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# Copyright 1999-2021 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
# @ECLASS: tree-sitter-grammar.eclass
# @MAINTAINER:
# Matthew Smith <matt@offtopica.uk>
# Nick Sarnie <sarnex@gentoo.org>
# @AUTHOR:
# Matthew Smith <matt@offtopica.uk>
# @SUPPORTED_EAPIS: 8
# @BLURB: Common functions and variables for Tree Sitter grammars
if [[ -z ${_TREE_SITTER_GRAMMAR_ECLASS} ]]; then
_TREE_SITTER_GRAMMAR_ECLASS=1
case ${EAPI} in
8) ;;
*) die "EAPI=${EAPI:-0} is not supported" ;;
esac
inherit multilib toolchain-funcs
SRC_URI="https://github.com/tree-sitter/${PN}/archive/${TS_PV:-v${PV}}.tar.gz
-> ${P}.tar.gz"
S="${WORKDIR}"/${PN}-${TS_PV:-${PV}}/src
# Needed for tree_sitter/parser.h
DEPEND="dev-libs/tree-sitter"
EXPORT_FUNCTIONS src_compile src_install
# @ECLASS-VARIABLE: TS_PV
# @PRE_INHERIT
# @DEFAULT_UNSET
# @DESCRIPTION:
# Used to override upstream tag name if tagged differently, e.g. most releases
# are v${PV} but some are tagged as rust-${PV}.
# @FUNCTION: _get_tsg_abi_ver
# @INTERNAL
# @DESCRIPTION:
# This internal function determines the ABI version of a grammar library based
# on a constant in the source file.
_get_tsg_abi_ver() {
# This sed script finds ABI definition string in parser source file,
# substitutes all the string until the ABI number, and prints remains
# (the ABI number itself)
sed -n 's/#define LANGUAGE_VERSION //p' "${S}"/parser.c ||
die "Unable to extract ABI version for this grammar"
}
# @FUNCTION: tree-sitter-grammar_src_compile
# @DESCRIPTION:
# Compiles the Tree Sitter parser as a shared library.
tree-sitter-grammar_src_compile() {
debug-print-function ${FUNCNAME} "${@}"
# Grammars always contain parser.c, and sometimes a scanner.c,
# or scanner.cc.
tc-export CC CXX
export CFLAGS="${CFLAGS} -fPIC"
export CXXFLAGS="${CXXFLAGS} -fPIC"
local objects=( parser.o )
if [[ -f "${S}"/scanner.c || -f "${S}"/scanner.cc ]]; then
objects+=( scanner.o )
fi
emake "${objects[@]}"
local link="$(tc-getCC) ${CFLAGS}"
if [[ -f "${S}/scanner.cc" ]]; then
link="$(tc-getCXX) ${CXXFLAGS}"
fi
local soname=lib${PN}$(get_libname $(_get_tsg_abi_ver))
${link} ${LDFLAGS} \
-shared \
*.o \
-Wl,--soname=${soname} \
-o "${WORKDIR}"/${soname} || die
}
# @FUNCTION: tree-sitter-grammar_src_install
# @DESCRIPTION:
# Installs the Tree Sitter parser library.
tree-sitter-grammar_src_install() {
debug-print-function ${FUNCNAME} "${@}"
local soname=lib${PN}$(get_libname $(_get_tsg_abi_ver))
dolib.so "${WORKDIR}/${soname}"
dosym "${soname}" \
/usr/$(get_libdir)/lib${PN}$(get_libname)
}
fi
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