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87ee9c84cb8cba3a404af235755c80037aefea6b
Nim/compiler
History
ringabout 87ee9c84cb makes DuplicateModuleImport back to an error (#25178) 
fixes #24998

Basically it retraces back to the situation before
https://github.com/nim-lang/Nim/pull/18366 and
https://github.com/nim-lang/Nim/pull/18362, i.e.

```nim
import fuzz/a
import fuzz/a
```

```nim
import fuzz/a
from buzz/a
```

```nim
import fuzz/a except nil
from fuzz/a import addInt
```

All of these cases are now flagged as invalid and triggers a
redefinition error, i.e., each module name importing is treated as
consistent as the symbol definition


kinda annoying for importing/exporting with `when conditions` though

ref https://github.com/nim-lang/Nim/issues/18762
https://github.com/nim-lang/Nim/issues/20907

```nim
from std/strutils import toLower
when not defined(js):
  from std/strutils import toUpper
```
2025-09-18 20:50:46 +02:00
..
ic
make PNode.typ a private field (#24326)
2024-10-18 16:52:07 +02:00
plugins
Adds support for custom ASTs in the Nim parser (#23417)
2024-03-18 20:27:00 +01:00
aliasanalysis.nim
use strictdefs for compiler (#22365)
2023-08-06 14:26:21 +02:00
aliases.nim
type refactor: part 4 (#23077)
2023-12-15 10:20:57 +01:00
ast.nim
fixes #25114 (#25124)
2025-08-27 12:23:04 +02:00
astalgo.nim
bring back id table algorithm instead of std table [backport:2.2] (#24930)
2025-05-06 09:36:20 +02:00
astmsgs.nim
fixes #23494; Wrong type in object construction error message (#23504)
2024-04-16 12:46:59 +02:00
astyaml.nim
refactor: The popular 'r' field is now named 'snippet' (#23829)
2024-07-12 15:23:09 +02:00
bitsets.nim
NIR: Nim intermediate representation (#22777)
2023-10-11 17:44:14 +02:00
btrees.nim
use strictdefs for compiler (#22365)
2023-08-06 14:26:21 +02:00
cbuilderbase.nim
fixes nightlies failures (#24456)
2024-11-19 08:51:54 +01:00
cbuilderdecls.nim
fix #pragma pack generation regression in packed case objects (#24461)
2024-11-21 14:29:18 +03:00
cbuilderexprs.nim
cbuilder: use constants for type names, some cleanups (#24438)
2024-11-18 17:34:37 +01:00
cbuilderstmts.nim
cbuilder: use constants for type names, some cleanups (#24438)
2024-11-18 17:34:37 +01:00
ccgcalls.nim
conv needs to be picky about aliases and introduces a temp for addr conv (#24818)
2025-04-01 09:37:54 +02:00
ccgexprs.nim
fixes #25109; fixes #25111 transform addr(conv(x)) -> conv(addr(x)) (#25112)
2025-08-21 13:31:55 +02:00
ccgliterals.nim
cbuilder: use constants for type names, some cleanups (#24438)
2024-11-18 17:34:37 +01:00
ccgmerge_unused.nim
removed unused sections in codegen (#20976)
2022-11-30 21:51:13 +01:00
ccgreset.nim
cbuilder: use constants for type names, some cleanups (#24438)
2024-11-18 17:34:37 +01:00
ccgstmts.nim
fixes #24770; Thread local not registed as GC root when =destroy exists (#24776)
2025-03-12 17:29:30 +01:00
ccgthreadvars.nim
cbuilder: use constants for type names, some cleanups (#24438)
2024-11-18 17:34:37 +01:00
ccgtrav.nim
cbuilder: use constants for type names, some cleanups (#24438)
2024-11-18 17:34:37 +01:00
ccgtypes.nim
fixes #24844; Invalid C codegen refc with generic types containing gc memory (#25160)
2025-09-15 15:03:22 +02:00
ccgutils.nim
implements internal sink copy (#24747)
2025-03-10 11:20:44 +01:00
cgen.nim
fixes #24997; {.global.} variable in recursive function (#25016)
2025-06-27 10:17:16 +02:00
cgendata.nim
cbuilder: second half of cgen (#24432)
2024-11-14 16:28:13 +01:00
cgmeth.nim
make PNode.typ a private field (#24326)
2024-10-18 16:52:07 +02:00
closureiters.nim
Fixed typos in comments (#25071)
2025-07-23 23:50:03 +02:00
cmdlinehelper.nim
fixes #23429; rework --verbosity with warnings/hints (#23441)
2024-03-28 11:04:12 +01:00
commands.nim
WIP: adds NIF code generator for interop with Nimony (#24966)
2025-05-26 15:42:19 +02:00
compiler.nimble
Create compiler and nimsuggest packages (#22118)
2023-06-18 16:06:14 +02:00
concepts.nim
two small concept patches (#25076)
2025-09-11 20:50:11 +08:00
condsyms.nim
makes DuplicateModuleImport back to an error (#25178)
2025-09-18 20:50:46 +02:00
debuginfo.nim
happy new year
2017-01-07 22:35:09 +01:00
debugutils.nim
Extend and document compiler debugging utilities (#19841)
2022-06-10 20:40:08 +02:00
depends.nim
prepare for the enforcement of std prefix (#22873)
2023-10-29 14:48:11 +01:00
dfa.nim
fixes lastRead uses the when nimvm branch (#24834)
2025-04-02 09:29:15 +02:00
docgen2.nim
use strictdefs for compiler (#22365)
2023-08-06 14:26:21 +02:00
docgen.nim
rework tags (#24944)
2025-05-11 06:40:46 +02:00
enumtostr.nim
account for invalid data in enum $ on arc/orc (#24886)
2025-04-18 05:32:49 +02:00
errorhandling.nim
IC: progress and refactorings (#22961)
2023-11-20 21:12:13 +01:00
evalffi.nim
make PNode.typ a private field (#24326)
2024-10-18 16:52:07 +02:00
evaltempl.nim
make PNode.typ a private field (#24326)
2024-10-18 16:52:07 +02:00
expanddefaults.nim
remove fauxMatch for tyFromExpr, remove tyProxy and tyUnknown aliases (#24018)
2024-08-28 20:46:36 +02:00
extccomp.nim
Create Mac app bundle for GUI apps on macOS when --app:gui is used (#25042)
2025-07-14 23:14:06 +02:00
filter_tmpl.nim
prepare for the enforcement of std prefix (#22873)
2023-10-29 14:48:11 +01:00
filters.nim
prepare for the enforcement of std prefix (#22873)
2023-10-29 14:48:11 +01:00
gorgeimpl.nim
prepare for the enforcement of std prefix (#22873)
2023-10-29 14:48:11 +01:00
guards.nim
make PNode.typ a private field (#24326)
2024-10-18 16:52:07 +02:00
hlo.nim
Fix #22604: Make endsInNoReturn traverse the tree (#22612)
2023-09-01 06:41:39 +02:00
idents.nim
prepare for the enforcement of std prefix (#22873)
2023-10-29 14:48:11 +01:00
importer.nim
check if unused import warning is enabled before adding import to stack (#24554)
2024-12-20 22:09:03 +01:00
index.nim
walkDirRecFilter, update doc CI filter, compiler/index.nim for docs + various other fixes (#14501)
2020-06-01 19:21:41 +02:00
injectdestructors.nim
fixes inefficient codegen for field return (#24874)
2025-07-18 21:30:32 +02:00
installer.ini
bundles nimony (#24968)
2025-05-27 11:45:28 +02:00
int128.nim
fixes yet another strictdefs bug (#23069)
2023-12-15 08:13:25 +01:00
isolation_check.nim
docs: fix typos (#24573)
2024-12-27 19:42:18 +01:00
jsgen.nim
fixes #25007; implements setLenUninit for refc (#25022)
2025-07-14 23:19:58 +02:00
jstypes.nim
fixes #25043: js tyUserTypeClass internal error (#25044)
2025-07-14 23:15:44 +02:00
lambdalifting.nim
don't traverse inner procs to lift locals in closure iters (#24876)
2025-04-15 19:29:46 +02:00
layeredtable.nim
bring back id table algorithm instead of std table [backport:2.2] (#24930)
2025-05-06 09:36:20 +02:00
layouter.nim
nimpretty: check the rendered AST for wrong output (#23057)
2023-12-13 10:39:10 +01:00
lexer.nim
fixes yet another strictdefs bug (#23069)
2023-12-15 08:13:25 +01:00
liftdestructors.nim
fixes #24719; improves order of destruction (#25060)
2025-07-18 23:02:16 +08:00
liftlocals.nim
make PNode.typ a private field (#24326)
2024-10-18 16:52:07 +02:00
lineinfos.nim
give hint for forward declarations with unknown raises effects (#24767)
2025-03-11 14:24:45 +01:00
linter.nim
make linter use lineinfo to check originating package (#24270)
2024-10-11 12:00:05 +02:00
llstream.nim
repl: support eof, define object with fields (#24784)
2025-03-25 07:41:17 +01:00
lookups.nim
makes DuplicateModuleImport back to an error (#25178)
2025-09-18 20:50:46 +02:00
lowerings.nim
make PNode.typ a private field (#24326)
2024-10-18 16:52:07 +02:00
macrocacheimpl.nim
IC: next steps (#16632)
2021-01-12 09:36:51 +01:00
magicsys.nim
fixes address of sink parameters (#24924)
2025-05-01 07:49:46 +02:00
main.nim
WIP: adds NIF code generator for interop with Nimony (#24966)
2025-05-26 15:42:19 +02:00
mangleutils.nim
apply the new mangle algorithm to JS backend for parameters and procs (#23476)
2024-04-05 08:54:48 +02:00
modulegraphs.nim
NimSuggest: Fix for the inlay exception hints with generic procs (#23610)
2025-07-18 08:44:36 +02:00
modulepaths.nim
make mangled module names shorter (#24976)
2025-06-05 08:34:52 +02:00
modules.nim
adds a getter/setter for owner (#24318)
2024-10-17 15:16:57 +02:00
msgs.nim
Fixes #23624 "nim check crash" (#23625)
2024-09-16 20:45:00 +02:00
nifgen.nim
fixes #25007; implements setLenUninit for refc (#25022)
2025-07-14 23:19:58 +02:00
nilcheck.nim
make PNode.typ a private field (#24326)
2024-10-18 16:52:07 +02:00
nim.cfg
makes DuplicateModuleImport back to an error (#25178)
2025-09-18 20:50:46 +02:00
nim.nim
fixes #23848; The comand nim gendepend defaults to ORC (#23851)
2024-07-17 18:25:19 +02:00
nimblecmd.nim
fixes yet another strictdefs bug (#23069)
2023-12-15 08:13:25 +01:00
nimconf.nim
fixes yet another strictdefs bug (#23069)
2023-12-15 08:13:25 +01:00
nimeval.nim
fixes addr/hiddenAddr in strictdefs (#23477)
2024-04-10 14:41:16 +02:00
nimlexbase.nim
prepare for the enforcement of std prefix (#22873)
2023-10-29 14:48:11 +01:00
nimpaths.nim
prepare for the enforcement of std prefix (#22873)
2023-10-29 14:48:11 +01:00
nimsets.nim
make PNode.typ a private field (#24326)
2024-10-18 16:52:07 +02:00
nodejs.nim
prepare for the enforcement of std prefix (#22873)
2023-10-29 14:48:11 +01:00
nodekinds.nim
opensym as node kind + fixed experimental switch (#23892)
2024-08-12 15:33:26 +02:00
nversion.nim
warn on set types bigger than max size, default to 0..255 for int literals (#21659)
2023-04-17 20:55:22 +02:00
optimizer.nim
fixes #24806; don't elide wasMoved when syms are used in blocks (#24831)
2025-04-03 12:54:00 +02:00
options.nim
WIP: adds NIF code generator for interop with Nimony (#24966)
2025-05-26 15:42:19 +02:00
packagehandling.nim
use strictdefs for compiler (#22365)
2023-08-06 14:26:21 +02:00
packages.nim
make linter use lineinfo to check originating package (#24270)
2024-10-11 12:00:05 +02:00
parampatterns.nim
allow conversions between var types of range types and base types (#24037)
2024-09-03 09:18:38 +02:00
parser.nim
Improve error message for keywords as parameters (#25052)
2025-07-14 23:15:02 +02:00
passaux.nim
test removing dollar for objects out of system (#20242)
2022-08-24 09:44:16 +02:00
passes.nim
improve passes.nim (#24376)
2024-10-29 08:01:44 +01:00
pathutils.nim
prepare for the enforcement of std prefix (#22873)
2023-10-29 14:48:11 +01:00
patterns.nim
clean up opensym encounters in compiler (#24866)
2025-04-12 08:39:11 +02:00
pipelines.nim
WIP: adds NIF code generator for interop with Nimony (#24966)
2025-05-26 15:42:19 +02:00
pipelineutils.nim
replaces implicit passes array registed at runtime with explicit function calls; simplify compilation pipeline (#21444)
2023-03-03 07:36:38 +01:00
platform.nim
prepare for the enforcement of std prefix (#22873)
2023-10-29 14:48:11 +01:00
pluginsupport.nim
refactoring: fewer global variables
2018-05-27 19:19:12 +02:00
pragmas.nim
allow setting arbitrary size for importc types (#24868)
2025-04-12 17:55:11 +02:00
prefixmatches.nim
prepare for the enforcement of std prefix (#22873)
2023-10-29 14:48:11 +01:00
procfind.nim
fixes addr/hiddenAddr in strictdefs (#23477)
2024-04-10 14:41:16 +02:00
pushpoppragmas.nim
fixes push warnings for sempass2 (#23603)
2024-09-03 09:19:52 +02:00
readme.md
clean up the documentation (#22196)
2023-07-02 22:36:05 +02:00
renderer.nim
clean up opensym encounters in compiler (#24866)
2025-04-12 08:39:11 +02:00
renderverbatim.nim
prepare for the enforcement of std prefix (#22873)
2023-10-29 14:48:11 +01:00
reorder.nim
clean up opensym encounters in compiler (#24866)
2025-04-12 08:39:11 +02:00
rodutils.nim
NIR: C codegen additions (#22914)
2023-11-06 18:33:28 +01:00
ropes.nim
replaces doAssert false with raiseAssert for unreachable branches, which works better with strictdefs (#22436)
2023-08-10 14:26:40 +02:00
saturate.nim
fix warnings for deprecated low and high (#15291)
2020-09-11 01:04:07 +02:00
scriptconfig.nim
prepare for the enforcement of std prefix (#22873)
2023-10-29 14:48:11 +01:00
sem.nim
fixes #24361 (#25179)
2025-09-18 19:44:39 +02:00
semcall.nim
NimSuggest: Fix for the inlay exception hints with generic procs (#23610)
2025-07-18 08:44:36 +02:00
semdata.nim
fixes #25007; implements setLenUninit for refc (#25022)
2025-07-14 23:19:58 +02:00
semexprs.nim
fixes #24361 (#25179)
2025-09-18 19:44:39 +02:00
semfields.nim
fixes #24339; underscores used with fields and fieldPairs (#24341)
2025-02-27 16:48:15 +01:00
semfold.nim
folding const expressions with branching logic (#24689)
2025-03-11 10:01:32 +01:00
semgnrc.nim
don't warn/error symbols in semGenericStmt/templates (#24907)
2025-04-29 11:08:10 +02:00
seminst.nim
WIP: adds NIF code generator for interop with Nimony (#24966)
2025-05-26 15:42:19 +02:00
semmacrosanity.nim
fixes #24361 (#25179)
2025-09-18 19:44:39 +02:00
semmagic.nim
fixes #25007; implements setLenUninit for refc (#25022)
2025-07-14 23:19:58 +02:00
semobjconstr.nim
minor improvements of error messages of objvariants (#25040)
2025-09-15 15:04:35 +02:00
semparallel.nim
make PNode.typ a private field (#24326)
2024-10-18 16:52:07 +02:00
sempass2.nim
fixes #25117; requiresInit not checked for result if it has been used (#25151)
2025-09-09 16:22:05 +02:00
semstmts.nim
Allow assignment of nested non-closure procs to globals (#25154)
2025-09-11 09:22:47 +02:00
semstrictfuncs.nim
alternative, much simpler algorithm for strict func checking (#21066)
2022-12-11 16:58:50 +01:00
semtempl.nim
don't warn/error symbols in semGenericStmt/templates (#24907)
2025-04-29 11:08:10 +02:00
semtypes.nim
fixes #25120; don't generate hooks for NimNode (#25144)
2025-09-09 16:17:22 +02:00
semtypinst.nim
bring back id table algorithm instead of std table [backport:2.2] (#24930)
2025-05-06 09:36:20 +02:00
sighashes.nim
remove nontoplevel type hack + consider symbol disamb in type hash (#23969)
2024-08-16 06:33:43 +02:00
sigmatch.nim
NimSuggest: Fix for the inlay exception hints with generic procs (#23610)
2025-07-18 08:44:36 +02:00
sinkparameter_inference.nim
IC: progress and refactorings (#22961)
2023-11-20 21:12:13 +01:00
sizealignoffsetimpl.nim
make PNode.typ a private field (#24326)
2024-10-18 16:52:07 +02:00
sourcemap.nim
chore: fix some typos (#23412)
2024-03-16 08:35:18 +08:00
spawn.nim
make PNode.typ a private field (#24326)
2024-10-18 16:52:07 +02:00
suggest.nim
makes DuplicateModuleImport back to an error (#25178)
2025-09-18 20:50:46 +02:00
suggestsymdb.nim
NimSuggest: Fix for the inlay exception hints with generic procs (#23610)
2025-07-18 08:44:36 +02:00
syntaxes.nim
fixes addr/hiddenAddr in strictdefs (#23477)
2024-04-10 14:41:16 +02:00
tccgen.nim
replaces doAssert false with raiseAssert for unreachable branches, which works better with strictdefs (#22436)
2023-08-10 14:26:40 +02:00
transf.nim
fixes #24093; Dereferencing result of cast in single expression triggers unnecessary copy (#25143)
2025-09-09 16:16:12 +02:00
trees.nim
clean up opensym encounters in compiler (#24866)
2025-04-12 08:39:11 +02:00
treetab.nim
fixes #25114 (#25124)
2025-08-27 12:23:04 +02:00
typeallowed.nim
include new concepts in typeclasses, makes containsGenericType work (#24453)
2024-11-19 10:06:41 +01:00
types.nim
NimSuggest: Fix for the inlay exception hints with generic procs (#23610)
2025-07-18 08:44:36 +02:00
typesrenderer.nim
prepare for the enforcement of std prefix (#22873)
2023-10-29 14:48:11 +01:00
varpartitions.nim
fixes #23973; fixes #23974; Memory corruption with lent and ORC (#23981)
2024-08-20 11:57:47 +02:00
vm.nim
fixes #24361 (#25179)
2025-09-18 19:44:39 +02:00
vmconv.nim
Types: Refactorings; step 1 (#23055)
2023-12-12 16:54:50 +01:00
vmdef.nim
fixes #25114 (#25124)
2025-08-27 12:23:04 +02:00
vmdeps.nim
fixes #23564; hasCustomPragma skips alises types (#24994)
2025-06-27 10:18:12 +02:00
vmgen.nim
fixes #25114 (#25124)
2025-08-27 12:23:04 +02:00
vmhooks.nim
replaces doAssert false with raiseAssert for unreachable branches, which works better with strictdefs (#22436)
2023-08-10 14:26:40 +02:00
vmmarshal.nim
fixes addr/hiddenAddr in strictdefs (#23477)
2024-04-10 14:41:16 +02:00
vmops.nim
fixes #24941; missing < (less than), cmp for cstring (#24942)
2025-05-10 08:26:21 +02:00
vmprofiler.nim
prepare for the enforcement of std prefix (#22873)
2023-10-29 14:48:11 +01:00
vtables.nim
fixes #24476; remove proc type cast if they are same types for backends (#24480)
2024-11-27 17:36:57 +01:00
wordrecg.nim
Asm syntax pragma (#23119)
2023-12-25 07:12:54 +01:00

readme.md

Nim Compiler

  • This directory contains the Nim compiler written in Nim.
  • Note that this code has been translated from a bootstrapping version written in Pascal.
  • So the code is not a poster child of good Nim code.

See Internals of the Nim Compiler for more information.