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util/xpcall.lua @ 13134:638f627e707f
util.datamanager: Add O(1) list indexing with on-disk index
Index file contains offsets and lengths of each item() which allows
seeking directly to each item and reading it without parsing the entire
file.
Also allows tricks like binary search, assuming items have some defined
order.
We take advantage of the 1-based indexing in tables to store a magic
header in the 0 position, so that table index 1 ends up at file index 1.
author | Kim Alvefur <zash@zash.se> |
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date | Tue, 11 May 2021 02:09:56 +0200 |
parent | 12975:d10957394a3c |
rev | line source |
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9561
cfc7b2f7251e
util.xpcall, util.compat: Add non-hacky multi-argument xpcall() for Lua 5.1
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
1 local xpcall = xpcall; |
cfc7b2f7251e
util.xpcall, util.compat: Add non-hacky multi-argument xpcall() for Lua 5.1
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
2 |
cfc7b2f7251e
util.xpcall, util.compat: Add non-hacky multi-argument xpcall() for Lua 5.1
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
3 if select(2, xpcall(function (x) return x end, function () end, "test")) ~= "test" then |
12975
d10957394a3c
util: Prefix module imports with prosody namespace
Kim Alvefur <zash@zash.se>
parents:
9561
diff
changeset
|
4 xpcall = require"prosody.util.compat".xpcall; |
9561
cfc7b2f7251e
util.xpcall, util.compat: Add non-hacky multi-argument xpcall() for Lua 5.1
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
5 end |
cfc7b2f7251e
util.xpcall, util.compat: Add non-hacky multi-argument xpcall() for Lua 5.1
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
6 |
cfc7b2f7251e
util.xpcall, util.compat: Add non-hacky multi-argument xpcall() for Lua 5.1
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
7 return { |
cfc7b2f7251e
util.xpcall, util.compat: Add non-hacky multi-argument xpcall() for Lua 5.1
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
8 xpcall = xpcall; |
cfc7b2f7251e
util.xpcall, util.compat: Add non-hacky multi-argument xpcall() for Lua 5.1
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
9 }; |