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Switch back to tag:pop instead of tag:trim

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The tag operator should allow for all the user-defined tagging you need, and it already ensures the stack stays consistent so there's no need to be extra careful with tag:trim.
This commit is contained in:
Étienne Fildadut 2021-11-28 16:31:42 +01:00
parent 38b2a6ae69
commit 90e5a2d9cf
3 changed files with 8 additions and 11 deletions
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6
interpreter/interpreter.lua
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@ -47,9 +47,9 @@ run_line = function(state, line)
elseif line.type == "tag" then
local v, e = eval(state, line.expression)
if not v then return v, ("%s; at %s"):format(e, line.source) end
local i = tags:push(state, v)
tags:push(state, v)
v, e = run_block(state, line.child)
tags:trim(state, i-1)
tags:pop(state)
if e then return v, e end
if v then return v end
elseif line.type == "return" then
@ -180,7 +180,7 @@ local function run(state, block, resume_from_there, i, j)
local v, e = run_block(state, block, resume_from_there, i, j)
-- return to previous tag state
-- when resuming is done, tag stack pop when exiting the tag block
-- stray elements may be left on the stack if there is a return before we exit all the tag block, so we trim them
-- stray elements may be left on the stack if there is a return before we go up all the tag blocks, so we trim them
if resume_from_there then
tags:trim(state, tags_len)
end