Check in LLVM r95781.
diff --git a/lib/Driver/InputInfo.h b/lib/Driver/InputInfo.h
new file mode 100644
index 0000000..c657bef
--- /dev/null
+++ b/lib/Driver/InputInfo.h
@@ -0,0 +1,101 @@
+//===--- 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 CLANG_LIB_DRIVER_INPUTINFO_H_
+#define CLANG_LIB_DRIVER_INPUTINFO_H_
+
+#include "clang/Driver/Types.h"
+
+#include <cassert>
+#include <string>
+
+namespace clang {
+namespace driver {
+ class PipedJob;
+
+/// 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 Arg *InputArg;
+ PipedJob *Pipe;
+ } Data;
+ Class Kind;
+ types::ID Type;
+ const char *BaseInput;
+
+public:
+ InputInfo() {}
+ InputInfo(types::ID _Type, const char *_BaseInput)
+ : Kind(Nothing), Type(_Type), BaseInput(_BaseInput) {
+ }
+ InputInfo(const char *_Filename, types::ID _Type, const char *_BaseInput)
+ : Kind(Filename), Type(_Type), BaseInput(_BaseInput) {
+ Data.Filename = _Filename;
+ }
+ InputInfo(const Arg *_InputArg, types::ID _Type, const char *_BaseInput)
+ : Kind(InputArg), Type(_Type), BaseInput(_BaseInput) {
+ Data.InputArg = _InputArg;
+ }
+ InputInfo(PipedJob *_Pipe, types::ID _Type, const char *_BaseInput)
+ : Kind(Pipe), Type(_Type), BaseInput(_BaseInput) {
+ Data.Pipe = _Pipe;
+ }
+
+ bool isNothing() const { return Kind == Nothing; }
+ bool isFilename() const { return Kind == Filename; }
+ bool isInputArg() const { return Kind == InputArg; }
+ bool isPipe() const { return Kind == Pipe; }
+ types::ID getType() const { return Type; }
+ const char *getBaseInput() const { return BaseInput; }
+
+ const char *getFilename() const {
+ assert(isFilename() && "Invalid accessor.");
+ return Data.Filename;
+ }
+ const Arg &getInputArg() const {
+ assert(isInputArg() && "Invalid accessor.");
+ return *Data.InputArg;
+ }
+ PipedJob &getPipe() const {
+ assert(isPipe() && "Invalid accessor.");
+ return *Data.Pipe;
+ }
+
+ /// getAsString - Return a string name for this input, for
+ /// debugging.
+ std::string getAsString() const {
+ if (isPipe())
+ return "(pipe)";
+ else if (isFilename())
+ return std::string("\"") + getFilename() + '"';
+ else if (isInputArg())
+ return "(input arg)";
+ else
+ return "(nothing)";
+ }
+};
+
+} // end namespace driver
+} // end namespace clang
+
+#endif