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94
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1 from .errors import CompilerException
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2 import struct
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3
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4 def bits(f):
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5 while True:
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6 Byte = f.read(1)
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7 for i in range(8):
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8 yield Byte & 0x1
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9 Byte >>= 1
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10
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11 class BitReader:
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12 def __init__(self, f):
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13 self.stream = bits(f)
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14 self.curword = None
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15 def parseModule(self):
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16 if self.read(8) != ord('B') or self.read(8) != ord('C'):
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17 raise CompilerException('Invalid bitcode signature')
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18 for bitsig in [0x0, 0xC, 0xE, 0xD]:
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19 if self.read(4) != bitsig:
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20 raise CompilerException('Invalid bitcode signature')
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21
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22 def read(self, numbits):
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23 if numbits == 8:
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24 b = self.stream.read(1)
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25 print(b)
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26 return int(b[0])
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27 return 2
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28
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