# Copyright (c) 2022, 2022, Oracle and/or its affiliates. All rights reserved.
# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
#
# The Universal Permissive License (UPL), Version 1.0
#
# Subject to the condition set forth below, permission is hereby granted to any
# person obtaining a copy of this software, associated documentation and/or
# data (collectively the "Software"), free of charge and under any and all
# copyright rights in the Software, and any and all patent rights owned or
# freely licensable by each licensor hereunder covering either (i) the
# unmodified Software as contributed to or provided by such licensor, or (ii)
# the Larger Works (as defined below), to deal in both
#
# (a) the Software, and
#
# (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if
# one is included with the Software each a "Larger Work" to which the Software
# is contributed by such licensors),
#
# without restriction, including without limitation the rights to copy, create
# derivative works of, display, perform, and distribute the Software and make,
# use, sell, offer for sale, import, export, have made, and have sold the
# Software and the Larger Work(s), and to sublicense the foregoing rights on
# either these or other terms.
#
# This license is subject to the following condition:
#
# The above copyright notice and either this complete permission notice or at a
# minimum a reference to the UPL must be included in all copies or substantial
# portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
import os
import textwrap
from contextlib import contextmanager
from typing import Optional

HEADER = """/*
 * Copyright (c) 2019, 2022, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * The Universal Permissive License (UPL), Version 1.0
 *
 * Subject to the condition set forth below, permission is hereby granted to any
 * person obtaining a copy of this software, associated documentation and/or
 * data (collectively the "Software"), free of charge and under any and all
 * copyright rights in the Software, and any and all patent rights owned or
 * freely licensable by each licensor hereunder covering either (i) the
 * unmodified Software as contributed to or provided by such licensor, or (ii)
 * the Larger Works (as defined below), to deal in both
 *
 * (a) the Software, and
 *
 * (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if
 * one is included with the Software each a "Larger Work" to which the Software
 * is contributed by such licensors),
 *
 * without restriction, including without limitation the rights to copy, create
 * derivative works of, display, perform, and distribute the Software and make,
 * use, sell, offer for sale, import, export, have made, and have sold the
 * Software and the Larger Work(s), and to sublicense the foregoing rights on
 * either these or other terms.
 *
 * This license is subject to the following condition:
 *
 * The above copyright notice and either this complete permission notice or at a
 * minimum a reference to the UPL must be included in all copies or substantial
 * portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

// Checkstyle: stop
// JaCoCo Exclude
//@formatter:off
// Generated from Python.asdl by main_asdl_gen.py
"""


class Emitter:
    def __init__(self, file):
        self.file = file
        self.indent = 0

    def println(self, line: Optional[str] = ''):
        if not line:
            self.file.write('\n')
        else:
            assert '\n' not in line
            self.file.write('    ' * self.indent + line + '\n')

    def print_block(self, code: str):
        for line in textwrap.dedent(code).splitlines():
            self.println(line)

    @contextmanager
    def start(self, first_line: str, last_line: Optional[str] = None, indent_level: int = 1):
        self.println(first_line)
        self.indent += indent_level
        yield
        self.indent -= indent_level
        if last_line:
            self.println(last_line)

    def start_call(self, line: str):
        return self.start(line, ');', 4)

    def start_block(self, line: str):
        return self.start(line + ' {', '}')

    def define(self, line: str, *annotations: str):
        self.println()
        for a in annotations:
            self.println(a)
        return self.start_block(line)


@contextmanager
def create(out_dir_base: str, java_package: str, java_class_name: str):
    sst_dir = os.path.join(out_dir_base, *java_package.split('.'))
    os.makedirs(sst_dir, exist_ok=True)
    with open(os.path.join(sst_dir, java_class_name + '.java'), 'w') as f:
        emitter = Emitter(f)
        f.write(HEADER)
        f.write(f'package {java_package};\n')
        yield emitter
