1# Copyright 2019 The Bazel Authors. All rights reserved. 2# 3# Licensed under the Apache License, Version 2.0 (the "License"); 4# you may not use this file except in compliance with the License. 5# You may obtain a copy of the License at 6# 7# http://www.apache.org/licenses/LICENSE-2.0 8# 9# Unless required by applicable law or agreed to in writing, software 10# distributed under the License is distributed on an "AS IS" BASIS, 11# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12# See the License for the specific language governing permissions and 13# limitations under the License. 14 15""" 16Finds the Java toolchain. 17 18Returns the toolchain if enabled, and falls back to a toolchain constructed from 19legacy toolchain selection. 20""" 21 22def find_java_toolchain(ctx, target): 23 """ 24 Finds the Java toolchain. 25 26 If the Java toolchain is in use, returns it. Otherwise, returns a Java 27 toolchain derived from legacy toolchain selection. 28 29 Args: 30 ctx: The rule context for which to find a toolchain. 31 target: A java_toolchain target (for legacy toolchain resolution). 32 33 Returns: 34 A JavaToolchainInfo. 35 """ 36 37 _ignore = [ctx] # buildifier: disable=unused-variable 38 39 return target[java_common.JavaToolchainInfo] 40 41def find_java_runtime_toolchain(ctx, target): 42 """ 43 Finds the Java runtime. 44 45 If the Java toolchain is in use, returns it. Otherwise, returns a Java 46 runtime derived from legacy toolchain selection. 47 48 Args: 49 ctx: The rule context for which to find a toolchain. 50 target: A java_runtime target (for legacy toolchain resolution). 51 52 Returns: 53 A JavaRuntimeInfo. 54 """ 55 56 _ignore = [ctx] # buildifier: disable=unused-variable 57 58 return target[java_common.JavaRuntimeInfo] 59