1 files changed, 74 insertions, 0 deletions
diff --git a/server/src/method/textDocument/publishDiagnostics.lua b/server/src/method/textDocument/publishDiagnostics.lua
new file mode 100644
index 00000000..5f3d1d28
--- /dev/null
+++ b/server/src/method/textDocument/publishDiagnostics.lua
@@ -0,0 +1,74 @@
+local matcher = require 'matcher'
+
+local DiagnosticSeverity = {
+    Error       = 1,
+    Warning     = 2,
+    Information = 3,
+    Hint        = 4,
+}
+
+--[[
+/**
+ * Represents a related message and source code location for a diagnostic. This should be
+ * used to point to code locations that cause or related to a diagnostics, e.g when duplicating
+ * a symbol in a scope.
+ */
+export interface DiagnosticRelatedInformation {
+    /**
+     * The location of this related diagnostic information.
+     */
+    location: Location;
+
+    /**
+     * The message of this related diagnostic information.
+     */
+    message: string;
+}
+]]--
+
+local function getRange(start, finish, lines)
+    local start_row,  start_col  = lines:rowcol(start,  'utf8')
+    local finish_row, finish_col = lines:rowcol(finish, 'utf8')
+    return {
+        start = {
+            line = start_row - 1,
+            character = start_col - 1,
+        },
+        ['end'] = {
+            line = finish_row - 1,
+            -- 这里不用-1，因为前端期待的是匹配完成后的位置
+            character = finish_col,
+        },
+    }
+end
+
+local function createInfo(data, lines)
+    local diagnostic = {
+        source   = 'Lsp',
+        range    = getRange(data.start, data.finish, lines),
+        severity = DiagnosticSeverity[data.level],
+        code     = data.code,
+        message  = data.message,
+    }
+    return diagnostic
+end
+
+return function (lsp, params)
+    local results = params.results
+    local ast     = params.ast
+    local lines   = params.lines
+
+    local datas   = matcher.diagnostics(ast, results, lines)
+
+    if not datas then
+        -- 返回空表以清空之前的结果
+        return {}
+    end
+    
+    local diagnostics = {}
+    for i, data in ipairs(datas) do
+        diagnostics[i] = createInfo(data, lines)
+    end
+
+    return diagnostics
+end