Add parse_files() utility function

test/CMakeLists.txt

@@ -28,6 +28,7 @@ set(tests
         cpp_variable.cpp
         integration.cpp
         libclang_parser.cpp
+        parser.cpp
         visitor.cpp)
 
 add_executable(cppast_test test.cpp test_parser.hpp ${tests})

test/parser.cpp

@@ -0,0 +1,71 @@
+// Copyright (C) 2017 Jonathan Müller <jonathanmueller.dev@gmail.com>
+// This file is subject to the license terms in the LICENSE file
+// found in the top-level directory of this distribution.
+
+#include <cppast/parser.hpp>
+
+#include <catch.hpp>
+
+using namespace cppast;
+
+TEST_CASE("parse_files")
+{
+    class null_compile_config : public compile_config
+    {
+    public:
+        null_compile_config() : compile_config({})
+        {
+        }
+
+    private:
+        void do_set_flags(cpp_standard, compile_flags) override
+        {
+        }
+
+        void do_add_include_dir(std::string) override
+        {
+        }
+
+        void do_add_macro_definition(std::string, std::string) override
+        {
+        }
+
+        void do_remove_macro_definition(std::string) override
+        {
+        }
+
+        const char* do_get_name() const noexcept override
+        {
+            return "null";
+        }
+    } config;
+
+    class null_parser : public parser
+    {
+    public:
+        using config = null_compile_config;
+
+        null_parser() : parser(type_safe::ref(logger_))
+        {
+        }
+
+    private:
+        std::unique_ptr<cpp_file> do_parse(const cpp_entity_index& idx, std::string path,
+                                           const compile_config&) const override
+        {
+            return cpp_file::builder(std::move(path)).finish(idx);
+        }
+
+        stderr_diagnostic_logger logger_;
+    };
+
+    cpp_entity_index                idx;
+    simple_file_parser<null_parser> parser(type_safe::ref(idx));
+
+    auto file_names = {"a.cpp", "b.cpp", "c.cpp"};
+    parse_files(parser, file_names, config);
+
+    auto iter = file_names.begin();
+    for (auto& file : parser.files())
+        REQUIRE(file.name() == *iter++);
+}