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89 lines
1.4 KiB
Plaintext
89 lines
1.4 KiB
Plaintext
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#!/bin/sh
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# yyacc - yacc wrapper
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#
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# Allows tokens to be written as `literal` and then automatically
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# substituted with #defined tokens.
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#
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# Usage:
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# yyacc file.y filetab.h file.yy
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#
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# inputs:
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# file.yy yacc grammar with ` literals
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#
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# outputs:
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# file.y yacc grammar
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# filetab.h array of string <-> token mappings
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#
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# 03-13-93 - Documented and p moved in sed command (for some reason,
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# s/x/y/p doesn't work).
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# 10-12-93 - Take basename as second argument.
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# 12-31-96 - reversed order of args to be compatible with GenFile rule
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# 03/19/02 (seiwald) - suffix symbols with _t to avoid conflicts
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#
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outy=${1?}
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outh=${2?}
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in=${3?}
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out=`basename $in .yy`
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T=/tmp/yy$$
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trap 'rm -f $T.*' 0
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sed '
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: 1
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/`/{
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h
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s/[^`]*`\([^`]*\)`.*/\1/
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p
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g
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s/[^`]*`[^`]*`//
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b 1
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}
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d
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' $in | sort -u | sed '
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h
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y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/
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s/:/_COLON/
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s/!/_BANG/
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s/&&/_AMPERAMPER/
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s/&/_AMPER/
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s/+/_PLUS/
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s/||/_BARBAR/
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s/|/_BAR/
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s/;/_SEMIC/
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s/-/_MINUS/
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s/</_LANGLE/
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s/>/_RANGLE/
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s/\./_PERIOD/
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s/?/_QUESTION/
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s/=/_EQUALS/
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s/,/_COMMA/
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s/\[/_LBRACKET/
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s/]/_RBRACKET/
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s/{/_LBRACE/
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s/}/_RBRACE/
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s/(/_LPAREN/
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s/)/_RPAREN/
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s/.*/&_t/
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G
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s/\n/ /
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' > $T.1
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sed '
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s:^\(.*\) \(.*\)$:s/`\2`/\1/g:
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s:\.:\\.:g
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s:\[:\\[:g
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' $T.1 > $T.s
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rm -f $outy $outh
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(
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sed 's:^\(.*\) \(.*\)$:%token \1:' $T.1
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sed -f $T.s $in
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) > $outy
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(
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sed 's:^\(.*\) \(.*\)$: { "\2", \1 },:' $T.1
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) > $outh
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