com.facebook.buck.cxx.toolchain.WindowsPreprocessor.java Source code

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Here is the source code for com.facebook.buck.cxx.toolchain.WindowsPreprocessor.java

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/*
 * Copyright 2015-present Facebook, Inc.
 *
 * 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.facebook.buck.cxx.toolchain;

import com.facebook.buck.core.toolchain.tool.DelegatingTool;
import com.facebook.buck.core.toolchain.tool.Tool;
import com.google.common.collect.Iterables;
import java.nio.file.Path;

/** Preprocessor implementation for the Windows toolchain. */
public class WindowsPreprocessor extends DelegatingTool implements Preprocessor {
    public WindowsPreprocessor(Tool tool) {
        super(tool);
    }

    @Override
    public boolean supportsHeaderMaps() {
        return false;
    }

    @Override
    public boolean supportsPrecompiledHeaders() {
        // TODO(steveo) Should be easy to add support; will try @ later time,
        // when I can test w/ Windows.
        // https://msdn.microsoft.com/en-us/library/z0atkd6c.aspx
        return false;
    }

    private static String prependIncludeFlag(String includeRoot) {
        return "/I" + includeRoot;
    }

    @Override
    public Iterable<String> localIncludeArgs(Iterable<String> includeRoots) {
        return Iterables.transform(includeRoots, WindowsPreprocessor::prependIncludeFlag);
    }

    @Override
    public Iterable<String> systemIncludeArgs(Iterable<String> includeRoots) {
        return Iterables.transform(includeRoots, WindowsPreprocessor::prependIncludeFlag);
    }

    @Override
    public Iterable<String> quoteIncludeArgs(Iterable<String> includeRoots) {
        return Iterables.transform(includeRoots, WindowsPreprocessor::prependIncludeFlag);
    }

    @Override
    public Iterable<String> prefixHeaderArgs(Path prefixHeader) {
        throw new UnsupportedOperationException("prefix header not supported by " + getClass());
        // TODO(steveo) Should be easy to add support; will try @ later time,
        // when I can test w/ Windows.
        // "Forced Include": https://msdn.microsoft.com/en-us/library/8c5ztk84.aspx
        // Space is allowed between flag and its pathname argument.
        // E.g. something like this (space allowed between flag and its argument):
        // return ImmutableList.of("/FI", resolver.getAbsolutePath(prefixHeader).toString());
    }

    @Override
    public Iterable<String> precompiledHeaderArgs(Path pchOutputPath) {
        throw new UnsupportedOperationException("precompiled header not supported by " + getClass());
        // TODO(steveo) Should be easy to add support; will try @ later time,
        // when I can test w/ Windows.
        // https://msdn.microsoft.com/en-us/library/z0atkd6c.aspx
        // E.g. something like this flag (no space between "/Yu" and its argument):
        // return ImmutableList.of("/Yu" + pchOutputPath);
    }
}