1 files changed, 70 insertions, 0 deletions
diff --git a/script/src/core/name.lua b/script/src/core/name.lua
new file mode 100644
index 00000000..54947974
--- /dev/null
+++ b/script/src/core/name.lua
@@ -0,0 +1,70 @@
+return function (source, caller)
+    if not source then
+        return ''
+    end
+    local key
+    if source:get 'simple' then
+        local simple = source:get 'simple'
+        local chars = {}
+        for i, obj in ipairs(simple) do
+            if obj.type == 'name' then
+                chars[i] = obj[1]
+            elseif obj.type == 'index' then
+                chars[i] = '[?]'
+            elseif obj.type == 'call' then
+                chars[i] = '(?)'
+            elseif obj.type == ':' then
+                chars[i] = ':'
+            elseif obj.type == '.' then
+                chars[i] = '.'
+            else
+                chars[i] = '*' .. obj.type
+            end
+            if obj == source then
+                break
+            end
+        end
+        key = table.concat(chars)
+    elseif source.type == 'name' then
+        key = source[1]
+    elseif source.type == 'string' then
+        key = ('%q'):format(source[1])
+    elseif source.type == 'number' or source.type == 'boolean' then
+        key = tostring(source[1])
+    elseif source.type == 'simple' then
+        local chars = {}
+        for i, obj in ipairs(source) do
+            if obj.type == 'name' then
+                chars[i] = obj[1]
+            elseif obj.type == 'index' then
+                chars[i] = '[?]'
+            elseif obj.type == 'call' then
+                chars[i] = '(?)'
+            elseif obj.type == ':' then
+                chars[i] = ':'
+            elseif obj.type == '.' then
+                chars[i] = '.'
+            else
+                chars[i] = '*' .. obj.type
+            end
+        end
+        -- 这里有个特殊处理
+        -- function mt:func() 以 mt.func 的形式调用时
+        -- hover 显示为 mt.func(self)
+        if caller then
+            if chars[#chars-1] == ':' then
+                if not caller:get 'object' then
+                    chars[#chars-1] = '.'
+                end
+            elseif chars[#chars-1] == '.' then
+                if caller:get 'object' then
+                    chars[#chars-1] = ':'
+                end
+            end
+        end
+        key = table.concat(chars)
+    else
+        key = ''
+    end
+    return key
+end