cypher_quries are moved to the tests folder and another part of CMakeLists file is written

CMakeLists.txt

@@ -8,7 +8,60 @@ string(REPLACE " " "_" ProjectId ${ProjectId})
 # set project name
 project(${ProjectId})
 
-INCLUDE(ExternalProject)
+# external dependencies
+
+include(ExternalProject)
+set(libs_dir "${CMAKE_SOURCE_DIR}/libs")
+
+# lemon
+set(lemon_dir "${libs_dir}/lemon")
+set(lemon_tag "f38a55106d79b7a4c063abb958517d6c47dc6ac7")
+set(lemon_url "http://www.sqlite.org/src/raw/tool/lemon.c?name=${lemon_tag}")
+ExternalProject_Add(
+    lemon
+    DOWNLOAD_COMMAND wget ${lemon_url} -O lemon.c
+    DOWNLOAD_DIR ${lemon_dir}
+    SOURCE_DIR ${lemon_dir}
+    BINARY_DIR ${lemon_dir}
+	CONFIGURE_COMMAND ""
+    BUILD_COMMAND clang lemon.c -o lemon -O2
+    INSTALL_COMMAND ""
+    TEST_COMMAND ""
+)
+
+# lempar
+set(lempar_dir "${libs_dir}/lemon")
+set(lempar_tag "404ea3dc27dbeed343f0e61b1d36e97b9f5f0fb6")
+set(lempar_url "http://www.sqlite.org/src/raw/tool/lempar.c?name=${lempar_tag}")
+ExternalProject_Add(
+    lempar
+    DOWNLOAD_COMMAND wget ${lempar_url} -O lempar.c
+    DOWNLOAD_DIR ${lempar_dir}
+    SOURCE_DIR ${lempar_dir}
+    BINARY_DIR ${lempar_dir}
+	CONFIGURE_COMMAND ""
+    BUILD_COMMAND ""
+    INSTALL_COMMAND ""
+    TEST_COMMAND ""
+)
+
+# build memgraph's cypher grammer
+FILE(COPY ${CMAKE_SOURCE_DIR}/src/cypher/cypher.y DESTINATION ${CMAKE_BINARY_DIR})
+EXECUTE_PROCESS(
+    COMMAND ${lemon_dir}/lemon ${CMAKE_BINARY_DIR}/cypher.y -s
+    WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
+)
+FILE(RENAME ${CMAKE_BINARY_DIR}/cypher.c ${CMAKE_BINARY_DIR}/cypher.cpp)
+
+# lexertl
+ExternalProject_Add(
+    lexertl
+    GIT_REPOSITORY "https://github.com/BenHanson/lexertl.git"
+    GIT_TAG "7d4d36a357027df0e817453cc9cf948f71047ca9"
+    SOURCE_DIR "${libs_dir}/lexertl"
+    TEST_COMMAND ""
+    INSTALL_COMMAND ""
+)
 
 # compiler options
 SET(COMPILE_OPTIONS "-O0 -g3 -Wall -Werror -fmessage-length=0")

tests/CMakeLists.txt

@@ -28,9 +28,13 @@ foreach(test_file ${test_files})
 endforeach()
 MESSAGE(STATUS "Available tests are: ${tests}")
 
+# copy test data
+file(COPY ${CMAKE_SOURCE_DIR}/tests/data DESTINATION ${CMAKE_BINARY_DIR}/tests)
+
 # build tests
 foreach(test ${tests})
     add_executable(${test} ${test}.cpp)
+    target_link_libraries(${test} stdc++fs)
     add_test(NAME ${test} COMMAND ${test})
     set_property(TARGET ${test} PROPERTY CXX_STANDARD 14)
 endforeach()

tests/cypher_traversal.cpp

@@ -4,27 +4,46 @@
 #include "cypher/compiler.hpp"
 #include "cypher/debug/tree_print.hpp"
 
+#include <fstream>
+#include <iostream>
+#include <iterator>
+#include <iterator>
+#include <vector>
+#include <experimental/filesystem>
+
+namespace fs = std::experimental::filesystem;
+
 using std::cout;
 using std::endl;
 
-int calc(int i)
+std::vector<std::string> load_queries()
 {
-    return i + 1;
+    std::vector<std::string> queries;
+    fs::path queries_path = "data/cypher_queries";
+    for (auto& directory_entry :
+            fs::recursive_directory_iterator(queries_path)) {
+        if (!fs::is_regular_file(directory_entry))
+            continue;
+		std::ifstream infile(directory_entry.path().c_str());
+		if (infile) {
+			std::string file_text((std::istreambuf_iterator<char>(infile)),
+                                  std::istreambuf_iterator<char>());
+            queries.emplace_back(file_text);
+        }
+    }
+    return queries;
 }
 
 int main()
 {
-    // TODO
-    // auto print_visitor = new PrintVisitor(cout);
+    auto queries = load_queries();
 
-    // // create AST
-    // cypher::Compiler compiler;
-    // auto tree = compiler.syntax_tree("MATCH (n) DELETE n");
-
-    // // traverser the tree
-    // tree.root->accept(*print_visitor);
-    //
-    assert(calc(0) == 1);
+    for (auto& query : queries) {
+        auto print_visitor = new PrintVisitor(cout);
+        cypher::Compiler compiler;
+        auto tree = compiler.syntax_tree(query);
+        tree.root->accept(*print_visitor);
+    } 
 
     return 0;
 }