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annotate tests/agcl/parsifal/factor.syn @ 17:12171da8943f

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author David A. Holland
date Tue, 31 May 2022 01:56:37 -0400
parents 13d2b8934445
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13d2b8934445 Import AnaGram (near-)release tree into Mercurial.
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1 /*
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2 * AnaGram, A System for Syntax Directed Programming
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3 * Copyright 1993-2002 Parsifal Software. All Rights Reserved.
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4 * See the file COPYING for license and usage terms.
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5 */
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6
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7 factor $
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8 -> "if", '(', true logical or exp, ',',
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9 conditional exp:x, ',',
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10 skip, ')' =x;
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11
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12 factor
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13 -> "if", '(', false logical or exp, ',',
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14 skip, ',',
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15 conditional exp:y, ')' =y;
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16
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17 false logical or exp, true logical or exp
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18 -> logical or exp:c ={if (c) CHANGE_REDUCTION("true_logical_or_exp");}
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19
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20
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21 skip
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22 -> skip char...
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23
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24 skip char
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25 -> ~(eof + '(' + ')' + ',' + space)
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26 -> balanced parens
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27
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28 balanced parens
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29 -> '(', [~(eof + '(' + ')') | balanced parens]..., ')'
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30
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31 white space
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32 -> space
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33 -> comment
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34
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35 [
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36 disregard white space
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37 lexeme {skip char}
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38 ]
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