forked from OSchip/llvm-project
120 lines
4.0 KiB
C++
120 lines
4.0 KiB
C++
//===-- Implementation of the main header generation class ----------------===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "Generator.h"
|
|
|
|
#include "IncludeFileCommand.h"
|
|
#include "PublicAPICommand.h"
|
|
|
|
#include "llvm/ADT/StringRef.h"
|
|
#include "llvm/Support/MemoryBuffer.h"
|
|
#include "llvm/Support/SourceMgr.h"
|
|
#include "llvm/Support/raw_ostream.h"
|
|
|
|
#include <cstdlib>
|
|
#include <memory>
|
|
|
|
static const char CommandPrefix[] = "%%";
|
|
static const size_t CommandPrefixSize = llvm::StringRef(CommandPrefix).size();
|
|
|
|
static const char CommentPrefix[] = "<!>";
|
|
|
|
static const char ParamNamePrefix[] = "${";
|
|
static const size_t ParamNamePrefixSize =
|
|
llvm::StringRef(ParamNamePrefix).size();
|
|
static const char ParamNameSuffix[] = "}";
|
|
static const size_t ParamNameSuffixSize =
|
|
llvm::StringRef(ParamNameSuffix).size();
|
|
|
|
namespace llvm_libc {
|
|
|
|
Command *Generator::getCommandHandler(llvm::StringRef CommandName) {
|
|
if (CommandName == IncludeFileCommand::Name) {
|
|
if (!IncludeFileCmd)
|
|
IncludeFileCmd = std::make_unique<IncludeFileCommand>();
|
|
return IncludeFileCmd.get();
|
|
} else if (CommandName == PublicAPICommand::Name) {
|
|
if (!PublicAPICmd)
|
|
PublicAPICmd = std::make_unique<PublicAPICommand>(EntrypointNameList);
|
|
return PublicAPICmd.get();
|
|
} else {
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
void Generator::parseCommandArgs(llvm::StringRef ArgStr, ArgVector &Args) {
|
|
if (!ArgStr.contains(',') && ArgStr.trim(' ').trim('\t').size() == 0) {
|
|
// If it is just space between the parenthesis
|
|
return;
|
|
}
|
|
|
|
ArgStr.split(Args, ",");
|
|
for (llvm::StringRef &A : Args) {
|
|
A = A.trim(' ');
|
|
if (A.startswith(ParamNamePrefix) && A.endswith(ParamNameSuffix)) {
|
|
A = A.drop_front(ParamNamePrefixSize).drop_back(ParamNameSuffixSize);
|
|
A = ArgMap[std::string(A)];
|
|
}
|
|
}
|
|
}
|
|
|
|
void Generator::generate(llvm::raw_ostream &OS, llvm::RecordKeeper &Records) {
|
|
auto DefFileBuffer = llvm::MemoryBuffer::getFile(HeaderDefFile);
|
|
if (!DefFileBuffer) {
|
|
llvm::errs() << "Unable to open " << HeaderDefFile << ".\n";
|
|
std::exit(1);
|
|
}
|
|
llvm::SourceMgr SrcMgr;
|
|
unsigned DefFileID = SrcMgr.AddNewSourceBuffer(
|
|
std::move(DefFileBuffer.get()), llvm::SMLoc::getFromPointer(nullptr));
|
|
|
|
llvm::StringRef Content = SrcMgr.getMemoryBuffer(DefFileID)->getBuffer();
|
|
while (true) {
|
|
std::pair<llvm::StringRef, llvm::StringRef> P = Content.split('\n');
|
|
Content = P.second;
|
|
|
|
llvm::StringRef Line = P.first.trim(' ');
|
|
if (Line.startswith(CommandPrefix)) {
|
|
Line = Line.drop_front(CommandPrefixSize);
|
|
|
|
P = Line.split("(");
|
|
if (P.second.empty() || P.second[P.second.size() - 1] != ')') {
|
|
SrcMgr.PrintMessage(llvm::SMLoc::getFromPointer(P.second.data()),
|
|
llvm::SourceMgr::DK_Error,
|
|
"Command argument list should begin with '(' "
|
|
"and end with ')'.");
|
|
std::exit(1);
|
|
}
|
|
llvm::StringRef CommandName = P.first;
|
|
Command *Cmd = getCommandHandler(CommandName);
|
|
if (Cmd == nullptr) {
|
|
SrcMgr.PrintMessage(llvm::SMLoc::getFromPointer(CommandName.data()),
|
|
llvm::SourceMgr::DK_Error,
|
|
"Unknown command '%%" + CommandName + "'.");
|
|
std::exit(1);
|
|
}
|
|
|
|
llvm::StringRef ArgStr = P.second.drop_back(1);
|
|
ArgVector Args;
|
|
parseCommandArgs(ArgStr, Args);
|
|
|
|
Command::ErrorReporter Reporter(
|
|
llvm::SMLoc::getFromPointer(CommandName.data()), SrcMgr);
|
|
Cmd->run(OS, Args, StdHeader, Records, Reporter);
|
|
} else if (!Line.startswith(CommentPrefix)) {
|
|
// There is no comment or command on this line so we just write it as is.
|
|
OS << P.first << "\n";
|
|
}
|
|
|
|
if (P.second.empty())
|
|
break;
|
|
}
|
|
}
|
|
|
|
} // namespace llvm_libc
|