Languages (sclang): Add davidgranstrom/scnvim

scnvim is a Neovim frontend for SuperCollider.
Tracking Issue: jordanisaacs#33

Author: mraethel

docs/release-notes/rl-0.1.adoc

@@ -78,3 +78,7 @@ https://github.com/MonaMayrhofer[MonaMayrhofer]:
 https://github.com/volfyd[volfyd]:
 
 * Add support for https://github.com/ellisonleao/gruvbox.nvim
+
+https://github.com/mraethel[mraethel]:
+
+* Add support for https://github.com/davidgranstrom/scnvim[davidgranstrom/scnvim]

flake.lock

@@ -171,6 +171,10 @@
     plugin-glow-nvim.url = "github:ellisonleao/glow.nvim";
     plugin-glow-nvim.flake = false;
 
+    # SCNvim
+    plugin-scnvim.url = "github:davidgranstrom/scnvim";
+    plugin-scnvim.flake = false;
+
     # Plenary (required by crates-nvim)
     plugin-plenary-nvim.url = "github:nvim-lua/plenary.nvim";
     plugin-plenary-nvim.flake = false;

flake.nix

@@ -19,6 +19,7 @@ in {
     ./markdown.nix
     ./plantuml.nix
     ./tidal.nix
+    ./sclang.nix
     ./html.nix
   ];
 

modules/languages/default.nix

@@ -0,0 +1,171 @@
+{
+  config,
+  lib,
+  ...
+}:
+with lib;
+let
+  cfg = config.vim.languages.sclang;
+in {
+  options.vim.languages.sclang = {
+    enable = mkEnableOption "SuperCollider language support and plugins";
+    postwin = {
+      highlight = mkOption {
+        description = ''Use syntax colored post window output'';
+        type = types.bool;
+        default = true;
+      };
+      auto_toggle_error = mkOption {
+        description = ''Auto-toggle post window on errors'';
+        type = types.bool;
+        default = true;
+      };
+      scrollback = mkOption {
+        description = ''The number of lines to save in the post window history'';
+        type = types.int;
+        default = 5000;
+      };
+      horizontal = mkOption {
+        description = ''Open the post window as a horizontal split'';
+        type = types.bool;
+        default = false;
+      };
+      direction = mkOption {
+        description = ''Direction of the split: top, right, bot, left'';
+        type = types.enum [
+          "top"
+          "right"
+          "bot"
+          "left"
+        ];
+        default = "right";
+      };
+      float = {
+        enable = mkOption {
+          description = ''Use a floating post window'';
+          type = types.bool;
+          default = false;
+        };
+      };
+    };
+    editor = {
+      force_ft_supercollider = mkOption {
+        description = ''Treat .sc files as supercollider. If false, use nvim's native ftdetect'';
+        type = types.bool;
+        default = true;
+      };
+      highlight = {
+        type = mkOption {
+          description = ''Highlight flash type: flash, fade or none'';
+          type = types.enum [
+            "flash"
+            "fade"
+            "none"
+          ];
+          default = "flash";
+        };
+        flash = {
+          duration = mkOption {
+            description = ''The duration of the flash in ms'';
+            type = types.int;
+            default = 100;
+          };
+          repeats = mkOption {
+            description = ''The number of repeats'';
+            type = types.int;
+            default = 2;
+          };
+        };
+        fade = {
+          duration = mkOption {
+            description = ''The duration of the flash in ms'';
+            type = types.int;
+            default = 375;
+          };
+        };
+      };
+      signature = {
+        float = mkOption {
+          description = ''Show function signatures in a floating window'';
+          type = types.bool;
+          default = true;
+        };
+        auto = mkOption {
+          description = ''Show function signatures while typing in insert mode'';
+          type = types.bool;
+          default = true;
+        };
+      };
+    };
+    statusline = {
+      poll_interval = mkOption {
+        description = ''The interval to update the status line widgets in seconds'';
+        type = types.float;
+        default = 1.0;
+      };
+    };
+  };
+
+  config = mkIf (cfg.enable) {
+    vim.startPlugins = [
+      "scnvim"
+    ];
+    vim.luaConfigRC.scnvim = nvim.dag.entryAnywhere ''
+      local scnvim = require 'scnvim'
+      local map = scnvim.map
+      local map_expr = scnvim.map_expr
+
+      scnvim.setup({
+        keymaps = {
+          ['<M-e>'] = map('editor.send_line', {'i', 'n'}),
+          ['<C-e>'] = {
+            map('editor.send_block', {'i', 'n'}),
+            map('editor.send_selection', 'x'),
+          },
+          ['<CR>'] = map('postwin.toggle'),
+          ['<M-CR>'] = map('postwin.toggle', 'i'),
+          ['<M-L>'] = map('postwin.clear', {'n', 'i'}),
+          ['<C-k>'] = map('signature.show', {'n', 'i'}),
+          ['<F12>'] = map('sclang.hard_stop', {'n', 'x', 'i'}),
+          ['<leader>st'] = map('sclang.start'),
+          ['<leader>sk'] = map('sclang.recompile'),
+          ['<F1>'] = map_expr('s.boot'),
+          ['<F2>'] = map_expr('s.meter'),
+        },
+
+        postwin = {
+          highlight = ${boolToString cfg.postwin.highlight},
+          auto_toggle_error = ${boolToString cfg.postwin.auto_toggle_error},
+          scrollback = ${toString cfg.postwin.scrollback},
+          horizontal = ${boolToString cfg.postwin.horizontal},
+          direction = '${cfg.postwin.direction}',
+          float = {
+            enabled = ${boolToString cfg.postwin.float.enable},
+          },
+        },
+
+        editor = {
+          force_ft_supercollider = ${boolToString cfg.editor.force_ft_supercollider},
+          highlight = {
+            type = '${cfg.editor.highlight.type}',
+            flash = {
+              duration = ${toString cfg.editor.highlight.flash.duration},
+              repeats = ${toString cfg.editor.highlight.flash.repeats},
+            },
+            fade = {
+              duration = ${toString cfg.editor.highlight.fade.duration},
+            },
+          },
+          signature = {
+            float = ${boolToString cfg.editor.signature.float},
+            auto = ${boolToString cfg.editor.signature.float},
+          },
+        },
+
+        statusline = {
+          poll_interval = ${strings.floatToString cfg.statusline.poll_interval},
+        }
+      })
+    '';
+  };
+}