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import os |
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import struct |
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5
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def source_reader(path: str) -> str: |
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""" Reads source code |
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:param path: string pointing to source code file location |
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:return: source code |
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""" |
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if not os.path.isfile(path): |
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raise FileNotFoundError |
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else: |
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with open(path, 'r') as file: |
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source = file.read() |
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return source |
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def output_writer(path: str, header: list, object_dict: dict, mode: str): |
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""" Writes compiled program |
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:param path: output file path |
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:param header: a list containing order of writing |
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:param object_dict: dictionary containing bytes |
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:param mode: switch between binary writing ('b') or textual writing ('t') |
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""" |
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if mode == 'b': |
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with open(path, 'wb+') as output: |
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for memory_location in header: |
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output.write(object_dict[memory_location]) |
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elif mode == 't': |
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with open(path, 'w+') as output: |
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for memory_location in header: |
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integer = struct.unpack('>i', object_dict[memory_location]) |
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integer = integer[0] |
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output.write(dec2bin(integer, 16) + '\n') |
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40
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def dec2bin(decimal, bits) -> str: |
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""" Converts a decimal number to it's 2nd complement binary representation |
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:param decimal: decimal to be converted |
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:param bits: number of bits for binary representation |
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:return: string containing binary representation of decimal number |
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""" |
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binary = bin(decimal & int("1" * bits, 2))[2:] |
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return ("{0:0>%s}" % bits).format(binary) |
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MahdiBaghbani /
Python-Basic-Computer-Assembler
