def bipush(value):
if value == -1:
return u1(0x2) # iconst_m1
elif value == 0:
return u1(0x3) # iconst_0
elif value == 1:
return u1(0x4) # iconst_1
elif value == 2:
return u1(0x5) # iconst_2
else:
return u1(0x10) + s1(value)
def aload(idx):
if idx == 0:
return u1(0x2A) # aload_0
elif idx == 1:
return u1(0x2B) # aload_1
elif idx == 2:
return u1(0x2C) # aload_2
elif idx == 3:
return u1(0x2D) # aload_3
else:
return u1(0x19) + u1(idx)
def goto_w(offset):
return u1(0xC8) + s4(offset)
def invokestatic(ref):
return u1(0xB8) + u2(ref)
def invokevirtual(method):
return u1(0xB6) + u2(method)
def name_and_type(name_index, descriptor_index):
return u1(id_NameAndType) \
+ u2(name_index) \
+ u2(descriptor_index)
def field_ref(class_index, name_and_type_index):
return u1(id_Fieldref) \
+ u2(class_index) \
+ u2(name_and_type_index)
def class_ref(name_index):
return u1(id_Class) \
+ u2(name_index)
def i2l():
return u1(0x85)
def putstatic(ref):
return u1(0xB3) + u2(ref)
def putfield(ref):
return u1(0xB5) + u2(ref)
def imul():
return u1(0x68)
def iadd():
return u1(0x60)
def swap():
return u1(0x5F)
def voidreturn():
return u1(0xB1)
def ifeq(offset):
return u1(0x99) + s2(offset)
def nop():
return u1(0)
def getfield(ref):
return u1(0xB4) + u2(ref)
def lcmp():
return u1(0x94)
def i2c():
return u1(0x92)
def method_ref(class_index, name_and_type_index):
return u1(id_Methodref) \
+ u2(class_index) \
+ u2(name_and_type_index)
def getstatic(field_index):
return u1(0xB2) + u2(field_index)
def utf8(text):
return u1(id_Utf8) \
+ u2(len(text)) \
+ str_to_byte(text)
def aaload():
return u1(0x32)
def string(utf8str):
return u1(id_String) \
+ u2(utf8str)
def ldc(const_index):
return u1(0x12) + u1(const_index)