mirror of
https://github.com/NixOS/nix
synced 2024-09-20 11:11:03 -04:00
9e975458b4
need any info on substitutable paths, we just call the substituters (such as download-using-manifests.pl) directly. This means that it's no longer necessary for nix-pull to register substitutes or for nix-channel to clear them, which makes those operations much faster (NIX-95). Also, we don't have to worry about keeping nix-pull manifests (in /nix/var/nix/manifests) and the database in sync with each other. The downside is that there is some overhead in calling an external program to get the substitutes info. For instance, "nix-env -qas" takes a bit longer. Abolishing the substitutes table also makes the logic in local-store.cc simpler, as we don't need to store info for invalid paths. On the downside, you cannot do things like "nix-store -qR" on a substitutable but invalid path (but nobody did that anyway). * Never catch interrupts (the Interrupted exception).
77 lines
1.4 KiB
C++
77 lines
1.4 KiB
C++
#ifndef __TYPES_H
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#define __TYPES_H
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#include <string>
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#include <list>
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#include <set>
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#include <boost/format.hpp>
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namespace nix {
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/* Inherit some names from other namespaces for convenience. */
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using std::string;
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using std::list;
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using std::set;
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using std::vector;
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using boost::format;
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/* BaseError should generally not be caught, as it has Interrupted as
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a subclass. Catch Error instead. */
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class BaseError : public std::exception
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{
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protected:
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string err;
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public:
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BaseError(const format & f);
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~BaseError() throw () { };
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const char * what() const throw () { return err.c_str(); }
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const string & msg() const throw () { return err; }
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BaseError & addPrefix(const format & f);
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};
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#define MakeError(newClass, superClass) \
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class newClass : public superClass \
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{ \
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public: \
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newClass(const format & f) : superClass(f) { }; \
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};
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MakeError(Error, BaseError)
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class SysError : public Error
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{
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public:
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int errNo;
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SysError(const format & f);
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};
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typedef list<string> Strings;
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typedef set<string> StringSet;
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/* Paths are just strings. */
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typedef string Path;
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typedef list<Path> Paths;
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typedef set<Path> PathSet;
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typedef enum {
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lvlError,
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lvlInfo,
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lvlTalkative,
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lvlChatty,
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lvlDebug,
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lvlVomit
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} Verbosity;
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}
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#endif /* !__TYPES_H */
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