From b9da21dbc5750f5606683a3b522ffffad225f742 Mon Sep 17 00:00:00 2001
From: Robin Jadoul <robin.jadoul@gmail.com>
Date: Thu, 26 May 2016 16:00:32 +0200
Subject: [PATCH] Implementation of driver code

---
 include/Lexesis/driver.h | 28 ++++++++++++++++++++++++++++
 src/CMakeLists.txt       |  3 ++-
 src/driver.cpp           | 37 +++++++++++++++++++++++++++++++++++++
 3 files changed, 67 insertions(+), 1 deletion(-)
 create mode 100644 include/Lexesis/driver.h
 create mode 100644 src/driver.cpp

diff --git a/include/Lexesis/driver.h b/include/Lexesis/driver.h
new file mode 100644
index 0000000..c248432
--- /dev/null
+++ b/include/Lexesis/driver.h
@@ -0,0 +1,28 @@
+#pragma once
+#ifndef LEXESIS_DRIVER_H
+#define LEXESIS_DRIVER_H
+
+#include <memory>
+#include <string>
+
+#include "Lexesis/backendmanager.h"
+
+namespace lxs {
+    class Driver {
+        public:
+            Driver(std::unique_ptr<BackendManager> backends, std::istream& inputfile, std::string outputdir, std::string language, std::string lexername);
+            ~Driver();
+
+            int run();
+
+        private:
+            std::unique_ptr<BackendManager> m_backends;
+            std::istream& m_inputfile;
+            std::string m_outputdir;
+            std::string m_language;
+            std::string m_lexername;
+    };
+}
+
+#endif //LEXESIS_DRIVER_H
+
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 208d3a7..09c9e26 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -10,11 +10,12 @@ add_executable(Lexesis
     automata.cpp
     backend.cpp
     backendmanager.cpp
+    driver.cpp
     re.cpp
     inputparser.cpp
     template.cpp
     )
-target_link_libraries(Lexesis Lexesis-backends mstch::mstch docopt)
+target_link_libraries(Lexesis Lexesis-backends mstch::mstch cpp-optparse)
 
 install(TARGETS Lexesis
     RUNTIME DESTINATION bin
diff --git a/src/driver.cpp b/src/driver.cpp
new file mode 100644
index 0000000..3165ed5
--- /dev/null
+++ b/src/driver.cpp
@@ -0,0 +1,37 @@
+#include "Lexesis/driver.h"
+#include "Lexesis/inputparser.h"
+
+#include <iostream>
+#include <fstream>
+
+namespace lxs {
+    Driver::Driver(std::unique_ptr<BackendManager> backends, std::istream& inputfile, std::string outputdir, std::string language, std::string lexername) :
+                m_backends(std::move(backends)),
+                m_inputfile(inputfile),
+                m_outputdir(outputdir),
+                m_language(language),
+                m_lexername(lexername)
+    {
+        //TODO clean lexername
+    }
+
+    Driver::~Driver()
+    {}
+
+    int Driver::run() {
+        Backend* back = m_backends->findBackendForLang(m_language);
+        if (!back) {
+            std::cerr << "Could not find a valid backend for language " << m_language << std::endl;
+            return 1;
+        }
+
+        DFA dfa = InputParser::parseInput(m_inputfile);
+
+        back->generateLexer([this](std::string filename) -> std::unique_ptr<std::ostream> {
+                    return std::unique_ptr<std::ostream>(new std::ofstream(m_outputdir + "/" + filename));
+                },
+                m_lexername, dfa);
+
+        return 0;
+    }
+}