31 lines
581 B
Plaintext
31 lines
581 B
Plaintext
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Package jholtrop.gvsu.cs675.bottomup;
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Tokens
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blank = (' ' | 9 | 10 | 13);
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number = ['0' .. '9']+ ('.' ['0' .. '9']+)?;
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plus = '+';
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minus = '-';
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multiply = '*';
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divide = '/';
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l_par = '(';
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r_par = ')';
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Ignored Tokens
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blank;
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Productions
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expr =
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{addition} expr plus term |
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{subtraction} expr minus term |
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{term} term;
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term =
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{multiplication} term multiply factor |
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{division} term divide factor |
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{factor} factor;
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factor =
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{number} number |
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{paren} l_par expr r_par;
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