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

docker/dev/Dockerfile

@@ -45,6 +45,8 @@ COPY docker/dev/codecompass-build.sh /usr/local/bin
 ENV DATABASE=sqlite \
     BUILD_TYPE=Release \
     BUILD_DIR=/CodeCompass/build \
+    LLVM_DIR=/usr/lib/llvm-10/cmake \
+    Clang_DIR=/usr/lib/cmake/clang-10 \
     INSTALL_DIR=/CodeCompass/install \
     SOURCE_DIR=/CodeCompass/CodeCompass \
     TEST_WORKSPACE=/CodeCompass/test_workspace \

plugins/cpp/parser/src/clangastvisitor.h

@@ -956,6 +956,35 @@ class ClangASTVisitor : public clang::RecursiveASTVisitor<ClangASTVisitor>
 
     return true;
   }
+  
+  
+  
+  bool VisitUsingDecl(clang::UsingDecl* ud_){
+
+    //--- CppAstNode ---//
+    
+    model::CppAstNodePtr astNode = std::make_shared<model::CppAstNode>();
+    
+    //std::string mangledName = getMangledName(_mngCtx, ud_, astNode->location);
+    astNode->astValue = getSourceText(
+      _clangSrcMgr,
+      ud_->getBeginLoc(),
+      ud_->getLocation(),
+      true);
+    std::string usr = getUSR(ud_);
+    astNode->location = getFileLoc(ud_->getBeginLoc(), ud_->getEndLoc());
+    //astNode->mangledNameHash = util::fnvHash(mangledName);
+    astNode->entityHash = util::fnvHash(usr);
+    astNode->astType = model::CppAstNode::AstType::Definition;
+    astNode->id = model::createIdentifier(*astNode);
+    
+    if (insertToCache(ud_, astNode)){
+      _astNodes.push_back(astNode);
+    }
+    
+    return true;
+  }
+  
 
   bool VisitCXXConstructExpr(clang::CXXConstructExpr* ce_)
   {