# HG changeset patch
# User jbe
# Date 1424994820 -3600
# Node ID 2d7e3028d99316f3bbab6812fcaf9fecf7b8e6c7
# Parent  de20248b53c28ba4b3e712c0108f451f51c7e397
Support iteration using pairs(...) on request.get_params, request.get_params_list, request.post_params, and request.post_params_list

diff -r de20248b53c2 -r 2d7e3028d993 moonbridge_http.lua
--- a/moonbridge_http.lua	Tue Feb 17 16:54:35 2015 +0100
+++ b/moonbridge_http.lua	Fri Feb 27 00:53:40 2015 +0100
@@ -87,11 +87,33 @@
 local new_params_list  -- defined later
 do
   local params_list_mapping = setmetatable({}, {__mode="k"})
+  local function nextnonempty(tbl, key)
+    while true do
+      key = next(tbl, key)
+      if key == nil then
+        return nil
+      end
+      local value = tbl[key]
+      if #value > 0 then
+        return key, value
+      end
+    end
+  end
+  local function nextvalue(tbl, key)
+    key = next(tbl, key)
+    if key == nil then
+      return nil
+    end
+    return key, tbl[key][1]
+  end
   local params_list_metatable = {
     __index = function(self, key)
       local tbl = {}
       self[key] = tbl
       return tbl
+    end,
+    __pairs = function(self)
+      return nextnonempty, self, nil
     end
   }
   local params_metatable = {
@@ -99,6 +121,9 @@
       local value = params_list_mapping[self][key][1]
       self[key] = value
       return value
+    end,
+    __pairs = function(self)
+      return nextvalue, params_list_mapping[self], nil
     end
   }
   -- returns a table to store key value-list pairs (i.e. multiple values),
diff -r de20248b53c2 -r 2d7e3028d993 reference.txt
--- a/reference.txt	Tue Feb 17 16:54:35 2015 +0100
+++ b/reference.txt	Fri Feb 27 00:53:40 2015 +0100
@@ -219,11 +219,17 @@
 A table that maps field names to their corresponding GET value. If there are
 several GET values with the given field name, then the first value is used.
 
+Note: May be implemented through metamethods, but does support iteration
+through pairs(...).
+
 
 ### request.get_params_list
 
 A table that maps field names to a sequence of their corresponding GET values.
 
+Note: May be implemented through metamethods, but does support iteration
+through pairs(...).
+
 
 ### request.headers
 
@@ -297,11 +303,17 @@
 A table that maps field names to their corresponding POST value. If there are
 several POST values with the given field name, then the first value is used.
 
+Note: May be implemented through metamethods, but does support iteration
+through pairs(...).
+
 
 ### request.post_params_list
 
 A table that maps field names to a sequence of their corresponding POST values.
 
+Note: May be implemented through metamethods, but does support iteration
+through pairs(...).
+
 
 ### request.query