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Setting: Remove "Tag" template argument

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This commit is contained in:
Eelco Dolstra 2017-04-20 16:52:53 +02:00
parent f05d5f89ff
commit 4410e9d995
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GPG key ID: 8170B4726D7198DE
5 changed files with 90 additions and 74 deletions
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22
src/libstore/globals.cc
View file

@ -73,7 +73,7 @@ unsigned int Settings::getDefaultCores()
const string nixVersion = PACKAGE_VERSION;
template<> void Setting<SandboxMode>::set(const std::string & str)
template<> void BaseSetting<SandboxMode>::set(const std::string & str)
{
if (str == "true") value = smEnabled;
else if (str == "relaxed") value = smRelaxed;
@ -81,7 +81,7 @@ template<> void Setting<SandboxMode>::set(const std::string & str)
else throw UsageError("option '%s' has invalid value '%s'", name, str);
}
template<> std::string Setting<SandboxMode>::to_string()
template<> std::string BaseSetting<SandboxMode>::to_string()
{
if (value == smEnabled) return "true";
else if (value == smRelaxed) return "relaxed";
@ -89,27 +89,11 @@ template<> std::string Setting<SandboxMode>::to_string()
else abort();
}
template<> void Setting<unsigned int, Settings::MaxBuildJobsTag>::set(const std::string & str)
void MaxBuildJobsSetting::set(const std::string & str)
{
if (str == "auto") value = std::max(1U, std::thread::hardware_concurrency());
else if (!string2Int(str, value))
throw UsageError("configuration setting ‘%s’ should be ‘auto’ or an integer", name);
}
template<> std::string Setting<unsigned int, Settings::MaxBuildJobsTag>::to_string()
{
return std::to_string(value);
}
template<> void Setting<bool, Settings::CaseHackTag>::set(const std::string & str)
{
value = parseBool(str);
nix::useCaseHack = true;
}
template<> std::string Setting<bool, Settings::CaseHackTag>::to_string()
{
return printBool(value);
}
}

39
src/libstore/globals.hh
View file

@ -13,6 +13,39 @@ typedef enum { smEnabled, smRelaxed, smDisabled } SandboxMode;
extern bool useCaseHack; // FIXME
struct CaseHackSetting : public BaseSetting<bool>
{
CaseHackSetting(Config * options,
const std::string & name,
const std::string & description,
const std::set<std::string> & aliases = {})
: BaseSetting<bool>(useCaseHack, name, description, aliases)
{
options->addSetting(this);
}
void set(const std::string & str) override
{
BaseSetting<bool>::set(str);
nix::useCaseHack = true;
}
};
struct MaxBuildJobsSetting : public BaseSetting<unsigned int>
{
MaxBuildJobsSetting(Config * options,
unsigned int def,
const std::string & name,
const std::string & description,
const std::set<std::string> & aliases = {})
: BaseSetting<unsigned int>(def, name, description, aliases)
{
options->addSetting(this);
}
void set(const std::string & str) override;
};
class Settings : public Config {
unsigned int getDefaultCores();
@ -66,8 +99,7 @@ public:
the log to show if a build fails. */
size_t logLines = 10;
struct MaxBuildJobsTag { };
Setting<unsigned int, MaxBuildJobsTag> maxBuildJobs{this, 1, "build-max-jobs",
MaxBuildJobsSetting maxBuildJobs{this, 1, "build-max-jobs",
"Maximum number of parallel build jobs. \"auto\" means use number of cores."};
Setting<unsigned int> buildCores{this, getDefaultCores(), "build-cores",
@ -268,8 +300,7 @@ public:
Setting<bool> enableImportFromDerivation{this, true, "allow-import-from-derivation",
"Whether the evaluator allows importing the result of a derivation."};
struct CaseHackTag { };
Setting<bool, CaseHackTag> useCaseHack{this, nix::useCaseHack, "use-case-hack",
CaseHackSetting useCaseHack{this, "use-case-hack",
"Whether to enable a Darwin-specific hack for dealing with file name collisions."};
Setting<unsigned long> connectTimeout{this, 0, "connect-timeout",

53
src/libutil/config.cc
View file

@ -111,83 +111,72 @@ AbstractSetting::AbstractSetting(
{
}
template<> void Setting<std::string>::set(const std::string & str)
template<> void BaseSetting<std::string>::set(const std::string & str)
{
value = str;
}
template<> std::string Setting<std::string>::to_string()
template<> std::string BaseSetting<std::string>::to_string()
{
return value;
}
template<typename T, typename Tag>
void Setting<T, Tag>::set(const std::string & str)
template<typename T>
void BaseSetting<T>::set(const std::string & str)
{
static_assert(std::is_integral<T>::value, "Integer required.");
if (!string2Int(str, value))
throw UsageError("setting '%s' has invalid value '%s'", name, str);
}
template<typename T, typename Tag>
std::string Setting<T, Tag>::to_string()
template<typename T>
std::string BaseSetting<T>::to_string()
{
static_assert(std::is_integral<T>::value, "Integer required.");
return std::to_string(value);
}
bool AbstractSetting::parseBool(const std::string & str)
template<> void BaseSetting<bool>::set(const std::string & str)
{
if (str == "true" || str == "yes" || str == "1")
return true;
value = true;
else if (str == "false" || str == "no" || str == "0")
return false;
value = false;
else
throw UsageError("Boolean setting '%s' has invalid value '%s'", name, str);
}
template<> void Setting<bool>::set(const std::string & str)
template<> std::string BaseSetting<bool>::to_string()
{
value = parseBool(str);
return value ? "true" : "false";
}
std::string AbstractSetting::printBool(bool b)
{
return b ? "true" : "false";
}
template<> std::string Setting<bool>::to_string()
{
return printBool(value);
}
template<> void Setting<Strings>::set(const std::string & str)
template<> void BaseSetting<Strings>::set(const std::string & str)
{
value = tokenizeString<Strings>(str);
}
template<> std::string Setting<Strings>::to_string()
template<> std::string BaseSetting<Strings>::to_string()
{
return concatStringsSep(" ", value);
}
template<> void Setting<StringSet>::set(const std::string & str)
template<> void BaseSetting<StringSet>::set(const std::string & str)
{
value = tokenizeString<StringSet>(str);
}
template<> std::string Setting<StringSet>::to_string()
template<> std::string BaseSetting<StringSet>::to_string()
{
return concatStringsSep(" ", value);
}
template class Setting<int>;
template class Setting<unsigned int>;
template class Setting<long>;
template class Setting<unsigned long>;
template class Setting<long long>;
template class Setting<unsigned long long>;
template class BaseSetting<int>;
template class BaseSetting<unsigned int>;
template class BaseSetting<long>;
template class BaseSetting<unsigned long>;
template class BaseSetting<long long>;
template class BaseSetting<unsigned long long>;
void PathSetting::set(const std::string & str)
{

48
src/libutil/config.hh
View file

@ -90,17 +90,12 @@ protected:
virtual std::string to_string() = 0;
bool parseBool(const std::string & str);
std::string printBool(bool b);
bool isOverriden() { return overriden; }
};
struct DefaultSettingTag { };
/* A setting of type T. */
template<typename T, typename Tag = DefaultSettingTag>
class Setting : public AbstractSetting
template<typename T>
class BaseSetting : public AbstractSetting
{
protected:
@ -108,23 +103,21 @@ protected:
public:
Setting(Config * options,
const T & def,
BaseSetting(const T & def,
const std::string & name,
const std::string & description,
const std::set<std::string> & aliases = {})
: AbstractSetting(name, description, aliases)
, value(def)
{
options->addSetting(this);
}
{ }
operator const T &() const { return value; }
operator T &() { return value; }
const T & get() const { return value; }
bool operator ==(const T & v2) const { return value == v2; }
bool operator !=(const T & v2) const { return value != v2; }
void operator =(const T & v) { value = v; }
void operator =(const T & v) { assign(v); }
virtual void assign(const T & v) { value = v; }
void set(const std::string & str) override;
@ -132,18 +125,35 @@ public:
};
template<typename T>
std::ostream & operator <<(std::ostream & str, const Setting<T> & opt)
std::ostream & operator <<(std::ostream & str, const BaseSetting<T> & opt)
{
str << (const T &) opt;
return str;
}
template<typename T>
bool operator ==(const T & v1, const Setting<T> & v2) { return v1 == (const T &) v2; }
bool operator ==(const T & v1, const BaseSetting<T> & v2) { return v1 == (const T &) v2; }
template<typename T>
class Setting : public BaseSetting<T>
{
public:
Setting(Config * options,
const T & def,
const std::string & name,
const std::string & description,
const std::set<std::string> & aliases = {})
: BaseSetting<T>(def, name, description, aliases)
{
options->addSetting(this);
}
void operator =(const T & v) { this->assign(v); }
};
/* A special setting for Paths. These are automatically canonicalised
(e.g. "/foo//bar/" becomes "/foo/bar"). */
class PathSetting : public Setting<Path>
class PathSetting : public BaseSetting<Path>
{
bool allowEmpty;
@ -155,15 +165,17 @@ public:
const std::string & name,
const std::string & description,
const std::set<std::string> & aliases = {})
: Setting<Path>(options, def, name, description, aliases)
: BaseSetting<Path>(def, name, description, aliases)
, allowEmpty(allowEmpty)
{
set(value);
options->addSetting(this);
}
void set(const std::string & str) override;
Path operator +(const char * p) const { return value + p; }
void operator =(const Path & v) { this->assign(v); }
};
}

2
src/nix-daemon/nix-daemon.cc
View file

@ -440,7 +440,7 @@ static void performOp(ref<LocalStore> store, bool trusted, unsigned int clientVe
settings.keepGoing = readInt(from);
settings.tryFallback = readInt(from);
verbosity = (Verbosity) readInt(from);
settings.maxBuildJobs = readInt(from);
settings.maxBuildJobs.assign(readInt(from));
settings.maxSilentTime = readInt(from);
settings.useBuildHook = readInt(from) != 0;
settings.verboseBuild = lvlError == (Verbosity) readInt(from);