Merge pull request #2 from Myzel394/add-lsp-support

Add LSP support

lua/jsonfly/json.lua

@@ -387,7 +387,7 @@ local function grok_object(self, text, start, options)
       ---- Add start position so we can quickly jump to it
       VALUE[key] = {
           value = new_val,
-          newlines = newlines or 0,
+          line_number = (newlines or 0) + 1,
           key_start = relative_start + 1,
           value_start = get_relative_i(text, i),
       }
@@ -440,7 +440,7 @@ local function grok_array(self, text, start, options)
       -- can't table.insert(VALUE, val) here because it's a no-op if val is nil
       VALUE[VALUE_INDEX] = {
           value = val,
-          newlines = newlines or 0,
+          line_number = (newlines or 0) + 1,
           value_start = relative_start,
           key_start = relative_start,
       }

lua/jsonfly/parsers.lua

@@ -0,0 +1,169 @@
+---@class EntryPosition
+---@field line_number number
+---@field key_start number
+---@field value_start number
+--
+---@class Entry
+---@field key string
+---@field value Entry|table|number|string|boolean|nil
+---@field position EntryPosition
+--
+---@class JSONEntry
+---@field value JSONEntry|string|number|boolean|nil
+---@field line_number number
+---@field value_start number
+---@field key_start number
+
+
+local M = {}
+
+---@param entry JSONEntry
+local function get_contents_from_json_value(entry)
+    local value = entry.value
+
+    if type(value) == "table" then
+        -- Recursively get the contents of the table
+        local contents = {}
+
+        for k, v in pairs(value) do
+            contents[k] = get_contents_from_json_value(v)
+        end
+
+        return contents
+    else
+        return entry.value
+    end
+end
+
+---@param t table
+---@return Entry[]
+function M:get_entries_from_lua_json(t)
+    local keys = {}
+
+    for k, _raw_value in pairs(t) do
+        ---@type JSONEntry
+        local raw_value = _raw_value
+        ---@type Entry
+        local entry = {
+            key = k,
+            value = get_contents_from_json_value(raw_value),
+            position = {
+                line_number = raw_value.line_number,
+                key_start = raw_value.key_start,
+                value_start = raw_value.value_start,
+            }
+        }
+        table.insert(keys, entry)
+
+        local v = raw_value.value
+
+        if type(v) == "table" then
+            local sub_keys = M:get_entries_from_lua_json(v)
+
+            for _, sub_key in ipairs(sub_keys) do
+                ---@type Entry
+                local entry = {
+                    key = k .. "." .. sub_key.key,
+                    value = get_contents_from_json_value(sub_key),
+                    position = sub_key.position,
+                }
+
+                table.insert(keys, entry)
+            end
+        end
+    end
+
+    return keys
+end
+
+---@param result Symbol
+---@return string|number|table|boolean|nil
+function M:parse_lsp_value(result)
+    if result.kind == 2 then
+        local value = {}
+
+        for _, child in ipairs(result.children) do
+            value[child.name] = M:parse_lsp_value(child)
+        end
+
+        return value
+    elseif result.kind == 16 then
+        return tonumber(result.detail)
+    elseif result.kind == 15 then
+        return result.detail
+    elseif result.kind == 18 then
+        local value = {}
+
+        for i, child in ipairs(result.children) do
+            value[i] = M:parse_lsp_value(child)
+        end
+
+        return value
+    elseif result.kind == 13 then
+        return nil
+    elseif result.kind == 17 then
+        return result.detail == "true"
+    end
+end
+
+
+---@class Symbol
+---@field name string
+---@field kind number 2 = Object, 16 = Number, 15 = String, 18 = Array, 13 = Null, 17 = Boolean
+---@field range Range
+---@field selectionRange Range
+---@field detail string
+---@field children Symbol[]
+--
+---@class Range
+---@field start Position
+---@field ["end"] Position
+--
+---@class Position
+---@field line number
+---@field character number
+--
+---@param symbols Symbol[]
+---@return Entry[]
+function M:get_entries_from_lsp_symbols(symbols)
+    local keys = {}
+
+    for _, symbol in ipairs(symbols) do
+        local key = symbol.name
+
+        ---@type Entry
+        local entry = {
+            key = key,
+            value = M:parse_lsp_value(symbol),
+            position = {
+                line_number = symbol.range.start.line + 1,
+                key_start = symbol.range.start.character + 2,
+                -- The LSP doesn't return the start of the value, so we'll just assume it's 3 characters after the key
+                -- We assume a default JSON file like:
+                -- `"my_key": "my_value"`
+                -- Since we get the end of the key, we can just add 4 to get the start of the value
+                value_start = symbol.selectionRange["end"].character + 3,
+            }
+        }
+        table.insert(keys, entry)
+
+        if symbol.kind == 2 then
+            local sub_keys = M:get_entries_from_lsp_symbols(symbol.children)
+
+            for _, sub_key in ipairs(sub_keys) do
+                ---@type Entry
+                local entry = {
+                    key = key .. "." .. sub_key.key,
+                    value = sub_key.value,
+                    position = sub_key.position,
+                }
+
+                table.insert(keys, entry)
+            end
+        end
+    end
+
+    return keys
+end
+
+return M

lua/jsonfly/utils.lua

@@ -0,0 +1,64 @@
+local M = {}
+
+function M:truncate_overflow(value, max_length, overflow_marker)
+    if vim.fn.strdisplaywidth(value) > max_length then
+        return value:sub(1, max_length - vim.fn.strdisplaywidth(overflow_marker)) .. overflow_marker
+    end
+
+    return value
+end
+
+---@param value any
+---@param opts Options
+function M:create_display_preview(value, opts)
+    local t = type(value)
+    local conceal
+
+    if opts.conceal == "auto" then
+        conceal = vim.o.conceallevel > 0
+    else
+        conceal = opts.conceal
+    end
+
+    if t == "table" then
+        local preview_table = {}
+
+        for k, v in pairs(value) do
+            table.insert(preview_table, k .. ": " .. M:create_display_preview(v, opts))
+        end
+
+        return "{ " .. table.concat(preview_table, ", ") .. " }", "other"
+    elseif t == "nil" then
+        return "null", "null"
+    elseif t == "number" then
+        return tostring(value), "number"
+    elseif t == "string" then
+        if conceal then
+            return value, "string"
+        else
+            return "\"" .. value .. "\"", "string"
+        end
+    elseif t == "boolean" then
+        return value and "true" or "false", "boolean"
+    end
+end
+
+---@param key string
+---@param replacement string
+---@return string
+---Replaces all previous keys with the replacement
+---Example: replace_previous_keys("a.b.c", "x") => "xxx.c"
+function M:replace_previous_keys(key, replacement)
+    for i = #key, 1, -1 do
+        if key:sub(i, i) == "." then
+            local len = i - 1
+            local before = replacement:rep(len)
+
+            return before .. "." .. key:sub(i + 1)
+        end
+    end
+
+    return key
+end
+
+return M

lua/telescope/_extensions/jsonfly.lua

@@ -1,3 +1,4 @@
+---- Documentation for jsonfly ----
 --- Type definitions
 ---@class Options
 ---@field key_max_length number - Length for the key column, 0 for no column-like display, Default: 50
@@ -9,6 +10,7 @@
 ---@field highlights Highlights - Highlight groups for different types
 ---@field jump_behavior "key_start"|"value_start" - Behavior for jumping to the location, "key_start" == Jump to the start of the key, "value_start" == Jump to the start of the value, Default: "key_start"
 ---@field subkeys_display "normal"|"waterfall" - Display subkeys in a normal or waterfall style, Default: "normal"
+---@field backend "lua"|"lsp" - Backend to use for parsing JSON, "lua" = Use our own Lua parser to parse the JSON, "lsp" = Use your LSP to parse the JSON (currently only https://github.com/Microsoft/vscode-json-languageservice is supported). If the "lsp" backend is selected but the LSP fails, it will fallback to the "lua" backend, Default: "lsp"
 ---
 ---@class Highlights
 ---@field number string - Highlight group for numbers, Default: "@number.json"
@@ -17,93 +19,17 @@
 ---@field null string - Highlight group for null values, Default: "@constant.builtin.json"
 ---@field other string - Highlight group for other types, Default: "@label.json"
 
+local parsers = require"jsonfly.parsers"
+local json = require"jsonfly.json"
+local utils = require"jsonfly.utils"
+
 local json = require"jsonfly.json"
 local finders = require "telescope.finders"
 local pickers = require "telescope.pickers"
-local conf = require("telescope.config").values
+local conf = require"telescope.config".values
 local make_entry = require "telescope.make_entry"
 local entry_display = require "telescope.pickers.entry_display"
 
-local function get_recursive_keys(t)
-    local keys = {}
-
-    for k, raw_value in pairs(t) do
-        table.insert(keys, {key = k, entry = raw_value})
-
-        local v = raw_value.value
-
-        if type(v) == "table" then
-            local sub_keys = get_recursive_keys(v)
-            for _, sub_key in ipairs(sub_keys) do
-                table.insert(keys, {key = k .. "." .. sub_key.key, entry = sub_key.entry})
-            end
-        end
-    end
-
-    return keys
-end
-
-local function truncate_overflow(value, max_length, overflow_marker)
-    if vim.fn.strdisplaywidth(value) > max_length then
-        return value:sub(1, max_length - vim.fn.strdisplaywidth(overflow_marker)) .. overflow_marker
-    end
-
-    return value
-end
-
----@param value any
----@param opts Options
-local function create_display_preview(value, opts)
-    local t = type(value)
-    local conceal
-
-    if opts.conceal == "auto" then
-        conceal = vim.o.conceallevel > 0
-    else
-        conceal = opts.conceal
-    end
-
-    if t == "table" then
-        local preview_table = {}
-
-        for k, v in pairs(value) do
-            table.insert(preview_table, k .. ": " .. create_display_preview(v.value, opts))
-        end
-
-        return "{ " .. table.concat(preview_table, ", ") .. " }", "other"
-    elseif t == "nil" then
-        return "null", "null"
-    elseif t == "number" then
-        return tostring(value), "number"
-    elseif t == "string" then
-        if conceal then
-            return value, "string"
-        else
-            return "\"" .. value .. "\"", "string"
-        end
-    elseif t == "boolean" then
-        return value and "true" or "false", "boolean"
-    end
-end
-
----@param key string
----@param replacement string
----@return string
----Replaces all previous keys with the replacement
----Example: replace_previous_keys("a.b.c", "x") => "xxx.c"
-local function replace_previous_keys(key, replacement)
-    for i = #key, 1, -1 do
-        if key:sub(i, i) == "." then
-            local len = i - 1
-            local before = replacement:rep(len)
-
-            return before .. "." .. key:sub(i + 1)
-        end
-    end
-
-    return key
-end
-
 ---@type Options
 local opts = {
     key_max_length = 50,
@@ -121,21 +47,13 @@ local opts = {
     },
     jump_behavior = "key_start",
     subkeys_display = "normal",
+    backend = "lsp",
 }
 
-return require"telescope".register_extension {
+---@param results Entry[]
-    setup = function(extension_config)
+---@param buffer number
-        opts = vim.tbl_deep_extend("force", opts, extension_config or {})
+local function show_picker(results, buffer)
-    end,
+    local filename = vim.api.nvim_buf_get_name(buffer)
-    exports = {
-        jsonfly = function()
-            local current_buf = vim.api.nvim_get_current_buf()
-            local filename = vim.api.nvim_buf_get_name(current_buf)
-            local content_lines = vim.api.nvim_buf_get_lines(current_buf, 0, -1, false)
-            local content = table.concat(content_lines, "\n")
-
-            local parsed = json:decode(content)
-            local keys = get_recursive_keys(parsed)
 
     local displayer = entry_display.create {
         separator = " ",
@@ -149,23 +67,26 @@ return require"telescope".register_extension {
     pickers.new(opts, {
         prompt_title = opts.prompt_title,
         finder = finders.new_table {
-                    results = keys,
+            results = results,
+            ---@param entry Entry
             entry_maker = function(entry)
                 local _, raw_depth = entry.key:gsub("%.", ".")
                 local depth = (raw_depth or 0) + 1
 
                 return make_entry.set_default_entry_mt({
-                            value = current_buf,
+                    value = buffer,
                     ordinal = entry.key,
                     display = function(_)
-                                local preview, hl_group_key = create_display_preview(entry.entry.value, opts)
+                        local preview, hl_group_key = utils:create_display_preview(entry.value, opts)
 
-                                local key = opts.subkeys_display == "normal" and entry.key or replace_previous_keys(entry.key, " ")
+                        local key = opts.subkeys_display == "normal" and entry.key or utils:replace_previous_keys(entry.key, " ")
+
+                        print(vim.inspect(entry))
 
                         return displayer {
                             { depth, "TelescopeResultsNumber"},
                             {
-                                         truncate_overflow(
+                                utils:truncate_overflow(
                                     key,
                                     opts.key_max_length,
                                     opts.overflow_marker
@@ -173,7 +94,7 @@ return require"telescope".register_extension {
                                 "@property.json",
                             },
                             {
-                                        truncate_overflow(
+                                utils:truncate_overflow(
                                     preview,
                                     opts.max_length,
                                     opts.overflow_marker
@@ -183,13 +104,13 @@ return require"telescope".register_extension {
                         }
                     end,
 
-                            bufnr = current_buf,
+                    bufnr = buffer,
                     filename = filename,
-                            lnum = entry.entry.newlines + 1,
+                    lnum = entry.position.line_number,
                     col = opts.jump_behavior == "key_start"
-                                    and entry.entry.key_start
+                            and entry.position.key_start
                             -- Use length ("#" operator) as vim jumps to the bytes, not characters
-                                    or entry.entry.value_start
+                            or entry.position.value_start
                 }, opts)
             end,
         },
@@ -198,5 +119,45 @@ return require"telescope".register_extension {
         sorting_strategy = "ascending",
     }):find()
 end
+
+return require"telescope".register_extension {
+    setup = function(extension_config)
+        opts = vim.tbl_deep_extend("force", opts, extension_config or {})
+    end,
+    exports = {
+        jsonfly = function(xopts)
+            local current_buf = vim.api.nvim_get_current_buf()
+            local content_lines = vim.api.nvim_buf_get_lines(current_buf, 0, -1, false)
+            local content = table.concat(content_lines, "\n")
+
+            function run_lua_parser()
+                local parsed = json:decode(content)
+                local keys = parsers:get_entries_from_lua_json(parsed)
+
+                show_picker(keys, current_buf)
+            end
+
+            if opts.backend == "lsp" then
+                local params = vim.lsp.util.make_position_params(xopts.winnr)
+
+                vim.lsp.buf_request(
+                    current_buf,
+                    "textDocument/documentSymbol",
+                    params,
+                    function(error, lsp_response)
+                        if error then
+                            run_lua_parser()
+                            return
+                        end
+
+                        local result = parsers:get_entries_from_lsp_symbols(lsp_response)
+
+                        show_picker(result, current_buf)
+                    end
+                )
+            else
+                run_lua_parser()
+            end
+        end
     }
 }