Add basic compilation database parsing

test/CMakeLists.txt

@@ -9,25 +9,26 @@ if(NOT EXISTS ${CMAKE_CURRENT_BINARY_DIR}/catch.hpp)
 endif()
 
 set(tests
-    code_generator.cpp
-    cpp_alias_template.cpp
-    cpp_class.cpp
-    cpp_class_template.cpp
-    cpp_enum.cpp
-    cpp_friend.cpp
-    cpp_function.cpp
-    cpp_function_template.cpp
-    cpp_language_linkage.cpp
-    cpp_member_function.cpp
-    cpp_member_variable.cpp
-    cpp_namespace.cpp
-    cpp_preprocessor.cpp
-    cpp_static_assert.cpp
-    cpp_template_parameter.cpp
-    cpp_type_alias.cpp
-    cpp_variable.cpp
-    visitor.cpp
-    integration.cpp)
+        code_generator.cpp
+        cpp_alias_template.cpp
+        cpp_class.cpp
+        cpp_class_template.cpp
+        cpp_enum.cpp
+        cpp_friend.cpp
+        cpp_function.cpp
+        cpp_function_template.cpp
+        cpp_language_linkage.cpp
+        cpp_member_function.cpp
+        cpp_member_variable.cpp
+        cpp_namespace.cpp
+        cpp_preprocessor.cpp
+        cpp_static_assert.cpp
+        cpp_template_parameter.cpp
+        cpp_type_alias.cpp
+        cpp_variable.cpp
+        integration.cpp
+        libclang_parser.cpp
+        visitor.cpp)
 
 add_executable(cppast_test test.cpp test_parser.hpp ${tests})
 target_include_directories(cppast_test PUBLIC ${CMAKE_CURRENT_BINARY_DIR})

test/libclang_parser.cpp

@@ -0,0 +1,70 @@
+// 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 <catch.hpp>
+
+#include <cppast/libclang_parser.hpp>
+
+#include <fstream>
+
+using namespace cppast;
+
+libclang_compilation_database get_database(const char* json)
+{
+    std::ofstream file("compile_commands.json");
+    file << json;
+    file.close();
+
+    return libclang_compilation_database(".");
+}
+
+void require_flags(const libclang_compile_config& config, const char* flags)
+{
+    std::string result;
+    auto        config_flags = detail::libclang_compile_config_access::flags(config);
+    // skip first 4, those are the default options
+    for (auto iter = config_flags.begin() + 4; iter != config_flags.end(); ++iter)
+        result += *iter + ' ';
+    result.pop_back();
+    REQUIRE(result == flags);
+}
+
+TEST_CASE("libclang_compile_config")
+{
+    // only test database parser
+    auto json = R"([
+{
+    "directory": "/foo",
+    "command": "/usr/bin/clang++ -Irelative -I/absolute -DA=FOO -DB(X)=X -c -o a.o a.cpp",
+    "file": "a.cpp"
+},
+{
+    "directory": "/bar/",
+    "command": "/usr/bin/clang++ -Irelative -DA=FOO -c -o b.o b.cpp",
+    "command": "/usr/bin/clang++ -I/absolute -DB(X)=X -c -o b.o b.cpp",
+    "file": "/b.cpp",
+},
+{
+    "directory": "/bar/",
+    "command": "/usr/bin/clang++ -I/absolute -DB(X)=X -c -o b.o b.cpp",
+    "file": "/b.cpp",
+},
+{
+    "directory": "",
+    "command": "/usr/bin/clang++ -std=c++14 -fms-extensions -fms-compatibility -c -o c.o c.cpp",
+    "file": "/c.cpp",
+}
+])";
+
+    auto database = get_database(json);
+
+    libclang_compile_config a(database, "/foo/a.cpp");
+    require_flags(a, "-I/foo/relative -I/absolute -DA=FOO -DB(X)=X");
+
+    libclang_compile_config b(database, "/b.cpp");
+    require_flags(b, "-I/bar/relative -DA=FOO -I/absolute -DB(X)=X");
+
+    libclang_compile_config c(database, "/c.cpp");
+    require_flags(c, "-std=c++14 -fms-extensions -fms-compatibility");
+}