Does erlang-ls support go-to-definition for variables?
Going to definition seems to work for functions and modules, but Coc.vim says "provider not found" when I gd on a variable name. Cmd-clicking a variable name doesn't do anything in VSCode, either.
What I tried:
erlang-ls docs and issues
Peeking through the source, I see that els_code_navigation matches on poi_kind. The relevant poi_kind would be variable, but "variable" doesn't appear in els_code_navigation.
There is currently no support in erlang_ls for jumping to the definition of a variable.
If this is something that you would like implemented please open a feature request in the erlang_ls GitHub project.
Related
I am developing an app using Angular 2 and Ionic. I am using a bluetooth library for Cordova, so not writing using ES6-modules and exports.
The library defines a global variable called 'bluetoothle', and it works as expected when I run it. However, I get a lot of complaints from the typescript compiler. I would like to either:
(Preferred) Have some better way to import the ES5-library to my typescript-project.
Tell the compiler to ignore this error.
Declare the variable, and then let the library assign value to it(however, I don't know how to declare globals in typescript the way it was possible in ES6.
Thanks in advance,
Markus
You have two options there which depend on how much work you want to put in them.
The first and easy option is to just declare the variable at the top. This will tell TypeScript that this is a variable of type any and that it doesn't need to care about where it came from or which members it has:
declare var bluetoothle;
The other route, which would be cleaner but is way more work is writing a type definition file.
I have a script which saves some files at a given location. It works fine but when I send this code to someone else, he has to change the paths in the code. It's not comfortable for someone who does not know what is in that code and for me to explain every time where and how the code should be changed.
I want to get this path in a variable which will be taken from the configuration file. So it will be easier for everyone to change just this config file and nothing in my code. But I have never done this before and could not find any information on how I can do this in the internet.
PS: I do not have any code and I ask about an ultimate solution but it is really difficult to find something good in the internet about dxl, especially since I'm new with that. Maybe someone of you already does that or has an idea how it could be done?
DXL has a perm to read the complete context of a file into a variable: string readFile (string) (or Buffer readFile (string))
you can split the output by \n and then use regular expressions to find all lines that match the pattern
^\s*([^;#].*)\s*=\s*(.*)\s*$
(i.e. key = value - where comment lines start with ; or #)
But in DOORS I prefer using DOORS modules as configuration modules. Object Heading can be the key, Object Text can be the value.
Hardcode the full name of the configuration module into your DXL file and the user can modify the behaviour of the application.
The advantage over a file is that you need not make assumptions on where the config file is to be stored on the file system.
It really depends on your situation. You are going to need to be a little more specific about what you mean by "they need to change the paths in the code". What are these paths to? Are they DOORS module paths, are they paths to local/network files, or are the something else entirely?
Like user3329561 said, you COULD use a DOORS module as a configuration file. I wouldn't recommend it though, simply because that is not what DOORS modules were designed for. DOORS is fully capable of reading system files in one line at a time as well as all at once, but I can't recommend that option either until I know what types of paths you want to load and why.
I suspect that there is a better solution for your problem that will present itself once more information is provided.
I had the same problem, I needed to specify the path of my configuration file used in my dxl script.
I solved this issue passing the directory path as a parameter to DOORS.exe as follow:
"...\DOORS\9.3\bin\doors.exe" -dxl "string myVar = \"Hello Word\"
then in my dxl script, the variable myVar is a global variable.
I am trying to display some Images which are in my local folder. I am getting the image name from a server through JSON. Based on that, I am constructing the Image path dynamically. However, the final image path will be changed by SC build tools. I know that we can use sc_static() in css or view's specifications to map it to the final path. How can I achieve that mapping (to final path from local path) while programmatically constructing my url.
Any ideas, suggestions and thoughts?
sc_static is not a javascript function, but rather a convention used to tell Abbot (Sproutcore's build tool, written in ruby) to replace it at runtime with a path pointing to the resource passed as first argument to sc_static.
Note that this substitution is done by Abbot when the page is refreshed (in dev mode) or when the app is built (in prod mode). It is not a js function at all (use Chrome inspector to see it by yourself).
If you want to use sc_static in JS you can define all resource references as such:
YourApp.loadingIcon=sc_static('loading.png');
YourApp.greenIcon=sc_static('green.png');
and then reference the
YourApp.loadingIcon , YourApp.greenIcon
variables in your code.
Finally I found the answer with the help of my friends. sc_static is not javascript function it is a function targeted for build tools(Abbot) of Sproutcore to replace the actual production path after build. Hence we can not use sc_static in programming.
If we want similar function we have develop our own.
I'm trying to follow the instructions for deploying a database via TFS build listed here:
http://www.mytechfinds.com/articles/software-testing/6-test-automation/64-db-deployment-tfs
The instructions include notes about how to configure a ConvertWorkspaceItem element. I've followed the directions, but TFS remains unhappy with my setting for 'Result' and 'Workspace'. For now, I simply entered the text from the directions ('dbproj' and 'Workspace', respectively). TFS complains about my values:
Compiler error(s) encountered processing expression "dbproj". 'dbproj' is not declared. It may be inaccessible due to its production level.
I'm trying to find basic tutorial information on the ConvertWorkspaceItem element, but other than the MSDN reference page there isn't a lot of info. Does anyone know much about configuring this element?
You need to specify valid variable names for both of these properties. there should already be a variable declared in the workflow called workspace, You will need to declare a variable of type string that you wish to receive the result of this activity and specify it's name as the Result property. It looks like in your linked article the author must have already created a variable called dbproj. At the bottom of the workflow designer is a variables tab where you can define your own variables.
I'm using a closed-source application that loads Lua scripts and allows some customization through modifying these scripts. Unfortunately that application is not very good at generating useful log output (all I get is 'script failed') if something goes wrong in one of the Lua scripts.
I realize that dynamic languages are pretty much resistant to static code analysis in the way C++ code can be analyzed for example.
I was hoping though, there would be a tool that runs through a Lua script and e.g. warns about variables that have not been defined in the context of a particular script.
Essentially what I'm looking for is a tool that for a script:
local a
print b
would output:
warning: script.lua(1): local 'a' is not used'
warning: script.lua(2): 'b' may not be defined'
It can only really be warnings for most things but that would still be useful! Does such a tool exist? Or maybe a Lua IDE with a feature like that build in?
Thanks, Chris
Automated static code analysis for Lua is not an easy task in general. However, for a limited set of practical problems it is quite doable.
Quick googling for "lua lint" yields these two tools: lua-checker and Lua lint.
You may want to roll your own tool for your specific needs however.
Metalua is one of the most powerful tools for static Lua code analysis. For example, please see metalint, the tool for global variable usage analysis.
Please do not hesitate to post your question on Metalua mailing list. People there are usually very helpful.
There is also lua-inspect, which is based on metalua that was already mentioned. I've integrated it into ZeroBrane Studio IDE, which generates an output very similar to what you'd expect. See this SO answer for details: https://stackoverflow.com/a/11789348/1442917.
For checking globals, see this lua-l posting. Checking locals is harder.
You need to find a parser for lua (should be available as open source) and use it to parse the script into a proper AST tree. Use that tree and a simple variable visibility tracker to find out when a variable is or isn't defined.
Usually the scoping rules are simple:
start with the top AST node and an empty scope
item look at the child statements for that node. Every variable declaration should be added in the current scope.
if a new scope is starting (for example via a { operator) create a new variable scope inheriting the variables in the current scope).
when a scope is ending (for example via } ) remove the current child variable scope and return to the parent.
Iterate carefully.
This will provide you with what variables are visible where inside the AST. You can use this information and if you also inspect the expressions AST nodes (read/write of variables) you can find out your information.
I just started using luacheck and it is excellent!
The first release was from 2015.