forked from OSchip/llvm-project
97 lines
3.3 KiB
C++
97 lines
3.3 KiB
C++
//===-- cpp11-migrate/Cpp11Migrate.cpp - Main file C++11 migration tool ---===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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///
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/// \file
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/// \brief This file implements the C++11 feature migration tool main function
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/// and transformation framework.
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///
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/// Usage:
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/// cpp11-migrate [-p <build-path>] <file1> <file2> ... [-- [compiler-options]]
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///
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/// Where <build-path> is a CMake build directory containing a file named
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/// compile_commands.json which provides compiler options for building each
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/// sourc file. If <build-path> is not provided the compile_commands.json file
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/// is searched for through all parent directories.
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///
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/// Alternatively, one can provide compile options to be applied to every source
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/// file after the optional '--'.
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///
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/// <file1>... specify the paths of files in the CMake source tree, with the
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/// same requirements as other tools built on LibTooling.
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///
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//===----------------------------------------------------------------------===//
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#include "clang/Frontend/FrontendActions.h"
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#include "clang/Tooling/CommonOptionsParser.h"
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#include "clang/Tooling/Tooling.h"
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#include "Transforms.h"
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#include "Transform.h"
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namespace cl = llvm::cl;
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using namespace clang::tooling;
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static cl::opt<RiskLevel>
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MaxRiskLevel("risk", cl::desc("Select a maximum risk level:"),
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cl::values(
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clEnumValN(RL_Safe, "safe", "Only safe transformations"),
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clEnumValN(RL_Reasonable, "reasonable",
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"Enable transformations that might change "
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"semantics (default)"),
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clEnumValN(RL_Risky, "risky",
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"Enable transformations that are likely to "
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"change semantics"),
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clEnumValEnd),
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cl::init(RL_Reasonable));
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int main(int argc, const char **argv) {
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Transforms TransformManager;
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TransformManager.createTransformOpts();
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// This causes options to be parsed.
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CommonOptionsParser OptionsParser(argc, argv);
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TransformManager.createSelectedTransforms();
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if (TransformManager.begin() == TransformManager.end()) {
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llvm::errs() << "No selected transforms\n";
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return 1;
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}
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// Initial syntax check.
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ClangTool SyntaxTool(OptionsParser.getCompilations(),
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OptionsParser.getSourcePathList());
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// First, let's check to make sure there were no errors.
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if (SyntaxTool.run(newFrontendActionFactory<clang::SyntaxOnlyAction>()) !=
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0) {
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return 1;
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}
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// Apply transforms.
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for (Transforms::const_iterator I = TransformManager.begin(),
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E = TransformManager.end(); I != E; ++I) {
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if ((*I)->apply(MaxRiskLevel, OptionsParser.getCompilations(),
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OptionsParser.getSourcePathList()) != 0) {
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return 1;
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}
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}
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// Final Syntax check.
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ClangTool EndSyntaxTool(OptionsParser.getCompilations(),
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OptionsParser.getSourcePathList());
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if (EndSyntaxTool.run(
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newFrontendActionFactory<clang::SyntaxOnlyAction>()) != 0) {
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// FIXME: Revert changes made to files that fail the syntax test.
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return 1;
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}
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return 0;
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}
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