rename tests -> examples (#18)

examples/complex/CMakeLists.txt

@@ -0,0 +1,55 @@
+cmake_minimum_required(VERSION 3.5 FATAL_ERROR)
+
+project(CPMTest)
+
+include(${CMAKE_CURRENT_SOURCE_DIR}/../../cmake/CPM.cmake)
+
+# ignore locally installed projects for reproducable builds
+set(CPM_REMOTE_PACKAGES_ONLY ON CACHE INTERNAL "")
+
+# util library
+CPMAddPackage(
+  NAME LHC
+  GIT_REPOSITORY https://github.com/TheLartians/LHC.git
+  VERSION 0.7
+)
+
+# adding LHC again will be ignored as the package has already been added
+CPMAddPackage(
+  NAME LHC
+  GIT_REPOSITORY https://github.com/TheLartians/LHC.git
+  VERSION 0.1
+)
+
+# language bindings
+# uses git tag instead of version identifier
+# depends on visitor library that depends on Event library and LHC (ignored as already added)
+# configuration arguments passed via OPTIONS. these will all be set internally
+set(GLUE_ENABLE_LUA ON)
+CPMAddPackage(
+  NAME Glue
+  GIT_TAG 78af65625751ad15a42ca52b842863e85b5d2adc
+  GIT_REPOSITORY https://github.com/TheLartians/Glue.git
+  OPTIONS 
+    "GLUE_ENABLE_LUA ON"
+    "GLUE_BUILD_LUA ON"
+)
+
+# parser library 
+# depends on LHC (ignored as already added)
+CPMAddPackage(
+  NAME LarsParser
+  GIT_REPOSITORY https://github.com/TheLartians/Parser.git
+  VERSION 1.8
+  OPTIONS 
+    "LARS_PARSER_BUILD_GLUE_EXTENSION ON"
+)
+
+# add executable
+set (CMAKE_CXX_STANDARD 17)
+add_executable(cpm-test test.cpp)
+target_link_libraries(cpm-test LHC LarsParser Glue)
+
+# tests
+enable_testing()
+add_test(cpm-test cpm-test)

examples/complex/test.cpp

@@ -0,0 +1,52 @@
+#include <lars/parser/extension.h>
+#include <lars/lua_glue.h>
+#include <stdexcept>
+
+int main() {
+  // create lua state
+  auto lua = lars::LuaState();
+  lua.open_libs();
+
+  // create extensions
+  lars::Extension extensions;
+
+  // add parser library to extension
+  extensions.add_extension("parser", lars::extensions::parser());
+
+  // connect parser extension to lua
+  extensions.connect(lua.get_glue());
+
+  // create a parser
+  lua.run(R"(
+    NumberMap = parser.Program.create()
+
+    NumberMap:setRule("Whitespace", "[ \t]")
+    NumberMap:setSeparatorRule("Whitespace")
+
+    NumberMap:setRuleWithCallback("Object", "'{' KeyValue (',' KeyValue)* '}'",function(e) 
+      local N = e:size()-1
+      local res = {}
+      for i=0,N do 
+        local a = e:get(i)
+        res[a:get(0):evaluate()] = a:get(1):evaluate() 
+      end
+      return res
+    end)
+
+    NumberMap:setRule("KeyValue", "Number ':' Number")
+
+    NumberMap:setRuleWithCallback("Number", "'-'? [0-9]+", function(e) return tonumber(e:string()); end)
+    
+    NumberMap:setStartRule("Object")
+  )");
+
+  // parse a string
+  lua.run("m = NumberMap:run('{1:3, 2:-1, 3:42}')");
+  
+  // check result
+  if (lua.get_numeric("m[1]") != 3) throw std::runtime_error("unexpected result");
+  if (lua.get_numeric("m[2]") != -1) throw std::runtime_error("unexpected result");
+  if (lua.get_numeric("m[3]") != 42) throw std::runtime_error("unexpected result");
+
+  return 0;
+}