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@echo off
rem dobison.cmd prefix mode target source
rem prefix - passed to bison as -p<prefix>
rem mode - either debug or release
rem target - generated parser file name without extension
rem source - input to bison
if "%2"=="debug" (set flags=-tvdo) else (set flags=-vdo)
rem Test for presence of bison.
bison --help >NUL
if errorlevel 1 goto nobison
rem Run bison.
bison -p%1 %flags%%3.cpp %4 && move %3.hpp %3.h
exit
:nobison
echo Bison not found. Using pre-generated files.
copy %~pn4.cpp %3.cpp
copy %~pn4.h %3.h
exit
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