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Proper checkpointing of mutable values

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This commit is contained in:
Étienne Fildadut 2021-12-06 18:34:58 +01:00
parent 801df67461
commit 04c6683de8
14 changed files with 243 additions and 23 deletions
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39
interpreter/common.lua
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@ -1,6 +1,6 @@
local atypes, ltypes
local eval, run_block
local copy
local replace_with_copied_values
local common
--- copy some text & process it to be suited to be sent to Lua in an event
@ -49,17 +49,13 @@ common = {
global.aliases[alias] = fqm
state.aliases[alias] = nil
end
-- variable state
-- move values modifed in-place from read cache to variables
local cache = getmetatable(state.variables).cache
for var, value in pairs(cache) do
if value.modified then
value.modified = nil
state.variables[var] = value
end
cache[var] = nil
end
-- merge modified variables
-- merge modified mutable varables
local mt = getmetatable(state.variables)
replace_with_copied_values(global.variables, mt.copy_cache, mt.modified_tables)
mt.copy_cache = {}
mt.modified = {}
mt.cache = {}
-- merge modified re-assigned variables
for var, value in pairs(state.variables) do
global.variables[var] = value
state.variables[var] = nil
@ -109,6 +105,23 @@ common = {
end
end
return true
elseif a.type == "function reference" then
if #a.value ~= #b.value then
return false
end
for _, aname in ipairs(a.value) do
local found = false
for _, bname in ipairs(b.value) do
if aname == bname then
found = true
break
end
end
if not found then
return false
end
end
return true
else
return a.value == b.value
end
@ -394,6 +407,6 @@ local types = require((...):gsub("interpreter%.common$", "stdlib.types"))
atypes, ltypes = types.anselme, types.lua
eval = require((...):gsub("common$", "expression"))
run_block = require((...):gsub("common$", "interpreter")).run_block
copy = require((...):gsub("interpreter%.common$", "common")).copy
replace_with_copied_values = require((...):gsub("interpreter%.common$", "common")).replace_with_copied_values
return common