From 19195e2bbdcd7a0db8f84732ce54b1c9d07c006c Mon Sep 17 00:00:00 2001
From: Bent Bisballe Nyeng <deva@aasimon.org>
Date: Sun, 13 Jun 2021 18:24:16 +0200
Subject: Make task an abstract class and make CC and LD versions of it.

---
 libcppbuild.cc | 72 ++++++++++++++++++----------------------------------------
 1 file changed, 22 insertions(+), 50 deletions(-)

(limited to 'libcppbuild.cc')

diff --git a/libcppbuild.cc b/libcppbuild.cc
index 2167173..c75f43e 100644
--- a/libcppbuild.cc
+++ b/libcppbuild.cc
@@ -6,9 +6,11 @@
 #include <list>
 #include <chrono>
 #include <thread>
+#include <memory>
 
 #include "libcppbuild.h"
-#include "task.h"
+#include "task_cc.h"
+#include "task_ld.h"
 #include "settings.h"
 
 #include <unistd.h>
@@ -29,31 +31,33 @@ int main(int argc, const char* argv[])
 	std::filesystem::create_directories(builddir);
 
 	auto config = configs();
-	std::string output = builddir / config.target;
-	const auto& files = config.sources;
-	std::vector<std::string> objects;
-
-	std::vector<Task> tasks;
 
-	for(const auto& file : files)
+	std::vector<std::string> objects;
+	std::vector<std::unique_ptr<Task>> tasks;
+	for(const auto& file : config.sources)
 	{
-		tasks.emplace_back(config, settings, file);
-		objects.push_back(tasks.back().target());
+		tasks.emplace_back(std::make_unique<TaskCC>(config, settings, file));
+		objects.push_back(tasks.back()->target());
 	}
 
+	TaskLD task_ld(config, settings, config.target, objects);
+
 	if(argc == 2 && std::string(argv[1]) == "clean")
 	{
 		std::cout << "Cleaning\n";
 		//std::filesystem::remove_all(builddir);
 		for(auto& task : tasks)
 		{
-			if(task.clean() != 0)
+			if(task->clean() != 0)
 			{
 				return 1;
 			}
 		}
 
-		std::filesystem::remove(output);
+		if(task_ld.clean() != 0)
+		{
+			return 1;
+		}
 
 		return 0;
 	}
@@ -69,7 +73,7 @@ int main(int argc, const char* argv[])
 		while(processes.size() < settings.parallel_processes &&
 		      task != tasks.end())
 		{
-			if(!task->dirty())
+			if(!(*task)->dirty())
 			{
 				++task;
 				continue;
@@ -77,9 +81,9 @@ int main(int argc, const char* argv[])
 
 			processes.emplace_back(
 				std::async(std::launch::async,
-				           [task]()
+				           [&t = *task]()
 				           {
-					           return task->run();
+					           return t->run();
 				           }));
 			++task;
 			std::this_thread::sleep_for(2ms);
@@ -108,49 +112,17 @@ int main(int argc, const char* argv[])
 	    ++process)
 	{
 		process->wait();
-		if(process->get() != 0)
+		auto ret = process->get();
+		if(ret != 0)
 		{
 			return 1;
 		}
 	}
 
 	std::cout << "Linking\n";
-	bool dolink{false};
-	if(!std::filesystem::exists(output))
-	{
-		dolink = true;
-	}
-	else
-	{
-		for(const auto& object : objects)
-		{
-			if(std::filesystem::last_write_time(output) <=
-			   std::filesystem::last_write_time(object))
-			{
-				dolink = true;
-				break;
-			}
-		}
-	}
-
-	if(!dolink)
-	{
-		std::cout << "No linking needed\n";
-		return 0;
-	}
-
-	std::string objectlist;
-	for(const auto& object : objects)
-	{
-		objectlist += object + " ";
-	}
-	std::string compiler = "g++ " + objectlist + " " +
-		config.ldflags + " " +
-		"-o " + output;
-	std::cout << compiler << "\n";
-	if(system(compiler.data()))
+	if(task_ld.dirty())
 	{
-		return 1;
+		return task_ld.run();
 	}
 
 	return 0;
-- 
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