feat: Add livegrep and lsp referecnes

lua/telescope/builtin.lua

@@ -4,29 +4,37 @@ A collection of builtin pipelines for telesceope.
 Meant for both example and for easy startup.
 --]]
 
+local finders = require('telescope.finders')
+local previewers = require('telescope.previewers')
+local pickers = require('telescope.pickers')
+local sorters = require('telescope.sorters')
+
 local builtin = {}
 
-builtin.git_files = function(_)
+builtin.git_files = function()
   -- TODO: Auto select bottom row
   -- TODO: filter out results when they don't match at all anymore.
 
-  local telescope = require('telescope')
-
-  local file_finder = telescope.finders.new {
+  local file_finder = finders.new {
     static = true,
 
-    fn_command = function() return 'git ls-files' end,
+    fn_command = function(self)
+      return {
+        command = 'git',
+        args = {'ls-files'}
+      }
+    end,
   }
 
-  local file_previewer = telescope.previewers.vim_buffer
+  local file_previewer = previewers.cat
 
-  local file_picker = telescope.pickers.new {
+  local file_picker = pickers.new {
     previewer = file_previewer
   }
 
   -- local file_sorter = telescope.sorters.get_ngram_sorter()
   -- local file_sorter = require('telescope.sorters').get_levenshtein_sorter()
-  local file_sorter = telescope.sorters.get_norcalli_sorter()
+  local file_sorter = sorters.get_norcalli_sorter()
 
   file_picker:find {
     prompt = 'Simple File',
@@ -35,5 +43,113 @@ builtin.git_files = function(_)
   }
 end
 
+builtin.live_grep = function()
+  local live_grepper = finders.new {
+    maximum_results = 1000,
+
+    fn_command = function(self, prompt)
+      -- TODO: Make it so that we can start searching on the first character.
+      if not prompt or prompt == "" then
+        return nil
+      end
+
+      return {
+        command = 'rg',
+        args = {"--vimgrep", prompt},
+      }
+    end
+  }
+
+  local file_previewer = previewers.vimgrep
+  local file_picker = pickers.new {
+    previewer = file_previewer
+  }
+
+  -- local file_sorter = telescope.sorters.get_ngram_sorter()
+  -- local file_sorter = require('telescope.sorters').get_levenshtein_sorter()
+  -- local file_sorter = sorters.get_norcalli_sorter()
+
+  -- Weight the results somehow to be more likely to be the ones that you've opened.
+  -- local old_files = {}
+  -- for _, f in ipairs(vim.v.oldfiles) do
+  --   old_files[f] = true
+  -- end
+
+  -- local oldfiles_sorter = sorters.new {
+  --   scoring_function = function(prompt, entry)
+  --     local line = entry.value
+
+  --     if not line then
+  --       return
+  --     end
+
+  --     local _, finish = string.find(line, ":")
+  --     local filename = string.sub(line, 1, finish - 1)
+  --     local expanded_fname = vim.fn.fnamemodify(filename, ':p')
+  --     if old_files[expanded_fname] then
+  --       print("Found oldfiles: ", entry.value)
+  --       return 0
+  --     else
+  --       return 1
+  --     end
+  --   end
+  -- }
+
+  file_picker:find {
+    prompt = 'Live Grep',
+    finder = live_grepper,
+    sorter = oldfiles_sorter,
+  }
+end
+
+builtin.lsp_references = function()
+  local params = vim.lsp.util.make_position_params()
+  params.context = { includeDeclaration = true }
+
+  local results_lsp = vim.lsp.buf_request_sync(0, "textDocument/references", params)
+  local locations = {}
+  for _, server_results in pairs(results_lsp) do
+    vim.list_extend(locations, vim.lsp.util.locations_to_items(server_results.result) or {})
+  end
+
+  local results = {}
+  for _, entry in ipairs(locations) do
+    local vimgrep_str = string.format(
+      "%s:%s:%s: %s",
+      vim.fn.fnamemodify(entry.filename, ":."),
+      entry.lnum,
+      entry.col,
+      entry.text
+    )
+
+    table.insert(results, {
+      valid = true,
+      value = entry,
+      ordinal = vimgrep_str,
+      display = vimgrep_str,
+    })
+  end
+
+  if vim.tbl_isempty(results) then
+    return
+  end
+
+  local lsp_reference_finder = finders.new {
+    results = results
+  }
+
+  local reference_previewer = previewers.qflist
+  local reference_picker = pickers.new {
+    previewer = reference_previewer
+  }
+
+  reference_picker:find {
+    prompt = 'LSP References',
+    finder = lsp_reference_finder,
+    sorter = sorters.get_norcalli_sorter(),
+  }
+end
+
+
 
 return builtin