clang  9.0.0svn
InputInfo.h
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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 
18 namespace clang {
19 namespace driver {
20 
21 /// InputInfo - Wrapper for information about an input source.
22 class 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;
43  const char *BaseInput;
44 
45  static types::ID GetActionType(const Action *A) {
46  return A != nullptr ? A->getType() : types::TY_Nothing;
47  }
48 
49 public:
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
InputInfo(types::ID _Type, const llvm::opt::Arg *_InputArg, const char *_BaseInput)
Definition: InputInfo.h:63
const llvm::opt::Arg * InputArg
Definition: InputInfo.h:38
The base class of the type hierarchy.
Definition: Type.h:1414
InputInfo(const Action *A, const char *_Filename, const char *_BaseInput)
Definition: InputInfo.h:58
const char * getFilename() const
Definition: InputInfo.h:83
const Action * getAction() const
The action for which this InputInfo was created. May be null.
Definition: InputInfo.h:80
InputInfo(const Action *A, const char *_BaseInput)
Definition: InputInfo.h:51
Action - Represent an abstract compilation step to perform.
Definition: Action.h:47
InputInfo - Wrapper for information about an input source.
Definition: InputInfo.h:22
types::ID getType() const
Definition: Action.h:140
void setAction(const Action *A)
Definition: InputInfo.h:81
types::ID getType() const
Definition: InputInfo.h:77
InputInfo(const Action *A, const llvm::opt::Arg *_InputArg, const char *_BaseInput)
Definition: InputInfo.h:68
std::string getAsString() const
getAsString - Return a string name for this input, for debugging.
Definition: InputInfo.h:94
InputInfo(types::ID _Type, const char *_Filename, const char *_BaseInput)
Definition: InputInfo.h:54
bool isInputArg() const
Definition: InputInfo.h:76
Kind
const llvm::opt::Arg & getInputArg() const
Definition: InputInfo.h:87
Dataflow Directional Tag Classes.
bool isNothing() const
Definition: InputInfo.h:74
const char * getBaseInput() const
Definition: InputInfo.h:78
bool isFilename() const
Definition: InputInfo.h:75
const char * Filename
Definition: InputInfo.h:37