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#
# 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,
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"""Utilities related to java_plugin and JavaPluginInfo.

kt_codegen_plugin is using this visitor to extract java_plugin information.
Due to cross plugin type processing, the plugin info search processor differs
from the way that java targets handles plugins.
"""

def _get_java_plugins(_target, ctx_rule):
    exported_plugins = getattr(ctx_rule.attr, "exported_plugins", [])
    return [
        t[JavaPluginInfo].plugins
        for t in exported_plugins
        if JavaPluginInfo in t
    ]

java_plugin_visitor = struct(
    name = "java_plugins",
    visit_target = _get_java_plugins,
    filter_edge = None,
    finish_expansion = None,
    process_unvisited_target = None,
)