final String name, final String descriptor) {
+ if (mv != null) {
+ mv.visitFieldInsn(opcode, owner, name, descriptor);
+ }
+ }
+
+ /**
+ * Visits a method instruction. A method instruction is an instruction that invokes a method.
+ *
+ * @param opcode the opcode of the type instruction to be visited. This opcode is either
+ * INVOKEVIRTUAL, INVOKESPECIAL, INVOKESTATIC or INVOKEINTERFACE.
+ * @param owner the internal name of the method's owner class (see {@link
+ * Type#getInternalName()}).
+ * @param name the method's name.
+ * @param descriptor the method's descriptor (see {@link Type}).
+ * @deprecated use {@link #visitMethodInsn(int, String, String, String, boolean)} instead.
+ */
+ @Deprecated
+ public void visitMethodInsn(
+ final int opcode, final String owner, final String name, final String descriptor) {
+ if (api >= Opcodes.ASM5) {
+ boolean isInterface = opcode == Opcodes.INVOKEINTERFACE;
+ visitMethodInsn(opcode, owner, name, descriptor, isInterface);
+ return;
+ }
+ if (mv != null) {
+ mv.visitMethodInsn(opcode, owner, name, descriptor);
+ }
+ }
+
+ /**
+ * Visits a method instruction. A method instruction is an instruction that invokes a method.
+ *
+ * @param opcode the opcode of the type instruction to be visited. This opcode is either
+ * INVOKEVIRTUAL, INVOKESPECIAL, INVOKESTATIC or INVOKEINTERFACE.
+ * @param owner the internal name of the method's owner class (see {@link
+ * Type#getInternalName()}).
+ * @param name the method's name.
+ * @param descriptor the method's descriptor (see {@link Type}).
+ * @param isInterface if the method's owner class is an interface.
+ */
+ public void visitMethodInsn(
+ final int opcode,
+ final String owner,
+ final String name,
+ final String descriptor,
+ final boolean isInterface) {
+ if (api < Opcodes.ASM5) {
+ if (isInterface != (opcode == Opcodes.INVOKEINTERFACE)) {
+ throw new IllegalArgumentException("INVOKESPECIAL/STATIC on interfaces requires ASM5");
+ }
+ visitMethodInsn(opcode, owner, name, descriptor);
+ return;
+ }
+ if (mv != null) {
+ mv.visitMethodInsn(opcode, owner, name, descriptor, isInterface);
+ }
+ }
+
+ /**
+ * Visits an invokedynamic instruction.
+ *
+ * @param name the method's name.
+ * @param descriptor the method's descriptor (see {@link Type}).
+ * @param bootstrapMethodHandle the bootstrap method.
+ * @param bootstrapMethodArguments the bootstrap method constant arguments. Each argument must be
+ * an {@link Integer}, {@link Float}, {@link Long}, {@link Double}, {@link String}, {@link
+ * Type}, {@link Handle} or {@link ConstantDynamic} value. This method is allowed to modify
+ * the content of the array so a caller should expect that this array may change.
+ */
+ public void visitInvokeDynamicInsn(
+ final String name,
+ final String descriptor,
+ final Handle bootstrapMethodHandle,
+ final Object... bootstrapMethodArguments) {
+ if (api < Opcodes.ASM5) {
+ throw new UnsupportedOperationException(REQUIRES_ASM5);
+ }
+ if (mv != null) {
+ mv.visitInvokeDynamicInsn(name, descriptor, bootstrapMethodHandle, bootstrapMethodArguments);
+ }
+ }
+
+ /**
+ * Visits a jump instruction. A jump instruction is an instruction that may jump to another
+ * instruction.
+ *
+ * @param opcode the opcode of the type instruction to be visited. This opcode is either IFEQ,
+ * IFNE, IFLT, IFGE, IFGT, IFLE, IF_ICMPEQ, IF_ICMPNE, IF_ICMPLT, IF_ICMPGE, IF_ICMPGT,
+ * IF_ICMPLE, IF_ACMPEQ, IF_ACMPNE, GOTO, JSR, IFNULL or IFNONNULL.
+ * @param label the operand of the instruction to be visited. This operand is a label that
+ * designates the instruction to which the jump instruction may jump.
+ */
+ public void visitJumpInsn(final int opcode, final Label label) {
+ if (mv != null) {
+ mv.visitJumpInsn(opcode, label);
+ }
+ }
+
+ /**
+ * Visits a label. A label designates the instruction that will be visited just after it.
+ *
+ * @param label a {@link Label} object.
+ */
+ public void visitLabel(final Label label) {
+ if (mv != null) {
+ mv.visitLabel(label);
+ }
+ }
+
+ // -----------------------------------------------------------------------------------------------
+ // Special instructions
+ // -----------------------------------------------------------------------------------------------
+
+ /**
+ * Visits a LDC instruction. Note that new constant types may be added in future versions of the
+ * Java Virtual Machine. To easily detect new constant types, implementations of this method
+ * should check for unexpected constant types, like this:
+ *
+ * <pre>
+ * if (cst instanceof Integer) {
+ * // ...
+ * } else if (cst instanceof Float) {
+ * // ...
+ * } else if (cst instanceof Long) {
+ * // ...
+ * } else if (cst instanceof Double) {
+ * // ...
+ * } else if (cst instanceof String) {
+ * // ...
+ * } else if (cst instanceof Type) {
+ * int sort = ((Type) cst).getSort();
+ * if (sort == Type.OBJECT) {
+ * // ...
+ * } else if (sort == Type.ARRAY) {
+ * // ...
+ * } else if (sort == Type.METHOD) {
+ * // ...
+ * } else {
+ * // throw an exception
+ * }
+ * } else if (cst instanceof Handle) {
+ * // ...
+ * } else if (cst instanceof ConstantDynamic) {
+ * // ...
+ * } else {
+ * // throw an exception
+ * }
+ * </pre>
+ *
+ * @param value the constant to be loaded on the stack. This parameter must be a non null {@link
+ * Integer}, a {@link Float}, a {@link Long}, a {@link Double}, a {@link String}, a {@link
+ * Type} of OBJECT or ARRAY sort for {@code .class} constants, for classes whose version is
+ * 49, a {@link Type} of METHOD sort for MethodType, a {@link Handle} for MethodHandle
+ * constants, for classes whose version is 51 or a {@link ConstantDynamic} for a constant
+ * dynamic for classes whose version is 55.
+ */
+ public void visitLdcInsn(final Object value) {
+ if (api < Opcodes.ASM5
+ && (value instanceof Handle
+ || (value instanceof Type && ((Type) value).getSort() == Type.METHOD))) {
+ throw new UnsupportedOperationException(REQUIRES_ASM5);
+ }
+ if (api != Opcodes.ASM7 && value instanceof ConstantDynamic) {
+ throw new UnsupportedOperationException("This feature requires ASM7");
+ }
+ if (mv != null) {
+ mv.visitLdcInsn(value);
+ }
+ }
+
+ /**
+ * Visits an IINC instruction.
+ *
+ * @param var index of the local variable to be incremented.
+ * @param increment amount to increment the local variable by.
+ */
+ public void visitIincInsn(final int var, final int increment) {
+ if (mv != null) {
+ mv.visitIincInsn(var, increment);
+ }
+ }
+
+ /**
+ * Visits a TABLESWITCH instruction.
+ *
+ * @param min the minimum key value.
+ * @param max the maximum key value.
+ * @param dflt beginning of the default handler block.
+ * @param labels beginnings of the handler blocks. {@code labels[i]} is the beginning of the
+ * handler block for the {@code min + i} key.
+ */
+ public void visitTableSwitchInsn(
+ final int min, final int max, final Label dflt, final Label... labels) {
+ if (mv != null) {
+ mv.visitTableSwitchInsn(min, max, dflt, labels);
+ }
+ }
+
+ /**
+ * Visits a LOOKUPSWITCH instruction.
+ *
+ * @param dflt beginning of the default handler block.
+ * @param keys the values of the keys.
+ * @param labels beginnings of the handler blocks. {@code labels[i]} is the beginning of the
+ * handler block for the {@code keys[i]} key.
+ */
+ public void visitLookupSwitchInsn(final Label dflt, final int[] keys, final Label[] labels) {
+ if (mv != null) {
+ mv.visitLookupSwitchInsn(dflt, keys, labels);
+ }
+ }
+
+ /**
+ * Visits a MULTIANEWARRAY instruction.
+ *
+ * @param descriptor an array type descriptor (see {@link Type}).
+ * @param numDimensions the number of dimensions of the array to allocate.
+ */
+ public void visitMultiANewArrayInsn(final String descriptor, final int numDimensions) {
+ if (mv != null) {
+ mv.visitMultiANewArrayInsn(descriptor, numDimensions);
+ }
+ }
+
+ /**
+ * Visits an annotation on an instruction. This method must be called just <i>after</i> the
+ * annotated instruction. It can be called several times for the same instruction.
+ *
+ * @param typeRef a reference to the annotated type. The sort of this type reference must be
+ * {@link TypeReference#INSTANCEOF}, {@link TypeReference#NEW}, {@link
+ * TypeReference#CONSTRUCTOR_REFERENCE}, {@link TypeReference#METHOD_REFERENCE}, {@link
+ * TypeReference#CAST}, {@link TypeReference#CONSTRUCTOR_INVOCATION_TYPE_ARGUMENT}, {@link
+ * TypeReference#METHOD_INVOCATION_TYPE_ARGUMENT}, {@link
+ * TypeReference#CONSTRUCTOR_REFERENCE_TYPE_ARGUMENT}, or {@link
+ * TypeReference#METHOD_REFERENCE_TYPE_ARGUMENT}. See {@link TypeReference}.
+ * @param typePath the path to the annotated type argument, wildcard bound, array element type, or
+ * static inner type within 'typeRef'. May be {@literal null} if the annotation targets
+ * 'typeRef' as a whole.
+ * @param descriptor the class descriptor of the annotation class.
+ * @param visible {@literal true} if the annotation is visible at runtime.
+ * @return a visitor to visit the annotation values, or {@literal null} if this visitor is not
+ * interested in visiting this annotation.
+ */
+ public AnnotationVisitor visitInsnAnnotation(
+ final int typeRef, final TypePath typePath, final String descriptor, final boolean visible) {
+ if (api < Opcodes.ASM5) {
+ throw new UnsupportedOperationException(REQUIRES_ASM5);
+ }
+ if (mv != null) {
+ return mv.visitInsnAnnotation(typeRef, typePath, descriptor, visible);
+ }
+ return null;
+ }
+
+ // -----------------------------------------------------------------------------------------------
+ // Exceptions table entries, debug information, max stack and max locals
+ // -----------------------------------------------------------------------------------------------
+
+ /**
+ * Visits a try catch block.
+ *
+ * @param start the beginning of the exception handler's scope (inclusive).
+ * @param end the end of the exception handler's scope (exclusive).
+ * @param handler the beginning of the exception handler's code.
+ * @param type the internal name of the type of exceptions handled by the handler, or {@literal
+ * null} to catch any exceptions (for "finally" blocks).
+ * @throws IllegalArgumentException if one of the labels has already been visited by this visitor
+ * (by the {@link #visitLabel} method).
+ */
+ public void visitTryCatchBlock(
+ final Label start, final Label end, final Label handler, final String type) {
+ if (mv != null) {
+ mv.visitTryCatchBlock(start, end, handler, type);
+ }
+ }
+
+ /**
+ * Visits an annotation on an exception handler type. This method must be called <i>after</i> the
+ * {@link #visitTryCatchBlock} for the annotated exception handler. It can be called several times
+ * for the same exception handler.
+ *
+ * @param typeRef a reference to the annotated type. The sort of this type reference must be
+ * {@link TypeReference#EXCEPTION_PARAMETER}. See {@link TypeReference}.
+ * @param typePath the path to the annotated type argument, wildcard bound, array element type, or
+ * static inner type within 'typeRef'. May be {@literal null} if the annotation targets
+ * 'typeRef' as a whole.
+ * @param descriptor the class descriptor of the annotation class.
+ * @param visible {@literal true} if the annotation is visible at runtime.
+ * @return a visitor to visit the annotation values, or {@literal null} if this visitor is not
+ * interested in visiting this annotation.
+ */
+ public AnnotationVisitor visitTryCatchAnnotation(
+ final int typeRef, final TypePath typePath, final String descriptor, final boolean visible) {
+ if (api < Opcodes.ASM5) {
+ throw new UnsupportedOperationException(REQUIRES_ASM5);
+ }
+ if (mv != null) {
+ return mv.visitTryCatchAnnotation(typeRef, typePath, descriptor, visible);
+ }
+ return null;
+ }
+
+ /**
+ * Visits a local variable declaration.
+ *
+ * @param name the name of a local variable.
+ * @param descriptor the type descriptor of this local variable.
+ * @param signature the type signature of this local variable. May be {@literal null} if the local
+ * variable type does not use generic types.
+ * @param start the first instruction corresponding to the scope of this local variable
+ * (inclusive).
+ * @param end the last instruction corresponding to the scope of this local variable (exclusive).
+ * @param index the local variable's index.
+ * @throws IllegalArgumentException if one of the labels has not already been visited by this
+ * visitor (by the {@link #visitLabel} method).
+ */
+ public void visitLocalVariable(
+ final String name,
+ final String descriptor,
+ final String signature,
+ final Label start,
+ final Label end,
+ final int index) {
+ if (mv != null) {
+ mv.visitLocalVariable(name, descriptor, signature, start, end, index);
+ }
+ }
+
+ /**
+ * Visits an annotation on a local variable type.
+ *
+ * @param typeRef a reference to the annotated type. The sort of this type reference must be
+ * {@link TypeReference#LOCAL_VARIABLE} or {@link TypeReference#RESOURCE_VARIABLE}. See {@link
+ * TypeReference}.
+ * @param typePath the path to the annotated type argument, wildcard bound, array element type, or
+ * static inner type within 'typeRef'. May be {@literal null} if the annotation targets
+ * 'typeRef' as a whole.
+ * @param start the fist instructions corresponding to the continuous ranges that make the scope
+ * of this local variable (inclusive).
+ * @param end the last instructions corresponding to the continuous ranges that make the scope of
+ * this local variable (exclusive). This array must have the same size as the 'start' array.
+ * @param index the local variable's index in each range. This array must have the same size as
+ * the 'start' array.
+ * @param descriptor the class descriptor of the annotation class.
+ * @param visible {@literal true} if the annotation is visible at runtime.
+ * @return a visitor to visit the annotation values, or {@literal null} if this visitor is not
+ * interested in visiting this annotation.
+ */
+ public AnnotationVisitor visitLocalVariableAnnotation(
+ final int typeRef,
+ final TypePath typePath,
+ final Label[] start,
+ final Label[] end,
+ final int[] index,
+ final String descriptor,
+ final boolean visible) {
+ if (api < Opcodes.ASM5) {
+ throw new UnsupportedOperationException(REQUIRES_ASM5);
+ }
+ if (mv != null) {
+ return mv.visitLocalVariableAnnotation(
+ typeRef, typePath, start, end, index, descriptor, visible);
+ }
+ return null;
+ }
+
+ /**
+ * Visits a line number declaration.
+ *
+ * @param line a line number. This number refers to the source file from which the class was
+ * compiled.
+ * @param start the first instruction corresponding to this line number.
+ * @throws IllegalArgumentException if {@code start} has not already been visited by this visitor
+ * (by the {@link #visitLabel} method).
+ */
+ public void visitLineNumber(final int line, final Label start) {
+ if (mv != null) {
+ mv.visitLineNumber(line, start);
+ }
+ }
+
+ /**
+ * Visits the maximum stack size and the maximum number of local variables of the method.
+ *
+ * @param maxStack maximum stack size of the method.
+ * @param maxLocals maximum number of local variables for the method.
+ */
+ public void visitMaxs(final int maxStack, final int maxLocals) {
+ if (mv != null) {
+ mv.visitMaxs(maxStack, maxLocals);
+ }
+ }
+
+ /**
+ * Visits the end of the method. This method, which is the last one to be called, is used to
+ * inform the visitor that all the annotations and attributes of the method have been visited.
+ */
+ public void visitEnd() {
+ if (mv != null) {
+ mv.visitEnd();
+ }
+ }
}