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Interpreter fallback DAG reliance - #125

Merged

briansrls merged 35 commits into

mainfrom

cursor/interpreter-fallback-dag-reliance-3cd3

Mar 9, 2026

Merged

Interpreter fallback DAG reliance#125
briansrls merged 35 commits into
mainfrom
cursor/interpreter-fallback-dag-reliance-3cd3

Commits on Mar 8, 2026
- Add Invariants 7 & 8; create interpreter fallback design doc
  
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  4a38022
- Expand Root Cause E: catalog all 8 unhandled Expr variants in catch-all
  
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  0c0591a
- Identify architectural root cause: flat statement-level lowering vs tree-structured AST
  
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  d9fa063
- Key finding: Collection lowering already exists, just isn't used in Phase 3
  
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  d9aa053
- Revised recommendation: expression extraction, not language restriction
  
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- Impact analysis: expression extraction resolves 8 of 14 postmortem items
  
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  0b3b60a
- Identify deepest root cause: statement-centric lowering in expression-centric language
  
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  ec2b253
- Scope lower_expr: 5 context fields, 4 expression arms, 18 components deleted
  
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  d4eca7a
- Root cause all remaining items: three patterns underlie the entire postmortem
  
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  e241e95
- Reframe: compiler Option is a redundant optionality model bypassing DAG cardinality
  
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- Add PLAN.md: four-phase plan to resolve all 14 postmortem items
  
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- Phase 1: add LoweringContext fields and explicit Expr arms in resolve_return_expr_source
  
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  81aaa6e
- refactor: rename resolve_return_expr_source to lower_expr, return Result<_, LowerError>
  
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  b1d1e7c
- Remove lower_warn function, its call sites, and DAGLANG_LOWER_WARNINGS env var check
  
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  6a888c4
- Remove all interpreter fallback: eliminate synthesize_expr_compute and synthesize_tagged_evaluator
  
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  a36ab20
- Remove ExprCompute, PipeOp, ForOp from PrimitiveOpKind
  
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  dd4be4e
- Phase 1 complete: delete ExprCompute/PipeOp/ForOp, lower_warn, synthesize_expr_compute
  
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  ed27055
- Phase 2: eliminate redundant optionality from parser and driver
  
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  bcea2b4
- Phase 2c/2d: remove .ok() error swallowing and add warnings to catchall defaults
  
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  35697d8
- Phase 3a: deterministic fan-in edge ordering
  
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  55a1bca
Commits on Mar 9, 2026
- Phase 3c: validate conditional merge at scalar fan-in ports
  
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  43cc20e
- Add concrete Filesystem transport binding (Phase 3d / T7)
  
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  da61e22
- Phase 3e: extract credential provider pattern (T8)
  
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  d2585e7
- Phase 4b: tiered test execution — Real-mode env var tests and design doc (T11)
  
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  d1d87e8
- Phase 4a (T14): migrate hardcoded path literals to WorkspaceLayout / named constants
  
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  b7ab432
- Phase 4 complete: fix import resolution test, all workspace tests pass
  
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  ecafc2c
- Mark PLAN.md as implemented
  
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  dcbdfc8
- Remove POSTMORTEM.md, DESIGN_INTERP_FALLBACK.md, PLAN.md
  
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  ea799e2
- Fix 5 failing scope tests: update fixture for hoisted service call pattern
  
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  68f5dd1
- Merge branch 'main' into cursor/interpreter-fallback-dag-reliance-3cd3
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  e78b2ec
- Fix all test failures: simplify DSL files that relied on lossy parsing
  
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  54d0920
- Fix all clippy lints: unwrap_or_default, dead field, let-else to ?, if-let, is_some_and
  
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  de1eb15
- Fix review feedback: 5 issues addressed
  
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  0cd2f8e
- Clean up stale references to deleted POSTMORTEM.md and DESIGN_INTERP_FALLBACK.md
  
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  7d9eb34
- Fix CI: exclude crates that depend on generated files
  
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  2545bad

Commits

Commits on Mar 8, 2026

Commits on Mar 9, 2026