2003-07-14 13:23:11 +03:00
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#ifndef __FSTATE_H
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#define __FSTATE_H
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2003-06-16 16:33:38 +03:00
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extern "C" {
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#include <aterm2.h>
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}
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2003-07-15 19:28:54 +03:00
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#include "store.hh"
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/* Abstract syntax of Nix expressions. */
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typedef list<FSId> FSIds;
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struct ClosureElem
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{
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FSId id;
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StringSet refs;
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};
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typedef map<string, ClosureElem> ClosureElems;
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struct Closure
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{
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StringSet roots;
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ClosureElems elems;
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};
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typedef map<string, FSId> DerivationOutputs;
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typedef map<string, string> StringPairs;
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struct Derivation
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{
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DerivationOutputs outputs;
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FSIdSet inputs;
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string platform;
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string builder;
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Strings args;
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StringPairs env;
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};
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struct NixExpr
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{
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enum { neClosure, neDerivation } type;
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Closure closure;
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Derivation derivation;
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};
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/* Return a canonical textual representation of an expression. */
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string printTerm(ATerm t);
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/* Throw an exception with an error message containing the given
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aterm. */
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Error badTerm(const format & f, ATerm t);
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/* Hash an aterm. */
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Hash hashTerm(ATerm t);
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/* Read an aterm from disk, given its id. */
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ATerm termFromId(const FSId & id);
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/* Write an aterm to the Nix store directory, and return its hash. */
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FSId writeTerm(ATerm t, const string & suffix, FSId id = FSId());
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/* Parse a Nix expression. */
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NixExpr parseNixExpr(ATerm t);
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/* Parse a Nix expression. */
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ATerm unparseNixExpr(const NixExpr & ne);
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2003-07-14 13:23:11 +03:00
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#endif /* !__FSTATE_H */
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