From 3c5ff2671305041d03cde8dafb05d4aed0cc0a65 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=9C=80=E8=90=8C=E5=B0=8F=E6=B1=90?= <sumneko@hotmail.com>
Date: Fri, 21 Dec 2018 16:50:01 +0800
Subject: =?UTF-8?q?=E6=89=BE=E5=BD=93=E5=89=8D=E5=8F=82=E6=95=B0?=
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---
 server/src/method/init.lua                       |  1 +
 server/src/method/initialize.lua                 |  4 ++
 server/src/method/textDocument/signatureHelp.lua | 48 ++++++++++++++++++++++++
 3 files changed, 53 insertions(+)
 create mode 100644 server/src/method/textDocument/signatureHelp.lua

(limited to 'server/src/method')

diff --git a/server/src/method/init.lua b/server/src/method/init.lua
index 22c58289..ea7fa05a 100644
--- a/server/src/method/init.lua
+++ b/server/src/method/init.lua
@@ -18,6 +18,7 @@ init 'textDocument/implementation'
 init 'textDocument/publishDiagnostics'
 init 'textDocument/rename'
 init 'textDocument/references'
+init 'textDocument/signatureHelp'
 init 'workspace/didChangeWatchedFiles'
 init 'workspace/didChangeWorkspaceFolders'
 
diff --git a/server/src/method/initialize.lua b/server/src/method/initialize.lua
index 05a1bb49..4bc3ff2e 100644
--- a/server/src/method/initialize.lua
+++ b/server/src/method/initialize.lua
@@ -12,6 +12,10 @@ return function (lsp)
             referencesProvider = true,
             -- 支持“重命名”
             renameProvider = true,
+            -- 支持“签名帮助”
+            signatureHelpProvider = {
+                triggerCharacters = { '(', ',' },
+            },
             -- 文本同步方式
             textDocumentSync = {
                 -- 打开关闭文本时通知
diff --git a/server/src/method/textDocument/signatureHelp.lua b/server/src/method/textDocument/signatureHelp.lua
new file mode 100644
index 00000000..0fb7fd10
--- /dev/null
+++ b/server/src/method/textDocument/signatureHelp.lua
@@ -0,0 +1,48 @@
+local matcher = require 'matcher'
+
+return function (lsp, params)
+    local uri = params.textDocument.uri
+    local vm, lines = lsp:loadVM(uri)
+    if not vm then
+        return {}
+    end
+    -- lua是从1开始的，因此都要+1
+    local position = lines:position(params.position.line + 1, params.position.character + 1)
+    do return end
+    return {
+        activeSignature = 0,
+        activeParameter = 1,
+        signatures = {
+            {
+                label = 'xxxx(a, b, c)',
+                documentation = {
+                    kind = 'markdown',
+                    value = '函数说明',
+                },
+                parameters = {
+                    {
+                        label = 'a',
+                        documentation = {
+                            kind = 'markdown',
+                            value = '参数a说明',
+                        },
+                    },
+                    {
+                        label = 'b',
+                        documentation = {
+                            kind = 'markdown',
+                            value = '参数b说明',
+                        },
+                    },
+                    {
+                        label = 'c',
+                        documentation = {
+                            kind = 'markdown',
+                            value = '参数c说明',
+                        },
+                    },
+                },
+            },
+        }
+    }
+end
-- 
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