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authorLancer11211 <109360848+Lancer11211@users.noreply.github.com>2022-07-26 07:40:49 +0200
committerGitHub <noreply@github.com>2022-07-26 07:40:49 +0200
commitefd5c571bf3de5c3b496be92fcf9a403898084f1 (patch)
tree96783d605424787dd811f5372152a4101800a395 /compiler/ast.nim
parent62b81d7f109b2ec4b249a0abea121d7e0bc14d86 (diff)
downloadNim-efd5c571bf3de5c3b496be92fcf9a403898084f1.tar.gz
.forbids pragma: defining forbidden tags (#20050)
* .forbids pragma: defining illegal effects for proc types

This patch intends to define the opposite of the .tags pragma: a way to define effects which are not allowed in a proc.

* updated documentation and changelogs for the forbids pragma

* renamed notTagEffects to forbiddenEffects

* corrected issues of forbids pragma

the forbids pragma didn't handle simple restrictions properly and it also had issues with subtyping

* removed incorrect character from changelog

* added test to cover the interaction of methods and the forbids pragma

* covering the interaction of the tags and forbids pragmas

* updated manual about the forbids pragma

* removed useless statement

* corrected the subtyping of proc types using the forbids pragma

* updated manual for the forbids pragma

* updated documentations for forbids pragma

* updated nim docs

* updated docs with rsttester.nim

* regenerated documentation

* updated rst docs

* Update changelog.md

Co-authored-by: ringabout <43030857+ringabout@users.noreply.github.com>

* updated changelog

* corrected typo

Co-authored-by: ringabout <43030857+ringabout@users.noreply.github.com>
Diffstat (limited to 'compiler/ast.nim')
-rw-r--r--compiler/ast.nim3
1 files changed, 2 insertions, 1 deletions
diff --git a/compiler/ast.nim b/compiler/ast.nim
index 6610a1333..27e4fab63 100644
--- a/compiler/ast.nim
+++ b/compiler/ast.nim
@@ -347,7 +347,8 @@ const
   ensuresEffects* = 2     # 'ensures' annotation
   tagEffects* = 3       # user defined tag ('gc', 'time' etc.)
   pragmasEffects* = 4    # not an effect, but a slot for pragmas in proc type
-  effectListLen* = 5    # list of effects list
+  forbiddenEffects* = 5    # list of illegal effects
+  effectListLen* = 6    # list of effects list
   nkLastBlockStmts* = {nkRaiseStmt, nkReturnStmt, nkBreakStmt, nkContinueStmt}
                         # these must be last statements in a block