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authorBruce Hill <bruce@bruce-hill.com>2019-01-14 17:14:34 -0800
committerBruce Hill <bruce@bruce-hill.com>2019-01-14 17:14:57 -0800
commitddef8be3df626d63f6e575d4c1416295a22371ad (patch)
tree78af9584447b085f06d6412d2cc20137a460848b /compatibility/compatibility.nom
parent9fceff7e785bb234971b443809eef3da9051c598 (diff)
Moved compatibility to lib/ and fixed path searching for .peg files.
Diffstat (limited to 'compatibility/compatibility.nom')
-rw-r--r--compatibility/compatibility.nom132
1 files changed, 0 insertions, 132 deletions
diff --git a/compatibility/compatibility.nom b/compatibility/compatibility.nom
deleted file mode 100644
index 444be11..0000000
--- a/compatibility/compatibility.nom
+++ /dev/null
@@ -1,132 +0,0 @@
-#!/usr/bin/env nomsu -V6.14
-#
- This file contains code for defining ways to upgrade code between different versions
- of Nomsu.
-
-use "filesystem"
-
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-$UPGRADES = {}
-externally (upgrade to $version via $upgrade_fn) means:
- $UPGRADES.$version = $upgrade_fn
-$ACTION_UPGRADES = ({} with fallback $ -> {})
-externally (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
-
-externally [
- $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)
- 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 $tree
-
-externally ($tree upgraded from $start_version) means
- $tree upgraded from $start_version to (Nomsu version)
-
-externally ($tree upgraded to $end_version) means
- $tree upgraded from ($tree.version or (Nomsu version)) to $end_version
-
-externally ($tree upgraded) means
- $tree upgraded from ($tree.version or (Nomsu version)) to (Nomsu version)