prosody
22066b02887f
util/format.lua

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util/format.lua @ 12781:22066b02887f

util.startup: Provide a common Lua 5.3+ math.type() for Lua 5.2 Code deduplication
author Kim Alvefur <zash@zash.se>
date Wed, 19 Oct 2022 16:25:05 +0200
parent 12590:5eaf77114fdb
child 12975:d10957394a3c
comparison
equal deleted inserted replaced
12780:2c0c1b18a02b 12781:22066b02887f
9 local unpack = table.unpack; 9 local unpack = table.unpack;
10 local pack = table.pack; 10 local pack = table.pack;
11 local valid_utf8 = require "util.encodings".utf8.valid; 11 local valid_utf8 = require "util.encodings".utf8.valid;
12 local type = type; 12 local type = type;
13 local dump = require "util.serialization".new("debug"); 13 local dump = require "util.serialization".new("debug");
14 local num_type = math.type or function (n) 14 local num_type = math.type;
15 return n % 1 == 0 and n <= 9007199254740992 and n >= -9007199254740992 and "integer" or "float";
16 end
17 15
18 -- In Lua 5.3+ these formats throw an error if given a float 16 -- In Lua 5.3+ these formats throw an error if given a float
19 local expects_integer = { c = true, d = true, i = true, o = true, u = true, X = true, x = true, }; 17 local expects_integer = { c = true, d = true, i = true, o = true, u = true, X = true, x = true, };
20 -- In Lua 5.2 these throw an error given a negative number 18 -- In Lua 5.2 these throw an error given a negative number
21 local expects_positive = { o = true; u = true; x = true; X = true }; 19 local expects_positive = { o = true; u = true; x = true; X = true };