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#ifndef __GET_DRVS_H
#define __GET_DRVS_H
#include "eval.hh"
#include <string>
#include <map>
#include <boost/shared_ptr.hpp>
namespace nix {
struct MetaValue
{
enum { tpNone, tpString, tpStrings, tpInt } type;
string stringValue;
Strings stringValues;
int intValue;
};
typedef std::map<string, MetaValue> MetaInfo;
struct DrvInfo
{
private:
string drvPath;
string outPath;
bool metaInfoRead;
MetaInfo meta;
public:
string name;
string attrPath; /* path towards the derivation */
string system;
/* !!! make this private */
Bindings * attrs;
DrvInfo() : metaInfoRead(false), attrs(0) { };
string queryDrvPath(EvalState & state) const;
string queryOutPath(EvalState & state) const;
MetaInfo queryMetaInfo(EvalState & state) const;
MetaValue queryMetaInfo(EvalState & state, const string & name) const;
void setDrvPath(const string & s)
{
drvPath = s;
}
void setOutPath(const string & s)
{
outPath = s;
}
void setMetaInfo(const MetaInfo & meta);
};
typedef list<DrvInfo> DrvInfos;
/* If value `v' denotes a derivation, store information about the
derivation in `drv' and return true. Otherwise, return false. */
bool getDerivation(EvalState & state, Value & v, DrvInfo & drv);
void getDerivations(EvalState & state, Value & v, const string & pathPrefix,
Bindings & autoArgs, DrvInfos & drvs);
}
#endif /* !__GET_DRVS_H */
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