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Use upstream json_fwd.hpp to speed up compilation

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This commit is contained in:
Eelco Dolstra 2019-10-21 22:11:21 +02:00
parent cb1a79a96a
commit 45b740c18b
6 changed files with 75 additions and 13 deletions
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2
src/libstore/build.cc
View file

@ -2521,7 +2521,7 @@ static std::regex shVarName("[A-Za-z_][A-Za-z0-9_]*");
void DerivationGoal::writeStructuredAttrs()
{
auto & structuredAttrs = parsedDrv->getStructuredAttrs();
auto structuredAttrs = parsedDrv->getStructuredAttrs();
if (!structuredAttrs) return;
auto json = *structuredAttrs;

6
src/libstore/parsed-derivations.cc
View file

@ -1,5 +1,7 @@
#include "parsed-derivations.hh"
#include <nlohmann/json.hpp>
namespace nix {
ParsedDerivation::ParsedDerivation(const Path & drvPath, BasicDerivation & drv)
@ -9,13 +11,15 @@ ParsedDerivation::ParsedDerivation(const Path & drvPath, BasicDerivation & drv)
auto jsonAttr = drv.env.find("__json");
if (jsonAttr != drv.env.end()) {
try {
structuredAttrs = nlohmann::json::parse(jsonAttr->second);
structuredAttrs = std::make_unique<nlohmann::json>(nlohmann::json::parse(jsonAttr->second));
} catch (std::exception & e) {
throw Error("cannot process __json attribute of '%s': %s", drvPath, e.what());
}
}
}
ParsedDerivation::~ParsedDerivation() { }
std::optional<std::string> ParsedDerivation::getStringAttr(const std::string & name) const
{
if (structuredAttrs) {

10
src/libstore/parsed-derivations.hh
View file

@ -1,6 +1,6 @@
#include "derivations.hh"
#include <nlohmann/json.hpp>
#include <nlohmann/json_fwd.hpp>
namespace nix {
@ -8,15 +8,17 @@ class ParsedDerivation
{
Path drvPath;
BasicDerivation & drv;
std::optional<nlohmann::json> structuredAttrs;
std::unique_ptr<nlohmann::json> structuredAttrs;
public:
ParsedDerivation(const Path & drvPath, BasicDerivation & drv);
const std::optional<nlohmann::json> & getStructuredAttrs() const
~ParsedDerivation();
const nlohmann::json * getStructuredAttrs() const
{
return structuredAttrs;
return structuredAttrs.get();
}
std::optional<std::string> getStringAttr(const std::string & name) const;