| // Copyright 2020 The Bazel Authors. All rights reserved. |
| // |
| // 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. |
| |
| package com.google.devtools.build.lib.rules.apple; |
| |
| import com.google.common.annotations.VisibleForTesting; |
| import com.google.common.collect.ImmutableList; |
| import com.google.common.collect.Maps; |
| import com.google.devtools.build.lib.rules.apple.AppleCommandLineOptions.AppleBitcodeMode; |
| import com.google.devtools.common.options.Converter; |
| import com.google.devtools.common.options.OptionsParsingException; |
| import java.util.List; |
| import java.util.Map; |
| |
| /** |
| * Converts the {@code --apple_bitcode} command line option to a pair containing an optional |
| * platform type and the bitcode mode to apply to builds targeting that platform. |
| */ |
| public final class AppleBitcodeConverter |
| extends Converter.Contextless<List<Map.Entry<ApplePlatform.PlatformType, AppleBitcodeMode>>> { |
| /** Used to convert Bitcode mode strings to their enum value. */ |
| private static final AppleBitcodeMode.Converter MODE_CONVERTER = new AppleBitcodeMode.Converter(); |
| |
| /** Used to convert Apple platform type strings to their enum value. */ |
| private static final AppleCommandLineOptions.PlatformTypeConverter PLATFORM_TYPE_CONVERTER = |
| new AppleCommandLineOptions.PlatformTypeConverter(); |
| |
| private static final String TYPE_DESCRIPTION = |
| String.format( |
| "'mode' or 'platform=mode', where 'mode' is %s, and 'platform' is %s", |
| MODE_CONVERTER.getTypeDescription(), PLATFORM_TYPE_CONVERTER.getTypeDescription()); |
| |
| @VisibleForTesting |
| public static final String INVALID_APPLE_BITCODE_OPTION_FORMAT = |
| "Apple Bitcode mode must be in the form " + TYPE_DESCRIPTION; |
| |
| @Override |
| public ImmutableList<Map.Entry<ApplePlatform.PlatformType, AppleBitcodeMode>> convert( |
| String input) throws OptionsParsingException { |
| ApplePlatform.PlatformType platformType; |
| AppleBitcodeMode mode; |
| |
| int pos = input.indexOf('='); |
| if (pos < 0) { |
| // If there was no '=', then parse it as a Bitcode mode and apply it to all platforms (by |
| // using a null key in the entry). |
| platformType = null; |
| mode = convertAppleBitcodeMode(input); |
| } else { |
| // If there was a '=', then parse the platform type from the left side, the Bitcode mode from |
| // the right side, and apply it to just that platform. |
| String platformTypeName = input.substring(0, pos); |
| String modeName = input.substring(pos + 1); |
| |
| platformType = convertPlatformType(platformTypeName); |
| mode = convertAppleBitcodeMode(modeName); |
| } |
| |
| return ImmutableList.of(Maps.immutableEntry(platformType, mode)); |
| } |
| |
| @Override |
| public String getTypeDescription() { |
| return TYPE_DESCRIPTION; |
| } |
| |
| /** |
| * Returns the {@code AppleBitcodeMode} value that is equivalent to the given string. |
| * |
| * @throws OptionsParsingException if the string was not a valid Apple Bitcode mode |
| */ |
| private static AppleBitcodeMode convertAppleBitcodeMode(String input) |
| throws OptionsParsingException { |
| try { |
| return MODE_CONVERTER.convert(input, /*conversionContext=*/ null); |
| } catch (OptionsParsingException e) { |
| throw new OptionsParsingException(INVALID_APPLE_BITCODE_OPTION_FORMAT, e); |
| } |
| } |
| |
| /** |
| * Returns the {@code ApplePlatform.PlatformType} value that is equivalent to the given string. |
| * |
| * @throws OptionsParsingException if any of the strings was not a valid Apple platform type |
| */ |
| private static ApplePlatform.PlatformType convertPlatformType(String input) |
| throws OptionsParsingException { |
| try { |
| return PLATFORM_TYPE_CONVERTER.convert(input, /*conversionContext=*/ null); |
| } catch (OptionsParsingException e) { |
| throw new OptionsParsingException(INVALID_APPLE_BITCODE_OPTION_FORMAT, e); |
| } |
| } |
| } |