feat(ui/config): Add config option to change icons and highlights

Closes #37
Kinda related to #19

lua/symbols-outline/config.lua

@@ -18,13 +18,41 @@ local defaults = {
         rename_symbol = "r",
         code_actions = "a"
     },
-    lsp_blacklist = {}
+    lsp_blacklist = {},
+    symbols = {
+        File = {icon = "", hl = "TSURI"},
+        Module = {icon = "", hl = "TSNamespace"},
+        Namespace = {icon = "", hl = "TSNamespace"},
+        Package = {icon = "", hl = "TSNamespace"},
+        Class = {icon = "𝓒", hl = "TSType"},
+        Method = {icon = "ƒ", hl = "TSMethod"},
+        Property = {icon = "", hl = "TSMethod"},
+        Field = {icon = "", hl = "TSField"},
+        Constructor = {icon = "", hl = "TSConstructor"},
+        Enum = {icon = "ℰ", hl = "TSType"},
+        Interface = {icon = "ﰮ", hl = "TSType"},
+        Function = {icon = "", hl = "TSFunction"},
+        Variable = {icon = "", hl = "TSConstant"},
+        Constant = {icon = "", hl = "TSConstant"},
+        String = {icon = "𝓐", hl = "TSString"},
+        Number = {icon = "#", hl = "TSNumber"},
+        Boolean = {icon = "⊨", hl = "TSBoolean"},
+        Array = {icon = "", hl = "TSConstant"},
+        Object = {icon = "⦿", hl = "TSType"},
+        Key = {icon = "🔐", hl = "TSType"},
+        Null = {icon = "NULL", hl = "TSType"},
+        EnumMember = {icon = "", hl = "TSField"},
+        Struct = {icon = "𝓢", hl = "TSType"},
+        Event = {icon = "🗲", hl = "TSType"},
+        Operator = {icon = "+", hl = "TSOperator"},
+        TypeParameter = {icon = "𝙏", hl = "TSParameter"}
+    }
 }
 
 M.options = {}
 
 function M.has_numbers()
-   return M.options.show_numbers or M.options.show_relative_numbers
+    return M.options.show_numbers or M.options.show_relative_numbers
 end
 
 function M.get_position_navigation_direction()

lua/symbols-outline/symbols.lua

@@ -1,31 +1,6 @@
-local M = {}
+local config = require('symbols-outline.config')
 
-M.File = {icon = "", hl = "TSURI"}
-M.Module = {icon = "", hl = "TSNamespace"}
-M.Namespace = {icon = "", hl = "TSNamespace"}
-M.Package = {icon = "", hl = "TSNamespace"}
-M.Class = {icon = "𝓒", hl = "TSType"}
-M.Method = {icon = "ƒ", hl = "TSMethod"}
-M.Property = {icon = "", hl = "TSMethod"}
-M.Field = {icon = "", hl = "TSField"}
-M.Constructor = {icon = "", hl = "TSConstructor"}
-M.Enum = {icon = "ℰ", hl = "TSType"}
-M.Interface = {icon = "ﰮ", hl = "TSType"}
-M.Function = {icon = "", hl = "TSFunction"}
-M.Variable = {icon = "", hl = "TSConstant"}
-M.Constant = {icon = "", hl = "TSConstant"}
-M.String = {icon = "𝓐", hl = "TSString"}
-M.Number = {icon = "#", hl = "TSNumber"}
-M.Boolean = {icon = "⊨", hl = "TSBoolean"}
-M.Array = {icon = "", hl = "TSConstant"}
-M.Object = {icon = "⦿", hl = "TSType"}
-M.Key = {icon = "🔐", hl = "TSType"}
-M.Null = {icon = "NULL", hl = "TSType"}
-M.EnumMember = {icon = "", hl = "TSField"}
-M.Struct = {icon = "𝓢", hl = "TSType"}
-M.Event = {icon = "🗲", hl = "TSType"}
-M.Operator = {icon = "+", hl = "TSOperator"}
-M.TypeParameter = {icon = "𝙏", hl = "TSParameter"}
+local M = {}
 
 M.kinds = {
     "File", "Module", "Namespace", "Package", "Class", "Method", "Property",
@@ -35,9 +10,11 @@ M.kinds = {
 }
 
 function M.icon_from_kind(kind)
+    local symbols = config.options.symbols
+
     -- If the kind is higher than the available ones then default to 'Object'
     if kind > #M.kinds then kind = 19 end
-    return M[M.kinds[kind]].icon
+    return symbols[M.kinds[kind]].icon
 end
 
 return M

lua/symbols-outline/ui.lua

@@ -1,5 +1,6 @@
 local vim = vim
-local symbols = require('symbols-outline.symbols')
+local config = require('symbols-outline.config')
+local symbol_kinds = require('symbols-outline.symbols').kinds
 local M = {}
 
 M.markers = {
@@ -26,13 +27,15 @@ local function highlight_text(name, text, hl_group)
 end
 
 function M.setup_highlights()
+    local symbols = config.options.symbols
+
     -- markers
     highlight_text("marker_middle", M.markers.middle, "Comment")
     highlight_text("marker_vertical", M.markers.vertical, "Comment")
     highlight_text("markers_horizontal", M.markers.horizontal, "Comment")
     highlight_text("markers_bottom", M.markers.bottom, "Comment")
 
-    for _, value in ipairs(symbols.kinds) do
+    for _, value in ipairs(symbol_kinds) do
         local symbol = symbols[value]
         highlight_text(value, symbol.icon, symbol.hl)
     end