This extension adds support for the Erlang language to Visual Studio Code, including editing, building and debugging.
Editing support
Syntax highlighting
Automatic indentation
Erlang IntelliSense
Shows errors and warnings dynamically while you type
Go To Definition/Peek Definition
Hover help for standard functions
Hover for project functions showing head clauses
CodeLens showing exported functions and references
Build
Standard rebar3 is the default build tool, also rebar is supported. The rebar.config file should be placed in the root directory.
Build arguments are configurable, by default "compile" is used
You can override the default in configuration file (i.e. workspace settings)
Debugger
Variables List shows variables from the current scope
Call Stack shows Erlang processes and allows to control them with e.g. Pause and Continue
Standard commands Step Over, Step Into, Step Out supported
Full breakpoints support:
Regular breakpoints
Function Breakpoints: use format module:function/arity
Conditional Breakpoints
Hit-Count Breakpoints
Running debugger
You can provide a specific command line to 'erl' in launch.json configuration file in "arguments" entry.
The modified code may be automatically build before debugger is started. To set automatic build up you need to:
Add to launch.json file the entry "preLaunchTask": "rebar3 compile"
Select Configure Task in the alert, choose Create tasks.json file from template and then Others: Example to run an arbitrary command
This will create tasks.json for you. Change both label and command to "rebar3 compile".
Add entry "problemMatcher": "$erlang"
Then, before debugging is started, modified files will be recompiled automatically.
Available commands
Support for Erlang tools, including rebar3, EUnit and Dialyzer
Dialyzer warnings displayed in Problems tab for easy navigation
Settings
erlang.erlangPath - Directory location of erl/escript
erlang.rebarPath - Directory location of rebar/rebar3
erlang.rebarBuildArgs - Arguments to provide to rebar/rebar3 build command
erlang.includePaths - Include paths are read from rebar.config, and also standard set of paths is used. This setting is for special cases when the default behaviour is not enough
erlang.linting - Enable/disable dynamic validation of opened Erlang source files
erlang.codeLensEnabled - Enable/Disable CodeLens
erlang.verbose - Activate technical traces for use in the extension development
