lix/src/libexpr/get-drvs.hh
Eelco Dolstra 749dd97a54 * Support integers and lists of strings in meta fields. This is
useful for fields like meta.maintainers, meta.priority (which can be
  a proper integer now) and even meta.license (if there are multiple
  licenses).
2009-06-30 15:53:39 +00:00

78 lines
1.5 KiB
C++

#ifndef __GET_DRVS_H
#define __GET_DRVS_H
#include <string>
#include <map>
#include <boost/shared_ptr.hpp>
#include "eval.hh"
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;
public:
string name;
string attrPath; /* path towards the derivation */
string system;
/* !!! these should really be hidden, and setMetaInfo() should
make a copy since the ATermMap can be shared between multiple
DrvInfos. */
boost::shared_ptr<ATermMap> attrs;
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;
/* Evaluate expression `e'. If it evaluates to a derivation, store
information about the derivation in `drv' and return true.
Otherwise, return false. */
bool getDerivation(EvalState & state, Expr e, DrvInfo & drv);
void getDerivations(EvalState & state, Expr e, const string & pathPrefix,
const ATermMap & autoArgs, DrvInfos & drvs);
}
#endif /* !__GET_DRVS_H */