llvm/lib/Option/Arg.cpp

   1 //===- Arg.cpp - Argument Implementations ---------------------------------===//
   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 #include "llvm/ADT/SmallString.h"
  10 #include "llvm/Config/llvm-config.h"
  11 #include "llvm/Option/Arg.h"
  12 #include "llvm/Option/ArgList.h"
  13 #include "llvm/Option/Option.h"
  14 #include "llvm/Support/Compiler.h"
  15 #include "llvm/Support/Debug.h"
  16 #include "llvm/Support/raw_ostream.h"
  17
  18 using namespace llvm;
  19 using namespace llvm::opt;
  20
  21 Arg::Arg(const Option Opt, StringRef S, unsigned Index, const Arg *BaseArg)
  22     : Opt(Opt), BaseArg(BaseArg), Spelling(S), Index(Index), Claimed(false),
  23       IgnoredTargetSpecific(false), OwnsValues(false) {}
  24
  25 Arg::Arg(const Option Opt, StringRef S, unsigned Index, const char *Value0,
  26          const Arg *BaseArg)
  27     : Opt(Opt), BaseArg(BaseArg), Spelling(S), Index(Index), Claimed(false),
  28       IgnoredTargetSpecific(false), OwnsValues(false) {
  29   Values.push_back(Value0);
  30 }
  31
  32 Arg::Arg(const Option Opt, StringRef S, unsigned Index, const char *Value0,
  33          const char *Value1, const Arg *BaseArg)
  34     : Opt(Opt), BaseArg(BaseArg), Spelling(S), Index(Index), Claimed(false),
  35       IgnoredTargetSpecific(false), OwnsValues(false) {
  36   Values.push_back(Value0);
  37   Values.push_back(Value1);
  38 }
  39
  40 Arg::~Arg() {
  41   if (OwnsValues) {
  42     for (unsigned i = 0, e = Values.size(); i != e; ++i)
  43       delete[] Values[i];
  44   }
  45 }
  46
  47 void Arg::print(raw_ostream& O) const {
  48   O << "<Opt:";
  49   Opt.print(O, /*AddNewLine=*/false);
  50
  51   O << " Index:" << Index;
  52
  53   O << " Values: [";
  54   for (unsigned i = 0, e = Values.size(); i != e; ++i) {
  55     if (i) O << ", ";
  56     O << "'" << Values[i] << "'";
  57   }
  58
  59   O << "]>\n";
  60 }
  61
  62 #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
  63 LLVM_DUMP_METHOD void Arg::dump() const { print(dbgs()); }
  64 #endif
  65
  66 std::string Arg::getAsString(const ArgList &Args) const {
  67   if (Alias)
  68     return Alias->getAsString(Args);
  69
  70   SmallString<256> Res;
  71   raw_svector_ostream OS(Res);
  72
  73   ArgStringList ASL;
  74   render(Args, ASL);
  75   for (ArgStringList::iterator
  76          it = ASL.begin(), ie = ASL.end(); it != ie; ++it) {
  77     if (it != ASL.begin())
  78       OS << ' ';
  79     OS << *it;
  80   }
  81
  82   return std::string(OS.str());
  83 }
  84
  85 void Arg::renderAsInput(const ArgList &Args, ArgStringList &Output) const {
  86   if (!getOption().hasNoOptAsInput()) {
  87     render(Args, Output);
  88     return;
  89   }
  90
  91   Output.append(Values.begin(), Values.end());
  92 }
  93
  94 void Arg::render(const ArgList &Args, ArgStringList &Output) const {
  95   switch (getOption().getRenderStyle()) {
  96   case Option::RenderValuesStyle:
  97     Output.append(Values.begin(), Values.end());
  98     break;
  99
 100   case Option::RenderCommaJoinedStyle: {
 101     SmallString<256> Res;
 102     raw_svector_ostream OS(Res);
 103     OS << getSpelling();
 104     for (unsigned i = 0, e = getNumValues(); i != e; ++i) {
 105       if (i) OS << ',';
 106       OS << getValue(i);
 107     }
 108     Output.push_back(Args.MakeArgString(OS.str()));
 109     break;
 110   }
 111
 112  case Option::RenderJoinedStyle:
 113     Output.push_back(Args.GetOrMakeJoinedArgString(
 114                        getIndex(), getSpelling(), getValue(0)));
 115     Output.append(Values.begin() + 1, Values.end());
 116     break;
 117
 118   case Option::RenderSeparateStyle:
 119     Output.push_back(Args.MakeArgString(getSpelling()));
 120     Output.append(Values.begin(), Values.end());
 121     break;
 122   }
 123 }