/usr/include/llvm-3.5/llvm/Option/Arg.h is in llvm-3.5-dev 1:3.5~svn201651-1ubuntu1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 | //===--- Arg.h - Parsed Argument Classes ------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
///
/// \file
/// \brief Defines the llvm::Arg class for parsed arguments.
///
//===----------------------------------------------------------------------===//
#ifndef LLVM_OPTION_ARG_H
#define LLVM_OPTION_ARG_H
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/Option/Option.h"
#include <string>
namespace llvm {
namespace opt {
class ArgList;
/// \brief A concrete instance of a particular driver option.
///
/// The Arg class encodes just enough information to be able to
/// derive the argument values efficiently. In addition, Arg
/// instances have an intrusive double linked list which is used by
/// ArgList to provide efficient iteration over all instances of a
/// particular option.
class Arg {
Arg(const Arg &) LLVM_DELETED_FUNCTION;
void operator=(const Arg &) LLVM_DELETED_FUNCTION;
private:
/// \brief The option this argument is an instance of.
const Option Opt;
/// \brief The argument this argument was derived from (during tool chain
/// argument translation), if any.
const Arg *BaseArg;
/// \brief How this instance of the option was spelled.
StringRef Spelling;
/// \brief The index at which this argument appears in the containing
/// ArgList.
unsigned Index;
/// \brief Was this argument used to effect compilation?
///
/// This is used for generating "argument unused" diagnostics.
mutable unsigned Claimed : 1;
/// \brief Does this argument own its values?
mutable unsigned OwnsValues : 1;
/// \brief The argument values, as C strings.
SmallVector<const char *, 2> Values;
public:
Arg(const Option Opt, StringRef Spelling, unsigned Index,
const Arg *BaseArg = 0);
Arg(const Option Opt, StringRef Spelling, unsigned Index,
const char *Value0, const Arg *BaseArg = 0);
Arg(const Option Opt, StringRef Spelling, unsigned Index,
const char *Value0, const char *Value1, const Arg *BaseArg = 0);
~Arg();
const Option getOption() const { return Opt; }
StringRef getSpelling() const { return Spelling; }
unsigned getIndex() const { return Index; }
/// \brief Return the base argument which generated this arg.
///
/// This is either the argument itself or the argument it was
/// derived from during tool chain specific argument translation.
const Arg &getBaseArg() const {
return BaseArg ? *BaseArg : *this;
}
void setBaseArg(const Arg *_BaseArg) {
BaseArg = _BaseArg;
}
bool getOwnsValues() const { return OwnsValues; }
void setOwnsValues(bool Value) const { OwnsValues = Value; }
bool isClaimed() const { return getBaseArg().Claimed; }
/// \brief Set the Arg claimed bit.
void claim() const { getBaseArg().Claimed = true; }
unsigned getNumValues() const { return Values.size(); }
const char *getValue(unsigned N = 0) const {
return Values[N];
}
SmallVectorImpl<const char*> &getValues() {
return Values;
}
bool containsValue(StringRef Value) const {
for (unsigned i = 0, e = getNumValues(); i != e; ++i)
if (Values[i] == Value)
return true;
return false;
}
/// \brief Append the argument onto the given array as strings.
void render(const ArgList &Args, ArgStringList &Output) const;
/// \brief Append the argument, render as an input, onto the given
/// array as strings.
///
/// The distinction is that some options only render their values
/// when rendered as a input (e.g., Xlinker).
void renderAsInput(const ArgList &Args, ArgStringList &Output) const;
void dump() const;
/// \brief Return a formatted version of the argument and
/// its values, for debugging and diagnostics.
std::string getAsString(const ArgList &Args) const;
};
} // end namespace opt
} // end namespace llvm
#endif
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