1//===--- InputInfo.h - Input Source & Type Information ----------*- C++ -*-===// 2// 3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4// See https://llvm.org/LICENSE.txt for license information. 5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6// 7//===----------------------------------------------------------------------===// 8 9#ifndef LLVM_CLANG_LIB_DRIVER_INPUTINFO_H 10#define LLVM_CLANG_LIB_DRIVER_INPUTINFO_H 11 12#include "clang/Driver/Action.h" 13#include "clang/Driver/Types.h" 14#include "llvm/Option/Arg.h" 15#include <cassert> 16#include <string> 17 18namespace clang { 19namespace driver { 20 21/// InputInfo - Wrapper for information about an input source. 22class InputInfo { 23 // FIXME: The distinction between filenames and inputarg here is 24 // gross; we should probably drop the idea of a "linker 25 // input". Doing so means tweaking pipelining to still create link 26 // steps when it sees linker inputs (but not treat them as 27 // arguments), and making sure that arguments get rendered 28 // correctly. 29 enum Class { 30 Nothing, 31 Filename, 32 InputArg, 33 Pipe 34 }; 35 36 union { 37 const char *Filename; 38 const llvm::opt::Arg *InputArg; 39 } Data; 40 Class Kind; 41 const Action* Act; 42 types::ID Type; 43 const char *BaseInput; 44 45 static types::ID GetActionType(const Action *A) { 46 return A != nullptr ? A->getType() : types::TY_Nothing; 47 } 48 49public: 50 InputInfo() : InputInfo(nullptr, nullptr) {} 51 InputInfo(const Action *A, const char *_BaseInput) 52 : Kind(Nothing), Act(A), Type(GetActionType(A)), BaseInput(_BaseInput) {} 53 54 InputInfo(types::ID _Type, const char *_Filename, const char *_BaseInput) 55 : Kind(Filename), Act(nullptr), Type(_Type), BaseInput(_BaseInput) { 56 Data.Filename = _Filename; 57 } 58 InputInfo(const Action *A, const char *_Filename, const char *_BaseInput) 59 : Kind(Filename), Act(A), Type(GetActionType(A)), BaseInput(_BaseInput) { 60 Data.Filename = _Filename; 61 } 62 63 InputInfo(types::ID _Type, const llvm::opt::Arg *_InputArg, 64 const char *_BaseInput) 65 : Kind(InputArg), Act(nullptr), Type(_Type), BaseInput(_BaseInput) { 66 Data.InputArg = _InputArg; 67 } 68 InputInfo(const Action *A, const llvm::opt::Arg *_InputArg, 69 const char *_BaseInput) 70 : Kind(InputArg), Act(A), Type(GetActionType(A)), BaseInput(_BaseInput) { 71 Data.InputArg = _InputArg; 72 } 73 74 bool isNothing() const { return Kind == Nothing; } 75 bool isFilename() const { return Kind == Filename; } 76 bool isInputArg() const { return Kind == InputArg; } 77 types::ID getType() const { return Type; } 78 const char *getBaseInput() const { return BaseInput; } 79 /// The action for which this InputInfo was created. May be null. 80 const Action *getAction() const { return Act; } 81 void setAction(const Action *A) { Act = A; } 82 83 const char *getFilename() const { 84 assert(isFilename() && "Invalid accessor."); 85 return Data.Filename; 86 } 87 const llvm::opt::Arg &getInputArg() const { 88 assert(isInputArg() && "Invalid accessor."); 89 return *Data.InputArg; 90 } 91 92 /// getAsString - Return a string name for this input, for 93 /// debugging. 94 std::string getAsString() const { 95 if (isFilename()) 96 return std::string("\"") + getFilename() + '"'; 97 else if (isInputArg()) 98 return "(input arg)"; 99 else 100 return "(nothing)"; 101 } 102}; 103 104} // end namespace driver 105} // end namespace clang 106 107#endif 108