Add api_version gloabal variable to profiles

Currently only `0` is supported (the default).

include/extractor/scripting_environment_lua.hpp

@@ -30,6 +30,8 @@ struct LuaScriptingContext final
     bool has_node_function;
     bool has_way_function;
     bool has_segment_function;
+
+    int api_version;
 };
 
 /**
@@ -42,6 +44,9 @@ struct LuaScriptingContext final
 class Sol2ScriptingEnvironment final : public ScriptingEnvironment
 {
   public:
+    static const constexpr int SUPPORTED_MIN_API_VERSION = 0;
+    static const constexpr int SUPPORTED_MAX_API_VERSION = 0;
+
     explicit Sol2ScriptingEnvironment(const std::string &file_name);
     ~Sol2ScriptingEnvironment() override = default;
 

profiles/bicycle.lua

@@ -1,3 +1,5 @@
+api_version = 0
+
 -- Bicycle profile
 
 local find_access_tag = require("lib/access").find_access_tag

profiles/car.lua

@@ -1,3 +1,5 @@
+api_version = 0
+
 -- Car profile
 local find_access_tag = require("lib/access").find_access_tag
 local get_destination = require("lib/destination").get_destination

profiles/foot.lua

@@ -1,3 +1,4 @@
+api_version = 0
 -- Foot profile
 
 local find_access_tag = require("lib/access").find_access_tag

profiles/rasterbot.lua

@@ -1,3 +1,4 @@
+api_version = 0
 -- Rasterbot profile
 
 -- Minimalist node_ and way_functions in order to test source_ and segment_functions

profiles/rasterbotinterp.lua

@@ -1,3 +1,4 @@
+api_version = 0
 -- Rasterbot profile
 
 -- Minimalist node_ and way_functions in order to test source_ and segment_functions

profiles/testbot.lua

@@ -1,3 +1,4 @@
+api_version = 0
 -- Testbot profile
 
 -- Moves at fixed, well-known speeds, practical for testing speed and travel times:

profiles/turnbot.lua

@@ -1,3 +1,5 @@
+api_version = 0
+
 -- Testbot, with turn penalty
 -- Used for testing turn penalties
 

src/extractor/scripting_environment_lua.cpp

@@ -306,6 +306,20 @@ void Sol2ScriptingEnvironment::InitContext(LuaScriptingContext &context)
     context.has_node_function = node_function.valid();
     context.has_way_function = way_function.valid();
     context.has_segment_function = segment_function.valid();
+    auto maybe_version = context.state.get<sol::optional<int>>("api_version");
+    if (maybe_version)
+     {
+         context.api_version = *maybe_version;
+     }
+
+    if (context.api_version < SUPPORTED_MIN_API_VERSION ||
+        context.api_version > SUPPORTED_MAX_API_VERSION )
+    {
+        throw util::exception("Invalid profile API version " + std::to_string(context.api_version) +
+                              " only versions from " + std::to_string(SUPPORTED_MIN_API_VERSION) +
+                              " to " + std::to_string(SUPPORTED_MAX_API_VERSION) +
+                              " are supported." + SOURCE_REF);
+    }
 }
 
 const ProfileProperties &Sol2ScriptingEnvironment::GetProfileProperties()