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Phase 7a: bitwise operators & | ^ << >> ~ (retire band/bor/shl/…)

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First step of the "stop feeling like C" pass. Bitwise ops were functions
(`band(x, MASK)`, `shl(a, 3)`); they are now real operators:

  band -> &   bor -> |   bxor -> ^   shl -> <<   shr -> >>   bnot -> ~

Precedence is Go-style so the C footgun is gone: `<<`/`>>`/`&` bind like `*`,
`|`/`^` like `+`, both tighter than comparison — `flags & MASK == 0` parses as
`(flags & MASK) == 0`. `>>` is logical (lshr), matching the old `shr`.

Mechanics: lexer tokenizes `<< >> & | ^ ~`; p_mul takes `<< >> &`, p_add takes
`| ^`, p_unary takes `~`; emit_bin routes them through the existing int arith
path (arith_code gains and/or/xor/shl/lshr) and E_UN handles `~`. The six
intrinsics are deleted.

Delivered as two reseeds: (A) add the operators keeping the intrinsics, (B)
migrate every call site to operator form (85 lines across compiler + runtime,
via a balanced-paren call->operator script; two multi-line big-endian reads in
image/truetype done by hand) and delete the intrinsics. Vocabulary drops the six
from LUDIC_INTRINSICS (ludic_syntax.h, grammar, LudicTokens.kt) and the grammar
gains a bitwise-operator rule. LANGUAGE.md precedence table rewritten.

Reseeded (21724 lines); C-free fixpoint holds; goldens byte-identical (the PNG
and TrueType decoders lean on these ops); 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 00:45:10 +03:00
parent 0e0c58519d
commit fcada23eba
18 changed files with 3417 additions and 3403 deletions
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6
tools/ludic-tools/ludic_syntax.h
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@ -175,12 +175,6 @@ static const LBuiltin LUDIC_INTRINSICS[] = {
{"write_byte","write_byte(b: int)","Write one byte to stdout."},
{"print_str","print_str(s: str)","Write a string to stdout."},
{"str_len","str_len(s: str) -> int","Length of a string in bytes."},
{"shl","shl(v: int, n: int) -> int","Shift left."},
{"shr","shr(v: int, n: int) -> int","Logical shift right."},
{"band","band(a: int, b: int) -> int","Bitwise and."},
{"bor","bor(a: int, b: int) -> int","Bitwise or."},
{"bxor","bxor(a: int, b: int) -> int","Bitwise xor."},
{"bnot","bnot(a: int) -> int","Bitwise not."},
{"os_exit","os_exit(code: int)","Terminate the process."},
{"os_time","os_time() -> int","Seconds since the epoch."},
{"is_windowed","is_windowed() -> bool","True when the build has a window."},