Illuna-Minetest/basic_robot
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

infinite loop/recursion prevention:

Browse Source 
replaced expensive function calls with "if"
This commit is contained in:
rnd1 2017-01-18 21:09:37 +01:00
parent 6c82554a65
commit d177e3c3d5
1 changed files with 13 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
init.lua
View File

@ -3,7 +3,7 @@
basic_robot = {};
---- SETTINGS ------
basic_robot.call_limit = 32; -- how many execution calls per script run allowed
basic_robot.call_limit = 48; -- how many execution calls per script run allowed
basic_robot.bad_inventory_blocks = { -- disallow taking from these nodes inventories
["craft_guide:sign_wall"] = true,
@ -389,7 +389,7 @@ function getSandboxEnv (name)
error = error,
debug = debug,
_ccounter = basic_robot.data[name].ccounter, -- counts how many executions of critical spots in script
--_ccounter = basic_robot.data[name].ccounter, -- counts how many executions of critical spots in script
increase_ccounter =
function()
@ -465,12 +465,13 @@ local function preprocess_code(script)
when counter exceeds limit exit with error
--]]
script="_ccounter = 0; " .. script;
local i1 -- process script to insert call counter in every function
local insert_code = " increase_ccounter(); ";
local _increase_ccounter = " if _ccounter > " .. basic_robot.call_limit ..
" then error(\"Execution count \".. _ccounter .. \" exceeded ".. basic_robot.call_limit .. "\") end _ccounter = _ccounter + 1; "
local i1=0; local i2 = 0;
local found = true;
@ -486,7 +487,7 @@ local function preprocess_code(script)
local i21 = i2;
i2=string.find(script, "do", i2);
if i2 then
script = script.sub(script,1, i2+1) .. insert_code .. script.sub(script, i2+2);
script = script.sub(script,1, i2+1) .. _increase_ccounter .. script.sub(script, i2+2);
i1=i21+6; -- after while
found = true;
end
@ -499,8 +500,8 @@ local function preprocess_code(script)
if not is_inside_string(i2,script) then
i2=string.find(script, ")", i2);
if i2 then
script = script.sub(script,1, i2) .. insert_code .. script.sub(script, i2+1);
i1=i2+string.len(insert_code);
script = script.sub(script,1, i2) .. _increase_ccounter .. script.sub(script, i2+1);
i1=i2+string.len(_increase_ccounter);
found = true;
end
end
@ -512,8 +513,8 @@ local function preprocess_code(script)
if not is_inside_string(i2,script) then
i2=string.find(script, "do ", i2);
if i2 then
script = script.sub(script,1, i2+1) .. insert_code .. script.sub(script, i2+2);
i1=i2+string.len(insert_code);
script = script.sub(script,1, i2+1) .. _increase_ccounter .. script.sub(script, i2+2);
i1=i2+string.len(_increase_ccounter);
found = true;
end
end
@ -522,8 +523,8 @@ local function preprocess_code(script)
i2=string.find (script, "goto ", i1) -- fix goto OK
if i2 then
if not is_inside_string(i2,script) then
script = script.sub(script,1, i2-1) .. insert_code .. script.sub(script, i2);
i1=i2+string.len(insert_code)+5; -- insert + skip goto
script = script.sub(script,1, i2-1) .. _increase_ccounter .. script.sub(script, i2);
i1=i2+string.len(_increase_ccounter)+5; -- insert + skip goto
found = true;
end
end