#!/bin/bash -e
# Copyright 2020 The Verible Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

usage() {
  cat <<EOF
$0 verilog file...

Extracts Kythe facts from the given verilog file and run Kythe web ui to visualize code navigation.
EOF
}

set -o pipefail
BROWSE_PORT="${BROWSE_PORT:-8080}"
KYTHE_BINDIR="/opt/kythe/tools"
KYTHE_OUT="./kythe-out"
# You can find prebuilt binaries at https://github.com/kythe/kythe/releases.
# This script assumes that they are installed to /opt/kythe.
# If you build the tools yourself or install them to a different location,
# make sure to pass the correct public_resources directory to http_server.
rm -f -- ${KYTHE_OUT}/graphstore/* ${KYTHE_OUT}/tables/*
mkdir -p ${KYTHE_OUT}/graphstore ${KYTHE_OUT}/tables
bazel build //verilog/tools/kythe:all

for i in "$@"; do
  # Read JSON entries from standard in to a graphstore.
  bazel-bin/verilog/tools/kythe/verible-verilog-kythe-extractor "$i"  --printkythefacts > ${KYTHE_OUT}/entries
  # Write entry stream into a GraphStore
  ${KYTHE_BINDIR}/entrystream --read_format=json < ${KYTHE_OUT}/entries \
  | ${KYTHE_BINDIR}/write_entries -graphstore ${KYTHE_OUT}/graphstore
done

# Convert the graphstore to serving tables.
${KYTHE_BINDIR}/write_tables -graphstore ${KYTHE_OUT}/graphstore -out=${KYTHE_OUT}/tables
# Host the browser UI.
${KYTHE_BINDIR}/http_server -serving_table ${KYTHE_OUT}/tables \
  -public_resources="/opt/kythe/web/ui" \
  -listen="localhost:${BROWSE_PORT}"  # ":${BROWSE_PORT}" allows access from other machines