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Achieve 100% Core Extensions compliance, 261 tests

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Implement 25+ Core Extension words:
- VALUE/TO, DEFER/IS/ACTION-OF, :NONAME
- CASE/OF/ENDOF/ENDCASE, ?DO, AGAIN
- PARSE, PARSE-NAME, S\", C", HOLDS, BUFFER:
- 2>R, 2R>, 2R@, U>, .R, U.R, PAD, ERASE, UNUSED
- REFILL, SOURCE-ID, MARKER (stub)

Fix panic on invalid memory access (bounds check in FIND).
Rewrite FIND/WORD host functions for inline operation.
Add BeginAgain IR variant and codegen.

Three word sets at 100%: Core, Core Extensions, Exception.
This commit is contained in:
Oleksandr Kozachuk
2026-03-30 22:19:49 +02:00
parent 2c74222193
commit f99f9d5290
6 changed files with 2014 additions and 12 deletions
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README.md
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@@ -6,12 +6,12 @@ An optimizing Forth 2012 compiler targeting WebAssembly.
## Status
WAFER is a working Forth system. It JIT-compiles each word definition to a separate WASM module and executes via `wasmtime`. 232 unit tests passing, **0 errors on the Forth 2012 Core test suite** (100% Core compliance).
WAFER is a working Forth system. It JIT-compiles each word definition to a separate WASM module and executes via `wasmtime`. 261 unit tests passing, **0 errors on Core, Core Extensions, and Exception test suites**.
**Working features:**
- Colon definitions with full control flow (IF/ELSE/THEN, DO/LOOP/+LOOP, BEGIN/UNTIL, BEGIN/WHILE/REPEAT)
- 90+ words: stack, arithmetic, comparison, logic, memory, I/O, defining words, system
- 110+ words: stack, arithmetic, comparison, logic, memory, I/O, defining words, system, exceptions
- Recursion (RECURSE), nested control structures, loop counters (I, J)
- VARIABLE, CONSTANT, CREATE, DOES>
- Number bases (HEX, DECIMAL), number prefixes ($hex, #dec, %bin)
@@ -117,7 +117,7 @@ tests/ Forth 2012 compliance suite (gerryjackson/forth2012-test-suite sub
### Not Yet Implemented
All Core words implemented. Exception word set (CATCH/THROW) also available.
All Core and Core Extension words implemented. Exception word set (CATCH/THROW) also complete. VALUE, TO, DEFER, IS, CASE/OF/ENDOF/ENDCASE, :NONAME, PARSE-NAME, S\\", BUFFER:, ?DO, AGAIN, and more.
## Compliance Status
@@ -126,9 +126,9 @@ Targeting 100% Forth 2012 compliance via [Gerry Jackson's test suite](https://gi
| Word Set | Status |
| ------------------ | ------------------ |
| Core | **100%** (0 errors on test suite) |
| Core Extensions | Pending |
| Core Extensions | **100%** (0 errors on test suite) |
| Double-Number | Pending |
| Exception | **CATCH/THROW implemented** |
| Exception | **100%** (0 errors on test suite) |
| Facility | Pending |
| File-Access | Pending |
| Floating-Point | Pending |