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//===--- InputInfo.h - Input Source & Type Information ----------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_LIB_DRIVER_INPUTINFO_H
#define LLVM_CLANG_LIB_DRIVER_INPUTINFO_H
#include "clang/Driver/Action.h"
#include "clang/Driver/Types.h"
#include "llvm/Option/Arg.h"
#include <cassert>
#include <string>
namespace clang {
namespace driver {
/// InputInfo - Wrapper for information about an input source.
class InputInfo {
// FIXME: The distinction between filenames and inputarg here is
// gross; we should probably drop the idea of a "linker
// input". Doing so means tweaking pipelining to still create link
// steps when it sees linker inputs (but not treat them as
// arguments), and making sure that arguments get rendered
// correctly.
enum Class {
Nothing,
Filename,
InputArg,
Pipe
};
union {
const char *Filename;
const llvm::opt::Arg *InputArg;
} Data;
Class Kind;
const Action* Act;
types::ID Type;
const char *BaseInput;
static types::ID GetActionType(const Action *A) {
return A != nullptr ? A->getType() : types::TY_Nothing;
}
public:
InputInfo() : InputInfo(nullptr, nullptr) {}
InputInfo(const Action *A, const char *_BaseInput)
: Kind(Nothing), Act(A), Type(GetActionType(A)), BaseInput(_BaseInput) {}
InputInfo(types::ID _Type, const char *_Filename, const char *_BaseInput)
: Kind(Filename), Act(nullptr), Type(_Type), BaseInput(_BaseInput) {
Data.Filename = _Filename;
}
InputInfo(const Action *A, const char *_Filename, const char *_BaseInput)
: Kind(Filename), Act(A), Type(GetActionType(A)), BaseInput(_BaseInput) {
Data.Filename = _Filename;
}
InputInfo(types::ID _Type, const llvm::opt::Arg *_InputArg,
const char *_BaseInput)
: Kind(InputArg), Act(nullptr), Type(_Type), BaseInput(_BaseInput) {
Data.InputArg = _InputArg;
}
InputInfo(const Action *A, const llvm::opt::Arg *_InputArg,
const char *_BaseInput)
: Kind(InputArg), Act(A), Type(GetActionType(A)), BaseInput(_BaseInput) {
Data.InputArg = _InputArg;
}
bool isNothing() const { return Kind == Nothing; }
bool isFilename() const { return Kind == Filename; }
bool isInputArg() const { return Kind == InputArg; }
types::ID getType() const { return Type; }
const char *getBaseInput() const { return BaseInput; }
/// The action for which this InputInfo was created. May be null.
const Action *getAction() const { return Act; }
void setAction(const Action *A) { Act = A; }
const char *getFilename() const {
assert(isFilename() && "Invalid accessor.");
return Data.Filename;
}
const llvm::opt::Arg &getInputArg() const {
assert(isInputArg() && "Invalid accessor.");
return *Data.InputArg;
}
/// getAsString - Return a string name for this input, for
/// debugging.
std::string getAsString() const {
if (isFilename())
return std::string("\"") + getFilename() + '"';
else if (isInputArg())
return "(input arg)";
else
return "(nothing)";
}
};
} // end namespace driver
} // end namespace clang
#endif
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