org.objectweb.asm.tree.analysis
类 BasicInterpreter

java.lang.Object
  org.objectweb.asm.tree.analysis.BasicInterpreter

所有已实现的接口：

Opcodes, Interpreter

直接已知子类：

BasicVerifier

public class BasicInterpreter
extends Object
implements Opcodes, Interpreter

An Interpreter for BasicValue values.

作者：

Eric Bruneton, Bing Ran

字段摘要

从接口 org.objectweb.asm.Opcodes 继承的字段

AALOAD, AASTORE, ACC_ABSTRACT, ACC_ANNOTATION, ACC_BRIDGE, ACC_DEPRECATED, ACC_ENUM, ACC_FINAL, ACC_INTERFACE, ACC_NATIVE, ACC_PRIVATE, ACC_PROTECTED, ACC_PUBLIC, ACC_STATIC, ACC_STRICT, ACC_SUPER, ACC_SYNCHRONIZED, ACC_SYNTHETIC, ACC_TRANSIENT, ACC_VARARGS, ACC_VOLATILE, ACONST_NULL, ALOAD, ANEWARRAY, ARETURN, ARRAYLENGTH, ASTORE, ATHROW, BALOAD, BASTORE, BIPUSH, CALOAD, CASTORE, CHECKCAST, D2F, D2I, D2L, DADD, DALOAD, DASTORE, DCMPG, DCMPL, DCONST_0, DCONST_1, DDIV, DLOAD, DMUL, DNEG, DOUBLE, DREM, DRETURN, DSTORE, DSUB, DUP, DUP_X1, DUP_X2, DUP2, DUP2_X1, DUP2_X2, F_APPEND, F_CHOP, F_FULL, F_NEW, F_SAME, F_SAME1, F2D, F2I, F2L, FADD, FALOAD, FASTORE, FCMPG, FCMPL, FCONST_0, FCONST_1, FCONST_2, FDIV, FLOAD, FLOAT, FMUL, FNEG, FREM, FRETURN, FSTORE, FSUB, GETFIELD, GETSTATIC, GOTO, I2B, I2C, I2D, I2F, I2L, I2S, IADD, IALOAD, IAND, IASTORE, ICONST_0, ICONST_1, ICONST_2, ICONST_3, ICONST_4, ICONST_5, ICONST_M1, IDIV, IF_ACMPEQ, IF_ACMPNE, IF_ICMPEQ, IF_ICMPGE, IF_ICMPGT, IF_ICMPLE, IF_ICMPLT, IF_ICMPNE, IFEQ, IFGE, IFGT, IFLE, IFLT, IFNE, IFNONNULL, IFNULL, IINC, ILOAD, IMUL, INEG, INSTANCEOF, INTEGER, INVOKEINTERFACE, INVOKESPECIAL, INVOKESTATIC, INVOKEVIRTUAL, IOR, IREM, IRETURN, ISHL, ISHR, ISTORE, ISUB, IUSHR, IXOR, JSR, L2D, L2F, L2I, LADD, LALOAD, LAND, LASTORE, LCMP, LCONST_0, LCONST_1, LDC, LDIV, LLOAD, LMUL, LNEG, LONG, LOOKUPSWITCH, LOR, LREM, LRETURN, LSHL, LSHR, LSTORE, LSUB, LUSHR, LXOR, MONITORENTER, MONITOREXIT, MULTIANEWARRAY, NEW, NEWARRAY, NOP, NULL, POP, POP2, PUTFIELD, PUTSTATIC, RET, RETURN, SALOAD, SASTORE, SIPUSH, SWAP, T_BOOLEAN, T_BYTE, T_CHAR, T_DOUBLE, T_FLOAT, T_INT, T_LONG, T_SHORT, TABLESWITCH, TOP, UNINITIALIZED_THIS, V1_1, V1_2, V1_3, V1_4, V1_5, V1_6

构造方法摘要

BasicInterpreter()

方法摘要

Value	binaryOperation(AbstractInsnNode insn, Value value1, Value value2) Interprets a bytecode instruction with two arguments.
Value	copyOperation(AbstractInsnNode insn, Value value) Interprets a bytecode instruction that moves a value on the stack or to or from local variables.
Value	merge(Value v, Value w) Merges two values.
Value	naryOperation(AbstractInsnNode insn, List values) Interprets a bytecode instruction with a variable number of arguments.
Value	newOperation(AbstractInsnNode insn) Interprets a bytecode instruction without arguments.
Value	newValue(Type type) Creates a new value that represents the given type.
Value	ternaryOperation(AbstractInsnNode insn, Value value1, Value value2, Value value3) Interprets a bytecode instruction with three arguments.
Value	unaryOperation(AbstractInsnNode insn, Value value) Interprets a bytecode instruction with a single argument.

从类 java.lang.Object 继承的方法

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

构造方法详细信息

BasicInterpreter

public BasicInterpreter()

方法详细信息

newValue

public Value newValue(Type type)

从接口 Interpreter 复制的描述

Creates a new value that represents the given type. Called for method parameters (including this), exception handler variable and with null type for variables reserved by long and double types.

指定者：

接口 Interpreter 中的 newValue

参数：

type - a primitive or reference type, or null to represent an uninitialized value.

返回：

a value that represents the given type. The size of the returned value must be equal to the size of the given type.

newOperation

public Value newOperation(AbstractInsnNode insn)

从接口 Interpreter 复制的描述

Interprets a bytecode instruction without arguments. This method is called for the following opcodes: 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, BIPUSH, SIPUSH, LDC, JSR, GETSTATIC, NEW

指定者：

接口 Interpreter 中的 newOperation

参数：

insn - the bytecode instruction to be interpreted.

返回：

the result of the interpretation of the given instruction.

copyOperation

public Value copyOperation(AbstractInsnNode insn,
                           Value value)
                    throws AnalyzerException

从接口 Interpreter 复制的描述

Interprets a bytecode instruction that moves a value on the stack or to or from local variables. This method is called for the following opcodes: ILOAD, LLOAD, FLOAD, DLOAD, ALOAD, ISTORE, LSTORE, FSTORE, DSTORE, ASTORE, DUP, DUP_X1, DUP_X2, DUP2, DUP2_X1, DUP2_X2, SWAP

指定者：

接口 Interpreter 中的 copyOperation

参数：

insn - the bytecode instruction to be interpreted.

value - the value that must be moved by the instruction.

返回：

the result of the interpretation of the given instruction. The returned value must be equal to the given value.

抛出：

AnalyzerException - if an error occured during the interpretation.

unaryOperation

public Value unaryOperation(AbstractInsnNode insn,
                            Value value)
                     throws AnalyzerException

从接口 Interpreter 复制的描述

Interprets a bytecode instruction with a single argument. This method is called for the following opcodes: INEG, LNEG, FNEG, DNEG, IINC, I2L, I2F, I2D, L2I, L2F, L2D, F2I, F2L, F2D, D2I, D2L, D2F, I2B, I2C, I2S, IFEQ, IFNE, IFLT, IFGE, IFGT, IFLE, TABLESWITCH, LOOKUPSWITCH, IRETURN, LRETURN, FRETURN, DRETURN, ARETURN, PUTSTATIC, GETFIELD, NEWARRAY, ANEWARRAY, ARRAYLENGTH, ATHROW, CHECKCAST, INSTANCEOF, MONITORENTER, MONITOREXIT, IFNULL, IFNONNULL

指定者：

接口 Interpreter 中的 unaryOperation

参数：

insn - the bytecode instruction to be interpreted.

value - the argument of the instruction to be interpreted.

返回：

the result of the interpretation of the given instruction.

抛出：

AnalyzerException - if an error occured during the interpretation.

binaryOperation

public Value binaryOperation(AbstractInsnNode insn,
                             Value value1,
                             Value value2)
                      throws AnalyzerException

从接口 Interpreter 复制的描述

Interprets a bytecode instruction with two arguments. This method is called for the following opcodes: IALOAD, LALOAD, FALOAD, DALOAD, AALOAD, BALOAD, CALOAD, SALOAD, IADD, LADD, FADD, DADD, ISUB, LSUB, FSUB, DSUB, IMUL, LMUL, FMUL, DMUL, IDIV, LDIV, FDIV, DDIV, IREM, LREM, FREM, DREM, ISHL, LSHL, ISHR, LSHR, IUSHR, LUSHR, IAND, LAND, IOR, LOR, IXOR, LXOR, LCMP, FCMPL, FCMPG, DCMPL, DCMPG, IF_ICMPEQ, IF_ICMPNE, IF_ICMPLT, IF_ICMPGE, IF_ICMPGT, IF_ICMPLE, IF_ACMPEQ, IF_ACMPNE, PUTFIELD

指定者：

接口 Interpreter 中的 binaryOperation

参数：

insn - the bytecode instruction to be interpreted.

value1 - the first argument of the instruction to be interpreted.

value2 - the second argument of the instruction to be interpreted.

返回：

the result of the interpretation of the given instruction.

抛出：

AnalyzerException - if an error occured during the interpretation.

ternaryOperation

public Value ternaryOperation(AbstractInsnNode insn,
                              Value value1,
                              Value value2,
                              Value value3)
                       throws AnalyzerException

从接口 Interpreter 复制的描述

Interprets a bytecode instruction with three arguments. This method is called for the following opcodes: IASTORE, LASTORE, FASTORE, DASTORE, AASTORE, BASTORE, CASTORE, SASTORE

指定者：

接口 Interpreter 中的 ternaryOperation

参数：

insn - the bytecode instruction to be interpreted.

value1 - the first argument of the instruction to be interpreted.

value2 - the second argument of the instruction to be interpreted.

value3 - the third argument of the instruction to be interpreted.

返回：

the result of the interpretation of the given instruction.

抛出：

AnalyzerException - if an error occured during the interpretation.

naryOperation

public Value naryOperation(AbstractInsnNode insn,
                           List values)
                    throws AnalyzerException

从接口 Interpreter 复制的描述

Interprets a bytecode instruction with a variable number of arguments. This method is called for the following opcodes: INVOKEVIRTUAL, INVOKESPECIAL, INVOKESTATIC, INVOKEINTERFACE, MULTIANEWARRAY

指定者：

接口 Interpreter 中的 naryOperation

参数：

insn - the bytecode instruction to be interpreted.

values - the arguments of the instruction to be interpreted.

返回：

the result of the interpretation of the given instruction.

抛出：

AnalyzerException - if an error occured during the interpretation.

merge

public Value merge(Value v,
                   Value w)

从接口 Interpreter 复制的描述

Merges two values. The merge operation must return a value that represents both values (for instance, if the two values are two types, the merged value must be a common super type of the two types. If the two values are integer intervals, the merged value must be an interval that contains the previous ones. Likewise for other types of values).

指定者：

接口 Interpreter 中的 merge

参数：

v - a value.

w - another value.

返回：

the merged value. If the merged value is equal to v, this method must return v.