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Phase 7b: null literal + x == null (retire ptr_null/ptr_is_null)

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`null` is now a real pointer literal and null-tests are comparisons, instead of
`ptr_null()` and `ptr_is_null(x)`:

  ptr_null()          -> null
  ptr_is_null(x)      -> (x == null)
  not ptr_is_null(x)  -> (x != null)

Mechanics: a new E_NULL primary (`null`, like true/false) lowers to the `null`
pointer; emit_bin's comparison path now picks `ptr` vs `i32` from operand type
(via llty), so `==`/`!=` work on any pointer/record/slice. The two intrinsics are
deleted.

Two reseeds: (A) add the literal + ptr comparison keeping the intrinsics; (B)
migrate all 182 call sites (compiler + runtime, via a balanced-paren script that
skips string-literal args and rewrites `not ptr_is_null` to `!= null`) and delete
the intrinsics. Node/Val/Buf/Tok field defaults now read `ptr = null`.

Vocabulary drops the two from LUDIC_INTRINSICS; `null` joins true/false as a
language constant (grammar + ludic_syntax.h). LANGUAGE.md notes the literal.
Reseeded (21664 lines); C-free fixpoint holds; goldens identical; 17/17; vocab +
doc-fences clean.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
Orkun ÇAKILKAYA 2026-08-28 00:50:21 +03:00
parent ddb1af3008
commit 70ab79a4e9
34 changed files with 5064 additions and 5124 deletions
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4
tools/editors/shared/ludic.tmLanguage.json
View file

@ -167,7 +167,7 @@
{ "name": "keyword.other.ludic", "match": "\\b(import|extern)\\b" },
{ "name": "storage.type.ludic", "match": "\\b(program|property|model|enum|ui|const|var|let|fn|handler|entry|state)\\b" },
{ "name": "support.type.primitive.ludic", "match": "\\b(int|fixed|bool|entity|str|ptr|void)\\b" },
{ "name": "constant.language.boolean.ludic", "match": "\\b(true|false)\\b" },
{ "name": "constant.language.boolean.ludic", "match": "\\b(true|false|null)\\b" },
{ "name": "constant.language.phase.ludic", "match": "\\b(Start|Input|FixedUpdate|Update|LateUpdate|Render)\\b" }
]
},
@ -198,7 +198,7 @@
{
"comment": "compiler intrinsics — these lower straight to libc or the OS",
"name": "support.function.intrinsic.ludic",
"match": "\\b(mem_alloc|mem_realloc|mem_free|mem_copy|mem_set|peek8|poke8|peek32|poke32|peekp|pokep|peekf|pokef|ptr_add|ptr_null|ptr_is_null|as_fixed|as_int|file_open|file_read|file_write|file_seek|file_tell|file_close|read_byte|write_byte|print_str|str_len|os_exit|os_time|os_argc|os_arg|file_stderr|is_windowed|game_title|win_open|win_poll|win_present|win_running|win_close)\\b(?=\\s*\\()"
"match": "\\b(mem_alloc|mem_realloc|mem_free|mem_copy|mem_set|peek8|poke8|peek32|poke32|peekp|pokep|peekf|pokef|ptr_add|as_fixed|as_int|file_open|file_read|file_write|file_seek|file_tell|file_close|read_byte|write_byte|print_str|str_len|os_exit|os_time|os_argc|os_arg|file_stderr|is_windowed|game_title|win_open|win_poll|win_present|win_running|win_close)\\b(?=\\s*\\()"
}
]
},