lix/src/libstore/storeexpr.hh

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#ifndef __STOREEXPR_H
#define __STOREEXPR_H
#include "aterm.hh"
#include "store.hh"
/* Abstract syntax of store expressions. */
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struct ClosureElem
{
PathSet refs;
};
typedef map<Path, ClosureElem> ClosureElems;
struct Closure
{
PathSet roots;
ClosureElems elems;
};
typedef map<string, string> StringPairs;
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struct Derivation
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{
PathSet outputs;
PathSet inputs; /* Store expressions, not actual inputs */
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string platform;
Path builder;
Strings args;
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StringPairs env;
};
struct StoreExpr
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{
enum { neClosure, neDerivation } type;
Closure closure;
Derivation derivation;
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};
/* Hash an aterm. */
Hash hashTerm(ATerm t);
/* Write an aterm to the Nix store directory, and return its path. */
Path writeTerm(ATerm t, const string & suffix);
/* Parse a store expression. */
StoreExpr parseStoreExpr(ATerm t);
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/* Parse a store expression. */
ATerm unparseStoreExpr(const StoreExpr & ne);
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#endif /* !__STOREEXPR_H */