#!/usr/bin/env bash

SRC_DIR=$1

if [ ! -e "$SRC_DIR/src/all.bash" ]
then
    echo "\`$SRC_DIR' is not top directory of go source code"
    exit 1
fi

pushd "$SRC_DIR"

find src -name "*.go" | \
etags --language=none \
    --regex='/type[ \t]+[^ \t]+[ \t]/' \
    --regex='/func[ \t]+[^( \t]+[( \t]/' \
    --regex='/func[ \t]+([ \t]*[^( \t]*[ \t]+\*?\([^) \t]+\)[ \t]*)[ \t]*\([^( \t]+\)[( \t]/\1.\2/' -
find src -name "*.[hc]" | etags -a -
find src -name "*.goc" | etags --language=c -a -
find src -name "*.s" | etags -a --language=none \
    --regex='/TEXT [^(]+/' -
find include -name "*.h" | etags -a -
popd