mirror of
https://github.com/kikito/inspect.lua.git
synced 2024-12-15 14:34:21 +00:00
(refactor) rewrite using Teal (#52)
This commit is contained in:
Enrique García Cota
GitHub
parent
c6472bccdf
commit
3c7414a0d0
2
.github/workflows/test.yml
vendored
2
.github/workflows/test.yml
vendored
@ -8,7 +8,7 @@ jobs:
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strategy:
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matrix:
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luaVersion: ["5.1.5", "5.2.4", "luajit-2.1.0-beta3", "luajit-openresty"]
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luaVersion: ["5.1", "5.2", "5.3", "5.4", "luajit", "luajit-openresty"]
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steps:
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- uses: actions/checkout@master
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3
.luacheckrc
Normal file
3
.luacheckrc
Normal file
@ -0,0 +1,3 @@
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max_line_length=false
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unused_args=false
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17
Makefile
Normal file
17
Makefile
Normal file
@ -0,0 +1,17 @@
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all: gen check test
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dev:
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luarocks install busted
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luarocks install tl
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gen:
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tl gen inspect.tl
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check:
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luacheck inspect.lua
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test:
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busted
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171
inspect.lua
171
inspect.lua
@ -1,11 +1,29 @@
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local inspect ={
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_VERSION = 'inspect.lua 3.1.0',
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_URL = 'http://github.com/kikito/inspect.lua',
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_DESCRIPTION = 'human-readable representations of tables',
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_LICENSE = [[
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local _tl_compat; if (tonumber((_VERSION or ''):match('[%d.]*$')) or 0) < 5.3 then local p, m = pcall(require, 'compat53.module'); if p then _tl_compat = m end end; local math = _tl_compat and _tl_compat.math or math; local string = _tl_compat and _tl_compat.string or string; local table = _tl_compat and _tl_compat.table or table
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local inspect = {Options = {}, }
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inspect._VERSION = 'inspect.lua 3.1.0'
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inspect._URL = 'http://github.com/kikito/inspect.lua'
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inspect._DESCRIPTION = 'human-readable representations of tables'
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inspect._LICENSE = [[
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MIT LICENSE
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Copyright (c) 2013 Enrique García Cota
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Copyright (c) 2022 Enrique García Cota
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files (the
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@ -26,19 +44,17 @@ local inspect ={
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TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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]]
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}
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local tostring = tostring
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inspect.KEY = setmetatable({}, { __tostring = function() return 'inspect.KEY' end })
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inspect.METATABLE = setmetatable({}, { __tostring = function() return 'inspect.METATABLE' end })
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local tostring = tostring
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local function rawpairs(t)
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return next, t, nil
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end
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-- Apostrophizes the string if it has quotes, but not aphostrophes
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-- Otherwise, it returns a regular quoted string
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local function smartQuote(str)
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if str:match('"') and not str:match("'") then
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return "'" .. str .. "'"
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@ -46,12 +62,12 @@ local function smartQuote(str)
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return '"' .. str:gsub('"', '\\"') .. '"'
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end
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-- \a => '\\a', \0 => nil
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local shortControlCharEscapes = {
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["\a"] = "\\a", ["\b"] = "\\b", ["\f"] = "\\f", ["\n"] = "\\n",
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["\r"] = "\\r", ["\t"] = "\\t", ["\v"] = "\\v", ["\127"] = "\\127",
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}
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local longControlCharEscapes = {["\127"]="\127"} -- \a => nil, \0 => \000, 31 => \031
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local longControlCharEscapes = { ["\127"] = "\127" }
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for i = 0, 31 do
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local ch = string.char(i)
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if not shortControlCharEscapes[ch] then
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@ -59,49 +75,51 @@ for i=0, 31 do
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longControlCharEscapes[ch] = string.format("\\%03d", i)
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end
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end
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--longControlCharEscapes["\127"]="\\127"
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local function escape(str)
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return (str:gsub("\\", "\\\\")
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:gsub("(%c)%f[0-9]", longControlCharEscapes)
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:gsub("%c", shortControlCharEscapes))
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return (str:gsub("\\", "\\\\"):
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gsub("(%c)%f[0-9]", longControlCharEscapes):
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gsub("%c", shortControlCharEscapes))
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end
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local function isIdentifier(str)
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return type(str) == 'string' and str:match( "^[_%a][_%a%d]*$" )
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return type(str) == "string" and not not str:match("^[_%a][_%a%d]*$")
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end
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local flr = math.floor
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local function isSequenceKey(k, sequenceLength)
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return type(k) == 'number'
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and 1 <= k
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and k <= sequenceLength
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and math.floor(k) == k
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return type(k) == "number" and
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flr(k) == k and
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1 <= (k) and
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k <= sequenceLength
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end
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local defaultTypeOrders = {
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['number'] = 1, ['boolean'] = 2, ['string'] = 3, ['table'] = 4,
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['function'] = 5, ['userdata'] = 6, ['thread'] = 7
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['function'] = 5, ['userdata'] = 6, ['thread'] = 7,
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}
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local function sortKeys(a, b)
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local ta, tb = type(a), type(b)
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-- strings and numbers are sorted numerically/alphabetically
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if ta == tb and (ta == 'string' or ta == 'number') then return a < b end
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local dta, dtb = defaultTypeOrders[ta], defaultTypeOrders[tb]
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-- Two default types are compared according to the defaultTypeOrders table
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if dta and dtb then return defaultTypeOrders[ta] < defaultTypeOrders[tb]
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elseif dta then return true -- default types before custom ones
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elseif dtb then return false -- custom types after default ones
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if ta == tb and (ta == 'string' or ta == 'number') then
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return (a) < (b)
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end
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-- custom types are sorted out alphabetically
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local dta, dtb = defaultTypeOrders[ta], defaultTypeOrders[tb]
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if dta and dtb then return defaultTypeOrders[ta] < defaultTypeOrders[tb]
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elseif dta then return true
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elseif dtb then return false
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end
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return ta < tb
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end
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-- For implementation reasons, the behavior of rawlen & # is "undefined" when
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-- tables aren't pure sequences. So we implement our own # operator.
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local function getSequenceLength(t)
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local len = 1
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local v = rawget(t, len)
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@ -128,7 +146,7 @@ end
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local function countTableAppearances(t, tableAppearances)
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tableAppearances = tableAppearances or {}
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if type(t) == 'table' then
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if type(t) == "table" then
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if not tableAppearances[t] then
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tableAppearances[t] = 1
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for k, v in rawpairs(t) do
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@ -144,27 +162,27 @@ local function countTableAppearances(t, tableAppearances)
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return tableAppearances
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end
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local copySequence = function(s)
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local copy, len = {}, #s
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for i=1, len do copy[i] = s[i] end
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return copy, len
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end
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local function makePath(path, a, b)
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local newPath = {}
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local len = #path
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for i = 1, len do newPath[i] = path[i] end
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newPath[len + 1] = a
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newPath[len + 2] = b
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local function makePath(path, ...)
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local keys = {...}
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local newPath, len = copySequence(path)
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for i=1, #keys do
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newPath[len + i] = keys[i]
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end
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return newPath
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end
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local function processRecursive(process, item, path, visited)
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local function processRecursive(process,
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item,
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path,
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visited)
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if item == nil then return nil end
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if visited[item] then return visited[item] end
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local processed = process(item, path)
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if type(processed) == 'table' then
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if type(processed) == "table" then
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local processedCopy = {}
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visited[item] = processedCopy
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local processedKey
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@ -177,7 +195,7 @@ local function processRecursive(process, item, path, visited)
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end
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local mt = processRecursive(process, getmetatable(processed), makePath(path, inspect.METATABLE), visited)
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if type(mt) ~= 'table' then mt = nil end -- ignore not nil/table __metatable field
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if type(mt) ~= 'table' then mt = nil end
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setmetatable(processedCopy, mt)
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processed = processedCopy
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end
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@ -186,19 +204,29 @@ end
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-------------------------------------------------------------------
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local Inspector = {}
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local Inspector_mt = { __index = Inspector }
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function Inspector:puts(...)
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local args = {...}
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function Inspector:puts(a, b, c, d, e)
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local buffer = self.buffer
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local len = #buffer
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for i=1, #args do
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len = len + 1
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buffer[len] = args[i]
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end
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buffer[len + 1] = a
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buffer[len + 2] = b
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buffer[len + 3] = c
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buffer[len + 4] = d
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buffer[len + 5] = e
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end
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function Inspector:down(f)
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@ -208,7 +236,8 @@ function Inspector:down(f)
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end
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function Inspector:tabify()
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self:puts(self.newline, string.rep(self.indent, self.level))
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self:puts(self.newline,
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string.rep(self.indent, self.level))
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end
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function Inspector:alreadyVisited(v)
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@ -226,8 +255,15 @@ function Inspector:getId(v)
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return tostring(id)
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end
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function Inspector:putValue(_)
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end
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function Inspector:putKey(k)
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if isIdentifier(k) then return self:puts(k) end
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if isIdentifier(k) then
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self:puts(k)
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return
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end
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self:puts("[")
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self:putValue(k)
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self:puts("]")
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@ -274,9 +310,9 @@ function Inspector:putTable(t)
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end
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end)
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if nonSequentialKeysLength > 0 or type(mt) == 'table' then -- result is multi-lined. Justify closing }
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if nonSequentialKeysLength > 0 or type(mt) == 'table' then
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self:tabify()
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elseif sequenceLength > 0 then -- array tables have one extra space before closing }
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elseif sequenceLength > 0 then
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self:puts(' ')
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end
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@ -286,7 +322,6 @@ end
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function Inspector:putValue(v)
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local tv = type(v)
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if tv == 'string' then
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self:puts(smartQuote(escape(v)))
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elseif tv == 'number' or tv == 'boolean' or tv == 'nil' or
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@ -299,12 +334,13 @@ function Inspector:putValue(v)
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end
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end
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-------------------------------------------------------------------
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function inspect.inspect(root, options)
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options = options or {}
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local depth = options.depth or math.huge
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local depth = options.depth or (math.huge)
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local newline = options.newline or '\n'
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local indent = options.indent or ' '
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local process = options.process
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@ -321,7 +357,7 @@ function inspect.inspect(root, options)
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maxIds = {},
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newline = newline,
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indent = indent,
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tableAppearances = countTableAppearances(root)
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tableAppearances = countTableAppearances(root),
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}, Inspector_mt)
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inspector:putValue(root)
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@ -329,7 +365,10 @@ function inspect.inspect(root, options)
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return table.concat(inspector.buffer)
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end
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setmetatable(inspect, { __call = function(_, ...) return inspect.inspect(...) end })
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setmetatable(inspect, {
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__call = function(_, root, options)
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return inspect.inspect(root, options)
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end,
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})
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return inspect
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374
inspect.tl
Normal file
374
inspect.tl
Normal file
@ -0,0 +1,374 @@
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-- inspect.tl
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local record inspect
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_VERSION: string
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_URL: string
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_DESCRIPTION: string
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_LICENSE: string
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KEY: table
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METATABLE: table
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type ProcessFunction = function(any, {any}): any
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record Options
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depth: integer
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newline: string
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indent: string
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process: ProcessFunction
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end
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end
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inspect._VERSION = 'inspect.lua 3.1.0'
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inspect._URL = 'http://github.com/kikito/inspect.lua'
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inspect._DESCRIPTION = 'human-readable representations of tables'
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inspect._LICENSE = [[
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MIT LICENSE
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Copyright (c) 2022 Enrique García Cota
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Permission is hereby granted, free of charge, to any person obtaining a
|
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copy of this software and associated documentation files (the
|
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"Software"), to deal in the Software without restriction, including
|
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without limitation the rights to use, copy, modify, merge, publish,
|
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distribute, sublicense, and/or sell copies of the Software, and to
|
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permit persons to whom the Software is furnished to do so, subject to
|
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the following conditions:
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|
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The above copyright notice and this permission notice shall be included
|
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in all copies or substantial portions of the Software.
|
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|
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
|
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OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
|
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IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
|
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CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
|
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TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
|
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SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
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]]
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inspect.KEY = setmetatable({}, {__tostring = function(): string return 'inspect.KEY' end})
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inspect.METATABLE = setmetatable({}, {__tostring = function(): string return 'inspect.METATABLE' end})
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|
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local tostring = tostring
|
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|
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local function rawpairs(t: table): function, table, nil
|
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return next, t, nil
|
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end
|
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|
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-- Apostrophizes the string if it has quotes, but not aphostrophes
|
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-- Otherwise, it returns a regular quoted string
|
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local function smartQuote(str: string): string
|
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if str:match('"') and not str:match("'") then
|
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return "'" .. str .. "'"
|
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end
|
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return '"' .. str:gsub('"', '\\"') .. '"'
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end
|
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|
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-- \a => '\\a', \0 => '\\0', 31 => '\31'
|
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local shortControlCharEscapes: {string:string} = {
|
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["\a"] = "\\a", ["\b"] = "\\b", ["\f"] = "\\f", ["\n"] = "\\n",
|
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["\r"] = "\\r", ["\t"] = "\\t", ["\v"] = "\\v", ["\127"] = "\\127",
|
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}
|
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local longControlCharEscapes: {string:string} = {["\127"]="\127"} -- \a => nil, \0 => \000, 31 => \031
|
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for i=0, 31 do
|
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local ch: string = string.char(i)
|
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if not shortControlCharEscapes[ch] then
|
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shortControlCharEscapes[ch] = "\\"..i
|
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longControlCharEscapes[ch] = string.format("\\%03d", i)
|
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end
|
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end
|
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|
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local function escape(str: string): string
|
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return (str:gsub("\\", "\\\\")
|
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:gsub("(%c)%f[0-9]", longControlCharEscapes)
|
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:gsub("%c", shortControlCharEscapes))
|
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end
|
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|
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local function isIdentifier(str: any): boolean
|
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return str is string and not not str:match("^[_%a][_%a%d]*$")
|
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end
|
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|
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local flr = math.floor
|
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local function isSequenceKey(k: any, sequenceLength: integer): boolean
|
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return k is number
|
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and flr(k) == k
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and 1 <= (k)
|
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and k <= sequenceLength
|
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end
|
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|
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local defaultTypeOrders: {string:integer} = {
|
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['number'] = 1, ['boolean'] = 2, ['string'] = 3, ['table'] = 4,
|
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['function'] = 5, ['userdata'] = 6, ['thread'] = 7
|
||||
}
|
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|
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local function sortKeys(a:any, b:any): boolean
|
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local ta, tb: string, string = type(a), type(b)
|
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|
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-- strings and numbers are sorted numerically/alphabetically
|
||||
if ta == tb and (ta == 'string' or ta == 'number') then
|
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return (a as string) < (b as string)
|
||||
end
|
||||
|
||||
local dta, dtb: integer, integer = defaultTypeOrders[ta], defaultTypeOrders[tb]
|
||||
-- Two default types are compared according to the defaultTypeOrders table
|
||||
if dta and dtb then return defaultTypeOrders[ta] < defaultTypeOrders[tb]
|
||||
elseif dta then return true -- default types before custom ones
|
||||
elseif dtb then return false -- custom types after default ones
|
||||
end
|
||||
|
||||
-- custom types are sorted out alphabetically
|
||||
return ta < tb
|
||||
end
|
||||
|
||||
-- For implementation reasons, the behavior of rawlen & # is "undefined" when
|
||||
-- tables aren't pure sequences. So we implement our own # operator.
|
||||
local function getSequenceLength(t: table): integer
|
||||
local len: integer = 1
|
||||
local v: any = rawget(t, len)
|
||||
while v ~= nil do
|
||||
len = len + 1
|
||||
v = rawget(t,len)
|
||||
end
|
||||
return len - 1
|
||||
end
|
||||
|
||||
local function getNonSequentialKeys(t: table): {any}, integer, integer
|
||||
local keys, keysLength: {any}, integer = {}, 0
|
||||
local sequenceLength: integer = getSequenceLength(t)
|
||||
for k,_ in rawpairs(t) do
|
||||
if not isSequenceKey(k, sequenceLength) then
|
||||
keysLength = keysLength + 1
|
||||
keys[keysLength] = k
|
||||
end
|
||||
end
|
||||
table.sort(keys, sortKeys)
|
||||
return keys, keysLength, sequenceLength
|
||||
end
|
||||
|
||||
local function countTableAppearances(t: any, tableAppearances: {any:integer}): {any:integer}
|
||||
tableAppearances = tableAppearances or {}
|
||||
|
||||
if t is table then
|
||||
if not tableAppearances[t] then
|
||||
tableAppearances[t] = 1
|
||||
for k,v in rawpairs(t) do
|
||||
countTableAppearances(k, tableAppearances)
|
||||
countTableAppearances(v, tableAppearances)
|
||||
end
|
||||
countTableAppearances(getmetatable(t), tableAppearances)
|
||||
else
|
||||
tableAppearances[t] = tableAppearances[t] + 1
|
||||
end
|
||||
end
|
||||
|
||||
return tableAppearances
|
||||
end
|
||||
|
||||
local function makePath(path: {any}, a: any, b: any): {any}
|
||||
local newPath: {any} = {}
|
||||
local len: integer = #path
|
||||
for i=1, len do newPath[i] = path[i] end
|
||||
|
||||
newPath[len + 1] = a
|
||||
newPath[len + 2] = b
|
||||
|
||||
return newPath
|
||||
end
|
||||
|
||||
|
||||
local function processRecursive(process: inspect.ProcessFunction,
|
||||
item: any,
|
||||
path: {any},
|
||||
visited: {any:any}): any
|
||||
if item == nil then return nil end
|
||||
if visited[item] then return visited[item] end
|
||||
|
||||
local processed: any = process(item, path)
|
||||
if processed is table then
|
||||
local processedCopy = {}
|
||||
visited[item] = processedCopy
|
||||
local processedKey: any
|
||||
|
||||
for k,v in rawpairs(processed) do
|
||||
processedKey = processRecursive(process, k, makePath(path, k, inspect.KEY), visited)
|
||||
if processedKey ~= nil then
|
||||
processedCopy[processedKey] = processRecursive(process, v, makePath(path, processedKey), visited)
|
||||
end
|
||||
end
|
||||
|
||||
local mt = processRecursive(process, getmetatable(processed), makePath(path, inspect.METATABLE), visited)
|
||||
if type(mt) ~= 'table' then mt = nil end -- ignore not nil/table __metatable field
|
||||
setmetatable(processedCopy, mt as metatable<{any:any}>)
|
||||
processed = processedCopy
|
||||
end
|
||||
return processed
|
||||
end
|
||||
|
||||
|
||||
|
||||
-------------------------------------------------------------------
|
||||
|
||||
local type Inspector = record
|
||||
depth: integer
|
||||
level: integer
|
||||
buffer: {string}
|
||||
ids: {any:integer}
|
||||
maxIds: {any:integer}
|
||||
newline: string
|
||||
indent: string
|
||||
tableAppearances: {table: integer}
|
||||
end
|
||||
|
||||
local Inspector_mt = {__index = Inspector}
|
||||
|
||||
function Inspector:puts(a:string, b:string, c:string, d:string, e:string): nil
|
||||
local buffer: {string} = self.buffer
|
||||
local len: integer = #buffer
|
||||
buffer[len+1] = a
|
||||
buffer[len+2] = b
|
||||
buffer[len+3] = c
|
||||
buffer[len+4] = d
|
||||
buffer[len+5] = e
|
||||
end
|
||||
|
||||
function Inspector:down(f: function()): nil
|
||||
self.level = self.level + 1
|
||||
f()
|
||||
self.level = self.level - 1
|
||||
end
|
||||
|
||||
function Inspector:tabify(): nil
|
||||
self:puts(self.newline,
|
||||
string.rep(self.indent, self.level))
|
||||
end
|
||||
|
||||
function Inspector:alreadyVisited(v: any): boolean
|
||||
return self.ids[v] ~= nil
|
||||
end
|
||||
|
||||
function Inspector:getId(v: any): string
|
||||
local id: integer = self.ids[v]
|
||||
if not id then
|
||||
local tv: string = type(v)
|
||||
id = (self.maxIds[tv] or 0) + 1
|
||||
self.maxIds[tv] = id
|
||||
self.ids[v] = id
|
||||
end
|
||||
return tostring(id)
|
||||
end
|
||||
|
||||
-- dummy function; defined later
|
||||
function Inspector:putValue(_: any):nil
|
||||
end
|
||||
|
||||
function Inspector:putKey(k: any): nil
|
||||
if isIdentifier(k) then
|
||||
self:puts(k as string)
|
||||
return
|
||||
end
|
||||
self:puts("[")
|
||||
self:putValue(k)
|
||||
self:puts("]")
|
||||
end
|
||||
|
||||
function Inspector:putTable(t: table): nil
|
||||
if t == inspect.KEY or t == inspect.METATABLE then
|
||||
self:puts(tostring(t))
|
||||
elseif self:alreadyVisited(t) then
|
||||
self:puts('<table ', self:getId(t), '>')
|
||||
elseif self.level >= self.depth then
|
||||
self:puts('{...}')
|
||||
else
|
||||
if self.tableAppearances[t] > 1 then self:puts('<', self:getId(t), '>') end
|
||||
|
||||
local nonSequentialKeys, nonSequentialKeysLength, sequenceLength = getNonSequentialKeys(t)
|
||||
local mt = getmetatable(t)
|
||||
|
||||
self:puts('{')
|
||||
self:down(function()
|
||||
local count = 0
|
||||
for i=1, sequenceLength do
|
||||
if count > 0 then self:puts(',') end
|
||||
self:puts(' ')
|
||||
self:putValue(t[i])
|
||||
count = count + 1
|
||||
end
|
||||
|
||||
for i=1, nonSequentialKeysLength do
|
||||
local k = nonSequentialKeys[i]
|
||||
if count > 0 then self:puts(',') end
|
||||
self:tabify()
|
||||
self:putKey(k)
|
||||
self:puts(' = ')
|
||||
self:putValue(t[k])
|
||||
count = count + 1
|
||||
end
|
||||
|
||||
if type(mt) == 'table' then
|
||||
if count > 0 then self:puts(',') end
|
||||
self:tabify()
|
||||
self:puts('<metatable> = ')
|
||||
self:putValue(mt)
|
||||
end
|
||||
end)
|
||||
|
||||
if nonSequentialKeysLength > 0 or type(mt) == 'table' then -- result is multi-lined. Justify closing }
|
||||
self:tabify()
|
||||
elseif sequenceLength > 0 then -- array tables have one extra space before closing }
|
||||
self:puts(' ')
|
||||
end
|
||||
|
||||
self:puts('}')
|
||||
end
|
||||
end
|
||||
|
||||
function Inspector:putValue(v: any)
|
||||
local tv: string = type(v)
|
||||
if tv == 'string' then
|
||||
self:puts(smartQuote(escape(v as string)))
|
||||
elseif tv == 'number' or tv == 'boolean' or tv == 'nil' or
|
||||
tv == 'cdata' or tv == 'ctype' then
|
||||
self:puts(tostring(v as number))
|
||||
elseif tv == 'table' then
|
||||
self:putTable(v as table)
|
||||
else
|
||||
self:puts('<', tv, ' ', self:getId(v), '>')
|
||||
end
|
||||
end
|
||||
|
||||
-------------------------------------------------------------------
|
||||
|
||||
|
||||
function inspect.inspect(root: any, options: inspect.Options): string
|
||||
options = options or {}
|
||||
|
||||
local depth: integer = options.depth or (math.huge as integer)
|
||||
local newline: string = options.newline or '\n'
|
||||
local indent: string = options.indent or ' '
|
||||
local process: inspect.ProcessFunction = options.process
|
||||
|
||||
if process then
|
||||
root = processRecursive(process, root, {}, {})
|
||||
end
|
||||
|
||||
local inspector = setmetatable({
|
||||
depth = depth,
|
||||
level = 0,
|
||||
buffer = {},
|
||||
ids = {},
|
||||
maxIds = {},
|
||||
newline = newline,
|
||||
indent = indent,
|
||||
tableAppearances = countTableAppearances(root)
|
||||
} as Inspector, Inspector_mt)
|
||||
|
||||
inspector:putValue(root)
|
||||
|
||||
return table.concat(inspector.buffer)
|
||||
end
|
||||
|
||||
setmetatable(inspect, {
|
||||
__call = function(_, root: any, options: inspect.Options): string
|
||||
return inspect.inspect(root, options)
|
||||
end
|
||||
})
|
||||
|
||||
return inspect
|
||||
Loading…
Reference in New Issue
Block a user