public Assembler push(int value) {
if (value >= -1 && value <= 5) {
mv.visitInsn(ICONST_0 + value);
} else if (value >= Byte.MIN_VALUE && value <= Byte.MAX_VALUE) {
mv.visitIntInsn(BIPUSH, value);
} else if (value >= Short.MIN_VALUE && value <= Short.MAX_VALUE) {
mv.visitIntInsn(SIPUSH, value);
} else {
mv.visitLdcInsn(value);
}
return this;
}
public Assembler ldc(Object o) {
if (o instanceof Integer) {
int i = (int) o;
if (i >= -1 && i <= 5) {
int opcode = -1;
switch (i) {
case 0:
{
opcode = ICONST_0;
break;
}
case 1:
{
opcode = ICONST_1;
break;
}
case 2:
{
opcode = ICONST_2;
break;
}
case 3:
{
opcode = ICONST_3;
break;
}
case 4:
{
opcode = ICONST_4;
break;
}
case 5:
{
opcode = ICONST_5;
break;
}
case -1:
{
opcode = ICONST_M1;
break;
}
}
mv.visitInsn(opcode);
return this;
}
}
if (o instanceof Long) {
long l = (long) o;
if (l >= 0 && l <= 1) {
int opcode = -1;
switch ((int) l) {
case 0:
{
opcode = LCONST_0;
break;
}
case 1:
{
opcode = LCONST_1;
break;
}
}
mv.visitInsn(opcode);
return this;
}
}
mv.visitLdcInsn(o);
return this;
}
public Assembler println(String msg) {
mv.visitFieldInsn(GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;");
mv.visitLdcInsn(msg);
invokeVirtual("java/io/PrintStream", "println", "(Ljava/lang/String;)V");
return this;
}
public Assembler ldc(Object o) {
mv.visitLdcInsn(o);
return this;
}