131 lines
5.2 KiB
Plaintext
131 lines
5.2 KiB
Plaintext
#!/usr/bin/env nomsu -V6.15.13.8
|
|
#
|
|
This file contains code for defining ways to upgrade code between different versions
|
|
of Nomsu.
|
|
|
|
use "filesystem"
|
|
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
$UPGRADES = {}
|
|
$ACTION_UPGRADES = ({} with fallback $ -> {})
|
|
external:
|
|
(upgrade to $version via $upgrade_fn) means:
|
|
$UPGRADES.$version = $upgrade_fn
|
|
|
|
(upgrade action $stub to $version via $upgrade_fn) means:
|
|
$ACTION_UPGRADES.$version.$stub = $upgrade_fn
|
|
|
|
(upgrade $tree to $version as $body) parses as
|
|
upgrade to $version via (($ $end_version) -> ($ with $tree -> $body))
|
|
|
|
(upgrade action $actions to $version as $body) compiles to:
|
|
if ($actions is "Action" syntax tree):
|
|
$actions = \[$actions]
|
|
$lua = (Lua "")
|
|
for $action in $actions:
|
|
$replacements = {}
|
|
for $i in 1 to (size of $action):
|
|
if ($action.$i is "Var" syntax tree):
|
|
$replacements.($action.$i.1) = "\(\$tree as lua id)[\$i]"
|
|
define mangler
|
|
(make tree $t) means:
|
|
when:
|
|
($t is "Var" syntax tree):
|
|
if $replacements.($t.1):
|
|
return $replacements.($t.1)
|
|
..else:
|
|
external ($needs_mangle = (yes))
|
|
return ("
|
|
SyntaxTree{type=\(quote $t.type), source=\(quote "\($t.source)"), \(quote (mangle $t.1))}
|
|
")
|
|
|
|
($t is syntax tree):
|
|
$args = []
|
|
for $k = $v in $t:
|
|
if ((type of $k) == "number"):
|
|
$args, add (make tree $v)
|
|
..else:
|
|
$args, add "\($k)=\(make tree $v)"
|
|
return "SyntaxTree{\($args, joined with ", ")}"
|
|
|
|
else:
|
|
return (quote $t)
|
|
|
|
unless ("\$lua" == ""):
|
|
$lua, add "\n"
|
|
|
|
$retval = (make tree $body)
|
|
$lua, add
|
|
Lua ("
|
|
upgrade_action_1_to_2_via(\(quote $action.stub), \($version as lua expr), function(\
|
|
..\(\$tree as lua id))
|
|
return \$retval
|
|
end)
|
|
")
|
|
return $lua
|
|
|
|
[
|
|
$tree upgraded from $start_version to $end_version
|
|
$tree upgraded to $end_version from $start_version
|
|
] all mean:
|
|
unless ($tree is syntax tree): return $tree
|
|
($ver as list) means (($ as number) for $ in $ver matching "[0-9]+")
|
|
(Ver $) means:
|
|
[$lib, $ver] = ($, match "(.*)/([0-9.]+)")
|
|
if $lib:
|
|
return {.lib = $lib, .version = ($ver as list)}
|
|
return {.version = ($ as list)}
|
|
$start = (Ver $start_version)
|
|
$end = (Ver $end_version)
|
|
$end.lib or= $start.lib
|
|
assume $start.lib == $end.lib
|
|
$seen = {}
|
|
$versions = {}
|
|
for $v = $ in $UPGRADES:
|
|
$versions.$v = (yes)
|
|
|
|
for $v = $ in $ACTION_UPGRADES:
|
|
$versions.$v = (yes)
|
|
|
|
$versions = [: for $v = $ in $versions: if ((Ver $v).lib == $start.lib): add $v]
|
|
sort $versions by $ -> ($ as list)
|
|
for $ver in $versions:
|
|
if (($ver as list) <= $start.version): do next $ver
|
|
if (($ver as list) > $end.version): stop $ver
|
|
if $ACTION_UPGRADES.$ver:
|
|
$tree =
|
|
$tree with $ ->:
|
|
if (($ is "Action" syntax tree) and $ACTION_UPGRADES.$ver.($.stub)):
|
|
$with_upgraded_args = {
|
|
: for $k = $v in $:
|
|
add $k = ($v upgraded from $start_version to $end_version)
|
|
}
|
|
set $with_upgraded_args's metatable to ($'s metatable)
|
|
return ($ACTION_UPGRADES.$ver.($.stub) $with_upgraded_args $end_version)
|
|
|
|
if $UPGRADES.$ver:
|
|
$with_upgraded_args = {
|
|
: for $k = $v in $tree:
|
|
add $k = ($v upgraded from $start_version to $end_version)
|
|
}
|
|
set $with_upgraded_args's metatable to ($tree's metatable)
|
|
$tree = ($UPGRADES.$ver $with_upgraded_args $end_version)
|
|
|
|
if ($tree.version != $end_version):
|
|
$tree = (SyntaxTree {: for $k = $v in $tree: add $k = $v})
|
|
$tree.version = $end_version
|
|
if $tree.shebang:
|
|
$tree.shebang = "#!/usr/bin/env nomsu -V\$end_version\n"
|
|
|
|
return $tree
|
|
|
|
($tree upgraded from $start_version) means
|
|
$tree upgraded from $start_version to (Nomsu version)
|
|
|
|
($tree upgraded to $end_version) means
|
|
$tree upgraded from ($tree.version or (Nomsu version)) to $end_version
|
|
|
|
($tree upgraded) means
|
|
$tree upgraded from ($tree.version or (Nomsu version)) to (Nomsu version)
|