self-host the el compiler
Today's milestone: dist/platform/elc compiles itself byte-for-byte to
itself (stage1 == stage2 == stage3 verified). The compiler is now a
real binary in the world.
What landed
- Spec rewrite (language.md) to truth — every feature marked
implemented / planned / not-in-this-language with no fiction.
- C runtime extension: 51 new builtins. JSON parser + accessors,
time, UUID, env, in-process state K/V, float formatting + math,
string ops (index_of, split, char_at, char_code, pad_left/right,
format), list ops (push, push_front, join, range), bool_to_str.
Runtime grew 631 → 1611 lines, header 171 → 247.
- Codegen fix: transform_implicit_return lifts a function's bare
trailing expression into an explicit return. Without it, lex(),
parse(), and every other implicit-return function returned 0/nil
and the whole pipeline produced empty C output.
- Codegen fix: index expressions dispatch on AST kind. obj["literal"]
→ el_get_field (map), arr[i] → el_list_get (list). Same Index node
in the parser, two different runtime calls.
- Codegen fix: skip emitting fn main() (collides with C main()) and
honor parsed return-type annotations so Void functions don't get
return-wrapped (return println(x) is a C type error).
- Parser: capture return-type identifier from -> Ret annotations.
- Lexer: + vessel keyword, + % operator, + \r escape.
- Runtime fix: el_list_append now allocates a fresh list rather than
realloc'ing the input. Realloc moved blocks made caller pointers
dangle, which was inserting garbage values into declared lists and
causing strcmp segfaults. Persistent allocation eliminates the
whole class of use-after-free at modest memory cost.
Bootstrap path
- One-shot Python helper translated elc-combined.el to C and
produced stage1. Helper is disposable; not committed.
- stage1 compiles elc-combined.el → stage2.c which cc compiles to
stage2; stage2 compiles elc-combined.el → stage3.c. stage2.c and
stage3.c are byte-identical. Closure proven.
- New elc installed at dist/platform/elc; old broken binary
preserved as dist/platform/elc.legacy.
- dist/platform/elc.c is the canonical generated source.
- elvm and the bytecode pipeline are no longer on the critical path.
Known gap
- The `+` operator's heuristic dispatch still picks string concat
when both operands are Idents with no literal anchor. Self-hosting
works because the compiler source is careful, but `fn add(a:Int,
b:Int) { a + b }` will not do arithmetic until codegen reads the
parsed type annotations to dispatch. Fix is wiring; not done here.
Tested
- tiny / lextest / whiletest / map+field / array build all run.
- cgi-studio (1037 lines real El) compiles to C cleanly. Link fails
only because runtime is missing fs_list, json_encode, llm_*; those
are scheduled batches.
- Three-stage closure (stage1 vs stage2 vs stage3) byte-identical.
This commit is contained in:
Will Anderson
@@ -98,11 +98,150 @@ el_val_t fs_write(el_val_t path, el_val_t content);
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/* ── JSON ────────────────────────────────────────────────────────────────── */
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el_val_t json_get(el_val_t json, el_val_t key);
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el_val_t json_parse(el_val_t s);
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el_val_t json_stringify(el_val_t v);
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el_val_t json_get_string(el_val_t json_str, el_val_t key);
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el_val_t json_get_int(el_val_t json_str, el_val_t key);
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el_val_t json_get_float(el_val_t json_str, el_val_t key);
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el_val_t json_get_bool(el_val_t json_str, el_val_t key);
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el_val_t json_get_raw(el_val_t json_str, el_val_t key);
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el_val_t json_set(el_val_t json_str, el_val_t key, el_val_t value);
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el_val_t json_array_len(el_val_t json_str);
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/* ── Time ────────────────────────────────────────────────────────────────── */
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el_val_t time_now(void);
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el_val_t time_now_utc(void);
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el_val_t time_format(el_val_t ts, el_val_t fmt);
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el_val_t time_to_parts(el_val_t ts);
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el_val_t time_from_parts(el_val_t secs, el_val_t ns, el_val_t tz);
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el_val_t time_add(el_val_t ts, el_val_t n, el_val_t unit);
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el_val_t time_diff(el_val_t ts1, el_val_t ts2, el_val_t unit);
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/* ── UUID ────────────────────────────────────────────────────────────────── */
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el_val_t uuid_new(void);
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el_val_t uuid_v4(void);
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/* ── Environment ─────────────────────────────────────────────────────────── */
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el_val_t env(el_val_t key);
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/* ── In-process state K/V ────────────────────────────────────────────────── */
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el_val_t state_set(el_val_t key, el_val_t value);
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el_val_t state_get(el_val_t key);
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el_val_t state_del(el_val_t key);
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el_val_t state_keys(void);
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/* ── Float formatting ────────────────────────────────────────────────────── */
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el_val_t float_to_str(el_val_t f);
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el_val_t int_to_float(el_val_t n);
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el_val_t float_to_int(el_val_t f);
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el_val_t format_float(el_val_t f, el_val_t decimals);
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el_val_t decimal_round(el_val_t f, el_val_t decimals);
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el_val_t str_to_float(el_val_t s);
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/* ── Math (Float-aware) ──────────────────────────────────────────────────── */
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el_val_t math_sqrt(el_val_t f);
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el_val_t math_log(el_val_t f);
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el_val_t math_ln(el_val_t f);
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el_val_t math_sin(el_val_t f);
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el_val_t math_cos(el_val_t f);
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el_val_t math_pi(void);
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/* ── String additions ────────────────────────────────────────────────────── */
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el_val_t str_index_of(el_val_t s, el_val_t sub);
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el_val_t str_split(el_val_t s, el_val_t sep);
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el_val_t str_char_at(el_val_t s, el_val_t i);
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el_val_t str_char_code(el_val_t s, el_val_t i);
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el_val_t str_pad_left(el_val_t s, el_val_t width, el_val_t pad);
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el_val_t str_pad_right(el_val_t s, el_val_t width, el_val_t pad);
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el_val_t str_format(el_val_t template, el_val_t data);
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el_val_t str_lower(el_val_t s);
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el_val_t str_upper(el_val_t s);
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/* ── List additions ──────────────────────────────────────────────────────── */
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el_val_t list_push(el_val_t list, el_val_t elem);
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el_val_t list_push_front(el_val_t list, el_val_t elem);
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el_val_t list_join(el_val_t list, el_val_t sep);
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el_val_t list_range(el_val_t start, el_val_t end);
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/* ── Bool helpers ────────────────────────────────────────────────────────── */
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el_val_t bool_to_str(el_val_t b);
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/* ── Process ─────────────────────────────────────────────────────────────── */
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void exit_program(el_val_t code);
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/* ── CGI identity ─────────────────────────────────────────────────────────────
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* Called at the start of main() in CGI programs (those with a `cgi {}` block).
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* Records the program's DHARMA identity before any other code executes. */
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void el_cgi_init(el_val_t name, el_val_t dharma_id, el_val_t principal,
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el_val_t network, el_val_t engram);
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/* ── DHARMA network builtins ─────────────────────────────────────────────────
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* Available to CGI programs (declared with a `cgi {}` block).
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* Stubs print descriptive output and return empty/zero values.
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* Full implementations are linked from the DHARMA runtime at deploy time. */
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el_val_t dharma_connect(el_val_t cgi_id);
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el_val_t dharma_send(el_val_t channel, el_val_t content);
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el_val_t dharma_activate(el_val_t query);
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void dharma_emit(el_val_t event_type, el_val_t payload);
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el_val_t dharma_field(el_val_t event_type);
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void dharma_strengthen(el_val_t cgi_id, el_val_t weight);
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el_val_t dharma_relationship(el_val_t cgi_id);
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el_val_t dharma_peers(void);
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/* ── Engram local graph primitives ───────────────────────────────────────────
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* Operate on the CGI's local Engram knowledge graph.
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* `engram_activate` queries the local graph only; `dharma_activate` is
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* network-wide across all connected CGI graphs. */
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el_val_t engram_node(el_val_t content, el_val_t node_type, el_val_t salience);
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el_val_t engram_activate(el_val_t query, el_val_t depth);
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void engram_connect(el_val_t from_id, el_val_t to_id, el_val_t weight, el_val_t relation);
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void engram_strengthen(el_val_t node_id);
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/* ── args() ─────────────────────────────────────────────────────────────────
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* Provides access to command-line arguments passed to the program.
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* Populated by el_runtime_init_args() before main() runs. */
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el_val_t args(void);
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void el_runtime_init_args(int argc, char** argv);
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/* ── Native VM builtin aliases (for compiled El source) ─────────────────────
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* These match the El VM's native_* builtins so that El source compiled
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* to C can call the same names without modification. */
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el_val_t native_list_get(el_val_t list, el_val_t index);
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el_val_t native_list_len(el_val_t list);
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el_val_t native_list_append(el_val_t list, el_val_t elem);
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el_val_t native_list_empty(void);
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el_val_t native_string_chars(el_val_t s);
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el_val_t native_int_to_str(el_val_t n);
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/* ── Method-call shorthand aliases ──────────────────────────────────────────
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* The El method-call convention `obj.method(args)` compiles to
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* `method(obj, args)`. These aliases expose the runtime functions under
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* the short names that result from method calls in El source.
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*
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* Example: `myList.append(x)` → `append(myList, x)` (calls this alias)
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* `myList.len()` → `len(myList)` (calls this alias) */
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el_val_t append(el_val_t list, el_val_t elem); /* el_list_append */
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el_val_t len(el_val_t list); /* el_list_len */
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el_val_t get(el_val_t list, el_val_t index); /* el_list_get */
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el_val_t map_get(el_val_t map, el_val_t key); /* el_map_get */
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el_val_t map_set(el_val_t map, el_val_t key, el_val_t value); /* el_map_set */
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#ifdef __cplusplus
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}
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#endif
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