Ast visitor function for using declarations.

Added two enviroment variable definitions to the dev Dockerfile.
This way we don't need to add them when compiling a code to test.

Author: filbeofITK

.gitlab/README.md

@@ -0,0 +1,17 @@
+How to use
+==========
+
+Configure environment
+---------------------
+Source the `cc-env.sh` file.
+
+Now the important binaries are available on the `PATH` environment variable:  
+`CodeCompass_parser`, `CodeCompass_webserver`, `CodeCompass_logger`, `ccdb-tool`.
+
+
+Start a database
+----------------
+The tarball contains a CodeCompass instance linked against PostgreSQL, therefore two options are available.
+  - Use the PostgreSQL database server on your machine.
+  - The extracted tarball contains a PostgreSQL installation in the `runtime-deps/postgresql-install/bin` folder.
+    Use the `initdb` and `postgres` binaries to create and start a new PostgreSQL database cluster.

.gitlab/build-codecompass.sh

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+#!/bin/bash
+set -x
+set -e
+
+#####################
+# Build CodeCompass #
+#####################
+
+export PATH=$DEPS_INSTALL_BUILD_DIR/gcc-install/bin\
+:$DEPS_INSTALL_BUILD_DIR/cmake-install/bin\
+:$DEPS_INSTALL_RUNTIME_DIR/libmagic-install/bin\
+:$DEPS_INSTALL_RUNTIME_DIR/odb-install/bin\
+:$DEPS_INSTALL_RUNTIME_DIR/thrift-install/bin\
+:$DEPS_INSTALL_RUNTIME_DIR/jdk-install/bin\
+:$DEPS_INSTALL_RUNTIME_DIR/python-install/bin\
+:$DEPS_INSTALL_RUNTIME_DIR/node-install/bin\
+:$PATH
+
+export CPLUS_INCLUDE_PATH=$DEPS_INSTALL_BUILD_DIR/gtest-install/include\
+:$DEPS_INSTALL_RUNTIME_DIR/libgit2-install/include\
+:$DEPS_INSTALL_RUNTIME_DIR/libmagic-install/include\
+:$DEPS_INSTALL_RUNTIME_DIR/graphviz-install/include\
+:$DEPS_INSTALL_RUNTIME_DIR/boost-install/include\
+:$DEPS_INSTALL_RUNTIME_DIR/openssl-install/include
+
+export C_INCLUDE_PATH=$DEPS_INSTALL_BUILD_DIR/gtest-install/include\
+:$DEPS_INSTALL_RUNTIME_DIR/libgit2-install/include\
+:$DEPS_INSTALL_RUNTIME_DIR/libmagic-install/include\
+:$DEPS_INSTALL_RUNTIME_DIR/graphviz-install/include\
+:$DEPS_INSTALL_RUNTIME_DIR/boost-install/include\
+:$DEPS_INSTALL_RUNTIME_DIR/openssl-install/include
+
+export LIBRARY_PATH=$DEPS_INSTALL_RUNTIME_DIR/graphviz-install/lib\
+:$DEPS_INSTALL_RUNTIME_DIR/libmagic-install/lib\
+:$DEPS_INSTALL_RUNTIME_DIR/libgit2-install/lib\
+:$DEPS_INSTALL_RUNTIME_DIR/libgit2-install/lib64\
+:$DEPS_INSTALL_RUNTIME_DIR/openssl-install/lib
+# Note: libgit2-install/lib required on Ubuntu; libgit2-install/lib64 on SUSE
+
+export LDFLAGS="-Wl,-rpath-link,$DEPS_INSTALL_RUNTIME_DIR/openssl-install/lib "\
+"-Wl,-rpath-link,$DEPS_INSTALL_RUNTIME_DIR/postgresql-install/lib"
+
+export LD_LIBRARY_PATH=$DEPS_INSTALL_RUNTIME_DIR/odb-install/lib\
+:$LD_LIBRARY_PATH
+
+export CMAKE_PREFIX_PATH=$DEPS_INSTALL_RUNTIME_DIR/libgit2-install\
+:$DEPS_INSTALL_RUNTIME_DIR/odb-install\
+:$DEPS_INSTALL_RUNTIME_DIR/thrift-install\
+:$DEPS_INSTALL_RUNTIME_DIR/boost-install\
+:$DEPS_INSTALL_RUNTIME_DIR/llvm-install
+
+export GTEST_ROOT=$DEPS_INSTALL_BUILD_DIR/gtest-install
+
+export CXX=$DEPS_INSTALL_BUILD_DIR/gcc-install/bin/g++
+export CC=$DEPS_INSTALL_BUILD_DIR/gcc-install/bin/gcc
+
+mkdir $CC_BUILD_DIR
+cd $CC_BUILD_DIR
+cmake $CC_SRC_DIR \
+  -DCMAKE_INSTALL_PREFIX=$CC_INSTALL_DIR \
+  -DDATABASE=pgsql \
+  -DCMAKE_BUILD_TYPE=RelWithDebInfo \
+  -DLLVM_DIR=$DEPS_INSTALL_RUNTIME_DIR/llvm/lib/cmake/llvm/ \
+  -DClang_DIR=$DEPS_INSTALL_RUNTIME_DIR/llvm/lib/cmake/clang/
+make install --quiet --jobs $(nproc)