forked from lix-project/lix
41c45a9b31
a pointer to a Value, rather than the Value directly. This improves the effectiveness of garbage collection a lot: if the Value is stored inside the set directly, then any live pointer to the Value causes all other attributes in the set to be live as well.
36 lines
776 B
C++
36 lines
776 B
C++
#include "common-opts.hh"
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#include "../libmain/shared.hh"
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#include "util.hh"
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#include "parser.hh"
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namespace nix {
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bool parseOptionArg(const string & arg, Strings::iterator & i,
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const Strings::iterator & argsEnd, EvalState & state,
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Bindings & autoArgs)
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{
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if (arg != "--arg" && arg != "--argstr") return false;
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UsageError error(format("`%1%' requires two arguments") % arg);
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if (i == argsEnd) throw error;
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string name = *i++;
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if (i == argsEnd) throw error;
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string value = *i++;
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Value * v = state.allocValue();
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autoArgs[state.symbols.create(name)].value = v;
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if (arg == "--arg")
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state.mkThunk_(*v, parseExprFromString(state, value, absPath(".")));
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else
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mkString(*v, value);
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return true;
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}
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}
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