Orkuncakilkaya
e1d7797e29
Bindings now signal mutability the way Rust/Swift do, instead of `let` meaning
"local" and `var` meaning "module-level":
- `let x = e` -> immutable binding; a later `x = …` is a compile error
(`cannot assign to immutable 'x' … use var`).
- `var x = e` -> mutable binding, at local OR module scope (position decides
scope; the keyword decides mutability).
- `const` -> unchanged (compile-time).
Immutability is of the *binding*, not the object: `let n = new Node; n.kind = 1`
is fine (mutation through the reference); only rebinding `n` is rejected. The
check lives in emit_assign — a direct `name =` whose target is a `let` local
(loc_mut == 0) errors; field/index targets and `var`/param/loop bindings are
unaffected.
Delivered as three reseeds so the self-hosting compiler never had to compile
source its own rules would reject:
A) add `var` as a local statement + per-local mutability tracking (loc_mut),
no enforcement;
B) migrate every reassigned `let` -> `var` across the compiler, runtime and
examples (337 declarations), driven by a per-function, string/comment-aware
scan (binding targets only, never `x.f =` / `x[i] =`);
C) turn on the check. bootstrap-cfree (compiler vs its own source) and every
golden build (which splices the runtime) then proved zero reassigned `let`
was missed anywhere.
Also folded in: removed leftover debug instrumentation in block() (a `cur=` /
print_int(777…) trace on the separator-error path) and fixed parse.ludic's stale
header comment (no more `struct`). Reseeded (21711 lines); C-free fixpoint holds;
goldens identical; 17/17; vocab + doc-fences clean.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
22 lines
561 B
Text
22 lines
561 B
Text
# io.ludic — reading the input file and writing the output, plus tiny stdio.
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# The compiler reads one .ludic file whole and emits LLVM IR text to stdout.
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fn read_file(path: str) -> ptr {
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let f = file_open(path, "rb")
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if ptr_is_null(f) { return ptr_null() }
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file_seek(f, 0, 2)
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let n = file_tell(f)
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file_seek(f, 0, 0)
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let buf = mem_alloc(n + 1)
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file_read(f, buf, n)
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poke8(buf, n, 0)
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file_close(f)
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return buf
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}
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# length of a NUL-terminated buffer
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fn cstr_len(s: ptr) -> int {
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var n = 0
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while peek8(s, n) != 0 { n = n + 1 }
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return n
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}
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