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//===--- ArgList.cpp - Argument List Management -------------------------*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "clang/Driver/ArgList.h"
#include "clang/Driver/Arg.h"
#include "clang/Driver/Option.h"
using namespace clang::driver;
ArgList::ArgList(const char **ArgBegin, const char **ArgEnd) {
ArgStrings.append(ArgBegin, ArgEnd);
}
ArgList::~ArgList() {
for (iterator it = begin(), ie = end(); it != ie; ++it)
delete *it;
}
void ArgList::append(Arg *A) {
if (A->getOption().isUnsupported()) {
assert(0 && "FIXME: unsupported unsupported.");
}
Args.push_back(A);
}
Arg *ArgList::getLastArg(options::ID Id, bool Claim) const {
// FIXME: Make search efficient?
// FIXME: This needs to not require loading of the option.
for (const_iterator it = begin(), ie = end(); it != ie; ++it) {
if ((*it)->getOption().matches(Id)) {
if (Claim) (*it)->claim();
return *it;
}
}
return 0;
}
Arg *ArgList::getLastArg(options::ID Id0, options::ID Id1, bool Claim) const {
Arg *Res, *A0 = getLastArg(Id0, false), *A1 = getLastArg(Id1, false);
if (A0 && A1)
Res = A0->getIndex() > A1->getIndex() ? A0 : A1;
else
Res = A0 ? A0 : A1;
if (Claim && Res)
Res->claim();
return Res;
}
unsigned ArgList::MakeIndex(const char *String0) const {
unsigned Index = ArgStrings.size();
// Tuck away so we have a reliable const char *.
SynthesizedStrings.push_back(String0);
ArgStrings.push_back(SynthesizedStrings.back().c_str());
return Index;
}
unsigned ArgList::MakeIndex(const char *String0, const char *String1) const {
unsigned Index0 = MakeIndex(String0);
unsigned Index1 = MakeIndex(String1);
assert(Index0 + 1 == Index1 && "Unexpected non-consecutive indices!");
(void) Index1;
return Index0;
}
const char *ArgList::MakeArgString(const char *Str) const {
return getArgString(MakeIndex(Str));
}
Arg *ArgList::MakeFlagArg(const Option *Opt) const {
return new FlagArg(Opt, MakeIndex(Opt->getName()));
}
Arg *ArgList::MakePositionalArg(const Option *Opt, const char *Value) const {
return new PositionalArg(Opt, MakeIndex(Value));
}
Arg *ArgList::MakeSeparateArg(const Option *Opt, const char *Value) const {
return new SeparateArg(Opt, MakeIndex(Opt->getName(), Value), 1);
}
Arg *ArgList::MakeJoinedArg(const Option *Opt, const char *Value) const {
std::string Joined(Opt->getName());
Joined += Value;
return new JoinedArg(Opt, MakeIndex(Joined.c_str()));
}
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