ludic/docs/language/operators/op-access.md
Orkuncakilkaya 647dfec334 feat(compiler): list literals, typed compound assignment, file:line diagnostics
- `[a, b, c]` list literals (E_LIST → emit_list); static_type learns
  slice-element, `new T`, list, string and literal kinds
- `x op= y` lowers through the same path as `x = x op y` (emit_bin_vals):
  fixed `*=`/`/=` use the Q16.16 64-bit paths, string `+=` concatenates,
  int→long widens; unary `-` keeps a fixed operand's type (arith_ty)
- one `unescape()` table for "strings", 'chars' and `interpolation`;
  `'\''`, `'\\'`, `'\"'` no longer read as 0; unterminated char literals
  and unexpected characters are errors instead of silently skipped
- every diagnostic is `file:line: error: msg` (g_parse_file / g_err_file,
  Node.file + Node.line set by node()); tok_desc() in expectation errors;
  duplicate `function` names and unknown `phase` names are reported in
  source terms (phase_id used to default unknown phases to Overlay)
- interpolation holes skip braces inside string literals
- hand-IR preludes move from the user `@fn_` prefix to `@lp_` so a user
  `is_ws` / `str_eq` / `path_join` no longer collides at link time
- `@ClearColor(expr)` accepts any constant expression; `Os.pid()` added
  (docs page + inventory); `str_starts()` in support/str
- main.ludic: `else if` flag ladder, char literals, stale script comments
- examples/lang/operators.ludic covers all of the above; os.ludic covers
  Os.pid; docs pages for Os.pid and the Overlay phase; ten changesets
- reseeded: selfhost/ludicc.seed.ll is the new compiler's own fixpoint

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
2026-09-05 01:12:16 +03:00

953 B

id name category kind sig tip order
op-access Member & index operators operator x.field buffer[i] text[a..b] Field access, element index, and string slice — usable as value or target. 6

The access operators reach into a compound value. value.field reads or writes a property field and chains freely (route.next.column); buffer[index] reads or writes one element of a slice or raw buffer; and text[start..end] produces a fresh substring of the bytes in the half-open range, while text[index] reads a single byte as an int code point. Each form works both as a value and as an assignment target, and they compose — route[index].column = 0 is one address computation. Field access also binds method-style calls like Screen.fill_rectangle.

let head_column: int = segments[0].column
segments[0].column = head_column + 1
let extension: string = file_name[len(file_name) - 4..len(file_name)]