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 }
124