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from source.__config__ import MRI |
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from source.__config__ import NON_MRI |
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from source.__config__ import PREUDOMSTRUCTION |
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5
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6
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def assembler(source: str, symbols_address: dict): |
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7
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lines = source.split('\n') |
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# Location Counter |
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LC = 0 |
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obj_dict = dict() |
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12
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for line in lines: |
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strings = line.split() |
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switch = len(strings) |
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word = strings[0] |
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16
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if switch == 1: |
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if word == PREUDOMSTRUCTION[3]: |
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break |
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19
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else: |
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obj_dict[LC] = hex(NON_MRI[word]) |
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elif switch == 2: |
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if word == PREUDOMSTRUCTION[0]: |
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LC = int(strings[1]) - 1 |
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else: |
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if word in MRI: |
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obj_dict[LC] = _assemble(strings, symbols_address, 0, 0) |
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elif word in PREUDOMSTRUCTION: |
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obj_dict[LC] = num_converter(word, strings[1]) |
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elif switch == 3: |
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state = True |
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31
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if word[-1] == ',': |
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a = 1 |
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33
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b = 0 |
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34
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if strings[1] in PREUDOMSTRUCTION[1:3]: |
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state = False |
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36
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else: |
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a = 0 |
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38
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b = 1 |
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39
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if state: |
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40
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obj_dict[LC] = _assemble(strings, symbols_address, a, b) |
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41
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else: |
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obj_dict[LC] = num_converter(word, strings[2]) |
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43
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elif switch == 4: |
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44
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obj_dict[LC] = _assemble(strings, symbols_address, 1, 1) |
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45
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LC += 1 |
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47
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return obj_dict |
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48
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49
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50
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def _assemble(strings: list, symbols_address: dict, index1: int, index2: int): |
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51
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three_bit_part = symbols_address[strings[index1 + 1]] |
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52
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one_bit_part = MRI[strings[index1]][index2] |
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53
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assembled = one_bit_part + three_bit_part |
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54
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return hex(int(assembled, 16)) |
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55
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56
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57
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def num_converter(word: str, number: str) -> str: |
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""" Converts string number to it's appreciate hexadecimal integer |
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59
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60
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:param word: HEX or DEC for determining with conversion method to use" |
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61
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:param number: string number to be converted to integer |
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62
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:return hexadecimal string representation of input number""" |
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63
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if word == PREUDOMSTRUCTION[1]: # word == HEX |
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64
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return hex(int(number, 16)) |
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65
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else: # word == DEC |
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66
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return hex(int(number)) |
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67
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MahdiBaghbani /
Python-Basic-Computer-Assembler
