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annotate tools/linedebug.lua @ 12636:e8934ce6ea0f

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util.stanza: Add method for extracting a single attribute value Sometimes you only care about a single attribute, but the child tag itself may be optional, leading to needing `tag and tag.attr.foo` or `stanza:find("tag@foo")`. The `:find()` method is fairly complex, so avoiding it for this kind of simpler use case is a win.
author Kim Alvefur <zash@zash.se>
date Wed, 17 Aug 2022 19:04:30 +0200
parents 5850d24a4ad3
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
11193
5850d24a4ad3 tools/linedebug: Print each line of source executed
Kim Alvefur <zash@zash.se>
parents:
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1 local data = {}
5850d24a4ad3 tools/linedebug: Print each line of source executed
Kim Alvefur <zash@zash.se>
parents:
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2 local getinfo = debug.getinfo;
5850d24a4ad3 tools/linedebug: Print each line of source executed
Kim Alvefur <zash@zash.se>
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3 local function linehook(ev, li)
5850d24a4ad3 tools/linedebug: Print each line of source executed
Kim Alvefur <zash@zash.se>
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4 local S = getinfo(2, "S");
5850d24a4ad3 tools/linedebug: Print each line of source executed
Kim Alvefur <zash@zash.se>
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5 if S and S.source and S.source:match"^@" then
5850d24a4ad3 tools/linedebug: Print each line of source executed
Kim Alvefur <zash@zash.se>
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6 local file = S.source:sub(2);
5850d24a4ad3 tools/linedebug: Print each line of source executed
Kim Alvefur <zash@zash.se>
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7 local lines = data[file];
5850d24a4ad3 tools/linedebug: Print each line of source executed
Kim Alvefur <zash@zash.se>
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8 if not lines then
5850d24a4ad3 tools/linedebug: Print each line of source executed
Kim Alvefur <zash@zash.se>
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9 lines = {};
5850d24a4ad3 tools/linedebug: Print each line of source executed
Kim Alvefur <zash@zash.se>
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10 data[file] = lines;
5850d24a4ad3 tools/linedebug: Print each line of source executed
Kim Alvefur <zash@zash.se>
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11 for line in io.lines(file) do
5850d24a4ad3 tools/linedebug: Print each line of source executed
Kim Alvefur <zash@zash.se>
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12 lines[#lines+1] = line;
5850d24a4ad3 tools/linedebug: Print each line of source executed
Kim Alvefur <zash@zash.se>
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13 end
5850d24a4ad3 tools/linedebug: Print each line of source executed
Kim Alvefur <zash@zash.se>
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14 end
5850d24a4ad3 tools/linedebug: Print each line of source executed
Kim Alvefur <zash@zash.se>
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15 io.stderr:write(ev, " ", file, " ", li, " ", lines[li], "\n");
5850d24a4ad3 tools/linedebug: Print each line of source executed
Kim Alvefur <zash@zash.se>
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16 end
5850d24a4ad3 tools/linedebug: Print each line of source executed
Kim Alvefur <zash@zash.se>
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17 end
5850d24a4ad3 tools/linedebug: Print each line of source executed
Kim Alvefur <zash@zash.se>
parents:
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18 debug.sethook(linehook, "l");