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annotate tests/agcl/parsifal/factor.syn @ 21:1c9dac05d040

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Add lint-style FALLTHROUGH annotations to fallthrough cases. (in the parse engine and thus the output code) Document this, because the old output causes warnings with gcc10.
author David A. Holland
date Mon, 13 Jun 2022 00:04:38 -0400
parents 13d2b8934445
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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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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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