compilation_course_compiler/cpq.py

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import sly
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import sys
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# for ease of reading, the compiler is broken down to multiple files
# parser.py for the parser
# lexer.py for the lexer
# and helper.py for helper functions(such as print_err)
from lexer import Lexer
from parser import Parser
from helper import print_err
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print_err('Aviv Romem')
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if len(sys.argv) != 2 or not sys.argv[1].endswith('.ou'):
print('USAGE: python cpq.py <file-name>.ou')
exit(1)
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file = sys.argv[1]
output = file[:-3] + '.qud'
f = open(file, 'r')
text = f.read()
f.close()
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lexer = Lexer()
parser = Parser()
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file = sys.argv[1]
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parser.parse(lexer.tokenize(text))
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if not parser.had_errors:
f = open(output, 'w')
f.writelines([l + '\n' for l in parser.lines])
f.close()