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-rw-r--r--util/debug.lua79
1 files changed, 47 insertions, 32 deletions
diff --git a/util/debug.lua b/util/debug.lua
index bff0e347..00f476d0 100644
--- a/util/debug.lua
+++ b/util/debug.lua
@@ -1,6 +1,9 @@
-- Variables ending with these names will not
-- have their values printed ('password' includes
-- 'new_password', etc.)
+--
+-- luacheck: ignore 122/debug
+
local censored_names = {
password = true;
passwd = true;
@@ -13,7 +16,7 @@ local termcolours = require "util.termcolours";
local getstring = termcolours.getstring;
local styles;
do
- _ = termcolours.getstyle;
+ local _ = termcolours.getstyle;
styles = {
boundary_padding = _("bright");
filename = _("bright", "blue");
@@ -22,20 +25,23 @@ do
location = _("yellow");
};
end
-module("debugx", package.seeall);
-function get_locals_table(level)
- level = level + 1; -- Skip this function itself
+local function get_locals_table(thread, level)
local locals = {};
for local_num = 1, math.huge do
- local name, value = debug.getlocal(level, local_num);
+ local name, value;
+ if thread then
+ name, value = debug.getlocal(thread, level, local_num);
+ else
+ name, value = debug.getlocal(level+1, local_num);
+ end
if not name then break; end
table.insert(locals, { name = name, value = value });
end
return locals;
end
-function get_upvalues_table(func)
+local function get_upvalues_table(func)
local upvalues = {};
if func then
for upvalue_num = 1, math.huge do
@@ -47,7 +53,7 @@ function get_upvalues_table(func)
return upvalues;
end
-function string_from_var_table(var_table, max_line_len, indent_str)
+local function string_from_var_table(var_table, max_line_len, indent_str)
local var_string = {};
local col_pos = 0;
max_line_len = max_line_len or math.huge;
@@ -83,33 +89,25 @@ function string_from_var_table(var_table, max_line_len, indent_str)
end
end
-function get_traceback_table(thread, start_level)
+local function get_traceback_table(thread, start_level)
local levels = {};
for level = start_level, math.huge do
local info;
if thread then
- info = debug.getinfo(thread, level+1);
+ info = debug.getinfo(thread, level);
else
info = debug.getinfo(level+1);
end
if not info then break; end
-
+
levels[(level-start_level)+1] = {
level = level;
info = info;
- locals = get_locals_table(level+1);
+ locals = get_locals_table(thread, level+(thread and 0 or 1));
upvalues = get_upvalues_table(info.func);
};
- end
- return levels;
-end
-
-function traceback(...)
- local ok, ret = pcall(_traceback, ...);
- if not ok then
- return "Error in error handling: "..ret;
end
- return ret;
+ return levels;
end
local function build_source_boundary_marker(last_source_desc)
@@ -117,7 +115,7 @@ local function build_source_boundary_marker(last_source_desc)
return getstring(styles.boundary_padding, "v"..padding).." "..getstring(styles.filename, last_source_desc).." "..getstring(styles.boundary_padding, padding..(#last_source_desc%2==0 and "-v" or "v "));
end
-function _traceback(thread, message, level)
+local function _traceback(thread, message, level)
-- Lua manual says: debug.traceback ([thread,] [message [, level]])
-- I fathom this to mean one of:
@@ -134,15 +132,15 @@ function _traceback(thread, message, level)
return nil; -- debug.traceback() does this
end
- level = level or 1;
+ level = level or 0;
message = message and (message.."\n") or "";
-
- -- +3 counts for this function, and the pcall() and wrapper above us
- local levels = get_traceback_table(thread, level+3);
-
+
+ -- +3 counts for this function, and the pcall() and wrapper above us, the +1... I don't know.
+ local levels = get_traceback_table(thread, level+(thread == nil and 4 or 0));
+
local last_source_desc;
-
+
local lines = {};
for nlevel, level in ipairs(levels) do
local info = level.info;
@@ -171,9 +169,11 @@ function _traceback(thread, message, level)
nlevel = nlevel-1;
table.insert(lines, "\t"..(nlevel==0 and ">" or " ")..getstring(styles.level_num, "("..nlevel..") ")..line);
local npadding = (" "):rep(#tostring(nlevel));
- local locals_str = string_from_var_table(level.locals, optimal_line_length, "\t "..npadding);
- if locals_str then
- table.insert(lines, "\t "..npadding.."Locals: "..locals_str);
+ if level.locals then
+ local locals_str = string_from_var_table(level.locals, optimal_line_length, "\t "..npadding);
+ if locals_str then
+ table.insert(lines, "\t "..npadding.."Locals: "..locals_str);
+ end
end
local upvalues_str = string_from_var_table(level.upvalues, optimal_line_length, "\t "..npadding);
if upvalues_str then
@@ -186,8 +186,23 @@ function _traceback(thread, message, level)
return message.."stack traceback:\n"..table.concat(lines, "\n");
end
-function use()
+local function traceback(...)
+ local ok, ret = pcall(_traceback, ...);
+ if not ok then
+ return "Error in error handling: "..ret;
+ end
+ return ret;
+end
+
+local function use()
debug.traceback = traceback;
end
-return _M;
+return {
+ get_locals_table = get_locals_table;
+ get_upvalues_table = get_upvalues_table;
+ string_from_var_table = string_from_var_table;
+ get_traceback_table = get_traceback_table;
+ traceback = traceback;
+ use = use;
+};