io.ebean.enhance.asm.tree.analysis

Class SimpleVerifier

java.lang.Object

io.ebean.enhance.asm.tree.analysis.Interpreter<BasicValue>

io.ebean.enhance.asm.tree.analysis.BasicInterpreter

io.ebean.enhance.asm.tree.analysis.BasicVerifier

io.ebean.enhance.asm.tree.analysis.SimpleVerifier

All Implemented Interfaces:

Opcodes

public class SimpleVerifier
extends BasicVerifier

An extended BasicVerifier that performs more precise verifications. This verifier computes exact class types, instead of using a single "object reference" type (as done in the BasicVerifier).

Author:

Eric Bruneton, Bing Ran

Field Summary

Fields inherited from interface io.ebean.enhance.asm.Opcodes

AALOAD, AASTORE, ACC_ABSTRACT, ACC_ANNOTATION, ACC_BRIDGE, ACC_DEPRECATED, ACC_ENUM, ACC_FINAL, ACC_INTERFACE, ACC_MANDATED, ACC_MODULE, ACC_NATIVE, ACC_OPEN, ACC_PRIVATE, ACC_PROTECTED, ACC_PUBLIC, ACC_STATIC, ACC_STATIC_PHASE, ACC_STRICT, ACC_SUPER, ACC_SYNCHRONIZED, ACC_SYNTHETIC, ACC_TRANSIENT, ACC_TRANSITIVE, ACC_VARARGS, ACC_VOLATILE, ACONST_NULL, ALOAD, ANEWARRAY, ARETURN, ARRAYLENGTH, ASM4, ASM5, ASM6, 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, H_GETFIELD, H_GETSTATIC, H_INVOKEINTERFACE, H_INVOKESPECIAL, H_INVOKESTATIC, H_INVOKEVIRTUAL, H_NEWINVOKESPECIAL, H_PUTFIELD, H_PUTSTATIC, 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, INVOKEDYNAMIC, 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, V1_7, V1_8, V9

Constructor Summary

Constructors

Constructor and Description
SimpleVerifier() Constructs a new SimpleVerifier.
SimpleVerifier(Type currentClass, Type currentSuperClass, boolean isInterface) Constructs a new SimpleVerifier to verify a specific class.
SimpleVerifier(Type currentClass, Type currentSuperClass, List<Type> currentClassInterfaces, boolean isInterface) Constructs a new SimpleVerifier to verify a specific class.

Method Summary

Modifier and Type	Method and Description
BasicValue	merge(BasicValue v, BasicValue w) Merges two values.
BasicValue	newValue(Type type) Creates a new value that represents the given type.
void	setClassLoader(ClassLoader loader) Set the ClassLoader which will be used to load referenced classes.

Methods inherited from class io.ebean.enhance.asm.tree.analysis.BasicVerifier

binaryOperation, copyOperation, naryOperation, returnOperation, ternaryOperation, unaryOperation

Methods inherited from class io.ebean.enhance.asm.tree.analysis.BasicInterpreter

newOperation

Methods inherited from class java.lang.Object

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

Constructor Detail

SimpleVerifier

public SimpleVerifier()

Constructs a new SimpleVerifier.

SimpleVerifier

public SimpleVerifier(Type currentClass,
                      Type currentSuperClass,
                      boolean isInterface)

Constructs a new SimpleVerifier to verify a specific class. This class will not be loaded into the JVM since it may be incorrect.

Parameters:

currentClass - the class that is verified.

currentSuperClass - the super class of the class that is verified.

isInterface - if the class that is verified is an interface.

SimpleVerifier

public SimpleVerifier(Type currentClass,
                      Type currentSuperClass,
                      List<Type> currentClassInterfaces,
                      boolean isInterface)

Constructs a new SimpleVerifier to verify a specific class. This class will not be loaded into the JVM since it may be incorrect.

Parameters:

currentClass - the class that is verified.

currentSuperClass - the super class of the class that is verified.

currentClassInterfaces - the interfaces implemented by the class that is verified.

isInterface - if the class that is verified is an interface.

Method Detail

setClassLoader

public void setClassLoader(ClassLoader loader)

Set the ClassLoader which will be used to load referenced classes. This is useful if you are verifying multiple interdependent classes.

Parameters:

loader - a ClassLoader to use

newValue

public BasicValue newValue(Type type)

Description copied from class: Interpreter

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.

Overrides:

newValue in class BasicInterpreter

Parameters:

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

Returns:

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

merge

public BasicValue merge(BasicValue v,
                        BasicValue w)

Description copied from class: Interpreter

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).

Overrides:

merge in class BasicInterpreter

Parameters:

v - a value.

w - another value.

Returns:

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