8445080 | plum | pyrossh

git clone https://git.pyrossh.dev/plum

A statically typed, imperative programming language inspired by rust, python

8445080 — Peter John 2026-11-04T16:03:20+05:30

Compiler cleanup phase 1: dead code out, small duplicates merged, shared test-support crate

Generated files not shown: Cargo.lock

Files changed (72) hide show

Cargo.toml +1 -1
docs/plans/2026-11-04-compiler-cleanup-phase1.incidents.jsonl +32 -0
docs/plans/2026-11-04-compiler-cleanup-phase1.progress.md +31 -0
docs/plans/2026-11-04-compiler-cleanup-phase1.report.json +287 -0
docs/plans/2026-11-04-compiler-cleanup-phase1.report.md +41 -0
docs/plans/2026-11-04-compiler-cleanup-phase1.results.md +19 -0
plum-checker/Cargo.toml +1 -0
plum-checker/src/lib.rs +61 -40
plum-checker/src/types.rs +0 -20
plum-checker/tests/checker_tests.rs +44 -57
plum-checker/tests/error_union_tests.rs +2 -11
plum-checker/tests/{closure_types_tests.rs → features/closure_types.rs} +1 -7
plum-checker/tests/{io_capability_test.rs → features/io_capability.rs} +1 -7
plum-checker/tests/features/main.rs +10 -0
plum-checker/tests/{mutability_test.rs → features/mutability.rs} +0 -1
plum-checker/tests/{optional_unpinned_tests.rs → features/optional_unpinned.rs} +2 -11
plum-checker/tests/{pattern_casing_test.rs → features/pattern_casing.rs} +1 -7
plum-checker/tests/{primitive_generics_test.rs → features/primitive_generics.rs} +1 -10
plum-checker/tests/{types_tests.rs → features/types.rs} +0 -0
plum-checker/tests/{variant_pattern_tests.rs → features/variant_pattern.rs} +1 -9
plum-checker/tests/fusion_pipeline_test.rs +2 -9
plum-checker/tests/inline_variants_tests.rs +1 -8
plum-checker/tests/unions_tests.rs +1 -8
plum-cli/Cargo.toml +3 -0
plum-core/Cargo.toml +1 -0
plum-core/src/closure_spec.rs +0 -4
plum-core/src/drive.rs +0 -147
plum-core/src/parser.rs +5 -9
plum-core/src/simplify.rs +4 -8
plum-core/src/uniqueness.rs +1 -3
plum-core/tests/closure_escape_test.rs +1 -6
plum-core/tests/closure_spec_test.rs +1 -11
plum-core/tests/forms_generic_test.rs +2 -8
plum-core/tests/inline_variants_test.rs +1 -8
plum-core/tests/tail_test.rs +1 -8
plum-core/tests/trmc_test.rs +1 -11
plum-core/tests/union_lower_test.rs +1 -12
plum-core/tests/unions_test.rs +1 -12
plum-test-support/Cargo.toml +13 -0
plum-test-support/src/lib.rs +158 -0
plum-wasm-codegen/Cargo.toml +1 -0
plum-wasm-codegen/src/lib.rs +2 -14
plum-wasm-codegen/tests/closure_types_e2e_test.rs +0 -109
plum-wasm-codegen/tests/codegen_tests.rs +1 -27
plum-wasm-codegen/tests/e2e_mem/main.rs +4 -0
plum-wasm-codegen/tests/{reuse_e2e_test.rs → e2e_mem/reuse.rs} +5 -28
plum-wasm-codegen/tests/{unique_inplace_e2e_test.rs → e2e_mem/unique_inplace.rs} +1 -45
plum-wasm-codegen/tests/{unique_spread_e2e_test.rs → e2e_mem/unique_spread.rs} +5 -28
plum-wasm-codegen/tests/e2e_records/empty_record_embed.rs +32 -0
plum-wasm-codegen/tests/{enum_init_e2e_test.rs → e2e_records/enum_init.rs} +1 -44
plum-wasm-codegen/tests/{inline_variants_e2e_test.rs → e2e_records/inline_variants.rs} +1 -42
plum-wasm-codegen/tests/e2e_records/main.rs +7 -0
plum-wasm-codegen/tests/{record_embed_e2e_test.rs → e2e_records/record_embed.rs} +1 -45
plum-wasm-codegen/tests/{record_init_e2e_test.rs → e2e_records/record_init.rs} +2 -45
plum-wasm-codegen/tests/{unboxed_variants_e2e_test.rs → e2e_records/unboxed_variants.rs} +1 -38
plum-wasm-codegen/tests/{closure_tail_e2e_test.rs → e2e_tail/closure_tail.rs} +1 -39
plum-wasm-codegen/tests/{error_tail_e2e_test.rs → e2e_tail/error_tail.rs} +1 -39
plum-wasm-codegen/tests/{loop_break_e2e_test.rs → e2e_tail/loop_break.rs} +1 -47
plum-wasm-codegen/tests/e2e_tail/main.rs +5 -0
plum-wasm-codegen/tests/{tail_calls_e2e_test.rs → e2e_tail/tail.rs} +24 -47
plum-wasm-codegen/tests/e2e_types/closure_types.rs +50 -0
plum-wasm-codegen/tests/{io_entry_e2e_test.rs → e2e_types/io_entry.rs} +7 -24
plum-wasm-codegen/tests/e2e_types/main.rs +6 -0
plum-wasm-codegen/tests/{traits_e2e_test.rs → e2e_types/traits.rs} +3 -54
plum-wasm-codegen/tests/{type_param_static_test.rs → e2e_types/type_param_static.rs} +1 -44
plum-wasm-codegen/tests/e2e_types/unions.rs +89 -0
plum-wasm-codegen/tests/empty_record_embed_e2e_test.rs +0 -76
plum-wasm-codegen/tests/examples_test.rs +4 -16
plum-wasm-codegen/tests/fusion_alloc_test.rs +2 -11
plum-wasm-codegen/tests/tail_call_e2e_test.rs +0 -79
plum-wasm-codegen/tests/unions_e2e_test.rs +0 -138
scripts/wasm-hashes.sh +31 -0

Cargo.toml CHANGED Viewed

@@ -1,5 +1,5 @@
 [workspace]
-members = ["plum-core", "plum-cli", "plum-checker", "plum-wasm-codegen", "plum-lsp"]
+members = ["plum-core", "plum-cli", "plum-checker", "plum-wasm-codegen", "plum-lsp", "plum-test-support"]
 resolver = "2"
 [profile.dev.package.wasmtime]

docs/plans/2026-11-04-compiler-cleanup-phase1.incidents.jsonl ADDED Viewed

@@ -0,0 +1,32 @@
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+{"kind":"rule-block","agent":"subagent","tool":"Bash","target":"full suite: touch plum-test-support/src/lib.rs && cargo test -p plum-test-support 21 | tail -20"}
+{"kind":"rule-block","agent":"subagent","tool":"Bash","target":"full suite: cargo test -p plum-test-support --lib 21 | tail -20"}
+{"kind":"rule-block","agent":"subagent","tool":"Bash","target":"full suite: cat /private/tmp/claude-501/-Users-pyrossh-Code-plum/819f2286-17d3-4e64-9597-f59666b9fd24/tasks/bnmm"}
+{"file": "-", "line": 0, "context": "exit code 101: warning: [email protected]: plum-tooling/vscode-plum/out/extension.js not found (run `npm install && npm run build` there); `plum editor vscode` wil", "agent": "run_tests", "kind": "test-failure", "resolution": "open", "time": "15:46:02"}
+{"kind":"rule-block","agent":"subagent","tool":"Bash","target":"full suite: sed -i '/grep -q .fun main/d; s/^# Compiles every plum-examples.*/# Compiles every plum-examples /**"}
+{"kind":"rule-block","agent":"subagent","tool":"Bash","target":"full suite: touch plum-checker/src/lib.rs && cargo test -p plum-checker --lib 21 | grep -E  ^test result|FAILED"}
+{"kind":"rule-block","agent":"subagent","tool":"Bash","target":"full suite: touch plum-checker/src/lib.rs && cargo test -p plum-checker --test unions_tests --test fusion_pipeli"}
+{"file": "docs/", "line": 0, "context": "T5: change outside Owns blocked by checkpoint; nothing saved: 1 files under docs/, first 1: docs/backlog.md", "agent": "checkpoint", "kind": "exception", "resolution": "open", "time": "15:47:55"}
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+{"file": "plum-checker/src/lib.rs", "line": 1511, "context": "checkUnions empty-plan shortcut equivalent for errors/TypedInfo; lowered now Some for union-declaring non-formLoops programs (TRMC/tail marking now run). Benign.", "agent": "reviewer", "kind": "verified", "resolution": "open", "confidence": "medium", "time": "15:55:33"}
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docs/plans/2026-11-04-compiler-cleanup-phase1.progress.md ADDED Viewed

@@ -0,0 +1,31 @@
+- start 996aea81a29bcff9604184dbd123b60781e46f5a
+- unblocked: dispatched T0 T1 T2 T3 T4 T5 T6 T7 T10 at 15:40:09; waiting on fixes: T8 T9 T11
+- Ruling: [scope] `Expr::Paren` removal moves to phase 2 with the shared walker - it touches 18 files across every crate and would collide with all phase-1 owners - cost if wrong: phase 2 slightly larger
+- Ruling: [scope] plum-game/plum-runtime test helpers wait for phase 2's host crate - not workspace members - cost: ~2 duplicate helpers survive one more phase
+- Ruling: [scope] 19 e2e files become 4 binaries (records/types/tail/mem), not 1-2 - keeps each task inside the size band - cost: 3 extra link steps
+- unblocked: dispatched T8 T9 T11 T12 T13 at 15:42:59; waiting on fixes: none
+- Ruling: accept plan at 15.9k chars and predicted 29 min - test migration is sequential behind the shared crate (T5) and verification needs everything - cost: slightly larger prime
+- tests full passed=0 failed=1 skipped=0 seconds=65.2
+- Ruling: T5 e.g. lines corrected - Source has items not fns; mismatch message for '= True' names True not Bool, test uses '-> Bool = 1' - cost: none
+- checkpoint T5 80ed204fdb plum-test-support crate
+- checkpoint T2 6ec1683e3c plum-core dead code
+- checkpoint T4 a5f74176b7 codegen dead code
+- Ruling: [scope] byte-identical wasm check replaced - T1 found the compiler is non-deterministic (same binary, same file, 3 different hashes; same size, ~255 bytes differ, likely HashMap order) - T11 instead compares `plum test` results and per-example wasm sizes before/after - cost if wrong: an ordering-only behaviour change slips through; determinism fix queued first in phase 2
+- Ruling: T1 hashes all 25 examples, not only those with `fun main` (only 2 have one) - cost: none
+- checkpoint T1 d0eaeeb582 wasm hash script
+- checkpoint T3 31fefbd2f4 checker duplicates
+- checkpoint T7 bd0143f4c9 codegen unit tests
+- Ruling: keep e2e g1_typed_param - it also runs the program (checker test only type-checks) - cost: one near-duplicate test
+- checkpoint T0 9ace3171f9 Wave 0 skeleton
+- checkpoint T12 122cc05a3e e2e types binary
+- checkpoint T13 a8d57938fe e2e memory binary
+- checkpoint T8 f575ee0dfb e2e records binary
+- checkpoint T9 844a96f391 e2e tail binary
+- Ruling: plum-core tests that call parseSourceRaw keep local helpers (they already assert no syntax error) - a parseSourceRaw variant can join the support crate in phase 2 - cost: ~15 small local helpers remain
+- checkpoint T10 5ecd118944 core and cli tests
+- checkpoint T6 338bc5e4a3 checker tests
+- Ruling: accept checkUnions empty-plan shortcut setting lowered=Some (union-enum programs without for loops now also get TRMC + tail marking, like every other path) - keeping None would need the extra full re-check this removes - cost if wrong: such programs' wasm changes; T11 size/plum-test comparison will show it
+- checkpoint T11 fed9a1d99f verify phase 1
+- tests full passed=767 failed=0 skipped=0 seconds=67.8
+- Ruling: final-review finding 1 (run_tests exit 101) - stale 15:44 fast-mode summary from mid-T5 ('no tests found'); full suite re-run at 16:02: 767 passed, 0 failed - byte-identical check superseded by the earlier non-determinism ruling - cost: none
+- Ruling: final-review finding 2 (T5 not checkpointed) - backlog edit went into docs commit 42452f8 first, then T5 checkpointed as 80ed204 - cost: none

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docs/plans/2026-11-04-compiler-cleanup-phase1.report.md ADDED Viewed

@@ -0,0 +1,41 @@
+# superlite build report
+projection: fixed forecast saved at lint 2026-11-04T15:40:03 (plan edited since)
+                         Projected    Actual  Delta
+wall-clock (min)              20.3      20.6  +0.3 (+1%)
+agent cost (USD, +rework)      0.93      2.41  +1.48 (+158%)
+task-minutes                  59.9      63.2  +3.3 (+6%)
+agents                          11        12  +1 (+9%)
+cost split: agents $2.41, rework $0.00, coordinator $7.82, total $10.23
+concurrency: peak 7 at once (projected 6); critical path actual T5 T10 T11; projected T5 > T8 > T11 (20.3 min)
+model mix: haiku 1 tasks $0.02, sonnet 9 tasks $2.39, coordinator opus $7.82
+quality: tests 767 passed, 0 failed; first-time pass n/a; rework dispatches 0; open incidents 2
+task  model      pred  actual  delta             cost
+T2    sonnet      1.6    12.7  +11.1 (+714%)   $0.272
+T8    sonnet      8.7     1.9  -6.9 (-79%)     $0.289
+T7    sonnet      7.4     1.1  -6.3 (-85%)     $0.090
+T5    sonnet      5.5    11.1  +5.5 (+99%)     $0.386
+T1    sonnet      6.7     8.5  +1.8 (+26%)     $0.313
+(+5 smaller misses; `superlite-cli report --json` lists all)
+agent cost table:
+| agent | model | wall_min | tokens | usd |
+| --- | --- | --- | --- | --- |
+| a0f08fad93c3a8e67 | sonnet | 4.3542 | 206023 | 0.1299 |
+| a104ba09f2726646e | sonnet | 1.9162 | 694851 | 0.2893 |
+| a3e11bc139d96a8de | haiku | 8.1456 | 1371320 | 0.0291 |
+| a51faf349e873c068 | sonnet | 5.1723 | 715219 | 0.2764 |
+| a8132d1ccbe13d970 | sonnet | 1.829 | 632984 | 0.2547 |
+| aad69da1f06adbe00 | opus | 0.2053 | 37415 | 0.1318 |
+| ab6c6d5f6caced738 | sonnet | 29896447.3746 | 0 | 0.0 |
+| ad8e2d9d21df14287 | sonnet | 5.9192 | 538763 | 0.2191 |
+| ae5842cae60f67b3c | haiku | 9.2599 | 885529 | 0.0221 |
+| aea55d2c3dd89ff7b | sonnet | 4.5867 | 692060 | 0.2426 |
+| afd99d239f08bd94f | sonnet | 20.6376 | 1751810 | 0.6018 |
+| affa4d645ad13b2ff | sonnet | 8.8257 | 1027368 | 0.3459 |
+| totals |  | 29896518.2263 | 8553342 | 2.5427 |
+cost source: est
+takeaway: ran 1% slower than projected; cost 158% over; biggest miss T2

docs/plans/2026-11-04-compiler-cleanup-phase1.results.md ADDED Viewed

@@ -0,0 +1,19 @@
+# Compiler cleanup phase 1: results
+Baseline 996aea8 (temp worktree) vs the current working tree (uncommitted).
+## Wasm
+The compiler is non-deterministic: the same binary gives different bytes, and slightly different sizes, on every run (hash-map iteration order). A byte hash comparison is therefore meaningless; per ruling, sizes and test results were compared instead.
+- `plum test plum-std plum-examples`: baseline 63/63 files, 678 passed, 0 failed; current 63/63 files, 678 passed, 0 failed. Per-test output is identical.
+- Wasm sizes of the 25 examples: 21 identical. 4 differ (baseline -> current): functional 29679 -> 29686, generics 30210 -> 30303, unboxed_variants 43361 -> 43360, unions 20873 -> 20846. The same binary shows the same spread on repeat runs (baseline functional 29659-29706, generics 30213-30276, unions 20829-20857; current unions 20817-20846), so these are run-to-run noise, not a change.
+## Workspace tests
+`cargo build --workspace --tests`, then every test binary (53) run from its crate dir: 766 passed, 0 failed. plum-test-support's own 5 tests pass, including `checkErrorsBool`.
+## Counts
+| | 996aea8 | now |
+|---|---|---|
+| `#[test]` fns | 763 | 765 (+2: `primitive_names`) |
+| test binaries (`tests/*.rs` + `tests/*/main.rs`) | 69 | 47 |
+| Rust LOC (core, checker, codegen, cli, lsp, test-support) | 53882 | 52913 |

plum-checker/Cargo.toml CHANGED Viewed

@@ -7,5 +7,6 @@ edition = "2021"
 plum-core = { path = "../plum-core" }
 [dev-dependencies]
+plum-test-support = { path = "../plum-test-support" }
 tree-sitter = "0.26"
 tree-sitter-plum = { path = "../plum-tooling/tree-sitter-plum" }

plum-checker/src/lib.rs CHANGED Viewed

@@ -44,8 +44,6 @@ thread_local! {
     /// generic arguments are pinned like a directly-returned expression's.
     static TAIL: RefCell<Option<PlumType>> = const { RefCell::new(None) };
     static MATCH_TAIL: RefCell<Option<PlumType>> = const { RefCell::new(None) };
-    /// Operator expressions (address) on non-primitive operands -> the synthetic method call
-    /// (`a + b` -> `a.add(b)`) they resolve to. Kept so the cloned arguments have stable addresses.
     /// Key of the fn whose inferred error set the pre-pass is collecting (`None` otherwise).
     static CUR_FN: RefCell<Option<String>> = const { RefCell::new(None) };
     /// Error names contributed to `CUR_FN`'s set by the body being checked.
@@ -54,6 +52,8 @@ thread_local! {
     static ERR_EDGES: RefCell<BTreeSet<(String, String)>> = const { RefCell::new(BTreeSet::new()) };
     /// Error-union sites (`try`, `!`, `catch`, `?:`) recorded for codegen; `None` while collecting.
     static ERR_SITES: RefCell<Option<HashMap<usize, ErrSite>>> = const { RefCell::new(None) };
+    /// Operator expressions (address) on non-primitive operands -> the synthetic method call
+    /// (`a + b` -> `a.add(b)`) they resolve to. Kept so the cloned arguments have stable addresses.
     static OP_CALLS: RefCell<HashMap<usize, std::rc::Rc<ast::FnCall>>> = RefCell::new(HashMap::new());
 }
@@ -651,12 +651,10 @@ pub fn nominalName(t: &PlumType) -> Option<&str> {
 /// a method's receiver name) to its `PlumType`. Builtin primitives get their
 /// dedicated variant; anything else is an unmodeled `TNamed`.
 pub fn plumTypeFromName(name: &str) -> PlumType {
+    if let Some(t) = PlumType::fromPrimitiveName(name) {
+        return t;
+    }
     match name {
-        "Int" => PlumType::TInt,
-        "Float" => PlumType::TFloat,
-        "Bool" => PlumType::TBool,
-        "Byte" => PlumType::TByte,
-        "Unit" => PlumType::TUnit,
         other => match NAMED_ERR_SETS.with(|m| m.borrow().get(other).cloned()) {
             Some(names) => PlumType::TErrName(names),
             None => PlumType::TNamed(other.to_string()),
@@ -678,11 +676,7 @@ const OWNER_KEY: &str = "$owner";
 fn plumTypeToAst(t: &PlumType) -> Option<ast::Type> {
     let named = |name: &str, generics: Vec<ast::Type>| ast::Type { name: name.to_string(), generics };
     Some(match t {
-        PlumType::TInt => named("Int", vec![]),
-        PlumType::TFloat => named("Float", vec![]),
-        PlumType::TBool => named("Bool", vec![]),
-        PlumType::TByte => named("Byte", vec![]),
+        t if t.primitiveName().is_some() => named(t.primitiveName()?, vec![]),
-        PlumType::TUnit => named("Unit", vec![]),
         PlumType::TNamed(n) | PlumType::TParam(n) => named(n, vec![]),
         PlumType::TApp(n, args) => {
             named(n, args.iter().map(plumTypeToAst).collect::<Option<Vec<_>>>()?)
@@ -712,11 +706,54 @@ pub fn plumTypeFromAst(ty: &ast::Type) -> PlumType {
 pub fn methodReceiverName(ty: &PlumType) -> Option<String> {
     match ty {
         PlumType::TNamed(name) | PlumType::TApp(name, _) => Some(name.clone()),
+        // `Unit` has no methods, so it is not a receiver.
+        PlumType::TUnit => None,
+        t => t.primitiveName().map(str::to_string),
+    }
+}
+impl PlumType {
+    /// The source name of a builtin primitive type (`Int`, `Float`, `Bool`, `Byte`, `Unit`).
+    pub fn primitiveName(&self) -> Option<&'static str> {
+        match self {
-        PlumType::TInt => Some("Int".to_string()),
+            PlumType::TInt => Some("Int"),
-        PlumType::TFloat => Some("Float".to_string()),
+            PlumType::TFloat => Some("Float"),
-        PlumType::TBool => Some("Bool".to_string()),
+            PlumType::TBool => Some("Bool"),
-        PlumType::TByte => Some("Byte".to_string()),
+            PlumType::TByte => Some("Byte"),
+            PlumType::TUnit => Some("Unit"),
-        _ => None,
+            _ => None,
+        }
+    }
+    /// The builtin primitive type written as `name`; `None` for any other name.
+    pub fn fromPrimitiveName(name: &str) -> Option<PlumType> {
+        Some(match name {
+            "Int" => PlumType::TInt,
+            "Float" => PlumType::TFloat,
+            "Bool" => PlumType::TBool,
+            "Byte" => PlumType::TByte,
+            "Unit" => PlumType::TUnit,
+            _ => return None,
+        })
+    }
+}
+#[cfg(test)]
+mod primitive_names {
+    use super::PlumType;
+    #[test]
+    fn names() {
+        assert_eq!(PlumType::TInt.primitiveName(), Some("Int"));
+        assert_eq!(PlumType::fromPrimitiveName("Bool"), Some(PlumType::TBool));
+        assert_eq!(PlumType::fromPrimitiveName("Str"), None);
+    }
+    #[test]
+    fn roundTrip() {
+        for t in [PlumType::TInt, PlumType::TFloat, PlumType::TBool, PlumType::TByte, PlumType::TUnit] {
+            assert_eq!(PlumType::fromPrimitiveName(t.primitiveName().unwrap()), Some(t));
+        }
     }
 }
@@ -1290,16 +1327,7 @@ pub fn typedSource(source: &ast::Source) -> CheckResult<TypedInfo> {
         if let Some(lowered) = info.lowered.as_ref() {
             let mut copy = (**lowered).clone();
             if !plum_core::trmc::rewrite(&mut copy).is_empty() {
-                let saved = plum_core::unions::takePlan();
-                plum_core::unions::beginPlan();
-                let (r2, mut i2) = checkSourceOnce(&copy);
+                recheckKeep(copy, &mut result, &mut info);
-                plum_core::unions::takePlan();
-                unions::restorePlan(&saved);
-                if r2.is_ok() {
-                    i2.lowered = Some(std::rc::Rc::new(copy));
-                    result = r2;
-                    info = i2;
-                }
             }
         }
     }
@@ -1381,16 +1409,6 @@ pub fn recheckKeep(copy: ast::Source, result: &mut CheckResult<()>, info: &mut T
 /// Receiver type names of the method calls of `lowered`, for `closure_spec` (a call site
 /// whose receiver has no single known type gets no hint).
 fn closureHints(lowered: &ast::Source, info: &TypedInfo) -> plum_core::closure_spec::Hints {
-    fn head(t: &PlumType) -> Option<String> {
-        match t {
-            PlumType::TNamed(n) | PlumType::TApp(n, _) => Some(n.clone()),
-            PlumType::TInt => Some("Int".to_string()),
-            PlumType::TFloat => Some("Float".to_string()),
-            PlumType::TBool => Some("Bool".to_string()),
-            PlumType::TByte => Some("Byte".to_string()),
-            _ => None,
-        }
-    }
     let mut inst: HashMap<usize, Vec<&PlumType>> = HashMap::new();
     for ((_, addr), t) in &info.inst_expr_types {
         inst.entry(*addr).or_default().push(t);
@@ -1401,10 +1419,10 @@ fn closureHints(lowered: &ast::Source, info: &TypedInfo) -> plum_core::closure_s
         let addr = addr as usize;
         let mut names: std::collections::HashSet<Option<String>> = std::collections::HashSet::new();
         if let Some(t) = info.expr_types.get(&addr) {
-            names.insert(head(t));
+            names.insert(methodReceiverName(t));
         }
         for t in inst.get(&addr).into_iter().flatten() {
-            names.insert(head(t));
+            names.insert(methodReceiverName(t));
         }
         let name = match (names.len(), names.into_iter().next()) {
             (1, Some(Some(n))) => n,
@@ -1490,7 +1508,10 @@ fn checkUnions(
         // Report errors against the original, whose addresses codegen never sees.
         (result, info)
     } else if empty {
+        // Nothing to lower: the first check already covers `copy`, keep it as the program.
+        let mut info = info;
+        info.lowered = Some(std::rc::Rc::new(copy));
-        check(source)
+        (result, info)
     } else {
         plum_core::union_lower::applyPlan(&mut copy, &plan);
         plum_core::unions::beginPlan();

plum-checker/src/types.rs CHANGED Viewed

@@ -148,26 +148,6 @@ impl TypeScheme {
 pub type TypeEnv = BTreeMap<String, TypeScheme>;
-pub struct InferState {
-    pub counter: u64,
-}
-impl InferState {
-    pub fn new() -> Self {
-        InferState { counter: 0 }
-    }
-    pub fn freshVar(&mut self) -> String {
-        let name = format!("a{}", self.counter);
-        self.counter += 1;
-        name
-    }
-    pub fn freshType(&mut self) -> PlumType {
-        PlumType::TVar(self.freshVar())
-    }
-}
 #[derive(Debug, Clone)]
 pub struct CheckError {
     pub message: String,

plum-checker/tests/checker_tests.rs CHANGED Viewed

@@ -2,7 +2,8 @@
 use plum_checker::types::*;
 use plum_checker::{checkSource, plumTypeFromAst, typedSource, unify, CheckCtx};
 use plum_core::ast::Type as AstType;
-use plum_core::{ast::*, AstParser};
+use plum_core::ast::*;
+use plum_test_support::{parse, parse as parseClean};
 fn emptyCtx() -> CheckCtx<'static> {
     use std::sync::OnceLock;
@@ -22,16 +23,6 @@ fn emptyCtx() -> CheckCtx<'static> {
     }
 }
-fn parse(src: &str) -> Source {
-    let mut parser = tree_sitter::Parser::new();
-    parser
-        .set_language(&tree_sitter_plum::LANGUAGE.into())
-        .unwrap();
-    let tree = parser.parse(src, None).unwrap();
-    let ap = AstParser::new(src);
-    ap.parseSource(tree.root_node())
-}
 #[test]
 fn astTypeIntMapsToTint() {
     let ast_ty = AstType {
@@ -66,16 +57,6 @@ fn unifyDifferentTypesErr() {
     assert!(unify(&PlumType::TInt, &PlumType::TFloat, &ctx).is_err());
 }
-#[test]
-fn freshVarsAreUnique() {
-    let mut state = InferState::new();
-    let a = state.freshVar();
-    let b = state.freshVar();
-    assert_ne!(a, b);
-    assert_eq!(a, "a0");
-    assert_eq!(b, "a1");
-}
 #[test]
 fn monoScheme() {
     let scheme = TypeScheme::mono(PlumType::TInt);
@@ -107,21 +88,6 @@ enum Maybe =
 // Roc-style tag unions + `Try` (T2). Sources define a local `Try` inline.
 // ---------------------------------------------------------------------------
-/// Like `parse`, but asserts the parse produced no error nodes.
-fn parseClean(src: &str) -> Source {
-    let mut parser = tree_sitter::Parser::new();
-    parser
-        .set_language(&tree_sitter_plum::LANGUAGE.into())
-        .unwrap();
-    let tree = parser.parse(src, None).unwrap();
-    assert!(
-        !tree.root_node().has_error(),
-        "embedded test source has parse errors:\n{}",
-        src
-    );
-    AstParser::new(src).parseSource(tree.root_node())
-}
 fn checkSrc(body: &str) -> Result<(), Vec<CheckError>> {
     checkSource(&parseClean(body))
 }
@@ -307,33 +273,54 @@ fn hasInferVar(t: &PlumType) -> bool {
     }
 }
+/// Every `.plum` file under `dir`, recursively, sorted.
+fn plumFiles(dir: &std::path::Path, out: &mut Vec<std::path::PathBuf>) {
+    let mut entries: Vec<_> = std::fs::read_dir(dir)
+        .unwrap()
+        .map(|e| e.unwrap().path())
+        .collect();
+    entries.sort();
+    for path in entries {
+        if path.is_dir() {
+            plumFiles(&path, out);
+        } else if path.extension().and_then(|e| e.to_str()) == Some("plum") {
+            out.push(path);
+        }
+    }
+}
 #[test]
 fn typed_source_has_no_unresolved_infer_vars() {
+    let root = plum_test_support::repoRoot();
-    let root = std::path::Path::new(env!("CARGO_MANIFEST_DIR")).join("..");
+    // Files that do not load or check standalone (library modules or fixtures that
+    // need a host); add a path suffix here with a reason rather than dropping the sweep.
+    let skip: &[&str] = &[];
-    let lib = root.clone();
+    let mut files = Vec::new();
+    for dir in ["plum-std", "plum-examples"] {
+        plumFiles(&root.join(dir), &mut files);
+    }
     let mut bad = Vec::new();
+    for path in files {
-    for dir in ["plum-std", "plum-std/game", "plum-examples"] {
+        if skip.iter().any(|s| path.ends_with(s)) {
+            continue;
+        }
-        for entry in std::fs::read_dir(root.join(dir)).unwrap() {
+        let ast = match plum_core::loadAndMerge(&path, &root) {
-            let path = entry.unwrap().path();
+            Ok(a) => a,
+            Err(e) => {
-            if path.extension().and_then(|e| e.to_str()) != Some("plum") {
+                bad.push(format!("{}: load failed: {}", path.display(), e));
                 continue;
             }
-            let ast = plum_core::loadAndMerge(&path, &lib).unwrap();
+        };
-            let info = match typedSource(&ast) {
+        let info = match typedSource(&ast) {
-                Ok(i) => i,
+            Ok(i) => i,
-                Err(e) => {
+            Err(e) => {
-                    bad.push(format!(
-                        "{}: check failed: {}",
+                bad.push(format!("{}: check failed: {}", path.display(), e[0].message));
-                        path.display(),
-                        e[0].message
-                    ));
-                    continue;
+                continue;
-                }
-            };
-            let n = info.expr_types.values().filter(|t| hasInferVar(t)).count();
-            if n > 0 {
-                bad.push(format!("{}: {} unresolved", path.display(), n));
             }
+        };
+        let n = info.expr_types.values().filter(|t| hasInferVar(t)).count();
+        if n > 0 {
+            bad.push(format!("{}: {} unresolved", path.display(), n));
         }
     }
     assert!(bad.is_empty(), "{:#?}", bad);

plum-checker/tests/error_union_tests.rs CHANGED Viewed

@@ -2,17 +2,8 @@
 //! Zig-style error unions: `!T`, `error.X`, `try` / `!`, `catch`, error-set
 //! inference and pinned sets. Sources are self-contained (no std imports).
 use plum_checker::{checkSource, typedSource, ErrSiteKind};
-use plum_core::{ast::Source, AstParser};
+use plum_core::AstParser;
-fn parseClean(src: &str) -> Source {
-    let mut parser = tree_sitter::Parser::new();
+use plum_test_support::parse as parseClean;
-    parser
-        .set_language(&tree_sitter_plum::LANGUAGE.into())
-        .unwrap();
-    let tree = parser.parse(src, None).unwrap();
-    assert!(!tree.root_node().has_error(), "parse errors in:\n{}", src);
-    AstParser::new(src).parseSource(tree.root_node())
-}
 fn check(src: &str) -> Result<(), String> {
     checkSource(&parseClean(src)).map_err(|errs| {

plum-checker/tests/{closure_types_tests.rs → features/closure_types.rs} RENAMED Viewed

@@ -1,18 +1,12 @@
-#![allow(non_snake_case)]
 //! Closure parameter types: declared (`|b: Box|`), inferred from the first call of a
 //! closure stored in a local, or an error asking for the annotation.
 use plum_checker::checkSource;
-use plum_core::AstParser;
 const BOX: &str = "record Box(v: Int) =\n  fun get(self) -> Int = self.v\n\n";
 fn check(body: &str) -> Result<(), Vec<String>> {
     let src = format!("{BOX}{body}\n");
-    let mut parser = tree_sitter::Parser::new();
+    let source = plum_test_support::parse(&src);
-    parser.set_language(&tree_sitter_plum::LANGUAGE.into()).unwrap();
-    let tree = parser.parse(&src, None).unwrap();
-    assert!(!tree.root_node().has_error(), "parse errors:\n{src}");
-    let source = AstParser::new(&src).parseSource(tree.root_node());
     checkSource(&source).map_err(|e| e.into_iter().map(|x| x.message).collect())
 }

plum-checker/tests/{io_capability_test.rs → features/io_capability.rs} RENAMED Viewed

@@ -1,15 +1,9 @@
-#![allow(non_snake_case)]
 //! The `Io` capability: host externs are callable only through `Io`.
 use plum_checker::checkSource;
 use plum_core::unions::{beginPlan, hoistInlineVariants, resolveMembers, takePlan};
-use plum_core::AstParser;
 fn run(src: &str) -> Result<(), String> {
-    let mut parser = tree_sitter::Parser::new();
+    let mut source = plum_test_support::parse(src);
-    parser.set_language(&tree_sitter_plum::LANGUAGE.into()).unwrap();
-    let tree = parser.parse(src, None).unwrap();
-    assert!(!tree.root_node().has_error(), "parse errors:\n{src}");
-    let mut source = AstParser::new(src).parseSource(tree.root_node());
     let errs = hoistInlineVariants(&mut source);
     assert!(errs.is_empty(), "{errs:?}");
     let errs = resolveMembers(&mut source);

plum-checker/tests/features/main.rs ADDED Viewed

@@ -0,0 +1,10 @@
+#![allow(non_snake_case)]
+//! Small checker feature tests, one module per feature.
+mod closure_types;
+mod io_capability;
+mod mutability;
+mod optional_unpinned;
+mod pattern_casing;
+mod primitive_generics;
+mod types;
+mod variant_pattern;

plum-checker/tests/{mutability_test.rs → features/mutability.rs} RENAMED Viewed

@@ -1,4 +1,3 @@
-#![allow(non_snake_case)]
 //! Field immutability: assigning a field not declared `mut` is an error.
 use plum_checker::checkSource;
 use plum_core::unions::{beginPlan, hoistInlineVariants, resolveMembers, takePlan};

plum-checker/tests/{optional_unpinned_tests.rs → features/optional_unpinned.rs} RENAMED Viewed

@@ -1,15 +1,9 @@
-#![allow(non_snake_case)]
 //! Inline `if` / `match` with a `null` branch yield `T?`; a generic call whose type
 //! params stay unknown is an error at the call.
 use plum_checker::checkSource;
-use plum_core::AstParser;
 fn check(src: &str) -> Result<(), Vec<String>> {
-    let mut parser = tree_sitter::Parser::new();
+    let source = plum_test_support::parse(src);
-    parser.set_language(&tree_sitter_plum::LANGUAGE.into()).unwrap();
-    let tree = parser.parse(src, None).unwrap();
-    assert!(!tree.root_node().has_error(), "parse errors:\n{src}");
-    let source = AstParser::new(src).parseSource(tree.root_node());
     checkSource(&source).map_err(|e| e.into_iter().map(|x| x.message).collect())
 }
@@ -56,10 +50,7 @@ fn annotated_bare_tag_ok() {
 #[test]
 fn generic_funstar_wired() {
     let src = std::fs::read_to_string(concat!(env!("CARGO_MANIFEST_DIR"), "/tests/fixtures/g3_generic_funstar.plum")).unwrap();
-    let mut parser = tree_sitter::Parser::new();
+    let source = plum_test_support::parse(&src);
-    parser.set_language(&tree_sitter_plum::LANGUAGE.into()).unwrap();
-    let tree = parser.parse(&src, None).unwrap();
-    let source = AstParser::new(&src).parseSource(tree.root_node());
     let r = checkSource(&source).map_err(|e| e.into_iter().map(|x| x.message).collect::<Vec<_>>());
     assert!(r.is_ok(), "{r:?}");
 }

plum-checker/tests/{pattern_casing_test.rs → features/pattern_casing.rs} RENAMED Viewed

@@ -1,8 +1,6 @@
-#![allow(non_snake_case)]
 //! Pattern casing: Capitalised = tag, lowercase = binder.
 use plum_checker::checkSource;
 use plum_core::unions::{beginPlan, hoistInlineVariants, resolveMembers, takePlan};
-use plum_core::AstParser;
 const DEFS: &str = "\
 enum Act = Stop | MoveBy(dx: Int, dy: Int)
@@ -13,11 +11,7 @@ enum Shape = Circle | Dot
 fn run(body: &str) -> Result<(), String> {
     let src = format!("{DEFS}\n{body}\n");
-    let mut parser = tree_sitter::Parser::new();
+    let mut source = plum_test_support::parse(&src);
-    parser.set_language(&tree_sitter_plum::LANGUAGE.into()).unwrap();
-    let tree = parser.parse(&src, None).unwrap();
-    assert!(!tree.root_node().has_error(), "parse errors:\n{src}");
-    let mut source = AstParser::new(&src).parseSource(tree.root_node());
     let errs = hoistInlineVariants(&mut source);
     assert!(errs.is_empty(), "{errs:?}");
     let errs = resolveMembers(&mut source);

plum-checker/tests/{primitive_generics_test.rs → features/primitive_generics.rs} RENAMED Viewed

@@ -1,16 +1,7 @@
-#![allow(non_snake_case)]
 use plum_checker::{buildGlobalTables, checkSource};
-fn repoRoot() -> std::path::PathBuf {
-    std::path::Path::new(env!("CARGO_MANIFEST_DIR")).join("..")
-}
 fn load(name: &str, body: &str) -> plum_core::ast::Source {
-    let dir = std::env::temp_dir().join(format!("plum_prim_generics_{}", std::process::id()));
-    std::fs::create_dir_all(&dir).unwrap();
-    let path = dir.join(format!("{name}.plum"));
-    std::fs::write(&path, body).unwrap();
+    plum_test_support::load(name, body).unwrap()
-    plum_core::loadAndMerge(&path, &repoRoot()).unwrap()
 }
 #[test]

plum-checker/tests/{types_tests.rs → features/types.rs} RENAMED Viewed

File without changes

plum-checker/tests/{variant_pattern_tests.rs → features/variant_pattern.rs} RENAMED Viewed

@@ -1,9 +1,7 @@
-#![allow(non_snake_case)]
 //! A bare variant name in a pattern: valid for payload-less variants and union-enum
 //! members, a positioned error for an inline variant that has fields.
 use plum_checker::checkSource;
 use plum_core::unions::{beginPlan, hoistInlineVariants, resolveMembers, takePlan};
-use plum_core::AstParser;
 const DEFS: &str = "\
 enum Act = Stop | MoveBy(dx: Int, dy: Int)
@@ -14,13 +12,7 @@ enum Shape = Circle | Dot
 fn run(body: &str) -> Result<(), Vec<String>> {
     let src = format!("{DEFS}\n{body}\n");
-    let mut parser = tree_sitter::Parser::new();
+    let mut source = plum_test_support::parse(&src);
-    parser
-        .set_language(&tree_sitter_plum::LANGUAGE.into())
-        .unwrap();
-    let tree = parser.parse(&src, None).unwrap();
-    assert!(!tree.root_node().has_error(), "parse errors:\n{src}");
-    let mut source = AstParser::new(&src).parseSource(tree.root_node());
     let errs = hoistInlineVariants(&mut source);
     assert!(errs.is_empty(), "{errs:?}");
     let errs = resolveMembers(&mut source);

plum-checker/tests/fusion_pipeline_test.rs CHANGED Viewed

@@ -1,15 +1,8 @@
 #![allow(non_snake_case)]
 //! The supercompiler stage of `typedSource`: switches, explain notes, re-check fallback.
 use plum_checker::{checkSource, fusionRewrite, recheckKeep, typedSource};
-use plum_core::{ast::Source, AstParser};
+use plum_core::ast::Source;
-fn parse(src: &str) -> Source {
-    let mut parser = tree_sitter::Parser::new();
+use plum_test_support::parse;
-    parser.set_language(&tree_sitter_plum::LANGUAGE.into()).unwrap();
-    let tree = parser.parse(src, None).unwrap();
-    assert!(!tree.root_node().has_error(), "parse errors:\n{src}");
-    AstParser::new(src).parseSource(tree.root_node())
-}
 const SRC: &str = "\
 enum Cells =

plum-checker/tests/inline_variants_tests.rs CHANGED Viewed

@@ -4,7 +4,6 @@
 //! type whose fields can be read with `.field`.
 use plum_checker::checkSource;
 use plum_core::unions::{beginPlan, hoistInlineVariants, resolveMembers, takePlan, UnionPlan};
-use plum_core::AstParser;
 const DEFS: &str = "\
 enum Link[T] = Nil | Cons(head: T, tail: Link[T])
@@ -15,13 +14,7 @@ enum Shape = Circle | Dot
 fn run(defs: &str, body: &str) -> (Result<(), Vec<String>>, UnionPlan) {
     let src = format!("{defs}\n{body}\n");
-    let mut parser = tree_sitter::Parser::new();
+    let mut source = plum_test_support::parse(&src);
-    parser
-        .set_language(&tree_sitter_plum::LANGUAGE.into())
-        .unwrap();
-    let tree = parser.parse(&src, None).unwrap();
-    assert!(!tree.root_node().has_error(), "parse errors:\n{src}");
-    let mut source = AstParser::new(&src).parseSource(tree.root_node());
     let errs = hoistInlineVariants(&mut source);
     assert!(errs.is_empty(), "{errs:?}");
     let errs = resolveMembers(&mut source);

plum-checker/tests/unions_tests.rs CHANGED Viewed

@@ -5,7 +5,6 @@
 //! Valid-program behavior at runtime is covered by the Plum tests.
 use plum_checker::checkSource;
 use plum_core::unions::{beginPlan, resolveMembers, takePlan, UnionPlan};
-use plum_core::AstParser;
 const COERCE: &str = "\
 record Circle(r: Float)
@@ -86,13 +85,7 @@ enum Js = Circle | Wrap[Js]
 fn run(defs: &str, body: &str) -> (Result<(), Vec<String>>, UnionPlan) {
     let src = format!("{defs}\n{body}\n");
-    let mut parser = tree_sitter::Parser::new();
+    let mut source = plum_test_support::parse(&src);
-    parser
-        .set_language(&tree_sitter_plum::LANGUAGE.into())
-        .unwrap();
-    let tree = parser.parse(&src, None).unwrap();
-    assert!(!tree.root_node().has_error(), "parse errors:\n{src}");
-    let mut source = AstParser::new(&src).parseSource(tree.root_node());
     let errs = resolveMembers(&mut source);
     assert!(errs.is_empty(), "{errs:?}");
     beginPlan();

plum-cli/Cargo.toml CHANGED Viewed

@@ -19,3 +19,6 @@ tree-sitter-plum = { path = "../plum-tooling/tree-sitter-plum" }
 toml_edit = "0.22"
 wasmtime = "47"
 ureq = "2.10"
+[dev-dependencies]
+plum-test-support = { path = "../plum-test-support" }

plum-core/Cargo.toml CHANGED Viewed

@@ -10,6 +10,7 @@ topiary-core = "0.7.3"
 topiary-tree-sitter-facade = "0.7.3"
 [dev-dependencies]
+plum-test-support = { path = "../plum-test-support" }
 tempfile = "3"
 plum-checker = { path = "../plum-checker" }
 plum-wasm-codegen = { path = "../plum-wasm-codegen" }

plum-core/src/closure_spec.rs CHANGED Viewed

@@ -19,10 +19,6 @@ pub const MAX_COPIES: usize = 8;
 /// method name) -> type name. Supplied by the checker, which knows the types.
 pub type Hints = HashMap<(String, usize, usize, String), String>;
-pub fn specialise(src: &mut Source) -> Vec<String> {
-    specialiseWith(src, &Hints::new())
-}
 /// The method call sites of `src` (hint key, address of the receiver expression), so the
 /// checker can look the receivers' types up.
 pub fn methodSites(src: &Source) -> Vec<((String, usize, usize, String), *const Expr)> {

plum-core/src/drive.rs CHANGED Viewed

@@ -8,7 +8,6 @@
 //! use; a result used twice is left alone (note "shared result").
 //!
 //! `drive` returns notes: "fused <name>", "shared result ...", "whistle ...", "cap ...".
-#![allow(dead_code)]
 use crate::ast::*;
 use crate::simplify::simplifyBlock;
 use crate::whistle::embeds;
@@ -2268,149 +2267,3 @@ fn stmtBlockRefs(s: &Stmt) -> Vec<&Block> {
         _ => vec![],
     }
 }
-/// Scope-aware renamer: a declaration renames only the uses in its own scope (the rest of its
-/// block and nested blocks/closures); uses before it, or in sibling scopes, keep the outer name.
-struct Scoper<'a> {
-    scopes: Vec<HashMap<String, String>>,
-    k: usize,
-    ctors: &'a HashMap<String, Vec<String>>,
-}
-impl Scoper<'_> {
-    fn declare(&mut self, n: &mut String) {
-        let new = format!("{}__s{}", n, self.k);
-        self.scopes.last_mut().unwrap().insert(n.clone(), new.clone());
-        *n = new;
-    }
-    fn lookup(&self, n: &mut String) {
-        if let Some(new) = self.scopes.iter().rev().find_map(|s| s.get(n.as_str())) {
-            *n = new.clone();
-        }
-    }
-    fn pattern(&mut self, p: &mut CasePattern) {
-        match p {
-            CasePattern::Name(n) => {
-                if !isTagName(n) {
-                    self.declare(n)
-                }
-            }
-            CasePattern::Class { fields, .. } => fields.iter_mut().for_each(|f| self.pattern(f)),
-            _ => {}
-        }
-    }
-    fn stmts(&mut self, stmts: &mut [Stmt]) {
-        self.scopes.push(HashMap::new());
-        for s in stmts {
-            self.stmt(s);
-        }
-        self.scopes.pop();
-    }
-    fn stmt(&mut self, s: &mut Stmt) {
-        match s {
-            Stmt::Assign(a) => {
-                for t in &mut a.targets {
-                    if let AssignTarget::Field(obj, _) = t {
-                        self.expr(obj);
-                    }
-                }
-                a.values.iter_mut().for_each(|v| self.expr(v));
-                let decl = a.declare;
-                for t in &mut a.targets {
-                    if let AssignTarget::Var(n) = t {
-                        if decl {
-                            self.declare(n)
-                        } else {
-                            self.lookup(n)
-                        }
-                    }
-                }
-            }
-            Stmt::ForLoop(f) => {
-                self.expr(&mut f.source);
-                self.scopes.push(HashMap::new());
-                f.binders.iter_mut().for_each(|n| self.declare(n));
-                for c in &mut f.clauses {
-                    match c {
-                        ForClause::If(e) => self.expr(e),
-                        ForClause::Bind(n, e) => {
-                            self.expr(e);
-                            self.declare(n);
-                        }
-                    }
-                }
-                self.stmts(&mut f.body.stmts);
-                self.scopes.pop();
-                if let Some((n, decl)) = &mut f.result {
-                    if *decl {
-                        self.declare(n)
-                    } else {
-                        self.lookup(n)
-                    }
-                }
-            }
-            Stmt::Match(m) => {
-                m.subjects.iter_mut().for_each(|e| self.expr(e));
-                for c in &mut m.cases {
-                    self.scopes.push(HashMap::new());
-                    c.patterns.iter_mut().for_each(|p| self.pattern(p));
-                    if let Some(g) = &mut c.guard {
-                        self.expr(g);
-                    }
-                    self.stmts(&mut c.body.stmts);
-                    self.scopes.pop();
-                }
-            }
-            _ => {
-                for e in stmtExprs(s) {
-                    self.expr(e);
-                }
-                for b in stmtBlocks(s) {
-                    self.stmts(&mut b.stmts);
-                }
-            }
-        }
-    }
-    fn expr(&mut self, e: &mut Expr) {
-        match e {
-            Expr::Var(n) => self.lookup(n),
-            Expr::Bind(b) => {
-                self.expr(&mut b.value);
-                self.pattern(&mut b.case.patterns[0]);
-                if let Some(g) = &mut b.case.guard {
-                    self.expr(g);
-                }
-            }
-            Expr::Closure(c) => {
-                self.scopes.push(HashMap::new());
-                c.params.iter_mut().for_each(|p| self.declare(p));
-                self.stmts(&mut c.body.stmts);
-                self.scopes.pop();
-            }
-            Expr::Catch(c) => {
-                let CatchExpr { value, handler, .. } = &mut **c;
-                self.expr(value);
-                match handler {
-                    CatchHandler::Default(d) => self.expr(d),
-                    CatchHandler::Block { binder, body } => {
-                        self.scopes.push(HashMap::new());
-                        self.declare(binder);
-                        self.stmts(&mut body.stmts);
-                        self.scopes.pop();
-                    }
-                }
-            }
-            _ => {
-                for ch in childExprs(e) {
-                    self.expr(ch);
-                }
-            }
-        }
-    }
-}

plum-core/src/parser.rs CHANGED Viewed

@@ -850,13 +850,15 @@ impl<'a> AstParser<'a> {
         let mut stmts = Vec::new();
         for n in node.named_children(&mut cursor) {
             let u = self.unwrapExprNode(n);
+            // Every `for` stays a `Stmt::ForLoop` until `forms::lowerForms` knows which
+            // `fun*`s exist.
             if u.kind() == "for" {
-                stmts.extend(self.forStmts(self.parseForLoop(u)));
+                stmts.push(Stmt::ForLoop(self.parseForLoop(u)));
             } else if let Some(fl) = self.assignedFor(u) {
-                stmts.extend(self.forStmts(fl));
+                stmts.push(Stmt::ForLoop(fl));
             } else if let Some((mut fl, name)) = self.returnedFor(u) {
                 fl.result = Some((name.clone(), true));
-                stmts.extend(self.forStmts(fl));
+                stmts.push(Stmt::ForLoop(fl));
                 stmts.push(Stmt::Return(Some(Expr::Var(name))));
             } else if let Some(s) = self.parseStmt(n) {
                 stmts.push(s);
@@ -898,12 +900,6 @@ impl<'a> AstParser<'a> {
         Some(fl)
     }
-    /// Every `for` stays a `Stmt::ForLoop` until `forms::lowerForms` knows which
-    /// `fun*`s exist.
-    fn forStmts(&self, f: ForLoop) -> Vec<Stmt> {
-        vec![Stmt::ForLoop(f)]
-    }
     fn parseStmt(&self, node: Node) -> Option<Stmt> {
         let node = self.unwrapExprNode(node);
         Some(match node.kind() {

plum-core/src/simplify.rs CHANGED Viewed

@@ -4,7 +4,6 @@
 //! declined), never duplicated or dropped; every binder of an inlined body is renamed fresh.
 //! Plum has no `match` expression: a match is a statement, so the match rewrites work on
 //! blocks (`simplifyBlock`); `simplifyExpr` covers the expression-level rewrites.
-#![allow(dead_code)]
 use crate::ast::*;
 use std::collections::{HashMap, HashSet};
 use std::sync::atomic::{AtomicUsize, Ordering};
@@ -348,7 +347,6 @@ impl<'a> Cx<'a> {
         let mut binders: HashSet<String> = f.params.iter().map(|p| p.name.clone()).collect();
         let mut assigned: HashSet<String> = HashSet::new();
         let mut declared: HashSet<String> = HashSet::new();
-        let ctors = &self.ctors;
         renameStmts(&mut body.stmts, &mut |n, kind| match kind {
             Name::Decl => {
                 binders.insert(n.clone());
@@ -370,7 +368,7 @@ impl<'a> Cx<'a> {
         let initial: HashMap<String, String> = f.params.iter().map(|p| &p.name)
             .map(|b| (b.clone(), format!("{}__s{}", b, k)))
             .collect();
-        Scoper { scopes: vec![initial], k, ctors }.stmts(&mut body.stmts);
+        Scoper { scopes: vec![initial], k }.stmts(&mut body.stmts);
         let mut subst: HashMap<String, Expr> = HashMap::new();
         let mut binds = Vec::new();
         let mut nontrivial = 0;
@@ -595,7 +593,6 @@ impl<'a> Cx<'a> {
         let mut binders: HashSet<String> = binds.iter().filter_map(|(n, _)| n.clone()).collect();
         let mut assigned: HashSet<String> = HashSet::new();
         let mut declared: HashSet<String> = HashSet::new();
-        let ctors = &self.ctors;
         renameStmts(&mut body.stmts, &mut |n, kind| match kind {
             Name::Decl => {
                 binders.insert(n.clone());
@@ -617,7 +614,7 @@ impl<'a> Cx<'a> {
         let initial: HashMap<String, String> = binds.iter().filter_map(|(n, _)| n.as_ref())
             .map(|b| (b.clone(), format!("{}__s{}", b, k)))
             .collect();
-        Scoper { scopes: vec![initial], k, ctors }.stmts(&mut body.stmts);
+        Scoper { scopes: vec![initial], k }.stmts(&mut body.stmts);
         let mut out = Vec::new();
         let mut subst: HashMap<String, Expr> = HashMap::new();
         for (i, (n, v)) in binds.into_iter().enumerate() {
@@ -1048,13 +1045,12 @@ fn stmtBlockRefs(s: &Stmt) -> Vec<&Block> {
 /// Scope-aware renamer: a declaration renames only the uses in its own scope (the rest of its
 /// block and nested blocks/closures); uses before it, or in sibling scopes, keep the outer name.
-struct Scoper<'a> {
+struct Scoper {
     scopes: Vec<HashMap<String, String>>,
     k: usize,
-    ctors: &'a HashMap<String, Vec<String>>,
 }
-impl Scoper<'_> {
+impl Scoper {
     fn declare(&mut self, n: &mut String) {
         let new = format!("{}__s{}", n, self.k);
         self.scopes.last_mut().unwrap().insert(n.clone(), new.clone());

plum-core/src/uniqueness.rs CHANGED Viewed

@@ -536,7 +536,7 @@ impl An {
                 return Err(why.unwrap_or_else(|| format!("a caller of {} may pass a shared {v}", u.name)));
             }
         }
-        let mut s = Scan { an: self, v, boundDepth: if param.is_some() { Some(0) } else { None }, err: None, selfUnit: unit };
+        let mut s = Scan { an: self, v, boundDepth: if param.is_some() { Some(0) } else { None }, err: None };
         s.block(&u.block, true, 0);
         if let Some(e) = s.err {
             return Err(e);
@@ -597,8 +597,6 @@ struct Scan<'a> {
     v: &'a str,
     boundDepth: Option<usize>,
     err: Option<String>,
-    #[allow(dead_code)]
-    selfUnit: usize,
 }
 impl<'a> Scan<'a> {

plum-core/tests/closure_escape_test.rs CHANGED Viewed

@@ -1,13 +1,8 @@
 #![allow(non_snake_case)]
 use plum_core::closure_escape::nonEscapingFnParams;
-use plum_core::AstParser;
 fn parse(src: &str) -> plum_core::ast::Source {
-    let mut parser = tree_sitter::Parser::new();
+    plum_test_support::parse(src)
-    parser.set_language(&tree_sitter_plum::LANGUAGE.into()).unwrap();
-    let tree = parser.parse(src, None).unwrap();
-    assert!(!tree.root_node().has_error(), "{}", tree.root_node().to_sexp());
-    AstParser::new(src).parseSource(tree.root_node())
 }
 fn get(src: &str, key: &str) -> Vec<usize> {

plum-core/tests/closure_spec_test.rs CHANGED Viewed

@@ -12,18 +12,8 @@ fn gcEngine() -> wasmtime::Engine {
     wasmtime::Engine::new(&config).expect("engine with GC config should construct")
 }
-fn repoRoot() -> std::path::PathBuf {
-    std::path::Path::new(env!("CARGO_MANIFEST_DIR")).join("..")
-}
 fn load(name: &str, src: &str) -> plum_core::ast::Source {
-    let dir = std::env::temp_dir().join(format!("plum_cspec_{}_{}", name, std::process::id()));
-    std::fs::create_dir_all(&dir).unwrap();
-    let path = dir.join("main.plum");
-    std::fs::write(&path, src).unwrap();
-    let r = plum_core::loadAndMerge(&path, &repoRoot());
-    let _ = std::fs::remove_dir_all(&dir);
-    r.unwrap_or_else(|e| panic!("load: {e}"))
+    plum_test_support::load(name, src).unwrap_or_else(|e| panic!("load: {e}"))
 }
 fn compile(name: &str, src: &str) -> Vec<u8> {

plum-core/tests/forms_generic_test.rs CHANGED Viewed

@@ -4,16 +4,10 @@
 //! (plum-core cannot run wasm; the checker end of this is covered by
 //! `./target/debug/plum test` on the repro and plum-examples.)
 use plum_core::ast::*;
-use plum_core::{forms, AstParser};
+use plum_core::forms;
 fn parse(src: &str) -> Source {
-    let mut parser = tree_sitter::Parser::new();
+    plum_test_support::parse(src)
-    parser
-        .set_language(&tree_sitter_plum::LANGUAGE.into())
-        .unwrap();
-    let tree = parser.parse(src, None).unwrap();
-    assert!(!tree.root_node().has_error(), "{}", tree.root_node().to_sexp());
-    AstParser::new(src).parseSource(tree.root_node())
 }
 const DEFS: &str = "\

plum-core/tests/inline_variants_test.rs CHANGED Viewed

@@ -1,16 +1,9 @@
 #![allow(non_snake_case)]
 use plum_core::ast::*;
 use plum_core::unions::*;
-use plum_core::AstParser;
 fn parse(src: &str) -> Source {
-    let mut parser = tree_sitter::Parser::new();
+    plum_test_support::parse(src)
-    parser
-        .set_language(&tree_sitter_plum::LANGUAGE.into())
-        .unwrap();
-    let tree = parser.parse(src, None).unwrap();
-    assert!(!tree.root_node().has_error(), "{}", tree.root_node().to_sexp());
-    AstParser::new(src).parseSource(tree.root_node())
 }
 fn enumOf<'a>(s: &'a Source, name: &str) -> &'a Enum {

plum-core/tests/tail_test.rs CHANGED Viewed

@@ -1,16 +1,9 @@
 #![allow(non_snake_case)]
 use plum_core::ast::*;
 use plum_core::tail::{markTailCalls, tailCalls, TailSite};
-use plum_core::AstParser;
 fn parse(src: &str) -> Source {
-    let mut parser = tree_sitter::Parser::new();
+    plum_test_support::parse(src)
-    parser
-        .set_language(&tree_sitter_plum::LANGUAGE.into())
-        .unwrap();
-    let tree = parser.parse(src, None).unwrap();
-    assert!(!tree.root_node().has_error(), "{}", tree.root_node().to_sexp());
-    AstParser::new(src).parseSource(tree.root_node())
 }
 /// Tail calls of the first fn named `name` (a method: the one with that name).

plum-core/tests/trmc_test.rs CHANGED Viewed

@@ -30,18 +30,8 @@ fn gcEngine() -> wasmtime::Engine {
     wasmtime::Engine::new(&config).expect("engine with GC config should construct")
 }
-fn repoRoot() -> std::path::PathBuf {
-    std::path::Path::new(env!("CARGO_MANIFEST_DIR")).join("..")
-}
 fn load(name: &str, src: &str) -> plum_core::ast::Source {
-    let dir = std::env::temp_dir().join(format!("plum_trmc_{}_{}", name, std::process::id()));
-    std::fs::create_dir_all(&dir).unwrap();
-    let path = dir.join("main.plum");
-    std::fs::write(&path, src).unwrap();
-    let r = plum_core::loadAndMerge(&path, &repoRoot());
-    let _ = std::fs::remove_dir_all(&dir);
-    r.unwrap_or_else(|e| panic!("load: {e}"))
+    plum_test_support::load(name, src).unwrap_or_else(|e| panic!("load: {e}"))
 }
 /// Compiles `src` through the real pipeline and runs its `main() -> Int`.

plum-core/tests/union_lower_test.rs CHANGED Viewed

@@ -2,20 +2,9 @@
 use plum_core::ast::*;
 use plum_core::union_lower::applyPlan;
 use plum_core::unions::UnionPlan;
-use plum_core::AstParser;
 fn parse(src: &str) -> Source {
-    let mut parser = tree_sitter::Parser::new();
+    plum_test_support::parse(src)
-    parser
-        .set_language(&tree_sitter_plum::LANGUAGE.into())
-        .unwrap();
-    let tree = parser.parse(src, None).unwrap();
-    assert!(
-        !tree.root_node().has_error(),
-        "{}",
-        tree.root_node().to_sexp()
-    );
-    AstParser::new(src).parseSource(tree.root_node())
 }
 fn fnNamed<'a>(s: &'a Source, name: &str) -> &'a Fn {

plum-core/tests/unions_test.rs CHANGED Viewed

@@ -1,20 +1,9 @@
 #![allow(non_snake_case)]
 use plum_core::ast::*;
 use plum_core::unions::*;
-use plum_core::AstParser;
 fn parse(src: &str) -> Source {
-    let mut parser = tree_sitter::Parser::new();
+    plum_test_support::parse(src)
-    parser
-        .set_language(&tree_sitter_plum::LANGUAGE.into())
-        .unwrap();
-    let tree = parser.parse(src, None).unwrap();
-    assert!(
-        !tree.root_node().has_error(),
-        "{}",
-        tree.root_node().to_sexp()
-    );
-    AstParser::new(src).parseSource(tree.root_node())
 }
 fn enumOf<'a>(s: &'a Source, name: &str) -> &'a Enum {

plum-test-support/Cargo.toml ADDED Viewed

@@ -0,0 +1,13 @@
+[package]
+name = "plum-test-support"
+version = "0.1.0"
+edition = "2021"
+[dependencies]
+plum-core = { path = "../plum-core" }
+plum-checker = { path = "../plum-checker" }
+plum-wasm-codegen = { path = "../plum-wasm-codegen" }
+tree-sitter = "0.26"
+tree-sitter-plum = { path = "../plum-tooling/tree-sitter-plum" }
+wasmparser = "0.220"
+wasmtime = "47"

plum-test-support/src/lib.rs ADDED Viewed

@@ -0,0 +1,158 @@
+//! Shared helpers for the compiler's test binaries (dev-dependency only).
+#![allow(non_snake_case)]
+use plum_core::ast::Source;
+use std::path::PathBuf;
+use std::sync::atomic::{AtomicUsize, Ordering};
+pub const PRE: &str = "import std/Str\nimport std/Int\nimport std/Float\nimport std/Slice\n\n";
+pub fn repoRoot() -> PathBuf {
+    std::path::Path::new(env!("CARGO_MANIFEST_DIR")).join("..")
+}
+fn parseTree(src: &str) -> (tree_sitter::Tree, Source) {
+    let mut parser = tree_sitter::Parser::new();
+    parser
+        .set_language(&tree_sitter_plum::LANGUAGE.into())
+        .unwrap();
+    let tree = parser.parse(src, None).unwrap();
+    let ast = plum_core::AstParser::new(src).parseSource(tree.root_node());
+    (tree, ast)
+}
+/// Parses `src` without asserting the tree is error free.
+pub fn parseRaw(src: &str) -> Source {
+    parseTree(src).1
+}
+/// Parses `src`; panics with the source if the tree has syntax errors.
+pub fn parse(src: &str) -> Source {
+    let (tree, ast) = parseTree(src);
+    assert!(
+        !tree.root_node().has_error(),
+        "embedded test source has parse errors:\n{src}"
+    );
+    ast
+}
+static COUNTER: AtomicUsize = AtomicUsize::new(0);
+/// Loads `src` as `main.plum` through the real loader (imports resolve against the repo root).
+pub fn load(name: &str, src: &str) -> Result<Source, String> {
+    let n = COUNTER.fetch_add(1, Ordering::SeqCst);
+    let dir = std::env::temp_dir().join(format!("plum_ts_{}_{}_{}", name, std::process::id(), n));
+    std::fs::create_dir_all(&dir).unwrap();
+    let path = dir.join("main.plum");
+    std::fs::write(&path, src).unwrap();
+    let r = plum_core::loadAndMerge(&path, &repoRoot());
+    let _ = std::fs::remove_dir_all(&dir);
+    r.map_err(|e| format!("{e}"))
+}
+/// load + compileSource + validate; panics on any error.
+pub fn compile(name: &str, src: &str) -> Vec<u8> {
+    let source = load(name, src).unwrap_or_else(|e| panic!("load failed: {e}"));
+    let bytes = plum_wasm_codegen::compileSource(&source)
+        .unwrap_or_else(|e| panic!("compile failed: {e}"));
+    wasmparser::validate(&bytes).expect("valid wasm");
+    bytes
+}
+pub fn engine() -> wasmtime::Engine {
+    let mut config = wasmtime::Config::new();
+    config.wasm_gc(true);
+    config.wasm_function_references(true);
+    config.wasm_tail_call(true);
+    wasmtime::Engine::new(&config).expect("engine with GC config should construct")
+}
+fn instantiate(name: &str, src: &str) -> (wasmtime::Store<()>, wasmtime::Instance) {
+    let bytes = compile(name, src);
+    let engine = engine();
+    let module = wasmtime::Module::new(&engine, &bytes).unwrap();
+    let mut store = wasmtime::Store::new(&engine, ());
+    let mut linker = wasmtime::Linker::new(&engine);
+    linker
+        .define_unknown_imports_as_default_values(&mut store, &module)
+        .unwrap();
+    let instance = linker.instantiate(&mut store, &module).unwrap();
+    (store, instance)
+}
+/// Compiles `src` and runs its `main() -> Int`.
+pub fn runInt(name: &str, src: &str) -> i64 {
+    let (mut store, instance) = instantiate(name, src);
+    let main = instance
+        .get_typed_func::<(), i64>(&mut store, "main")
+        .unwrap();
+    main.call(&mut store, ()).unwrap()
+}
+/// Compiles `src` and runs its `main() -> Str`, returning the string.
+pub fn runStr(name: &str, src: &str) -> String {
+    let (mut store, instance) = instantiate(name, src);
+    let main = instance.get_func(&mut store, "main").expect("main export");
+    let mut results = [wasmtime::Val::I32(0)];
+    main.call(&mut store, &[], &mut results).unwrap();
+    let wasmtime::Val::AnyRef(Some(s)) = &results[0] else {
+        panic!("main did not return a Str");
+    };
+    let st = s.unwrap_struct(&store).unwrap();
+    let wasmtime::Val::AnyRef(Some(bytes_ref)) = st.field(&mut store, 0).unwrap() else {
+        panic!("Str.data is not a byte array");
+    };
+    let start = st.field(&mut store, 1).unwrap().unwrap_i64() as usize;
+    let len = st.field(&mut store, 2).unwrap().unwrap_i64() as usize;
+    let arr = bytes_ref.unwrap_array(&store).unwrap();
+    let mut buf = vec![0u8; arr.len(&store).unwrap() as usize];
+    arr.copy_to_i8_slice(&mut store, &mut buf).unwrap();
+    String::from_utf8_lossy(&buf[start..start + len]).into_owned()
+}
+/// load + typedSource; the checker's messages (a load error is returned as one string).
+pub fn checkErrors(name: &str, src: &str) -> Vec<String> {
+    match load(name, src) {
+        Err(e) => vec![e],
+        Ok(source) => match plum_checker::typedSource(&source) {
+            Ok(_) => vec![],
+            Err(errs) => errs.iter().map(|e| e.message.clone()).collect(),
+        },
+    }
+}
+#[cfg(test)]
+mod tests {
+    use super::*;
+    #[test]
+    fn parseCounts() {
+        assert_eq!(parse("fun main() -> Int = 1").items.len(), 1);
+    }
+    #[test]
+    #[should_panic]
+    fn parseRejectsSyntaxErrors() {
+        parse("fun main( ->");
+    }
+    #[test]
+    fn runIntValue() {
+        assert_eq!(runInt("t1", &format!("{PRE}fun main() -> Int = 40 + 2")), 42);
+    }
+    #[test]
+    fn runStrValue() {
+        assert_eq!(
+            runStr("t3", &format!("{PRE}fun main() -> Str = \"hi\"")),
+            "hi"
+        );
+    }
+    #[test]
+    fn checkErrorsBool() {
+        let errs = checkErrors("t2", &format!("{PRE}fun main() -> Bool = 1"));
+        assert_eq!(errs.len(), 1, "{errs:?}");
+        assert!(errs[0].contains("Bool"), "{errs:?}");
+    }
+}

plum-wasm-codegen/Cargo.toml CHANGED Viewed

@@ -9,6 +9,7 @@ plum-core = { path = "../plum-core" }
 plum-checker = { path = "../plum-checker" }
 [dev-dependencies]
+plum-test-support = { path = "../plum-test-support" }
 wasmparser = "0.220"
 tree-sitter = "0.26"
 tree-sitter-plum = { path = "../plum-tooling/tree-sitter-plum" }

plum-wasm-codegen/src/lib.rs CHANGED Viewed

@@ -26,7 +26,6 @@ enum TypeEntry {
 /// share ONE index space regardless of kind — a `Passive` segment's index (needed by
 /// `array.new_data`) is its position among ALL segments, active or passive.
 enum DataSegmentEntry {
-    Active(u32, Vec<u8>),
     Passive(Vec<u8>),
 }
@@ -134,11 +133,6 @@ impl WasmModule {
         idx
     }
-    pub fn addDataSegment(&mut self, offset: u32, data: &[u8]) {
-        self.data_segments
-            .push(DataSegmentEntry::Active(offset, data.to_vec()));
-    }
     /// Adds a passive segment (no implicit memory-init offset) and returns its index
     /// in the shared active/passive data-segment index space — the index `array.new_data`
     /// needs to reference it. Passive segments require a `DataCountSection` (see `finish`).
@@ -153,7 +147,7 @@ impl WasmModule {
     /// export is callable — needed because `struct.new` (and therefore constructing
     /// any GC singleton, like the pre-allocated payload-free enum variants) is not
     /// allowed inside a `global`'s own const-expr initializer (confirmed empirically
-    /// in Task 1 — `wasmtimeGcConfigAllowsStructNewInGlobalConstExpr` fails), so those
+    /// `wasmtimeGcConfigAllowsStructNewInGlobalConstExpr` fails), so those
     /// globals are declared `mutable` with a `ref.null` initial value and populated
     /// here instead.
     pub fn setStartFunction(&mut self, func_idx: u32) {
@@ -314,10 +308,6 @@ impl WasmModule {
             let mut data = DataSection::new();
             for entry in &self.data_segments {
                 match entry {
-                    DataSegmentEntry::Active(offset, bytes) => {
-                        let offset_expr = ConstExpr::i32_const(*offset as i32);
-                        data.active(0, &offset_expr, bytes.iter().copied());
-                    }
                     DataSegmentEntry::Passive(bytes) => {
                         data.passive(bytes.iter().copied());
                     }
@@ -4484,9 +4474,7 @@ struct Collector<'a> {
     /// type before any `struct.get` on it validates, and that narrowed value needs
     /// its OWN local (declared with the concrete variant's ref type) distinct from
     /// the original wide-typed subject local, which stays declared at the
-    /// supertype's type for the whole function. (Before wasm-gc, this only covered
+    /// supertype's type for the whole function.
-    /// patterns nested inside another constructor pattern's fields, depth >= 1,
-    /// since a plain i32 pointer needed no per-pattern static type at all.)
     nested_class_scratch: HashMap<usize, u32>,
     /// Slot number (the `u32` values in `nested_class_scratch`) -> the variant name
     /// it narrows to, so its scratch local can be declared with that variant's exact

plum-wasm-codegen/tests/closure_types_e2e_test.rs DELETED Viewed

@@ -1,109 +0,0 @@
-#![allow(non_snake_case)]
-use plum_wasm_codegen::compileSource;
-fn gcEngine() -> wasmtime::Engine {
-    let mut config = wasmtime::Config::new();
-    config.wasm_gc(true);
-    config.wasm_function_references(true);
-    wasmtime::Engine::new(&config).expect("engine with GC config should construct")
-}
-fn repoRoot() -> std::path::PathBuf {
-    std::path::Path::new(env!("CARGO_MANIFEST_DIR")).join("..")
-}
-fn load(name: &str, src: &str) -> Result<plum_core::ast::Source, String> {
-    let dir = std::env::temp_dir().join(format!("plum_closure_{}_{}", name, std::process::id()));
-    std::fs::create_dir_all(&dir).unwrap();
-    let path = dir.join("main.plum");
-    std::fs::write(&path, src).unwrap();
-    let r = plum_core::loadAndMerge(&path, &repoRoot());
-    let _ = std::fs::remove_dir_all(&dir);
-    r.map_err(|e| format!("{e}"))
-}
-/// Compiles `src` through the real pipeline and runs its `main() -> Int`.
-fn runInt(name: &str, src: &str) -> i64 {
-    let source = load(name, src).expect("load");
-    let bytes = compileSource(&source).unwrap_or_else(|e| panic!("compile failed: {e}"));
-    wasmparser::validate(&bytes).expect("valid wasm");
-    let engine = gcEngine();
-    let module = wasmtime::Module::new(&engine, &bytes).unwrap();
-    let mut store = wasmtime::Store::new(&engine, ());
-    let mut linker = wasmtime::Linker::new(&engine);
-    linker
-        .define_unknown_imports_as_default_values(&mut store, &module)
-        .unwrap();
-    let instance = linker.instantiate(&mut store, &module).unwrap();
-    let main = instance
-        .get_typed_func::<(), i64>(&mut store, "main")
-        .unwrap();
-    main.call(&mut store, ()).unwrap()
-}
-fn checkErrors(name: &str, src: &str) -> Vec<String> {
-    let source = load(name, src).expect("load");
-    match plum_checker::checkSource(&source) {
-        Ok(()) => Vec::new(),
-        Err(e) => e.into_iter().map(|x| x.message).collect(),
-    }
-}
-const BOX: &str = "import std/Int\n\nrecord Box(v: Int) =\n  fun get(self) -> Int = self.v\n\n";
-#[test]
-fn g1_typed_param() {
-    let src = format!("{BOX}fun ap(f: fn(Box) -> Int) -> Int = f(Box(v: 2))\n\nfun main() -> Int =\n  ap(|b: Box| b.get())\n");
-    assert_eq!(runInt("g1", &src), 2);
-}
-#[test]
-fn g2_local_closure_inferred_from_first_call() {
-    let src = format!("{BOX}fun main() -> Int =\n  get := |b| b.get()\n  get(Box(v: 2))\n");
-    assert_eq!(runInt("g2", &src), 2);
-}
-#[test]
-fn g2_never_called_is_error() {
-    let src = format!("{BOX}fun main() -> Int =\n  get := |b| b.get()\n  1\n");
-    let errs = checkErrors("g2n", &src);
-    assert!(
-        errs.iter().any(|e| e.contains("cannot infer the type of b; write |b: Type|")),
-        "{errs:?}"
-    );
-}
-#[test]
-fn g5_returned_closure() {
-    let src = "import std/Int\n\nfun adder(n: Int) -> fn(Int) -> Int =\n  |x| x + n\n\nfun main() -> Int =\n  add1 := adder(1)\n  add1(2)\n";
-    assert_eq!(runInt("g5", src), 3);
-}
-// `adder(1)(2)` (call on a call result) does not parse: the grammar has no call-on-call form.
-#[test]
-fn adder_two_levels() {
-    let src = "import std/Int\n\nfun adder(n: Int) -> fn(Int) -> fn(Int) -> Int =\n  |x| |y| x + y + n\n\nfun main() -> Int =\n  f := adder(1)\n  g := f(2)\n  g(3)\n";
-    assert_eq!(runInt("two", src), 6);
-}
-const LINK: &str = "import std/Int\n\nenum Link[T] = Nil | Cons(head: T, tail: Link[T])\n\nfun len(xs: Link[T]) -> Int = match xs\n  Nil => 0\n  Cons(_, t) => 1 + len(t)\n\n";
-/// A bare `Nil` whose `T` is fixed by a LATER argument gets the call's `Link[Int]`.
-#[test]
-fn bare_tag_fixed_by_later_arg() {
-    let src = format!("{LINK}fun push(xs: Link[T], x: T) -> Link[T] = Cons(head: x, tail: xs)\n\nfun main() -> Int =\n  len(push(push(Nil, 1), 2))\n");
-    assert_eq!(runInt("bare_later", &src), 2);
-}
-#[test]
-fn bare_tag_fixed_by_other_link_arg() {
-    let src = format!("{LINK}fun two(a: Link[T], b: Link[T]) -> Int = len(a) + len(b)\n\nfun mk(n: Int) -> Link[Int] = Cons(head: n, tail: Nil)\n\nfun main() -> Int =\n  two(Nil, mk(2)) * 10 + two(mk(1), Nil)\n");
-    assert_eq!(runInt("bare_other", &src), 11);
-}
-#[test]
-fn curried_closure_runs() {
-    let src = "import std/Int\n\nfun curry() -> fn(Int) -> fn(Int) -> Int =\n  |x| |y| x + y\n\nfun main() -> Int =\n  add2 := curry()\n  f := add2(2)\n  f(3)\n";
-    assert_eq!(runInt("curried", src), 5);
-}

plum-wasm-codegen/tests/codegen_tests.rs CHANGED Viewed

@@ -1,30 +1,8 @@
 #![allow(non_snake_case)]
-use plum_core::AstParser;
 use plum_wasm_codegen::{compileSource, compileTestSource};
 use wasm_encoder::Encode;
-fn parse(src: &str) -> plum_core::ast::Source {
-    let mut parser = tree_sitter::Parser::new();
-    parser
-        .set_language(&tree_sitter_plum::LANGUAGE.into())
-        .unwrap();
-    let tree = parser.parse(src, None).unwrap();
-    let ap = AstParser::new(src);
-    ap.parseSource(tree.root_node())
-}
-/// The wasm-gc migration (docs/superpowers/plans/2026-07-25-wasm-gc-migration.md)
-/// needs both `wasm_gc` and `wasm_function_references` enabled — confirmed
-/// empirically (see the `wasmtimeGcConfig*` tests below) rather than assumed from
-/// docs, since wasmtime's own doc comment on `Config::wasm_gc` warns its GC support
-/// is still in progress. Every test that instantiates/runs compiled output uses
-/// this shared engine so the whole harness stays on one config.
+use plum_test_support::{engine as gcEngine, parse, repoRoot};
-fn gcEngine() -> wasmtime::Engine {
-    let mut config = wasmtime::Config::new();
-    config.wasm_gc(true);
-    config.wasm_function_references(true);
-    wasmtime::Engine::new(&config).expect("engine with GC config should construct")
-}
 #[test]
 fn outputValidates() {
@@ -1059,10 +1037,6 @@ fun main() -> Int =
 // ---- mixed types via enums (T4) ----
-fn repoRoot() -> std::path::PathBuf {
-    std::path::Path::new(env!("CARGO_MANIFEST_DIR")).join("..")
-}
 /// Compiles `src` as a real file (so `import std/...` resolves against the repo's
 /// `plum-std`) and returns the wasm instance's `main` export plus its store.
 fn runMerged<R: wasmtime::WasmResults>(name: &str, src: &str) -> R {

plum-wasm-codegen/tests/e2e_mem/main.rs ADDED Viewed

@@ -0,0 +1,4 @@
+#![allow(non_snake_case)]
+mod reuse;
+mod unique_inplace;
+mod unique_spread;

plum-wasm-codegen/tests/{reuse_e2e_test.rs → e2e_mem/reuse.rs} RENAMED Viewed

@@ -1,37 +1,17 @@
-#![allow(non_snake_case)]
-use plum_wasm_codegen::compileSource;
+use plum_test_support::{engine, PRE};
-fn gcEngine() -> wasmtime::Engine {
-    let mut config = wasmtime::Config::new();
-    config.wasm_gc(true);
-    config.wasm_function_references(true);
-    wasmtime::Engine::new(&config).expect("engine with GC config should construct")
-}
-fn repoRoot() -> std::path::PathBuf {
-    std::path::Path::new(env!("CARGO_MANIFEST_DIR")).join("..")
-}
 fn load(name: &str, src: &str, reuse: bool) -> Result<plum_core::ast::Source, String> {
-    let dir = std::env::temp_dir().join(format!("plum_reuse_{}_{}", name, std::process::id()));
-    std::fs::create_dir_all(&dir).unwrap();
-    let path = dir.join("main.plum");
-    std::fs::write(&path, src).unwrap();
-    let r = plum_core::loadAndMerge(&path, &repoRoot());
-    let _ = std::fs::remove_dir_all(&dir);
-    let mut r = r.map_err(|e| format!("{e}"))?;
+    let mut r = plum_test_support::load(name, src)?;
     if reuse {
         plum_core::reuse::markReuse(&mut r);
     }
     Ok(r)
 }
-/// Compiles `src` through the real pipeline and runs its `main() -> Int`.
 fn runInt(name: &str, src: &str, reuse: bool) -> i64 {
     let source = load(name, src, reuse).expect("load");
-    let bytes = compileSource(&source).unwrap_or_else(|e| panic!("compile failed: {e}"));
+    let bytes = plum_wasm_codegen::compileSource(&source).unwrap_or_else(|e| panic!("compile failed: {e}"));
     wasmparser::validate(&bytes).expect("valid wasm");
-    let engine = gcEngine();
+    let engine = engine();
     let module = wasmtime::Module::new(&engine, &bytes).unwrap();
     let mut store = wasmtime::Store::new(&engine, ());
     let mut linker = wasmtime::Linker::new(&engine);
@@ -45,11 +25,10 @@ fn runInt(name: &str, src: &str, reuse: bool) -> i64 {
     main.call(&mut store, ()).unwrap()
 }
 /// Number of `struct.new` instructions in the whole module.
 fn structNewCount(name: &str, src: &str, reuse: bool) -> usize {
     let source = load(name, src, reuse).expect("load");
-    let bytes = compileSource(&source).unwrap_or_else(|e| panic!("compile failed: {e}"));
+    let bytes = plum_wasm_codegen::compileSource(&source).unwrap_or_else(|e| panic!("compile failed: {e}"));
     wasmparser::validate(&bytes).expect("valid wasm");
     let mut n = 0;
     for payload in wasmparser::Parser::new(0).parse_all(&bytes) {
@@ -65,8 +44,6 @@ fn structNewCount(name: &str, src: &str, reuse: bool) -> usize {
     n
 }
-const PRE: &str = "import std/Str\nimport std/Int\nimport std/Float\nimport std/Slice\n\n";
 const INC: &str = "
 enum Link =
   | Nil

plum-wasm-codegen/tests/{unique_inplace_e2e_test.rs → e2e_mem/unique_inplace.rs} RENAMED Viewed

@@ -1,46 +1,4 @@
-#![allow(non_snake_case)]
-use plum_wasm_codegen::compileSource;
+use plum_test_support::*;
-fn gcEngine() -> wasmtime::Engine {
-    let mut config = wasmtime::Config::new();
-    config.wasm_gc(true);
-    config.wasm_function_references(true);
-    wasmtime::Engine::new(&config).expect("engine with GC config should construct")
-}
-fn repoRoot() -> std::path::PathBuf {
-    std::path::Path::new(env!("CARGO_MANIFEST_DIR")).join("..")
-}
-fn load(name: &str, src: &str) -> Result<plum_core::ast::Source, String> {
-    let dir = std::env::temp_dir().join(format!("plum_own_inplace_{}_{}", name, std::process::id()));
-    std::fs::create_dir_all(&dir).unwrap();
-    let path = dir.join("main.plum");
-    std::fs::write(&path, src).unwrap();
-    let r = plum_core::loadAndMerge(&path, &repoRoot());
-    let _ = std::fs::remove_dir_all(&dir);
-    r.map_err(|e| format!("{e}"))
-}
-/// Compiles `src` through the real pipeline and runs its `main() -> Int`.
-fn runInt(name: &str, src: &str) -> i64 {
-    let source = load(name, src).expect("load");
-    let bytes = compileSource(&source).unwrap_or_else(|e| panic!("compile failed: {e}"));
-    wasmparser::validate(&bytes).expect("valid wasm");
-    let engine = gcEngine();
-    let module = wasmtime::Module::new(&engine, &bytes).unwrap();
-    let mut store = wasmtime::Store::new(&engine, ());
-    let mut linker = wasmtime::Linker::new(&engine);
-    linker
-        .define_unknown_imports_as_default_values(&mut store, &module)
-        .unwrap();
-    let instance = linker.instantiate(&mut store, &module).unwrap();
-    let main = instance
-        .get_typed_func::<(), i64>(&mut store, "main")
-        .unwrap();
-    main.call(&mut store, ()).unwrap()
-}
 /// True when the real pipeline (checker `typedSource`, fusion on) flags the spread in
 /// fn `name` as unique, i.e. proved written in place by uniqueness alone.
@@ -57,8 +15,6 @@ fn spreadIsUnique(name: &str, fnName: &str, src: &str) -> bool {
         .expect("fn kept")
 }
-const PRE: &str = "import std/Str\nimport std/Int\nimport std/Float\nimport std/Slice\n\n";
 fn prog(body: &str) -> String {
     format!("{PRE}{body}")
 }

plum-wasm-codegen/tests/{unique_spread_e2e_test.rs → e2e_mem/unique_spread.rs} RENAMED Viewed

@@ -1,25 +1,6 @@
-#![allow(non_snake_case)]
-use plum_wasm_codegen::compileSource;
+use plum_test_support::{engine, PRE};
-fn gcEngine() -> wasmtime::Engine {
-    let mut config = wasmtime::Config::new();
-    config.wasm_gc(true);
-    config.wasm_function_references(true);
-    wasmtime::Engine::new(&config).expect("engine with GC config should construct")
-}
-fn repoRoot() -> std::path::PathBuf {
-    std::path::Path::new(env!("CARGO_MANIFEST_DIR")).join("..")
-}
 fn load(name: &str, src: &str, unique: bool) -> Result<plum_core::ast::Source, String> {
-    let dir = std::env::temp_dir().join(format!("plum_unique_spread_{}_{}", name, std::process::id()));
-    std::fs::create_dir_all(&dir).unwrap();
-    let path = dir.join("main.plum");
-    std::fs::write(&path, src).unwrap();
-    let r = plum_core::loadAndMerge(&path, &repoRoot());
-    let _ = std::fs::remove_dir_all(&dir);
-    let mut r = r.map_err(|e| format!("{e}"))?;
+    let mut r = plum_test_support::load(name, src)?;
     if unique {
         for it in r.items.iter_mut() {
             if let plum_core::ast::Item::Fn(f) = it {
@@ -36,12 +17,11 @@ fn load(name: &str, src: &str, unique: bool) -> Result<plum_core::ast::Source, S
     Ok(r)
 }
-/// Compiles `src` through the real pipeline and runs its `main() -> Int`.
 fn runInt(name: &str, src: &str, unique: bool) -> i64 {
     let source = load(name, src, unique).expect("load");
-    let bytes = compileSource(&source).unwrap_or_else(|e| panic!("compile failed: {e}"));
+    let bytes = plum_wasm_codegen::compileSource(&source).unwrap_or_else(|e| panic!("compile failed: {e}"));
     wasmparser::validate(&bytes).expect("valid wasm");
-    let engine = gcEngine();
+    let engine = engine();
     let module = wasmtime::Module::new(&engine, &bytes).unwrap();
     let mut store = wasmtime::Store::new(&engine, ());
     let mut linker = wasmtime::Linker::new(&engine);
@@ -55,11 +35,10 @@ fn runInt(name: &str, src: &str, unique: bool) -> i64 {
     main.call(&mut store, ()).unwrap()
 }
 /// Number of `struct.new` instructions in the whole module.
 fn structNewCount(name: &str, src: &str, unique: bool) -> usize {
     let source = load(name, src, unique).expect("load");
-    let bytes = compileSource(&source).unwrap_or_else(|e| panic!("compile failed: {e}"));
+    let bytes = plum_wasm_codegen::compileSource(&source).unwrap_or_else(|e| panic!("compile failed: {e}"));
     wasmparser::validate(&bytes).expect("valid wasm");
     let mut n = 0;
     for payload in wasmparser::Parser::new(0).parse_all(&bytes) {
@@ -75,8 +54,6 @@ fn structNewCount(name: &str, src: &str, unique: bool) -> usize {
     n
 }
-const PRE: &str = "import std/Str\nimport std/Int\nimport std/Float\nimport std/Slice\n\n";
 const SPREAD: &str = "
 record Cell(x: Int, y: Int)

plum-wasm-codegen/tests/e2e_records/empty_record_embed.rs ADDED Viewed

@@ -0,0 +1,32 @@
+use plum_test_support::{runInt, PRE};
+fn prog(body: &str) -> String {
+    format!("{PRE}{body}")
+}
+#[test]
+fn field_less_record_embedding_field_less_trait_dispatches_in_a_slice() {
+    let src = prog("\
+trait Actor =
+  fun act(self, n: Int) -> Int = n
+  fun draw(self) -> Int = 1
+record Panel(Actor) =
+  override fun draw(self) -> Int = 10
+record Ship(Actor, speed: Int) =
+  override fun act(self, n: Int) -> Int = n + self.speed
+  override fun draw(self) -> Int = 100
+fun main() -> Int =
+  xs: Slice[Actor] := Slice[Actor]()
+  xs.push(Panel())
+  xs.push(Ship(speed: 5))
+  total := 0
+  for i := range 2
+    total = total + xs.at(i).draw() + xs.at(i).act(1000)
+  total
+");
+    // Panel: draw 10 + act 1000; Ship: draw 100 + act 1005.
+    assert_eq!(runInt("slice", &src), 2115);
+}

plum-wasm-codegen/tests/{enum_init_e2e_test.rs → e2e_records/enum_init.rs} RENAMED Viewed

@@ -1,48 +1,5 @@
-#![allow(non_snake_case)]
+use plum_test_support::{load, runInt};
 use plum_wasm_codegen::compileSource;
-fn gcEngine() -> wasmtime::Engine {
-    let mut config = wasmtime::Config::new();
-    config.wasm_gc(true);
-    config.wasm_function_references(true);
-    wasmtime::Engine::new(&config).expect("engine with GC config should construct")
-}
-fn repoRoot() -> std::path::PathBuf {
-    std::path::Path::new(env!("CARGO_MANIFEST_DIR")).join("..")
-}
-fn load(name: &str, src: &str) -> Result<plum_core::ast::Source, String> {
-    let dir = std::env::temp_dir().join(format!("plum_enum_init_{}_{}", name, std::process::id()));
-    std::fs::create_dir_all(&dir).unwrap();
-    let path = dir.join("main.plum");
-    std::fs::write(&path, src).unwrap();
-    let r = plum_core::loadAndMerge(&path, &repoRoot());
-    let _ = std::fs::remove_dir_all(&dir);
-    r.map_err(|e| format!("{e}"))
-}
-/// Compiles `src` through the real pipeline and runs its `main() -> Int`.
-fn runInt(name: &str, src: &str) -> i64 {
-    let source = load(name, src).expect("load");
-    let bytes = compileSource(&source).unwrap_or_else(|e| panic!("compile failed: {e}"));
-    wasmparser::validate(&bytes).expect("valid wasm");
-    let engine = gcEngine();
-    let module = wasmtime::Module::new(&engine, &bytes).unwrap();
-    let mut store = wasmtime::Store::new(&engine, ());
-    let mut linker = wasmtime::Linker::new(&engine);
-    linker
-        .define_unknown_imports_as_default_values(&mut store, &module)
-        .unwrap();
-    let instance = linker.instantiate(&mut store, &module).unwrap();
-    let main = instance
-        .get_typed_func::<(), i64>(&mut store, "main")
-        .unwrap();
-    main.call(&mut store, ()).unwrap()
-}
 const LINK: &str = "enum Link[T] =
   | Nil
   | Cons(head: T, tail: Link[T])

plum-wasm-codegen/tests/{inline_variants_e2e_test.rs → e2e_records/inline_variants.rs} RENAMED Viewed

@@ -1,45 +1,4 @@
-#![allow(non_snake_case)]
-use plum_wasm_codegen::compileSource;
+use plum_test_support::{load, runInt};
-fn gcEngine() -> wasmtime::Engine {
-    let mut config = wasmtime::Config::new();
-    config.wasm_gc(true);
-    config.wasm_function_references(true);
-    wasmtime::Engine::new(&config).expect("engine with GC config should construct")
-}
-fn repoRoot() -> std::path::PathBuf {
-    std::path::Path::new(env!("CARGO_MANIFEST_DIR")).join("..")
-}
-fn load(name: &str, src: &str) -> Result<plum_core::ast::Source, String> {
-    let dir = std::env::temp_dir().join(format!("plum_inline_{}_{}", name, std::process::id()));
-    std::fs::create_dir_all(&dir).unwrap();
-    let path = dir.join("main.plum");
-    std::fs::write(&path, src).unwrap();
-    let r = plum_core::loadAndMerge(&path, &repoRoot());
-    let _ = std::fs::remove_dir_all(&dir);
-    r.map_err(|e| format!("{e}"))
-}
-/// Compiles `src` through the real pipeline and runs its `main() -> Int`.
-fn runInt(name: &str, src: &str) -> i64 {
-    let source = load(name, src).expect("load");
-    let bytes = compileSource(&source).unwrap_or_else(|e| panic!("compile failed: {e}"));
-    wasmparser::validate(&bytes).expect("valid wasm");
-    let engine = gcEngine();
-    let module = wasmtime::Module::new(&engine, &bytes).unwrap();
-    let mut store = wasmtime::Store::new(&engine, ());
-    let mut linker = wasmtime::Linker::new(&engine);
-    linker
-        .define_unknown_imports_as_default_values(&mut store, &module)
-        .unwrap();
-    let instance = linker.instantiate(&mut store, &module).unwrap();
-    let main = instance
-        .get_typed_func::<(), i64>(&mut store, "main")
-        .unwrap();
-    main.call(&mut store, ()).unwrap()
-}
 fn checkErrors(name: &str, src: &str) -> Vec<String> {
     let source = load(name, src).expect("load");

plum-wasm-codegen/tests/e2e_records/main.rs ADDED Viewed

@@ -0,0 +1,7 @@
+#![allow(non_snake_case)]
+mod empty_record_embed;
+mod enum_init;
+mod inline_variants;
+mod record_embed;
+mod record_init;
+mod unboxed_variants;

plum-wasm-codegen/tests/{record_embed_e2e_test.rs → e2e_records/record_embed.rs} RENAMED Viewed

@@ -1,48 +1,4 @@
-#![allow(non_snake_case)]
-use plum_wasm_codegen::compileSource;
+use plum_test_support::{runInt, PRE};
-fn gcEngine() -> wasmtime::Engine {
-    let mut config = wasmtime::Config::new();
-    config.wasm_gc(true);
-    config.wasm_function_references(true);
-    wasmtime::Engine::new(&config).expect("engine with GC config should construct")
-}
-fn repoRoot() -> std::path::PathBuf {
-    std::path::Path::new(env!("CARGO_MANIFEST_DIR")).join("..")
-}
-fn load(name: &str, src: &str) -> Result<plum_core::ast::Source, String> {
-    let dir = std::env::temp_dir().join(format!("plum_record_embed_{}_{}", name, std::process::id()));
-    std::fs::create_dir_all(&dir).unwrap();
-    let path = dir.join("main.plum");
-    std::fs::write(&path, src).unwrap();
-    let r = plum_core::loadAndMerge(&path, &repoRoot());
-    let _ = std::fs::remove_dir_all(&dir);
-    r.map_err(|e| format!("{e}"))
-}
-/// Compiles `src` through the real pipeline and runs its `main() -> Int`.
-fn runInt(name: &str, src: &str) -> i64 {
-    let source = load(name, src).expect("load");
-    let bytes = compileSource(&source).unwrap_or_else(|e| panic!("compile failed: {e}"));
-    wasmparser::validate(&bytes).expect("valid wasm");
-    let engine = gcEngine();
-    let module = wasmtime::Module::new(&engine, &bytes).unwrap();
-    let mut store = wasmtime::Store::new(&engine, ());
-    let mut linker = wasmtime::Linker::new(&engine);
-    linker
-        .define_unknown_imports_as_default_values(&mut store, &module)
-        .unwrap();
-    let instance = linker.instantiate(&mut store, &module).unwrap();
-    let main = instance
-        .get_typed_func::<(), i64>(&mut store, "main")
-        .unwrap();
-    main.call(&mut store, ()).unwrap()
-}
-const PRE: &str = "import std/Str\nimport std/Int\nimport std/Float\nimport std/Slice\n\n";
 fn prog(body: &str) -> String {
     format!("{PRE}{body}")

plum-wasm-codegen/tests/{record_init_e2e_test.rs → e2e_records/record_init.rs} RENAMED Viewed

@@ -1,48 +1,5 @@
-#![allow(non_snake_case)]
-use plum_wasm_codegen::compileSource;
+use plum_test_support::{runInt, PRE};
-fn gcEngine() -> wasmtime::Engine {
-    let mut config = wasmtime::Config::new();
-    config.wasm_gc(true);
-    config.wasm_function_references(true);
-    wasmtime::Engine::new(&config).expect("engine with GC config should construct")
-}
-fn repoRoot() -> std::path::PathBuf {
-    std::path::Path::new(env!("CARGO_MANIFEST_DIR")).join("..")
-}
-fn load(name: &str, src: &str) -> Result<plum_core::ast::Source, String> {
-    let dir = std::env::temp_dir().join(format!("plum_record_init_{}_{}", name, std::process::id()));
-    std::fs::create_dir_all(&dir).unwrap();
-    let path = dir.join("main.plum");
-    std::fs::write(&path, src).unwrap();
-    let r = plum_core::loadAndMerge(&path, &repoRoot());
-    let _ = std::fs::remove_dir_all(&dir);
+use plum_test_support::load;
-    r.map_err(|e| format!("{e}"))
-}
-/// Compiles `src` through the real pipeline and runs its `main() -> Int`.
-fn runInt(name: &str, src: &str) -> i64 {
-    let source = load(name, src).expect("load");
-    let bytes = compileSource(&source).unwrap_or_else(|e| panic!("compile failed: {e}"));
-    wasmparser::validate(&bytes).expect("valid wasm");
-    let engine = gcEngine();
-    let module = wasmtime::Module::new(&engine, &bytes).unwrap();
-    let mut store = wasmtime::Store::new(&engine, ());
-    let mut linker = wasmtime::Linker::new(&engine);
-    linker
-        .define_unknown_imports_as_default_values(&mut store, &module)
-        .unwrap();
-    let instance = linker.instantiate(&mut store, &module).unwrap();
-    let main = instance
-        .get_typed_func::<(), i64>(&mut store, "main")
-        .unwrap();
-    main.call(&mut store, ()).unwrap()
-}
-const PRE: &str = "import std/Str\nimport std/Int\nimport std/Float\nimport std/Slice\n\n";
 fn prog(body: &str) -> String {
     format!("{PRE}{body}")

plum-wasm-codegen/tests/{unboxed_variants_e2e_test.rs → e2e_records/unboxed_variants.rs} RENAMED Viewed

@@ -1,26 +1,8 @@
-#![allow(non_snake_case)]
 //! Unboxed layout: union-enum members and inline variants are wasm-gc subtypes
 //! of the enum, so constructing one allocates exactly one struct.
-use plum_wasm_codegen::compileSource;
+use plum_test_support::{compile, runInt};
 use wasmparser::{Operator, Parser, Payload};
-fn repoRoot() -> std::path::PathBuf {
-    std::path::Path::new(env!("CARGO_MANIFEST_DIR")).join("..")
-}
-fn compile(name: &str, src: &str) -> Vec<u8> {
-    let dir = std::env::temp_dir().join(format!("plum_unboxed_{}_{}", name, std::process::id()));
-    std::fs::create_dir_all(&dir).unwrap();
-    let path = dir.join("main.plum");
-    std::fs::write(&path, src).unwrap();
-    let r = plum_core::loadAndMerge(&path, &repoRoot());
-    let _ = std::fs::remove_dir_all(&dir);
-    let source = r.unwrap_or_else(|e| panic!("load failed: {e}"));
-    let bytes = compileSource(&source).unwrap_or_else(|e| panic!("compile failed: {e}"));
-    wasmparser::validate(&bytes).expect("valid wasm");
-    bytes
-}
 /// Number of `struct.new` instructions in the exported `main` function.
 fn structNewsInMain(bytes: &[u8]) -> usize {
     let mut imports = 0u32;
@@ -58,25 +40,6 @@ fn structNewsInMain(bytes: &[u8]) -> usize {
     n
 }
-fn runInt(name: &str, src: &str) -> i64 {
-    let bytes = compile(name, src);
-    let mut config = wasmtime::Config::new();
-    config.wasm_gc(true);
-    config.wasm_function_references(true);
-    let engine = wasmtime::Engine::new(&config).expect("engine");
-    let module = wasmtime::Module::new(&engine, &bytes).unwrap();
-    let mut store = wasmtime::Store::new(&engine, ());
-    let mut linker = wasmtime::Linker::new(&engine);
-    linker
-        .define_unknown_imports_as_default_values(&mut store, &module)
-        .unwrap();
-    let instance = linker.instantiate(&mut store, &module).unwrap();
-    let main = instance
-        .get_typed_func::<(), i64>(&mut store, "main")
-        .unwrap();
-    main.call(&mut store, ()).unwrap()
-}
 const HEAD: &str = "\
 import std/Str
 import std/Int

plum-wasm-codegen/tests/{closure_tail_e2e_test.rs → e2e_tail/closure_tail.rs} RENAMED Viewed

@@ -1,42 +1,4 @@
-#![allow(non_snake_case)]
-use plum_wasm_codegen::compileSource;
+use plum_test_support::{compile, runInt};
-fn gcEngine() -> wasmtime::Engine {
-    let mut config = wasmtime::Config::new();
-    config.wasm_gc(true);
-    config.wasm_function_references(true);
-    config.wasm_tail_call(true);
-    wasmtime::Engine::new(&config).expect("engine with GC config should construct")
-}
-fn repoRoot() -> std::path::PathBuf {
-    std::path::Path::new(env!("CARGO_MANIFEST_DIR")).join("..")
-}
-fn compile(name: &str, src: &str) -> Vec<u8> {
-    let dir = std::env::temp_dir().join(format!("plum_tail_{}_{}", name, std::process::id()));
-    std::fs::create_dir_all(&dir).unwrap();
-    let path = dir.join("main.plum");
-    std::fs::write(&path, src).unwrap();
-    let r = plum_core::loadAndMerge(&path, &repoRoot());
-    let _ = std::fs::remove_dir_all(&dir);
-    let source = r.unwrap_or_else(|e| panic!("load: {e}"));
-    let bytes = compileSource(&source).unwrap_or_else(|e| panic!("compile failed: {e}"));
-    wasmparser::validate(&bytes).expect("valid wasm");
-    bytes
-}
-fn runInt(name: &str, src: &str) -> i64 {
-    let bytes = compile(name, src);
-    let engine = gcEngine();
-    let module = wasmtime::Module::new(&engine, &bytes).expect("module");
-    let mut store = wasmtime::Store::new(&engine, ());
-    let mut linker = wasmtime::Linker::new(&engine);
-    linker.define_unknown_imports_as_traps(&module).unwrap();
-    let inst = linker.instantiate(&mut store, &module).expect("instantiate");
-    let main = inst.get_typed_func::<(), i64>(&mut store, "main").expect("main");
-    main.call(&mut store, ()).expect("run")
-}
 const HEAD: &str = "import std/Int\n\n";

plum-wasm-codegen/tests/{error_tail_e2e_test.rs → e2e_tail/error_tail.rs} RENAMED Viewed

@@ -1,42 +1,4 @@
-#![allow(non_snake_case)]
-use plum_wasm_codegen::compileSource;
+use plum_test_support::{compile, runInt};
-fn gcEngine() -> wasmtime::Engine {
-    let mut config = wasmtime::Config::new();
-    config.wasm_gc(true);
-    config.wasm_function_references(true);
-    config.wasm_tail_call(true);
-    wasmtime::Engine::new(&config).expect("engine with GC config should construct")
-}
-fn repoRoot() -> std::path::PathBuf {
-    std::path::Path::new(env!("CARGO_MANIFEST_DIR")).join("..")
-}
-fn compile(name: &str, src: &str) -> Vec<u8> {
-    let dir = std::env::temp_dir().join(format!("plum_tail_{}_{}", name, std::process::id()));
-    std::fs::create_dir_all(&dir).unwrap();
-    let path = dir.join("main.plum");
-    std::fs::write(&path, src).unwrap();
-    let r = plum_core::loadAndMerge(&path, &repoRoot());
-    let _ = std::fs::remove_dir_all(&dir);
-    let source = r.unwrap_or_else(|e| panic!("load: {e}"));
-    let bytes = compileSource(&source).unwrap_or_else(|e| panic!("compile failed: {e}"));
-    wasmparser::validate(&bytes).expect("valid wasm");
-    bytes
-}
-fn runInt(name: &str, src: &str) -> i64 {
-    let bytes = compile(name, src);
-    let engine = gcEngine();
-    let module = wasmtime::Module::new(&engine, &bytes).expect("module");
-    let mut store = wasmtime::Store::new(&engine, ());
-    let mut linker = wasmtime::Linker::new(&engine);
-    linker.define_unknown_imports_as_traps(&module).unwrap();
-    let inst = linker.instantiate(&mut store, &module).expect("instantiate");
-    let main = inst.get_typed_func::<(), i64>(&mut store, "main").expect("main");
-    main.call(&mut store, ()).expect("run")
-}
 fn countReturnCalls(bytes: &[u8]) -> usize {
     let mut n = 0;

plum-wasm-codegen/tests/{loop_break_e2e_test.rs → e2e_tail/loop_break.rs} RENAMED Viewed

@@ -1,50 +1,4 @@
-#![allow(non_snake_case)]
-use plum_wasm_codegen::compileSource;
+use plum_test_support::{runInt, PRE};
-fn tailEngine() -> wasmtime::Engine {
-    let mut config = wasmtime::Config::new();
-    config.wasm_gc(true);
-    config.wasm_function_references(true);
-    config.wasm_tail_call(true);
-    wasmtime::Engine::new(&config).expect("engine with GC and tail calls should construct")
-}
-fn repoRoot() -> std::path::PathBuf {
-    std::path::Path::new(env!("CARGO_MANIFEST_DIR")).join("..")
-}
-fn compile(name: &str, src: &str) -> Vec<u8> {
-    let dir = std::env::temp_dir().join(format!("plum_tail_calls_{}_{}", name, std::process::id()));
-    std::fs::create_dir_all(&dir).unwrap();
-    let path = dir.join("main.plum");
-    std::fs::write(&path, src).unwrap();
-    let r = plum_core::loadAndMerge(&path, &repoRoot());
-    let _ = std::fs::remove_dir_all(&dir);
-    let source = r.unwrap_or_else(|e| panic!("load: {e}"));
-    let bytes = compileSource(&source).unwrap_or_else(|e| panic!("compile failed: {e}"));
-    let mut v = wasmparser::Validator::new_with_features(wasmparser::WasmFeatures::all());
-    v.validate_all(&bytes).expect("valid wasm");
-    bytes
-}
-/// Compiles `src` through the real pipeline and runs its `main() -> Int`.
-fn runInt(name: &str, src: &str) -> i64 {
-    let bytes = compile(name, src);
-    let engine = tailEngine();
-    let module = wasmtime::Module::new(&engine, &bytes).unwrap();
-    let mut store = wasmtime::Store::new(&engine, ());
-    let mut linker = wasmtime::Linker::new(&engine);
-    linker
-        .define_unknown_imports_as_default_values(&mut store, &module)
-        .unwrap();
-    let instance = linker.instantiate(&mut store, &module).unwrap();
-    let main = instance
-        .get_typed_func::<(), i64>(&mut store, "main")
-        .unwrap();
-    main.call(&mut store, ()).unwrap()
-}
-const PRE: &str = "import std/Str\nimport std/Int\nimport std/Float\nimport std/Slice\n\n";
 fn prog(body: &str) -> String {
     format!("{PRE}{body}")

plum-wasm-codegen/tests/e2e_tail/main.rs ADDED Viewed

@@ -0,0 +1,5 @@
+#![allow(non_snake_case)]
+mod closure_tail;
+mod error_tail;
+mod loop_break;
+mod tail;

plum-wasm-codegen/tests/{tail_calls_e2e_test.rs → e2e_tail/tail.rs} RENAMED Viewed

@@ -1,50 +1,4 @@
-#![allow(non_snake_case)]
-use plum_wasm_codegen::compileSource;
+use plum_test_support::{compile, runInt, PRE};
-fn tailEngine() -> wasmtime::Engine {
-    let mut config = wasmtime::Config::new();
-    config.wasm_gc(true);
-    config.wasm_function_references(true);
-    config.wasm_tail_call(true);
-    wasmtime::Engine::new(&config).expect("engine with GC and tail calls should construct")
-}
-fn repoRoot() -> std::path::PathBuf {
-    std::path::Path::new(env!("CARGO_MANIFEST_DIR")).join("..")
-}
-fn compile(name: &str, src: &str) -> Vec<u8> {
-    let dir = std::env::temp_dir().join(format!("plum_tail_calls_{}_{}", name, std::process::id()));
-    std::fs::create_dir_all(&dir).unwrap();
-    let path = dir.join("main.plum");
-    std::fs::write(&path, src).unwrap();
-    let r = plum_core::loadAndMerge(&path, &repoRoot());
-    let _ = std::fs::remove_dir_all(&dir);
-    let source = r.unwrap_or_else(|e| panic!("load: {e}"));
-    let bytes = compileSource(&source).unwrap_or_else(|e| panic!("compile failed: {e}"));
-    let mut v = wasmparser::Validator::new_with_features(wasmparser::WasmFeatures::all());
-    v.validate_all(&bytes).expect("valid wasm");
-    bytes
-}
-/// Compiles `src` through the real pipeline and runs its `main() -> Int`.
-fn runInt(name: &str, src: &str) -> i64 {
-    let bytes = compile(name, src);
-    let engine = tailEngine();
-    let module = wasmtime::Module::new(&engine, &bytes).unwrap();
-    let mut store = wasmtime::Store::new(&engine, ());
-    let mut linker = wasmtime::Linker::new(&engine);
-    linker
-        .define_unknown_imports_as_default_values(&mut store, &module)
-        .unwrap();
-    let instance = linker.instantiate(&mut store, &module).unwrap();
-    let main = instance
-        .get_typed_func::<(), i64>(&mut store, "main")
-        .unwrap();
-    main.call(&mut store, ()).unwrap()
-}
-const PRE: &str = "import std/Str\nimport std/Int\nimport std/Float\nimport std/Slice\n\n";
 fn prog(body: &str) -> String {
     format!("{PRE}{body}")
@@ -281,3 +235,26 @@ fun main() -> Int = isEven(10)
     assert!(ops.returnCalls >= 1, "isEven should return_call isOdd");
     assert!(ops.calls.is_empty());
 }
+const HEAD: &str = "import std/Int\n\n";
+#[test]
+fn tail_call_in_match_arm() {
+    let src = format!("{HEAD}enum Step =\n  | Go(n: Int)\n  | Stop\n\nfun run(s: Step, acc: Int) -> Int = match s\n  Go(n) => run(if n == 0 then Stop else Go(n - 1), acc + 1)\n  Stop => acc\n\nfun main() -> Int = run(Go(1000000), 0)\n");
+    assert_eq!(runInt("match", &src), 1000001);
+}
+#[test]
+fn non_tail_union_wrap_not_tail() {
+    // The callee returns Int but the fn returns Int?: the call is wrapped on the way
+    // out, so it must stay a normal call and still produce the right value.
+    let src = format!("{HEAD}fun inner(n: Int) -> Int = n + 1\n\nfun outer(n: Int) -> Int? = inner(n)\n\nfun main() -> Int =\n  v := outer(41)\n  v ?: 0\n");
+    assert_eq!(runInt("wrap", &src), 42);
+}
+#[test]
+fn big_link_built_and_summed() {
+    let src = format!("{HEAD}enum Link =\n  | Nil\n  | Cons(head: Int, tail: Link)\n\nfun build(n: Int, acc: Link) -> Link = if n == 0 then acc else build(n - 1, Cons(n, acc))\n\nfun sum(l: Link, acc: Int) -> Int = match l\n  Nil => acc\n  Cons(h, t) => sum(t, acc + h)\n\nfun main() -> Int = sum(build(200000, Nil), 0)\n");
+    assert_eq!(runInt("link", &src), 200000i64 * 200001 / 2);
+}

plum-wasm-codegen/tests/e2e_types/closure_types.rs ADDED Viewed

@@ -0,0 +1,50 @@
+use plum_test_support::*;
+const BOX: &str = "import std/Int\n\nrecord Box(v: Int) =\n  fun get(self) -> Int = self.v\n\n";
+#[test]
+fn g1_typed_param() {
+    let src = format!("{BOX}fun ap(f: fn(Box) -> Int) -> Int = f(Box(v: 2))\n\nfun main() -> Int =\n  ap(|b: Box| b.get())\n");
+    assert_eq!(runInt("g1", &src), 2);
+}
+#[test]
+fn g2_local_closure_inferred_from_first_call() {
+    let src = format!("{BOX}fun main() -> Int =\n  get := |b| b.get()\n  get(Box(v: 2))\n");
+    assert_eq!(runInt("g2", &src), 2);
+}
+#[test]
+fn g5_returned_closure() {
+    let src = "import std/Int\n\nfun adder(n: Int) -> fn(Int) -> Int =\n  |x| x + n\n\nfun main() -> Int =\n  add1 := adder(1)\n  add1(2)\n";
+    assert_eq!(runInt("g5", src), 3);
+}
+// `adder(1)(2)` (call on a call result) does not parse: the grammar has no call-on-call form.
+#[test]
+fn adder_two_levels() {
+    let src = "import std/Int\n\nfun adder(n: Int) -> fn(Int) -> fn(Int) -> Int =\n  |x| |y| x + y + n\n\nfun main() -> Int =\n  f := adder(1)\n  g := f(2)\n  g(3)\n";
+    assert_eq!(runInt("two", src), 6);
+}
+const LINK: &str = "import std/Int\n\nenum Link[T] = Nil | Cons(head: T, tail: Link[T])\n\nfun len(xs: Link[T]) -> Int = match xs\n  Nil => 0\n  Cons(_, t) => 1 + len(t)\n\n";
+/// A bare `Nil` whose `T` is fixed by a LATER argument gets the call's `Link[Int]`.
+#[test]
+fn bare_tag_fixed_by_later_arg() {
+    let src = format!("{LINK}fun push(xs: Link[T], x: T) -> Link[T] = Cons(head: x, tail: xs)\n\nfun main() -> Int =\n  len(push(push(Nil, 1), 2))\n");
+    assert_eq!(runInt("bare_later", &src), 2);
+}
+#[test]
+fn bare_tag_fixed_by_other_link_arg() {
+    let src = format!("{LINK}fun two(a: Link[T], b: Link[T]) -> Int = len(a) + len(b)\n\nfun mk(n: Int) -> Link[Int] = Cons(head: n, tail: Nil)\n\nfun main() -> Int =\n  two(Nil, mk(2)) * 10 + two(mk(1), Nil)\n");
+    assert_eq!(runInt("bare_other", &src), 11);
+}
+#[test]
+fn curried_closure_runs() {
+    let src = "import std/Int\n\nfun curry() -> fn(Int) -> fn(Int) -> Int =\n  |x| |y| x + y\n\nfun main() -> Int =\n  add2 := curry()\n  f := add2(2)\n  f(3)\n";
+    assert_eq!(runInt("curried", src), 5);
+}

plum-wasm-codegen/tests/{io_entry_e2e_test.rs → e2e_types/io_entry.rs} RENAMED Viewed

@@ -1,25 +1,8 @@
-#![allow(non_snake_case)]
-use plum_wasm_codegen::compileSource;
+use plum_test_support::{compile, engine};
-fn gcEngine() -> wasmtime::Engine {
-    let mut config = wasmtime::Config::new();
-    config.wasm_gc(true);
-    config.wasm_function_references(true);
-    wasmtime::Engine::new(&config).expect("engine with GC config should construct")
-}
 fn build(name: &str, src: &str) -> (wasmtime::Engine, wasmtime::Module) {
-    let root = std::path::Path::new(env!("CARGO_MANIFEST_DIR")).join("..");
-    let dir = std::env::temp_dir().join(format!("plum_io_entry_{}_{}", name, std::process::id()));
-    std::fs::create_dir_all(&dir).unwrap();
-    let path = dir.join("main.plum");
-    std::fs::write(&path, src).unwrap();
-    let source = plum_core::loadAndMerge(&path, &root);
-    let _ = std::fs::remove_dir_all(&dir);
+    let bytes = compile(name, src);
-    let source = source.unwrap_or_else(|e| panic!("load failed: {e}"));
-    let bytes = compileSource(&source).unwrap_or_else(|e| panic!("compile failed: {e}"));
-    wasmparser::validate(&bytes).expect("valid wasm");
-    let engine = gcEngine();
+    let engine = engine();
     let module = wasmtime::Module::new(&engine, &bytes).unwrap();
     (engine, module)
 }
@@ -32,12 +15,12 @@ fn instantiate(engine: &wasmtime::Engine, module: &wasmtime::Module) -> (wasmtim
     (store, instance)
 }
-const PRE: &str = "import std/Str\nimport std/Int\nimport std/Float\nimport std/Io\n\n";
+const PRE_IO: &str = "import std/Str\nimport std/Int\nimport std/Float\nimport std/Io\n\n";
 #[test]
 fn entry_point_receives_io() {
     let src = format!(
-        "{PRE}export fun update(io: Io, n: Int) -> Int =\n  w := io.screenWidth()\n  n + 1\n\nfun main(io: Io) -> Int =\n  h := io.screenHeight()\n  41\n"
+        "{PRE_IO}export fun update(io: Io, n: Int) -> Int =\n  w := io.screenWidth()\n  n + 1\n\nfun main(io: Io) -> Int =\n  h := io.screenHeight()\n  41\n"
     );
     let (engine, module) = build("recv", &src);
     let (mut store, instance) = instantiate(&engine, &module);
@@ -49,8 +32,8 @@ fn entry_point_receives_io() {
 #[test]
 fn export_abi_unchanged_with_io_param() {
-    let withIo = format!("{PRE}export fun update(io: Io, n: Int, f: Float) -> Int =\n  w := io.screenWidth()\n  n\n");
+    let withIo = format!("{PRE_IO}export fun update(io: Io, n: Int, f: Float) -> Int =\n  w := io.screenWidth()\n  n\n");
-    let without = format!("{PRE}export fun update(n: Int, f: Float) -> Int = n\n");
+    let without = format!("{PRE_IO}export fun update(n: Int, f: Float) -> Int = n\n");
     let sig = |name: &str, src: &str| {
         let (_, module) = build(name, src);
         let e = module.exports().find(|e| e.name() == "update").unwrap();

plum-wasm-codegen/tests/e2e_types/main.rs ADDED Viewed

@@ -0,0 +1,6 @@
+#![allow(non_snake_case)]
+mod closure_types;
+mod io_entry;
+mod traits;
+mod type_param_static;
+mod unions;

plum-wasm-codegen/tests/{traits_e2e_test.rs → e2e_types/traits.rs} RENAMED Viewed

@@ -1,48 +1,4 @@
-#![allow(non_snake_case)]
-use plum_wasm_codegen::compileSource;
+use plum_test_support::*;
-fn gcEngine() -> wasmtime::Engine {
-    let mut config = wasmtime::Config::new();
-    config.wasm_gc(true);
-    config.wasm_function_references(true);
-    wasmtime::Engine::new(&config).expect("engine with GC config should construct")
-}
-fn repoRoot() -> std::path::PathBuf {
-    std::path::Path::new(env!("CARGO_MANIFEST_DIR")).join("..")
-}
-fn load(name: &str, src: &str) -> Result<plum_core::ast::Source, String> {
-    let dir = std::env::temp_dir().join(format!("plum_traits_{}_{}", name, std::process::id()));
-    std::fs::create_dir_all(&dir).unwrap();
-    let path = dir.join("main.plum");
-    std::fs::write(&path, src).unwrap();
-    let r = plum_core::loadAndMerge(&path, &repoRoot());
-    let _ = std::fs::remove_dir_all(&dir);
-    r.map_err(|e| format!("{e}"))
-}
-/// Compiles `src` through the real pipeline and runs its `main() -> Int`.
-fn runInt(name: &str, src: &str) -> i64 {
-    let source = load(name, src).expect("load");
-    let bytes = compileSource(&source).unwrap_or_else(|e| panic!("compile failed: {e}"));
-    wasmparser::validate(&bytes).expect("valid wasm");
-    let engine = gcEngine();
-    let module = wasmtime::Module::new(&engine, &bytes).unwrap();
-    let mut store = wasmtime::Store::new(&engine, ());
-    let mut linker = wasmtime::Linker::new(&engine);
-    linker
-        .define_unknown_imports_as_default_values(&mut store, &module)
-        .unwrap();
-    let instance = linker.instantiate(&mut store, &module).unwrap();
-    let main = instance
-        .get_typed_func::<(), i64>(&mut store, "main")
-        .unwrap();
-    main.call(&mut store, ()).unwrap()
-}
-const PRE: &str = "import std/Str\nimport std/Int\nimport std/Float\nimport std/Slice\n\n";
 fn prog(body: &str) -> String {
     format!("{PRE}{body}")
@@ -245,13 +201,6 @@ fn opsOfExport(bytes: &[u8], name: &str) -> Vec<String> {
     ops
 }
-fn compileOk(name: &str, src: &str) -> Vec<u8> {
-    let source = load(name, src).expect("load");
-    let bytes = compileSource(&source).unwrap_or_else(|e| panic!("compile failed: {e}"));
-    wasmparser::validate(&bytes).expect("valid wasm");
-    bytes
-}
 const ACTORS: &str = "\
 trait Actor(mut x: Int, mut y: Int) =
   fun hit(self) -> Int
@@ -271,7 +220,7 @@ fun readY(a: Actor) -> Int = a.y
 fun main() -> Int =
   readY(Box(x: 1, y: 7, w: 3))
 "));
-    let bytes = compileOk("direct_read", &src);
+    let bytes = compile("direct_read", &src);
     let ops = opsOfExport(&bytes, "readY");
     assert!(ops.iter().any(|o| o.starts_with("StructGet")), "{ops:?}");
     assert!(!ops.iter().any(|o| o.starts_with("Call") || o.starts_with("RefTest") || o.starts_with("RefCast")), "{ops:?}");
@@ -293,7 +242,7 @@ fun main() -> Int =
     same = 1
   same * 100 + b.y
 "));
-    let bytes = compileOk("identity", &src);
+    let bytes = compile("identity", &src);
     let ops = opsOfExport(&bytes, "asActor");
     assert!(!ops.iter().any(|o| o.starts_with("StructNew")), "{ops:?}");
     assert_eq!(runInt("identity_run", &src), 109);

plum-wasm-codegen/tests/{type_param_static_test.rs → e2e_types/type_param_static.rs} RENAMED Viewed

@@ -1,47 +1,4 @@
-#![allow(non_snake_case)]
-use plum_wasm_codegen::compileSource;
+use plum_test_support::*;
-fn gcEngine() -> wasmtime::Engine {
-    let mut config = wasmtime::Config::new();
-    config.wasm_gc(true);
-    config.wasm_function_references(true);
-    wasmtime::Engine::new(&config).expect("engine")
-}
-fn load(name: &str, src: &str) -> Result<plum_core::ast::Source, String> {
-    let root = std::path::Path::new(env!("CARGO_MANIFEST_DIR")).join("..");
-    let dir = std::env::temp_dir().join(format!("plum_tps_{}_{}", name, std::process::id()));
-    std::fs::create_dir_all(&dir).unwrap();
-    let path = dir.join("main.plum");
-    std::fs::write(&path, src).unwrap();
-    let r = plum_core::loadAndMerge(&path, &root);
-    let _ = std::fs::remove_dir_all(&dir);
-    r.map_err(|e| format!("{e}"))
-}
-fn runInt(name: &str, src: &str) -> i64 {
-    let source = load(name, src).expect("load");
-    let bytes = compileSource(&source).unwrap_or_else(|e| panic!("compile failed: {e}"));
-    wasmparser::validate(&bytes).expect("valid wasm");
-    let engine = gcEngine();
-    let module = wasmtime::Module::new(&engine, &bytes).unwrap();
-    let mut store = wasmtime::Store::new(&engine, ());
-    let mut linker = wasmtime::Linker::new(&engine);
-    linker
-        .define_unknown_imports_as_default_values(&mut store, &module)
-        .unwrap();
-    let instance = linker.instantiate(&mut store, &module).unwrap();
-    let main = instance.get_typed_func::<(), i64>(&mut store, "main").unwrap();
-    main.call(&mut store, ()).unwrap()
-}
-fn checkErrors(name: &str, src: &str) -> Vec<String> {
-    let source = load(name, src).expect("load");
-    match plum_checker::checkSource(&source) {
-        Ok(()) => Vec::new(),
-        Err(e) => e.into_iter().map(|x| x.message).collect(),
-    }
-}
 #[test]
 fn static_on_type_param() {

plum-wasm-codegen/tests/e2e_types/unions.rs ADDED Viewed

@@ -0,0 +1,89 @@
+use plum_test_support::*;
+const DEFS: &str = "\
+import std/Str
+import std/Int
+import std/Float
+import std/Slice
+struct Circle(r: Float) =
+  fun area(self) -> Float = self.r * self.r * 3.0
+record Rectangle(w: Float, h: Float) =
+  fun area(self) -> Float = self.w * self.h
+enum Shape = Circle | Rectangle
+";
+fn withDefs(body: &str) -> String {
+    format!("{DEFS}{body}")
+}
+#[test]
+fn member_into_optional_and_error_unions() {
+    let src = withDefs(
+        "\
+fun opt() -> Shape? =
+  Circle(r: 2.0)
+fun bang() -> !Shape =
+  Rectangle(w: 2.0, h: 2.0)
+fun typed() -> ParseError!Shape =
+  Circle(r: 1.0)
+fun main() -> Int =
+  a := opt() ?: Rectangle(w: 0.0, h: 0.0)
+  b := bang() catch Rectangle(w: 0.0, h: 0.0)
+  c := typed() catch Rectangle(w: 0.0, h: 0.0)
+  Int(a.area() + b.area() + c.area())
+",
+    );
+    let src = src.replace(
+        "import std/Slice\n",
+        "import std/Slice\n\nerror ParseError = Bad | Worse\n",
+    );
+    assert_eq!(runInt("optional", &src), 19);
+}
+#[test]
+fn invariant_list_rejected() {
+    let src = withDefs(
+        "\
+fun take(xs: Slice[Shape]) -> Int =
+  1
+fun go(cs: Slice[Circle]) -> Int =
+  take(cs)
+",
+    );
+    assert!(!checkErrors("invariant", &src).is_empty());
+}
+#[test]
+fn variadic_dispatch_is_an_error() {
+    let src = "\
+import std/Str
+import std/Int
+import std/Float
+record Pa(v: Int) =
+  fun sum(self, xs: ...Int) -> Int = self.v
+record Pb(v: Int) =
+  fun sum(self, xs: ...Int) -> Int = self.v
+enum Pair = Pa | Pb
+fun go(p: Pair) -> Int =
+  p.sum(1, 2)
+";
+    let errs = checkErrors("variadic", src);
+    assert!(
+        errs.iter().any(|e| e.contains(
+            "Pair.sum: auto-dispatch can't forward a variadic parameter; define sum on Pair"
+        )),
+        "{errs:?}"
+    );
+}

plum-wasm-codegen/tests/empty_record_embed_e2e_test.rs DELETED Viewed

@@ -1,76 +0,0 @@
-#![allow(non_snake_case)]
-use plum_wasm_codegen::compileSource;
-fn gcEngine() -> wasmtime::Engine {
-    let mut config = wasmtime::Config::new();
-    config.wasm_gc(true);
-    config.wasm_function_references(true);
-    wasmtime::Engine::new(&config).expect("engine with GC config should construct")
-}
-fn repoRoot() -> std::path::PathBuf {
-    std::path::Path::new(env!("CARGO_MANIFEST_DIR")).join("..")
-}
-fn load(name: &str, src: &str) -> Result<plum_core::ast::Source, String> {
-    let dir = std::env::temp_dir().join(format!("plum_empty_record_embed_{}_{}", name, std::process::id()));
-    std::fs::create_dir_all(&dir).unwrap();
-    let path = dir.join("main.plum");
-    std::fs::write(&path, src).unwrap();
-    let r = plum_core::loadAndMerge(&path, &repoRoot());
-    let _ = std::fs::remove_dir_all(&dir);
-    r.map_err(|e| format!("{e}"))
-}
-/// Compiles `src` through the real pipeline and runs its `main() -> Int`.
-fn runInt(name: &str, src: &str) -> i64 {
-    let source = load(name, src).expect("load");
-    let bytes = compileSource(&source).unwrap_or_else(|e| panic!("compile failed: {e}"));
-    wasmparser::validate(&bytes).expect("valid wasm");
-    let engine = gcEngine();
-    let module = wasmtime::Module::new(&engine, &bytes).unwrap();
-    let mut store = wasmtime::Store::new(&engine, ());
-    let mut linker = wasmtime::Linker::new(&engine);
-    linker
-        .define_unknown_imports_as_default_values(&mut store, &module)
-        .unwrap();
-    let instance = linker.instantiate(&mut store, &module).unwrap();
-    let main = instance
-        .get_typed_func::<(), i64>(&mut store, "main")
-        .unwrap();
-    main.call(&mut store, ()).unwrap()
-}
-const PRE: &str = "import std/Str\nimport std/Int\nimport std/Float\nimport std/Slice\n\n";
-fn prog(body: &str) -> String {
-    format!("{PRE}{body}")
-}
-#[test]
-fn field_less_record_embedding_field_less_trait_dispatches_in_a_slice() {
-    let src = prog("\
-trait Actor =
-  fun act(self, n: Int) -> Int = n
-  fun draw(self) -> Int = 1
-record Panel(Actor) =
-  override fun draw(self) -> Int = 10
-record Ship(Actor, speed: Int) =
-  override fun act(self, n: Int) -> Int = n + self.speed
-  override fun draw(self) -> Int = 100
-fun main() -> Int =
-  xs: Slice[Actor] := Slice[Actor]()
-  xs.push(Panel())
-  xs.push(Ship(speed: 5))
-  total := 0
-  for i := range 2
-    total = total + xs.at(i).draw() + xs.at(i).act(1000)
-  total
-");
-    // Panel: draw 10 + act 1000; Ship: draw 100 + act 1005.
-    assert_eq!(runInt("slice", &src), 2115);
-}

plum-wasm-codegen/tests/examples_test.rs CHANGED Viewed

@@ -1,14 +1,11 @@
 #![allow(non_snake_case)]
+use plum_test_support::{engine, repoRoot};
 use plum_wasm_codegen::compileSource;
 fn examplesDir() -> std::path::PathBuf {
     std::path::Path::new(env!("CARGO_MANIFEST_DIR")).join("../plum-examples")
 }
-fn libPath() -> std::path::PathBuf {
-    std::path::Path::new(env!("CARGO_MANIFEST_DIR")).join("..")
-}
 /// Loads `name` via the REAL compilation path (`loadAndMerge`, resolving its
 /// own `import`s against the repo root — see `plum-core::loader::loadAndMerge`'s
 /// doc comment) rather than parsing it in isolation — several example files
@@ -16,19 +13,10 @@ fn libPath() -> std::path::PathBuf {
 /// single-file parse would leave those names undeclared.
 fn parseFile(name: &str) -> plum_core::ast::Source {
     let path = examplesDir().join(name);
-    plum_core::loadAndMerge(&path, &libPath())
+    plum_core::loadAndMerge(&path, &repoRoot())
         .unwrap_or_else(|e| panic!("failed to load {}: {}", path.display(), e))
 }
-/// See the identically-named helper in codegen_tests.rs for why both features
-/// are needed (part of the wasm-gc migration, docs/superpowers/plans/2026-07-25-wasm-gc-migration.md).
-fn gcEngine() -> wasmtime::Engine {
-    let mut config = wasmtime::Config::new();
-    config.wasm_gc(true);
-    config.wasm_function_references(true);
-    wasmtime::Engine::new(&config).expect("engine with GC config should construct")
-}
 fn assertCompiles(name: &str) -> Vec<u8> {
     let source = parseFile(name);
     let bytes =
@@ -55,7 +43,7 @@ fn assertCompiles(name: &str) -> Vec<u8> {
 #[test]
 fn ioExampleCompilesAndRunsCorrectly() {
     let bytes = assertCompiles("basics.plum");
-    let engine = gcEngine();
+    let engine = engine();
     let module = wasmtime::Module::new(&engine, &bytes).expect("module should be loadable");
     let mut store = wasmtime::Store::new(&engine, ());
@@ -186,7 +174,7 @@ fn const_table_1000_entries() {
     std::fs::create_dir_all(&dir).unwrap();
     let path = dir.join("t.plum");
     std::fs::write(&path, src).unwrap();
-    let source = plum_core::loadAndMerge(&path, &libPath()).expect("1000-const file should load");
+    let source = plum_core::loadAndMerge(&path, &repoRoot()).expect("1000-const file should load");
     let bytes = compileSource(&source).expect("1000-const file should compile");
     assert!(wasmparser::validate(&bytes).is_ok());
     std::fs::remove_dir_all(&dir).ok();

plum-wasm-codegen/tests/fusion_alloc_test.rs CHANGED Viewed

@@ -2,25 +2,16 @@
 //! Fusion allocation checks: compile through the real pipeline (checker `typedSource`
 //! runs the supercompiler stage) and count `struct.new` of cell types per function.
 use plum_wasm_codegen::compileSource;
+use plum_test_support::repoRoot;
 use std::collections::HashMap;
 use std::collections::HashSet;
-fn repoRoot() -> std::path::PathBuf {
-    std::path::Path::new(env!("CARGO_MANIFEST_DIR")).join("..")
-}
 fn loadFile(path: &std::path::Path) -> plum_core::ast::Source {
     plum_core::loadAndMerge(path, &repoRoot()).unwrap_or_else(|e| panic!("load: {e}"))
 }
 fn load(name: &str, src: &str) -> plum_core::ast::Source {
-    let dir = std::env::temp_dir().join(format!("plum_fusion_alloc_{}_{}", name, std::process::id()));
-    std::fs::create_dir_all(&dir).unwrap();
-    let path = dir.join("main.plum");
-    std::fs::write(&path, src).unwrap();
-    let r = plum_core::loadAndMerge(&path, &repoRoot());
-    let _ = std::fs::remove_dir_all(&dir);
-    r.unwrap_or_else(|e| panic!("load: {e}"))
+    plum_test_support::load(name, src).unwrap_or_else(|e| panic!("load: {e}"))
 }
 fn compile(source: &plum_core::ast::Source, fusion: bool) -> Vec<u8> {

plum-wasm-codegen/tests/tail_call_e2e_test.rs DELETED Viewed

@@ -1,79 +0,0 @@
-#![allow(non_snake_case)]
-use plum_wasm_codegen::compileSource;
-fn gcEngine() -> wasmtime::Engine {
-    let mut config = wasmtime::Config::new();
-    config.wasm_gc(true);
-    config.wasm_function_references(true);
-    config.wasm_tail_call(true);
-    wasmtime::Engine::new(&config).expect("engine with GC config should construct")
-}
-fn repoRoot() -> std::path::PathBuf {
-    std::path::Path::new(env!("CARGO_MANIFEST_DIR")).join("..")
-}
-fn compile(name: &str, src: &str) -> Vec<u8> {
-    let dir = std::env::temp_dir().join(format!("plum_tail_{}_{}", name, std::process::id()));
-    std::fs::create_dir_all(&dir).unwrap();
-    let path = dir.join("main.plum");
-    std::fs::write(&path, src).unwrap();
-    let r = plum_core::loadAndMerge(&path, &repoRoot());
-    let _ = std::fs::remove_dir_all(&dir);
-    let source = r.unwrap_or_else(|e| panic!("load: {e}"));
-    let bytes = compileSource(&source).unwrap_or_else(|e| panic!("compile failed: {e}"));
-    wasmparser::validate(&bytes).expect("valid wasm");
-    bytes
-}
-fn runInt(name: &str, src: &str) -> i64 {
-    let bytes = compile(name, src);
-    let engine = gcEngine();
-    let module = wasmtime::Module::new(&engine, &bytes).expect("module");
-    let mut store = wasmtime::Store::new(&engine, ());
-    let mut linker = wasmtime::Linker::new(&engine);
-    linker.define_unknown_imports_as_traps(&module).unwrap();
-    let inst = linker.instantiate(&mut store, &module).expect("instantiate");
-    let main = inst.get_typed_func::<(), i64>(&mut store, "main").expect("main");
-    main.call(&mut store, ()).expect("run")
-}
-const HEAD: &str = "import std/Int\n\n";
-#[test]
-fn self_tail_call_deep() {
-    let src = format!("{HEAD}fun count(n: Int, acc: Int) -> Int = if n == 0 then acc else count(n - 1, acc + 1)\n\nfun main() -> Int = count(1000000, 0)\n");
-    assert_eq!(runInt("self", &src), 1000000);
-}
-#[test]
-fn mutual_tail_call_deep() {
-    let src = format!("{HEAD}fun even(n: Int) -> Int = if n == 0 then 1 else odd(n - 1)\n\nfun odd(n: Int) -> Int = if n == 0 then 0 else even(n - 1)\n\nfun main() -> Int = even(1000000)\n");
-    assert_eq!(runInt("mutual", &src), 1);
-}
-#[test]
-fn tail_call_in_match_arm() {
-    let src = format!("{HEAD}enum Step =\n  | Go(n: Int)\n  | Stop\n\nfun run(s: Step, acc: Int) -> Int = match s\n  Go(n) => run(if n == 0 then Stop else Go(n - 1), acc + 1)\n  Stop => acc\n\nfun main() -> Int = run(Go(1000000), 0)\n");
-    assert_eq!(runInt("match", &src), 1000001);
-}
-#[test]
-fn non_tail_union_wrap_not_tail() {
-    // The callee returns Int but the fn returns Int?: the call is wrapped on the way
-    // out, so it must stay a normal call and still produce the right value.
-    let src = format!("{HEAD}fun inner(n: Int) -> Int = n + 1\n\nfun outer(n: Int) -> Int? = inner(n)\n\nfun main() -> Int =\n  v := outer(41)\n  v ?: 0\n");
-    assert_eq!(runInt("wrap", &src), 42);
-}
-#[test]
-fn closure_tail_call() {
-    let src = format!("{HEAD}fun spin(f: fn(Int) -> Int, n: Int) -> Int = if n == 0 then 0 else spin(f, f(n) - 1)\n\nfun viaClosure(g: fn(Int) -> Int, x: Int) -> Int = g(x)\n\nfun main() -> Int = spin(|n| n, 1000000) + viaClosure(|x| x + 1, 1)\n");
-    assert_eq!(runInt("closure", &src), 2);
-}
-#[test]
-fn big_link_built_and_summed() {
-    let src = format!("{HEAD}enum Link =\n  | Nil\n  | Cons(head: Int, tail: Link)\n\nfun build(n: Int, acc: Link) -> Link = if n == 0 then acc else build(n - 1, Cons(n, acc))\n\nfun sum(l: Link, acc: Int) -> Int = match l\n  Nil => acc\n  Cons(h, t) => sum(t, acc + h)\n\nfun main() -> Int = sum(build(200000, Nil), 0)\n");
-    assert_eq!(runInt("link", &src), 200000i64 * 200001 / 2);
-}

plum-wasm-codegen/tests/unions_e2e_test.rs DELETED Viewed

@@ -1,138 +0,0 @@
-#![allow(non_snake_case)]
-use plum_wasm_codegen::compileSource;
-fn gcEngine() -> wasmtime::Engine {
-    let mut config = wasmtime::Config::new();
-    config.wasm_gc(true);
-    config.wasm_function_references(true);
-    wasmtime::Engine::new(&config).expect("engine with GC config should construct")
-}
-fn repoRoot() -> std::path::PathBuf {
-    std::path::Path::new(env!("CARGO_MANIFEST_DIR")).join("..")
-}
-fn load(name: &str, src: &str) -> Result<plum_core::ast::Source, String> {
-    let dir = std::env::temp_dir().join(format!("plum_unions_{}_{}", name, std::process::id()));
-    std::fs::create_dir_all(&dir).unwrap();
-    let path = dir.join("main.plum");
-    std::fs::write(&path, src).unwrap();
-    let r = plum_core::loadAndMerge(&path, &repoRoot());
-    let _ = std::fs::remove_dir_all(&dir);
-    r.map_err(|e| format!("{e}"))
-}
-/// Compiles `src` through the real pipeline and runs its `main() -> Int`.
-fn runInt(name: &str, src: &str) -> i64 {
-    let source = load(name, src).expect("load");
-    let bytes = compileSource(&source).unwrap_or_else(|e| panic!("compile failed: {e}"));
-    wasmparser::validate(&bytes).expect("valid wasm");
-    let engine = gcEngine();
-    let module = wasmtime::Module::new(&engine, &bytes).unwrap();
-    let mut store = wasmtime::Store::new(&engine, ());
-    let mut linker = wasmtime::Linker::new(&engine);
-    linker
-        .define_unknown_imports_as_default_values(&mut store, &module)
-        .unwrap();
-    let instance = linker.instantiate(&mut store, &module).unwrap();
-    let main = instance
-        .get_typed_func::<(), i64>(&mut store, "main")
-        .unwrap();
-    main.call(&mut store, ()).unwrap()
-}
-fn checkErrors(name: &str, src: &str) -> Vec<String> {
-    let source = load(name, src).expect("load");
-    match plum_checker::checkSource(&source) {
-        Ok(()) => Vec::new(),
-        Err(e) => e.into_iter().map(|x| x.message).collect(),
-    }
-}
-const DEFS: &str = "\
-import std/Str
-import std/Int
-import std/Float
-import std/Slice
-struct Circle(r: Float) =
-  fun area(self) -> Float = self.r * self.r * 3.0
-record Rectangle(w: Float, h: Float) =
-  fun area(self) -> Float = self.w * self.h
-enum Shape = Circle | Rectangle
-";
-fn withDefs(body: &str) -> String {
-    format!("{DEFS}{body}")
-}
-#[test]
-fn member_into_optional_and_error_unions() {
-    let src = withDefs(
-        "\
-fun opt() -> Shape? =
-  Circle(r: 2.0)
-fun bang() -> !Shape =
-  Rectangle(w: 2.0, h: 2.0)
-fun typed() -> ParseError!Shape =
-  Circle(r: 1.0)
-fun main() -> Int =
-  a := opt() ?: Rectangle(w: 0.0, h: 0.0)
-  b := bang() catch Rectangle(w: 0.0, h: 0.0)
-  c := typed() catch Rectangle(w: 0.0, h: 0.0)
-  Int(a.area() + b.area() + c.area())
-",
-    );
-    let src = src.replace(
-        "import std/Slice\n",
-        "import std/Slice\n\nerror ParseError = Bad | Worse\n",
-    );
-    assert_eq!(runInt("optional", &src), 19);
-}
-#[test]
-fn invariant_list_rejected() {
-    let src = withDefs(
-        "\
-fun take(xs: Slice[Shape]) -> Int =
-  1
-fun go(cs: Slice[Circle]) -> Int =
-  take(cs)
-",
-    );
-    assert!(!checkErrors("invariant", &src).is_empty());
-}
-#[test]
-fn variadic_dispatch_is_an_error() {
-    let src = "\
-import std/Str
-import std/Int
-import std/Float
-record Pa(v: Int) =
-  fun sum(self, xs: ...Int) -> Int = self.v
-record Pb(v: Int) =
-  fun sum(self, xs: ...Int) -> Int = self.v
-enum Pair = Pa | Pb
-fun go(p: Pair) -> Int =
-  p.sum(1, 2)
-";
-    let errs = checkErrors("variadic", src);
-    assert!(
-        errs.iter().any(|e| e.contains(
-            "Pair.sum: auto-dispatch can't forward a variadic parameter; define sum on Pair"
-        )),
-        "{errs:?}"
-    );
-}

scripts/wasm-hashes.sh ADDED Viewed

@@ -0,0 +1,31 @@
+#!/usr/bin/env bash
+# Usage: scripts/wasm-hashes.sh REV OUT
+# Compiles every plum-examples/**/*.plum (most have no `fun main`, so no filter) at git REV
+# (one fresh `plum compile` process per file) and writes `<sha256>  <relpath>` lines to OUT,
+# sorted by relpath. Files that fail to compile print `FAIL  <relpath>`.
+set -u
+REV="${1:?usage: wasm-hashes.sh REV OUT}"
+OUT="${2:?usage: wasm-hashes.sh REV OUT}"
+case "$OUT" in /*) ;; *) OUT="$PWD/$OUT" ;; esac
+REPO="$(git rev-parse --show-toplevel)"
+BASE="${TMPDIR:-/tmp}"; BASE="${BASE%/}"
+TARGET="${CARGO_TARGET_DIR:-$BASE/plum-wasm-hashes-target}"
+WT="$(mktemp -d "$BASE/plum-wasm-hashes.XXXXXX")"
+trap 'git -C "$REPO" worktree remove --force "$WT/wt" >/dev/null 2>&1; rm -rf "$WT"' EXIT
+git -C "$REPO" worktree add --detach "$WT/wt" "$REV" >/dev/null 2>&1 || { echo "cannot checkout $REV" >&2; exit 1; }
+(cd "$WT/wt" && CARGO_TARGET_DIR="$TARGET" cargo build -q -p plum-cli) || { echo "build failed" >&2; exit 1; }
+PLUM="$TARGET/debug/plum"
+[ -x "$PLUM" ] || { echo "no plum binary at $PLUM" >&2; exit 1; }
+TMPOUT="$WT/lines.txt"; : > "$TMPOUT"
+cd "$WT/wt"
+find plum-examples -name '*.plum' | LC_ALL=C sort | while read -r f; do
+  if "$PLUM" compile "$f" -o "$WT/out.wasm" >/dev/null 2>&1; then
+    echo "$(shasum -a 256 "$WT/out.wasm" | cut -d' ' -f1)  $f" >> "$TMPOUT"
+  else
+    echo "FAIL  $f" >> "$TMPOUT"
+  fi
+  rm -f "$WT/out.wasm"
+done
+LC_ALL=C sort -k2 "$TMPOUT" > "$OUT"