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@ -49,6 +49,8 @@ def tokenize(text): |
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tokens.append(buffer) |
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buffer = "" |
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tokens.append(char) |
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if buffer != "": |
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tokens.append(buffer) |
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return tokens |
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def arbre(tokens): #-> Expression |
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@ -59,7 +61,7 @@ def arbre(tokens): #-> Expression |
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##Brackets loop |
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i = 0 |
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while i != len(tokens): |
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while i < len(tokens): |
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if tokens[i] == "(": |
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j = i + 1 |
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innerBrackets = 1 |
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@ -72,24 +74,54 @@ def arbre(tokens): #-> Expression |
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innerTokens.append(tokens[j]) |
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j += 1 |
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exp = arbre(innerTokens) |
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tokens = tokens[:i] + [" "] + tokens[j+1:] |
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#i -= j+1 |
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if waiting_for_after_exp != None: |
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waiting_for_after_exp.droite == exp |
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waiting_for_after_exp.droite = exp |
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waiting_before_exp = waiting_for_after_exp |
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waiting_for_after_exp = None |
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else: |
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waiting_before_exp = exp |
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elif tokens[i] == "*": |
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exp = Expression("*") |
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if Token.isNumber(tokens[i-1]): |
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exp.gauche == tokens[i-1] |
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exp.gauche = tokens[i-1] |
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if Token.isNumber(tokens[i+1]): |
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exp.droite = tokens[i+1] |
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if Token.isNumber(tokens[i-1]) and Token.isNumber(tokens[i+1]): |
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return exp |
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if tokens[i-1] == ")": |
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exp.gauche = waiting_before_exp |
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waiting_before_exp = None |
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elif tokens[i+1] == "(": |
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waiting_for_after_exp = exp |
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print(exp) |
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elif tokens[i-1] == " ": |
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exp.gauche = waiting_before_exp |
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waiting_for_after_exp = exp |
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else: |
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raise Exception() |
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elif tokens[i] == "+": |
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exp = Expression("+") |
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if Token.isNumber(tokens[i-1]): |
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exp.gauche = tokens[i-1] |
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if Token.isNumber(tokens[i+1]): |
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exp.droite == tokens[i+1] |
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exp.droite = tokens[i+1] |
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if Token.isNumber(tokens[i-1]) and Token.isNumber(tokens[i+1]): |
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return exp |
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if tokens[i-1] == ")": |
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exp.gauche == waiting_before_exp |
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exp.gauche = waiting_before_exp |
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waiting_before_exp = None |
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elif tokens[i+1] == "(": |
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waiting_for_after_exp = exp |
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print(exp) |
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elif tokens[i-1] == " ": |
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exp.gauche = waiting_before_exp |
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waiting_for_after_exp = exp |
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else: |
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raise Exception() |
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@ -115,4 +147,4 @@ def arbre(tokens): #-> Expression |
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if __name__ == "__main__": |
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print(arbre(tokenize("4*(7*4)"))) |
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print(arbre(tokenize("(2*8)*4+(7*4)*7"))) |
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