35 lines
1.1 KiB
C++
35 lines
1.1 KiB
C++
#ifndef __PRIMOPS_H
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#define __PRIMOPS_H
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#include "eval.hh"
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/* Load and evaluate an expression from path specified by the
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argument. */
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Expr primImport(EvalState & state, Expr arg);
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/* Construct (as a unobservable) side effect) a Nix derivation
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expression that performs the derivation described by the argument
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set. Returns the original set extended with the following
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attributes: `outPath' containing the primary output path of the
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derivation; `drvPath' containing the path of the Nix expression;
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and `type' set to `derivation' to indicate that this is a
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derivation. */
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Expr primDerivation(EvalState & state, Expr args);
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/* Return the base name of the given string, i.e., everything
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following the last slash. */
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Expr primBaseNameOf(EvalState & state, Expr arg);
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/* Convert the argument (which can be a path or a uri) to a string. */
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Expr primToString(EvalState & state, Expr arg);
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/* Return the null value. */
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Expr primNull(EvalState & state);
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/* Determine whether the argument is the null value. */
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Expr primIsNull(EvalState & state, Expr arg);
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#endif /* !__PRIMOPS_H */
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