Claude/ephapax linear types e00 zs#7
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Ephapax is a linear type system for safe memory management targeting WebAssembly. This commit includes: Core Implementation: - ephapax-syntax: AST definitions with linear type annotations - ephapax-typing: Linear type checker with region support - ephapax-wasm: WASM code generator with bump allocation - ephapax-runtime: no_std WASM runtime with region management Formal Semantics (Coq): - Syntax.v: Core type and expression definitions - Typing.v: Linear typing rules with context tracking - Semantics.v: Operational semantics and safety theorems Documentation: - Language specification (spec/SPEC.md) - Comprehensive wiki documentation - ROADMAP.md with detailed development plan - CONTRIBUTING.adoc guide Infrastructure: - Cargo workspace with 4 crates - CI/CD workflow for Rust and Coq - EUPL-1.2 license Key features: - Linear types prevent use-after-free and memory leaks - Region-based memory management for bulk deallocation - Second-class borrows for temporary access - Formal proofs in Coq for type safety
Implements Phase 2 (Language Frontend) of the Ephapax roadmap:
- ephapax-lexer: High-performance lexer using logos
- Tokenizes all Ephapax syntax (keywords, operators, literals)
- Support for nested block comments {- -}
- String escape sequence handling
- Comprehensive error recovery
- 20+ unit tests
- ephapax-parser: Parser combinator implementation using chumsky
- Complete expression parsing (let, fn, if, region, case, etc.)
- Type parsing (base types, String@region, functions, products, sums)
- Declaration parsing (fn, type)
- Rich error reporting with ariadne
- 19 unit tests + doc tests
All tests pass successfully.
- Complete ephapax-typing with full expression type checking (pair, sum types, case, let, string operations) - Add ephapax-interp tree-walking interpreter for debugging - Create ephapax-repl with interactive REPL and commands (:help, :type, :load, :tokens, :reset, :verbose) - Build ephapax-cli with subcommands (run, check, compile, repl) - Add ephapax-stdlib with prelude, I/O, string, math modules - Add compile_module function to ephapax-wasm
Set up directory structure for Ephapax libraries: - library/common/ for shared language implementations - library/specific/ for Ephapax-specific code
Common Library (from aggregate-library): - arithmetic: add, subtract, multiply, divide, modulo - comparison: less_than, greater_than, equal, not_equal, etc. - logical: and, or, not - string: concat, length, substring - collection: map, filter, fold, contains - conditional: if_then_else Ephapax-Specific Library: - linear: move, drop, copy (linear type operations) - region: new_region, alloc_in (region-based memory) - memory: borrow (reference operations) - wasm: compile_to_wasm (WebAssembly compilation)
Renamed library/ to aggregate-library/ with clearer structure: Common Library (22 ops from hyperpolymath/aggregate-library): - arithmetic: add, subtract, multiply, divide, modulo - comparison: equal, not_equal, less_than, greater_than, less_equal, greater_equal - logical: and, or, not - string: concat, length, substring - collection: map, filter, fold, contains - conditional: if_then_else Ephapax-Specific Library (17 ops): - linear: move, drop, copy, borrow - region: new_region, alloc_in - io: print, println, read_line - conversion: i32_to_string, string_to_i32 - product: pair, fst, snd - sum: inl, inr, case Total: 39 fully-specified operations
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