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comparison python/target.py @ 280:02385f62f250

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Rework from str interface to Instruction interface
author Windel Bouwman
date Sat, 02 Nov 2013 10:03:26 +0100
parents 046017431c6a
children
comparison
equal deleted inserted replaced
279:2ccd57b1d78c 280:02385f62f250
55 return cls(vop.number) 55 return cls(vop.number)
56 56
57 57
58 class LabelRef: 58 class LabelRef:
59 def __init__(self, name): 59 def __init__(self, name):
60 assert type(name) is str
60 self.name = name 61 self.name = name
61 62
62 @classmethod 63 @classmethod
63 def Create(cls, vop): 64 def Create(cls, vop):
64 if type(vop) is ASymbol: 65 if type(vop) is ASymbol:
68 def encode(self): 69 def encode(self):
69 raise NotImplementedError('Instruction {0} has no encode yet, TODO'.format(type(self))) 70 raise NotImplementedError('Instruction {0} has no encode yet, TODO'.format(type(self)))
70 def resolve(self, f): 71 def resolve(self, f):
71 pass 72 pass
72 73
74
75 class Nop(Instruction):
76 """ Instruction that does nothing and has zero size """
77 def encode(self):
78 return bytes()
79
80
73 81
74 class PseudoInstruction(Instruction): 82 class PseudoInstruction(Instruction):
75 pass 83 pass
76 84
77 85