8c6c7de216
In order to avoid rev-lock with Clang when moving to the new API, also preserve the current API temporarily and insert a shim to implement the new API in terms of the old. llvm-svn: 165165
147 lines
4.4 KiB
C++
147 lines
4.4 KiB
C++
//===- Main.cpp - Top-Level TableGen implementation -----------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// TableGen is a tool which can be used to build up a description of something,
|
|
// then invoke one or more "tablegen backends" to emit information about the
|
|
// description in some predefined format. In practice, this is used by the LLVM
|
|
// code generators to automate generation of a code generator through a
|
|
// high-level description of the target.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "TGParser.h"
|
|
#include "llvm/ADT/OwningPtr.h"
|
|
#include "llvm/Support/CommandLine.h"
|
|
#include "llvm/Support/MemoryBuffer.h"
|
|
#include "llvm/Support/ToolOutputFile.h"
|
|
#include "llvm/Support/system_error.h"
|
|
#include "llvm/TableGen/Error.h"
|
|
#include "llvm/TableGen/Main.h"
|
|
#include "llvm/TableGen/Record.h"
|
|
#include "llvm/TableGen/TableGenAction.h"
|
|
#include <algorithm>
|
|
#include <cstdio>
|
|
using namespace llvm;
|
|
|
|
namespace {
|
|
cl::opt<std::string>
|
|
OutputFilename("o", cl::desc("Output filename"), cl::value_desc("filename"),
|
|
cl::init("-"));
|
|
|
|
cl::opt<std::string>
|
|
DependFilename("d",
|
|
cl::desc("Dependency filename"),
|
|
cl::value_desc("filename"),
|
|
cl::init(""));
|
|
|
|
cl::opt<std::string>
|
|
InputFilename(cl::Positional, cl::desc("<input file>"), cl::init("-"));
|
|
|
|
cl::list<std::string>
|
|
IncludeDirs("I", cl::desc("Directory of include files"),
|
|
cl::value_desc("directory"), cl::Prefix);
|
|
}
|
|
|
|
namespace {
|
|
// XXX: this is a crutch for transitioning to the new TableGenMain API
|
|
// (with a TableGenMainFn* instead of a pointless class).
|
|
class StubTransitionalTableGenAction : public TableGenAction {
|
|
TableGenMainFn *MainFn;
|
|
public:
|
|
StubTransitionalTableGenAction(TableGenMainFn *M) : MainFn(M) {}
|
|
bool operator()(raw_ostream &OS, RecordKeeper &Records) {
|
|
return MainFn(OS, Records);
|
|
}
|
|
};
|
|
}
|
|
|
|
namespace llvm {
|
|
|
|
int TableGenMain(char *argv0, TableGenMainFn *MainFn) {
|
|
StubTransitionalTableGenAction Action(MainFn);
|
|
return TableGenMain(argv0, Action);
|
|
}
|
|
|
|
int TableGenMain(char *argv0, TableGenAction &Action) {
|
|
RecordKeeper Records;
|
|
|
|
try {
|
|
// Parse the input file.
|
|
OwningPtr<MemoryBuffer> File;
|
|
if (error_code ec =
|
|
MemoryBuffer::getFileOrSTDIN(InputFilename.c_str(), File)) {
|
|
errs() << "Could not open input file '" << InputFilename << "': "
|
|
<< ec.message() <<"\n";
|
|
return 1;
|
|
}
|
|
MemoryBuffer *F = File.take();
|
|
|
|
// Tell SrcMgr about this buffer, which is what TGParser will pick up.
|
|
SrcMgr.AddNewSourceBuffer(F, SMLoc());
|
|
|
|
// Record the location of the include directory so that the lexer can find
|
|
// it later.
|
|
SrcMgr.setIncludeDirs(IncludeDirs);
|
|
|
|
TGParser Parser(SrcMgr, Records);
|
|
|
|
if (Parser.ParseFile())
|
|
return 1;
|
|
|
|
std::string Error;
|
|
tool_output_file Out(OutputFilename.c_str(), Error);
|
|
if (!Error.empty()) {
|
|
errs() << argv0 << ": error opening " << OutputFilename
|
|
<< ":" << Error << "\n";
|
|
return 1;
|
|
}
|
|
if (!DependFilename.empty()) {
|
|
if (OutputFilename == "-") {
|
|
errs() << argv0 << ": the option -d must be used together with -o\n";
|
|
return 1;
|
|
}
|
|
tool_output_file DepOut(DependFilename.c_str(), Error);
|
|
if (!Error.empty()) {
|
|
errs() << argv0 << ": error opening " << DependFilename
|
|
<< ":" << Error << "\n";
|
|
return 1;
|
|
}
|
|
DepOut.os() << OutputFilename << ":";
|
|
const std::vector<std::string> &Dependencies = Parser.getDependencies();
|
|
for (std::vector<std::string>::const_iterator I = Dependencies.begin(),
|
|
E = Dependencies.end();
|
|
I != E; ++I) {
|
|
DepOut.os() << " " << (*I);
|
|
}
|
|
DepOut.os() << "\n";
|
|
DepOut.keep();
|
|
}
|
|
|
|
if (Action(Out.os(), Records))
|
|
return 1;
|
|
|
|
// Declare success.
|
|
Out.keep();
|
|
return 0;
|
|
|
|
} catch (const TGError &Error) {
|
|
PrintError(Error);
|
|
} catch (const std::string &Error) {
|
|
PrintError(Error);
|
|
} catch (const char *Error) {
|
|
PrintError(Error);
|
|
} catch (...) {
|
|
errs() << argv0 << ": Unknown unexpected exception occurred.\n";
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
}
|