@Override
public BasicValue naryOperation(
final AbstractInsnNode insn, final List<? extends BasicValue> values)
throws AnalyzerException {
int opcode = insn.getOpcode();
if (opcode == MULTIANEWARRAY) {
return newValue(Type.getType(((MultiANewArrayInsnNode) insn).desc));
} else if (opcode == INVOKEDYNAMIC) {
return newValue(Type.getReturnType(((InvokeDynamicInsnNode) insn).desc));
} else {
return newValue(Type.getReturnType(((MethodInsnNode) insn).desc));
}
}
@Override
public BasicValue newOperation(final AbstractInsnNode insn) throws AnalyzerException {
switch (insn.getOpcode()) {
case ACONST_NULL:
return newValue(Type.getObjectType("null"));
case ICONST_M1:
case ICONST_0:
case ICONST_1:
case ICONST_2:
case ICONST_3:
case ICONST_4:
case ICONST_5:
return BasicValue.INT_VALUE;
case LCONST_0:
case LCONST_1:
return BasicValue.LONG_VALUE;
case FCONST_0:
case FCONST_1:
case FCONST_2:
return BasicValue.FLOAT_VALUE;
case DCONST_0:
case DCONST_1:
return BasicValue.DOUBLE_VALUE;
case BIPUSH:
case SIPUSH:
return BasicValue.INT_VALUE;
case LDC:
Object cst = ((LdcInsnNode) insn).cst;
if (cst instanceof Integer) {
return BasicValue.INT_VALUE;
} else if (cst instanceof Float) {
return BasicValue.FLOAT_VALUE;
} else if (cst instanceof Long) {
return BasicValue.LONG_VALUE;
} else if (cst instanceof Double) {
return BasicValue.DOUBLE_VALUE;
} else if (cst instanceof String) {
return newValue(Type.getObjectType("java/lang/String"));
} else if (cst instanceof Type) {
int sort = ((Type) cst).getSort();
if (sort == Type.OBJECT || sort == Type.ARRAY) {
return newValue(Type.getObjectType("java/lang/Class"));
} else if (sort == Type.METHOD) {
return newValue(Type.getObjectType("java/lang/invoke/MethodType"));
} else {
throw new IllegalArgumentException("Illegal LDC constant " + cst);
}
} else if (cst instanceof Handle) {
return newValue(Type.getObjectType("java/lang/invoke/MethodHandle"));
} else {
throw new IllegalArgumentException("Illegal LDC constant " + cst);
}
case JSR:
return BasicValue.RETURNADDRESS_VALUE;
case GETSTATIC:
return newValue(Type.getType(((FieldInsnNode) insn).desc));
case NEW:
return newValue(Type.getObjectType(((TypeInsnNode) insn).desc));
default:
throw new Error("Internal error.");
}
}
@Override
public BasicValue binaryOperation(
final AbstractInsnNode insn, final BasicValue value1, final BasicValue value2)
throws AnalyzerException {
switch (insn.getOpcode()) {
case IALOAD:
case BALOAD:
case CALOAD:
case SALOAD:
case IADD:
case ISUB:
case IMUL:
case IDIV:
case IREM:
case ISHL:
case ISHR:
case IUSHR:
case IAND:
case IOR:
case IXOR:
return BasicValue.INT_VALUE;
case FALOAD:
case FADD:
case FSUB:
case FMUL:
case FDIV:
case FREM:
return BasicValue.FLOAT_VALUE;
case LALOAD:
case LADD:
case LSUB:
case LMUL:
case LDIV:
case LREM:
case LSHL:
case LSHR:
case LUSHR:
case LAND:
case LOR:
case LXOR:
return BasicValue.LONG_VALUE;
case DALOAD:
case DADD:
case DSUB:
case DMUL:
case DDIV:
case DREM:
return BasicValue.DOUBLE_VALUE;
case AALOAD:
return BasicValue.REFERENCE_VALUE;
case LCMP:
case FCMPL:
case FCMPG:
case DCMPL:
case DCMPG:
return BasicValue.INT_VALUE;
case IF_ICMPEQ:
case IF_ICMPNE:
case IF_ICMPLT:
case IF_ICMPGE:
case IF_ICMPGT:
case IF_ICMPLE:
case IF_ACMPEQ:
case IF_ACMPNE:
case PUTFIELD:
return null;
default:
throw new Error("Internal error.");
}
}
@Override
public BasicValue unaryOperation(final AbstractInsnNode insn, final BasicValue value)
throws AnalyzerException {
switch (insn.getOpcode()) {
case INEG:
case IINC:
case L2I:
case F2I:
case D2I:
case I2B:
case I2C:
case I2S:
return BasicValue.INT_VALUE;
case FNEG:
case I2F:
case L2F:
case D2F:
return BasicValue.FLOAT_VALUE;
case LNEG:
case I2L:
case F2L:
case D2L:
return BasicValue.LONG_VALUE;
case DNEG:
case I2D:
case L2D:
case F2D:
return BasicValue.DOUBLE_VALUE;
case IFEQ:
case IFNE:
case IFLT:
case IFGE:
case IFGT:
case IFLE:
case TABLESWITCH:
case LOOKUPSWITCH:
case IRETURN:
case LRETURN:
case FRETURN:
case DRETURN:
case ARETURN:
case PUTSTATIC:
return null;
case GETFIELD:
return newValue(Type.getType(((FieldInsnNode) insn).desc));
case NEWARRAY:
switch (((IntInsnNode) insn).operand) {
case T_BOOLEAN:
return newValue(Type.getType("[Z"));
case T_CHAR:
return newValue(Type.getType("[C"));
case T_BYTE:
return newValue(Type.getType("[B"));
case T_SHORT:
return newValue(Type.getType("[S"));
case T_INT:
return newValue(Type.getType("[I"));
case T_FLOAT:
return newValue(Type.getType("[F"));
case T_DOUBLE:
return newValue(Type.getType("[D"));
case T_LONG:
return newValue(Type.getType("[J"));
default:
throw new AnalyzerException(insn, "Invalid array type");
}
case ANEWARRAY:
String desc = ((TypeInsnNode) insn).desc;
return newValue(Type.getType("[" + Type.getObjectType(desc)));
case ARRAYLENGTH:
return BasicValue.INT_VALUE;
case ATHROW:
return null;
case CHECKCAST:
desc = ((TypeInsnNode) insn).desc;
return newValue(Type.getObjectType(desc));
case INSTANCEOF:
return BasicValue.INT_VALUE;
case MONITORENTER:
case MONITOREXIT:
case IFNULL:
case IFNONNULL:
return null;
default:
throw new Error("Internal error.");
}
}