ifndef are replaced with the pragma once

.gitignore

@@ -7,3 +7,4 @@
 *.so
 *.dSYM/
 memgraph
+*~

README.md

@@ -21,4 +21,3 @@ on a 64 bit linux kernel.
 * catch (for compiling tests)
 
 ## build
-

api/resources/node.hpp

@@ -4,6 +4,7 @@
 #include <random>
 
 #include "api/restful/resource.hpp"
+#include "mvcc/version_list.hpp"
 #include "debug/log.hpp"
 
 #pragma url /node
@@ -15,46 +16,33 @@ public:
     void post(sp::Request& req, sp::Response& res)
     {
         task->run([this, &req]() {
-            // start a new transaction and obtain a reference to it
-            auto t = db->tx_engine.begin();
+            // VertexRecord vertex;
+            // auto& transaction = db->tx_engine.begin();
+            // auto accessor = vertex.access(transaction);
+            // auto node = accessor.insert();
 
-            // insert a new vertex in the graph
-            auto atom = db->graph.vertices.insert(t);
+            // // TODO: req.json can be empty
+            // // probably there is some other place to handle
+            // // emptiness of req.json
 
-            // a new version was created and we got an atom along with the
-            // first version. obtain a pointer to the first version
-            //
-            //        nullptr
-            //           ^
-            //           |
-            //      [Vertex  v1]
-            //           ^
-            //           |
-            //      [Atom id=k]   k {1, 2, ...}
-            //
-            auto node = atom->first();
+            // // first version
+            // //
+            // // for(key, value in body)
+            // //     node->properties[key] = value;
+            // for(auto it = req.json.MemberBegin(); it != req.json.MemberEnd(); ++it)
+            // {
+            //     vertex->data.props.set<String>(it->name.GetString(), it->value.GetString());
+            // }
 
-            // TODO: req.json can be empty
-            // probably there is some other place to handle
-            // emptiness of req.json
-
-            // first version
-            //
-            // for(key, value in body)
-            //     node->properties[key] = value;
-            for(auto it = req.json.MemberBegin(); it != req.json.MemberEnd(); ++it)
-            {
-                node->properties.emplace<String>(it->name.GetString(), it->value.GetString());
-            }
-
-            // commit the transaction
-            db->tx_engine.commit(t);
+            // transaction.commit();
 
             // return the node we created so we can send it as a response body
-            return node;
+            //return node;
+            return nullptr;
         }, 
         [&req, &res](Vertex* node) {
-            return res.send(properties_to_string(node));
+            return res.send("TODO");
+            // return res.send(properties_to_string(node));
         });
     }
 };
@@ -68,10 +56,11 @@ public:
     void get(sp::Request& req, sp::Response& res)
     {
         task->run([this, &req]() -> Vertex* {
-            // read id param
-            Id id(std::stoull(req.params[0])); 
-            // TODO: transaction?
-            return db->graph.find_vertex(id);
+            // // read id param
+            // Id id(std::stoull(req.params[0])); 
+            // // TODO: transaction?
+            // return db->graph.find_vertex(id);
+            return nullptr;
         },
         [&req, &res](Vertex* node) {
             if (node == nullptr) {

cypher/ast/accessor.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_CYPHER_AST_AST_ACCESSOR_HPP
-#define MEMGRAPH_CYPHER_AST_AST_ACCESSOR_HPP
+#pragma once
 
 #include <memory>
 #include <string>
@@ -20,5 +19,3 @@ struct Accessor : public VisitableExpr<Accessor>
 };
 
 }
-
-#endif

cypher/ast/ast.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_CYPHER_AST_AST_HPP
-#define MEMGRAPH_CYPHER_AST_AST_HPP
+#pragma once
 
 #include "accessor.hpp"
 #include "values.hpp"
@@ -14,5 +13,3 @@
 #include "match.hpp"
 #include "queries.hpp"
 #include "start.hpp"
-
-#endif

cypher/ast/ast_echo.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_CYPHER_AST_PRINT_TREE_HPP
-#define MEMGRAPH_CYPHER_AST_PRINT_TREE_HPP
+#pragma once
 
 #include <iostream>
 
@@ -20,5 +19,3 @@ public:
 };
 
 }
-
-#endif

cypher/ast/ast_node.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_CYPHER_AST_AST_NODE_HPP
-#define MEMGRAPH_CYPHER_AST_AST_NODE_HPP
+#pragma once
 
 #include <memory>
 
@@ -29,5 +28,3 @@ struct AstNode : public Crtp<Derived>, public AstVisitable
 };
 
 }
-
-#endif

cypher/ast/ast_visitor.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_CYPHER_AST_AST_VISITOR_HPP
-#define MEMGRAPH_CYPHER_AST_AST_VISITOR_HPP
+#pragma once
 
 #include "utils/visitor/visitor.hpp"
 
@@ -62,5 +61,3 @@ struct AstVisitor : public Visitor<Accessor, Boolean, Float, Identifier,
     Start, Where, WriteQuery, Create, Return> {};
 
 }
-
-#endif

cypher/ast/create.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_CYPHER_AST_CREATE_HPP
-#define MEMGRAPH_CYPHER_AST_CREATE_HPP
+#pragma once
 
 #include "ast_node.hpp"
 #include "pattern.hpp"
@@ -17,5 +16,3 @@ struct Create : public AstNode<Create>
 };
 
 }
-
-#endif

cypher/ast/expr.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_CYPHER_AST_EXPR_HPP
-#define MEMGRAPH_CYPHER_AST_EXPR_HPP
+#pragma once
 
 #include "ast_node.hpp"
 
@@ -36,5 +35,3 @@ struct BinaryExpr : public VisitableExpr<Derived>
 };
 
 }
-
-#endif

cypher/ast/identifier.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_CYPHER_AST_AST_IDENTIFIER_HPP
-#define MEMGRAPH_CYPHER_AST_AST_IDENTIFIER_HPP
+#pragma once
 
 #include <string>
 
@@ -15,5 +14,3 @@ struct Identifier : public AstNode<Identifier>
 };
 
 }
-
-#endif

cypher/ast/list.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_CYPHER_AST_LIST_HPP
-#define MEMGRAPH_CYPHER_AST_LIST_HPP
+#pragma once
 
 #include "ast_node.hpp"
 
@@ -17,5 +16,3 @@ struct List : public AstNode<Derived>
 };
 
 }
-
-#endif

cypher/ast/match.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_CYPHER_AST_MATCH_HPP
-#define MEMGRAPH_CYPHER_AST_MATCH_HPP
+#pragma once
 
 #include "ast_node.hpp"
 #include "pattern.hpp"
@@ -18,5 +17,3 @@ struct Match : public AstNode<Match>
 };
 
 }
-
-#endif

cypher/ast/node.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_CYPHER_AST_NODE_HPP
-#define MEMGRAPH_CYPHER_AST_NODE_HPP
+#pragma once
 
 #include "list.hpp"
 #include "identifier.hpp"
@@ -23,5 +22,3 @@ struct Node : public AstNode<Node>
 };
 
 }
-
-#endif

cypher/ast/operators.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_CYPHER_AST_OPERATORS_HPP
-#define MEMGRAPH_CYPHER_AST_OPERATORS_HPP
+#pragma once
 
 #include "expr.hpp"
 
@@ -72,5 +71,3 @@ struct Rem : public BinaryExpr<And>
 };
 
 }
-
-#endif

cypher/ast/pattern.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_CYPHER_AST_PATTERN_HPP
-#define MEMGRAPH_CYPHER_AST_PATTERN_HPP
+#pragma once
 
 #include "ast_node.hpp"
 #include "relationship.hpp"
@@ -19,5 +18,3 @@ struct Pattern : public AstNode<Pattern>
 };
 
 }
-
-#endif

cypher/ast/property.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_CYPHER_AST_AST_PROPERTY_HPP
-#define MEMGRAPH_CYPHER_AST_AST_PROPERTY_HPP
+#pragma once
 
 #include "list.hpp"
 #include "identifier.hpp"
@@ -23,5 +22,3 @@ struct PropertyList : public List<Property, PropertyList>
 };
 
 }
-
-#endif

cypher/ast/queries.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_CYPHER_AST_QUERIES_HPP
-#define MEMGRAPH_CYPHER_AST_QUERIES_HPP
+#pragma once
 
 #include "ast_node.hpp"
 #include "match.hpp"
@@ -28,5 +27,3 @@ struct WriteQuery : public AstNode<WriteQuery>
 };
 
 }
-
-#endif

cypher/ast/relationship.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_CYPHER_AST_RELATIONSHIP_HPP
-#define MEMGRAPH_CYPHER_AST_RELATIONSHIP_HPP
+#pragma once
 
 #include "list.hpp"
 #include "identifier.hpp"
@@ -34,5 +33,3 @@ struct Relationship : public AstNode<Relationship>
 };
 
 }
-
-#endif

cypher/ast/return.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_CYPHER_AST_RETURN_HPP
-#define MEMGRAPH_CYPHER_AST_RETURN_HPP
+#pragma once
 
 #include "list.hpp"
 #include "identifier.hpp"
@@ -21,5 +20,3 @@ struct Return : public AstNode<Return>
 };
 
 };
-
-#endif

cypher/ast/start.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_CYPHER_AST_START_HPP
-#define MEMGRAPH_CYPHER_AST_START_HPP
+#pragma once
 
 #include "ast_node.hpp"
 #include "queries.hpp"
@@ -18,5 +17,3 @@ struct Start : public AstNode<Start>
 };
 
 };
-
-#endif

cypher/ast/tree.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_CYPHER_AST_TREE_HPP
-#define MEMGRAPH_CYPHER_AST_TREE_HPP
+#pragma once
 
 #include <vector>
 
@@ -46,5 +45,3 @@ private:
 };
 
 }
-
-#endif

cypher/ast/values.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_CYPHER_AST_VALUES_HPP
-#define MEMGRAPH_CYPHER_AST_VALUES_HPP
+#pragma once
 
 #include <string>
 
@@ -29,5 +28,3 @@ struct String : public LeafExpr<std::string, String>
 };
 
 }
-
-#endif

cypher/ast/where.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_CYPHER_AST_WHERE_HPP
-#define MEMGRAPH_CYPHER_AST_WHERE_HPP
+#pragma once
 
 #include "ast_node.hpp"
 #include "expr.hpp"
@@ -16,5 +15,3 @@ struct Where : public AstNode<Where>
 };
 
 }
-
-#endif

cypher/codegen/cppgen.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_CYPHER_CODEGEN_CPPGEN_HPP
-#define MEMGRAPH_CYPHER_CODEGEN_CPPGEN_HPP
+#pragma once
 
 #include <iostream>
 #include <typeinfo>
@@ -52,5 +51,3 @@ public:
         create.accept(create_gen);
     };
 };
-
-#endif

cypher/compiler.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_CYPHER_COMPILER_HPP
-#define MEMGRAPH_CYPHER_COMPILER_HPP
+#pragma once
 
 #include "cypher_lexer.hpp"
 #include "parser.hpp"
@@ -25,5 +24,3 @@ private:
 };
 
 }
-
-#endif

cypher/cypher_lexer.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_CYPHER_LEXER_CYPHER_LEXER_HPP
-#define MEMGRAPH_CYPHER_LEXER_CYPHER_LEXER_HPP
+#pragma once
 
 #include "cypher.h"
 
@@ -69,5 +68,3 @@ public:
         build();
     }
 };
-
-#endif

cypher/debug/tree_print.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_CYPHER_TREE_PRINT_HPP
-#define MEMGRAPH_CYPHER_TREE_PRINT_HPP
+#pragma once
 
 #include <iostream>
 #include <stack>
@@ -297,5 +296,3 @@ public:
 private:
     Printer printer;
 };
-
-#endif

cypher/errors.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_CYPHER_ERRORS_HPP
-#define MEMGRAPH_CYPHER_ERRORS_HPP
+#pragma once
 
 #include <stdexcept>
 #include "token.hpp"
@@ -22,5 +21,3 @@ class ParserError : public std::runtime_error
 {
     using runtime_error::runtime_error;
 };
-
-#endif

cypher/parser.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_CYPHER_PARSER_HPP
-#define MEMGRAPH_CYPHER_PARSER_HPP
+#pragma once
 
 #include "cypher.h"
 #include "token.hpp"
@@ -49,5 +48,3 @@ private:
 };
 
 }
-
-#endif

cypher/token.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_CYPHER_TOKEN_HPP
-#define MEMGRAPH_CYPHER_TOKEN_HPP
+#pragma once
 
 #include <ostream>
 
@@ -17,5 +16,3 @@ struct Token
                       << ", value = '" << token.value << "'";
     }
 };
-
-#endif

cypher/visitor/traverser.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_CYPHER_VISITOR_TRAVERSER_HPP
-#define MEMGRAPH_CYPHER_VISITOR_TRAVERSER_HPP
+#pragma once
 
 #include "cypher/ast/ast_visitor.hpp"
 #include "cypher/ast/ast.hpp"
@@ -197,5 +196,3 @@ protected:
             node->accept(*this);
     }
 };
-
-#endif

data_structures/bitset/dynamic_bitset.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_DATA_STRUCTURES_BITSET_DYNAMIC_BITSET_HPP
-#define MEMGRAPH_DATA_STRUCTURES_BITSET_DYNAMIC_BITSET_HPP
+#pragma once
 
 #include <cassert>
 #include <atomic>
@@ -152,5 +151,3 @@ private:
 
     std::atomic<Chunk*> head;
 };
-
-#endif

data_structures/kdtree/build.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_DATA_STRUCTURES_KDTREE_BUILD_HPP
-#define MEMGRAPH_DATA_STRUCTURES_KDTREE_BUILD_HPP
+#pragma once
 
 #include <vector>
 #include <algorithm>
@@ -66,5 +65,3 @@ KdNode<T, U>* build(It first, It last)
 }
 
 }
-
-#endif

data_structures/kdtree/kdnode.hpp

@@ -1,5 +1,4 @@
-#ifndef GEOAPI_KDTREE_KDNODE_HPP
-#define GEOAPI_KDTREE_KDNODE_HPP
+#pragma once
 
 #include <memory>
 
@@ -43,6 +42,3 @@ KdNode<T, U>::~KdNode()
 }
 
 }
-
-
-#endif

data_structures/kdtree/kdtree.hpp

@@ -1,5 +1,4 @@
-#ifndef GEOAPI_KDTREE_KDTREE_HPP
-#define GEOAPI_KDTREE_KDTREE_HPP
+#pragma once
 
 #include <vector>
 
@@ -39,5 +38,3 @@ KdTree<T, U>::KdTree(It first, It last)
 }
 
 }
-
-#endif

data_structures/kdtree/math.hpp

@@ -1,5 +1,4 @@
-#ifndef GEOAPI_KDTREE_MATH_HPP
-#define GEOAPI_KDTREE_MATH_HPP
+#pragma once
 
 #include <limits>
 #include <cmath>
@@ -39,5 +38,3 @@ T axial_distance(const Point<T>& a, const Point<T>& b, byte axis)
 
 }
 }
-
-#endif

data_structures/kdtree/nns.hpp

@@ -1,5 +1,4 @@
-#ifndef GEOAPI_KDTREE_NNS_HPP
-#define GEOAPI_KDTREE_NNS_HPP
+#pragma once
 
 #include "math.hpp"
 #include "point.hpp"
@@ -100,5 +99,3 @@ const KdNode<T, U>* nns(const Point<T>& p, const KdNode<T, U>* root)
 }
 
 }
-
-#endif

data_structures/kdtree/point.hpp

@@ -1,5 +1,4 @@
-#ifndef GEOAPI_KDTREE_POINT_HPP
-#define GEOAPI_KDTREE_POINT_HPP
+#pragma once
 
 #include <ostream>
 
@@ -29,5 +28,3 @@ public:
 };
 
 }
-
-#endif

data_structures/list/lockfree_list.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_DATA_STRUCTURES_LIST_LOCKFREE_LIST_HPP
-#define MEMGRAPH_DATA_STRUCTURES_LIST_LOCKFREE_LIST_HPP
+#pragma once
 
 #include <atomic>
 #include <unistd.h>
@@ -242,5 +241,3 @@ bool operator!=(typename List<T, sleep_time>::read_iterator& a,
 }
 
 }
-
-#endif

data_structures/map/hashmap.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_DATA_STRUCTURES_LOCKFREE_HASHMAP_HPP
-#define MEMGRAPH_DATA_STRUCTURES_LOCKFREE_HASHMAP_HPP
+#pragma once
 
 #include <unordered_map>
 
@@ -33,5 +32,3 @@ private:
 };
 
 }
-
-#endif

data_structures/queue/mpsc_queue.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_DATA_STRUCTURES_QUEUE_MPSC_QUEUE_HPP
-#define MEMGRAPH_DATA_STRUCTURES_QUEUE_MPSC_QUEUE_HPP
+#pragma once
 
 #include <atomic>
 #include <memory>
@@ -148,5 +147,3 @@ private:
 };
 
 }
-
-#endif

data_structures/queue/slqueue.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_DATA_STRUCTURES_QUEUE_SLQUEUE_HPP
-#define MEMGRAPH_DATA_STRUCTURES_QUEUE_SLQUEUE_HPP
+#pragma once
 
 #include <queue>
 
@@ -62,5 +61,3 @@ public:
 private:
     std::queue<T> queue;
 };
-
-#endif

data_structures/skiplist/lockfree_skiplist.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_DATA_STRUCTURES_SKIPLIST_LOCKFREE_SKIPLIST_HPP
-#define MEMGRAPH_DATA_STRUCTURES_SKIPLIST_LOCKFREE_SKIPLIST_HPP
+#pragma once
 
 #include <cstdlib>
 #include <atomic>
@@ -57,5 +56,3 @@ public:
 };
 
 }
-
-#endif

data_structures/skiplist/new_height.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_DATA_STRUCTURES_SKIPLIST_NEW_HEIGHT_HPP
-#define MEMGRAPH_DATA_STRUCTURES_SKIPLIST_NEW_HEIGHT_HPP
+#pragma once
 
 #include "utils/random/xorshift.hpp"
 
@@ -21,5 +20,3 @@ size_t new_height(int max_height)
 
     return height;
 }
-
-#endif

data_structures/skiplist/old_skiplist.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_DATA_STRUCTURES_SKIPLIST_SKIPLIST_HPP
-#define MEMGRAPH_DATA_STRUCTURES_SKIPLIST_SKIPLIST_HPP
+#pragma once
 
 #include <algorithm>
 #include <cstdlib>
@@ -252,6 +251,3 @@ public:
     std::atomic<size_t> size_;
     std::atomic<Node*> header;
 };
-
-
-#endif

data_structures/skiplist/skipnode.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_DATA_STRUCTURES_SKIPLIST_SKIPNODE_HPP
-#define MEMGRAPH_DATA_STRUCTURES_SKIPLIST_SKIPNODE_HPP
+#pragma once
 
 #include <cstdlib>
 #include <atomic>
@@ -134,5 +133,3 @@ private:
     // can access anything we want!
     std::atomic<Node*> forward_[0];
 };
-
-#endif

data_structures/sllist.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_DATA_STRUCTURES_SLLIST_HPP
-#define MEMGRAPH_DATA_STRUCTURES_SLLIST_HPP
+#pragma once
 
 #include <list>
 
@@ -36,5 +35,3 @@ private:
     // TODO add removed items to a list for garbage collection
     // std::list<Node*> removed;
 };
-
-#endif

data_structures/slrbtree.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_DATA_STRUCTURES_SLRBTREE_HPP
-#define MEMGRAPH_DATA_STRUCTURES_SLRBTREE_HPP
+#pragma once
 
 #include <map>
 
@@ -13,5 +12,3 @@ public:
 private:
     std::map<K, T> tree;
 };
-
-#endif

data_structures/slstack.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_DATA_STRUCTURES_SPINLOCK_STACK_HPP
-#define MEMGRAPH_DATA_STRUCTURES_SPINLOCK_STACK_HPP
+#pragma once
 
 #include <stack>
 
@@ -31,5 +30,3 @@ public:
 private:
     std::stack<T> stack;
 };
-
-#endif

data_structures/stack/array_stack.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_DATA_STRUCTURES_STACK_ARRAY_STACK_HPP
-#define MEMGRAPH_DATA_STRUCTURES_STACK_ARRAY_STACK_HPP
+#pragma once
 
 template <class T>
 class ArrayStack
@@ -7,5 +6,3 @@ class ArrayStack
 
 private:
 };
-
-#endif

data_structures/union_find/union_find.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_DATA_STRUCTURES_UNION_FIND_UNION_FIND_HPP
-#define MEMGRAPH_DATA_STRUCTURES_UNION_FIND_UNION_FIND_HPP
+#pragma once
 
 #include <memory>
 
@@ -83,5 +82,3 @@ private:
     // array of tree indices
     uintXX_t* parent;
 };
-
-#endif

database/db.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_DATABASE_DB_HPP
-#define MEMGRAPH_DATABASE_DB_HPP
+#pragma once
 
 #include "storage/graph.hpp"
 #include "transactions/engine.hpp"
@@ -13,5 +12,3 @@ public:
     Graph graph;
     tx::Engine tx_engine;
 };
-
-#endif

dc/dynamic_lib.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_DL_DYNAMIC_LIB_HPP
-#define MEMGRAPH_DL_DYNAMIC_LIB_HPP
+#pragma once
 
 #include <string>
 #include <stdexcept>
@@ -61,5 +60,3 @@ private:
         }
     }
 };
-
-#endif

dc/example/db.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_DL_EXAMPLE_DB_HPP
-#define MEMGRAPH_DL_EXAMPLE_DB_HPP
+#pragma once
 
 #include <iostream>
 
@@ -21,5 +20,3 @@ public:
 
 typedef db* (*produce_t)();
 typedef void (*destruct_t)(db*);
-
-#endif

debug/log.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_DEBUG_LOG_HPP
-#define MEMGRAPH_DEBUG_LOG_HPP
+#pragma once
 
 #include <sstream>
 #include <iostream>
@@ -131,5 +130,3 @@ std::array<std::string, 4> Log::level_strings {{
 #else
 #  define LOG_DEBUG(_MESSAGE_) LOG(Log::Level::Debug, _MESSAGE_)
 #endif
-
-#endif

io/uv/blockbuffer.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_IO_UV_BLOCKBUFFER_HPP
-#define MEMGRAPH_IO_UV_BLOCKBUFFER_HPP
+#pragma once
 
 #include <cstring>
 #include <uv.h>
@@ -124,5 +123,3 @@ template <size_t block_size>
 BlockAllocator<block_size> BlockBuffer<block_size>::allocator;
 
 }
-
-#endif

io/uv/core.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_SERVER_UV_CORE_HPP
-#define MEMGRAPH_SERVER_UV_CORE_HPP
+#pragma once
 
 #include <uv.h>
 
@@ -9,5 +8,3 @@ namespace uv
 using callback_t = void (*)(uv_handle_t *);
 
 }
-
-#endif

io/uv/tcpstream.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_SERVER_UV_TCPSTREAM_HPP
-#define MEMGRAPH_SERVER_UV_TCPSTREAM_HPP
+#pragma once
 
 #include <uv.h>
 
@@ -31,5 +30,3 @@ private:
 };
 
 }
-
-#endif

io/uv/tcpstream.inl

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_SERVER_UV_TCPSTREAM_INL
-#define MEMGRAPH_SERVER_UV_TCPSTREAM_INL
+#pragma once
 
 #include "tcpstream.hpp"
 
@@ -44,5 +43,3 @@ TcpStream::operator uv_handle_t*()
 }
 
 }
-
-#endif

io/uv/uv_error.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_SERVER_UV_UV_ERROR_HPP
-#define MEMGRAPH_SERVER_UV_UV_ERROR_HPP
+#pragma once
 
 #include <stdexcept>
 #include <string>
@@ -15,5 +14,3 @@ public:
 };
 
 }
-
-#endif

io/uv/uvbuffer.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_SERVER_UV_UVBUFFER_HPP
-#define MEMGRAPH_SERVER_UV_UVBUFFER_HPP
+#pragma once
 
 #include <string>
 #include <uv.h>
@@ -34,5 +33,3 @@ private:
 };
 
 }
-
-#endif

io/uv/uvbuffer.inl

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_SERVER_UV_UVBUFFER_INL
-#define MEMGRAPH_SERVER_UV_UVBUFFER_INL
+#pragma once
 
 #include <cstdlib>
 #include <cstring>
@@ -91,5 +90,3 @@ UvBuffer::operator uv_buf_t*()
 }
 
 }
-
-#endif

io/uv/uvloop.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_SERVER_UV_UVLOOP_HPP
-#define MEMGRAPH_SERVER_UV_UVLOOP_HPP
+#pragma once
 
 #include <memory>
 #include <uv.h>
@@ -58,5 +57,3 @@ private:
 };
 
 }
-
-#endif

memory/hp.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_MEMORY_HP_HPP
-#define MEMGRAPH_MEMORY_HP_HPP
+#pragma once
 
 #include <atomic>
 #include <cassert>
@@ -147,5 +146,3 @@ private:
 };
 
 }
-
-#endif

memory/literals.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_MEMORY_LITERALS_HPP
-#define MEMGRAPH_MEMORY_LITERALS_HPP
+#pragma once
 
 #include <cstdint>
 
@@ -25,5 +24,3 @@ constexpr unsigned long long operator"" _kB(unsigned long long kb)
 
 }
 }
-
-#endif

memory/memory.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_MEMORY_MEMORY_HPP
-#define MEMGRAPH_MEMORY_MEMORY_HPP
+#pragma once
 
 #include <atomic>
 #include <mutex>
@@ -54,5 +53,3 @@ private:
 
     SpinLock lock;
 };
-
-#endif

mvcc/hints.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_MVCC_HINTS_HPP
-#define MEMGRAPH_MVCC_HINTS_HPP
+#pragma once
 
 #include <atomic>
 #include <unistd.h>
@@ -110,5 +109,3 @@ public:
 };
 
 }
-
-#endif

mvcc/mvcc_error.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_MVCC_MVCC_ERROR_HPP
-#define MEMGRAPH_MVCC_MVCC_ERROR_HPP
+#pragma once
 
 #include <stdexcept>
 
@@ -13,5 +12,3 @@ public:
 };
 
 }
-
-#endif

mvcc/store.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_STORAGE_MVCC_STORE_HPP
-#define MEMGRAPH_STORAGE_MVCC_STORE_HPP
+#pragma once
 
 #include "transactions/transaction.hpp"
 #include "mvcc/atom.hpp"
@@ -97,5 +96,3 @@ private:
 };
 
 }
-
-#endif

mvcc/version.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_MVCC_VERSION_HPP
-#define MEMGRAPH_MVCC_VERSION_HPP
+#pragma once
 
 #include <atomic>
 
@@ -40,5 +39,3 @@ private:
 };
 
 }
-
-#endif

speedy/middleware.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_SPEEDY_MIDDLEWARE_HPP
-#define MEMGRAPH_SPEEDY_MIDDLEWARE_HPP
+#pragma once
 
 #include "request.hpp"
 #include "response.hpp"
@@ -31,5 +30,3 @@ private:
 };
 
 }
-
-#endif

speedy/r3.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_SPEEDY_R3_HPP
-#define MEMGRAPH_SPEEDY_R3_HPP
+#pragma once
 
 #include <list>
 #include <cassert>
@@ -144,5 +143,3 @@ private:
 };
 
 }
-
-#endif

speedy/rapidjson_middleware.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_SPEEDY_RAPIDJSON_MIDDLEWARE_HPP
-#define MEMGRAPH_SPEEDY_RAPIDJSON_MIDDLEWARE_HPP
+#pragma once
 
 #include <iostream>
 
@@ -33,5 +32,3 @@ bool rapidjson_middleware(sp::Request& req, sp::Response& res)
 }
 
 }
-
-#endif

speedy/request.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_SPEEDY_REQUEST_HPP
-#define MEMGRAPH_SPEEDY_REQUEST_HPP
+#pragma once
 
 #include <vector>
 #include "rapidjson/document.h"
@@ -21,5 +20,3 @@ public:
 };
 
 }
-
-#endif

speedy/response.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_SPEEDY_RESPONSE_HPP
-#define MEMGRAPH_SPEEDY_RESPONSE_HPP
+#pragma once
 
 #include "request.hpp"
 #include "http/response.hpp"
@@ -34,5 +33,3 @@ public:
 using request_cb_t = std::function<void(Request&, Response&)>;
 
 }
-
-#endif

speedy/speedy.hpp

@@ -7,8 +7,7 @@
  *  @author Dominik Tomicevic (domko)
  *  @author Marko Budiselic (buda)
  */
-#ifndef MEMGRAPH_SPEEDY_SPEEDY_HPP
-#define MEMGRAPH_SPEEDY_SPEEDY_HPP
+#pragma once
 
 #include "io/uv/uv.hpp"
 #include "http/http.hpp"
@@ -121,5 +120,3 @@ private:
 };
 
 }
-
-#endif

storage/graph.hpp

@@ -17,46 +17,13 @@ class Graph
 public:
     Graph() {}
 
-    mvcc::Atom<Edge>* connect(mvcc::Atom<Vertex>& atom_a, Vertex& a,
-                              mvcc::Atom<Vertex>& atom_b, Vertex& b,
-                              const tx::Transaction& t)
-    {
-        // try to lock A
-        auto guard_a = atom_a.acquire_unique();
+    // TODO: connect method
+    // procedure:
+    //     1. acquire unique over first node
+    //     2. acquire unique over second node
+    //     3. add edge
     
-        if(a.tx.max())
-            throw mvcc::MvccError("can't serialize due to\
-                concurrent operation(s)");
-
-        auto guard_b = atom_b.acquire_unique();
-
-        if(b.tx.max())
-            throw mvcc::MvccError("can't serialize due to\
-                concurrent operation(s)");
-
-         return edges.insert(t);
-    }
-
-    // TODO: this should probably return mvcc::Atom<Vertex>*
-    Vertex* find_vertex(const Id& id)
-    {
-        // get atom iterator
-        auto atom_it = vertices.begin();
-        
-        // find the right atom
-        // TODO: better implementation
-        while (true) {
-            if (id == atom_it->id) {
-                // TODO: return latest version
-                return atom_it->first();
-            }
-            if (!atom_it.has_next())
-                break;
-            ++atom_it;
-        }
-
-        return nullptr;
-    }
+    // TODO: find vertex by Id
 
     VertexStore vertices;
     EdgeStore edges;

storage/model/json/all.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_DATA_MODEL_JSON_ALL_HPP
-#define MEMGRAPH_DATA_MODEL_JSON_ALL_HPP
+#pragma once
 
 #include "array.hpp"
 #include "bool.hpp"
@@ -10,5 +9,3 @@
 #include "primitive.hpp"
 #include "real.hpp"
 #include "string.hpp"
-
-#endif

storage/model/json/array.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_DATA_MODEL_JSON_ARRAY_HPP
-#define MEMGRAPH_DATA_MODEL_JSON_ARRAY_HPP
+#pragma once
 
 #include <cassert>
 #include <memory>
@@ -80,5 +79,3 @@ Array::operator std::string() const
 }
 
 }  
-
-#endif  

storage/model/json/bool.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_DATA_MODEL_JSON_BOOL_HPP
-#define MEMGRAPH_DATA_MODEL_JSON_BOOL_HPP
+#pragma once
 
 #include "primitive.hpp"
 
@@ -29,5 +28,3 @@ Bool::operator std::string() const
 }
 
 }
-
-#endif

storage/model/json/integral.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_DATA_MODEL_JSON_INTEGRAL_HPP
-#define MEMGRAPH_DATA_MODEL_JSON_INTEGRAL_HPP
+#pragma once
 
 #include "primitive.hpp"
 
@@ -29,5 +28,3 @@ Integral::operator std::string() const
 }
 
 }
-
-#endif

storage/model/json/json.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_DATA_MODEL_JSON_JSON_HPP
-#define MEMGRAPH_DATA_MODEL_JSON_JSON_HPP
+#pragma once
 
 #include <initializer_list>
 #include <string>
@@ -43,5 +42,3 @@ const T& Json::as() const
 }
 
 }
-
-#endif

storage/model/json/null.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_DATA_MODEL_JSON_NULL_HPP
-#define MEMGRAPH_DATA_MODEL_JSON_NULL_HPP
+#pragma once
 
 #include "json.hpp"
 
@@ -26,5 +25,3 @@ Null::operator std::string() const
 }
     
 }
-
-#endif

storage/model/json/object.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_DATA_MODEL_JSON_OBJECT_HPP
-#define MEMGRAPH_DATA_MODEL_JSON_OBJECT_HPP
+#pragma once
 
 #include <iostream>
 
@@ -102,5 +101,3 @@ Object::operator std::string() const
 }
 
 }
-
-#endif

storage/model/json/primitive.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_DATA_MODEL_JSON_PRIMITIVE_HPP
-#define MEMGRAPH_DATA_MODEL_JSON_PRIMITIVE_HPP
+#pragma once
 
 #include "json.hpp"
 
@@ -25,5 +24,3 @@ protected:
 
 
 }
-
-#endif

storage/model/json/real.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_DATA_MODEL_JSON_REAL_HPP
-#define MEMGRAPH_DATA_MODEL_JSON_REAL_HPP
+#pragma once
 
 #include "primitive.hpp"
 
@@ -29,5 +28,3 @@ Real::operator std::string() const
 }
 
 }
-
-#endif

storage/model/json/string.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_DATA_MODEL_JSON_STRING_HPP
-#define MEMGRAPH_DATA_MODEL_JSON_STRING_HPP
+#pragma once
 
 #include "primitive.hpp"
 
@@ -30,5 +29,3 @@ String::operator std::string() const
 }
 
 }
-
-#endif

storage/model/properties/property.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_STORAGE_MODEL_PROPERTIES_PROPERTY_HPP
-#define MEMGRAPH_STORAGE_MODEL_PROPERTIES_PROPERTY_HPP
+#pragma once
 
 #include <memory>
 #include <string>
@@ -155,5 +154,3 @@ void Property::accept(Handler& h)
         default: return;
     }
 }
-
-#endif

storage/model/record.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_STORAGE_RECORD_HPP
-#define MEMGRAPH_STORAGE_RECORD_HPP
+#pragma once
 
 #include <ostream>
 #include <mutex>
@@ -23,5 +22,3 @@ public:
     // each record can have one or more distinct labels.
     // std::set<uint16_t> labels;
 };
-
-#endif

threading/pool.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_THREADING_POOL_HPP
-#define MEMGRAPH_THREADING_POOL_HPP
+#pragma once
 
 #include <mutex>
 #include <atomic>
@@ -77,5 +76,3 @@ private:
         }
     }
 };
-
-#endif

threading/sync/caslock.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_UTILS_SYNC_CASLOCK_HPP
-#define MEMGRAPH_UTILS_SYNC_CASLOCK_HPP
+#pragma once
 
 #include <atomic>
 #include <unistd.h>
@@ -33,5 +32,3 @@ public:
 private:
     std::atomic<bool> lock_flag;
 };
-
-#endif

threading/sync/lockable.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_SYNC_LOCKABLE_HPP
-#define MEMGRAPH_SYNC_LOCKABLE_HPP
+#pragma once
 
 #include <mutex>
 #include "spinlock.hpp"
@@ -22,5 +21,3 @@ public:
 
     mutable lock_t lock;
 };
-
-#endif

threading/sync/spinlock.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_THREADING_SYNC_SPINLOCK_HPP
-#define MEMGRAPH_THREADING_SYNC_SPINLOCK_HPP
+#pragma once
 
 #include <atomic>
 #include <unistd.h>
@@ -23,5 +22,3 @@ private:
     // guaranteed by standard to be lock free!
     std::atomic_flag lock_flag = ATOMIC_FLAG_INIT;
 };
-
-#endif

threading/sync/timed_spinlock.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_THREADING_SYNC_TIMED_SPINLOCK_HPP
-#define MEMGRAPH_THREADING_SYNC_TIMED_SPINLOCK_HPP
+#pragma onces
 
 #include <atomic>
 #include <chrono>
@@ -52,5 +51,3 @@ private:
     // guaranteed by standard to be lock free!
     std::atomic_flag lock_flag = ATOMIC_FLAG_INIT;
 };
-
-#endif

threading/task.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_THREADING_TASK_HPP
-#define MEMGRAPH_THREADING_TASK_HPP
+#pragma once
 
 #include <iostream>
 
@@ -79,5 +78,3 @@ private:
     uv::UvLoop::sptr loop;
     Pool::sptr pool;
 };
-
-#endif

transactions/commit_log.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_TRANSACTIONS_COMMIT_LOG_HPP
-#define MEMGRAPH_TRANSACTIONS_COMMIT_LOG_HPP
+#pragma once
 
 #include "mvcc/id.hpp"
 #include "data_structures/bitset/dynamic_bitset.hpp"
@@ -89,5 +88,3 @@ private:
 };
 
 }
-
-#endif

utils/auto_scope.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_UTILS_AUTO_SCOPE_HPP
-#define MEMGRAPH_UTILS_AUTO_SCOPE_HPP
+#pragma once
 
 #include <utility>
 
@@ -56,5 +55,3 @@ private:
             TOKEN_PASTE(auto_, counter)(TOKEN_PASTE(auto_func_, counter));
 
 #define Auto(Destructor) Auto_INTERNAL(Destructor, __COUNTER__)
-
-#endif

utils/bash_colors.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_UTILS_BASH_COLORS_HPP
-#define MEMGRAPH_UTILS_BASH_COLORS_HPP
+#pragma once
 
 namespace bash_color
 {
@@ -9,5 +8,3 @@ namespace bash_color
     auto red    = "\033[91m";
     auto end    = "\033[0m";
 }
-
-#endif

utils/buffer.hpp

@@ -1,5 +1,4 @@
-#ifndef MEMGRAPH_UTILS_STRING_BUFFER_HPP
-#define MEMGRAPH_UTILS_STRING_BUFFER_HPP
+#pragma once
 
 #include <string>
 
@@ -43,5 +42,3 @@ private:
     size_t size_, capacity, chunk_size;
     char* data;
 };
-
-#endif