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0f772932a5
* Convert bison.sh to posix shell * Refactor bison.sh to be more like CMakeLists.txt No current warnings with shellcheck.net.
31 lines
902 B
Bash
Executable File
31 lines
902 B
Bash
Executable File
#!/bin/sh
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set -eu
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OUTPUT_CPP="${1:?}"
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INPUT_Y="${2:?}"
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BISON_MAJOR=$(bison -V | sed -E 's/^.+ ([0-9]+)\..*$/\1/g;q')
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BISON_MINOR=$(bison -V | sed -E 's/^.+ [0-9]+\.([0-9]+)\..*$/\1/g;q')
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if [ "$BISON_MAJOR" -lt 3 ]; then
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echo "Bison $BISON_MAJOR.$BISON_MINOR is not supported" 1>&2
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exit 1
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fi
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BISON_FLAGS="-Wall -Dparse.lac=full -Dlr.type=ielr"
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# Set some optimization flags on versions that support them
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if [ "$BISON_MAJOR" -eq 4 ] || [ "$BISON_MAJOR" -eq 3 ] && [ "$BISON_MINOR" -ge 5 ]; then
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BISON_FLAGS="$BISON_FLAGS -Dapi.token.raw=true"
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fi
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if [ "$BISON_MAJOR" -eq 4 ] || [ "$BISON_MAJOR" -eq 3 ] && [ "$BISON_MINOR" -ge 6 ]; then
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BISON_FLAGS="$BISON_FLAGS -Dparse.error=detailed"
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else
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BISON_FLAGS="$BISON_FLAGS -Dparse.error=verbose"
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fi
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# Replace the arguments to this script ($@) with the ones in $BISON_FLAGS
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eval "set -- $BISON_FLAGS"
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exec bison "$@" -d -o "$OUTPUT_CPP" "$INPUT_Y"
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