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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
134 lines
4.4 KiB
C++
134 lines
4.4 KiB
C++
//===- ArgumentsAdjusters.cpp - Command line arguments adjuster -----------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains definitions of classes which implement ArgumentsAdjuster
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// interface.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Tooling/ArgumentsAdjusters.h"
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#include "clang/Basic/LLVM.h"
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#include "llvm/ADT/StringRef.h"
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#include <cstddef>
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namespace clang {
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namespace tooling {
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/// Add -fsyntax-only option to the command line arguments.
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ArgumentsAdjuster getClangSyntaxOnlyAdjuster() {
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return [](const CommandLineArguments &Args, StringRef /*unused*/) {
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CommandLineArguments AdjustedArgs;
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for (size_t i = 0, e = Args.size(); i < e; ++i) {
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StringRef Arg = Args[i];
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// FIXME: Remove options that generate output.
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if (!Arg.startswith("-fcolor-diagnostics") &&
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!Arg.startswith("-fdiagnostics-color"))
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AdjustedArgs.push_back(Args[i]);
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}
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AdjustedArgs.push_back("-fsyntax-only");
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return AdjustedArgs;
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};
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}
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ArgumentsAdjuster getClangStripOutputAdjuster() {
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return [](const CommandLineArguments &Args, StringRef /*unused*/) {
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CommandLineArguments AdjustedArgs;
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for (size_t i = 0, e = Args.size(); i < e; ++i) {
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StringRef Arg = Args[i];
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if (!Arg.startswith("-o"))
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AdjustedArgs.push_back(Args[i]);
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if (Arg == "-o") {
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// Output is specified as -o foo. Skip the next argument too.
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++i;
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}
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// Else, the output is specified as -ofoo. Just do nothing.
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}
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return AdjustedArgs;
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};
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}
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ArgumentsAdjuster getClangStripDependencyFileAdjuster() {
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return [](const CommandLineArguments &Args, StringRef /*unused*/) {
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CommandLineArguments AdjustedArgs;
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for (size_t i = 0, e = Args.size(); i < e; ++i) {
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StringRef Arg = Args[i];
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// All dependency-file options begin with -M. These include -MM,
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// -MF, -MG, -MP, -MT, -MQ, -MD, and -MMD.
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if (!Arg.startswith("-M")) {
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AdjustedArgs.push_back(Args[i]);
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continue;
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}
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if (Arg == "-MF" || Arg == "-MT" || Arg == "-MQ")
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// These flags take an argument: -MX foo. Skip the next argument also.
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++i;
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}
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return AdjustedArgs;
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};
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}
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ArgumentsAdjuster getInsertArgumentAdjuster(const CommandLineArguments &Extra,
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ArgumentInsertPosition Pos) {
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return [Extra, Pos](const CommandLineArguments &Args, StringRef /*unused*/) {
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CommandLineArguments Return(Args);
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CommandLineArguments::iterator I;
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if (Pos == ArgumentInsertPosition::END) {
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I = Return.end();
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} else {
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I = Return.begin();
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++I; // To leave the program name in place
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}
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Return.insert(I, Extra.begin(), Extra.end());
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return Return;
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};
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}
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ArgumentsAdjuster getInsertArgumentAdjuster(const char *Extra,
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ArgumentInsertPosition Pos) {
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return getInsertArgumentAdjuster(CommandLineArguments(1, Extra), Pos);
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}
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ArgumentsAdjuster combineAdjusters(ArgumentsAdjuster First,
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ArgumentsAdjuster Second) {
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if (!First)
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return Second;
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if (!Second)
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return First;
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return [First, Second](const CommandLineArguments &Args, StringRef File) {
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return Second(First(Args, File), File);
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};
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}
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ArgumentsAdjuster getStripPluginsAdjuster() {
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return [](const CommandLineArguments &Args, StringRef /*unused*/) {
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CommandLineArguments AdjustedArgs;
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for (size_t I = 0, E = Args.size(); I != E; I++) {
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// According to https://clang.llvm.org/docs/ClangPlugins.html
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// plugin arguments are in the form:
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// -Xclang {-load, -plugin, -plugin-arg-<plugin-name>, -add-plugin}
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// -Xclang <arbitrary-argument>
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if (I + 4 < E && Args[I] == "-Xclang" &&
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(Args[I + 1] == "-load" || Args[I + 1] == "-plugin" ||
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llvm::StringRef(Args[I + 1]).startswith("-plugin-arg-") ||
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Args[I + 1] == "-add-plugin") &&
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Args[I + 2] == "-Xclang") {
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I += 3;
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continue;
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}
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AdjustedArgs.push_back(Args[I]);
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}
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return AdjustedArgs;
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};
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}
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} // end namespace tooling
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} // end namespace clang
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