tvl-depot/src/libexpr/common-opts.cc

32 lines
700 B
C++

#include "common-opts.hh"
#include "../libmain/shared.hh"
#include "util.hh"
#include "parser.hh"
namespace nix {
bool parseOptionArg(const string & arg, Strings::iterator & i,
const Strings::iterator & argsEnd, EvalState & state,
ATermMap & autoArgs)
{
if (arg != "--arg" && arg != "--argstr") return false;
UsageError error(format("`%1%' requires two arguments") % arg);
if (i == argsEnd) throw error;
string name = *i++;
if (i == argsEnd) throw error;
string value = *i++;
Expr e = arg == "--arg"
? parseExprFromString(state, value, absPath("."))
: makeStr(value);
autoArgs.set(toATerm(name), e);
return true;
}
}