54 lines
2.2 KiB
Markdown
54 lines
2.2 KiB
Markdown
# Iteration 4 — single binary end-to-end
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> Format: `product/story-iteration-template`. Part of
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> [Story — one language, one runtime, one database, one binary](00-story.md).
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## Goals
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- The two halves meet: `woc` emits `.wob` images the VM's loader accepts,
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a conformance corpus pins language behavior from both sides, and
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`woc build` produces the story's headline artifact — one self-contained
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executable.
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- This is the milestone where "a new language with arithmetic and garbage
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collection" is demonstrably real: source in, running binary out.
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## Acceptance Criteria
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- What to achieve?
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- **Given** the pricing demo's logic subset,
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- **when** `woc` compiles it on a developer laptop,
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- **then** compilation finishes in under 100 ms and `wovm` runs the
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resulting module with correct output.
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- What to achieve?
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- **Given** the three-kind conformance corpus (runs with expected
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stdout; must-fail-compile with expected `WO-E###`; must-trap with
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expected trap code),
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- **when** the harness runs the full suite,
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- **then** every fixture lands in its expected bucket and ASan/Valgrind
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report zero errors across the suite.
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- What to achieve?
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- **Given** `woc build` on a sample project,
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- **when** the produced binary is copied to a machine with no OCaml, no
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compiler, nothing but Linux,
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- **then** it runs with no arguments and behaves identically.
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## Out Of Scope
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- Anything beyond the milestone grammar (iteration 5 grows the surface).
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- Hot reload / deployment mechanics (iteration 11 — but the self-exec
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trailer this iteration ships is its foundation).
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## Info
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- The loader's validation battery is the executable spec: every image
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`emit` produces must round-trip through it — the golden rule both
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test suites enforce.
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- The corpus becomes the spine every later iteration extends (lang, sys,
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db, actor fixture kinds already scaffolded under `tests/corpus/`).
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## Proposed Solution
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- Execute the existing plan: `compiler/plan/2026-08-01-wob-emit-e2e-single-binary.md`
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(emitter with ownership lowering + drop maps + vtables, corpus harness,
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pricing corpus, ownership/trap corpora, gc pump e2e, `woc build` trailer,
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`just oop-accept` gate over the five spec success criteria).
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