/***
* ASM: a very small and fast Java bytecode manipulation framework
* Copyright (c) 2000-2007 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 com.alibaba.fastjson.asm;
/**
*
* @author Eric Bruneton
*/
public interface MethodVisitor {
// -------------------------------------------------------------------------
// Annotations and non standard attributes
// -------------------------------------------------------------------------
// -------------------------------------------------------------------------
// 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.
*/
void visitInsn(int opcode);
void visitIntInsn(int opcode, int 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.
*/
void visitVarInsn(int opcode, int 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}).
*/
void visitTypeInsn(int opcode, String 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}).
*/
void visitFieldInsn(int opcode, String owner, String name, String desc);
void visitMethodInsn(int opcode, String owner, String name, String desc);
/**
* 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.
*/
void visitJumpInsn(int opcode, Label label);
/**
* Visits a label. A label designates the instruction that will be visited just after it.
*
* @param label a {@link Label Label} object.
*/
void visitLabel(Label label);
// -------------------------------------------------------------------------
// Special instructions
// -------------------------------------------------------------------------
/**
* Visits a LDC instruction.
*
* @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} (or a {@link Type} for <tt>.class</tt>
* constants, for classes whose version is 49.0 or more).
*/
void visitLdcInsn(Object cst);
/**
* Visits an IINC instruction.
*
* @param var index of the local variable to be incremented.
* @param increment amount to increment the local variable by.
*/
void visitIincInsn(int var, int increment);
// -------------------------------------------------------------------------
// Exceptions table entries, debug information, max stack and max locals
// -------------------------------------------------------------------------
/**
* 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.
*/
void visitMaxs(int maxStack, int 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.
*/
void visitEnd();
}