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2018-11-04elixir-ls now recognizes umbrella projectsJon Parise
Previously, elixir-ls would treat each sub-project within an umbrella as standalone, which isn't desirable from a language server perspective. Added ale#handlers#elixir#FindMixUmbrellaRoot, which locates the current project's root and then continues searching upwards for a potential umbrella project root. This literally looks just two levels up to keep things simple while keeping in line with Elixir project conventions. Use this new function to determine elixir-ls's LSP project root.
2018-10-31Add configuration dictionary support to elixir-lsJon Parise
This adds generic configuration dictionary support to the elixir-ls linter. This is useful for disabling its built-in Dialyzer support, for example, which can improve startup time. The configuration dictionary is a little verbose. I considered reducing the user configuration to only the nested settings dictionary (and having the linter implementation wrap it in the top-level `elixirLS` dictionary), but leaving it fully configurable simplifies the code and removes any assumptions about current or future ElixirLS behavior.
2018-10-31Add a `lsp_config_callback` linter optionJon Parise
This is the callback-based variant of the existing `lsp_config` linter option. It serves the same purpose but can be used when more complicated processing is needed. `lsp_config` and `lsp_config_callback` are mutually exclusive options; if both an given, a linter preprocessing error will be raised. The runtime logic has been wrapped in `ale#lsp_linter#GetConfig` for convenience, similar to `ale#lsp_linter#GetOptions`. This also adds documentation and an `AssertLSPConfig` test function for completeness.
2018-10-11Add elixir-ls language server supportJon Parise
ElixirLS (https://github.com/JakeBecker/elixir-ls) is an LSP server for Elixir. It's distributed as a release package that can be downloaded from https://github.com/JakeBecker/elixir-ls/releases or built locally. The easiest way to start it is via Unix- and Win32-specific helper scripts, so that's the basis of this command integration. Alternatively, we could implement the contents of those platform-specific scripts in the linter's command callback in a language-neutral way, but there isn't any benefit to doing that aside from eliminating the platform check, and that could prove to be too tight of a coupling going forward.