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// -*- c++ -*-
// Distributed under the BSD 2-Clause License.
// See accompanying file LICENSE for details.
#include "task_fn.h"
#include <iostream>
#include <fstream>
#include <cassert>
#include "ctor.h"
#include "execute.h"
#include "util.h"
TaskFn::TaskFn(const ctor::build_configuration& config_,
const ctor::settings& settings_,
const std::string& sourceDir_,
const ctor::source& source)
: Task(config_, settings_, sourceDir_)
, config(config_)
, settings(settings_)
{
std::filesystem::create_directories(std::filesystem::path(settings.builddir) /
sourceDir.parent_path());
target_type = config.type;
source_language = source.language;
if(std::holds_alternative<ctor::GeneratorOneToOne>(config.function))
{
if(source.source_type == ctor::source_type::generated)
{
sourceFile = std::filesystem::path(settings.builddir);
}
sourceFile /= sourceDir / source.file;
std::filesystem::path base = sourceFile.parent_path();
if(source.output.empty())
{
std::cerr << "Missing target/output file for functional target.\n";
exit(1);
}
_targetFile = base / source.output;
}
else if(std::holds_alternative<ctor::GeneratorManyToOne>(config.function))
{
for(const auto& src : config.sources)
{
std::filesystem::path _src;
if(src.source_type == ctor::source_type::generated)
{
_src = std::filesystem::path(settings.builddir);
}
_src /= sourceDir / src.file;
sources.push_back(_src.string());
}
std::filesystem::path base = sourceDir;
if(config.target.empty())
{
std::cerr << "Missing target file for functional target\n";
exit(1);
}
_targetFile = base / config.target;
sourceListFile = targetFile().parent_path() / targetFile().filename();
sourceListFile += ".sources";
}
}
bool TaskFn::dirtyInner()
{
if(!std::filesystem::exists(targetFile()))
{
//std::cout << "Missing targetFile\n";
return true;
}
if(std::holds_alternative<ctor::GeneratorManyToOne>(config.function))
{
if(!std::filesystem::exists(sourceListFile))
{
//std::cout << "Missing sourceListFile\n";
return true;
}
{
auto lastSourceList = readFile(sourceListFile.string());
if(sourceListString() != lastSourceList)
{
//std::cout << "The compiler sourceList changed\n";
return true;
}
}
}
std::filesystem::file_time_type last_changed{};
bool missing{false};
if(std::holds_alternative<ctor::GeneratorOneToOne>(config.function))
{
if(!std::filesystem::exists(sourceFile))
{
missing = true;
}
last_changed = std::filesystem::last_write_time(sourceFile);
}
else if(std::holds_alternative<ctor::GeneratorManyToOne>(config.function))
{
bool first{true};
for(const auto& source : sources)
{
if(!std::filesystem::exists(source))
{
missing |= true;
}
else
{
if(first)
{
last_changed = std::filesystem::last_write_time(source);
}
else
{
last_changed =
std::max(last_changed,
std::filesystem::last_write_time(source));
}
}
first = false;
}
}
if(missing)
{
return true;
}
if(last_changed > std::filesystem::last_write_time(targetFile()))
{
//std::cout << "The targetFile older than sourceFile\n";
return true;
}
return false;
}
int TaskFn::runInner()
{
if(std::holds_alternative<ctor::GeneratorManyToOne>(config.function))
{
// Write sourceList to file.
std::ofstream sourceListStream(sourceListFile.string());
sourceListStream << sourceListString();
}
if(settings.verbose >= 0)
{
std::string output = "Fn " +
sourceFile.lexically_normal().string() + " => " +
targetFile().lexically_normal().string() + '\n';
std::cout << output << std::flush;
}
int res{};
if(std::holds_alternative<std::monostate>(config.function))
{
}
else if(std::holds_alternative<ctor::GeneratorOneToOne>(config.function))
{
auto func = std::get<ctor::GeneratorOneToOne>(config.function);
res = func(sourceFile.string(),
targetFile().string(),
config,
settings);
}
else if(std::holds_alternative<ctor::GeneratorManyToOne>(config.function))
{
auto func = std::get<ctor::GeneratorManyToOne>(config.function);
res = func(sources,
targetFile().string(),
config,
settings);
}
if(res != 0)
{
std::filesystem::remove(targetFile());
}
return res;
}
int TaskFn::clean()
{
if(std::filesystem::exists(targetFile()))
{
std::cout << "Removing " << targetFile().string() << "\n";
std::filesystem::remove(targetFile());
}
if(std::holds_alternative<ctor::GeneratorManyToOne>(config.function))
{
if(std::filesystem::exists(sourceListFile))
{
std::cout << "Removing " << sourceListFile.string() << "\n";
std::filesystem::remove(sourceListFile);
}
}
return 0;
}
std::vector<std::string> TaskFn::depends() const
{
std::vector<std::string> deps;
if(std::holds_alternative<ctor::GeneratorManyToOne>(config.function))
{
for(const auto& src : config.sources)
{
if(src.source_type == ctor::source_type::generated)
{
std::filesystem::path _src = std::filesystem::path(settings.builddir);
_src /= src.file;
deps.push_back(_src.string());
}
}
}
return deps;
}
std::string TaskFn::target() const
{
return _targetFile.string();
}
std::filesystem::path TaskFn::targetFile() const
{
return std::filesystem::path(settings.builddir) / _targetFile;
}
std::string TaskFn::sourceListString() const
{
std::string sourceListStr;
for(const auto& source : config.sources)
{
sourceListStr += " " + source.file;
}
return sourceListStr;
}
bool TaskFn::derived() const
{
return false;
}
std::string TaskFn::toJSON() const
{
return {}; // TODO: Not sure how to express this...
}
std::string TaskFn::source() const
{
return sourceFile.string();
}
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