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37 lines
1.7 KiB
37 lines
1.7 KiB
import re
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from slither.exceptions import SlitherException
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from ..utils.patches import create_patch
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def format(slither, patches, elements):
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for element in elements:
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if element['type'] != "function":
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# Skip variable elements
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continue
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target_contract = slither.get_contract_from_name(element['type_specific_fields']['parent']['name'])
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if target_contract:
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for function in target_contract.functions:
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if function.name == element['name']:
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_patch(slither, patches,
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element['source_mapping']['filename_absolute'],
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element['source_mapping']['filename_relative'],
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int(function.parameters_src.source_mapping['start']),
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int(function.returns_src.source_mapping['start']))
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break
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def _patch(slither, patches, in_file, in_file_relative, modify_loc_start, modify_loc_end):
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in_file_str = slither.source_code[in_file].encode('utf-8')
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old_str_of_interest = in_file_str[modify_loc_start:modify_loc_end]
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# Find the keywords view|pure|constant and remove them
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m = re.search("(view|pure|constant)", old_str_of_interest.decode('utf-8'))
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if m:
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create_patch(patches,
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"constant-function",
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in_file_relative,
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in_file,
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modify_loc_start + m.span()[0],
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modify_loc_start + m.span()[1],
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m.groups(0)[0], # this is view|pure|constant
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"")
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else:
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raise SlitherException("No view/pure/constant specifier exists. Regex failed to remove specifier!")
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